Journal
BLOOD REVIEWS
Volume 39, Issue -, Pages -Publisher
CHURCHILL LIVINGSTONE
DOI: 10.1016/j.blre.2019.100610
Keywords
Beta-2-glycoprotein I; Antiphospholipid syndrome; Coagulation; Complement; Structural biochemistry
Categories
Funding
- Medical Research Council - DPFS
- Lupus UK [549572]
- ARUK [548143, 21223]
- MRC [MR/P017371/1] Funding Source: UKRI
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Beta-2-Glycoprotein I (beta 2GPI) plays a number of essential roles throughout the body. beta 2GPI, C-reactive protein and thrombomodulin are the only three proteins that possess the dual capability to up and down regulate the complement and coagulation systems depending upon external stimulus. Clinically, beta 2GPI is the primary antigen in the autoimmune condition antiphospholipid syndrome (APS), which is typically characterised by pregnancy morbidity and vascular thrombosis. This protein is also capable of adopting at least two distinct structural forms, but it has been argued that several other intermediate forms may exist. Thus, beta 2GPI is a unique protein with a key role in haemostasis, homeostasis and immunity. In this review, we examine the genetics, structure and function of beta 2GPI in the body and how these factors may influence its contribution to disease pathogenesis. We also consider the clinical implications of beta 2GPI in the diagnosis of APS and as a potentially novel therapeutic target.
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