Prevalence of JC virus in Chinese patients with colorectal cancer.
BACKGROUND: JCV is a DNA polyomavirus very well adapted to humans. Although JCV DNA has been detected in colorectal cancers (CRC), the association between JCV and CRC remains controversial. In China, the presence of JCV infection in CRC patients has not been reported. Here, we investigated JCV infec...
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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/PMC3350510?pdf=render |
| _version_ | 1818449743961915392 |
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| author | Xiaozhou Mou Ling Chen Fanlong Liu Jian Lin Pingping Diao Haohao Wang Yifei Li Jianjiang Lin Lisong Teng Charlie Xiang |
| author_facet | Xiaozhou Mou Ling Chen Fanlong Liu Jian Lin Pingping Diao Haohao Wang Yifei Li Jianjiang Lin Lisong Teng Charlie Xiang |
| author_sort | Xiaozhou Mou |
| collection | DOAJ |
| description | BACKGROUND: JCV is a DNA polyomavirus very well adapted to humans. Although JCV DNA has been detected in colorectal cancers (CRC), the association between JCV and CRC remains controversial. In China, the presence of JCV infection in CRC patients has not been reported. Here, we investigated JCV infection and viral DNA load in Chinese CRC patients and to determine whether the JCV DNA in peripheral blood (PB) can be used as a diagnostic marker for JCV-related CRC. METHODOLOGY/PRINCIPAL FINDINGS: Tumor tissues, non-cancerous tumor-adjacent tissues and PB samples were collected from 137 CRC patients. In addition, 80 normal colorectal tissue samples from patients without CRC and PB samples from 100 healthy volunteers were also harvested as controls. JCV DNA was detected by nested PCR and glass slide-based dot blotting. Viral DNA load of positive samples were determined by quantitative real-time PCR. JCV DNA was detected in 40.9% (56/137) of CRC tissues at a viral load of 49.1 to 10.3×10(4) copies/µg DNA. Thirty-four (24.5%) non-cancerous colorectal tissues (192.9 to 4.4×10(3) copies/µg DNA) and 25 (18.2%) PB samples (81.3 to 4.9×10(3) copies/µg DNA) from CRC patients were positive for JCV. Tumor tissues had higher levels of JCV than non-cancerous tissues (P = 0.003) or PB samples (P<0.001). No correlation between the presence of JCV and demographic or medical characteristics was observed. The JCV prevalence in PB samples was significantly associated with the JCV status in tissue samples (P<0.001). Eleven (13.8%) normal colorectal tissues and seven (7.0%) PB samples from healthy donors were positive for JCV. CONCLUSIONS/SIGNIFICANCE: JCV infection is frequently present in colorectal tumor tissues of CRC patients. Although the association between JCV presence in PB samples and JCV status in tissue samples was identified in this study, whether PB JCV detection can serve as a marker for JCV status of CRC requires further study. |
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| institution | Directory Open Access Journal |
| issn | 1932-6203 |
| language | English |
| last_indexed | 2024-12-14T20:40:16Z |
| publishDate | 2012-01-01 |
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| spelling | doaj.art-fbd7b8585491487aae61c6b5152e98bc2022-12-21T22:48:18ZengPublic Library of Science (PLoS)PLoS ONE1932-62032012-01-0175e3590010.1371/journal.pone.0035900Prevalence of JC virus in Chinese patients with colorectal cancer.Xiaozhou MouLing ChenFanlong LiuJian LinPingping DiaoHaohao WangYifei LiJianjiang LinLisong TengCharlie XiangBACKGROUND: JCV is a DNA polyomavirus very well adapted to humans. Although JCV DNA has been detected in colorectal cancers (CRC), the association between JCV and CRC remains controversial. In China, the presence of JCV infection in CRC patients has not been reported. Here, we investigated JCV infection and viral DNA load in Chinese CRC patients and to determine whether the JCV DNA in peripheral blood (PB) can be used as a diagnostic marker for JCV-related CRC. METHODOLOGY/PRINCIPAL FINDINGS: Tumor tissues, non-cancerous tumor-adjacent tissues and PB samples were collected from 137 CRC patients. In addition, 80 normal colorectal tissue samples from patients without CRC and PB samples from 100 healthy volunteers were also harvested as controls. JCV DNA was detected by nested PCR and glass slide-based dot blotting. Viral DNA load of positive samples were determined by quantitative real-time PCR. JCV DNA was detected in 40.9% (56/137) of CRC tissues at a viral load of 49.1 to 10.3×10(4) copies/µg DNA. Thirty-four (24.5%) non-cancerous colorectal tissues (192.9 to 4.4×10(3) copies/µg DNA) and 25 (18.2%) PB samples (81.3 to 4.9×10(3) copies/µg DNA) from CRC patients were positive for JCV. Tumor tissues had higher levels of JCV than non-cancerous tissues (P = 0.003) or PB samples (P<0.001). No correlation between the presence of JCV and demographic or medical characteristics was observed. The JCV prevalence in PB samples was significantly associated with the JCV status in tissue samples (P<0.001). Eleven (13.8%) normal colorectal tissues and seven (7.0%) PB samples from healthy donors were positive for JCV. CONCLUSIONS/SIGNIFICANCE: JCV infection is frequently present in colorectal tumor tissues of CRC patients. Although the association between JCV presence in PB samples and JCV status in tissue samples was identified in this study, whether PB JCV detection can serve as a marker for JCV status of CRC requires further study.http://europepmc.org/articles/PMC3350510?pdf=render |
| spellingShingle | Xiaozhou Mou Ling Chen Fanlong Liu Jian Lin Pingping Diao Haohao Wang Yifei Li Jianjiang Lin Lisong Teng Charlie Xiang Prevalence of JC virus in Chinese patients with colorectal cancer. PLoS ONE |
| title | Prevalence of JC virus in Chinese patients with colorectal cancer. |
| title_full | Prevalence of JC virus in Chinese patients with colorectal cancer. |
| title_fullStr | Prevalence of JC virus in Chinese patients with colorectal cancer. |
| title_full_unstemmed | Prevalence of JC virus in Chinese patients with colorectal cancer. |
| title_short | Prevalence of JC virus in Chinese patients with colorectal cancer. |
| title_sort | prevalence of jc virus in chinese patients with colorectal cancer |
| url | http://europepmc.org/articles/PMC3350510?pdf=render |
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