MicroRNA-21 is a novel promising target in cancer radiation therapy
- 884 Downloads
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
- 1.Chatterjee S, Willis N, Locks SM, Mott JH, Kelly CG. Dosimetric and radiobiological comparison of helical tomotherapy, forward-planned intensity-modulated radiotherapy and two-phase conformal plans for radical radiotherapy treatment of head and neck squamous cell carcinomas. Br J Radiol. 2011;84:1083–90.CrossRefPubMedPubMedCentralGoogle Scholar
- 16.Chao TF, Xiong HH, Liu W, Chen Y, Zhang JX. MiR-21 mediates the radiation resistance of glioblastoma cells by regulating PDCD4 and hMSH2, Journal of Huazhong University of Science and Technology. Medical sciences = Hua zhong ke ji da xue xue bao. Yi xue Ying De wen ban = Huazhong keji daxue xuebao. Yixue Yingdewen Ban. 2013;33:525–9.Google Scholar
- 21.Grana TM, Rusyn EV, Zhou H, Sartor CI, Cox AD. Ras mediates radioresistance through both phosphatidylinositol 3-kinase-dependent and Raf-dependent but mitogen-activated protein kinase/extracellular signal-regulated kinase kinase-independent signaling pathways. Cancer Res. 2002;62:4142–50.PubMedGoogle Scholar
- 22.Gupta AK, McKenna WG, Weber CN, Feldman MD, Goldsmith JD, Mick R, et al. Local recurrence in head and neck cancer: relationship to radiation resistance and signal transduction. Clin Cancer Res : Off J Am Assoc Cancer Res. 2002;8:885–92.Google Scholar
- 25.Rosenzweig KE, Youmell MB, Palayoor ST, Price BD. Radiosensitization of human tumor cells by the phosphatidylinositol3-kinase inhibitors wortmannin and LY294002 correlates with inhibition of DNA-dependent protein kinase and prolonged G2-M delay. Clin Cancer Res: An Off J Am Assoc Cancer Res. 1997;3:1149–56.Google Scholar