Caveolin-1, a stress-related oncotarget, in drug resistance
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Zhiyu Wang1, Neng Wang2, Pengxi Liu1, Fu Peng3, Hailin Tang2, Qianjun Chen1, Rui Xu1, Yan Dai1, Yi Lin1, Xiaoming Xie2, Cheng Peng3 and Honglin Situ1
1 Department of Mammary Disease, Guangdong Provincial Hospital of Chinese Medicine, The Second Clinical Collage of Guangzhou University of Chinese Medicine, Guangzhou, China
2 Department of Breast Oncology, Sun Yat-sen Univeristy Cancer Center, State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Guangzhou, Guangdong, China
3 Pharmacy College, State Key Laboratory Breeding Base of Systematic Research, Development and Utilization of Chinese Medicine Resources, Chengdu University of Traditional Chinese Medicine, Guangzhou, China
Zhiyu Wang, email:
Keywords: Cav-1, cancer drug resistance, aerobic glycolysis, cancer stem cells, ABC transporters
Received: May 19, 2015 Accepted: September 08, 2015 Published: September 27, 2015
Caveolin-1 (Cav-1) is both a tumor suppressor and an oncoprotein. Cav-1 overexpression was frequently confirmed in advanced cancer stages and positively associated with ABC transporters, cancer stem cell populations, aerobic glycolysis activity and autophagy. Cav-1 was tied to various stresses including radiotherapy, fluid shear and oxidative stresses and ultraviolet exposure, and interacted with stress signals such as AMP-activated protein kinase. Finally, a Cav-1 fluctuation model during cancer development is provided and Cav-1 is suggested to be a stress signal and cytoprotective. Loss of Cav-1 may increase susceptibility to oncogenic events. However, research to explore the underlying molecular network between Cav-1 and stress signals is warranted.
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