Expression of Reg IV and SOX9 and their correlation in human gastric cancer
Abstract Background Reg IV is a member of the regenerating gene family and has been demonstrated to be overexpressed in gastric cancer. However, the functional mechanism of Reg IV in gastric cancer is still unclear. Methods Expression of Reg IV and SOX9 were investigated by immunohistochemistry (IHC...
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| Format: | Article |
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BMC
2018-03-01
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| Series: | BMC Cancer |
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| Online Access: | http://link.springer.com/article/10.1186/s12885-018-4285-x |
| _version_ | 1819176224087343104 |
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| author | Na Zhang Dandan Chai Huifen Du Kesheng Li Wenguang Xie Xingwen Li Rong Yang Xiaowen Lian Yang Xu |
| author_facet | Na Zhang Dandan Chai Huifen Du Kesheng Li Wenguang Xie Xingwen Li Rong Yang Xiaowen Lian Yang Xu |
| author_sort | Na Zhang |
| collection | DOAJ |
| description | Abstract Background Reg IV is a member of the regenerating gene family and has been demonstrated to be overexpressed in gastric cancer. However, the functional mechanism of Reg IV in gastric cancer is still unclear. Methods Expression of Reg IV and SOX9 were investigated by immunohistochemistry (IHC) and real-time PCR, and the correlation between the expression of Reg IV and SOX9 was analyzed in gastric cancer tissues. Reg IV expression vectors and a siRNA of Reg IV and SOX9 were transfected into human gastric cancer cells and the protein and mRNA levels of Reg IV and SOX9 were investigated by western blot and real-time PCR. The invasion and migration ability of gastric cancer cells with overexpressed Reg IV and with gene silence of Reg IV and SOX9 were examined by transwell chambers and wound healing assay. Results The Reg IV and SOX9 protein expression levels were both significantly higher in gastric cancer tissues compared with adjacent tissues (p = 0.022, p = 0.003). Reg IV protein expression significantly correlated with tumor invasion depth (p < 0.001), but had no significant correlations with age, clinical stage or lymph node metastasis. SOX9 protein expression also had no significant correlations with age, clinical stage, tumor invasion depth or lymph node metastasis. Reg IV transcript expression demonstrated a significant correlation with invasion depth and lymph node metastasis (p = 0.005, p < 0.001) and no significant correlations with age, clinical stage, tumor tissue differentiation or tumor size. SOX9 transcript expression demonstrated a significant correlation with invasion depth and tumor tissue differentiation (p = 0.044, p = 0.007) and no significant correlations with age, clinical stage or tumor size. The Reg IV expression showed a positive correlation with the SOX9 expression (p < 0.000, p = 0.008). Overexpression of Reg IV could upregulate SOX9 expression and promote invasiveness and migration of tumor cells, and silencing of Reg IV could downregulate SOX9 and inhibit invasiveness and migration of tumor cells in MKN-45 and AGS cells. On the other hand, silencing of SOX9 could upregulate Reg IV protein expression. Conclusions Our study demonstrated that Reg IV positively regulates the expression of SOX9 and is involved in tumor cell invasion and migration in gastric cancer. |
| first_indexed | 2024-12-22T21:07:21Z |
| format | Article |
| id | doaj.art-4c56f0d4dbef4ccea215d9a1a824d81d |
| institution | Directory Open Access Journal |
| issn | 1471-2407 |
| language | English |
| last_indexed | 2024-12-22T21:07:21Z |
| publishDate | 2018-03-01 |
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| series | BMC Cancer |
| spelling | doaj.art-4c56f0d4dbef4ccea215d9a1a824d81d2022-12-21T18:12:38ZengBMCBMC Cancer1471-24072018-03-0118111110.1186/s12885-018-4285-xExpression of Reg IV and SOX9 and their correlation in human gastric cancerNa Zhang0Dandan Chai1Huifen Du2Kesheng Li3Wenguang Xie4Xingwen Li5Rong Yang6Xiaowen Lian7Yang Xu8Department of Medicine Biotechnology, Medicine and Science Research Institute of Gansu ProvinceDepartment of Medicine Biotechnology, Medicine and Science Research Institute of Gansu ProvinceDepartment of Medicine Biotechnology, Medicine and Science Research Institute of Gansu ProvinceDepartment of Medicine Biotechnology, Medicine and Science Research Institute of Gansu ProvinceCollege of Life Sciences, Lanzhou UniversityDepartment of Surgery, Tumor Hospital of Gansu ProvinceDepartment of pathology, Tumor Hospital of Gansu ProvinceDepartment of Medicine Biotechnology, Medicine and Science Research Institute of Gansu ProvinceDepartment of Medicine Biotechnology, Medicine and Science Research Institute of Gansu ProvinceAbstract Background Reg IV is a member of the regenerating gene family and has been demonstrated to be overexpressed in gastric cancer. However, the functional mechanism of Reg IV in gastric cancer is still unclear. Methods Expression of Reg IV and SOX9 were investigated by immunohistochemistry (IHC) and real-time PCR, and the correlation between the expression of Reg IV and SOX9 was analyzed in gastric cancer tissues. Reg IV expression vectors and a siRNA of Reg IV and SOX9 were transfected into human gastric cancer cells and the protein and mRNA levels of Reg IV and SOX9 were investigated by western blot and real-time PCR. The invasion and migration ability of gastric cancer cells with overexpressed Reg IV and with gene silence of Reg IV and SOX9 were examined by transwell chambers and wound healing assay. Results The Reg IV and SOX9 protein expression levels were both significantly higher in gastric cancer tissues compared with adjacent tissues (p = 0.022, p = 0.003). Reg IV protein expression significantly correlated with tumor invasion depth (p < 0.001), but had no significant correlations with age, clinical stage or lymph node metastasis. SOX9 protein expression also had no significant correlations with age, clinical stage, tumor invasion depth or lymph node metastasis. Reg IV transcript expression demonstrated a significant correlation with invasion depth and lymph node metastasis (p = 0.005, p < 0.001) and no significant correlations with age, clinical stage, tumor tissue differentiation or tumor size. SOX9 transcript expression demonstrated a significant correlation with invasion depth and tumor tissue differentiation (p = 0.044, p = 0.007) and no significant correlations with age, clinical stage or tumor size. The Reg IV expression showed a positive correlation with the SOX9 expression (p < 0.000, p = 0.008). Overexpression of Reg IV could upregulate SOX9 expression and promote invasiveness and migration of tumor cells, and silencing of Reg IV could downregulate SOX9 and inhibit invasiveness and migration of tumor cells in MKN-45 and AGS cells. On the other hand, silencing of SOX9 could upregulate Reg IV protein expression. Conclusions Our study demonstrated that Reg IV positively regulates the expression of SOX9 and is involved in tumor cell invasion and migration in gastric cancer.http://link.springer.com/article/10.1186/s12885-018-4285-xReg IVSOX9CorrelationGastric cancer |
| spellingShingle | Na Zhang Dandan Chai Huifen Du Kesheng Li Wenguang Xie Xingwen Li Rong Yang Xiaowen Lian Yang Xu Expression of Reg IV and SOX9 and their correlation in human gastric cancer BMC Cancer Reg IV SOX9 Correlation Gastric cancer |
| title | Expression of Reg IV and SOX9 and their correlation in human gastric cancer |
| title_full | Expression of Reg IV and SOX9 and their correlation in human gastric cancer |
| title_fullStr | Expression of Reg IV and SOX9 and their correlation in human gastric cancer |
| title_full_unstemmed | Expression of Reg IV and SOX9 and their correlation in human gastric cancer |
| title_short | Expression of Reg IV and SOX9 and their correlation in human gastric cancer |
| title_sort | expression of reg iv and sox9 and their correlation in human gastric cancer |
| topic | Reg IV SOX9 Correlation Gastric cancer |
| url | http://link.springer.com/article/10.1186/s12885-018-4285-x |
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