Abstract
Purpose
Colorectal cancer (CRC) is one of the most commonly diagnosed malignant tumors and highly heterogeneous diseases. More recently, RNA expression profiles have been used as prognostic cancer markers. In this regard, the expression of small non-coding RNAs like tRNA-derived fragments (tRFs) in tumor tissue has potential diagnostic values in metastatic cancer.
Method
Sixty postoperative CRC tissue samples, consisting of 30 cancers and 30 adjacent normal tissues, were collected from cancer patients. We evaluated MINTbase database to select tRNA-derived fragments. The expression levels of miR-1280, miR1308, tRNA-ValAAC/CAC, and tRNA-AspGTC were measured by TaqMan quantitative reverse transcription PCR technology. Also, we have evaluated the correlation between the levels of tRFs gene expression and clinicopathological of CRC disease.
Result
The three tRFs derived from tRF/miR-1280, tRNA-ValAAC/CAC, and tRNA-AspGTC downregulated in tumor tissues (all, p < 0.0001). These tRFs have lower expression in stage IV in comparison with stage III. The tRFs derived from tRNA-ValAAC (p = 0.005) and tRNA-AspGTC (p = 0.034) showed the decreased expression in CRC patients with distant metastasis.
Conclusion
The present study demonstrated that low expression of tRF/miR-1280, tRNA-ValAAC/CAC, and tRNA-AspGTC was significantly associated with metastatic stage and more aggressive tumor behavior of CRC disease. Our finding promising the potential of using tRFs as biomarkers for cancer diagnosis.
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The data and materials that support the findings of this study are available from the corresponding author upon reasonable request.
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Funding
This project was given funds from the Oncopathology Research Center, Iran University of Medical Sciences, Tehran, Iran (grant number 97–4-28–13918).
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This article was conducted under the Ethics Committee of Iran medical university (IR.IUMS.REC.1397.1121). All of the cases and controls gave their informed consent before their inclusion in the study.
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Sahlolbei, M., Fattahi, F., Vafaei, S. et al. Relationship Between Low Expressions of tRNA-Derived Fragments with Metastatic Behavior of Colorectal Cancer. J Gastrointest Canc 53, 862–869 (2022). https://doi.org/10.1007/s12029-021-00773-0
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DOI: https://doi.org/10.1007/s12029-021-00773-0