Bacillus sp. DU-106 ameliorates type 2 diabetes by modulating gut microbiota in high-fat-fed and streptozotocin-induced mice

Abstract Aims Type 2 diabetes (T2D) is a chronic disease that manifests as endocrine and metabolic disorders that seriously threatening public health. This study aimed to investigate the effects of Bacillus sp. DU-106 on anti-diabetic effects and gut microbiota in C57BL/6J mice fed a high-fat diet and streptozotocin-induced T2D. Methods and Results Bacillus sp. DU-106 was administered to model mice for eight consecutive weeks. Oral administration of Bacillus sp. DU-106 decreased food and water intake and alleviated body weight loss. Moreover, Bacillus sp. DU-106 imparted several health benefits to mice, including balanced blood glucose, alleviation of insulin resistance in T2D mice and an improvement in lipid metabolism. Furthermore, Bacillus sp. DU-106 protected against liver and pancreatic impairment. Additionally, Bacillus sp. DU-106 treatment reshaped intestinal flora by enhancing gut microbial diversity and enriching the abundance of certain functional bacteria. Conclusion Collectively, these findings suggest that Bacillus sp. DU-106 can ameliorate T2D by regulating the gut microbiota. Significance and Impact of Study Therefore, a novel probiotic, Bacillus sp. DU-106 may be a promising therapeutic agent for improving and alleviating T2D in mice.