相关实验视频

Updated: Jun 11, 2025

Author Spotlight: Exploring Orofacial Muscle Regeneration – Insights and Innovations

Author Spotlight: Exploring Orofacial Muscle Regeneration – Insights and Innovations

Published on: December 29, 2023

抑制MAT2A会影响骨肌的修复功能

Wanli Xiao¹, Tian-E Huang¹, Jing Zhou¹

¹Metabolic Control and Aging-Jiangxi Key Laboratory of Aging and Diseases, Human Aging Research Institute (HARI), School of Life Science, Nanchang University, Nanchang 330031, China.

|September 28, 2024

概括

减少的甲氨酸腺转移酶2A (MAT2A) 会损害衰老中的肌肉再生. 降低MAT2A通过p53和Fas增加了细胞亡,阻碍了肌肉的修复和治疗的有效性.

科学领域:

肌肉生物学肌肉生物学
衰老的研究研究.
再生的分子机制的分子机制.

背景情况:

肌肉的再生能力随着年龄的增长而下降,这限制了与年龄相关的肌肉缩的治疗疗效.
甲氨基氨酸转移酶2A (MAT2A) 合成S-adenosylmethionine (SAM) 并对合成过程至关重要.
在老年人和老鼠肌肉组织中观察到MAT2A表达的减少.

研究的目的:

调查MAT2A在与年龄相关的骨肌肉再生衰退中的作用.
为了确定减少的MAT2A是否有助于肌肉修复受损.
阐明涉及MAT2A介导肌肉再生的分子途径.

主要方法:

研究了老年人和老鼠肌肉中的MAT2A表达.
操纵的MAT2A水平 (基因淘汰,酶抑制) 在体外和体内.
在体内给予SAM补充剂.
进行了RNA测序分析.
评估了肌管分化,骨肌损伤,卫星细胞计数,细胞亡和p53/Fas表达.

主要成果:

减少的MAT2A抑制了髓管分化.
在体内,MAT2A抑制加剧了肌肉损伤,并减少了卫星细胞.
补充SAM可以改善这些负面影响.
MAT2A的敲击调节了Fas表达和增加了细胞灭绝.
MAT2A抑制增加了p53的表达.

结论:

损坏的MAT2A表达或活动会影响骨肌肉的再生和修复.
在对MAT2A功能障碍的反应中,p53-Fas信号通路调解了亡.
恢复MAT2A功能或SAM水平可能为与年龄相关的肌肉损失提供治疗潜力.

关键词:

在C2C12中,C2C12是什么?很快就开始了很快就开始了在Mat2a中,mat2a是Mat2a.复兴再生是一种再生方式.这是骨肌肉的骨架肌肉.

更多相关视频

Analyzing Satellite Cell Function During Skeletal Muscle Regeneration by Cardiotoxin Injury and Injection of Self-delivering siRNA In Vivo

Analyzing Satellite Cell Function During Skeletal Muscle Regeneration by Cardiotoxin Injury and Injection of Self-delivering siRNA In Vivo

Published on: September 18, 2019

Evaluation of Injury-induced Senescence and In Vivo Reprogramming in the Skeletal Muscle

Evaluation of Injury-induced Senescence and In Vivo Reprogramming in the Skeletal Muscle

Published on: October 26, 2017

相关概念视频

Satellite Stem Cells and Muscular Dystrophy

Satellite Stem Cells and Muscular Dystrophy

Satellite stem cells or myosatellite cells are quiescent stem cells that Alexander Mauro first identified in 1961. These cells are located between the sarcolemma, the plasma membrane of muscle fibers, and the basal lamina, the connective tissue sheath covering it. These mononucleated cells are activated in response to muscle injury, can transform into myoblasts, and may form or repair muscle fibers. Myosatellite cells can provide additional myonuclei for muscle regeneration or return to a...