The RNA-binding protein MSI2 controls blood-tumor barrier permeability via LINC00667-Mediated IRF6 mRNA decay.

ABSTRACT: Increasing evidence shows that RNA-binding proteins play crucial roles in modulating the blood-tumor barrier (BTB) permeability in glioblastoma (GB). In this study, we identified elevated expression of Musashi RNA-binding protein 2 (MSI2) and Long intergenic nonprotein coding RNA 667 (LINC00667) in glioma co-cultured endothelial cells. MSI2 enhanced the stability of LINC00667, and its knockdown elevated the BTB permeability. In contrast, transcription factor interferon regulatory factor 6 (IRF6) exhibited reduced expression in glioma co-cultured endothelial cells, and its over-expression elevated the BTB permeability. Mechanistically, LINC00667 facilitated IRF6 mRNA degradation through Staufen1-mediated mRNA decay pathway. IRF6 inhibited the transcriptions of key tight junction associated

SUBMITTER: Gao R 

PROVIDER: S-EPMC12930058 | biostudies-literature | 2026 Jan

REPOSITORIES: biostudies-literature