NIH-funded research R21 grant

Gut bacteria and steroid hormones in inflammatory bowel disease

Official title: Gut Microbiome Steroid Hormone Metabolism in Inflammatory Disease

Funded at University of Chicago · NIH-11356380 · Data updated 2026-11-12

A study in people and mice looks at how gut bacteria may change steroids that reduce inflammation in inflammatory bowel disease.

More Gut Microbiome research and trials

Quick facts

Grant typeR21 grant
Study typeNIH-funded research
Funding institutionUniversity of Chicago
NIH-funded
Lab location1 site (Chicago, United States)
Project startMay 19, 2026
Project endApril 30, 2028
Funding year2026
Award (this year)$243,824
NIH project number1R21AI199298-01
Project IDNIH-11356380 on NIH RePORTER

Who could benefit from this research

Could help

Ideal candidates include adults with inflammatory bowel disease and healthy controls who consent to stool sample collection for microbiome analysis.

Less likely to help

People without IBD or those unwilling to participate in stool sample collection may not benefit.

What this research studies

This project explores a new way the gut microbiome could affect inflammatory bowel disease by turning active anti-inflammatory steroids into inactive forms. Researchers will compare gut bacteria from people with IBD to healthy controls and use mouse models with defined bacteria to see how these enzymes influence inflammation and response to steroid treatment. The work focuses on a specific bacterial pathway and how it might alter host anti-inflammatory signaling in the gut. Findings could reveal a novel target to improve steroid effectiveness in IBD.

Why it matters

Potential benefit: If successful, this research could lead to strategies that enhance steroid effectiveness or reduce inflammation in IBD by modulating gut bacteria.

How similar studies have gone: Some studies show gut bacteria influence drug metabolism, but this specific glucocorticoid-metabolizing pathway in IBD is exploratory and novel.

Where this research is happening

  • University of Chicago
    Chicago, United States
    Active

Researchers

  • Principal investigator: Light, Samuel — University of Chicago
  • Study coordinator: Light, Samuel

Related research

Other NIH-funded projects on the same topics.

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  • Mapping how gut bacteria transform drugs

    Scientists will study how the gut microbiome changes thousands of drugs into new forms, which could affect how well a medicine works or whether it causes side effects.

    NIH research Stanford University · Stanford, United States · NIH-11550022

  • Aflatoxin exposure and child growth in Guatemala

    A study in rural Guatemala will track how exposure to aflatoxin relates to growth and gut health in young children.

    NIH research Arizona State University-Tempe Campus · Scottsdale, United States · NIH-11513260

  • Gut bacteria that can make cancer immunotherapy less effective

    This project will see if reducing chronic inflammation driven by certain gut bacteria can help immunotherapy work better for people whose cancers have stopped responding.

    NIH research University of Tx Md Anderson Can Ctr · Houston, United States · NIH-11478145

  • How gut bacteria affect how cancer drugs work

    This project looks at how the bacteria in your gut might change how well and with what side effects fluoropyrimidine cancer drugs like 5-FU work in people.

    NIH research University of California, San Francisco · San Francisco, United States · NIH-11473234

  • Gut bacteria and cancer drugs: how your gut may change chemotherapy effectiveness

    This project studies how the gut microbiome might affect how well certain chemotherapy drugs work and their side effects in people with cancer.

    NIH research University of California, San Francisco · San Francisco, United States · NIH-11473233

About this research

  1. This is an active NIH-funded research project — typically early-stage science, not a clinical trial accepting patient enrollment.
  2. Some NIH-funded labs run parallel clinical studies or seek volunteers for related work. To check, contact the principal investigator or institution listed above.
  3. For full project details, budget, and progress reports, visit the official NIH RePORTER page.
Last reviewed 2026-11-14 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.