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Site Specific Lysine Acetylation of Histones for Nucleosome Reconstitution using Genetic Code Expansion in Escherichia coli
Published on: December 26, 2020
Histone lactylation: a new target for overcoming immune evasion and therapy resistance
Fatemeh Ghadyani1, Pouyan Zandi2,3, Soudeh Ghafouri-Fard4
1Student Research Committee, School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
Abstract:
While metabolic reprogramming in cancer is well-documented, the epigenetic consequences of lactate accumulation-particularly histone lactylation-remain underexplored as a unifying mechanism driving immune evasion and therapy resistance. This review synthesizes emerging evidence that lactylation remodels the tumor microenvironment (TME) by polarizing macrophages, exhausting T cells, and stabilizing oncogenic transcripts. We highlight the dual roles of lactylation as both a metabolic sensor and a mediator of immunosuppression, underscoring its potential as a therapeutic target. Unresolved questions, such as context-dependent effects of specific lactylation sites (e.g., H3K18la and H3K9la) and the interplay with other post-translational modifications, are critically evaluated. We also propose strategies to exploit lactylation pathways for combination therapies.
Insights
Histone lactylation, driven by lactate accumulation in cancer, promotes immune evasion and therapy resistance by altering the tumor microenvironment. Targeting lactylation offers a promising strategy for novel cancer therapies.
Area of Science:
- Oncology
- Epigenetics
- Immunology
Background:
- Metabolic reprogramming is a hallmark of cancer.
- Lactate accumulation is common in the tumor microenvironment.
- Epigenetic modifications, like histone lactylation, are emerging as key regulators of cancer progression.
Purpose of the Study:
- To review the emerging evidence on histone lactylation's role in cancer.
- To explore lactylation's impact on the tumor microenvironment (TME), immune evasion, and therapy resistance.
- To identify potential therapeutic strategies targeting lactylation.
Main Methods:
- Literature review synthesizing current research on histone lactylation in cancer.
- Analysis of lactylation's effects on immune cells (macrophages, T cells) and oncogenic transcripts.
- Evaluation of unresolved questions and future research directions.
Main Results:
- Lactylation remodels the TME by polarizing macrophages and exhausting T cells.
- Histone lactylation stabilizes oncogenic transcripts, contributing to cancer progression.
- Lactylation acts as a metabolic sensor and mediator of immunosuppression.
Conclusions:
- Histone lactylation is a critical epigenetic mechanism linking cancer metabolism to immune evasion and therapy resistance.
- Targeting lactylation pathways presents a promising avenue for developing novel combination therapies.
- Further research is needed to understand context-dependent lactylation effects and interplay with other modifications.
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