Frontiers in Cardiovascular Medicine (Sep 2021)

Expression and Functional Analysis of lncRNAs Involved in Platelet-Derived Growth Factor-BB-Induced Proliferation of Human Aortic Smooth Muscle Cells

  • Jia-Jie Lin,
  • Wei Chen,
  • Wei Chen,
  • Miao Gong,
  • Xin Xu,
  • Mei-Yang Du,
  • Si-Fan Wang,
  • Li-Yun Yang,
  • Yu Wang,
  • Ke-Xin Liu,
  • Peng Kong,
  • Bin Li,
  • Kun Liu,
  • Yi-Ming Li,
  • Li-Hua Dong,
  • Shao-Guang Sun

DOI
https://doi.org/10.3389/fcvm.2021.702718
Journal volume & issue
Vol. 8

Abstract

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Abnormal proliferation of vascular smooth muscle cells (VSMCs) is a common feature of many vascular remodeling diseases. Because long non-coding RNAs (lncRNAs) play a critical role in cardiovascular diseases, we analyzed the key lncRNAs that regulate VSMC proliferation. Microarray analysis identified 2,643 differentially expressed lncRNAs (DELs) and 3,720 differentially expressed coding genes (DEGs) between fetal bovine serum (FBS) starvation-induced quiescent human aortic smooth muscle cells (HASMCs) and platelet-derived growth factor-BB (PDGF-BB)-stimulated proliferative HASMCs. Gene Ontology and pathway analyses of the identified DEGs and DELs demonstrated that many lncRNAs were enriched in pathways related to cell proliferation. One of the upregulated lncRNAs in proliferative HASMC was HIF1A anti-sense RNA 2 (HIF1A-AS2). HIF1A-AS2 suppression decreased HASMC proliferation via the miR-30e-5p/CCND2 mRNA axis. We have thus identified key DELs and DEGs involved in the regulation of PDGF-BB induced HASMC proliferation. Moreover, HIF1A-AS2 promotes HASMC proliferation, suggesting its potential involvement in VSMC proliferative vascular diseases.

Keywords