11May 2022
LncPTSR Triggers Vascular Remodeling in Pulmonary Hypertension by Regulating [Ca2+]i in Pulmonary Arterial Smooth Muscle Cells

LncPTSR Triggers Vascular Remodeling in Pulmonary Hypertension by Regulating [Ca2+]i in Pulmonary Arterial Smooth Muscle Cells

Pulmonary hypertension (PH) is characterized by vascular remodelling and a sustained increase in right ventricular systolic pressure. Using RNA-sequencing data and rapid amplification of cDNA ends, an lncRNA neighboring the locus of ATPase plasma membrane Ca2+ transporting 4 (PMCA4) was identified and named lncPTSR. Gene interruption or overexpression assays revealed that lncPTSR negatively regulates rat PASMC proliferation, apoptosis, and migration. LncPTSR interruption in Sprague Dawley rats using adeno-asso. The present study suggests that lncPTSR participates in pulmonary artery remodelling via modulating the expression of PMCA4 and intracellular Ca2 + homeostasis downstream of PDGF-BB–driven mitogen-activated protein kinase/extracellular signal-regulated kinase signalling. These results suggest that lncPTSR may be a promising therapeutic target in PH treatment.

  • #pulmonology

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