Related Experiment Videos
Impaired thrombin generation in beta 2-glycoprotein I null mice
Y Sheng1, S W Reddel, H Herzog
1Department of Medicine and the Department of Immunology, Allergy, and Infectious Disease, University of New South Wales, The St. George Hospital, Sydney, New South Wales 2217, Australia.
The Journal of Biological Chemistry
|January 19, 2001
Summary
Beta-2 glycoprotein I (beta2GPI) plays a crucial role in fetal development and blood clotting. Beta2GPI-null mice exhibit impaired thrombin generation, highlighting its importance in coagulation and pregnancy outcomes.
Area of Science:
- Immunology
- Hematology
- Reproductive Biology
Background:
- Autoimmune antibodies to beta-2 glycoprotein I (beta2GPI) are linked to thrombosis, miscarriage, and thrombocytopenia.
- The physiological and pathological roles of beta2GPI in mammals are not fully understood.
Purpose of the Study:
- To investigate the role of beta2GPI in mammalian physiology and pathology.
- To generate and characterize beta2GPI-null mice.
Main Methods:
- Homologous recombination was used to create beta2GPI-null mice.
- Interbreeding of beta2GPI heterozygotes on a mixed genetic background (129/Sv/C57BL/6).
- Analysis of offspring viability, anatomical and histological features, and in vitro thrombin generation.
Main Results:
- Only 8.9% of offspring from intercrossed heterozygotes possessed disrupted alleles, suggesting a role for beta2GPI in implantation/fetal development.
- Born beta2GPI-null mice appeared anatomically and histologically normal.
- Beta2GPI-null mice demonstrated impaired in vitro thrombin generation compared to wild-type mice.
Conclusions:
- Beta2GPI is essential for successful implantation and/or fetal development in certain mouse strains.
- Beta2GPI plays a significant role in thrombin-mediated coagulation.