Volume 48, Issue 1 p. 164-180
RESEARCH COMMUNICATION
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LncRNA LOC100507144 acts as a novel regulator of CD44/Nanog/Sox2/miR-302/miR-21 axis in colorectal cancer

Nasim Ebrahimi

Nasim Ebrahimi

Division of Genetics, Department of Cell and Molecular Biology and Microbiology, Faculty of Biological Science and Technology, University of Isfahan, Isfahan, Iran

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Hajar Rezanejad

Hajar Rezanejad

Department of Biotechnology, Institute of Science and High Technology and Environmental Sciences, Graduate University of Advanced Technology, Kerman, Iran

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Malek Hossein Asadi

Corresponding Author

Malek Hossein Asadi

Department of Biotechnology, Institute of Science and High Technology and Environmental Sciences, Graduate University of Advanced Technology, Kerman, Iran

Correspondence

Sadeq Vallian, Division of Genetics, Department of Cell and Molecular Biology & Microbiology, Faculty of Biological Science and Technology, University of Isfahan, Isfahan 8174673441, Iran.

Email: [email protected]

Malek Hossein Asadi, Department of Biotechnology, Institute of Science and High Technology and Environmental Sciences, Graduate University of Advanced Technology, Kerman 7631885356, Iran.

Email: [email protected]

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Sadeq Vallian

Corresponding Author

Sadeq Vallian

Division of Genetics, Department of Cell and Molecular Biology and Microbiology, Faculty of Biological Science and Technology, University of Isfahan, Isfahan, Iran

Correspondence

Sadeq Vallian, Division of Genetics, Department of Cell and Molecular Biology & Microbiology, Faculty of Biological Science and Technology, University of Isfahan, Isfahan 8174673441, Iran.

Email: [email protected]

Malek Hossein Asadi, Department of Biotechnology, Institute of Science and High Technology and Environmental Sciences, Graduate University of Advanced Technology, Kerman 7631885356, Iran.

Email: [email protected]

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First published: 09 December 2021
Citations: 8

Funding information: University of Isfahan; Iran National Science Foundation

Abstract

Long noncoding RNAs (lncRNAs) appear as vital regulators and biomarkers in many human cancers. LOC100507144 is a validated lncRNA located in the neighborhood of CD44 in a head-to-head configuration, and its expression and function in cancer cells are still unknown. This research aimed to find out more about the expression and function of this lncRNA in colorectal cancer (CRC). Our expression data represented that the expression of LOC100507144 transcript was substantially higher in tumors with advanced stages, lymph node metastasis, and vascular invasion. Loss-of-function examinations demonstrated that LOC100507144 contributed to CRC cell proliferation by restricting apoptosis, cellular senescence, and promoting cell cycle. Gain-of-function experiments also confirmed these results. Our data illustrated that LOC100507144 enhanced the migration and the epithelial to mesenchymal transition (EMT) of CRC cells, accompanied by the generation of cells with stemness characteristics. Our findings revealed that the knocking-down of LOC100507144 inhibited the expression of crucial stemness factors, including CD44, Nanog, and Sox2, and accordingly resulted in suppressing their targets, miR-302 and miR-21. Overall, the current study's findings for the first time reveal that LOC100507144 could enhance CRC progression and metastasis through regulation of the CD44/Nanog/Sox2/miR-302/miR-21 axis.

CONFLICT OF INTERESTS

The authors declare that there are no conflict of interests.

DATA AVAILABILITY STATEMENT

The data that support the findings of this study are available on request from the corresponding author.