Hairy and enhancer of split 1 (HES1)

Hairy and enhancer of split 1 (HES1) is a basic helix-loop-helix (bHLH) transcriptional repressor encoded by the HES1 gene, originally identified as the mammalian homolog of the Drosophila hairy gene[1]. HES1 is a critical effector of the Notch signaling pathway, acting to suppress gene expression via binding to specialized DNA motifs (N-box) and regulating neural progenitor maintenance, timing of neurogenesis, and balancing differentiation in multiple tissues. It also regulates osteoblast and osteoclast function, influencing bone development and mass, and protects cells from endoplasmic reticulum stress-induced apoptosis by repressing pro-apoptotic genes such as GADD34[1][2][3][4]. Dysregulation of HES1 is implicated in various pathological processes, including cancer, developmental disorders, and bone diseases. No drugs directly target HES1 in clinical practice, but its central role in key gene regulatory networks makes it a subject of ongoing biomedical research.

Other names

HES1Hairy/enhancer-of-split related with YRPW motif 1bHLHb39hHES1

Drugs or modulators would act by interfering with DNA binding, dimerization, protein-protein interactions, or stability of HES1. No established direct therapeutic drugs targeting HES1 are clinically available[1][4].