ArticleFunctional & integrative genomics2025
Cytosine base editor-mediated high-efficiency myostatin editing in Hu sheep.
Article in Functional & integrative genomics, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
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Who cites it
1 citing paper in PubMed.
- Cytosine base editor-mediated SOCS2 knockout promotes C2C12 cell differentiation via the PI3K/AKT/mTOR signaling pathway.Functional & integrative genomics · 2025Article
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Authors and funding
10 authors.
Funding
Abstract
The cytosine base editor (CBE) enables precise C-to-T substitution without inducing DNA double-strand breaks, which offering a promising tool for editing livestock genomes to enhance economically valuable traits. In this study, using Hu sheep, characterized by high reproductive performance but suboptimal meat production as the research subject, two CBE-editing sgRNAs (sgM1 and sgM2) targeting the negative regulator Myostatin (MSTN) gene were designed. The results revealed a 75% editing efficiency of sgM2 at the parthenogenetically activated embryonic level with no detectable off-target effects. Thirty-four zygotes from five Hu sheep microinjected with sgM2 and CBE mRNA mixtures were transferred into four Hu sheep recipient ewes, yielding four lambs with confirmed MSTN editing and no off-target activity. Statistical analysis of growth performance data revealed that MSTN-edited Hu sheep exhibited significantly (P < 0.05) higher body weights at 120-180 days, and significantly (P < 0.05) enlarged muscle fiber cross-sectional areas compared to wild-type controls. Edited Hu sheep displayed reduced MSTN protein expression, elevated p-AKT levels, and diminished p-ERK and p-p38 signaling. In conclusion, MSTN-edited Hu sheep were highly efficient generated using CBE, and further analysis demonstrate that MSTN editing activates the AKT pathway while suppressing MAPK signaling, leading to muscle fiber hypertrophy and accelerated growth, which provides technical methodologies and breeding materials for developing fast-growing, meat-type Hu sheep-germplasm.
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