Long noncoding RNA HOTTIP mediates SRF expression through sponging miR‐150 in hepatic stellate cells. Issue 2 (8th December 2018)

• Record Type: Journal Article
• Authors: Zheng, Jianjian; Mao, Yuqing; Dong, Peihong; Huang, Zhiming; Yu, Fujun
• Is Part Of: Journal of cellular and molecular medicine. Volume 23:Issue 2(2019)
• Page Start: 1572
• Page End: 1580
• Publication Date: 2018-12-08
• Subjects: competing endogenous RNA -- hepatic stellate cell -- HOTTIP -- miR‐150; Cytology; Medicine; Molecular Biology; Cytologie -- Périodiques; Médecine -- Périodiques; Biologie moléculaire -- Périodiques; Cytology -- Periodicals; Medicine -- Periodicals; Molecular biology -- Periodicals; 611.01805
• DOI: 10.1111/jcmm.14068
• Languages: English
• ISSNs: 1582-1838

Abstract

Abstract: HOXA transcript at the distal tip (HOTTIP) has been shown to be up‐regulated in a variety of cancers and is identified as an oncogenic long noncoding RNA. However, the biological role of HOTTIP in liver fibrosis is unclear. Here, we reported that HOTTIP was specifically overexpressed in activated hepatic stellate cells (HSCs). HOTTIP knockdown suppressed the activation and proliferation of HSCs. Luciferase reporter assay showed that HOTTIP and serum response factor (SRF) were targets of miR‐150. RNA binding protein immunoprecipitation assay indicated the interaction between miR‐150 and HOTTIP. Further study revealed that HOTTIP increased SRF expression as a competing endogenous RNA for miR‐150, thus prompting HSC activation. Taken together, we provide a novel HOTTIP‐miR‐150‐SRF signalling cascade in liver fibrosis.