Thèses sur le sujet « T. viride »
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Jaafoura, Salma. « Mémoire lymphocytaire T et persistance virale ». Thesis, Paris 11, 2014. http://www.theses.fr/2014PA114847.
Texte intégralDuring the primary immune response, CD8 memory emerges from an environment of strong immune activation. The FoxP3 regulatory CD4 T-cell subset (Treg) is known as a key suppressive component of the immune system. We report that Tregs are required for the generation of functional CD8 memory. In the absence of Tregs during priming, the resulting memory cells proliferate poorly and fail to differentiate into functional cytotoxic secondary effectors following antigen reactivation. We find that the Tregs act early, during the expansion phase of primary CD8 effectors, by fine tuning interleukin-2 exposure of CD8 memory precursors. This crucial new role of Tregs has implications for optimal vaccine development. In patients who are receiving prolonged antiretroviral treatment (ART), HIV can persist within a small pool of long-lived resting memory CD4 T cells infected with integrated latent virus. This latent reservoir involves distinct memory subsets. We provide results that suggest a progressive reduction of the size of the blood latent reservoir around a core of less-differentiated memory subsets (central memory and stem cell-like memory).This process appears to be driven by the differences in initial sizes and decay rates between latently infected memory subsets. Our results also suggest an extreme stability of the TSCM sub-reservoir, the size of which is directly related to cumulative plasma virus exposure before the onset of ART, stressing the importance of early initiation of effective ART. The presence of these intrinsic dynamics within the latent reservoir may have implications for the design of optimal HIV therapeutic purging strategies
Brizzi, Fanny. « Étude de l'effet de l'expression de la protéine virale Nef du virus de l'immunodéficience humaine sur la lymphopoïèse T ». Phd thesis, Université Paris-Est, 2009. http://tel.archives-ouvertes.fr/tel-00476995.
Texte intégralPiché, Alain. « Résolution d'une molécule d'ADN hybride virale-cellulaire dans des cellules de mammifères : rôle de la protéine virale grand T ». Thèse, Université de Sherbrooke, 1987. http://hdl.handle.net/11143/11748.
Texte intégralBidot, Caroline. « Modélisation mathématique de la réponse lymphocytaire T spécifique à une infection virale ». Phd thesis, Ecole Nationale Supérieure des Mines de Saint-Etienne, 2006. http://tel.archives-ouvertes.fr/tel-00085132.
Texte intégralHamel, Yamina. « Etude de la réponse lymphocytaire T anti-virale dans la perspective de transfert adoptif post-greffe ». Paris 7, 2002. http://www.theses.fr/2002PA077243.
Texte intégralIntensive treatment prior to the injection of hematopoietic stem cells (HSC) have a dual effect on the immune system: one hand, they damage the majority of peripheral T cells and with them most of the immunological memory of the patient and, secondly they are capable of altering anatomical areas involved in their differentiation. For allogeneic transplantation, these effects are exacerbated by immunosuppressive therapy given for prevention of graft versus host disease (GVHD), as well as by the latter if it occurs. Deprived of immunological memory, private as part of this capacity to rapidly regenerate a new T tell repertoire during the shorter or longer period of recovery, the patient will be exposed to risks of infection. Several ways of research are currently being developed to try to prevent and treat post-transplantation complications. We considered the opportunities for immune-intervention by adoptive transfer of T cells after transplantation, i. E. The means to accelerate the constitution in the recipient of a T tell repertoire to limit the infections episodes. These tell therapies can be considered as injections of either total T lymphocytes of the donor either T cells selected for their specificities. The first solution exhibiting at high risk of GVHD, we are mainly interested in the second, i. E. The immediate contribution of T cells with selected specificities for virures following the hematopoietic stem cells transplantation partially matched T depleted. We studied the role of specific T cells in the fight against infectious complications after transplantation
Sturm, Nathalie. « Etude phénotypique et fonctionnelle des lymphocytes intra-hépatiques dans l'hépatite chronique virale C et le carcinome hépatocellulaire ». Phd thesis, Université de Grenoble, 2011. http://tel.archives-ouvertes.fr/tel-00649495.
Texte intégralAlanio, Bréchot Cécile. « Impact d'une infection virale chronique sur le répertoire T CD8 préimmun : à quel moment perd-on sa naiveté ? » Thesis, Paris 6, 2015. http://www.theses.fr/2015PA066376/document.
Texte intégralThe CD8 preimmune repertoire is defined as the set of circulating antigen-specific T CD8 lymphocytes that have not been activated yet by their cognate antigen. Because those cells are very rare, they have not been evaluated in humans. We developed a tetramer-based enrichment protocol that allowed for the first time direct detection and enumeration of those rare naive antigen-specific CD8 T cells in healthys. We then used this tool to characterize the CD8 preimmune repertoire in patients with chronic hepatitis C viral infection. We found that their naive CD8 T cells are dysregulated, being hypersensitive to TCR signals, and with increased proportions of memory-phenotype (MP) cells in inexperienced populations. These perturbations are reversible after viral clearance, highlighting the added benefit of early antiviral treatment. Finally, using a transgenic model (OTI), we observed high proportions of MP inexperienced T cells in the blood of cxcr3-deficient unimmunized mice. This suggests that CXCR3-dependent lymphocyte trafficking could account for some preimmune repertoire alterations. Altogether, our work demonstrates that inexperienced T cells can lose their naiveté in several pathological situations. The impact of these findings will need to be considered when designing future immunotherapeutic strategies - especially when « inflammatory » patients are being targeted. Additionally, we highlight the challenge of interpreting T-cell immunophenotyping studies without getting knowledge into antigen-specific populations
Lemieux, Bruno. « Mutants de l'antigène grand T du virus du polyome affectés dans la réplication virale ». Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1998. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp03/MQ35693.pdf.
Texte intégralLeroy, Vincent. « Evaluation des populations lymphocytaires T intra-hépatiques au cours de l'hépatite virale chronique C ». Université Joseph Fourier (Grenoble), 2002. http://www.theses.fr/2002GRE10180.
Texte intégralLemieux, Bruno. « Mutants de l'antigène grand T du virus du polyome affectés dans la réplication virale ». Sherbrooke : Université de Sherbrooke, 1998.
Trouver le texte intégralBasbous, Jihane. « Rôle des protéines Tax et HBZ de HTLV-1 dans la régulation de la transcription virale et cellulaire ». Montpellier 2, 2004. http://www.theses.fr/2004MON20043.
Texte intégralTongiani, Stefania. « Etude de la population lymphocytaire de patients atteints d'hépatite virale C chronique ». Université Joseph Fourier (Grenoble), 2007. http://www.theses.fr/2007GRE10049.
Texte intégralOur study was the evaluation of the lymphocytes T will intra hepatic (UH) specific or no of the virus ofhepatitis C (YHC) obtained starting from the hepatic biopsies of the patients infected bychronic hepatitis C (HCC). Considering the number of the UH extracted from an insufficient biopsyto allow a functional analysis, we set up an experimental protocol which does not imply any specific antigenic stimulation. The diversity ofT cell receptor(TCR) was studied by molecular analysis of area COR3 with the technique of analysis by RT-PCR and immunotluorescence for the receptor Y beta. Ooes not exist a preferential expansion of a population Yb respect with un' other among the 24 families Yb studitrl. The study shows that the answer will intra hepatic during the infection is poly clonally. The use of the technique of the tetramers classifies 1 tluorescent CMH class 1 charged with peptides YHC (core 35, NS3, NS5), us made it possible to evaluate in cytometry of tlow the frequency of a population of specific L T COS Chronic stimulation can coat the expression on cells L T C08+ of the inhibiting receivers NKRs (natural killer) likely is functions effector that inhibiting the expression of KIRs misses on the virgin cells, but is expressed on the cells memory controlling theeffectors functions negatively, while the hétero dimer inhibiting C094/NKG2A is expressedon the cells effector/memory and depends on the TCR distribution L T C08 expressing NKG2A (receptor ofmolecules HLA-E) and molecules of the group KIR (CD I58a and b) which bind molecules HLA-C. We observed a positive correlation between the frequency intra- hepatic of cells TC08+ expressing NKG2A and the degree of severity of the lesions
Petitjean, Gaël. « La persistance virale et le réservoir des lymphocytes T CD4+ chez les patients infectés par le virus de l'immunodeficience humain de type 1 ». Montpellier 2, 2007. http://www.theses.fr/2007MON20100.
Texte intégralKoch, Barbara [Verfasser], et André [Akademischer Betreuer] Gessner. « Entwicklung einer T-Zelldiagnostik für virale Erkrankungen im ELISpot-Format / Barbara Koch ; Betreuer : André Gessner ». Regensburg : Universitätsbibliothek Regensburg, 2019. http://d-nb.info/1186967404/34.
Texte intégralVigan, Finlin Ines Nadège. « Caractéristiques phénotypiques et fonctionnelles des lymphocytes T intra-hépatiques et périphériques au cours de l'hépatite virale chronique C ». Université Joseph Fourier (Grenoble), 2001. http://www.theses.fr/2001GRE10117.
Texte intégralSTERKERS, MORINEAUX GHISLAINE. « Clones t humains specifiques du virus de l'influenza : restriction - specificite anti-virale - fonction et mecanisme de proliferation ». Paris 7, 1986. http://www.theses.fr/1986PA077207.
Texte intégralSterkers, Ghislaine. « Clones T humains spécifiques du virus de l'influenza restriction, spécificité anti-virale, fonction et mécanisme de prolifération / ». Grenoble 2 : ANRT, 1986. http://catalogue.bnf.fr/ark:/12148/cb376013740.
Texte intégralFrenati, Melania. « Role of CYBR, a cytohesin binder and regulator scaffold protein, in cell-mediated immune response in vivo ». Doctoral thesis, Università degli studi di Padova, 2013. http://hdl.handle.net/11577/3423114.
Texte intégralCybr (cytohesin binder and regulator) è una proteina adattatrice coinvolta nell’assemblaggio e nel reclutamento di complessi proteici associati con il trafficking intracellulare e la trasduzione del segnale. Grazie alla sua esclusiva espressione in cellule di origine ematopoietica, Cybr ha attirato l’attenzione come potenziale proteina chiave nei meccanismi molecolari che controllano le cellule del sistema immunitario. Cybr interagisce con i membri della famiglia delle citoesine attivanti gli ADP ribosylation factors (ARF), specialmente con citoesina-1, e regola l’adesione citoesina-1 mediata di LFA 1 a ICAM-1. La sua espressione è rapidamente regolata da molte citochine e da altri effettori solubili del sistema immunitario. Alcuni ruoli funzionali proposti per questa molecola sono la partecipazione nella formazione delle vescicole, nel trafficking endocitico, nella regolazione del signaling del TCR e nell’interazione tra cellule dendritiche e cellule T durante la presentazione dell’antigene. Al fine di caratterizzare il ruolo fisiologico di questa molecola in vivo, è stato creato un ceppo di topi deficienti per Cybr. Questi topi, nonostante un normale sviluppo del sistema immunitario, mostrano una ridotta o ritardata capacità di rispondere a diversi stimoli e in condizioni di stress. Questo progetto di ricerca si è prefisso di investigare la funzione biologica di Cybr nella risposta immunitaria cellulo-mediata nei confronti di tumori indotti dal complesso retrovirale costituito dai virus sarcomatogeno e leucemogeno murini di Moloney (M-MSV/MuLV, in seguito indicato come M-MSV). L’inoculo intramuscolare di M-MSV in topi C57BL/6 (B6) immunocompetenti causa lo sviluppo di sarcomi che regrediscono spontaneamente grazie ad una forte risposta immunitaria mediata principalmente da linfociti T citotossici (CTL) specifici per gli antigeni virali. Al contrario, topi Cybr-deficienti inoculati con M-MSV sviluppano tumori di dimensioni maggiori e che regrediscono più lentamente rispetto ai controlli. Per comprendere i motivi di questo diverso andamento, dopo l’inoculo del complesso retrovirale in topi Cybr-deficienti e wild type, sono stati caratterizzati a livello fenotipico e funzionale i linfociti presenti nei tumori, nei linfonodi drenanti e nelle milze al momento della massima crescita tumorale (giorni 11-15). Abbiamo riscontrato un ridotto numero di linfociti T CD4+ e CD8+ e di CTL antigene specifici nella popolazione infiltrante il tumore nei topi Cybr-deficienti. Tuttavia questa differenza si è ridotta alla fine del periodo analizzato. Inoltre, un ritardo simile è stato riportato nello sviluppo dell’attività litica nei CTL provenienti da topi Cybr-KO rispetto a topi wild type. Al contrario, linfociti T memoria wild type e Cybr-KO non hanno mostrato nessuna differenza in termini di attività litica. Complessivamente, questi dati indicano che la deficienza di Cybr ha un significativo impatto nell’attivazione delle cellule T naive e nella loro espansione dopo il priming, ma non definiscono se questa proteina influenzi maggiormente la fase di priming e/o adesione cellulare o il trafficking e la migrazione delle cellule del sistema immunitario. Per chiarire questi aspetti, sono stati trasferiti linfociti T naive provenienti da topi Cybr-KO/GFP o B6/GFP in topi RAG2-/-γc-/- inoculati con il complesso retrovirale. Questi topi mancano di cellule T, B e NK e non regrediscono spontaneamente i tumori M-MSV indotti. Nonostante l’infusione di cellule T, i tumori hanno continuato a crescere, indicando che le cellule T naive non sono state in grado di montare una risposta immune pienamente efficace in questo modello, un aspetto probabilmente dovuto ad un reclutamento e priming sub ottimali nei linfonodi, che sono risultati ipoplastici. Al fine di rispondere a questi quesiti biologici, topi B6 nu/nu atimici ricostituiti con tessuto midollare depleto di linfociti T provenienti da topi wild type o Cybr-KO e successivamente infusi con linfociti T naive o memoria provenienti da topi Cybr-KO/GFP o B6/GFP, dovrebbero costituire un modello sperimentale ottimale per investigare il ruolo di Cybr sia nel comparto T che nel comparto APC. Nell’insieme, i risultati ottenuti indicano che la deficienza di Cybr ha un significativo impatto nella risposta immune antigene-specifica, ma studi addizionali devono essere condotti al fine di definire con maggior precisione il ruolo di Cybr nella fase di priming e nel ritardo dello sviluppo dell’attività litica
Nzounza, Patrycja. « Rôle de Dlg 1 dans le cycle de réplication et la transmission du VIH-1 ». Paris 7, 2011. http://www.theses.fr/2011PA077154.
Texte intégralThe spread of HIV-1 in an infected organism largely depends on proper virus assembly and budding for the efficient formation of infectious particles. To achieve this goal, the virus hijacks numerous cellular proteins that are generally partners of the virus structural proteins. HIV-1 can disseminate both by diffusion of cell-free particles and by direct transmission in cell contacts named virological synapses (VS}. The VS has been described as the most efficient and predominant means of HIV-1 spread in vitro. We have previously identified Dlgl -human homologue of Drosophila Discs Large protein- as a new partner of HIV-1 Gag. Here we studied the role of Dlgl in the two modes of transmission in natural host cells of HIV-1: primary CD4+ T cells and Dlgl-expressing or Dlgl-depleted Jurkat T cell lines. We provide evidence that HIV-1 multiplication was increased in Dlgl-depleted T cells. This increase did not result from higher virus yield, since a major increase in particle production upon Dlgl depletion was not observed. Higher multiplication resulted mainly from improved cell-free virus transmission: a fourfold enhancement of infectivity was observed in particles produced by Dlgl-depleted T cells. Moreover, this infectivity enhancement seemed to correlate with an increase of the virions cholesterol content. Conversely, quantitative cell-to-cell transfer analyses showed that Dlgl did not affect cell-to-cell virus transmission; its depletion did not modify "passive" transfer of HIV-1 material from cell-to-cell, or HIV-' transmission leading to productive infection via cell contacts. Immmunolabelling and confocal microscopy showed that Dlgl did not impair HIV-1-induced virological synapse formation. Collectively, these results demonstrate that Dlgl negatively regulates HIV-1 cell-free virus transmission whereas cell-to-cell spread of the virus circumvents this regulation
Fruquiere, Antoine. « Canaux calciques de type T spinaux et sensibilité douloureuse ». Thesis, Montpellier, 2018. http://www.theses.fr/2018MONTT061.
Texte intégralPhysiological pain is essential for individual survival, but chronic pains are purely deleterious for the organism and the life quality. Unfortunately, current therapies are limited to drugs with a low efficacy or with a bad benefit/risk ratio. It is thus urgently necessary to better understand the establishment and persistence mechanisms of those chronic pains, like neuropathic pain in order to design efficient therapeutic strategies against this pathology. Many studies have shown that T-type calcium channels are involved in chronic pain states, like Cav3.2 subtypes, all along the nociceptive circuit. In the peripheral nervous system, Cav3.2 channels have pronociceptive impact and are now approved as a target for innovative therapies development. In contrast, the role of Cav3.2 channel in the central nervous system, and especially in the spinal cord, a crucial hotspot of nociceptive information convergence, integration and transmission, remains to be explored.Thanks to a Cav3.2-GFP-Lox murine model created by the team, we were able to i/ identify and precisely localize Cav3.2 positive neurons in all the nervous system and ii/ induce tissue specific deletion of Cav3.2 by the Cre recombinase action, to evaluate effects on pain sensitivity. At the spinal level, we found that Cav3.2 is prominently expressed in lamina II neurons comprising mostly excitatory neurons. Knocking-out spinal Cav3.2 by a viral approach has demonstrated behaviorally i) an abolition of cold and mechanical allodynia, mechanical hyperalgesia and spontaneous pain like behaviors under neuropathic conditions in males and females, ii) an alteration of the hot perception, under pathological pain conditions, with a differential effect in a sex dependent manner, and iii) a modification of anxiety associated to chronic pain, iv) a suppression of the analgesia induced by a systemic treatment with a brain penetrant T-type channel blocker. Mechanistically, extracellular in vivo recordings of spinal projection neurons demonstrate a decrease in integration and transmission of pathologic nociceptive messages from peripheral C- and A-delta fibers by Cav3.2 ablation in spinal networks. This approach has been developed before and after induction of the pain model to evaluate the preventive and curative effect of the treatment.Altogether, the results demonstrate that spinal Cav3.2 channel deletion has preventive and curative effects regarding neuropathic pains symptoms. In a clinical perspective for the development of analgesics based on T-type calcium channel blockers, we suggest the utility of targeting spinal Cav3.2 additionally to channels in primary afferent neurons, a notion already well established
El, Dassouki Zeina. « Ciblage thérapeutique de l'oncoprotéine virale Tax dans les Leucémies/Lymphomes T de l'adulte (ATL) associées au retrovirus HTLV-I ». Paris 7, 2014. http://www.theses.fr/2014PA077093.
Texte intégralThe HTLV-1 TAX Transactivator initiates transformation in adult T-cell leukemia/Lymphoma (ATL), a highly aggressive chemotherapy-resistant malignancy. The arsenic/Interferon combination, which triggers degradation of the tax oncoprotein, selectively precipates apoptosis of ATL cell lines and cures TAX-driven murine ATL. Yet, the role of tax loss in ATL response is disputed and the molecular mechanisms driving degradation remain elusive. Here we demonstrate that ATL-derived cells are addicted to continuous tax expression, implying that tax degradation underlies clinical responses to the arsenic/interferon combination in mice and patients. The latter enforces PML nuclear body (NB) formation and partner protein recruitment. In arsenic/interferon-treated ATL cells, TAX is recruited onto NBS, undergoes PML-dependent hyper-sumoylation by SUMO2/3,but not SUMO1, ubiquitination by RNF4 and proteasome-dependent degradation. Thus arsenic/Interferon is a targeted therapy of ATL, enforcing NB formation by arsenic/Interferon therapy could have broad therapeutic value to destroy pathogenic sumoylated proteins
Wang, Yingying. « Sélection immunomagnétique des lymphocytes T antiviraux IFN-γ+ : analyse quantitative, fonctionnelle et composition en sous-populations lymphocytaires T ». Thesis, Université de Lorraine, 2014. http://www.theses.fr/2014LORR0139/document.
Texte intégralAllogeneic hematopoietic stem cell transplantation (HSCT) is the standard treatment for malignant or non-malignant hematological disorders or primary immunodeficiencies. However, microbiological infections especially viral infections are the major cause for morbidity and mortality for the patients after HSCT except the GvHD and disease relapse. It comes often in the period of absence of cellular immunity when the antiviral treatment is not always efficiency with an important toxicity. So the alternative treatment is adoptive cellular immunotherapy by infusion of virus specific T cells (VSTs) which has been shown efficacy in virus infections control after HSCT. In UTCT, they have produced the VSTs-ADV with a good procedure conforming to the European laws for clinical use and a clinic trial is in processing. So my work was to produce the VSTs-EBV with the same model aiming to promote a clinic trial in future. Furthermore, there are several subsets of T lymphocytes. Each subset has their own unique feature which decides their efficacy in viral infection control. Especially the discovery of stem cell like memory T cells (TSCM) with an important self-renewed ability which is critical in successful immunotherapy in viral infection or tumor control inspire us to study the distribution of subsets for VSTs. Finally, it’s advantageous to produce the VSTs targeted two or more virus in the same time with one production which is more economical. So we are interested in producing the VSTs bi-specific to ADV and EBV. Here, we present firstly our results of six production of VSTs-EBV with a synthesized antigen which is compatible with clinic use and is defined in advance. Also the specificity, efficiency in eliminating the virus and the non toxicity with a weak alloreactivity are confirmed in vitro after a short-term cell culture with IL-2. Then we showed the results obtained with the T cell subset study in producing the VSTs-ADV for clinical trial and VSTs-CMV for validation of clinical grade medium TEXMACS for cell culture in producing the VSTs. We describe the distribution of T cell subsets in healthy donors (Before selection), also after selection and after expansion in vitro with IL-2. Finally, we present the preliminary results of producing the VSTs bi-specific with three donors, in total 3 VSTs-ADV, 3 VSTs-EBV and 3VSTs-ADV/EBV are generated. The comparison between the bi-specific VSTs and mono-specific VSTs in aspect of specificity, efficiency to eliminate the viral infection and toxicity of presenting the alloreactivity in vitro showed advantage to produce the bi-specific VSTs with one selection in keeping the same specific, efficiency and weak toxicity as mono-specific VSTs
Ibisch, Catherine. « Etude de la reponse lymphocytaire t anti-virale et anti-leucemique dans la perspective de transfert adoptif post-greffe (doctorat : immunologie) ». Nantes, 2000. http://www.theses.fr/2000NANT11VS.
Texte intégralPham, Bach-Nga. « Distribution des populations lymphocytaires t intra-hepatiques dans les hepatites chroniques liees au virus b ou au virus c ; correlation de l'infiltrat t cd4+ avec la replication virale et biais d'expression des genes v beta des recepteurs t ». Paris 11, 1997. http://www.theses.fr/1997PA11T027.
Texte intégralLucifora, Julie. « Etude de la réplication du VHB et de la réponse à l'intracellulaire à l'infection virale ». Phd thesis, Université Claude Bernard - Lyon I, 2008. http://tel.archives-ouvertes.fr/tel-00342583.
Texte intégralBattisti, Pier-Luigi. « Régulation de l'expression du VIH-1 par la protéine virale Tat et par ses médiateurs cellulaires ». Paris 7, 2001. http://www.theses.fr/2001PA077166.
Texte intégralGarnier, Florence. « Contribution à l'étude de la réponse du système immunitaire au virus de la rougeole ». Lyon 1, 1993. http://www.theses.fr/1993LYO1T212.
Texte intégralKfoury, Youmna. « Mécanismes moléculaires de l'activation de la voie NF-KB par l'oncoprotéine virale d'HTLV-1 : Tax ». Paris 7, 2010. http://www.theses.fr/2010PA077022.
Texte intégralThe human T-lymphotropic virus type-1 (HTLV-I) is associated with several human pathologies such as adult T-cell leukemia/lymphoma and tropical spastic paraparesis/HTLV-I associated myelopathy. NF-Kβ activation by the viral oncoprotein Tax plays a crucial role in the induction and maintenance of cellular proliferation and inhibition of apoptosis. Tax post-translational modification by ubiquitylation and SUMOylation is involved in NF-KB activation but the molecular mechanisms underlying this activation remain unclear. We showed that ubiquitylated Tax does not interact with active IKK in the cytoplasm but binds the three IKK subunits and targets them to the centrosome. Actually, Tax is differentially ubiquitylated: K-48 ubiquitylated Tax is destined for proteasomal degradation and is stabilized upon treatment with the proteasome inhibitor PS-341. On the other hand, K-63 ubiquitylated Tax colocalizes with IKK-y in the centrosome where IKK-α and IKK-β are also recruited. Hence, the centrosome represents the platform for Tax/IKK interaction. We also showed that the same Tax molecules shuttle between Ubc9 nuclear bodies and the centrosome. Indeed, Tax ubiquitylation targets Tax and NEMO into Ubc9- and SUMO- rich nuclear bodies. Moreover, Tax induces NEMO SUMOylation and accumulation in the nuclear fraction. In conclusion, Tax ubiquitylation and SUMOylation control the bidirectional and dynamic trafficking of Tax and NEMO between the Ubc9 nuclear bodies and the centrosome
Delecluse, Henri-Jacques. « L'intégration dans le génome cellulaire comme mode de persistance lors de la latence virale : l'exemple des herpèsvirus d'Epstein-Barr et de Marek ». Lyon 1, 1995. http://www.theses.fr/1995LYO1T130.
Texte intégralTolksdorf, Felix [Verfasser]. « Cytohesin-3 und sein Interaktionspartner Arl4d regulieren die T-Zellvermittelte Immunität gegen virale Infektionen durch Beeinflussung der IL-2 Produktion / Felix Tolksdorf ». Bonn : Universitäts- und Landesbibliothek Bonn, 2018. http://d-nb.info/1202848397/34.
Texte intégralAhlqvist, Jenny. « Differences in tropism and viral assembly pathways of human herpesvirus 6A and 6B (HHV-6A and 6B) and association of host cell proteins in HHV-6A virions / ». Stockholm, 2007. http://diss.kib.ki.se/2007/978-91-7357-214-9/.
Texte intégralTumiotto, Camille. « Définition in silico d'épitopes induisant une réponse T cytotoxique en fonction de la variabilité virale du VIH-1 et de l'immunogénétique des patients ». Thesis, Bordeaux, 2018. http://www.theses.fr/2018BORD0153/document.
Texte intégralHIV (Human Immunodeficiency Virus) cure is the major challenge of the future but latent reservoir and inefficient immune response do not allow virus elimination. The immune response against HIV infection depends on host cells ability to correctly present viral epitopes to induce specific cytotoxic CD8+ T lymphocytes (CTL) response. This presentation of viral epitopes which could be improved by vaccination depends on the HLA (Human Leukocyte Antigen) system of the patient which is extremely variable. Accurately pre-stimulated, CTL would target and destroy efficiently virus-producing cells. Previous vaccine trials stimulating CTL response haven’t shown efficient virological response, presumably because epitopes used are generic without taking into account HIV-1 or patient’ immunogenetic variability.The aim of this work is to identify epitopes archived in the proviral DNA, considered to induce CTL response according to the HIV-1 and immunogenetic variability of the patients at therapeutic success. The goal is to use these peptides for a therapeutic vaccine and educate the immune system to control the viral replication without any antiretroviral treatment.One hundred and forty patients infected with HIV-1, followed at the University Hospital of Bordeaux, at therapeutic success for more than 6 months have been included in the Provir/Latitude 45 project between 2012 and 2017. A mapping of the distribution of viral subtypes of HIV-1 in Aquitaine was first performed. Analysis of more than 3200 HIV-1 genotypes conducted from 2012 to 2016 determined that the major viral subtype infecting patients living with HIV in the region is subtype B, followed by CRF02_AG which is predominant among the non-B viral subtypes. Focusing on the patients included in this project led us to find similar distributions. Following this initial analysis, a new recombinant virus composed of CRF06_cpx and subtype B could be identified. It is now referenced as CRF98_cpx. One of the patients included in the project is infected with this virus. In order to identify candidate epitopes that can serve as a therapeutic vaccine for the entire population or for a population group based on their immunogenetic characteristics, we combined the viral sequence data with the HLA typing of patients to predict the affinity in silico between an HLA and a peptide via IEDB algorithms. To automate data analysis, a software package, TutuGenetics, has been developed. This software exploits IEDB algorithms and makes it possible to study the variability of the presentation of epitopes by the different HLAs of the patient thanks to an MHC IC50 score determined for each HLA-viral sequence pair. This software has been validated by comparing the analysis of data from Next Generation Sequencing (NGS) with Sanger sequencing. Finally, for 140 patients included in the Provir project, TutuGenetics sliced the viral sequences in steps of 8 to 10 amino acids and MHC IC50 values were defined for all HLA-epitope combinations. A finer analysis allowed us to determine a list of 15 epitopes with high in silico affinity for major HLAs. These epitopes were selected by applying different filters and only HLA-peptide couples with more than 10 patients sequenced per position and by HLA were kept in this "Optimal_Provir" list.These in silico data will in a next phase be confirmed in vitro via functional immunology tests, then in vivo in macaques
Allart, Sophie. « Le cytomégalovirus humain au sein du système nerveux : interférences avec la réponse lymphocytaire T CD8+ anti-virale et l'apoptose dépendante de p53 et p73 ». Toulouse 3, 2003. http://www.theses.fr/2003TOU30017.
Texte intégralHCMV infection can severely affect immunodeficient people. It is also among the most harmful infection faced by patients with acquired immunodeficiency syndrome (AIDS), who can suffered from HCMV infection as a direct cause of retinitis or blindness. In this study, we report that HCMV-infected RPE cells were not lysed by HLA-A2 restricted cytotoxic CD8+T cell lines directed against the incoming viral protein pp65, contrary to U373MG astrocytoma cells albeit they expressed the tegument protein. We showed that the threshold amount of incoming pp65 in RPE cells was not responsible for resistance to CTL recognition. We produce evidence that upon HCMV infection, incoming pp65 was not available for recognition by T cells. Finally,.
Hollmann, Claudia Beate [Verfasser], Niklas [Gutachter] Beyersdorf, Jürgen [Gutachter] Schneider-Schaulies et Alexandra [Gutachter] Schubert-Unkmeir. « Einfluss der sauren Sphingomyelinase auf anti-virale T-Zellantworten im Masernvirus-Infektionsmodell / Claudia Beate Hollmann ; Gutachter : Niklas Beyersdorf, Jürgen Schneider-Schaulies, Alexandra Schubert-Unkmeir ». Würzburg : Universität Würzburg, 2017. http://d-nb.info/1141054469/34.
Texte intégralNicot, Christophe. « Clonage d'un provirus infectieux du HTLV-1 : étude de la replication virale in vitro dans des types cellulaires de différentes origines ». Bordeaux 2, 1995. http://www.theses.fr/1995BOR28342.
Texte intégralAntoine, Pierre. « Etude de la réponse des lymphocytes T CD4+ au cours de l'infection primaire par le cytomégalovirus ». Doctoral thesis, Universite Libre de Bruxelles, 2014. http://hdl.handle.net/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/209148.
Texte intégralAprès l’infection primaire, le virus persiste tout au long de la vie à l’état latent mais peut se réactiver de manière intermittente. Ceci est associé à l’expansion de lymphocytes T CD4+ fortement différenciés ayant des fonctions auxiliaires et cytolytiques. L’infection primaire est, par contre, caractérisée par une réplication virale intense qui dure plusieurs mois. Il a été montré que l’exposition prolongée à des concentrations élevées d’antigènes entraine une perte progressive de fonction par les lymphocytes T appelée épuisement et caractérisée par l’expression de récepteurs inhibiteurs. L’impact de la réplication virale intense observée au cours de l’infection primaire par le CMV sur la fonction des lymphocytes T CD4+ n’est pas bien connu.
La fonctionnalité des lymphocytes T CD4+ a été explorée chez l’humain et le singe rhésus au cours de l’infection primaire et comparée à celle de sujets porteurs chroniques du virus.
Les résultats montrent que l’infection primaire par le CMV est associée à la détection de lymphocytes T CD4+ circulants ayant une faible capacité de prolifération et de production de cytokines et d’IL-2 en particulier.
L’impact de la différenciation sur la fonction des lymphocytes a été exploré en détail chez l’humain. Il a été observé qu’un degré de différenciation plus élevé des lymphocytes T CD4+ spécifiques du CMV joue un rôle dans la production réduite d’IL-2. Toutefois, la fraction moins différenciée (exprimant la molécule CD28) présente également une sécrétion d’IL-2 moindre au cours de l’infection primaire. Ceci fait partie d’une diminution globale de la production de cytokines au cours de l’infection primaire qui affecte également la sécrétion d’IFNγ et TNFα, entraine une polyfonctionnalité réduite et est indépendante de la différenciation. L’épuisement des lymphocytes T CD4+ spécifiques du CMV contribue à leur fonctionnalité moindre comme l’indique l’expression accrue du récepteur inhibiteur PD-1 et l’augmentation des réponses prolifératives en présence d’anticorps bloquant PD-1.
Le lien entre excrétion virale et fonction lymphocytaire a été étudié chez le macaque rhésus. L’infection par le CMV est observée chez les singes juvéniles et adultes mais pas chez les nourrissons. L’excrétion urinaire et salivaire est significativement plus fréquente et intense chez les singes juvéniles par rapport aux adultes. Comme chez l’humain au cours de l’infection primaire, les lymphocytes T CD4+ spécifiques du virus sont moins
polyfonctionnels et prolifèrent moins efficacement chez les singes juvéniles par rapport aux singes adultes. Ceci est associé à l’expression accrue du récepteur inhibiteur PD-1 chez les singes juvéniles. La réponse proliférative des lymphocytes T CD4+ est accrue en présence d’anticorps bloquant PD-1 ou d’IL-2 exogène. Enfin, une association inverse entre fonction lymphocytaire et excrétion urinaire a été mise en évidence chez les macaques adultes.
Ces résultats indiquent que l’infection par le CMV présente des caractéristiques semblables chez l’humain et le singe rhésus. L’infection primaire est associée à la détection de lymphocytes T CD4+ ayant une fonctionnalité moindre qu’au cours de l’infection chronique. L’expression du récepteur inhibiteur PD-1 typique des cellules épuisées est l’un des mécanismes impliqués et pourrait être la cible de stratégies immunomodulatrices visant à améliorer les fonctions lymphocytaires et le contrôle de la réplication virale. Les résultats présentés indiquent que l’infection naturelle chez le singe rhésus constitue un modèle potentiellement utile à l’étude de la réponse immune au CMV humain et à l’évaluation de stratégies immunomodulatrices.
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Cytomegalovirus infection is mostly asymptomatic in immunocompetent hosts but leads to severe morbidity and mortality in immunocompromised subjects and foetuses.
After primary infection, CMV establishes lifelong persistence but can reactivate intermittently. This is associated with the expansion of highly differentiated CD4+ T lymphocytes exhibiting helper functions and cytolytic activity.
Primary infection is characterised by an intense viral replication lasting several months. It has been shown that prolonged exposure to elevated antigen concentrations induces a progressive loss of function by T lymphocytes called exhaustion. This state of functional impairment is associated to the expression of inhibitory receptors. The consequence of the intense viral replication seen in primary CMV infection on CD4+ T cell function is unknown.
CD4+ T cell function has been studied in human and rhesus macaque during primary CMV infection. Chronic CMV carriers have been used as controls.
The results show that primary CMV infection is associated to the detection of circulating CD4+ T lymphocytes exhibiting weak proliferative capacities and reduced cytokine production affecting IL-2 in particular.
The impact of differentiation on lymphocyte function has been explored in detail in human. An increased proportion of terminally differentiated CD4+ T cells (CD28-) is observed during primary infection. These lymphocytes are unable to secrete IL-2 in response to CMV antigens. Interestingly, CD28+ CMV-specific CD4+ T cells also exhibit reduced IL-2 production during primary infection. This is part of a global reduction of cytokine production affecting IFNγ and TNFα as well. The impaired cytokine production is associated to reduced polyfunctionality and is independent of differentiation. Exhaustion of CMV-specific CD4+ T lymphocytes contributes to the reduced functionality as shown by an increased expression of the inhibitory receptor PD-1 and improved proliferative responses in the presence of PD-1 blocking antibodies.
The relationship between viral replication and lymphocyte function has been explored in rhesus macaques. CMV infection is observed in juvenile and adult monkeys but not in newborns. Excretion in urine and saliva is significantly more frequent and intense in juvenile monkeys than adults. As in primary infection in human, CMV-specific CD4+ T lymphocytes are less polyfunctional and have lower proliferative capacities in juveniles as compared to adults. This is associated with an increased expression of PD-1 in juvenile monkeys. CD4+ T cell proliferative responses are increased when PD-1 blocking antibodies or exogenous IL-2 are added to the culture medium. Finally, an inverse association between lymphocyte function and urinary excretion has been observed in adult macaques.
These results indicate that CMV infection shares common features in human and rhesus macaque. Primary infection is associated to the detection of CD4+ T lymphocyte displaying lower functional capacities as compared to chronic infection. Exhaustion contributes to the functional impairment and the inhibitory receptor PD-1 could be targeted by immunomodulatory strategies aiming at improving lymphocyte functions and controlling viral replication. Natural CMV infection in rhesus macaque might be useful as a model to evaluate the efficacy and safety of immunomodulatory approaches.
Doctorat en Sciences médicales
info:eu-repo/semantics/nonPublished
Girard, Mélissa. « La réponse immune au saccharopolyspora rectivirgula : entre l'induction de l'alvéolite allergique extrinsèque et la protection contre l'infection virale ». Thesis, Université Laval, 2010. http://www.theses.ulaval.ca/2010/27345/27345.pdf.
Texte intégralDutrieux, Jacques. « Modification de l'homéostasie lymphocytaire T lors de l'infection aiguë par SIVmac251 chez le macaque rhésus : implication des interférons de type 1 ». Paris 7, 2012. http://www.theses.fr/2012PA077188.
Texte intégralMajor modifications of T-cell homoeostasis and type I interferon (IFN) response occurring during the acute phase of human immunodeficiency virus (HIV) infection are key elements of the evolution of physiopathology. Indeed, these phenomena are poorly understood due to the difficulty to study this phase in humans. This thesis work contributes to a better definition of these modifications in simian immunodeficiency virus (SIV) infected rhesus macaques, an animal model of infection presenting a similar physiopathology as HIV infection in humans. First, in Humans, I showed that recent thymic emigrants significantly participate to HIV reservoir. In our animal model, early infection of thymocytes is observed. This infection induces, by 3 days post-infection, an acceleration of thymopoiesis that leads to a massive cell release in blood. Furthermore, this phenomenon is dependent on diversification of local IFN-α secrétion. The study of antiviral and anti-proliferative effects of the different simian IFN-α subtypes demonstrates that these cytokines have 4 different profiles of antiviral activity against SIVmac₂₅₁. Within the 12 simian IFN-a subtypes, 3 strongly inhibit viral replication in the cultures, 7 allow late viral escape after an initial inhibition of viral replication and the last 2 show no activity. Finally, I demonstrated that the observed diversification of IFN-α subtypes secretion is also found in lymph nodes and in various parts of the intestine by day 3 post-infection. This IFN-α secretion coincides with chemokines production in these organs probably leading to a modification of cellular migration within these organs. Thus, naive and central memory T-cells are recruited into lymph nodes while effector memory and effector T-cells are preferentially recruited in the gut
Manske, Katrin [Verfasser], Percy A. [Akademischer Betreuer] Knolle, Percy A. [Gutachter] Knolle et Dietmar [Gutachter] Zehn. « Dynamik der Antigen-spezifischen CD8 T-Zell-Antwort gegen virale Infektion der Leber / Katrin Manske ; Gutachter : Percy A. Knolle, Dietmar Zehn ; Betreuer : Percy A. Knolle ». München : Universitätsbibliothek der TU München, 2020. http://d-nb.info/1222672804/34.
Texte intégralWang, Ying. « Structural and Functional Analyses of a Potato Spindle Tuber Viroid RNA Motif and Cognate Cellular Factors & ; High-resolution Phylogenetic Mapping Reveals the Evolutionary Dynamics of a Non-conserved MicroRNA-based Gene Regulation of a Calcium ATPase T ». The Ohio State University, 2010. http://rave.ohiolink.edu/etdc/view?acc_num=osu1284124472.
Texte intégralLe, Borgne Sylvie. « Les effecteurs t cd8 + dans l'infection par le vih : cytotoxicite et controle non-lytique de la replication virale. caracterisation de la reponse t cd8 + chez des macaques rhesus au cours d'une vaccination genetique contre le vih, suivie d'une epreuve infectieuse ». Paris 7, 1999. http://www.theses.fr/1999PA077135.
Texte intégralAfonso, Philippe. « Paraparésie Spastique Tropicale/Myélopathie Associée à HTLV-1 : mécanismes de rupture de la barrière hémato-encéphalique et interventions thérapeutiques ». Paris 7, 2008. http://www.theses.fr/2008PA077059.
Texte intégralHam/tsp (htlv-1 associated myelopathy / tropical spastic paraparesis) is a neurodegenerative disease associated with htlv-1 infection. During ham/tsp, massive lymphocytic infiltration in the central nervous system (cns) has been reported, accompanied by plasma protein leakage. The blood-brain barrier (bbb) restricts exchanges between the cns and the blood. The bbb is composed by three cell types : astrocytes, pericytes and endothelial cells. These latter are sealed with tight junctions and form a continuous endothelium. Bbb integrity is compromised during ham/tsp. No treatment is available to prevent the progression of the disease. A recent study performed on htlv-1 ham/tsp patients demonstrated that valproate (an inhibitor of histone deacetylases) treatment causes a remarkable reduction of the htlv-1 proviral load. However, a transient and significant increase of the proviral load, combined with adverse clinical effects, was also observed in the patients after few days of treatment. We first studied the cellular and molecular mechanisms of bbb disruption by htlv-1 in an in vitro model. We demonstrated the importance of the cytokines secreted by infected lymphocytes and the consequences of the infection of the endothelial cells on bbb integrity. We also tested, in a simian model, the combinatory effect of valproate and azt on the proviral load of stlv-1 infected animals, the simian counter part of htlv-1
Giraudon, Pascale. « Histoire singulière d'une infection virale : le virus de la rougeole est modifié par son hôte lors d'infections aiguës ou persistantes : comment le système immunitaire va-t-il réagir ? » Lyon 1, 1988. http://www.theses.fr/1988LYO10019.
Texte intégralGiraudon, Pascale. « Histoire singulière d'une infection virale le virus de la rougeole est modifié par son hôte lors d'infections aiguës ou persistantes : comment le système immunitaire va-t-il réagir ? / ». Grenoble 2 : ANRT, 1988. http://catalogue.bnf.fr/ark:/12148/cb37613936s.
Texte intégralGhez, David. « La neuropiline-1 est une molécule d'entrée du rétrovirus HTLV-1 ». Paris 7, 2008. http://www.theses.fr/2008PA077038.
Texte intégralSince the isolation of HTLV-1 in 1979, the identity of its cellular receptor(s) has remained an enigma. Several candidate receptors have been proposed over the years but none ever demonstrated all the properties expected for an HTLV-1 entry molecule. Very recently, the glucose transporter Glutl was found to display characteristics compatible with those of a HTLV-1 receptor. In addition, heparan sulfate proteoglycans were shown to play an important role during HTLV-1 entry. Because it also displayed properties compatible with an HTLV receptor and explained limited viral tropism better than ubiquitous Glutl, we studied the role of Neuropilin-1 (NP1) during viral entry. We found that NP1 could specifically bind the SU subunit of the viral envelope Env. The NP1/SU interactions appear functionally relevant as they play an important role during Env-mediated cell-to-cell fusion and viral entry. In the light of recent data on Glutl, we also studied possible interactions between NP1, Glutl and Env. We found that the SU can form a trimolecular complex with Glutl and NP1 and the 3 molecules colocalise at the junction between an infected and a target cell. Collectively, these results confirm that NP1 also plays a crucial role during HTLV-1 entry. We discuss the significance of these findings and try to reconcile the available data to draw a hypothetical model of the HTLV-1 receptor
Camous, Xavier. « Paramètres immunologiques dans les hépatites virales chroniques : évaluation des réponses lymphocitaires spécifiques CD4+ et CD8+ au cours de l'hépatite virale chronique C ». Phd thesis, Université Joseph Fourier (Grenoble ; 1971-2015), 2009. http://www.theses.fr/2009GRE10278.
Texte intégralAbout 200 million people are infected by hepatitis C virus worldwide. As the outcome of the disease may be hepatocellular carcinoma, it is the main cause of liver transplantations in the world. When you are infected by HCV, you are in the acute phase of the disease. It's generally asymptomatic and approximately 30% of infected patients resolve the infection spontaneously. Others will become HCV chronic carriers and may develop fibrosis which may evolute in cirrhosis. At this stage, there is an additional 3% per year risk to develop hepatocellular carcinoma. There is still no preventive vaccine. The standard therapy is a combination of pegylated IFN and ribavirin and is only effective in 50% cases of genotype 1 infected patients. Nowadays, we still don't know clearly how this therapy works during chronic phase. The objectives of this work were to study a various panel of cell populations, in peripheral blood and in the liver, during chronic hepatitis C to evaluate treatment impacts on these. We finely characterized the populations of NK cells, which are known to potentially play an important role during the disease and to undergo heavy viral pressures. We also studied predictive immunological parameters able to indicate to clinicians which patients develop a sustained virologic response and what cell populations product IFN before treatment. We have studied a variety of immunological parameters before, during, under and 6 months after a hepatitis C therapy to try to conclude on immunological impact of combination IFN and ribavirin. Finally, we decided to characterize and localize intrahepatic and peripheral TReg during hepatitis C. To achieve our goals, we used a wide range of technologies. We studied cellular phenotype by 4-colors flow cytometry, measured gene of interest expression by RT-PCR, quantified IFN secretion against HCV proteins by elispot and dosed cytokines secreted against HCV peptides by CBA. We worked in collaboration with the "département d'hépatogastroentérologie du CHU de Grenoble " which supplied blood samples and liver biopsies we needed. We first studied peripheral and intrahepatic NK cells population as well as correlations between their phenotype, frequencies and clinical parameters in chronic hepatitis C patients. We used healthy and hepatitis B controls. We found an increase of the of the cytotoxic/secretive NK cells ratio during hepatitis C. Two particular populations of NK cells were identified. One correlated to viral control, CD3-CD56dimNKG2A+, and the other with hepatic lesions, CD3-CD56brightNKG23A+. Our study on pretreatment predictive immunological parameters found that basal expression of IFN is positively correlated to a sustained virologic response. Moreover, this expression is significatively higher in chronical HCV carriers compared to healthy controls. Then, we investigated the type of cells producing IFN and we found that it was TNK cells. Following this, we monitored T cells response during therapy. We evaluated the activation of CD4+ and CD8+ T cells through CD25 (IL-2R) expression, their IFN secretion against HCV peptides with elispot, ISG expression using RT-PCR and the evolutions of their phenotype, including NK's and TNK's, by flow cytometry. Biological sample were obtained from a clinical trial funded by ANRS in collaboration with the hepato-gastroenterology department at the Grenoble hospital, Gammatri project. This consisted of adding IFN to the classical therapy to improve its response rate. We have had regular blood samples before, during and 6 months after the end of therapy. Our results showed that therapy didn't improve the response of HCV specific T cells neither increased it. In contrast, it rather suppressed T cells response, maybe to let T cells- independent mechanisms work. We also developed an in vitro culture system with HCV proteins which let us measure the direct impact of molecules on the subpopulations of HCV specific T cells. We used it with PBMC from non-treated patients cultured with physiological doses of IFNand ribavirin. The only population responding positively to treatment by secreting IFN was TNK and only during the very first hours in culture. Finally, we studied the regulatory T cell (TReg) to determine their location and roles during the disease. We didn't find any correlation between TReg frequencies and viral load, so it seems that TReg didn't inhibit HCV specific T cells. They are colocalized in CD8 infiltrates and may participate in hepatic preservation by inhibiting cytotoxic cells by direct contact. This protective effect only lasts until fibrosis reach the A2/F3 grade. Beyond, TReg lose their effect and this fact may be a cause of the onset of cirrhosis. To conclude, the influence of virus on the immunity of its host is extremely complex and involves a larger number of factors. In our study, we showed that cells with the better potential in virus control were CD3-CD56dimNKG2A+ NK cells, negatively correlated with viral load, and TNK, responding positively to therapy. It is necessary to study in details for the developments of the immunotherapy in the future. Moreover, it will be interesting to maintain TReg activity beyond A2/F3 grade to prevent the formation of cirrhotic lesions. The measure of IFN expression before the treatment may be a good predicator of sustained viral response and provide better care for patients
Marduel-Beurton, Patricia. « Mort par apoptose de précurseurs du système nerveux central induite par des lymphocytes T activés par une infection virale : implication dans la physiopathologie de la sclérose en plaques et la myélopathie associée au virus HTLV-I ». Lyon 1, 2001. http://www.theses.fr/2001LYO10258.
Texte intégralMOUHOUB, AMAL. « Expression et fonction des recepteurs du complement cr1/cd35 et cr2/cd21 au cours de la maturation des lymphocytes t chez l'homme. Role de cr1 et cr2 dans l'induction de la replication virale dans les thymocytes et les lymphocytes t infectes par le vih ». Paris 11, 1996. http://www.theses.fr/1996PA112334.
Texte intégralSoula-Rothhut, Mahdhia. « Etude de la phosphorylation de la P56Ick et détection des sites de phosphorylation par les voies de signalisation CD4 et TcR/CD3 dans les cellules T ». Paris 7, 1993. http://www.theses.fr/1993PA077343.
Texte intégralRitter, Thomas. « Anti-inflammatorische und zytoprotektive Gentherapie am Beispiel der experimentellen Transplantation ». Doctoral thesis, Humboldt-Universität zu Berlin, Medizinische Fakultät - Universitätsklinikum Charité, 2003. http://dx.doi.org/10.18452/13842.
Texte intégralThe aim of the research was to investigate, whether the specific use of gene therapeutic methods can play a role in the prevention of allogeneic graft rejection or in the prevention of the induction of ischemia/reperfusion damage in various rat transplantation models. Doing this there were to main focusses: First we concentrated on the ex-vivo gene transfer of therapeutic molecules directly into the graft, which was done using recombinant adenoviruses. Then we investigated the potential of retrovirally modified, allospecific T-cells as carriers for therapeutic genes for the prevention of graft rejection. This publication consists of thirteen original papers in international journals, six reviews and four manuscripts that have been submitted for publication.