Literatura académica sobre el tema "Inhibiteurs de point de contrôle immunitaires"
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Artículos de revistas sobre el tema "Inhibiteurs de point de contrôle immunitaires"
Bonnefoy, Nathalie, Daniel Olive y Bernard Vanhove. "Les futures générations d’anticorps modulateurs des points de contrôle de la réponse immunitaire". médecine/sciences 35, n.º 12 (diciembre de 2019): 966–74. http://dx.doi.org/10.1051/medsci/2019193.
Texto completoDubois, Manon, Camille Ardin, Fanny André, Arnaud Scherpereel y Laurent Mortier. "L’immunothérapie, une révolution en oncologie". médecine/sciences 35, n.º 12 (diciembre de 2019): 946–48. http://dx.doi.org/10.1051/medsci/2019226.
Texto completoRouvet, Guillaume y Olivier Lambotte. "Toxicité des immunothérapies anti-cancéreuses". médecine/sciences 39, n.º 5 (mayo de 2023): 445–51. http://dx.doi.org/10.1051/medsci/2023066.
Texto completoChiossone, Laura y Eric Vivier. "Nouvelles frontières de la lutte contre le cancer". Biologie Aujourd'hui 212, n.º 3-4 (2018): 61–67. http://dx.doi.org/10.1051/jbio/2019011.
Texto completoDelaunay, M., P. Caron, V. Sibaud, C. Godillot, S. Collot, J. Milia, G. Prévot y J. Mazières. "Toxicité des inhibiteurs de points de contrôle immunitaires". Revue des Maladies Respiratoires 35, n.º 10 (diciembre de 2018): 1028–38. http://dx.doi.org/10.1016/j.rmr.2017.08.006.
Texto completoBatton, Romain, Paul Matte, Michael Aoun, Auréline Lefèvre y Pierre-Emmanuel Joubert. "Inhibiteurs de point de contrôle immunitaire". médecine/sciences 40, n.º 6-7 (junio de 2024): 581–83. http://dx.doi.org/10.1051/medsci/2024076.
Texto completoBouchereau, Sarah, Joe-Elie Salem, Anissa Roger, Pauline Bonnet, Christine Longvert, Astrid Blom, Amélie Gantzer et al. "Myocardites sous inhibiteurs de points de contrôle immunitaires (ICI)". Annales de Dermatologie et de Vénéréologie - FMC 1, n.º 8 (diciembre de 2021): A195—A196. http://dx.doi.org/10.1016/j.fander.2021.09.118.
Texto completoLazarou, Ilias y Eugenio Fernandez. "Complications rhumatologiques des inhibiteurs de points de contrôle immunitaires". Revue Médicale Suisse 16, n.º 685 (2020): 504–7. http://dx.doi.org/10.53738/revmed.2020.16.685.0504.
Texto completoDieu-Nosjean, Marie-Caroline y Christophe Caux. "La biologie des cibles PD-1 et CTLA-4 et la question des biomarqueurs". médecine/sciences 35, n.º 12 (diciembre de 2019): 957–65. http://dx.doi.org/10.1051/medsci/2019192.
Texto completoBelkoniene, Mhedi, Georges Halabi, Samuel Rotman y Sébastien Kissling. "Inhibiteurs de points de contrôle immunitaires et atteinte rénale : mise au point sur une pathologie émergente". Revue Médicale Suisse 16, n.º 683 (2020): 399–403. http://dx.doi.org/10.53738/revmed.2020.16.683.0399.
Texto completoTesis sobre el tema "Inhibiteurs de point de contrôle immunitaires"
Ramel, Eloïse. "Effet des inhibiteurs de la pompe à proton gastrique sur la réponse anti tumorale aux inhibiteurs de point de contrôle immunitaire". Electronic Thesis or Diss., Bordeaux, 2024. http://www.theses.fr/2024BORD0227.
Texto completoImmune checkpoint inhibitors (ICIs) have revolutionized the management of many advanced cancers, but their success depends on genetic, biological, and environmental factors. Multiple retrospective studies have shown negative associations between the use of proton pump inhibitors (PPIs) and clinical response to ICIs. PPIs are also known to modify the composition of the gut microbiome, a key factor in modulating the immune response to ICIs. We hypothesized that PPI-induced dysbiosis could be responsible for the negative association to clinical outcomes in cancer patients. We used murine models of subcutaneous cancer grafts to study the antitumor immune response during ICI treatment, either concomitantly or not with PPI treatment (omeprazole). Our initial results showed changes in the gut microbiome in mice treated with omeprazole, but without any impact on the efficacy of ICIs. Since the PPI-associated intestinal dysbiosis in humans is likely due to the translocation of oral bacteria into the intestine, we transplanted a human oral microbiome into mice to mimic this effect. The presence of this oral microbiome, combined with PPI treatment, appeared to impair tumor progression control in mice but needs further experiments. In parallel, we demonstrated in vitro that omeprazole exerts a direct effect on the effector functions of T and NK cells, particularly on the expression of membranebound FasL. Additionally, omeprazole administration in mice was associated with decreased FasL expression on the surface of T/NK cells isolated from tumors or peripheral blood. These findings encourage further research into the role of oral bacteria in the effects of omeprazole on the antitumor immune response, while also suggesting that the direct impact of omeprazole on immune functions within tumors should be considered
Melique, Suzanne. "Analyse des capacités modulatrices de la protéine THEMIS sur la signalisation et les fonctions biologiques du checkpoint immunitaire BTLA". Electronic Thesis or Diss., Université de Toulouse (2023-....), 2024. http://www.theses.fr/2024TLSES079.
Texto completoImmune checkpoints are receptors that negatively regulate T lymphocyte responses triggered by antigen receptors (TCR) via co-stimulatory receptors. Therapies based on the use of monoclonal antibodies targeting these receptors have significantly improved the efficacy of cancer therapies. The immune checkpoint BTLA regulates T lymphocyte activation and maintenance of peripheral CD8+ T lymphocytes by inhibiting signaling emanating from the TCR through the SH2 domain-containing tyrosine phosphatase, SHP-1. BTLA is expressed on T lymphocytes during development in the thymus at the positive selection stage, but its biological functions in this context are unknown. THEMIS is a signaling protein essential for T lymphocyte development and maintenance of CD8+ T lymphocytes in peripheral tissues. Deletion of the gene encoding THEMIS is associated with a defect in positive selection of thymocytes and lymphopenia. THEMIS promotes positive selection and maintenance of CD8+ T lymphocytes by inhibiting the catalytic activity of SHP-1. We hypothesized that THEMIS may promote positive selection and maintenance of CD8+ T lymphocytes by repressing the inhibitory functions of BTLA. We have shown that deletion of the gene encoding THEMIS in mouse models increases BTLA's ability to inhibit activation and differentiation of CD4+ and CD8+ lymphocytes. THEMIS is recruited to BTLA and represses SHP-1 phosphatase activity by increasing oxidation of its catalytic cysteine. Deficiency in THEMIS, however, has no effect on the inhibitory functions of the immune checkpoint PD-1, which primarily depends on the tyrosine phosphatase SHP-2. We show that deletion of the gene encoding BTLA restores positive selection in THEMIS-deficient mice, indicating that THEMIS promotes positive selection by blocking BTLA's inhibitory signaling. THEMIS also promotes maintenance of peripheral CD8+ T lymphocytes by reducing BTLA's ability to inhibit survival signals triggered by IL-2 and IL-15 receptors. These results suggest that inhibitory signals triggered by immune checkpoints depend on interactions with their ligands but are also constrained by intracellular proteins that modulate the threshold at which these receptors are able to inhibit T lymphocytes. These findings have implications for understanding the therapeutic mechanisms involved in cancer treatment and the mechanisms underlying the emergence of autoimmune diseases
Soussan, Sarah. "B lymphocytes and autoantibodies in immune-related adverse events following immune checkpoint inhibitors in cancer patients". Electronic Thesis or Diss., Sorbonne université, 2024. https://accesdistant.sorbonne-universite.fr/login?url=https://theses-intra.sorbonne-universite.fr/2024SORUS022.pdf.
Texto completoImmune checkpoints inhibitors (ICI) have revolutionized the treatment of previously incurable malignancies. Unfortunately, the use of ICI also induces a bystander breakdown of peripheral tolerance leading to immune related Adverse Events (irAEs) in 30-90% of treated patients, drastically reducing quality of life and requiring therapy dose reduction or discontinuation. As ICI directly target T cells, they have been considered the main culprit for irAEs. Nevertheless, T cells cannot fully explain adverse events, and the role of B cells and their associated mechanisms have not been characterized. We therefore studied the involvement of peripheral B-cell compartment in irAEs, using both phenotypic and functional approaches, in two cohorts of solid cancer patients treated with anti-PD-1 and/or anti-CTLA-4 monoclonal antibodies. Deep phenotyping of B-cell subsets throughout the treatment and at the onset of irAEs has been performed by multi-parametric spectral flow cytometry. Subsequently, to analyze the functions of B-cell subsets, notably their ability to produce antibodies, we set-up a B-cell culture system allowing in vitro differentiation of B cells into antibody-secreting cells. This gave us the opportunity to analyze the antibody production by circulating B cells and their association with irAEs occurence. The screening of circulating B cells phenotype and function was conducted alongside the evaluation of the serum and plasma reactivity of cancer patients by complementary approaches (ELISA, Western Blot, Immunofluorescence assays). We found that, before treatment, patients that develop ICI-induced irAEs exhibit a significantly lower expression on B cell subsets of the FcγRIIB, CD85j and LAIR-1 inhibitory receptors in melanoma patients and higher expression of the CD95 and CXCR5, respectively activating and lymphoid organs re-circulatory markers in lung cancer patients. In addition, increased in baseline abundance of hyper-activated IgD- memory B cell subset or plasmablasts precursor were observed in patients that will undergo irAEs. Moreover, a part of irAEs patients exhibit baseline or ICI-induce circulating autoantibodies which could be directed against the related tissue of irAEs occurrence. Indeed, patients experiencing cardiac/muscular irAEs demonstrated autoantibodies directed against cardiac tissues and well-defined cardiac/muscle antigens. Finally, IgG derived from cardiac/muscular irAEs patients bound to human cardiomyocytes and perturbed the calcium kinetic and the contractibility of cardiac spheroids. These findings highlight a predisposition of irAEs incidence in patients with baseline highly activated and differentiated circulating B cells associated with autoantibody production. Overall, these results support the potential role of the humoral adaptative immunity in the mechanisms of ICI-induced irAEs
Karaboué, Abdoulaye. "Rôle du système circadien dans le contrôle de la survie des patients traités par immunothérapie pour cancer : Analyse des mécanismes impliqués". Electronic Thesis or Diss., université Paris-Saclay, 2024. http://www.theses.fr/2024UPASQ019.
Texto completoA better understanding of physiopathological mechanisms and better-targeted treatments, according to the characteristics of the patient and his/her tumor, are the focus of intensive research, within the framework of precision and personalized cancer medicine. Precision medicine is now beginning to integrate molecular circadian clocks, which generate periodic oscillations of around 24 h in metabolism, cell proliferation and death, as well as responses to toxic or therapeutic drugs. Several experimental, clinical and epidemiological studies have demonstrated the important role of the circadian timing system in all stages of carcinogenesis, from initiation and promotion to progression and metastatic dissemination. The circadian timing system also influences tolerance and efficacy of anti-cancer treatments, both in experimental models and in patients. After my initial observation of an apparent great homogeneity in the temporal responses to cancer immunotherapy in my clinical practice, I have been investigating the role of dosing time and circadian rhythms in the efficacy of immune checkpoint inhibitors. Indeed, immunotherapy has emerged as a standard anticancer treatment for several cancer types in the last decade. However, not all patients benefit from it, and only a small number are cured. My current thesis project results first highlighted the role of the time of administration of immune checkpoint inhibitors on their efficacy and tolerability in patients with non-small cell lung cancer, with a four-fold increase in survival of patients treated in the morning compared with the afternoon or evening. I then showed, in a first meta-analysis and then in a review, that morning administration of immunotherapy doubled on average the survival and progression-free survival of patients with eight different types of cancer. I then propose the main circadian mechanisms that can influence the efficacy of immunotherapy over the course of 24 hours. Finally, my work shows that morning administration of an immune checkpoint inhibitor also doubles its efficacy compared with afternoon administration, despite its combination with immunosuppressive chemotherapy. Moreover, the administration times of the first four immunochemotherapy cycles recapitulate the chrono-immunotherapeutic effect of the treatment over its full duration the vast entire. In conclusion, the discovery of a major impact of the time of administration of cancer immunotherapy on its efficacy is in favor of between-patient synchronization of the circadian mechanisms of its pharmacodynamics vis-à-vis immune system cells. The characterization of between-patient differences in circadian synchronization could further enable personalized optimization of cancer chronoimmunotherapy
Chavanton, Aude. "Optimisation de traitements immunothérapeutiques dans le cancer". Electronic Thesis or Diss., Bourgogne Franche-Comté, 2024. http://www.theses.fr/2024UBFCI005.
Texto completoCancer is a disease caused by the proliferation of transformed cells that cannot be controlled by the body, ultimately leading to death. Today, it is the leading cause of death in France, making it a major focus of research interest. Despite the wide range of cancer treatments currently available in clinical practice (chemotherapy, radiotherapy, hormone therapy, etc.), many patients do not respond to these therapies, and the death rate is still very high. Some fifteen years ago, immunotherapy took its first clinical steps and demonstrated promising effects, becoming a promising new therapeutic weapon against cancer. Immunotherapy is a therapeutic approach designed to stimulate the immune system to better destroy cancer cells. Anti-PD-1/PD-L1 immunotherapy has shown promising effects in various types of cancer. However, despite their efficacy in some patients, many do not respond to these therapies in multiple cancer types, including colorectal cancer. In this context, the research team in which I carried out my PhD demonstrated that the heat shock protein HSP110 promotes colorectal cancer cell proliferation and is associated with poor prognosis in colorectal cancer. This led to the development of an HSP110 inhibitor molecule called i007. The aim of this thesis work is to evaluate the efficacy of anti-PD-L1/i007 dual therapy in colorectal cancer, and to identify whether HSP110 inhibition can improve the efficacy of anti-PD-L1. We were able to identify an antitumor effect of this dual therapy, probably mediated by depleted CD8+ cells and the secretion of granzyme A, B, interferon γ and perforin. Macrophages, NK cells and mast cells also appear to be involved in the immune response induced by double therapy, but their exact role remains to be defined. Finally, an opening to a possible new project seeking to potentiate the effect of anti-PD-L1 was highlighted, by combining anti-PD-L1 with anti-LAG-3
Grasselly, Chloé. "Établissement et caractérisation de modèles précliniques de résistance aux inhibiteurs de points de contrôles immunitaires". Thesis, Lyon, 2018. http://www.theses.fr/2018LYSE1256/document.
Texto completoBecause of the limited efficacy and the toxicity of conventional therapies to fight cancer, researchers focused on the new trategies. These efforts lead to the emergence of immunotherapies, whose msot recent actors are the monoclonal antibodies targeting immune checkpoint (ICP). Among those ICP inhibitors, we found antibodies targeting the surface protein « Programmed Cell Death 1 », called anti- PD1, and those targeting its ligand, « Programmed Cell Death Ligand 1 », called anti- PDL-1. Those antibodies shown a great efficacy in a wide diveristy of cancers, and are currently used for clinical practice in the case of melanoma, lung cancer, bladder cancer and renal cell carcinoma. However, those treatments don’t benefit to all tumor bearing patients, with a mean of 60% of innate resistance, and 25% of acquired resistance following a primary response, variable according to tumor type. Phenomena involved in resistance are currently poorly described. In this context, the aim of my project was to establish in vivo preclinical models of acquired resistance to anti-PD1 and anti-PDL-1. To do that, we used syngeneic renal cancer (RENCA), bladder cancer (MB49 and MBT-2), and colorectal cancer (MC38), and immunocompetent mice, that we have made resistant by serial reimplantations of tumors pieces and serial treatments, inducing a selection pressure until we obtained a resistant phenotype. The efficiency of PD1/PDL-1 axis blocking is strongly linked to the microenvironment composition, as a result we realized an immunophenotyping protocol. We observed anti-tumor cells as T cells, Natural Killer cells, and M1 macrophages, but also cells harboring immunosuppressive functions, as M2 macrophages, MDSC, and Treg. Moreover, some studies have identified an upregulation of alternatives ICP in the context of acquired resistance to anti-PD1, so we also observed the expression of LAG3, TIM3 and TIGIT besides PD1 and PDL-1 expression. We shown that resistance is strongly dependant to the tumor model, even if we identified a decrease of anti-tumor M1 macrophages is models resistant to anti-PD1, and an increase of Treg in models resistant to anti-PDL-1, suggesting a common mechanism of resistance specific to respectively anti PD1 and anti-PDL-1. Following Zaretsky and al. identification of genes involved in interferon pathway in the case of acquired resistance to anti-PD1 in melanoma, we decided to study the molecular profile of resistant tumors. We identified 5 common genes differently modulated between anti-PD1 and anti-PDL-1 resistant models, including SERPINF1 and FCNA which seems to be promising as targets to validate. Lastly, in parallel to establishment and characterization of preclinical models of acquired resistance, we tested new therapeutical approches of anti-PD1 and anti- PDL-1 potentiation in combination with reference chemotherapies. We shown a synergy in wild-type colorectal and bladder cancers (MC38 and MB49), no effect of the combination in metastatic breast cancer 4T1, and an inhibition of anti-PDL 1 effect in bladder cancer MBT-2. Immunphenotyping of tumors allowed us to observe here also high differences between tumor models, both at baseline and after treatments initiation. To conclude, even if our results need a validation with patients samples, we demonstrated that different cellular and molecular modifications could be involved in resistance to anti-PD1 and anti-PDL-1, and that resistance could be bypass with chemotherapy combination, according to tumor type
Dréan, Raphaelle. "Développement de nano-anticorps antagonistes du point de contrôle immunitaire ILT4 pour une application en immunothérapie antitumorale". Electronic Thesis or Diss., Sorbonne université, 2022. http://www.theses.fr/2022SORUS446.
Texto completoILT4 (Immunoglobulin-Like Transcript 4) is an immune checkpoint receptor mainly expressed by myeloid immune cells. In cancer context, ILT4 participates in tumor development by maintaining a protumoral immuno-microenvironment and directly promoting tumor cell proliferation. ILT4 interaction with the non-classical MCH class I molecule HLA-G induces an immunosuppressive microenvironment by promoting tolerogenic myeloid cells. Moreover, the ectopic expression of ILT4 has been reported in several solid tumors. The activation of ILT4 by Angiopoietin-like-2 (ANGPTL2) promotes non-small cell lung tumor cell proliferation and inhibits cell apoptosis. Targeting this new immune checkpoint with blocking antibodies is therefore a promising cancer immunotherapy approach. In light of several drawbacks of classical IgG blocking antibodies in solid cancer, we investigated the potential of VHH-based inhibitors. This small monoclonal antibody format, derived from camelid homodimeric antibodies, combine the binding capacities of antibodies to the properties of small molecules. After immunization of an alpaca and phage-display screening, we selected a VHH with high affinity and specificity to ILT4 that inhibits the interaction of the receptor with both ligands. We validated the VHH’s biological antagonist activity on tumor cells and monocyte-derived pro-tumoral M2 like macrophages in vitro. These results support the potential of this new VHH-based antibody targeting ILT4 in cancer immunotherapy
Cavelier, Cindy. "Etude du point de contrôle des dommages à l'ADN". Toulouse 3, 2010. http://thesesups.ups-tlse.fr/889/.
Texto completoAcute Myeloid Leukemia (AML) is a clonal hematopoietic disorder characterized by the accumulation of malignant hematopoietic progenitor cells with an impaired myeloid differentiation program. The molecular basis of AML is thought to be associated with the acquisition of at least two types of critical cooperating mutations occurring at the hematopoietic stem or committed progenitors level. Class I mutations, affecting tyrosine kinases receptors and key components of cellular signalling pathways, confer growth and proliferative advantages. They are associated with class II mutations, affecting transcription factors thus leading to impaired normal differentiation program. In this study, we were first interested in CHK1, a protein kinase involved in preserving genome integrity by playing a critical role at the intra-S and G2/M cell cycle checkpoint activated in DNA damage response. We have shown that activation of CHK1 was sustained in immature cell lines, leading to a more stringent G2/M checkpoint in response to DNA damage, thus impairing illegitimate entry into mitosis in presence of unrepaired DNA damage and participating in their resistance to genotoxic agents. In a second study, we have demonstrated an abnormal activation of the CHK1 kinase in a large panel of AML patient samples, associated with the presence of constitutive DNA damage in absence of genotoxic stress. Moreover, the level of CHK1 activation is significantly correlated with unfavourable cytogenetic samples, particularly with complex karyotype phenotype. CHK1 inhibition by the pharmacological inhibitor UCN-01 or by RNA interference was found to decrease the clonogenic capacity of the AML progenitors, and to induce a chemosensitisation to ara-C. In contrast, growth of normal hematopoietic progenitors, which do not display constitutive DNA damage, was not impaired by such treatment. Overall, all these results underline the dual role of CHK1 kinase in AML pathology in the chemoresistance of immature leukemic cells and in the establishment of the genomic instability observed in complex karyotype AML. These findings could have major pharmacologic consequences, because they open a therapeutic window for new compounds targeting the cell cycle checkpoint machinery in AML and more particularly in the worst prognostic group with complex karyotype
Liu, Peng. "Mort cellulaire immunogène induite par le crizotinib dans le cancer poumon non à petites cellules". Thesis, Université Paris-Saclay (ComUE), 2018. http://www.theses.fr/2018SACLS148.
Texto completoAccumulating evidence suggests that certain conventional chemotherapies, radiotherapies, as well as targeted therapies mediate their long-term therapeutic success by inducing immunogenic cell death (ICD), which stimulate the release or exposure of danger-associated molecular patterns from or on cancer cells, causing their recognition by the immune system, thus reinstating immunosurveillance. An unbiased screen identified crizotinib as a tyrosine kinase inhibitor that is potent in provoking hallmarks of ICD. In subsequent low-throughput validation experiments, crizotinib promoted Calreticulin exposure, ATP secretion, HMGB1 release, as well as ER stress in both human and murine cancer cells, especially if it is combined with normally non-ICD inducing chemotherapeutics such as cisplatin. ICD induced by the combination of chemotherapy and crizotinib was also observed in non-small cell lung carcinoma (NSCLC) cells lacking activating mutations of the crizotinib targets ALK and ROS1, suggesting an off-target-mediated mode of action. Comparative studies indicated that exclusively the clinically used (R) isoform of crizotinib was efficient in inducing cell death and stimulating ICD hallmarks whereas the (S) enantiomer lacked those characteristics. When combined with cisplatin, crizotinib-killed fibrosarcoma MCA205 cells as well as lung cancer TC-1 cells efficiently vaccinated syngeneic immunocompetent mice against a re-challenge with live cancer cells of the same types. Crizotinib improved the efficacy of chemotherapy with non-ICD inducers (such as cisplatin and mitomycin C) on three distinct (transplantable, carcinogen- or oncogene induced) orthotopic NSCLC models, none of which relied on the activation of ALK or ROS1. Of note these anticancer effects were completely lost if any of the ICD signals was blocked. These anticancer efficacies in different models were linked to an increased T lymphocyte infiltration as a sign of an immune response and were lost if such tumors grew on immunodeficient (nu/nu) mice that are athymic and hence lack thymus-dependent T lymphocytes, or on immunocompetent mice with a neutralization of interferon-. The combination of cisplatin and crizotinib led to an increase in the expression of CTLA-4, PD-1 and PD-L1 in tumors, coupled to a strong sensitization of NSCLC to immunotherapy with antibodies blocking CTLA-4 and PD-1. Hence, a combination of crizotinib, conventional chemotherapy and immune checkpoint blockade may be active against NSCLC, and these data might facilitate the design of clinical trials to evaluated novel combination regiments for the treatment of NSCLC
De, Vries-Brilland Manon. "Caractérisation du microenvironnement immunitaire des carcinomes papillaires du rein". Electronic Thesis or Diss., Angers, 2023. http://www.theses.fr/2023ANGE0017.
Texto completoArticle 1: Checkpoint inhibitors in metastatic papillary renal cell carcinoma : papillary Renal Cell Carcinoma (pRCC) is the most common non-clear cell RCC (nccRCC) and a distinct entity, although heterogenous, associated with poor outcomes. The treatment landscape of metastatic pRCC (mpRCC) relied so far on targeted therapies, mimicking previous developments in metastatic clear-cell renal cell carcinoma. However, antiangiogenics as well as mTOR inhibitors retain only limited activity in mpRCC. As development of immune checkpoint inhibitors (ICI) is now underway in patients with mpRCC, we aimed at discussing early activity data and potential for future therapeutic strategies in monotherapy or combination. Expression of immune checkpoints such as PD-L1 and infiltrative immune cells in pRCC could provide insights into their potential immunogenicity, although this is currently poorly described. Based on retrospective and prospective data, efficacy of ICI as single agent remains limited. Combinations with tyrosine-kinase inhibitors, notably with anti-MET inhibitors, harbor promising response rates and may enter the standard of care in untreated patients. Collaborative work is needed to refine the molecular and immune landscape of pRCC, and pursue efforts to set up predictive biomarker-driven clinical trials in these rare tumors. Article 2 : Comprehensive analyses of immune tumor microenvironment in papillary renal cell carcinoma. Background : papillary Renal CellCarcinoma (pRCC) is the most common non-clear cell RCC (nccRCC), and associated with poor outcomes in the metastatic setting. In this study, we aimed to comprehensively evaluate the immune tumor microenvironment (TME) ,largely unknown, of patients with metastatic pRCC and identify potential therapeutic targets. Methods : we performed quantitative gene expression analysis of TME using MCP-counter methodology, on 2 independent cohorts of localized pRCC (n=271 and n=98). We then characterized the TME, using immunohistochemistry (n=38) and RNA-sequencing (RNA-seq) (n=30) on metastatic pRCC from the prospective AXIPAP trial cohort. Results: unsupervised clustering identified 2 "TME subtypes", in each of the cohorts : the “immune-enriched” and the “immune-low”.Within AXIPAP trial cohort, the “immune-enriched” cluster was significantly associated with a worse prognosis according to the median overall survival to 8 months (95%CI, 6-29) versus 37 months (95%CI, 20-NA,p=0.001).The 2 immune signatures, Teff and JAVELIN Renal 101 Immuno signature, predictive of response to immune checkpoint inhibitors (CPI) in ccRCC, were significantly higher in the “immune-enriched” group (adjusted p<0.05). Finally, 5 differentially overexpressed genes were identified, corresponding mainly to B lymphocyte populations. Conclusion : for the first time, using RNA-seqand IHC, we have highlighted a specific immune TME subtype of metastatic pRCC, significantly more infiltrated with T and Bimmune population. This “immune-enriched” group appears to have a worse prognosis and could have a potential predictive value for response to immunotherapy, justifying the confirmation of these results in a cohort of metastatic pRCC treated with CPI and incombination with targeted therapies
Capítulos de libros sobre el tema "Inhibiteurs de point de contrôle immunitaires"
Faury, Stéphane y Jérôme Foucaud. "Immunothérapie spécifique, cancers et qualité de vie". En Pratiques et interventions en psychologie de la santé, 143–52. Editions des archives contemporaines, 2020. http://dx.doi.org/10.17184/eac.3192.
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