MicroRNA-21 is a novel promising target in cancer radiation therapy
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MicroRNAs (miRNAs) represent an important nonprotein part of the human genome in tumor biology. Among the several types of miRNAs, microRNA-21 (miR-21) is dysregulated in several types of cancer and plays a key role in carcinogenesis, recurrence, and metastasis. Thus, it can be a potential target for cancer therapy including radiation therapy. In this review, we focus on miR-21, which has been identified in human cancer tissues, to suggest reasonable strategies for future research. miR-21 may have an influence on cell cycle, DNA damage repair, apoptosis, autophagy, and hypoxia of cancer during irradiation. We review the use of miR-21 in cancer radiation therapy and describe the known functions and possible underlying molecular mechanisms of miR-21 in radiosensitivity and radioresistance. Furthermore, the current and potential future applications of miR-21 in cancer radiation therapy are also discussed.
KeywordsMicroRNA miR-21 Cancer Radiotherapy Radiosensitivity
This work was supported by the Natural Science Foundation of China (No. 81272504), Innovation Team [No. LJ201123 (EH11)], A Project Funded by the Priority Academic Program Development of Jiangsu Higher Education Institutions (PAPD) (JX10231801), grants from Key Academic Discipline of Jiangsu Province “Medical Aspects of Specific Environments”, Six Major Talent Peak Project of Jiangsu Province (2013-WSN-040), Jiangsu Provincial Science and Technology Projects [BK2011854 (DA11)], and “333” Project of Jiangsu Province [BRA2012210 (RS12)].
Conflicts of interest
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