Dataset Information

ASMT determines gut microbiota and increases neurobehavioral adaptability to exercise in female mice.

ABSTRACT: N-acetylserotonin O-methyltransferase (ASMT) is responsible for melatonin biosynthesis. The Asmt gene is located on the X chromosome, and its genetic polymorphism is associated with depression in humans. However, the underlying mechanism remains unclear. Here, we use CRISPR/Cas9 to delete 20 bp of exon 2 of Asmt, and construct C57BL/6J mouse strain with Asmt frameshift mutation (Asmt^ft/ft). We show that female Asmt^ft/ft mice exhibit anxiety- and depression-like behaviors, accompanied by an obvious structural remodeling of gut microbiota. These behavioral abnormalities are not observed in male. Moreover, female Asmt^ft/ft mice show a lower neurobehavioral adaptability to exercise, while wild-type shows a "higher resilience". Cross-sectional and longitudinal analysis indicates that the structure of gut microbiota in Asmt^ft/ft mice is less affected by exercise. These results suggests that Asmt maintains the plasticity of gut microbiota in female, thereby enhancing the neurobehavioral adaptability to exercise.

SUBMITTER: Liu W

PROVIDER: S-EPMC10630421 | biostudies-literature | 2023 Nov

REPOSITORIES: biostudies-literature

ACCESS DATA

Publications

ASMT determines gut microbiota and increases neurobehavioral adaptability to exercise in female mice.

Liu Weina W Huang Zhuochun Z Zhang Ye Y Zhang Sen S Cui Zhiming Z Liu Wenbin W Li Lingxia L Xia Jie J Zou Yong Y Qi Zhengtang Z

Communications biology 20231107 1

N-acetylserotonin O-methyltransferase (ASMT) is responsible for melatonin biosynthesis. The Asmt gene is located on the X chromosome, and its genetic polymorphism is associated with depression in humans. However, the underlying mechanism remains unclear. Here, we use CRISPR/Cas9 to delete 20 bp of exon 2 of Asmt, and construct C57BL/6J mouse strain with Asmt frameshift mutation (Asmt<sup>ft/ft</sup>). We show that female Asmt<sup>ft/ft</sup> mice exhibit anxiety- and depression-like behaviors, a ...[more]

PMID: 37935873

Similar Datasets

Project description:It was acknowledged long ago that microorganisms have played critical roles in animal evolution. Tibetan wild asses (TWA, Equus kiang) are the only wild perissodactyls on the Qinghai-Tibet Plateau (QTP) and the first national protected animals; however, knowledge about the relationships between their gut microbiota and the host's adaptability remains poorly understood. Herein, 16S rRNA and meta-genomic sequencing approaches were employed to investigate the gut microbiota-host associations in TWA and were compared against those of the co-resident livestock of yak (Bos grunnies) and Tibetan sheep (Ovis aries). Results revealed that the gut microbiota of yak and Tibetan sheep underwent convergent evolution. By contrast, the intestinal microflora of TWA diverged in a direction enabling the host to subsist on sparse and low-quality forage. Meanwhile, high microbial diversity (Shannon and Chao1 indices), cellulolytic activity, and abundant indicator species such as Spirochaetes, Bacteroidetes, Prevotella_1, and Treponema_2 supported forage digestion and short-chain fatty acid production in the gut of TWA. Meanwhile, the enterotype identification analysis showed that TWA shifted their enterotype in response to low-quality forage for a better utilization of forage nitrogen and short-chain fatty acid production. Metagenomic analysis revealed that plant biomass degrading microbial consortia, genes, and enzymes like the cellulolytic strains (Prevotella ruminicola, Ruminococcus flavefaciens, Ruminococcus albus, Butyrivibrio fibrisolvens, and Ruminobacter amylophilus), as well as carbohydrate metabolism genes (GH43, GH3, GH31, GH5, and GH10) and enzymes (β-glucosidase, xylanase, and β-xylosidase, etc.) had a significantly higher enrichment in TWA. Our results indicate that gut microbiota can improve the adaptability of TWA through plant biomass degradation and energy maintenance by the functions of gut microbiota in the face of nutritional deficiencies and also provide a strong rationale for understanding the roles of gut microbiota in the adaptation of QTP wildlife when facing harsh feeding environments.

Project description:BackgroundSpirulina, which are filamentous cyanobacteria, have gained significant popularity in the food industry, medicine, and aquaculture.MethodsIn this study, our objective was to explore the influence of Spirulina on the gut microbiota and exercise capacity of mice undergoing high-intensity exercise. Twenty-four male BALB/c mice were divided into four groups, with six mice in each group. These groups included the control group (Control, in which the mice received saline gavage and were permitted free movement), the exercise group (Running, in which the mice were gavaged with the same volume of saline and subjected to a structured exercise regimen), and the Spirulina intervention groups (including SpirulinaLow and SpirulinaHigh). In the Spirulina intervention groups, the mice were orally administered with Spirulina at doses of 100 and 300 mg/kg/day for four weeks while simultaneously participating in the exercise protocol.ResultsThe results illustrated that the Running group mice subjected to intense exercise exhibited reduced weight and tension, acute damage to muscle and liver tissues, oxidative stress, and an imbalance in the gut microbiota compared with that of the Control group. However, high-concentration Spirulina supplementation was found to increase the tensile strength of the exercise mice by 1.27 ± 0.19 fold (p < 0.05) and ameliorate muscle and liver damage. In the SpirulinaHigh group, the levels of certain indicators related to muscle oxidative stress, including reactive oxygen species, total superoxide dismutase, and catalase, were decreased by 39 ± 5.32% (p < 0.01) and increased by 1.11 ± 0.17 fold and 1.19 ± 0.22 fold (p < 0.01) compared to the Running group. Additionally, a correlation analysis reveals that the alterations in gut microbiota induced by Spirulina might be associated with the indicators of tension and oxidative stress.ConclusionsCollectively, these findings point to the fact that Spirulina can effectively mitigate the acute damage to muscles and the liver induced by intense exercise in mice by enhancing antioxidant capacity and regulating the gut microbiota, thereby providing novel insights into the mechanism underlying the enhancement of exercise function.

Project description:BackgroundSilicon dioxide nanoparticles (SiO2NPs) are widely used as additive in the food industry with controversial health risk. Gut microbiota is a new and hot topic in the field of nanotoxicity. It also contributes a novel and insightful view to understand the potential health risk of food-grade SiO2NPs in children, who are susceptible to the toxic effects of nanoparticles.MethodsIn current study, the young mice were orally administrated with vehicle or SiO2NPs solution for 28 days. The effects of SiO2NPs on the gut microbiota were detected by 16S ribosomal RNA (rRNA) gene sequencing, and the neurobehavioral functions were evaluated by open field test and Morris water maze. The level of inflammation, tissue integrity of gut and the classical indicators involved in gut-brain, gut-liver and gut-lung axis were all assessed.ResultsOur results demonstrated that SiO2NPs significantly caused the spatial learning and memory impairments and locomotor inhibition. Although SiO2NPs did not trigger evident intestinal or neuronal inflammation, they remarkably damaged the tissue integrity. The microbial diversity within the gut was unexpectedly enhanced in SiO2NPs-treated mice, mainly manifested by the increased abundances of Firmicutes and Patescibacteria. Intriguingly, we demonstrated for the first time that the neurobehavioral impairments and brain damages induced by SiO2NPs might be distinctively associated with the disruption of gut-brain axis by specific chemical substances originated from gut, such as Vipr1 and Sstr2. Unapparent changes in liver or lung tissues further suggested the absence of gut-liver axis or gut-lung axis regulation upon oral SiO2NPs exposure.ConclusionThis study provides a novel idea that the SiO2NPs induced neurotoxic effects may occur through distinctive gut-brain axis, showing no significant impact on either gut-lung axis or gut-liver axis. These findings raise the exciting prospect that maintenance and coordination of gastrointestinal functions may be critical for protection against the neurotoxicity of infant foodborne SiO2NPs.

Dataset Information

ASMT determines gut microbiota and increases neurobehavioral adaptability to exercise in female mice.

Publications

ASMT determines gut microbiota and increases neurobehavioral adaptability to exercise in female mice.

Similar Datasets

OmicsDI is part of the ELIXIR infrastructure

Tweets