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Interferon gamma release assay has potential in the prediction of chronic graft-versus-host disease in recipients of myeloablative allogeneic hematopoietic stem cell transplantation with post-transplantation cyclophosphamide-based graft-versus-host disease prophylaxis.
Transpl Immunol
December 2024
Department of Immunology, Institute of Hematology and Blood Transfusion, Prague, Czech Republic. Electronic address:
Background: The rate of immune reconstitution after allogeneic hematopoietic stem cell transplantation (allo-HSCT) plays the principal role in the development of serious post-transplant complications. However, the post-transplantation course has a significant impact on shaping the immune system of the recipient, per se, thus representing risk factors for subsequent unfavorable outcomes. The predictive power of an interferon gamma (IFNγ) release assay (IGRA) on graft-versus-host disease (GVHD) or hematological relapse in recipients of allo-HSCT treated with post-transplantation cyclophosphamide and the impact of these complications on the restoration of cellular immune responsiveness was evaluated.
View Article and Find Full Text PDFCirculating immune landscape in melanoma patients undergoing anti-PD1 therapy reveals key immune features according to clinical response to treatment.
Front Immunol
December 2024
Institute for Advanced Biosciences, Team: Epigenetics, Immunity, Metabolism, Cell Signaling & Cancer, Inserm U 1209, CNRS UMR, Université Grenoble Alpes, Grenoble, France.
Introduction: Immune checkpoint blockers (ICB) bring unprecedented clinical success, yet many patients endure immune mediated adverse effects and/or fail to respond. Predictive signatures of response to ICB and mechanisms of clinical efficacy or failure remain understudied. DC subsets, in network with conventional αβ T (T), NK, γδ T and iNKT cells, harbor pivotal roles in tumor control, yet their involvement in response to ICB remained underexplored.
View Article and Find Full Text PDFAntecedent viral immunization and efficacy of immune checkpoint blockade: an extensive serum antibody profile to predict outcomes in non-small cell lung cancer.
J Immunother Cancer
November 2024
Universite Paris-Saclay, Gif-sur-Yvette, France
Introduction: Immune checkpoint blockers (ICBs) revolutionized the treatment of patients with advanced non-small cell lung cancer (NSCLC) but only a fraction of them obtain a response, and clinical benefit from these treatments is often difficult to predict. The aim of our study is to unveil the potential implications of antibody response to previous viral infections in predicting response to ICBs in patients with NSCLC.
Methods: Sera from patients treated with ICBs alone, chemotherapy (CT) or a combination of CT-ICBs were analyzed with VirScan (CDI Labs, USA), a high-throughput method that comprehensively analyzes epitope-level antiviral IgG antibodies via programmable phage display and immunoprecipitation sequencing.
RSK1 dependency in FLT3-ITD acute myeloid leukemia.
Blood Cancer J
November 2024
Division of Hematology, Department of Medicine, Washington University School of Medicine, St. Louis, MO, USA.
Internal tandem duplications (ITD) in fms-like tyrosine kinase 3 (FLT3) represent the most common genetic alteration in de novo acute myeloid leukemia (AML). Here, we identify ribosomal protein s6 kinase a1 (RSK1) as a core dependency in FLT3-ITD AML and unveil the existence of crucial bi-directional regulation. RSK1 perturbation resulted in marked apoptosis and abrogated phosphorylation of FLT3 and associated downstream signaling cascades in FLT3-ITD AML cell lines.
View Article and Find Full Text PDF[Evaluate the host cellular immune response to better prevent and diagnose viral infections].
Virologie (Montrouge)
October 2024
Univ. Grenoble-Alpes, Laboratoire de virologie, CHU Grenoble-Alpes, Grenoble, France.
In medicine, virological diagnosis is mainly based on the detection of the viral genome and antigens, or on the identification of specific antibodies produced in response to infection. These strategies are suitable for characterizing an active infection or past contact with an already known virus. The recent development of tests for evaluating the host's cellular immune response opens new perspectives for personalized patient care based on immunomonitoring.
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