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Chen P, Liu C, Li P, Wang Q, Gao X, Wu H, Huang J. High RhCG expression predicts poor survival and promotes migration and proliferation of gastric cancer via keeping intracellular alkaline. Exp Cell Res 2020; 386:111740. [PMID: 31756312 DOI: 10.1016/j.yexcr.2019.111740] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2019] [Revised: 11/15/2019] [Accepted: 11/18/2019] [Indexed: 11/25/2022]
Abstract
Advanced gastric cancer (GC) is aggressive with a high mortality rate. Rhesus family, C glycoprotein (RhCG) participates in tumor progression in many cancers, however its function in GC is still unknown. Here, we showed that RhCG was overexpressed in GC tissues at mRNA (P = 0.036) and protein levels (P < 0.05) compared with normal tissues. High RhCG level was correlated with poor differentiation (P = 0.037), TNM stage (P < 0.001), high HER-2 level (P = 0.018) and worse prognosis (P < 0.001). Cox proportional hazard model indicated that RhCG level was an independent prognostic biomarker. RhCG knockdown significantly decreased pHi and impeded tumor cellular proliferation, migration and invasion and repressed β-catenin and c-myc expression in GC cells. Moreover, GC cells with high RhCG level had reduced oxaliplatin efficacy suggesting a role for RhCG as a therapeutic target for GC. Our findings revealed a function of RhCG in cancer pathogenesis, invasion and metastasis in human GC. We suggest that RhCG act may as a novel prognostic indicator and a therapeutic target for gastric adenocarcinoma.
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Affiliation(s)
- Pei Chen
- Department of Clinical Biobank, Affiliated Hospital of Nantong University, Nantong, Jiangsu, 226000, China; Department of Oncology, Medical School of Nantong University, Nantong, Jiangsu, 226000, China
| | - Can Liu
- Department of Oncology, Medical School of Nantong University, Nantong, Jiangsu, 226000, China
| | - Peng Li
- Department of General Surgery, Affiliated Hospital of Nantong University, Nantong, Jiangsu, 226000, China
| | - Qingqing Wang
- Department of General Surgery, Affiliated Hospital of Nantong University, Nantong, Jiangsu, 226000, China
| | - Xiaodong Gao
- Department of General Surgery, Medical School of Nantong University, Nantong, Jiangsu, 226000, China
| | - Han Wu
- Department of General Surgery, Affiliated Hospital of Nantong University, Nantong, Jiangsu, 226000, China.
| | - JianFei Huang
- Department of Clinical Biobank, Affiliated Hospital of Nantong University, Nantong, Jiangsu, 226000, China; Institute of Oncology, Affiliated Hospital of Nantong University, Nantong 226001, Jiangsu, China.
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Kong D, Zhang D, Chu X, Wang J. Schizandrin A enhances chemosensitivity of colon carcinoma cells to 5-fluorouracil through up-regulation of miR-195. Biomed Pharmacother 2018; 99:176-183. [PMID: 29331856 DOI: 10.1016/j.biopha.2018.01.035] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2017] [Revised: 01/03/2018] [Accepted: 01/03/2018] [Indexed: 12/18/2022] Open
Abstract
Nowadays 5-fluorouracil (5-FU)-based adjuvant chemotherapy is widely used for treating colon carcinoma. However, 5-FU resistance in the treatment of colon carcinoma has become more common and thereby new therapeutic strategies and new adjuvant drugs still need to be explored. Two 5-FU-resistant colon cancer cell lines, HCT116 and SW480, were used to investigate the effects of Schizandrin A (SchA), 5-FU, or their combination on cell viability and apoptosis. Besides, the role of miR-195 was studied to further clarify the specific function of SchA. CCK-8 assay and flow cytometry analysis were conducted to determine cell viability and apoptosis, respectively. miR-195 expression was determined by quantitative real-time PCR. Cell apoptosis-related proteins and factors of PI3K/AKT and NF-κB pathways were analyzed by Western blot. Cell viability assay showed that SchA treatment at non-toxic dosages caused a marked enhancement of 5-FU-induced cytotoxicity. Moreover, we explored that miR-195 was up-regulated by SchA; and overexpression of miR-195 reduced cell viability and sensitized 5-FU-resistant HCT116 and SW480 cells to 5-FU. The promoting effect of SchA on 5-FU susceptibility can be partly abolished by miR-195 knockdown. Thus it was speculated that SchA might enhance cell chemosensitivity to 5-FU by up-regulating miR-195. Finally, we found that PI3K/AKT and NF-κB pathways were inhibited by high expression of miR-195 reduced by SchA. Our results suggested that SchA sensitized 5-FU-resistant colon carcinoma cells to 5-FU by up-regulating miR-195. SchA combined with 5-FU could be a promising strategy for the adjuvant chemotherapy of colon cancer.
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Affiliation(s)
- Dongfang Kong
- Department of Gastrointestinal Surgery, Jining No. 1 People'S Hospital, Jining, 272000, China
| | - Deyong Zhang
- Department of Gastrointestinal Surgery, Jining No. 1 People'S Hospital, Jining, 272000, China
| | - Xianqun Chu
- Department of Gastrointestinal Surgery, Jining No. 1 People'S Hospital, Jining, 272000, China
| | - Jing Wang
- Department of Gastrointestinal Surgery, Jining No. 1 People'S Hospital, Jining, 272000, China.
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