Comparative proteomic profiling of human bile reveals SSP411 as a novel biomarker of cholangiocarcinoma.
BACKGROUND: Cholangiocarcinoma (CC) is an intractable cancer, arising from biliary epithelial cells, which has a poor prognosis and is increasing in incidence. Early diagnosis of CC is essential as surgical resection remains the only effective therapy. The purpose of this study was to identify impro...
| Main Authors: | , , , , , , , , , , , , |
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| Format: | Article |
| Language: | English |
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Public Library of Science (PLoS)
2012-01-01
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| Series: | PLoS ONE |
| Online Access: | http://europepmc.org/articles/PMC3485295?pdf=render |
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| author | Jian Shen Weizhi Wang Jindao Wu Bing Feng Wen Chen Meng Wang Jincao Tang Fuqiang Wang Feng Cheng Liyong Pu Qiyun Tang Xuehao Wang Xiangcheng Li |
| author_facet | Jian Shen Weizhi Wang Jindao Wu Bing Feng Wen Chen Meng Wang Jincao Tang Fuqiang Wang Feng Cheng Liyong Pu Qiyun Tang Xuehao Wang Xiangcheng Li |
| author_sort | Jian Shen |
| collection | DOAJ |
| description | BACKGROUND: Cholangiocarcinoma (CC) is an intractable cancer, arising from biliary epithelial cells, which has a poor prognosis and is increasing in incidence. Early diagnosis of CC is essential as surgical resection remains the only effective therapy. The purpose of this study was to identify improved biomarkers to facilitate early diagnosis and prognostication in CC. METHODS: A comparative expression profile of human bile samples from patients with cholangitis and CC was constructed using a classic 2D/MS/MS strategy and the expression of selected proteins was confirmed by Western blotting. Immunohistochemistry was performed to determine the expression levels of selected candidate biomarkers in CC and matched normal tissues. Finally, spermatogenesis associated 20 (SSP411; also named SPATA20) was quantified in serum samples using an ELISA. RESULTS: We identified 97 differentially expressed protein spots, corresponding to 49 different genes, of which 38 were upregulated in bile from CC patients. Western blotting confirmed that phosphoglycerate mutase 1 (brain) (PGAM-1), protein disulfide isomerase family A, member 3 (PDIA3), heat shock 60 kDa protein 1 (chaperonin) (HSPD1) and SSP411 were significantly upregulated in individual bile samples from CC patients. Immunohistochemistry demonstrated these proteins were also overexpressed in CC, relative to normal tissues. SSP411 displayed value as a potential serum diagnostic biomarker for CC, with a sensitivity of 90.0% and specificity of 83.3% at a cutoff value of 0.63. CONCLUSIONS: We successfully constructed a proteomic profile of CC bile proteins, providing a valuable pool novel of candidate biomarkers. SSP411 has potential as a biomarker for the diagnosis of CC. |
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| issn | 1932-6203 |
| language | English |
| last_indexed | 2024-04-13T04:02:41Z |
| publishDate | 2012-01-01 |
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| series | PLoS ONE |
| spelling | doaj.art-d9b4859ab9094d52a377efdd4e0972622022-12-22T03:03:25ZengPublic Library of Science (PLoS)PLoS ONE1932-62032012-01-01710e4747610.1371/journal.pone.0047476Comparative proteomic profiling of human bile reveals SSP411 as a novel biomarker of cholangiocarcinoma.Jian ShenWeizhi WangJindao WuBing FengWen ChenMeng WangJincao TangFuqiang WangFeng ChengLiyong PuQiyun TangXuehao WangXiangcheng LiBACKGROUND: Cholangiocarcinoma (CC) is an intractable cancer, arising from biliary epithelial cells, which has a poor prognosis and is increasing in incidence. Early diagnosis of CC is essential as surgical resection remains the only effective therapy. The purpose of this study was to identify improved biomarkers to facilitate early diagnosis and prognostication in CC. METHODS: A comparative expression profile of human bile samples from patients with cholangitis and CC was constructed using a classic 2D/MS/MS strategy and the expression of selected proteins was confirmed by Western blotting. Immunohistochemistry was performed to determine the expression levels of selected candidate biomarkers in CC and matched normal tissues. Finally, spermatogenesis associated 20 (SSP411; also named SPATA20) was quantified in serum samples using an ELISA. RESULTS: We identified 97 differentially expressed protein spots, corresponding to 49 different genes, of which 38 were upregulated in bile from CC patients. Western blotting confirmed that phosphoglycerate mutase 1 (brain) (PGAM-1), protein disulfide isomerase family A, member 3 (PDIA3), heat shock 60 kDa protein 1 (chaperonin) (HSPD1) and SSP411 were significantly upregulated in individual bile samples from CC patients. Immunohistochemistry demonstrated these proteins were also overexpressed in CC, relative to normal tissues. SSP411 displayed value as a potential serum diagnostic biomarker for CC, with a sensitivity of 90.0% and specificity of 83.3% at a cutoff value of 0.63. CONCLUSIONS: We successfully constructed a proteomic profile of CC bile proteins, providing a valuable pool novel of candidate biomarkers. SSP411 has potential as a biomarker for the diagnosis of CC.http://europepmc.org/articles/PMC3485295?pdf=render |
| spellingShingle | Jian Shen Weizhi Wang Jindao Wu Bing Feng Wen Chen Meng Wang Jincao Tang Fuqiang Wang Feng Cheng Liyong Pu Qiyun Tang Xuehao Wang Xiangcheng Li Comparative proteomic profiling of human bile reveals SSP411 as a novel biomarker of cholangiocarcinoma. PLoS ONE |
| title | Comparative proteomic profiling of human bile reveals SSP411 as a novel biomarker of cholangiocarcinoma. |
| title_full | Comparative proteomic profiling of human bile reveals SSP411 as a novel biomarker of cholangiocarcinoma. |
| title_fullStr | Comparative proteomic profiling of human bile reveals SSP411 as a novel biomarker of cholangiocarcinoma. |
| title_full_unstemmed | Comparative proteomic profiling of human bile reveals SSP411 as a novel biomarker of cholangiocarcinoma. |
| title_short | Comparative proteomic profiling of human bile reveals SSP411 as a novel biomarker of cholangiocarcinoma. |
| title_sort | comparative proteomic profiling of human bile reveals ssp411 as a novel biomarker of cholangiocarcinoma |
| url | http://europepmc.org/articles/PMC3485295?pdf=render |
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