Clinical value and potential mechanisms of COL8A1 upregulation in breast cancer: a comprehensive analysis
Abstract Background The situation faced by breast cancer patients, especially those with triple-negative breast cancer, is still grave. More effective therapeutic targets are needed to optimize the clinical management of breast cancer. Although collagen type VIII alpha 1 chain (COL8A1) has been show...
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doaj-e544a193d92f45a5aa9d5f76b3cb12192020-11-25T03:36:00ZengBMCCancer Cell International1475-28672020-08-0120111810.1186/s12935-020-01465-8Clinical value and potential mechanisms of COL8A1 upregulation in breast cancer: a comprehensive analysisWei Peng0Jian-Di Li1Jing-Jing Zeng2Xiao-Ping Zou3Deng Tang4Wei Tang5Min-Hua Rong6Ying Li7Wen-Bin Dai8Zhong-Qing Tang9Zhen-Bo Feng10Gang Chen11Department of Medical Oncology, The First Affiliated Hospital of Guangxi Medical UniversityDepartment of Medical Oncology, The First Affiliated Hospital of Guangxi Medical UniversityDepartment of Pathology, The First Affiliated Hospital of Guangxi Medical UniversityDepartment of Pathology, The First Affiliated Hospital of Guangxi Medical UniversityDepartment of Pathology, The First Affiliated Hospital of Guangxi Medical UniversityDepartment of Breast Surgery, Guangxi Medical University Cancer HospitalDepartment of Research, Guangxi Medical University Cancer HospitalDepartment of Pathology, Qinzhou First People’s HospitalDepartment of Pathology, Liuzhou People’s HospitalDepartment of Pathology, Wuzhou Workers’ Hospital, The Seventh Affiliated Hospital of Guangxi Medical UniversityDepartment of Pathology, The First Affiliated Hospital of Guangxi Medical UniversityDepartment of Pathology, The First Affiliated Hospital of Guangxi Medical UniversityAbstract Background The situation faced by breast cancer patients, especially those with triple-negative breast cancer, is still grave. More effective therapeutic targets are needed to optimize the clinical management of breast cancer. Although collagen type VIII alpha 1 chain (COL8A1) has been shown to be downregulated in BRIP1-knockdown breast cancer cells, its clinical role in breast cancer remains unknown. Methods Gene microarrays and mRNA sequencing data were downloaded and integrated into larger matrices based on various platforms. Therefore, this is a multi-centered study, which contains 5048 breast cancer patients and 1161 controls. COL8A1 mRNA expression in breast cancer was compared between molecular subtypes. In-house immunohistochemistry staining was used to evaluate the protein expression of COL8A1 in breast cancer. A diagnostic test was performed to assess its clinical value. Furthermore, based on differentially expressed genes (DEGs) and co-expressed genes (CEGs) positively related to COL8A1, functional enrichment analyses were performed to explore the biological function and potential molecular mechanisms of COL8A1 underlying breast cancer. Results COL8A1 expression was higher in breast cancer patients than in control samples (standardized mean difference = 0.79; 95% confidence interval [CI] 0.55–1.03). Elevated expression was detected in various molecular subtypes of breast cancer. An area under a summary receiver operating characteristic curve of 0.80 (95% CI 0.76–0.83) with sensitivity of 0.77 (95% CI 0.69–0.83) and specificity of 0.70 (95% CI 0.61–0.78) showed moderate capacity of COL8A1 in distinguishing breast cancer patients from control samples. Worse overall survival was found in the higher than in the lower COL8A1 expression groups. Intersected DEGs and CEGs positively related to COL8A1 were significantly clustered in the proteoglycans in cancer and ECM-receptor interaction pathways. Conclusions Elevated COL8A1 may promote the migration of breast cancer by mediating the ECM-receptor interaction and synergistically interplaying with DEGs and its positively related CEGs independently of molecular subtypes. Several genes clustered in the proteoglycans in cancer pathway are potential targets for developing effective agents for triple-negative breast cancer.http://link.springer.com/article/10.1186/s12935-020-01465-8COL8A1Breast cancerImmunohistochemistry stainingMechanism |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Wei Peng Jian-Di Li Jing-Jing Zeng Xiao-Ping Zou Deng Tang Wei Tang Min-Hua Rong Ying Li Wen-Bin Dai Zhong-Qing Tang Zhen-Bo Feng Gang Chen |
spellingShingle |
Wei Peng Jian-Di Li Jing-Jing Zeng Xiao-Ping Zou Deng Tang Wei Tang Min-Hua Rong Ying Li Wen-Bin Dai Zhong-Qing Tang Zhen-Bo Feng Gang Chen Clinical value and potential mechanisms of COL8A1 upregulation in breast cancer: a comprehensive analysis Cancer Cell International COL8A1 Breast cancer Immunohistochemistry staining Mechanism |
author_facet |
Wei Peng Jian-Di Li Jing-Jing Zeng Xiao-Ping Zou Deng Tang Wei Tang Min-Hua Rong Ying Li Wen-Bin Dai Zhong-Qing Tang Zhen-Bo Feng Gang Chen |
author_sort |
Wei Peng |
title |
Clinical value and potential mechanisms of COL8A1 upregulation in breast cancer: a comprehensive analysis |
title_short |
Clinical value and potential mechanisms of COL8A1 upregulation in breast cancer: a comprehensive analysis |
title_full |
Clinical value and potential mechanisms of COL8A1 upregulation in breast cancer: a comprehensive analysis |
title_fullStr |
Clinical value and potential mechanisms of COL8A1 upregulation in breast cancer: a comprehensive analysis |
title_full_unstemmed |
Clinical value and potential mechanisms of COL8A1 upregulation in breast cancer: a comprehensive analysis |
title_sort |
clinical value and potential mechanisms of col8a1 upregulation in breast cancer: a comprehensive analysis |
publisher |
BMC |
series |
Cancer Cell International |
issn |
1475-2867 |
publishDate |
2020-08-01 |
description |
Abstract Background The situation faced by breast cancer patients, especially those with triple-negative breast cancer, is still grave. More effective therapeutic targets are needed to optimize the clinical management of breast cancer. Although collagen type VIII alpha 1 chain (COL8A1) has been shown to be downregulated in BRIP1-knockdown breast cancer cells, its clinical role in breast cancer remains unknown. Methods Gene microarrays and mRNA sequencing data were downloaded and integrated into larger matrices based on various platforms. Therefore, this is a multi-centered study, which contains 5048 breast cancer patients and 1161 controls. COL8A1 mRNA expression in breast cancer was compared between molecular subtypes. In-house immunohistochemistry staining was used to evaluate the protein expression of COL8A1 in breast cancer. A diagnostic test was performed to assess its clinical value. Furthermore, based on differentially expressed genes (DEGs) and co-expressed genes (CEGs) positively related to COL8A1, functional enrichment analyses were performed to explore the biological function and potential molecular mechanisms of COL8A1 underlying breast cancer. Results COL8A1 expression was higher in breast cancer patients than in control samples (standardized mean difference = 0.79; 95% confidence interval [CI] 0.55–1.03). Elevated expression was detected in various molecular subtypes of breast cancer. An area under a summary receiver operating characteristic curve of 0.80 (95% CI 0.76–0.83) with sensitivity of 0.77 (95% CI 0.69–0.83) and specificity of 0.70 (95% CI 0.61–0.78) showed moderate capacity of COL8A1 in distinguishing breast cancer patients from control samples. Worse overall survival was found in the higher than in the lower COL8A1 expression groups. Intersected DEGs and CEGs positively related to COL8A1 were significantly clustered in the proteoglycans in cancer and ECM-receptor interaction pathways. Conclusions Elevated COL8A1 may promote the migration of breast cancer by mediating the ECM-receptor interaction and synergistically interplaying with DEGs and its positively related CEGs independently of molecular subtypes. Several genes clustered in the proteoglycans in cancer pathway are potential targets for developing effective agents for triple-negative breast cancer. |
topic |
COL8A1 Breast cancer Immunohistochemistry staining Mechanism |
url |
http://link.springer.com/article/10.1186/s12935-020-01465-8 |
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