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Journal of Cancer Research and Clinical Oncology

Erschienen in:

03.07.2018 | Review - Cancer Research

Autophagy-regulating microRNAs: potential targets for improving radiotherapy

verfasst von: Hongbin Li, Xiaodong Jin, Bing Chen, Ping Li, Qiang Li

Erschienen in: Journal of Cancer Research and Clinical Oncology | Ausgabe 9/2018

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Abstract

Background

Radiotherapy (RT) is one of the most important therapeutic strategies against cancer. However, resistance of cancer cells to radiation remains a major challenge for RT. Thus, novel strategies to overcome cancer cell radioresistance are urgent. Macroautophagy (hereafter referred to as autophagy) is a biological process by which damaged cell components can be removed and accordingly represent a cytoprotective mechanism. Because radiation-induced autophagy is associated with either cell death or radioresistance of cancer cells, a deeper understanding of the autophagy mechanism triggered by radiation will expedite a development of strategies improving the efficacy of RT. MicroRNAs (miRNAs) are involved in many biological processes. Mounting evidence indicates that many miRNAs are involved in regulation of the autophagic process induced by radiation insult, but the underlying mechanisms remain obscure. Therefore, a deep understanding of the mechanisms of miRNAs in regulating autophagy and radioresistance will provide a new perspective for RT against cancer.

Methods

We summarized the recent pertinent literature from various electronic databases, including PubMed. We reviewed the radiation-induced autophagy response and its association of the role, function and regulation of miRNAs, and discussed the feasibility of targeting autophagy-related miRNAs to improve the efficacy of RT.

Conclusion

The beneficial or harmful effect of autophagy may depend on the types of cancer and stress. The cytoprotective role of autophagy plays a dominant role in cancer RT. For most tumor cells, reducing radiation-induced autophagy can improve the efficacy of RT. MiRNAs have been confirmed to take part in the autophagy regulatory network of cancer RT, the autophagy-regulating miRNAs therefore could be developed as potential targets for improving RT.

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Titel: Autophagy-regulating microRNAs: potential targets for improving radiotherapy
verfasst von: Hongbin Li
Xiaodong Jin
Bing Chen
Ping Li
Qiang Li
Publikationsdatum: 03.07.2018
Verlag: Springer Berlin Heidelberg
Erschienen in: Journal of Cancer Research and Clinical Oncology / Ausgabe 9/2018
Print ISSN: 0171-5216
Elektronische ISSN: 1432-1335
DOI: https://doi.org/10.1007/s00432-018-2675-8

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Autophagy-regulating microRNAs: potential targets for improving radiotherapy

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