Broadly applicable TCR-based therapy for multiple myeloma targeting the immunoglobulin J chain

Autor: Miranda H. Meeuwsen, Anne K. Wouters, Tassilo L. A. Wachsmann, Renate S. Hagedoorn, Michel G. D. Kester, Dennis F. G. Remst, Dirk M. van der Steen, Arnoud H. de Ru, Els P. van Hees, Martijn Kremer, Marieke Griffioen, Peter A. van Veelen, J. H. Frederik Falkenburg, Mirjam H. M. Heemskerk
Jazyk: angličtina
Rok vydání: 2023
Předmět:
Zdroj: Journal of Hematology & Oncology, Vol 16, Iss 1, Pp 1-16 (2023)
Druh dokumentu: article
ISSN: 1756-8722
DOI: 10.1186/s13045-023-01408-6
Popis: Abstract Background The immunoglobulin J chain (Jchain) is highly expressed in the majority of multiple myeloma (MM), and Jchain-derived peptides presented in HLA molecules may be suitable antigens for T-cell therapy of MM. Methods Using immunopeptidomics, we identified Jchain-derived epitopes presented by MM cells, and pHLA tetramer technology was used to isolate Jchain-specific T-cell clones. Results We identified T cells specific for Jchain peptides presented in HLA-A1, -A24, -A3, and -A11 that recognized and lysed JCHAIN-positive MM cells. TCRs of the most promising T-cell clones were sequenced, cloned into retroviral vectors, and transferred to CD8 T cells. Jchain TCR T cells recognized target cells when JCHAIN and the appropriate HLA restriction alleles were expressed, while JCHAIN or HLA-negative cells, including healthy subsets, were not recognized. Patient-derived JCHAIN-positive MM samples were also lysed by Jchain TCR T cells. In a preclinical in vivo model for established MM, Jchain-A1, -A24, -A3, and -A11 TCR T cells strongly eradicated MM cells, which resulted in 100-fold lower tumor burden in Jchain TCR versus control-treated mice. Conclusions We identified TCRs targeting Jchain-derived peptides presented in four common HLA alleles. All four TCRs demonstrated potent preclinical anti-myeloma activity, encouraging further preclinical testing and ultimately clinical development.
Databáze: Directory of Open Access Journals
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