Dissertationen zum Thema „Lymphome primitif de séreuses“
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Boulanger, Emmanuelle. „Lymphomagenèse associée à l'Herpèsvirus Humain-8 : des épisomes aux épitopes“. Paris 5, 2006. http://www.theses.fr/2006PA05D032.
Der volle Inhalt der QuellePrimary effusion lymphoma (PEL) tumor cells are latently infected with human herpesvirus-8 (HHV-8) and co-infected in most cases, with Epstein-Barr virus (EBV). HHV-8 and EBV genomes persist in the nucleus as covalently closed episomes. 1. Molecular analyses of lymphoid and episome clonalities showed monoclonal IgH gene rearrangements in all PEL tumors analysed (n=15), and a monoclonal pattern of EBV episomes in all EBV-positive cases (n=10). However, five cases were found to be monoclonally infected with HHV-8 whereas ten cases contained a biclonal or oligoclonal pattern of HHV-8 episomes. 2. Two epitopes from the HHV-8 latency-associated nuclear antigen-1 (LANA-1) protein were able to blind HLA-B*0702 molecules with a strong affinity, and induced specific cytotoxic T-cell responses (CTL) into HLA-B*0702 transgenic mice. However, these peptides failed to be naturally processed from the endogenous protein, suggesting the existence of immune escape mechanisms
Salinas, Alain. „Lymphome non hodgkinien primitif de l'intestin grêle“. Montpellier 1, 1995. http://www.theses.fr/1995MON11002.
Der volle Inhalt der QuelleBel, Guérin Claudine. „Le lymphome pulmonaire primitif : à propos d'un cas“. Bordeaux 2, 1988. http://www.theses.fr/1988BOR25113.
Der volle Inhalt der QuellePoujol-Boisse, Myriam. „Lymphome primitif du foie : association au virus de l'immunodéficience humaine“. Montpellier 1, 1993. http://www.theses.fr/1993MON11098.
Der volle Inhalt der QuelleBordeau-Lamiou, Valérie. „Lymphome primitif du système nerveux central au cours du sida“. Bordeaux 2, 1995. http://www.theses.fr/1995BOR2M006.
Der volle Inhalt der QuelleDUQUESNOIS, ANNE. „Le lymphome malin primitif de la thyroïde : à propos de 26 observations“. Lille 2, 1993. http://www.theses.fr/1993LIL2M269.
Der volle Inhalt der QuelleLacombe, Thierry. „Lymphome malin non hodgkinien primitif du rein : à propos d'une observation“. Montpellier 1, 1989. http://www.theses.fr/1989MON11189.
Der volle Inhalt der QuelleRoques, Philippe. „Le lymphome rectal primitif : à propos d'un cas avec revue de la littérature“. Montpellier 1, 1990. http://www.theses.fr/1990MON11288.
Der volle Inhalt der QuelleDUFO, DUPOUTS MARIE-JOSE. „Dermatomyosite et lymphome cutane primitif a cellules t : a propos d'un cas ; revue de la litterature“. Aix-Marseille 2, 1994. http://www.theses.fr/1994AIX20869.
Der volle Inhalt der QuellePanajol, Véronique. „Localisation rare d'un lymphome malin non hodgkinien primitif du col utérin : à propos d'une observation“. Bordeaux 2, 1989. http://www.theses.fr/1989BOR25124.
Der volle Inhalt der QuelleWeber, Jean-Christophe. „Lymphome b cd5 au cours de l'evolution d'un syndrome de gougerot sjogren primitif : etude clinique et analyse moleculaire“. Université Louis Pasteur (Strasbourg) (1971-2008), 1990. http://www.theses.fr/1990STR1M188.
Der volle Inhalt der QuelleMinéo, Jean-François. „Evaluation de l'immunothérapie locale par anticorps monoclonal anti-CD20 pour le traitement du lymphome primitif cérébral et intraoculaire dans un modèle murin immunocompétent“. Lille 2, 2009. http://www.theses.fr/2009LIL2S012.
Der volle Inhalt der QuelleLoreau, Emilie. „Identification de gènes impliqués dans le développement des lymphones cutanés primitifs CD30+“. Phd thesis, Université Victor Segalen - Bordeaux II, 2003. http://tel.archives-ouvertes.fr/tel-00011307.
Der volle Inhalt der QuelleMiloudi, Hadjer. „Étude des anomalies de XPO1 dans les lymphomes B Anomalies de l’exportine 1 dans les he´mopathies malignes : des mutations au ciblage the´rapeutique Cytoplasmic cyclin D1 controls the migration and invasiveness of mantle lymphoma cells STAT6 is a cargo of exportin 1: Biological relevance in primary mediastinal B-cell lymphoma Mutant E571K and wild-type XPO1 effects are balanced in B-cell lymphoma“. Thesis, Normandie, 2020. http://www.theses.fr/2020NORMC409.
Der volle Inhalt der QuelleExportin-1 (or XPO1) plays a key role in the nuclear export of several RNAs and more than 200 proteins. The XPO1-E571K "hot-spot" mutation is present in nearly 25% of patients with primary mediastinal B-cell lymphoma (PMBL), and the classical form of Hodgkin lymphoma (cHL) but at a lower frequency (3%) in chronic lymphocytic leukemia (CLL). Mutations affecting the JAK2/STAT6 pathway are common in PMBL and cHL. We first studied the role of XPO1 in the nuclear export of STAT6 in PMBL cell lines. Using immunofluorescence and proximity ligation assay (PLA) techniques, we showed that STAT6 is a cargo of XPO1. We also showed that a selinexor treatment induced a nuclear accumulation of wild-type and mutant STAT6 whatever the XPO1 status.In order to investigate the functional impact of the XPO1-E571K mutation, we compared several physiological parameters between the three PMBL cell lines bearing or not the mutation. No differences were observed despite the expression of the XPO1E571K allele. However, in the cell line harboring the XPO1 mutation (MedB1), the wild-type (wt) allele was amplified possibly masking the effects of the mutation. In addition, in the cohort of patients we studied, the mutation was never found in the homozygous or hemizygous state indicating the importance of the gene dosage. CRISPR-Cas9 experiments allowing the introduction of the mutation in the U2940 wt cell line confirmed our hypothesis. Interestingly, the presence of the E571K mutation changed the affinity of XPO1 for selinexor. Indeed, the knockout of the mutated allele in the cHL UH-01 line decreased its sensitivity to selinexor. We concluded that the balance between the wt and the mutated alleles is a key element in defining the oncogenic properties of XPO1. In a preliminary study, we conducted a proteomic analysis to identify XPO1E571K partners in the PMBL lines. Our results showed that XPO1E571K interacts with the importin-β1 which could modify the subcellular localization of XPO1.Mantle cell lymphoma (MCL) cells are characterized by the overexpression of cyclin D1. Cyclin D1 being an XPO1 cargo protein, we looked for possible XPO1 abnormalities in several MCL cell lines. No abnormalities in the expression, localization neither function of XPO1 were observed. But, we showed that the cytoplasmic portion of cyclin D1 controlled the invasion and migration of MCL cells. It might be interesting to determine the subcellular localization of cyclin D1 at the time of diagnosis in order to offer a better treatment management for MCL patients. In addition, although selinexor is still in clinical trials, its use for the treatment of MCL could be considered in the most aggressive cases where cyclin D1 is cytoplasmic
Gapihan, Guillaume. „Etude du cluster oncogénique miR17-92 dans les lymphomes B agressifs humains“. Thesis, Sorbonne Paris Cité, 2016. http://www.theses.fr/2016USPCC321.
Der volle Inhalt der QuellePrimary mediastinal large B-cell lymphoma (PMBL) shares pathological features with diffuselarge B-cell lymphoma (DLBCL), and molecular features with classical Hodgkin lymphoma (cHL). The miR-17-92 oncogenic cluster, located at chromosome 13q31, is a region that is amplified in DLBCL. Here we compared the expression of each member of the miR-17-92 oncogenic cluster insamples from 40 PMBL patients versus 20 DLBCL and 20 cHL patients, and studied the target genes linked to deregulated miRNA in PMBL. We found a higher level of miR-92a in PMBL than in DLBCL, but not in cHL. Acombination of in silico prediction and transcriptomic analyses enabled us to identify FOXP1 as a main miR-92a target gene in PMBL, a result so far not established. This was confirmed by 3’UTR, and RNA and protein expressions in transduced cell lines. In vivo studies using the transduced cell lines in mice enabled us to demonstrate a tumor suppressor effect of miR-92aand an oncogenic effect of FOXP1. The higher expression of miR-92a and the down regulation of FOXP1 mRNA and proteinwere also found in human samples of PMBL, while miR-92a expression was low and FOXP1was high in DLBCL. We concluded to a post-transcriptional regulation by miR-92a through FOXP1 targeting in PMBL, with a clinico-pathological relevance for better characterisation of PMBL
Belhouachi, Nabila. „Sélection antigénique dans les lymphomes du système nerveux central“. Thesis, Sorbonne Paris Cité, 2018. http://www.theses.fr/2018USPCC216.
Der volle Inhalt der QuellePrimary vitroretinal lymphoma (PVRL) is a high-grade lymphoma considered as a subtype of primary central nervous system lymphoma (PCNSL). Unusual localization is a feature of these rare entities. The vast majority of cases are diffuse large B cell lymphoma (DLBCL), mostly of activated B-cell (ABC). To investigate whether PVRLs display a specific IG repertoire contributing to explain their unusual localization, we analysed in detail the IG heavy and light chain sequences from PVRL and PCNSL cases, and we compared their repertoire to that of a publicly available IG heavy chain sequences dataset from systemic ABC-type DLBCLs. Our study was carried out on the largest PVRL series reported to date and showed that PVRL displayed a strikingly biased repertoire as the IGHV4-34 gene was used in 63.6% of cases. The frequency was significantly higher in PVRL compared to PCNSL and DLBCL. This gene has been repeatedly found to be preferentially used in various B-cell malignancies, but never to such an extent. Half of PVRL cases expressing the IGHV3-7 gene had stereotyped VH CDR3 features (subset). Altogether our data showed that PVRLs display a very biased IG repertoire strongly suggesting that antigen selection plays a major role in their development. Thus, PVRL display a highly restricted IG repertoire indicative of antigen selection, and distinct from that of PCNSL. Antigen(s) identification may provide promising perspectives in physiopathology concepts and therapeutic approaches