Cited by 271MicroRNA in disease regulationAngiogenesis and VEGF in CancerNitric Oxide and Endothelin Effects

MicroRNA‐320 EXPRESSION IN MYOCARDIAL MICROVASCULAR ENDOTHELIAL CELLS AND ITS RELATIONSHIP WITH INSULIN‐LIKE GROWTH FACTOR‐1 IN TYPE 2 DIABETIC RATS

Wang, XH, Qian, RZ, Zhang, W, Chen, SF, Jin, HM, Hu, RM·2009·Clinical and Experimental Pharmacology and Physiology

Abstract

SUMMARY: The aim of the present study was to determine the role of myocardial microvascular endothelial cells (MMVEC) in impaired angiogenesis of type 2 diabetic Goto‐Kakizaki (GK) rats. A microRNA (miRNA) microarray was used to assess miRNA expression in MMVEC from GK and Wistar rats. Upregulation of miRNA‐320 was observed in MMVEC from GK rats using real‐time reverse transcription–polymerase chain reaction (RT‐PCR). So far, nine miRNAs have been reported to target angiogenic factors and/or receptors, including kinase insert domain containing receptor (Flk‐1), insulin‐like growth factor 1 (IGF‐1) and insulin‐like growth factor 1 receptor (IGF‐1R). The predicted genes targeted by miR‐320 include Flk‐1, IGF‐1 and IGF‐1R. Western blot analysis and RT‐PCR were used to analyse the protein and mRNA expression, respectively, of the putative genes IGF‐1 and IGF‐1R. The expression of IGF‐1 and IGF‐1R proteins decreased significantly in diabetic MMVEC. However, the expression of IGF‐1 mRNA increased rather than decreased. The mRNA expression of IGF‐1R did not differ significantly between diabetic and control MMVEC. Transfection of an miR‐320 inhibitor into MMVEC from GK rats confirmed that miR‐320 impaired angiogenesis. The proliferation and migration of diabetic MMVEC improved after transfection of the miR‐320 inhibitor. In addition, the miR‐320 inhibitor significantly increased the expression of IGF‐1 protein, but had no effect on the expression of IGF‐1R. Eleven miRNAs were upregulated in MMVEC from GK rats compared with those in Wistar rats: let‐7e, miR‐129, miR‐291‐5p, miR‐320, miR‐327, mir‐333, miR‐363–5p, miR‐370, miR‐494, miR‐503 and miR‐664. The results indicate that upregulation of miR‐320 in MMVEC from GK rats may be responsible for the inconsistency between the expression of IGF‐1 protein and mRNA and therefore related to impaired angiogenesis in diabetes. Transfection of an miR‐320 inhibitor may be a therapeutic approach for the treatment of impaired angiogenesis in diabetes.

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Crossref · 10.1111/j.1440-1681.2008.05057.x

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  • Hyperglycemia increases the expression of several microRNAs found in the endothelium, including miR-320, miR-221, miR-503, and miR-125b.

    “Hyperglycemia increases the expression of several microRNAs found in the endothelium, including miR-320, miR-221, miR-503, and miR-125b.”

    From The Vasculature in Prediabetes (2018) · cites this paper as [144]

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Authors
Wang, X., Qian, R., Zhang, W., Chen, S., Jin, H., & Hu, R.
Affiliations
Shanghai Medical College of Fudan University (CN)
Venue
Clinical and Experimental Pharmacology and Physiology
Publisher
Wiley
Published
2009-01-27
Volume
36
Issue
2
Pages
181-188
ISSN
  • 0305-1870 (ISSN-L)
  • 1440-1681
OpenAlex
W2042150160
Cited by
271
References
38
Citations by year
2026: 4 · 2025: 9 · 2024: 8 · 2023: 5 · 2022: 8 · 2021: 15 · 2020: 9 · 2019: 15 · 2018: 18 · 2017: 28 · 2016: 7 · 2015: 17 · 2014: 28 · 2013: 26 · 2012: 24
FWCI
5.69
Type
journal article
Language
en
Open access
closed
Locations
  • Clinical and Experimental Pharmacology and Physiology (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Cancer Research › MicroRNA in disease regulation
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Angiogenesis and VEGF in Cancer
  • Health Sciences › Medicine › Physiology › Nitric Oxide and Endothelin Effects
Keywords
type 2 diabetes, insulin-like growth factor I, IGF-1 receptor, impaired angiogenesis, Goto-Kakizaki rats, miRNA expression profiling, endothelial cell proliferation and migration, let-7e, miR-129, miR-370
MeSH terms
Animals, Cells, Cultured, Coronary Vessels, Diabetes Mellitus, Experimental, Diabetes Mellitus, Type 2, Insulin-Like Growth Factor I, Myocardium, Transfection, Up-Regulation, Rats, Wistar, Neovascularization, Physiologic, Reverse Transcriptase Polymerase Chain Reaction, MicroRNAs, Endothelial Cells, Microarray Analysis, Rats, Microvessels

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