It is known that anti-HLA Class I antibodies inhibit the proliferative response of PHA-activated T-lymphocytes. We found that plastic- or sepharose-linked anti-HLA Class I monoclonal antibody 01.65 does not inhibit either [3H]Thymidine incorporation or recruitment in the cell cycle, nor does it reduce the expression of c-myc mRNA and the membrane expression of Interleukin-2 Receptor and Transferrin Receptor. Furthermore, particulate Protein Kinase C is not affected by anchored anti-HLA Class I monoclonal antibody 01.65. We suggest that anti-HLA Class I monoclonal antibody may act through crosslinking or internalization of HLA Class I antigens.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1016/0006-291x(92)92381-7 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Anti-Human Leukocyte Antigen Antibody Detection from Terasaki's Humoral Theory to Delisting Strategies in 2024.
Int J Mol Sci
January 2025
Immunology Department, University Hospital Marqués de Valdecilla, 39008 Santander, Spain.
The human leukocyte antigen (HLA) system plays a critical role in transplant immunology, influencing outcomes through various immune-mediated rejection mechanisms. Hyperacute rejection is driven by preformed donor-specific antibodies (DSAs) targeting HLAs, leading to complement activation and graft loss within hours to days. Acute rejection typically occurs within six months post-transplantation, involving cellular and humoral responses, including the formation of de novo DSAs.
View Article and Find Full Text PDFTumor-Infiltrating Immune Cells and HLA Expression as Potential Biomarkers Predicting Response to PD-1 Inhibitor Therapy in Stage IV Melanoma Patients.
Biomolecules
December 2024
National Tumor Biology Laboratory, National Institute of Oncology, H-1122 Budapest, Hungary.
PD-1 inhibitors are known to be effective in melanoma; however, a considerable proportion of patients fail to respond to therapy, necessitating the identification of predictive markers. We examined the predictive value of tumor cell HLA class I and II expression and immune cell infiltration in melanoma patients treated with PD-1 inhibitors. Pretreatment surgical samples from 40 stage IV melanoma patients were studied immunohistochemically for melanoma cell expression of HLA class I molecules (using four antibody clones with different specificities), HLA-II, and immune cell infiltration (using a panel of 10 markers).
View Article and Find Full Text PDFExistence and significance of anti-HLA-C autoantibodies to primary and persistent platelet transfusion refractoriness in patients with hematologic disorders: a retrospective study from a single centre.
Ann Med
December 2025
Department of Hematology, The First Affiliated Hospital of Zhejiang Chinese Medical University (Zhejiang Provincial Hospital of Chinese Medicine), Hangzhou, China.
Objectives: Platelet transfusion refractoriness (PTR) is a frustrating clinical problem, and primary and persistent (P/P) PTR who experienced persistent PTR since the first transfusion was failed to be well recognized. This study aims to investigate the incidence and risk factors for P/P PTR.
Methods: Patients with hematologic disorders who underwent HLA high-resolution genotyping and donor-specific HLA antibody or panel reactive antibody (PRA) testing between January 2019 and March 2023 were reviewed.
Impact of repeat human leukocyte antigen mismatches on kidney graft survival: A contemporary Collaborative Transplant Study analysis.
Am J Transplant
December 2024
Institute of Immunology, Heidelberg University Hospital, Heidelberg, Germany.
Repeat human leukocyte antigen (HLA) mismatches (RMM) have been historically associated with an increased risk of graft loss after repeat kidney transplantation, in particular HLA-DR RMM in sensitized recipients. As routine use of sensitive assays can at present prevent the transplantation of RMM in hosts with donor-specific antibodies, we hypothesized that RMM would no longer be associated with graft loss. We performed a registry analysis of the Collaborative Transplant Study database including 6711 patients who received a second kidney transplant (KT) between 2010 and 2021, with at least 1 HLA-A, HLA-B, or HLA-DR mismatch.
View Article and Find Full Text PDFPrevalence of anti-HLA antibodies among live related renal transplant recipients: A retrospective observational study from a tertiary healthcare Center in India.
Transpl Immunol
December 2024
Department of Transfusion Medicine, Histocompatibility and Molecular Biology, Jaypee Hospital, Noida, UP 201301, India.
Aim: Detection of anti-HLA antibodies is crucial for pre-transplant histocompatibility testing, donor selection, and graft survival. The aim of this study was to evaluate the spectrum of anti-HLA antibodies among live related renal transplant recipients from one of the largest transplant centers in north India.
Methods: In this study, retrospective data of transplant workup done in past four years were analyzed using GraphPad Prism 9 Version 9.
Want AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!