Understanding microbe induced stomach cancer the key to a workable strategy fo...
Understanding microbe induced stomach cancer the key to a workable strategy for worldwide prevention
Stomach cancer is the 4th most common cancer and 2nd leading cause of cancer-related death worldwide. The aim of this proposal is to deepen the understanding of mechanisms involved in microbe-induced gastric carcinogenesis, which...
Stomach cancer is the 4th most common cancer and 2nd leading cause of cancer-related death worldwide. The aim of this proposal is to deepen the understanding of mechanisms involved in microbe-induced gastric carcinogenesis, which will facilitate risk stratification for identification of high-risk groups and may offer new opportunities for pharmacological and probiotic prevention. We hypothesize that novel H. pylori genotypic variation can predict carcinogenicity. The cancer-causing H. pylori strains may no longer be present at the time of cancer diagnosis, displaced by a changed microenvironment and invading microorganisms. We further hypothesize that the composition of invading microorganisms determines the risk of stomach cancer. To test these hypotheses, we will perform a case-control study nested within a historic cohort of patients with gastric biopsies taken decades ago. For cases who developed stomach cancer several years after index biopsy and their matched controls, paraffin-embedded blocks will be retrieved for metagenomic analysis of H. pylori and other microfloras, using our new method with laser capture micro-dissection, DNA amplification and sequencing. Interactions of host response and environmental exposures with the gastric microbiome will also be checked. To explore the molecular mechanism underlying the gastric carcinogenesis, we will further examine gastric epigenetic changes and mutation profiles by novel methods which require minute amount of starting material. Moreover, we will develop non-invasive tests for infections with carcinogenic strains of H. pylori and other microorganisms, which can easily be deployed in low-resource countries. This project will not only contribute significantly to reducing the worldwide burden of this dreaded malignancy, but also broaden our understanding of the mechanisms linking infection, inflammation and cancer development, and open a door for research using the vast resources of archived pathology materials.ver más
Seleccionando "Aceptar todas las cookies" acepta el uso de cookies para ayudarnos a brindarle una mejor experiencia de usuario y para analizar el uso del sitio web. Al hacer clic en "Ajustar tus preferencias" puede elegir qué cookies permitir. Solo las cookies esenciales son necesarias para el correcto funcionamiento de nuestro sitio web y no se pueden rechazar.
Cookie settings
Nuestro sitio web almacena cuatro tipos de cookies. En cualquier momento puede elegir qué cookies acepta y cuáles rechaza. Puede obtener más información sobre qué son las cookies y qué tipos de cookies almacenamos en nuestra Política de cookies.
Son necesarias por razones técnicas. Sin ellas, este sitio web podría no funcionar correctamente.
Son necesarias para una funcionalidad específica en el sitio web. Sin ellos, algunas características pueden estar deshabilitadas.
Nos permite analizar el uso del sitio web y mejorar la experiencia del visitante.
Nos permite personalizar su experiencia y enviarle contenido y ofertas relevantes, en este sitio web y en otros sitios web.