Abstract
Background
Colorectal cancer (CRC) is one of the most common types of cancer worldwide. A number of dysregulated microRNAs (miRNAs) have been linked to CRC progression and treatment response and are thought to be promising prognostic biomarkers for this cancer. microRNA-330 (miR-330-5p) has been reported to inhibit cell proliferation through suppressing thymidylate synthase (TYMS). In the current study, miR-330-5p, TYMS, and their interactions were investigated to evaluate their therapeutic and diagnostic value for CRC treatment.
Methods
The expression levels of miR-330-5p and TYMS were evaluated in silico using TCGA datasets for CRC. Data validation was performed on a set of internal samples (100 pairs of CRC tumor specimens and adjacent non-cancerous samples) utilizing real-time PCR assay. The linkage between clinicopathological parameters and expression levels was also investigated.
Results
TCGA results indicated that miR-330-5p and TYMS were significantly upregulated and downregulated in the CRC, respectively. Real-time PCR results confirmed that the expression of miR-330-5p was significantly upregulated in tumor tissues relative to marginal tissues (P = 0.0005), whereas TYMS expression was significantly downregulated (P = 0.0001). The transcript level of miR-330-5p was associated with tumor stage and lymph node metastases.
Conclusion
The microRNA-330 inhibited cell proliferation by suppressing thymidylate synthase (TYMS) in colorectal cancer. Therefore, suggesting that they are valuable factors for further studies of alternative treatment and diagnostic methods.
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Acknowledgements
The authors are thankful to patients and their families for their contribution to the study.
Funding
This study was supported by a grant from the research deputy of the Department of Tuberculosis and Lung Diseases Research Center, University Tabriz University of Medical Sciences, Tabriz, Iran.
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(I). Conception and design: Leila Karimiand Touraj Asvadi Kermani. (II). Administrative support: Milad Jaberi. (III). Provision of study materials or patients: Milad Asadi. (IV). Collection and assembly of data: Habib Zarredar and Venus Zafari. (V). Data analysis and interpretation: Milad Asadi and Soghra Bornehdeli. (VI). Manuscript writing: Leila Karimi. (VII). Final approval of manuscript: all authors.
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This study was confirmed by the Ethical Committee of Tabriz University of Medical Sciences (IR.TBZMED.REC.1399.206) and written informed consent was obtained from all patients.
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Karimi, L., Jaberi, M., Asadi, M. et al. Significance of microRNA-330-5p/TYMS Expression Axis in the Pathogenesis of Colorectal Tumorigenesis. J Gastrointest Canc 53, 965–970 (2022). https://doi.org/10.1007/s12029-021-00695-x
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DOI: https://doi.org/10.1007/s12029-021-00695-x