ArticleFrontiers in immunology2025
Circulating memory B-cell receptor repertoire analysis identifies novel candidate antibodies against metastatic melanoma in immunotherapy-responsive patients.
Article in Frontiers in immunology, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
Background: By examining the B-cell receptor (BCR) repertoire of metastatic melanoma (MM) patients with favorable treatment outcomes, it is now possible to identify unique patterns of immune responses, with the potential of discovering novel antitumor antibodies. Methods: Here, we isolated CD27-positive circulating memory B cells from non responders, partial responders, and complete responders MM patients to first-line therapy with anti-PD-1 immune checkpoint inhibitor (ICI) nivolumab, to perform a BCR repertoire sequencing analysis. We looked for complementarity-determining region 3 (CDR3) sequences that were enriched ( Results: As a result of immunotherapy stimulation in responder patients, we observed that some CDR3 clonotypes have emerged Conclusions: Although our study is based on a limited number of individuals, our observations indicate that it may be possible to further investigate the human response to immunotherapy for the identification of rare mature B clonotypes targeting plasma membrane antigens on tumor cells. These preliminary findings could contribute to the future development of fully human-compatible immunotherapies, pending additional validation and
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