Michael Harrop
Well-known member
https://medicalxpress.com/news/2025-07-newly-gut-bacteria-proteins-hormones.html
https://www.nature.com/articles/s41564-025-02064-x
https://www.nature.com/articles/s41564-025-02064-x
"We're now translating our basic research into human studies to explore whether RORDEP-producing bacteria or the RORDEP proteins—either in their natural or chemically modified form—can serve as the foundation for a new class of biological drugs known as pharmabiotics," says Professor Oluf Pedersen from the University of Copenhagen, project leader and senior author of the new study.
He adds, "Looking 10 to 15 years ahead, our goal is to test the potential of RORDEP-producing bacteria for both prevention and treatment. We want to investigate whether they can function as a second-generation probiotic—used as a dietary supplement to prevent common chronic diseases—and whether RORDEP-proteins in modified forms can be developed into future medicines for cardiovascular disease, obesity, diabetes, and osteoporosis."
Abstract
The human gut microbiota has the potential to synthesize proteins that may influence host metabolism. Here we report two polypeptides, RUMTOR-derived peptide (RORDEP) 1 and RORDEP2, circulating in human blood and synthesized by specific strains of gut commensal Ruminococcus torques that correlate inversely with adiposity in humans.
Oral gavage with RORDEP-expressing strains improved glucose tolerance, increased bone density and reduced fat mass with an enhanced expression of genes and proteins involved in thermogenesis and lipolysis in lean mice on a high-fat diet and diet-induced obese mice. Recombinant RORDEP1 given to rats intraperitoneally decreased plasma gastric inhibitory polypeptide but increased glucagon-like peptide 1, peptide YY and insulin. Intestinal delivery of recombinant RORDEP1 to rats potentiated insulin-mediated inhibition of hepatic glucose production by downregulating genes and proteins controlling liver gluconeogenesis, glycogenolysis and lipogenesis but upregulating those involved in insulin signalling, glycogenesis and glycolysis.
These preclinical findings warrant the exploration of RORDEPs for the prevention and treatment of human metabolic disorders.
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