Improvements in Gut Microbiota Dysbiosis in Aged Mice Transplanted with Adipose-Derived Stem Cells.

Adipose-derived stem cells (ASCs), as a cell therapy with considerable therapeutic potential, have received increasing attention in tissue repair, endocrine regulation, immune regulation, and aging and obesity research. Gut microbiota are present in all organisms and play important roles in the development of aging and obesity. Dysbiosis activates inflammatory pathways that may contribute to the development of aging and obesity. We used C57BL/6 J mice of different ages to carry out the experiment. Young mice were used as donors for ASC. Feces from the three groups were collected for 16sRNA sequencing to analyze the species composition of intestinal microorganisms, and then, predicted metabolic pathways by PICRUSt2 using 16s rRNA gene sequences. Immune cell levels in abdominal adipose tissue were assessed by flow cytometry. The content of IL-6, IL-1β, TNF-α, and lipopolysaccharides in serum was measured by ELISA kit. Our 16sRNA sequencing data showed restoration of gut microbiota diversity and an increase in beneficial flora (Akkermansia, Lactobacillus, Prevotella) 7 days after ASC transplantation. In addition, the inflammatory environment improved in older transplanted mice.