相关实验视频

Updated: Jan 11, 2026

Single Myofiber Isolation and Culture from a Murine Model of Emery-Dreifuss Muscular Dystrophy in Early Post-Natal Development

Single Myofiber Isolation and Culture from a Murine Model of Emery-Dreifuss Muscular Dystrophy in Early Post-Natal Development

Published on: July 1, 2020

肌肉干细胞缺乏双素的内在功能障碍始于二次肌肉发生过程中

Marie E Esper^1,2, Alexander Y T Lin^1,2, Dallas Bennett¹

¹Sprott Centre for Stem Cell Research, Regenerative Medicine Program, Ottawa Hospital Research Institute, Ottawa, ON, Canada.

Nature communications

|November 14, 2025

概括

杜申肌肉发育不良 (DMD) 显示胎儿肌肉干细胞 (MuSC) 异常,而不仅仅是出生后的损伤. 准AAK1激酶可能为这种神经肌肉疾病提供治疗干预.

科学领域:

肌肉干细胞生物学肌肉干细胞生物学
神经肌肉疾病研究研究
发育生物学是发展生物学.

背景情况:

杜氏肌肉发育不良症 (DMD) 是由肌肉发育不良的损失引起的,导致肌肉脆弱性和肌肉干细胞 (MuSCs) 损伤.
目前的理解表明,DMD由于累积肌肉损伤而在产后表现出来.

研究的目的:

调查在DMD的胎儿发育过程中消毒素和MuSCs的作用.
确定DMD早期干预的潜在治疗点.

主要方法:

对mdx小鼠胚胎的组织学分析.
胎儿肌肉的单细胞RNA测序.胎儿肌肉的单细胞RNA测序.
对MARK2,NUMB和PARD3相互作用的研究.
基因操纵以删除Numb关联激酶 (AAK1).

主要成果:

没有观察到缺氨酸 (mdx) 的小鼠胚胎中初级肌体发生的损伤.
二次性肌体发生表明胎儿 (f) MuSC 的比例增加,肌体原始细胞减少,导致较少的小肌体纤维.
mdx fMuSCs表现出MARK2和NUMB表达的减少以及PARD3偏振的受损.
删除AAK1挽救了NUMB两极分化,并在mdx胎儿肌肉中改善了肌原原体的产生.

结论:

乳腺癌病理在胎儿发育过程中开始,影响二次肌形成.
AAK1 是 MuSC 两极分化和肌原性祖先生成的关键调节者.
向AAK1为早期DMD干预提供了潜在的治疗策略.

更多相关视频

Immunolabelling Myofiber Degeneration in Muscle Biopsies

Immunolabelling Myofiber Degeneration in Muscle Biopsies

Published on: December 5, 2019

Adult and Embryonic Skeletal Muscle Microexplant Culture and Isolation of Skeletal Muscle Stem Cells

Adult and Embryonic Skeletal Muscle Microexplant Culture and Isolation of Skeletal Muscle Stem Cells

Published on: September 21, 2010

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...

Formation of Muscle Fibers from Myoblasts

Formation of Muscle Fibers from Myoblasts

De novo myogenesis, or the formation of muscle fibers, begins during the early embryonic stages. The skeletal muscle is formed from somites– blocks of embryonic cell layers. The somites are further divided into dermatomes, myotomes, sclerotomes, and syndetomes. Among these, the myotomes give rise to muscle fibers.
Muscle progenitor cells (MPCs) are formed from the myotomes. MPCs express genes that encode the transcription factors Pax3 and Pax7. Along with Pax 3/7, other transcription...