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Updated: Sep 26, 2025

Author Spotlight: Epigenetic Modifications and Metabolic Rewiring as Targets for Cancer Therapy
Published on: October 18, 2024
Oncometabolites drive tumorigenesis by enhancing protein acylation: from chromosomal remodelling to nonhistone
1Department of Ophthalmology, Shanghai Key Laboratory of Orbital Diseases and Ocular Oncology, Ninth People's Hospital, Shanghai JiaoTong University School of Medicine, Shanghai, 200025, P.R. China.
Abstract:
Metabolites are intermediate products of cellular metabolism catalysed by various enzymes. Metabolic remodelling, as a biochemical fingerprint of cancer cells, causes abnormal metabolite accumulation. These metabolites mainly generate energy or serve as signal transduction mediators via noncovalent interactions. After the development of highly sensitive mass spectrometry technology, various metabolites were shown to covalently modify proteins via forms of lysine acylation, including lysine acetylation, crotonylation, lactylation, succinylation, propionylation, butyrylation, malonylation, glutarylation, 2-hydroxyisobutyrylation and β-hydroxybutyrylation. These modifications can regulate gene expression and intracellular signalling pathways, highlighting the extensive roles of metabolites. Lysine acetylation is not discussed in detail in this review since it has been broadly investigated. We focus on the nine aforementioned novel lysine acylations beyond acetylation, which can be classified into two categories: histone acylations and nonhistone acylations. We summarize the characteristics and common functions of these acylation types and, most importantly, provide a glimpse into their fine-tuned control of tumorigenesis and potential value in tumour diagnosis, monitoring and therapy.
Insights
Metabolites can covalently modify proteins through novel lysine acylations, impacting gene expression and cell signaling. These modifications offer potential for cancer diagnosis and therapy.
Area of Science:
- Biochemistry
- Molecular Biology
- Cancer Research
Background:
- Metabolites are key intermediates in cellular metabolism.
- Metabolic reprogramming is a hallmark of cancer cells, leading to abnormal metabolite accumulation.
- Metabolites can noncovalently interact with proteins to regulate cellular processes.
Purpose of the Study:
- To review novel lysine acylations beyond acetylation.
- To explore the characteristics and functions of nine specific lysine acylations.
- To highlight the role of these modifications in tumorigenesis and their diagnostic/therapeutic potential.
Main Methods:
- Review of existing literature on metabolite-protein interactions.
- Focus on mass spectrometry-based identification of lysine acylations.
- Classification of acylation types into histone and nonhistone modifications.
Main Results:
- Metabolites covalently modify proteins via various lysine acylations (e.g., crotonylation, lactylation, succinylation).
- These modifications regulate gene expression and intracellular signaling pathways.
- Nine novel lysine acylations (excluding acetylation) are discussed, categorized as histone or nonhistone.
Conclusions:
- Novel lysine acylations play significant roles in cellular functions and cancer development.
- These acylation patterns serve as potential biomarkers for tumor diagnosis, monitoring, and therapeutic targets.
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