Martin W. LaFleur, Lauren E. Milling, Priyamvada Prathima, Vivian Li, Ashlyn M. Lemmen, Ivy S. L. Streeter, Paul K. S. Heisig, Nicole M. Derosia, Elizabeth Riffo, Haonan Xu, Thao H. Nguyen, Aashiya Kolengaden, Samuel C. Markson, John G. Doench, Arlene H. Sharpe
{"title":"A STUB1–CHIC2 complex inhibits CD8+ T cells to restrain tumor immunity","authors":"Martin W. LaFleur, Lauren E. Milling, Priyamvada Prathima, Vivian Li, Ashlyn M. Lemmen, Ivy S. L. Streeter, Paul K. S. Heisig, Nicole M. Derosia, Elizabeth Riffo, Haonan Xu, Thao H. Nguyen, Aashiya Kolengaden, Samuel C. Markson, John G. Doench, Arlene H. Sharpe","doi":"10.1038/s41590-025-02231-6","DOIUrl":null,"url":null,"abstract":"In vivo CRISPR screens in CD8+ T cells have previously uncovered targets for cancer immunotherapy; however, a minority of the genome has been individually annotated, suggesting that additional regulators remain to be discovered. Here we assessed 899 genes in CD8+ T cells responding to murine melanoma and identified the E3 ubiquitin ligase STUB1 as a new negative regulator of anti-tumor CD8+ T cell function. We demonstrated that Stub1 knockout CD8+ T cells effectively control tumor growth across multiple murine models. Mechanistically, STUB1 interacts with the adapter protein CHIC2 to regulate cytokine receptor expression in mouse and human CD8+ T cells. Among the regulated cytokine receptors, interleukin-27 receptor α is essential for tumor growth control mediated by Stub1/Chic2 knockout CD8+ T cells. Together, these findings establish the STUB1–CHIC2 complex as a regulator of cytokine receptor expression in CD8+ T cells and provide rationale for inhibiting this pathway to enhance CD8+ T cell-mediated anti-tumor immunity. LaFleur, Milling et al. perform an in vivo CRISPR screen of CD8+ T cells responding to tumors. They identify the E3 ubiquitin ligase STUB1 as a potent negative regulator of CD8+ T cell responses in tumors.","PeriodicalId":19032,"journal":{"name":"Nature Immunology","volume":"26 9","pages":"1476-1487"},"PeriodicalIF":27.6000,"publicationDate":"2025-08-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Nature Immunology","FirstCategoryId":"3","ListUrlMain":"https://www.nature.com/articles/s41590-025-02231-6","RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"IMMUNOLOGY","Score":null,"Total":0}
引用次数: 0
Abstract
In vivo CRISPR screens in CD8+ T cells have previously uncovered targets for cancer immunotherapy; however, a minority of the genome has been individually annotated, suggesting that additional regulators remain to be discovered. Here we assessed 899 genes in CD8+ T cells responding to murine melanoma and identified the E3 ubiquitin ligase STUB1 as a new negative regulator of anti-tumor CD8+ T cell function. We demonstrated that Stub1 knockout CD8+ T cells effectively control tumor growth across multiple murine models. Mechanistically, STUB1 interacts with the adapter protein CHIC2 to regulate cytokine receptor expression in mouse and human CD8+ T cells. Among the regulated cytokine receptors, interleukin-27 receptor α is essential for tumor growth control mediated by Stub1/Chic2 knockout CD8+ T cells. Together, these findings establish the STUB1–CHIC2 complex as a regulator of cytokine receptor expression in CD8+ T cells and provide rationale for inhibiting this pathway to enhance CD8+ T cell-mediated anti-tumor immunity. LaFleur, Milling et al. perform an in vivo CRISPR screen of CD8+ T cells responding to tumors. They identify the E3 ubiquitin ligase STUB1 as a potent negative regulator of CD8+ T cell responses in tumors.
期刊介绍:
Nature Immunology is a monthly journal that publishes the highest quality research in all areas of immunology. The editorial decisions are made by a team of full-time professional editors. The journal prioritizes work that provides translational and/or fundamental insight into the workings of the immune system. It covers a wide range of topics including innate immunity and inflammation, development, immune receptors, signaling and apoptosis, antigen presentation, gene regulation and recombination, cellular and systemic immunity, vaccines, immune tolerance, autoimmunity, tumor immunology, and microbial immunopathology. In addition to publishing significant original research, Nature Immunology also includes comments, News and Views, research highlights, matters arising from readers, and reviews of the literature. The journal serves as a major conduit of top-quality information for the immunology community.