PUBLICATION
Effects of Intestinal Microbiota on the Biological Transformation of Arsenic in Zebrafish: Contribution and Mechanism
- Authors
- Zhong, X., Zhang, G., Huang, J., Chen, L., Shi, Y., Wang, D., Zheng, Q., Su, H., Li, X., Wang, C., Zhang, J., Guo, L.
- ID
- ZDB-PUB-240105-36
- Date
- 2024
- Source
- Environmental science & technology 58(5): 2247-2259 (Journal)
- Registered Authors
- Zhang, Jingjing
- Keywords
- As metabolism, antibiotic, as3mt−/− mutants, probiotics, structural equation model
- MeSH Terms
-
- Animals
- Arsenic*
- Biotransformation
- Gastrointestinal Microbiome*
- Liver/metabolism
- Methyltransferases/genetics
- Methyltransferases/metabolism
- Zebrafish
- PubMed
- 38179619 Full text @ Env. Sci. Tech.
Citation
Zhong, X., Zhang, G., Huang, J., Chen, L., Shi, Y., Wang, D., Zheng, Q., Su, H., Li, X., Wang, C., Zhang, J., Guo, L. (2024) Effects of Intestinal Microbiota on the Biological Transformation of Arsenic in Zebrafish: Contribution and Mechanism. Environmental science & technology. 58(5):2247-2259.
Abstract
Both the gut microbiome and their host participate in arsenic (As) biotransformation, while their exact roles and mechanisms in vivo remain unclear and unquantified. In this study, as3mt-/- zebrafish were treated with tetracycline (TET, 100 mg/L) and arsenite (iAsIII) exposure for 30 days and treated with probiotic Lactobacillus rhamnosusGG (LGG, 1 × 108 cfu/g) and iAsIII exposure for 15 days, respectively. Structural equation modeling analysis revealed that the contribution rates of the intestinal microbiome to the total arsenic (tAs) and inorganic As (iAs) metabolism approached 44.0 and 18.4%, respectively. Compared with wild-type, in as3mt-/- zebrafish, microbial richness and structure were more significantly correlated with tAs and iAs, and more differential microbes and microbial metabolic pathways significantly correlated with arsenic metabolites (P < 0.05). LGG supplement influenced the microbial communities, significantly up-regulated the expressions of genes related to As biotransformation (gss and gst) in the liver, down-regulated the expressions of oxidative stress genes (sod1, sod2, and cat) in the intestine, and increased arsenobetaine concentration (P < 0.05). Therefore, gut microbiome promotes As transformation and relieves As accumulation, playing more active roles under iAs stress when the host lacks key arsenic detoxification enzymes. LGG can promote As biotransformation and relieve oxidative stress under As exposure.
Genes / Markers
Expression
Phenotype
Mutations / Transgenics
Human Disease / Model
Sequence Targeting Reagents
Fish
Orthology
Engineered Foreign Genes
Mapping