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Fang C, Dai L, Wang C, Fan C, Yu Y, Yang L, Deng H, Zhou Z. Secretogranin II impairs tumor growth and angiogenesis by promoting degradation of hypoxia-inducible factor-1α in colorectal cancer. Mol Oncol 2021; 15:3513-3526. [PMID: 34160138 PMCID: PMC8637574 DOI: 10.1002/1878-0261.13044] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2021] [Revised: 05/15/2021] [Accepted: 05/28/2021] [Indexed: 02/05/2023] Open
Abstract
Distant metastasis is a major cause of death in patients with colorectal cancer (CRC) but the management of advanced and metastatic CRC still remains problematic due to the distinct molecular alterations during tumor progression. Tumor angiogenesis is a key step in tumor growth, invasion and metastasis. However, the signaling pathways involved in angiogenesis are poorly understood. The results of the present study showed that secretogranin II (SCG2) was significantly downregulated in malignant CRC tissues, and higher expression of SCG2 was correlated with longer disease‐free survival and overall survival of CRC patients. The results of an animal study showed that ectopic expression of SCG2 significantly inhibited CRC tumor growth by disrupting angiogenesis. Furthermore, the inhibition of expression of vascular endothelial growth factor (VEGF) by SCG2 and rescue of VEGF effectively blocked SCG2‐induced inhibition of angiogenesis. Investigations into the underlying mechanism suggested that SCG2 promoted degradation of hypoxia‐inducible factor (HIF)‐1α by interacting with the von Hippel–Lindau tumor suppressor in CRC cells. Blocking of degradation of HIF‐1α effectively attenuated the SCG2‐mediated decrease in expression of VEGF in CRC cells. Collectively, these results demonstrated that treatment with SCG2 effectively inhibited CRC tumor growth by disrupting the activities of HIF‐1α/VEGF, thereby clarifying the anti‐tumor and anti‐angiogenesis roles of SCG2 in CRC, while providing a novel therapeutic target and a potential prognostic marker of disease progression.
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Affiliation(s)
- Chao Fang
- Institute of Digestive Surgery, West China Hospital, Sichuan University, Chengdu, China.,Department of Gastrointestinal Surgery, West China Hospital, West China School of Medicine, Sichuan University, Chengdu, China
| | - Lei Dai
- State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, Sichuan University and Collaborative Innovation Center for Biotherapy, Chengdu, China
| | - Cun Wang
- Institute of Digestive Surgery, West China Hospital, Sichuan University, Chengdu, China.,Department of Gastrointestinal Surgery, West China Hospital, West China School of Medicine, Sichuan University, Chengdu, China
| | - Chuanwen Fan
- Institute of Digestive Surgery, West China Hospital, Sichuan University, Chengdu, China.,Department of Gastrointestinal Surgery, West China Hospital, West China School of Medicine, Sichuan University, Chengdu, China
| | - Yongyang Yu
- Institute of Digestive Surgery, West China Hospital, Sichuan University, Chengdu, China.,Department of Gastrointestinal Surgery, West China Hospital, West China School of Medicine, Sichuan University, Chengdu, China
| | - Lie Yang
- Institute of Digestive Surgery, West China Hospital, Sichuan University, Chengdu, China.,Department of Gastrointestinal Surgery, West China Hospital, West China School of Medicine, Sichuan University, Chengdu, China
| | - Hongxin Deng
- State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, Sichuan University and Collaborative Innovation Center for Biotherapy, Chengdu, China
| | - Zongguang Zhou
- Institute of Digestive Surgery, West China Hospital, Sichuan University, Chengdu, China.,Department of Gastrointestinal Surgery, West China Hospital, West China School of Medicine, Sichuan University, Chengdu, China
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Dall'Olio S, Fontanesi L, Buttazzoni L, Baiocco C, Gallo M, Russo V. Association study between single nucleotide polymorphisms in candidate genes and reproduction traits in Italian Large White sows. Livest Sci 2013. [DOI: 10.1016/j.livsci.2013.05.012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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