Bacteriophages release vitamin B12 from gut microbes by lysis
Bacteriophages (phages) can release vitamin B12 from gut bacteria by causing them to burst. This process makes the essential nutrient available to the host organism. The finding highlights a novel role for phages in nutrient acquisition.
Phages are viruses that infect bacteria. In this case, they trigger the rupture of specific gut microbes, spilling their internal contents—including stored vitamin B12—into the surrounding environment. This released nutrient can then be absorbed by the host's digestive system, bypassing the need for direct uptake from live bacterial cells.
The discovery positions phages as active participants in host nutrition, not just infectious agents. It suggests that bacterial lysis is a previously unrecognized mechanism for making essential micronutrients available, adding a new layer to our understanding of how gut microbial communities influence overall health and metabolic processes.
This finding could reshape approaches to addressing vitamin B12 deficiencies, particularly for individuals with limited dietary intake or absorption issues. Future research may explore phage-based interventions to boost nutrient availability from the gut microbiome. It could also influence how scientists model host-microbe interactions, potentially leading to new therapeutic strategies that harness natural bacterial turnover to improve nutritional status.