Nutrient-driven histone code determines exhausted CD8+ T cell fates

• 成果类型: Article
• 署名作者: Ma, Shixin; Dahabieh, Michael S.; Mann, Thomas H.; Zhao, Steven; McDonald, Bryan; Song, Won-Suk; Chung, H. Kay; Farsakoglu, Yagmur; Garcia-Rivera, Lizmarie; Hoffmann, Filipe Araujo; Xu, Shihao; Du, Victor Y.; Chen, Dan; Furgiuele, Jesse; LaPorta, Michael A.; Jacobs, Emily; DeCamp, Lisa M.; Oswald, Brandon M.; Sheldon, Ryan D.; Ellis, Abigail E.; Liu, Longwei; He, Peixiang; Wang, Yingxiao; Jang, Cholsoon; Jones, Russell G.; Kaech, Susan M.
• 署名单位: Salk Institute; Van Andel Institute; University of California System; University of California Irvine; University of North Carolina; University of North Carolina Chapel Hill; University of North Carolina School of Medicine; University of North Carolina; University of North Carolina Chapel Hill; Van Andel Institute; University of Southern California; University of California System; University of California San Diego
• 刊物名称: SCIENCE
• ISSN/ISSBN: 0036-8114
• DOI: 10.1126/science.adj3020
• 发表日期: 2025-02-07
• 关键词: gene-expression; transcription; pd-1; nfat; dysfunction; biogenesis; progenitor; responses; subsets; acss2

摘要

Exhausted T cells (TEX) in cancer and chronic viral infections undergo metabolic and epigenetic remodeling, impairing their protective capabilities. However, the impact of nutrient metabolism on epigenetic modifications that control TEX differentiation remains unclear. We showed that TEX cells shifted from acetate to citrate metabolism by down-regulating acetyl-CoA synthetase 2 (ACSS2) while maintaining ATP-citrate lyase (ACLY) activity. This metabolic switch increased citrate-dependent histone acetylation, mediated by histone acetyltransferase KAT2A-ACLY interactions, at TEX signature genes while reducing acetate-dependent histone acetylation, dependent on p300-ACSS2 complexes, at effector and memory T cell genes. Nuclear ACSS2 overexpression or ACLY inhibition prevented TEX differentiation and enhanced tumor-specific T cell responses. These findings unveiled a nutrient-instructed histone code governing CD8(+) T cell differentiation, with implications for metabolic- and epigenetic-based T cell therapies.