MicroRNA-223 expression is upregulated in insulin resistant human adipose tissue

Tung Yueh Chuang, Hsiao Li Wu, Chen Chun Chen, Gloria M Gamboa, Lawrence C Layman, Michael Peter Diamond, Ricardo Azziz, Yen-Hao Chen

Research output: Contribution to journalArticle

33 Citations (Scopus)

Abstract

MicroRNAs (miRNAs) are short noncoding RNAs involved in posttranscriptional regulation of gene expression and influence many cellular functions including glucose and lipid metabolism. We previously reported that adipose tissue (AT) from women with polycystic ovary syndrome (PCOS) or controls with insulin resistance (IR) revealed a differentially expressed microRNA (miRNA) profile, including upregulated miR-93 in PCOS patients and in non-PCOS women with IR. Overexpressed miR-93 directly inhibited glucose transporter isoform 4 (GLUT4) expression, thereby influencing glucose metabolism. We have now studied the role of miR-223, which is also abnormally expressed in the AT of IR subjects. Our data indicates that miR-223 is significantly overexpressed in the AT of IR women, regardless of whether they had PCOS or not. miR-223 expression in AT was positively correlated with HOMA-IR. Unlike what is reported in cardiomyocytes, overexpression of miR-223 in human differentiated adipocytes was associated with a reduction in GLUT4 protein content and insulin-stimulated glucose uptake. In addition, our data suggests miR-223 regulates GLUT4 expression by direct binding to its 3′ untranslated region (3′UTR). In conclusion, in AT miR-223 is an IR-related miRNA that may serve as a potential therapeutic target for the treatment of IR-related disorders.

Original languageEnglish (US)
Article number943659
JournalJournal of Diabetes Research
Volume2015
DOIs
StatePublished - Jan 1 2015

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MicroRNAs
Insulin Resistance
Adipose Tissue
Insulin
Facilitative Glucose Transport Proteins
Polycystic Ovary Syndrome
Protein Isoforms
Glucose
Small Untranslated RNA
Gene Expression Regulation
3' Untranslated Regions
Lipid Metabolism
Adipocytes
Cardiac Myocytes
Ovary
Therapeutics

ASJC Scopus subject areas

  • Endocrinology, Diabetes and Metabolism
  • Endocrinology

Cite this

MicroRNA-223 expression is upregulated in insulin resistant human adipose tissue. / Chuang, Tung Yueh; Wu, Hsiao Li; Chen, Chen Chun; Gamboa, Gloria M; Layman, Lawrence C; Diamond, Michael Peter; Azziz, Ricardo; Chen, Yen-Hao.

In: Journal of Diabetes Research, Vol. 2015, 943659, 01.01.2015.

Research output: Contribution to journalArticle

Chuang, Tung Yueh ; Wu, Hsiao Li ; Chen, Chen Chun ; Gamboa, Gloria M ; Layman, Lawrence C ; Diamond, Michael Peter ; Azziz, Ricardo ; Chen, Yen-Hao. / MicroRNA-223 expression is upregulated in insulin resistant human adipose tissue. In: Journal of Diabetes Research. 2015 ; Vol. 2015.
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