1. Histone lactylation drives CD8+T cell metabolism and function
- Author
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Raychaudhuri, Deblina, Singh, Pratishtha, Chakraborty, Bidisha, Hennessey, Mercedes, Tannir, Aminah J., Byregowda, Shrinidhi, Natarajan, Seanu Meena, Trujillo-Ocampo, Abel, Im, Jin Seon, and Goswami, Sangeeta
- Abstract
The activation and functional differentiation of CD8+T cells are linked to metabolic pathways that result in the production of lactate. Lactylation is a lactate-derived histone post-translational modification; however, the relevance of histone lactylation in the context of CD8+T cell activation and function is not known. Here, we show the enrichment of H3K18 lactylation (H3K18la) and H3K9 lactylation (H3K9la) in human and mouse CD8+T cells, which act as transcription initiators of key genes regulating CD8+T cell function. Further, we note distinct patterns of H3K18la and H3K9la in CD8+T cell subsets linked to their specific metabolic profiles. Additionally, we find that modulation of H3K18la and H3K9la by targeting metabolic and epigenetic pathways influence CD8+T cell effector function, including antitumor immunity, in preclinical models. Overall, our study uncovers the potential roles of H3K18la and H3K9la in CD8+T cells.
- Published
- 2024
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