Study shows multi-strain probiotic combination yields synergistic anti-aging effects in C. elegans

Researchers demonstrated that combining three specific probiotic strains provides superior lifespan and healthspan extension in C. elegans by complementarily targeting distinct metabolic pathways and uniquely activating the Wnt/Ca2+ pathway.

Researchers at the Ocean University of China evaluated the anti-aging effects of three probiotic strains—Lactiplantibacillus plantarum Q7, Bifidobacterium animalis subsp. lactis F1-7, and Lacticaseibacillus paracasei J5—in Caenorhabditis elegans.

The study found that while all three strains extended both lifespan and healthspan and co-regulated conserved Wnt signaling pathways, they exhibited highly distinct, strain-specific therapeutic signatures.

Specifically, L. plantarum Q7 modulated lipid metabolism, B. animalis F1-7 stimulated immune defense and protein stability, and L. paracasei J5 influenced methionine metabolism and antioxidation.

A combination of all three strains produced superior anti-aging outcomes by integrating these individual pathways additively and uniquely activating the Wnt/Ca2+ pathway, expanding the overall anti-aging regulatory network.

The systemic decline associated with aging makes single-strain interventions limited in their overall therapeutic efficacy.

These findings provide transcriptomic evidence and a logical framework for formulating multi-strain probiotic consortia that address distinct, complementary hallmarks of aging simultaneously.

The unique activation of the Wnt/Ca2+ pathway by the combination highlights that synergistic formulations can trigger biological cascades that single components cannot achieve alone.

This preclinical research supports the shifting paradigm in the longevity nutraceutical market toward multi-strain, mechanism-targeted formulations.

By demonstrating that specific strains target highly distinct metabolic nodes, the study may push supplement developers to use transcriptomic validation to justify specific ingredient combinations.

While the study was conducted in a C. elegans model, the focus on evolutionarily conserved pathways like Wnt highlights potential implications for translational research in higher organisms.

In vivo validation of this three-strain probiotic combination in mammalian models to confirm whether the complementary effects on lipid metabolism, proteostasis, and Wnt/Ca2+ signaling translate to mammals.