Abstract:
:The ectopic proliferation, migration and invasion of vascular smooth muscle cells (VSMCs) contributes to the progression of various human vascular diseases. Accumulating evidence has demonstrated that microRNAs (miRs) exert vital functions in the proliferation and invasion of VSMCs. The current study aimed to elucidate the functions of miR‑125a‑5p and miR‑7 in VSMCs and investigate the associated molecular mechanisms. The results of EdU and reverse transcription‑quantitative PCR assays revealed that platelet‑derived growth factor (PDGF)‑BB enhanced the proliferation of VSMCs and significantly reduced the expression of miR‑125a‑5p and miR‑7. miR‑125a‑5p or miR‑7 overexpression significantly ameliorated PDGF‑BB‑induced proliferation, migration and invasion of VSMCs. Furthermore, the results demonstrated that epidermal growth factor receptor (EGFR) may be a target mRNA of miR‑125a‑5p and miR‑7 in VSMCs. The results of western blot analysis indicated that co‑transfection of miR‑125a‑5p mimics or miR‑7 mimics distinctly decreased the protein expression of EGFR in EGFR‑overexpressed VSMCs. Moreover, rescue experiments indicated that EGFR overexpression alleviated the suppressive impact of the miR‑125a‑5p and miR‑7 s on the growth, migration and invasion of VSMCs. In conclusion, the current study identified that miR‑125a‑5p and miR‑7 repressed the growth, migration and invasion of PDGF‑BB‑stimulated VSMCs by, at least partially, targeting EGFR. The current study verified that miR‑125a‑5p and miR‑7 may be used as feasible therapeutic targets for cardiovascular diseases.
journal_name
Mol Med Repjournal_title
Molecular medicine reportsauthors
Zhou H,Lin S,Hu Y,Guo D,Wang Y,Li Xdoi
10.3892/mmr.2021.12347keywords:
["epidermal growth factor receptor","growth","invasion vascular smooth muscle cells","micro RNA‑125a‑5p","micro RNA‑7","migration"]subject
Has Abstractpub_date
2021-10-01 00:00:00issue
4eissn
1791-2997issn
1791-3004pii
708journal_volume
24pub_type
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