Document Detail

MicroRNA-590 attenuates lipid accumulation and pro-inflammatory cytokine secretion by targeting lipoprotein lipase gene in human THP-1 macrophages.
MedLine Citation:
PMID:  25149060     Owner:  NLM     Status:  Publisher    
BACKGROUND: Accumulating evidence suggests that microRNA-590 (miR-590) has protective effects on cardiovascular diseases, but the mechanism is unknown. Interestingly, previous studies from our laboratory and others have shown that macrophage-derived lipoprotein lipase (LPL) might accelerate atherosclerosis by promoting lipid accumulation and inflammatory response. However, the regulation of LPL at the post-transcriptional level by microRNAs has not been fully understood. In this study, we explored whether miR-590 affects the expression of LPL and its potential subsequent effects on lipid accumulation and pro-inflammatory cytokine secretion in human THP-1 macrophages.
METHODS AND RESULTS: Using bioinformatics analyses and dual-luciferase reporter assays, we found that miR-590 directly inhibited LPL protein and mRNA expression by targeting LPL 3'UTR. LPL Activity Assays showed that miR-590 reduced LPL activity in the culture media. Oil Red O staining and high-performance liquid chromatography assays showed that miR-590 had inhibitory effects on the lipid accumulation in human THP-1 macrophages. We also illustrated that miR-590 alleviated pro-inflammatory cytokine secretion in human THP-1 macrophages as measured by ELISA. With the method of small interfering RNA, we found that LPL siRNA can inhibit the miR-590 inhibitor-induced increase in lipid accumulation and secretion of pro-inflammatory cytokines in oxLDL-treated human THP-1 macrophages.
CONCLUSIONS: MiR-590 attenuates lipid accumulation and pro-inflammatory cytokine secretion by targeting LPL gene in human THP-1 macrophages. Therefore, targeting miR-590 may offer a promising strategy to treat atherosclerotic cardiovascular diseases.
Ping-Ping He; Xin-Ping Ouyang; Yan-Yan Tang; Li Liao; Zong-Bao Wang; Yun-Cheng Lv; Guo-Ping Tian; Guo-Jun Zhao; Liang Huang; Feng Yao; Wei Xie; Yu Lin Tang; Wu-Jun Chen; Min Zhang; Yuan Li; Jian-Feng Wu; Juan Peng; Xiang-Yu Liu; Xi-Long Zheng; Wei-Dong Yin; Chao-Ke Tang
Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2014-8-19
Journal Detail:
Title:  Biochimie     Volume:  -     ISSN:  1638-6183     ISO Abbreviation:  Biochimie     Publication Date:  2014 Aug 
Date Detail:
Created Date:  2014-8-24     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  1264604     Medline TA:  Biochimie     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Copyright Information:
Copyright © 2014. Published by Elsevier B.V.
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