Insights about circadian clock in glioma: From molecular pathways to therapeutic drugs. (6th September 2022) - Wang, Zongqi
Abstract: Glioma is characterized as the most aggressive brain tumor that occurred in the central nervous system. The circadian rhythm is an essential cyclic change system generated by the endogenous circadian clock. Current studies found that the circadian clock affects glioma pathophysiology. It is still controversial whether the circadian rhythm disruption is a cause or an effect of tumorigenesis. This review discussed the association between cell cycle and circadian clock and provided a prominent molecular theoretical basis for tumor therapy. We illustrated the external factors affecting the circadian clock including thermodynamics, hypoxia, post‐translation, and microRNA, while the internal characteristics concerning the circadian clock in glioma involve stemness, metabolism, radiotherapy sensitivity, and chemotherapy sensitivity. We also summarized the molecular pathways and the therapeutic drugs involved in the glioma circadian rhythm. There are still many questions in this field waiting for further investigation. The results of glioma chronotherapy in sensitizing radiation therapy and chemotherapy have shown great therapeutic potential in improving clinical outcomes. These findings will help us further understand the characteristics of glioma pathophysiology. Abstract : We summarized the connection between cell cycle clock and circadian clock. Previous studies reported that circadian clock proteins can affect cyclin‐CDK complex expression through p21, c‐Myc, and Wee1, and then participate in the regulation of the cell cycle. The external factors that influence the circadian clock and the internal characteristic changes affected by the circadian clock are listed aside.