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Tempting fate: BMP signals for cardiac morphogenesis
Michael D Schneider1, Vinciane Gaussin, Karen M Lyons
1Department of Medicine, Center for Cardiovascular Development, Baylor College of Medicine, One Baylor Plaza, Room 506D, Houston, TX 77030, USA. michaels@bcm.tmc.edu
Cytokine & Growth Factor Reviews
|December 18, 2002
Summary
Bone morphogenetic proteins regulate heart development. New methods using specific gene mutations reveal essential roles for these proteins in mammalian cardiac development, overcoming previous research limitations.
Area of Science:
- Developmental Biology
- Molecular Biology
- Genetics
Background:
- Bone morphogenetic proteins (BMPs) and their receptors are known regulators of cardiac myogenesis and morphogenesis in model organisms.
- Studying BMPs in mammalian cardiac development is challenging due to early lethality associated with traditional gene knockout models.
Purpose of the Study:
- To investigate the essential functions of the bone morphogenetic protein (BMP) signaling pathway in mammalian cardiac development.
- To overcome limitations posed by early lethality in studying BMPs during mammalian heart formation.
Main Methods:
- Utilized lineage- or compartment-restricted null alleles to circumvent early lethality.
- Employed hypomorphic alleles to study partial loss-of-function effects of BMP pathway components.
- Focused on mammalian cardiac development models.
Main Results:
- Identified novel, essential functions for the BMP cascade in mammalian cardiac development.
- Demonstrated the utility of restricted and hypomorphic alleles in studying critical developmental pathways.
- Provided new insights into the genetic regulation of heart formation in mammals.
Conclusions:
- Lineage-restricted and hypomorphic alleles are effective tools for dissecting essential gene functions in mammalian development.
- The bone morphogenetic protein cascade plays critical, previously uncharacterized roles in mammalian cardiac development.
- This research advances our understanding of congenital heart disease etiology and potential therapeutic targets.