Metabolomic Analysis of Gastric Cancer Progression within the Correa's Cascade Using Ultraperformance Liquid Chromatography-Mass Spectrometry

Autors de IIS La Fe

• Julia Kuligowski

  Autor

• Lourdes Gombau Suarez

  Autor

• Guillermo Quintas Soriano

  Autor

Autors aliens a IIS La Fe

• Sanjuan-Herráez D
• Vázquez-Sánchez MA
• Brunet-Vega A
• Pericay C
• Ramírez-Lázaro MJ
• Lario S
• Junquera F
• Calvet X

Grups d'Investigació

• Perinatología

  

  Leader

  Máximo Vento Torres

Abstract

Gastric cancer (GC) is among the most common cancers worldwide. Gastric carcinogenesis is a multistep and multifactorial process beginning with chronic gastritis induced by Helicobacter pylon (H. pylori) infection. This process is often described via a sequence of events known as Correas's cascade, a stepwise progression from non active gastritis, chronic active gastritis, precursor lesions of gastric cancer (atrophy, intestinal metaplasia, and dysplasia), and finally adenocarcinoma. Our aim was to identify a plasma metabolic pattern characteristic of GC through disease progression within the Correa's cascade. This study involved the analysis of plasma samples collected from 143 patients classified in four groups: patients with nonactive gastritis and no H. pylon infection, H. pylori infected patients with chronic active gastritis, infected or noninfected patients with precursor lesions of gastric cancer, and GC. Independent partial least-squares discriminant binary models of UPLC-ESI(+)-TOFMS metabolic profiles, implemented in a decision-directed acyclic graph, allowed the identification of tryptophan and kynurenine as discriminant metabolites that could be attributed to indoleamine-2,3-dioxygenase upregulation in cancer patients leading to tryptophan depletion and kynurenine metabolites generation. Furthermore, phenylacetylglutamine was also classified as a discriminant metabolite. Our data suggest the use of tryptophan, kynurenine, and phenylacetylglutamine as potential GC biomarkers.

Keywords

• gastric cancer; metabolomics; Helicobacter pylori; tryptophan; phenylacetylglutamine; indoleamine-2,3-dioxygenase; UPLC-MS