P2X7R as an independent prognostic indicator in gastric cancer

Author:

Calik Ilknur,Calik Muhammet,Sarikaya BurcuORCID,Ozercan Ibrahim Hanifi,Arslan Ramazan,Artas Gokhan,Dagli Adile Ferda

Abstract

Gastric cancer is one of the foremost causes of cancer related death around the world. The P2X7 receptor (P2X7R), a member of the P2X receptor subfamily of P2 receptors, is a unique molecule that has been shown to affect tumor growth and progression as well as various inflammatory processes, including proliferation of T lymphocytes, release of cytokines, and production of free oxygen radicals. P2X7R has been established as a prognostic parameter in some cancers and, recently, it has been investigated in the development of new targeted therapies. In the present study, we aimed to investigate the prognostic value of P2X7R expression in GC. The expression profile of P2X7R was evaluated immunohistochemically in 156 paraffin-embedded human gastric cancer specimens. P2X7R expression was higher in patients with lymph node metastasis than in those without (p < 0.001). P2X7R overexpression was closely related with tumor-infiltrating lymphocytes [TILs] (p = 0.001), vascular invasion (p = 0.006), depth of invasion (p < 0.001), distant metastasis (p < 0.001), and advanced TNM stage (p < 0.001). Moreover, univariate (HR 3.98; 95% CI 1.89–11.82; p < 0.001) and multivariate (HR 2.24; 95% CI 3.53–12.50; p < 0.001) Cox regression analysis showed that upregulated P2X7R expression clearly correlated with worsened overall survival. In summary, our data revealed that P2X7R may serve as a reliable prognostic parameter and promising therapeutic target for gastric cancer.

Publisher

Association of Basic Medical Sciences of FBIH

Subject

General Medicine

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