Highlights
• This is the first study to investigate the probiotic characteristics of Lactobacillus isolated from fermented bamboo shoots both in vitro and in vivo, especially the type strain of Lentilactobacillus senioris, DSM 24302T was isolated in 2010, yet its probiotic potential has never been investigated, suggesting that fermented food has great potential to become a probiotic resource bank.
• Lactiplantilactobacillus pentosus YQ001 and Lentilactobacillus senioris YQ005 had more positive effects than Lactobacillus rhamnosus GG on reducing intestinal inflammation in DSS-induced colitis mice by regulating the disordered gut microbiome, thereby affecting serum metabolites and colon cytokine expression, which may be the potential probiotic mechanism of Lactobacillus spp. in improving colitis symptom.
• In this study, mice that ingested Lentilactobacillus senioris YQ005 recovered better and showed a long-lived individual-prone pattern of gut microbiota, Lentilactobacillus senioris YQ005 showed great potential in promoting human health.
• Fermented bamboo shoots as a daily food for people in long-lived and healthy areas provides new insights into the development of daily intake of foods rich in Lactobacillus for the treatment of chronic intestinal disease instead of pharmacological therapy.
Abstract
Fermented bamboo shoots (FBS) is a region-specific food widely consumed in Southwestern China, with Lactobacillus as the predominant fermenting bacteria. However, the probiotic potential of Lactobacillus derived from FBS reminds largely unexplored, especially for diseases with a low prevalence in areas consuming FBS, namely, inflammatory bowel disease. In this study, Lactiplantibacillus pentosus YQ001 and Lentilactobacillus senioris YQ005 were screening by in vitro probiotic tests to further investigate the probioticlike bioactivity in dextran sulfate sodium (DSS)-induced ulcerative colitis (UC) mouse. They exhibited more positive probiotic effects than Lactobacillus rhamnosus GG in preventing intestinal inflammatory response. The results revealed that both strains improved the abundance of deficient intestinal microbiota in UC mice, including Muribaculaceae and Akkermansia. In the serum metabolome, they modulated the DSS-disturbed levels of metabolites, with significant increment of cinnamic acid. Meanwhile, they reduced the expression levels of interleukin-1β (IL-1β), interleukin-6 (IL-6) inflammatory factors and increased zonula occludens-1 (ZO-1), Occludin, and cathelicidin-related antimicrobial peptide (CRAMP) in the colon. Consequently, these results demonstrated that Lactobacillus spp. isolates derived from FBS showed promising probiotic activity based on the gut microbiome homeostasis modulation, anti-inflammation and intestinal barrier protection in UC mice.