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Overexpression of connective tissue growth factor WISP-1 in Chinese primary rectal cancer patients

World Journal of Gastroenterology 2007年第28期13卷 3878-3882页

作者： Chao Tian Zong-Guang Zhou Wen-Jian Meng Xiao-Feng Sun Yong-Yang Yu Li Li Hong-Zhi Luo, Lie Yang Bin Zhou Jun Gu Department of Gastrointestinal Surgery and Division of Digestive Surgery and Organ-Microcirculation West China Hospital Sichuan University Chengdu 610041 Sichuan Province China Department of Oncology Institute of Biomedicine and Surgery University of Linkoping Linkoping Sweden Department of Gastrointestinal Surgery West China Hospital Sichuan University Chengdu 610041 Sichuan Province China

AIM： To clarify the expression change of wnt-induced secreted protein-1 （WISP-l） in human rectal cancer and to determine whether it is correlated with invasion and metastasis of human rectal cancer.METHODS： Eighty-six paired samples of rectal cancer and surgically resected distant normal rectal tissue were collected and allocated into cancer group and control group respectively. WISP-1 mRNA was detected by relative quantitative real-time RT-PCR and WISP-1 protein was examined by immunohistochemical staining.RESULTS： WISP-1 gene overexpression was found in 65% （56/86） primary rectal cancers, 2-30 times that of the level in normal matched rectal tissues （P = 0.001）. The mRNA expression level was correlated with Duke＇s staging, histological differentiation grade and lymph node status. The WISP-1 protein expression was in accordance with mRNA expression level. The positive degree of immunohistochemical staining in the cancer group （1.40±0.35） was different from that in control group （1.04± 0.08, P 〈 0.001）. Moreover, in cancer group the positive staining degree in high-level mRNA cancers （1.46 ±0.37, n = 56） was higher than that in low-level mRNA （1.28 ± 0.28, n = 30, P = 0.018）.CONCLUSION： Aberrant levels of WISP-1 expression may play a role in rectal tumorigenesis. WISP-1 may be used as a specific clinical diagnosis and prognosis marker in rectal cancer.

关键词： wnt-induced secreted protein-1 Rectal cancer Real time RT-PCR Immunohistochemicy

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