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Overexpression of PrPc, combined with MGr1‐Ag/37LRP, is predictive of poor prognosis in gastric cancer
Author(s) -
Zhou Lin,
Shang Yulong,
Liu Changhao,
Li Jinge,
Hu Hao,
Liang Cong,
Han Yanan,
Zhang Wei,
Liang Jie,
Wu Kaichun
Publication year - 2014
Publication title -
international journal of cancer
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.475
H-Index - 234
eISSN - 1097-0215
pISSN - 0020-7136
DOI - 10.1002/ijc.28883
Subject(s) - immunohistochemistry , tissue microarray , cancer , downregulation and upregulation , lymph node , lymph node metastasis , metastasis , medicine , protein expression , pathology , multivariate analysis , oncology , cancer research , biology , gene , biochemistry
Prion protein (PrPc) has been previously reported to be involved in gastric cancer (GC) development and progression. However, the association between expression of PrPc and GC prognosis is yet poorly characterized. In the present study, the expressions of PrPc and MGr1‐Ag/37LRP, a protein interacting with PrPc, were detected using the tissue microarray technique and immunohistochemical method to compare clinicopathological parameters of 238 GC patients. We found that the expressions of PrPc and MGr1‐Ag/37LRP were upregulated in GC lesions compared with their expressions in adjacent noncancerous tissues ( p < 0.01). High expression of PrPc was detected in 37.39% (89/238) of GC patients and positively correlated with the expression of MGr1‐Ag/37LRP ( r = 0.532, p < 0.001). PrPc expression was associated with a number of clinicopathological parameters including depth of invasion and lymph node metastasis of the tumor ( p < 0.001). High expression of PrPc brought a poorer prognosis than low PrPc expression. Moreover, GC patients with high level of PrPc and high level of MGr1‐Ag/37LRP had the poorest prognosis. Multivariate survival analysis suggested that, along with other parameters, combined expression of PrPc and MGr1‐Ag/37LRP was independent prognostic factors for GC patients. These data indicates that overexpression of PrPc, combined with MGr1‐Ag/37LRP, is predictive of poor prognosis in GC and thereby could be used to guide the clinical decision.