在条纹肌肉发育过程中,p53家族成员的作用,重点关注p63
相关实验视频
Updated: Jan 18, 2026

14:57
Yeast As a Chassis for Developing Functional Assays to Study Human P53
Published on: August 4, 2019
10.0K
Janine M Ziermann-Canabarro1, Julia C Boughner2, Kristen N McPike1
1Department of Anatomy, Howard University College of Medicine, Washington, DC, USA.
概括
p53家族成员p63对肌肉发育至关重要,影响从中皮层诱导到肌细胞分化的一切. 它的各种异构体在肌肉细胞的增殖和组装中起着关键作用.
科学领域:
- 发育生物学 发展生物学
- 分子生物学分子生物学
- 遗传学 是一个遗传学.
背景情况:
- p53家族成员 (p53,p63,p73) 在脊椎动物发育中具有不同的重叠作用.
- 虽然p63突变会导致出生缺陷,但它在肌肉发育中的作用不太清楚.
- 头部和心脏肌肉的分化依赖于上皮信号,这些信号在p63突变小鼠中是有缺陷的,这表明它在肌肉发育中发挥了作用.
研究的目的:
- 审查证据证明p63在条纹肌肉分化中的重要性.
- 为了突出p63在头部和心脏肌肉结构的发展中的作用,从心膜领域衍生出来.
主要方法:
- 审查现有的文献和关于p63功能在肌肉发育中的研究.
- 在肌肉发育过程中分析p63异型表达和功能.
- 对p63突变小鼠模型进行检查,以评估肌形成缺陷.
主要成果:
- 多个p63异型体参与中皮层诱导,肌细胞增殖,细胞周期退出和分化.
- TAp63γ异型体在胚胎肌细胞和内皮中表达,促进肌体的增殖和分化.
- TAp63γ参与了瘤细胞的发育和肌纤维细胞在条纹肌肉中的组合.
结论:
- 在整个肌肉发育过程中,从中皮层诱导到肌细胞分化,p63是活跃的.
- 包括p63异型在内的p53家族成员的重叠功能可能解释了p63突变中的微妙肌肉病变.
- 需要进一步的研究才能充分了解p63突变体中年龄/阶段依赖的肌病缺陷.
相关概念视频
Abnormal Proliferation
5.1K
Under normal conditions, most adult cells remain in a non-proliferative state unless stimulated by internal or external factors to replace lost cells. Abnormal cell proliferation is a condition in which the cell's growth exceeds and is uncoordinated with normal cells. In such situations, cell division persists in the same excessive manner even after cessation of the stimuli, leading to persistent tumors. The tumor arises from the damaged cells that replicate to pass the damage to the...
5.1K
Formation of Muscle Fibers from Myoblasts
5.8K
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...
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...
5.8K
Negative Regulator Molecules
38.3K
Positive regulators allow a cell to advance through cell cycle checkpoints. Negative regulators have an equally important role as they terminate a cell’s progression through the cell cycle—or pause it—until the cell meets specific criteria.
38.3K
Master Transcription Regulators
7.7K
Master transcription regulators are regulatory proteins that are predominantly responsible for regulating the expression of multiple genes. Often these genes work in concert to drive a complex process. Activation of a master transcription regulator can lead to a cascade of transcriptional activation necessary for that outcome. These regulators can directly bind to the regulatory sequences of the various genes involved, or they can indirectly regulate transcription by binding to regulatory...
7.7K
Cells Coordinate Growth and Proliferation
5.0K
Cell size is a significant factor impacting cellular design, function, and fitness. There exists some internal coordination by which cells double their masses before division, thus, achieving homeostasis. Coordination between cell growth and proliferation depends on the checkpoints in between cell cycle phases. Loss of coordination or failure in the checkpoint mechanism can drive the cell to uncontrolled growth and loss of cellular function. Like dividing cells that coordinate cellular growth,...
5.0K
Satellite Stem Cells and Muscular Dystrophy
2.3K
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...
2.3K

