Targeting piRNA-137463 Inhibits Tumor Progression and Boosts Sensitivity to Immune Checkpoint Blockade via De Novo Cholesterol Biosynthesis in Lung Adenocarcinoma.

ABSTRACT: The important role of PIWI-interacting RNAs (piRNAs) in tumors has garnered increasing attention. However, research on their role in lung adenocarcinoma (LUAD) remains limited. Elevated levels of piRNA-137463 have been linked to poor prognosis in LUAD patients. Inhibition of piRNA-137463 curbed the proliferation, migration, and invasion of LUAD cells, enhanced T cell cytotoxicity through increased IFN-γ secretion, disrupted cholesterol metabolism, and reduced intracellular cholesterol, lipid raft content, and PD-L1 expression in LUAD cells. Bioinformatic prediction identified a potential interaction between piRNA-137463 and lncRNA LOC100128494. Inhibiting piRNA-137463 increased the stability and expression of LOC100128494, which further modulated insulin-induced gene 1 protein (INSIG1) lev

SUBMITTER: Zhan Y 

PROVIDER: S-EPMC11809383 | biostudies-literature | 2025 Feb

REPOSITORIES: biostudies-literature