Positive prognostic value of HER2-HER3 co-expression and p-mTOR in gastric cancer patients

Autor: Guo-dong Cao, Ke Chen, Bo Chen, Mao-ming Xiong
Jazyk: angličtina
Rok vydání: 2017
Předmět:
Zdroj: BMC Cancer, Vol 17, Iss 1, Pp 1-16 (2017)
Druh dokumentu: article
ISSN: 1471-2407
DOI: 10.1186/s12885-017-3851-y
Popis: Abstract Background The HER2-HER3 heterodimer significantly decreases survival in breast cancer patients. However, the prognostic value of HER2-HER3 overexpression remains unknown in gastric cancer (GC). Methods The expression levels of HER2, HER3, Akt, p-Akt, mTOR and p-mTOR were examined in specimens from 120 GC patients by immunohistochemistry and quantitative reverse transcription-PCR. The associations of HER proteins, PI3K/Akt/mTOR pathway-related proteins, clinicopathological features of GC, and overall survival (OS) were assessed. To comprehensively evaluate the prognostic values of pathway-related proteins, meta-analyses were conducted with STATA 11.0. Results HER2 overexpression was significantly associated with HER3 levels (P = 0.02). HER3 was highly expressed in gastric cancer tissues. High HER2 and HER3 levels were associated with elevated p-Akt and p-mTOR amounts (P
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