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Current Stem Cell Research & Therapy

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ISSN (Print): 1574-888X
ISSN (Online): 2212-3946

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Research Article

The lncRNA Tincr Regulates the Abnormal Differentiation of Intestinal Epithelial Stem Cells in the Diabetic State Via the miR-668-3p/Klf3 Axis

Author(s): Li-Bin Sun, Ai-Ping Ding, Yue Han, Ming-Quan Song and Ti-Dong Shan*

Volume 18, Issue 1, 2023

Published on: 27 May, 2022

Page: [105 - 114] Pages: 10

DOI: 10.2174/1574888X17666220331124607

Price: $65

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Abstract

Background: Diabetes mellitus (DM) is among the most common chronic diseases, and diabetic enteropathy (DE), which is a complication caused by DM, is a serious health condition. Long noncoding RNAs (lncRNAs) are regulators of DE progression.

Objective: However, the mechanisms of action of multiple lncRNAs involved in DE remain poorly understood.

Methods: Reverse transcription-quantitative PCR (RT–qPCR) and in situ hybridization were used to analyze terminal differentiation-induced lncRNA (Tincr) expression in intestinal epithelial cells (IECs) in the DM state. Microarray analysis, bioinformatics analysis, and luciferase reporter assays were used to identify the genes targeted by Tincr. The role of miR-668-3p was then explored by up- and down-regulating its expression in vitro and in vivo.

Results: In this study, we observed that the level of lncRNA Tincr was increased in IECs in the DM state. More importantly, Tincr was associated with abnormal intestinal epithelial stem cell (IESC) differentiation in DM. Our mechanistic study demonstrated that Tincr is a major marker of Lgr5+ stem cells in DM. In addition, we investigated whether Tincr directly targets miR-668-3p and whether miR-668-3p targets Klf3. Our findings showed that Tincr sponged miR-668-3p, which attenuated abnormal IESC differentiation in DM by regulating Klf3 expression.

Conclusion: This study presents evidence of an essential role for Tincr in IESC differentiation in DM.

Keywords: Diabetes mellitus, Tincr, microRNA, intestinal epithelial stem cell, differentiation, diabetic enteropathy (DE).

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