Long Non-Coding RNA (LncRNA)-ATB Promotes Inflammation, Cell Apoptosis and Senescence in Transforming Growth Factor-β1 (TGF-β1) Induced Human Kidney 2 (HK-2) Cells Via TGFβ/SMAD2/3 Signaling Pathway

Overview

Journal Med Sci Monit

Specialties General Medicine
Pathology

Date 2020 May 25

PMID 32447340

Citations 9

Authors

Han Sun

Cong Ke

Lin Zhang

Changjun Tian

Zhihui Zhang

Shuhua Wu

Affiliations

Soon will be listed here.

Abstract

BACKGROUND Renal fibrosis occurs in the end-stage of all chronic kidney disease. Transforming growth factor-ß1 (TGF-ß1) is a central contributor in fibrosis. Identifying effective biomarkers that targets TGF-ß1 is necessary for the development of therapeutic agents for kidney disease. In this study, we investigated the effects and mechanism of long non-coding RNA (LncRNA)-ATB in TGF-ß1 induced human kidney 2 (HK-2) cells. MATERIAL AND METHODS We investigated the effects of either overexpression or knockdown of LncRNA-ATB on inflammation, cell apoptosis, and senescence in TGF-ß1 induced HK-2 cells. TGF-ß1 induced HK-2 cells served as the cell model. The gene level was evaluated by quantitative real-time polymerase chain reaction (qRT-PCR) and protein expressions by western blot. Cell Counting Kit-8 (CCK-8) assay was performed for assessment of cell viability. Flow cytometry was applied for detection of cell apoptosis. Tumor necrosis factor (TNF)-alpha, interleukin (IL)-1ß, and IL-6 were measured by corresponding kits. RESULTS LncRNA-ATB was highly expressed in TGF-ß1 induced HK-2 cells. Inflammation, cell apoptosis, and senescence were enhanced by TGF-ß1 and these effects were all reduced by knockdown of LncRNA-ATB. Whereas overexpression of LncRNA-ATB had the opposite effects with knockdown of LncRNA-ATB. The TGFß/SMAD2/3 signaling pathway was activated by TGF-ß1 and this effect was further enhanced by LncRNA-ATB overexpression. Silencing LncRNA-ATB inhibited the TGFß/SMAD2/3 signaling pathway in TGF-ß1 induced cells. The effects of LncRNA-ATB overexpression aforementioned in TGF-ß1 induced cells were abolished by blockage of the TGFß/S0MAD2/3 signaling pathway. CONCLUSIONS LncRNA-ATB overexpression have promoting effects on inflammation, cell apoptosis and senescence in TGF-ß1 induced HK-2 cells via activating the TGFß/SMAD2/3 signaling pathway. LncRNA-ATB act as a key downstream mediator via activating the TGFß/SMAD2/3 signaling pathway and silencing LncRNA-ATB might be a new strategy for chronic kidney disease treatment.

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