Angiopoietin-like protein 2 mediates vasculopathy-driven fibrogenesis in a mouse model of systemic sclerosis.

ABSTRACT: Vasculopathy is a common hallmark of various fibrotic disorders, including systemic sclerosis (SSc), yet its underlying etiology and contribution to fibrogenesis remain ill defined. In SSc, the vasculopathy typically precedes the onset of fibrosis, and we observed that this phenomenon is recapitulated in the Snail transgenic mouse model of SSc. The vascular anomalies manifest as deformed vessels, endothelial cell dysfunction, and vascular leakage. Our investigation into the underlying mechanism of this phenotype revealed that angiopoietin-like protein 2 (ANGPTL2), secreted by the Snail transgenic keratinocytes, is a principal driver of fibrotic vasculopathy. In endothelial cells, ANGPTL2 upregulates profibrotic genes, downregulates various junctional proteins, and prompts the acquisition o

SUBMITTER: Saha D 

PROVIDER: S-EPMC12321390 | biostudies-literature | 2025 Aug

REPOSITORIES: biostudies-literature