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ANXA10 sensitizes microsatellite instability-high colorectal cancer to anti-PD-1 immunotherapy via assembly of HLA-DR dimers by regulating CD74.
Cell Biol Toxicol
January 2025
Department of Medical Oncology, the First Hospital of China Medical University, Shenyang, Liaoning, China.
Background: Microsatellite instability-high (MSI-H) metastatic colorectal cancer (CRC) patients are the dominant population in immune checkpoint blockade treatments, while more than half of them could not benefit from single-agent immunotherapy. We tried to identify the biomarker of MSI-H CRC and explore its role and mechanism in anti-PD-1 treatments. Tumor-specific MHC-II was linked to a better response to anti-PD-1 in MSI-H CRC and CD74 promoted assembly and transport of HLA-DR dimers.
View Article and Find Full Text PDFAnaplastic lymphoma kinase (ALK)-fusion proteins resulting from chromosomal rearrangements are promising targets for cancer immunotherapy. While ALK-specific CD8+ T cells and epitopes presented on MHC class I have been identified in patients with ALK-positive malignancies, little is known about ALK-specific CD4+ T cells. We screened peripheral blood of ten ALK-positive anaplastic large cell lymphoma (ALK+ALCL) patients in remission and six healthy donors for CD4+ T-cell responses to the whole ALK-fusion protein, nucleophosmin (NPM1)::ALK.
View Article and Find Full Text PDFKeratinocyte-Mediated Antigen Presentation in Psoriasis: Preliminary Insights from In Vitro Studies.
Int J Mol Sci
December 2024
Department of Medical Biology and Genetics, University of Gdansk, Wita Stwosza 59, 80-308 Gdansk, Poland.
Antigen presentation plays a critical role in the pathogenesis of immune-mediated disorders. This study aimed to investigate the effects of IFN-γ and a cytokine mix (5MIX: IL-1α, IL-17A, IL-22, OsM, and TNF-α) on the antigen-presenting capabilities of keratinocytes, with a specific focus on immune-mediated dermatological conditions such as psoriasis (Ps). To achieve this, keratinocytes were treated with IFN-γ and 5MIX, and their impact on the expression of key antigen-presentation molecules, HLA-DRα and CD74, was assessed.
View Article and Find Full Text PDFAssociations Between Clinical Manifestations of SARS-CoV-2 Infection and HLA Alleles in a Caucasian Population: A Molecular HLA Typing Study.
J Clin Med
December 2024
Department of Endocrinology and Metabolic Diseases, Polish Mother's Memorial Hospital-Research Institute, 281/289 Rzgowska St., 93-338 Lodz, Poland.
: Severe COVID-19 still constitutes an important health problem. Taking into account the crucial role of HLA in immune reactions, evaluation of the impact of HLA on COVID-19 risk and clinical course seemed necessary, as the already available data are inconsistent. The aim of the present study was to compare the HLA profiles of patients with symptomatic SARS-CoV-2 infection and a healthy control group, as well as to compare HLA allele frequencies in patients with severe and non-severe courses of COVID-19.
View Article and Find Full Text PDFHLA and Non-HLA Factors for Donor Selection in Hematopoietic Stem Cell Transplantation with Post-Transplant Cyclophosphamide GvHD Prophylaxis.
Cells
December 2024
Cleveland Clinic, Allogen, Pathology & Laboratory Medicine Institute, Cleveland, OH 44195, USA.
Human leukocyte antigen (HLA) mismatches in stem cell transplantation can be well-tolerated with the use of post-transplant cyclophosphamide (PTCy) for graft-versus-host-disease (GvHD) prophylaxis. Haploidentical (Haplo) and HLA-mismatched unrelated donors become acceptable donors. This review focuses on Haplo and unrelated donor selection in the context of PTCy-transplant for hematological malignancy, in comparison with conventional GvHD prophylaxis.
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