LncRNA LINC-PINT controls lymphatic function and inflammatory profile in lymphedema.

ABSTRACT: Lymphedema is a lymphatic dysfunction leading to an accumulation of fluid and fat in the arm or leg. Here, we performed noncoding RNA profiling of human breast cancer-induced secondary lymphedema. We identified the long intergenic non-protein coding RNA, P53-induced transcript (LINC-PINT), as essential for the lymphedema development. LINC-PINT is the most expressed lncRNA in human lymphatic endothelial cells (LECs) under stress condition. Knocking down LINC-PINT in LECs promotes the expression of inflammation-related genes. Mechanistically, ATAC-seq revealed that LINC-PINT induces the transcription of genes involved in lymphangiogenesis and immune cell adhesion by increasing chromatin accessibility. Notably, LINC-PINT deficiency impairs LEC proliferation,

SUBMITTER: Laugero N 

PROVIDER: S-EPMC12710707 | biostudies-literature | 2025 Dec

REPOSITORIES: biostudies-literature