Related Experiment Videos
[Somitogenesis models and related genes in animals]
Jing Liu1, Na Wang, Zuo-Yan Zhu
1State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, China. gene_liujing@yahoo.com.cn
Yi Chuan = Hereditas
|July 28, 2006
Summary
Embryonic development involves forming somites, segmented structures crucial for body axis formation. Research supports a "segmental clock" mechanism, essential for understanding somitogenesis and vertebrate development.
Area of Science:
- Developmental biology
- Embryogenesis
- Cell differentiation
Context:
- Somites are transient structures formed along the anterior-posterior axis during embryonic development.
- Somite cells differentiate into sclerotome (vertebrae), dermatome (dermis), and myotome (skeletal muscle).
- Several models, including clock-based mechanisms, have been proposed to explain somitogenesis.
Purpose:
- To review existing models of somitogenesis.
- To highlight the evidence supporting the existence of a segmental clock in somitogenesis.
Summary:
- Somitogenesis is a fundamental process in embryonic development where transient structures called somites form along the anterior-posterior axis.
- These somites differentiate into various tissues, including bone, skin, and muscle.
- Multiple models attempt to explain this process, with a recurring theme being the 'segmental clock', supported by gene expression studies (c-hairy, l-fng, her1, Delta C).
Impact:
- Understanding somitogenesis is key to comprehending vertebrate development.
- The concept of a segmental clock provides a framework for future research into developmental timing and patterning.
- Insights into somitogenesis can inform studies on congenital abnormalities affecting the axial skeleton and musculature.