CBX4 stabilizes NEUROD1 through SUMO-ubiquitin crosstalk to delay β-cell senescence
Aging-associated β-cell senescence is a key driver of type 2 diabetes mellitus (T2DM). However, its associated molecular mechanisms remain poorly explored. This study identifies Chromobox 4 (CBX4), a Polycomb group protein with SUMO E3 ligase activity, as an essential regulator of β-cell aging and function. The results...