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The biology of prothrombin
1Department of Pediatrics, Children's Hospital Research Foundation, Cincinnati, Ohio 45229, USA.
Critical Reviews in Eukaryotic Gene Expression
|August 26, 1998
Summary
Prothrombin deficiency in mice leads to embryonic lethality and bleeding events, highlighting its crucial role in both hemostasis and mouse development.
Area of Science:
- Biochemistry
- Developmental Biology
- Hematology
Background:
- Prothrombin and thrombin are key proteins in blood coagulation.
- Previous studies have elucidated prothrombin structure, gene cloning, and expression patterns.
- Gene regulation studies suggest HNF-1's role in liver-specific prothrombin expression.
Purpose of the Study:
- To investigate the biological functions of prothrombin.
- To understand the consequences of prothrombin deficiency in vivo.
- To explore prothrombin's role in embryonic development.
Main Methods:
- Generation of prothrombin-deficient mice using gene targeting technology.
- Observation of embryonic lethality and survival rates.
- Analysis of bleeding events and vascular integrity.
Main Results:
- Prothrombin deficiency causes partial embryonic lethality between days 9.5 and 11.5.
- Surviving mice exhibit fatal bleeding events post-birth.
- Vascular integrity failure due to coagulation defects underlies embryonic lethality.
Conclusions:
- Prothrombin is essential for embryonic development in mice.
- Prothrombin plays a critical role beyond hemostasis, impacting vascular integrity.
- Gene targeting technology provides insights into essential protein functions.