Effect of miR-105-5p on Cell Proliferation, Colony Formation, and hTERT/P53/P21 Gene Expression in Multiple Cancer Cell Lines
Abstract
Aim: MicroRNAs are small endogenous RNA molecules that do not code for proteins but have the capacity to influence cancer development by promoting or inhibiting it. They play normal biological roles in regulating cell metabolism, development, apoptosis, and metastasis. While numerous studies on the functional mechanisms of miRNAs exist, there is limited research in the literature on miR-105-5p, a member of the miR-105 family. This study investigated the effects of miR-105-5p on cell proliferation, colony formation, and the expression of hTERT, P21, and P53 genes in five cancer cell lines: A549 (lung), Huh7 (liver), HCT116 (colon), MCF-7 (breast), and HeLa (cervix).
Method: The expression of miR-105-5p was both upregulated and downregulated through transfection in the selected cancer cell lines. After transfection, assays were performed to assess cell proliferation, colony-forming ability, and the expression of the hTERT, P21, and P53 genes.
Results: Overexpression of miR-105-5p inhibited proliferation in all cancer cell lines. miR-105-5p suppressed colony formation in A549, MCF-7, HeLa, and Huh7 cells. Differences in the expression levels of hTERT, P53, and P21 genes were observed in different cell lines due to the effect of the miR-105-5p mimic.
Conclusion: Direct or indirect differences in hTERT gene expression levels suggest that miR-105-5p may be useful in targeted therapy.
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References
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Details
Primary Language
English
Subjects
Regenerative Medicine (Incl. Stem Cells)
Journal Section
Research Article
Authors
Aylin Örs
0000-0001-6137-2439
Türkiye
Hamide Doğan
0000-0002-6002-6013
Türkiye
Eylem Nas
0000-0003-3799-9172
Türkiye
Aycan Sezan
0000-0003-1506-7083
Türkiye
Burcu Saygıdeğer
0000-0001-5179-0522
Türkiye
Early Pub Date
August 31, 2026
Publication Date
August 31, 2026
Submission Date
September 8, 2025
Acceptance Date
August 17, 2026
Published in Issue
Year 2026 Number: 30