Long non-coding RNA MALAT1 regulates hyperglycaemia induced inflammatory process in the endothelial cells

Journal of Cellular and Molecular Medicine
Prasanth PuthanveetilS Chakrabarti

Abstract

To examine whether the long non-coding RNA (lncRNA) metastasis associated lung adenocarcinoma transcript 1 (MALAT1) is altered in the endothelial cells in response to glucose and the significance of such alteration. We incubated human umbilical vein endothelial cells with media containing various glucose levels. We found an increase in MALAT1 expression peaking after 12 hrs of incubation in high glucose. This increase was associated with parallel increase in serum amyloid antigen 3 (SAA3), an inflammatory ligand and target of MALAT1 and was further accompanied by increase in mRNAs and proteins of inflammatory mediators, tumour necrosis factor alpha (TNF-α) and interleukin 6 (IL-6). Renal tissue from the diabetic animals showed similar changes. Such cellular alterations were prevented following MALAT1 specific siRNA transfection. Results of this study indicate that LncRNA MALAT1 regulates glucose-induced up-regulation of inflammatory mediators IL-6 and TNF-α through activation of SAA3. Identification of such novel mechanism may lead to the development of RNA-based therapeutics targeting MALAT1 for diabetes-induced micro and macro vascular complications.

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Citations

Nov 10, 2015·Biochemical and Biophysical Research Communications·Ling ZhouXia Yin
Mar 12, 2016·Journal of the American College of Cardiology·Reinier A BoonStefanie Dimmeler
Mar 18, 2016·Atherosclerosis·Tian ZhouXia-xia Zheng
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Methods Mentioned

BETA
protein assay
ELISA
transfection

Software Mentioned

Graph Pad Prism

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