Histone 4 lysine 20 tri-methylation: a key epigenetic regulator in chromatin structure and disease

Abstract

Chromatin is a vital and dynamic structure that is carefully regulated to maintain proper cell homeostasis. A great deal of this regulation is dependent on histone proteins which have the ability to be dynamically modified on their tails via various post-translational modifications (PTMs). While multiple histone PTMs are studied and often work in concert to facilitate gene expression, here we focus on the tri-methylation of histone H4 on lysine 20 (H4K20me3) and its function in chromatin structure, cell cycle, DNA repair, and development. The recent studies evaluated in this review have shed light on how H4K20me3 is established and regulated by various interacting partners and how H4K20me3 and the proteins that interact with this PTM are involved in various diseases. Through analyzing the current literature on H4K20me3 function and regulation, we aim to summarize this knowledge and highlights gaps that remain in the field.

Molecular subtypes of colorectal cancer in the era of precision oncotherapy: Current inspirations and future challenges

“…72 Loss of trimethylation of H4K20 is linked to shorter survival and elevated tumor recurrence rates in CRC. 73 To comprehend epigenetic regulation in CRC, patientderived organoids and mouse intestinal organoids were genetically engineered. 74 Results manifest that H4K20 trimethylation deletion mediated by lysine methyltransferase SUV420H2 is discovered to facilitate right-sided colorectal tumorigenesis over chromatin compaction epigenetically controlled, which unravels a promising avenue for CRC subtype-specific therapy.…”