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Long noncoding RNA LINC01606 protects colon cancer cells from ferroptotic cell death and promotes stemness by SCD1-Wnt/β-catenin-TFE3 feedback loop signalling.
- Source :
-
Clinical and translational medicine [Clin Transl Med] 2022 Apr; Vol. 12 (4), pp. e752. - Publication Year :
- 2022
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Abstract
- Background: Ferroptosis is principally caused by iron catalytic activity and intracellular lipid peroxidation. Long noncoding RNAs (lncRNAs) play crucial roles in tumorigenesis. However, the potential interplay between lncRNA LINC01606 and ferroptosis in colon cancer remains elusive.<br />Methods: The expression level of LNC01606 in colon cancer tissue was detected by quantitative real-time polymerase chain reaction. The functional role of LNC01606 was investigated by gain- and loss-of-function assays both in vitro and in vivo. The LINC01606-SCD1-Wnt/β-catenin-TFE3 axis were screened and validated by DNA/RNA pull down, gas chromatography-mass spectrometry, RNA immunoprecipitation and dual-luciferase reporter.<br />Results: The expression of lncRNA LINC01606 was frequently upregulated in human colon cancer and strongly associated with a poor prognosis. LINC01606 functioned as an oncogene and promotes colon cancer cell growth, invasion and stemness both in vitro and in vivo. Moreover, LINC01606 protected colon cancer cells from ferroptosis by decreasing the concentration of iron, lipid reactive oxygen species, mitochondrial superoxide and increasing mitochondrial membrane potential. Mechanistically, LINC01606 enhanced the expression of stearoyl-CoA desaturase 1 (SCD1), serving as a competing endogenous RNA to modulate miR-423-5p expression, subsequently activating the canonical Wnt/β-catenin signaling, and transcription factor binding to IGHM enhancer 3 (TFE3) increased LINC01606 transcription after recruitment to the promoter regions of LINC01606. Furthermore, we confirmed that upregulated LINC01606 and Wnt/β-catenin formed a positive feedback regulatory loop, further inhibiting ferroptosis and enhancing stemness.<br />Conclusions: LINC01606 functions as an oncogene to facilitate tumor cell stemness, proliferation and inhibit ferroptosis and is a promising therapeutic target for colon cancer.<br /> (© 2022 The Authors. Clinical and Translational Medicine published by John Wiley & Sons Australia, Ltd on behalf of Shanghai Institute of Clinical Bioinformatics.)
- Subjects :
- Basic Helix-Loop-Helix Leucine Zipper Transcription Factors genetics
Basic Helix-Loop-Helix Leucine Zipper Transcription Factors metabolism
Cell Death
Cell Proliferation genetics
Cell Transformation, Neoplastic genetics
Feedback
Gene Expression Regulation, Neoplastic genetics
Humans
Iron metabolism
Stearoyl-CoA Desaturase genetics
Stearoyl-CoA Desaturase metabolism
beta Catenin genetics
beta Catenin metabolism
Colonic Neoplasms genetics
Colonic Neoplasms metabolism
Colonic Neoplasms pathology
MicroRNAs genetics
MicroRNAs metabolism
RNA, Long Noncoding genetics
RNA, Long Noncoding metabolism
Subjects
Details
- Language :
- English
- ISSN :
- 2001-1326
- Volume :
- 12
- Issue :
- 4
- Database :
- MEDLINE
- Journal :
- Clinical and translational medicine
- Publication Type :
- Academic Journal
- Accession number :
- 35485210
- Full Text :
- https://doi.org/10.1002/ctm2.752