1478-NEDD8 and SUMO2 Regulation of Epithelial Homeostasis

This scientific research article details how two specific ubiquitin-like proteins, NEDD8 and SUMO2, act as essential but opposing regulators of epithelial tissue homeostasis. By integrating genomic, transcriptomic, and proteomic data, the researchers discovered that NEDD8 is necessary for maintaining the progenitor cell state and aiding in wound healing, while SUMO2 is required for terminal differentiation. The study utilizes conditional knockout mice to demonstrate that a loss of these proteins leads to skin barrier dysfunction, severe inflammation, and distinct shifts in the microenvironmental niche. Specifically, NEDD8 loss triggers neutrophilic inflammation through NRF2 activation and disrupts RNA stability via the protein HNRNPU. Ultimately, the findings reveal a sophisticated RNA-protein regulatory axis where these protein modifiers coordinate the delicate balance between cell regeneration and tissue maturation.References:Winge M C G, Jackrazi L V, Porter D F, et al. Ubiquitin-like proteins NEDD8 and SUMO2 control epithelial homeostasis, regeneration, and inflammation[J]. Science, 2026, 392(6805): eaeb3900.前往小宇宙评论区与主播互动