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Cloning of the RNA m(6)A Methyltransferase 3 and Its Impact on the Proliferation and Differentiation of Quail Myoblasts

文献类型： 外文期刊

作者： Liu, Jing 1 ; Zhang, Wentao 1 ; Luo, Wei 2 ; Liu, Shuibing 1 ; Jiang, Hongxia 1 ; Liu, Sanfeng 1 ; Xu, Jiguo 3 ; Chen, Biao 1 ;

作者机构： 1.Jiangxi Agr Univ, Coll Anim Sci & Technol, Nanchang 330045, Peoples R China

2.Guangdong Acad Agr Sci, Inst Anim Sci, State Key Lab Livestock & Poultry Breeding, Guangdong Key Lab Anim Breeding & Nutr, Guangzhou 510000, Peoples R China

3.Nanchang Normal Univ, Inst Biol Technol, Nanchang 330032, Peoples R China

4.Key Lab Genet Improvement Indigenous Chicken Breed, Nanchang 330032, Peoples R China

关键词： quail; METTL3; myoblast; gene expression; proliferation; differentiation

期刊名称：VETERINARY SCIENCES （ 影响因子：2.4； ）

ISSN：

年卷期： 2023 年 10 卷 4 期

页码：

收录情况： SCI

摘要： Simple Summary RNA N6-methyladenosine (m(6)A) modification plays an important role in RNA processing, transport, translation, and stem cell differentiation. However, the function of METTL3 in quails' skeletal muscle remains unknown. In this study, we cloned the full-length coding sequence of the quail METTL3 and examined its control of myoblast proliferation and differentiation, as well as the downstream genes and signaling pathways that it regulates. Our findings shed light on the regulatory network that governs poultry skeletal muscle growth and development. Methyltransferase 3 (METTL3), which has been demonstrated to play a crucial role in a variety of biological processes, is the key enzyme for catalyzing m(6)A modification in RNA. However, the complete protein sequence of METTL3 in quail has not been annotated, and its function in skeletal muscle of quails remains unknown. In the current study, the full-length coding sequence of the quail METTL3 was obtained through the 3 ' rapid amplification of cDNA ends (3' RACE) and its homology with that of other species was predicted based on a generated phylogenetic tree. A Cell Counting Kit-8 assay and flow cytometry in a quail myoblast cell line (QM7) demonstrated that METTL3 promotes myoblast proliferation. The overexpression of METTL3 in QM7 cells significantly increased the expression levels of the myoblast differentiation markers myogenin (MYOG), myogenic differentiation 1 (MYOD1), and myocyte enhancer factor 2C (MEF2C), further demonstrating that METTL3 promotes myoblast differentiation. Additionally, transcriptome sequencing following METTL3 overexpression revealed that METTL3 controls the expression of various genes involved in RNA splicing and the regulation of gene expression, as well as pathways such as the MAPK signaling pathway. Taken together, our findings demonstrated that METTL3 plays a vital function in quail myoblast proliferation and differentiation and that the METTL3-mediated RNA m(6)A modification represents an important epigenetic regulatory mechanism in poultry skeletal muscle development.

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