UT Health SA Researchers Cut Lupus Biomarkers in Mice With 1 Gut Bacterium
Updated
Updated · ScienceAlert · Jul 3
UT Health SA Researchers Cut Lupus Biomarkers in Mice With 1 Gut Bacterium
2 articles · Updated · ScienceAlert · Jul 3
Summary
Nature Communications published UT Health SA findings that Faecalibacterium prausnitzii supplementation reduced multiple lupus biomarkers in mouse models, marking the first reported lupus study to restore a depleted bacterium and see benefit.
The team linked lupus-related microbiome dysfunction to low F. prausnitzii levels: less of the bacterium meant less butyrate, damage to gut mucin cells and a more pro-inflammatory state.
Added back to the mice, the bacterium improved fiber digestion, increased anti-inflammatory cells and produced positive changes in the kidneys and spleen—organs often damaged in systemic lupus erythematosus.
About 1.5 million people in the US have SLE, but the work remains early: it was tested only in mice before symptoms develop, and F. prausnitzii is hard to use as a probiotic because oxygen inactivates it and it does not persist long.
Researchers next plan to study the bacterium's immune-active chemicals and how diet alters F. prausnitzii levels, aiming to translate the mechanism into a treatment.
Is a missing gut microbe a trigger for lupus, or is it just a symptom of a much larger, systemic failure?
A potential lupus cure dies on contact with air. How can this fragile microbe become a real-world treatment for millions?
New Hope for Lupus: Faecalibacterium prausnitzii Identified as Potential Probiotic Treatment in 2026 Animal Study
Overview
Researchers at UT Health San Antonio have made a major breakthrough in lupus treatment by identifying Faecalibacterium prausnitzii as a potential probiotic therapy. In a recent study, lupus-prone mice treated with this beneficial bacterium showed a significant reduction in disease biomarkers and improved immune regulation. This discovery highlights the important role of the gut microbiome in lupus progression and opens new possibilities for targeted therapies. Moving beyond traditional treatments, this research offers hope for safer and more effective ways to manage lupus by focusing on the balance of gut bacteria.