Fecal transplant from myostatin deletion pigs positively impacts the gut-muscle axis
Abstract
The host genome may influence the composition of the intestinal microbiota, and the intestinal microbiota has a significant effect on muscle growth and development. In this study, we found that the deletion of the myostatin (MSTN) gene positively regulates the expression of the intestinal tight junction-related genes TJP1 and OCLN through the myosin light-chain kinase/myosin light chain pathway. The intestinal structure of MSTN−/− pigs differed from wild-type, including by the presence of a thicker muscularis and longer plicae. Together, these changes affect the structure of intestinal microbiota. Mice transplanted with the intestinal microbiota of MSTN−/− pigs had myofibers with larger cross-sectional areas and higher fast-twitch glycolytic muscle mass. Microbes responsible for the production of short-chain fatty acids (SCFAs) were enriched in both the MSTN−/− pigs and recipient mice, and SCFAs levels were elevated in the colon contents. We also demonstrated that valeric acid stimulates type IIb myofiber growth by activating the Akt/mTOR pathway via G protein-coupled receptor 43 and ameliorates dexamethasone-induced muscle atrophy. This is the first study to identify the MSTN gene-gut microbiota-SCFA axis and its regulatory role in fast-twitch glycolytic muscle growth.
Data availability
The raw reads of 16s rRNA gene sequences have been submitted to the NCBI BioSample database (Porcine data: PRJNA743164; Mice data: PRJNA743401).
-
pig gut metagenome Raw sequence readsNCBI BioProject, PRJNA743164.
-
mice gut metagenome Raw sequence readsNCBI BioProject, PRJNA743401.
-
Original data of Luo et alScience Data Bank, doi:10.57760/sciencedb.06767.
Article and author information
Author details
Funding
National Natural Science Foundation of China (32260817)
- Jin-Dan Kang
National Natural Science Foundation of China (32260026)
- Lin-Hu Quan
Changbai Mountain Talent Project of Jilin Province (000007)
- Lin-Hu Quan
Higher Education Discipline Innovation Project (D18012)
- Lin-Hu Quan
The funders had no role in study design, data collection and interpretation, or the decision to submit the work for publication.
Ethics
Animal experimentation: The animal study was approved by the Ethics Committee of Yanbian University (approval number SYXK2020-0009).
Copyright
© 2023, Luo et al.
This article is distributed under the terms of the Creative Commons Attribution License permitting unrestricted use and redistribution provided that the original author and source are credited.
Metrics
-
- 1,411
- views
-
- 325
- downloads
-
- 10
- citations
Views, downloads and citations are aggregated across all versions of this paper published by eLife.
Download links
Downloads (link to download the article as PDF)
Open citations (links to open the citations from this article in various online reference manager services)
Cite this article (links to download the citations from this article in formats compatible with various reference manager tools)
Further reading
-
- Developmental Biology
Proteins that allow water to move in and out of cells help shape the development of new blood vessels.
-
- Developmental Biology
- Neuroscience
The ligand Netrin mediates axon guidance through a combination of haptotaxis over short distances and chemotaxis over longer distances.