Thirty years of Epstein-Barr virus-associated gastric carcinoma
- PMID: 31836926
- DOI: 10.1007/s00428-019-02724-4
Thirty years of Epstein-Barr virus-associated gastric carcinoma
Abstract
Thirty years have passed since a possible association of Epstein-Barr virus (EBV) with gastric carcinoma was reported. We now know EBV-associated gastric carcinoma to be a specific subtype of gastric carcinoma. Global epigenetic methylation and counteraction of the antitumour microenvironment are two major characteristics of this subtype of gastric carcinoma. Recent development of therapeutic modalities for gastric carcinoma, such as endoscopic mucosal dissection and immune checkpoint inhibitor therapy, has made the presence of EBV infection a biomarker for the treatment of gastric carcinoma. This review presents a portrait of EBV-associated gastric carcinoma from initiation to maturity that we define as the 'gastritis-infection-cancer sequence', followed by its molecular abnormalities and interactions with immune checkpoint molecules and the microenvironment. EBV non-coding RNAs (microRNA and circular RNA) and exosomes derived from EBV-infected cells that were previously behind the scenes are now recognized for their roles in EBV-associated gastric carcinoma. The virus utilizes cellular machinery skilfully to control infected cells and their microenvironment. We should thus strive to understand virus-host interactions more fully in the following years to overcome this virus-driven subtype of gastric carcinoma.
Keywords: DNA methylation; Epstein-Barr virus; Exosome; Gastric carcinoma; Gastritis; Immune evasion; Infection; MicroRNA.
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- 26253021/Grants-in-Aid for Scientific Research (KAKENHI) from the Japan Society for the Promotion of Science
- 26860232/Grants-in-Aid for Scientific Research (KAKENHI) from the Japan Society for the Promotion of Science
- 16K19074/Grants-in-Aid for Scientific Research (KAKENHI) from the Japan Society for the Promotion of Science
- 16gm0510010h0005/the Core Research for Evolutionary Science and Technology program from the Japan Science and Technology Agency
- 16m0510010h005/the Core Research for Evolutionary Sciene and Technology Program from Japan Science and Technology Agency
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