The Rheumatologist
COVID-19 News
  • Connect with us:
  • Facebook
  • Twitter
  • LinkedIn
  • YouTube
  • Feed
  • Home
  • Conditions
    • Rheumatoid Arthritis
    • SLE (Lupus)
    • Crystal Arthritis
      • Gout Resource Center
    • Spondyloarthritis
    • Osteoarthritis
    • Soft Tissue Pain
    • Scleroderma
    • Vasculitis
    • Systemic Inflammatory Syndromes
    • Guidelines
  • Resource Centers
    • Ankylosing Spondylitis Resource Center
    • Gout Resource Center
    • Rheumatoid Arthritis Resource Center
    • Systemic Lupus Erythematosus Resource Center
  • Drug Updates
    • Biologics & Biosimilars
    • DMARDs & Immunosuppressives
    • Topical Drugs
    • Analgesics
    • Safety
    • Pharma Co. News
  • Professional Topics
    • Ethics
    • Legal
    • Legislation & Advocacy
    • Career Development
      • Certification
      • Education & Training
    • Awards
    • Profiles
    • President’s Perspective
    • Rheuminations
  • Practice Management
    • Billing/Coding
    • Quality Assurance/Improvement
    • Workforce
    • Facility
    • Patient Perspective
    • Electronic Health Records
    • Apps
    • Information Technology
    • From the College
    • Multimedia
      • Audio
      • Video
  • Resources
    • Issue Archives
    • ACR Convergence
      • Systemic Lupus Erythematosus Resource Center
      • Rheumatoid Arthritis Resource Center
      • Gout Resource Center
      • Abstracts
      • Meeting Reports
      • ACR Convergence Home
    • American College of Rheumatology
    • ACR ExamRheum
    • Research Reviews
    • ACR Journals
      • Arthritis & Rheumatology
      • Arthritis Care & Research
      • ACR Open Rheumatology
    • Rheumatology Image Library
    • Treatment Guidelines
    • Rheumatology Research Foundation
    • Events
  • About Us
    • Mission/Vision
    • Meet the Authors
    • Meet the Editors
    • Contribute to The Rheumatologist
    • Subscription
    • Contact
  • Advertise
  • Search
You are here: Home / Articles / Research Suggests Th17 Cells Have Microbiota-Dependent Role in RA

Research Suggests Th17 Cells Have Microbiota-Dependent Role in RA

March 18, 2019 • By Kathy Holliman

  • Tweet
  • Email
Print-Friendly Version / Save PDF
Alpha Tauri 3D Graphics / shutterstock.com

Alpha Tauri 3D Graphics / shutterstock.com

A growing body of research is elucidating the role of intestinal microbiota in several auto­immune diseases, including rheumatoid arthritis (RA). Research published in December 2018 Arthritis & Rheumatology increases our understanding of the “extent and nature of mucosal immune activation during preclinical arthritis.”1

You Might Also Like
  • Salt as a Promoter of Th17 Cells and Autoimmune Disease
  • Th17 Cells Explained
  • Mouse Model Suggests Regulatory T Cells Play Important Role in Sjögren’s Syndrome Pathophysiology
Explore This Issue
March 2019
Also By This Author
  • Couples Coping with Chronic Pain

The research objective, according to the report, was to “dissect intestinal mucosal immune responses in the pre­clinical phase of arthritis and determine whether the presence of Th17 cells, beyond involvement of the cytokine interleukin-17 (IL-17), is required for arthritis development and whether the involvement of Th17 cells in arthritis depends on the composition of the host microbiota.”

ad goes here:advert-1
ADVERTISEMENT
SCROLL TO CONTINUE

The research, using murine models of inflammatory arthritis, suggests that activation of mucosal immunity precedes the development of arthritis and that Th17 cells have a microbiota-dependent role in arthritis. These models (collagen-induced arthritis and antigen-induced arthritis) involve injections into the skin and/or joints, without direct exposure of the gut to antigen.

One of the researchers, Marije I. Koenders, PhD, assistant professor of experimental rheumatology at Radboud University Medical Center, Nijmegen, The Netherlands, explains the findings “demonstrate initiation of mucosal Th1 and Th17 cell responses and marked production of tumor necrosis factor α [TNFα], granulocyte-macrophage colony-stimulating factor [GM-CSF], and IL-22 by mucosal CD4+ T cells just before the clinical onset of arthritis.

ad goes here:advert-2
ADVERTISEMENT
SCROLL TO CONTINUE

“This suggests that activation of intestinal mucosal T cells during the immune-priming phase of RA may contribute to early, preclinical processes,” she says.

Although no direct application exists for this murine model-based research in clinical practice at this time, Dr. Koenders says microbiome-guided stratification of patients with inflammatory arthritis may improve therapeutic efficacy in the future.

“A microbiota that drives a string Th17 profile in arthritis patients may be a good indication for, for example, anti-IL-17 treatment or RORɣT blocking, whereas other microbiota may suggest a less important role for the Th17 pathway in disease,” she says.

ad goes here:advert-3
ADVERTISEMENT
SCROLL TO CONTINUE

“Currently, we are expanding our research in a model closer to the clinical situation. We are creating a humanized mouse model with human (patient-derived) microbiota in our mice to study the role of the microbiome in a highly translational setting to gain more insight into the mucosal cytokine responses and immunological consequences during arthritis development, especially in patients with new-onset RA.”

Role of the Microbiome

Research has found the composition of intestinal microbiota is altered in patients with RA. Patients with recent onset RA in North America have been found to have an increased amount of Prevotella copri and a reduced amount of Bacteroides in the gut.2

Subgroups of patients with RA have differential immunoglobulin G (IgG) or IgA immune reactivity with P. copri. A recent study found that about half of patients with RA have T cell responses to P. copri, responses that were either IgA antibody responses to P. copri, suggesting a mucosal immune response, or IgG antibodies to the organism, suggesting a systemic immune response.3

Mucosal surfaces—periodontal, lung, and intestinal tissues—are the proposed site of immune activation and breach of tolerance in RA, according to recent research, but the extent and nature of the mucosal immune activation during preclinical arthritis have been unclear.4

Pages: 1 2 3 | Single Page

Filed Under: Conditions, Research Reviews, Rheumatoid Arthritis Tagged With: IL-17 Cytokine, Microbiome, Th17Issue: March 2019

You Might Also Like:
  • Salt as a Promoter of Th17 Cells and Autoimmune Disease
  • Th17 Cells Explained
  • Mouse Model Suggests Regulatory T Cells Play Important Role in Sjögren’s Syndrome Pathophysiology
  • Gut Microbiota Directly Affects Inflammatory Arthritis

American College of Rheumatology

Visit the official website for the American College of Rheumatology.

Visit the ACR »

Meeting Abstracts

Browse and search abstracts from the ACR Convergence and ACR/ARP Annual Meetings going back to 2012.

Visit the Abstracts site »

ACR Convergence

Don’t miss rheumatology’s premier scientific meeting for anyone involved in research or the delivery of rheumatologic care or services.

Visit the ACR Convergence site »

The Rheumatologist newsmagazine reports on issues and trends in the management and treatment of rheumatic diseases. The Rheumatologist reaches 11,500 rheumatologists, internists, orthopedic surgeons, nurse practitioners, physician assistants, nurses, and other healthcare professionals who practice, research, or teach in the field of rheumatology.

About Us / Contact Us / Advertise / Privacy Policy / Terms of Use

  • Connect with us:
  • Facebook
  • Twitter
  • LinkedIn
  • YouTube
  • Feed

Copyright © 2006–2021 American College of Rheumatology. All rights reserved.

ISSN 1931-3268 (print)
ISSN 1931-3209 (online)

loading Cancel
Post was not sent - check your email addresses!
Email check failed, please try again
Sorry, your blog cannot share posts by email.
This site uses cookies: Find out more.