Up-regulated expression of type II very low density lipoprotein receptor correlates with cancer metastasis and has a potential link to β-catenin in different cancers
Background: Very low density lipoprotein receptor (VLDLR) has been considered as a multiple function receptor due to binding numerous ligands, causing endocytosis and regulating cellular signaling. Our group previously reported that enhanced activity of type II VLDLR (VLDLR II), one subtype of VLDLR, promotes adenocarcinoma SGC7901 cells proliferation and migration. The aim of this study is to explore the expression levels of VLDLR II in human gastric, breast and lung cancer tissues, and to investigate its relationship with clinical characteristics and beta catenin expression status. Methods: VLDLR II expression was examined using immunohistochemistry (IHC) and Western blot in tumor tissues from 213 gastric, breast and lung cancer patients, tumor adjacent noncancerous tissues by same methods. Correlations between VLDLR II and clinical features, as well as beta-catenin expression status were evaluated by statistical analysis. Results: The immunohistochemical staining of VLDLR II showed statistical difference between tumor tissues and tumor adjacent noncancerous tissues in gastric, breast and lung cancers (P = 0.034, 0.018 and 0.043, respectively). Moreover, using Western, we found higher VLDLR II expression levels were associated with lymph node and distant metastasis in gastric and breast cancer (P < 0.05). Furthermore, highly significant positive correlations were found between VLDLR II and beta-catenin in gastric cancer (r = 0.689; P < 0.001) breast cancer (r = 0.594; P < 0.001). Conclusions: According to the results of the current study, high VLDLR II expression is correlated with lymph node and distant metastasis in gastric and breast cancer patients, the data suggest that VLDLR II may be a clinical marker in cancers, and has a potential link with beta-catenin signaling pathway. This is the first to reveal the closer relationship of VLDLR II with clinical information.
基金:
National Natural Science Foundation of China [30470872, 30300134]; Chinese Ministry of Education [20090142110014]
第一作者单位:[1]Huazhong Univ Sci & Technol, Tongji Med Coll, Dept Biochem & Mol Biol, Wuhan 430030, Peoples R China
通讯作者:
推荐引用方式(GB/T 7714):
He Lei,Lu Yanjun,Wang Peng,et al.Up-regulated expression of type II very low density lipoprotein receptor correlates with cancer metastasis and has a potential link to β-catenin in different cancers[J].BMC CANCER.2010,10:doi:10.1186/1471-2407-10-601.
APA:
He, Lei,Lu, Yanjun,Wang, Peng,Zhang, Jun,Yin, Chuanchang&Qu, Shen.(2010).Up-regulated expression of type II very low density lipoprotein receptor correlates with cancer metastasis and has a potential link to β-catenin in different cancers.BMC CANCER,10,
MLA:
He, Lei,et al."Up-regulated expression of type II very low density lipoprotein receptor correlates with cancer metastasis and has a potential link to β-catenin in different cancers".BMC CANCER 10.(2010)