Header

UZH-Logo

Maintenance Infos

The Immunomodulatory Properties of Helicobacter pylori Confer Protection Against Allergic and Chronic Inflammatory Disorders


Arnold, Isabelle C; Hitzler, Iris; Müller, Anne (2012). The Immunomodulatory Properties of Helicobacter pylori Confer Protection Against Allergic and Chronic Inflammatory Disorders. Frontiers in Cellular and Infection Microbiology:2:10.

Abstract

Chronic infection with the gastric bacterial pathogen Helicobacter pylori causes gastritis and predisposes carriers to a high risk of developing gastric and duodenal ulcers, gastric cancer, and gastric lymphoma, but has also recently been shown to protect against certain allergic and chronic inflammatory disorders. The immunomodulatory properties that allow the bacteria to persist for decades in infected individuals in the face of a vigorous, yet ultimately non-protective, innate, and adaptive immune response may at the same time confer protection against allergies, asthma, and inflammatory bowel diseases. Experimental evidence from mouse models suggests that H. pylori has evolved to skew the adaptive immune response toward immune tolerance rather than immunity, which promotes persistent infection on the one hand, and inhibits auto-aggressive and allergic T-cell responses on the other. Regulatory T-cells mediating peripheral immune tolerance have emerged as key cellular players in facilitating persistent infection as well as protection from allergies, in both observational studies in humans and experimental work in mice. Recent data suggest that H. pylori actively targets dendritic cells to promote tolerance induction. The findings discussed in this review raise the possibility of harnessing the immunomodulatory properties of H. pylori for the prevention and treatment of allergic and auto-immune diseases, and also provide new insights relevant for H. pylori-specific vaccine development.

Abstract

Chronic infection with the gastric bacterial pathogen Helicobacter pylori causes gastritis and predisposes carriers to a high risk of developing gastric and duodenal ulcers, gastric cancer, and gastric lymphoma, but has also recently been shown to protect against certain allergic and chronic inflammatory disorders. The immunomodulatory properties that allow the bacteria to persist for decades in infected individuals in the face of a vigorous, yet ultimately non-protective, innate, and adaptive immune response may at the same time confer protection against allergies, asthma, and inflammatory bowel diseases. Experimental evidence from mouse models suggests that H. pylori has evolved to skew the adaptive immune response toward immune tolerance rather than immunity, which promotes persistent infection on the one hand, and inhibits auto-aggressive and allergic T-cell responses on the other. Regulatory T-cells mediating peripheral immune tolerance have emerged as key cellular players in facilitating persistent infection as well as protection from allergies, in both observational studies in humans and experimental work in mice. Recent data suggest that H. pylori actively targets dendritic cells to promote tolerance induction. The findings discussed in this review raise the possibility of harnessing the immunomodulatory properties of H. pylori for the prevention and treatment of allergic and auto-immune diseases, and also provide new insights relevant for H. pylori-specific vaccine development.

Statistics

Citations

Dimensions.ai Metrics
76 citations in Web of Science®
81 citations in Scopus®
Google Scholar™

Altmetrics

Downloads

173 downloads since deposited on 18 Oct 2012
12 downloads since 12 months
Detailed statistics

Additional indexing

Item Type:Journal Article, refereed, original work
Communities & Collections:04 Faculty of Medicine > Institute of Molecular Cancer Research
07 Faculty of Science > Institute of Molecular Cancer Research
Dewey Decimal Classification:570 Life sciences; biology
Scopus Subject Areas:Life Sciences > Microbiology
Life Sciences > Immunology
Health Sciences > Microbiology (medical)
Health Sciences > Infectious Diseases
Language:English
Date:2012
Deposited On:18 Oct 2012 08:28
Last Modified:01 Dec 2020 04:26
Publisher:Frontiers Research Foundation
ISSN:2235-2988
OA Status:Gold
Free access at:PubMed ID. An embargo period may apply.
Publisher DOI:https://doi.org/10.3389/fcimb.2012.00010
PubMed ID:22919602

Download

Gold Open Access

Download PDF  'The Immunomodulatory Properties of Helicobacter pylori Confer Protection Against Allergic and Chronic Inflammatory Disorders'.
Preview
Filetype: PDF
Size: 717kB
View at publisher
Licence: Creative Commons: Attribution-NonCommercial 3.0 Unported (CC BY-NC 3.0)