抄録
Vitamin D binding protein (DBP), which is also known as a group-specific component (GC)-globulin, is a major plasma carrier protein for vitamin D and its metabolites. DBP is also known as an actin scavenger and a precursor of GC protein-derived macrophage activating factor (GC-MAF). This multifunction protein plays a role in the determination of serum 25-hydroxyvitamin D levels and regulation of the immune system. Therefore, genetic variants of DBP may affect risks of various diseases related with vitamin D levels and the immune system. Until now, various protein and genetic polymorphisms of DBP have been identified. Especially, Gc1S, Gc1F and Gc2 are well-known polymorphisms characterized by isoelectrophoresis, which are derived from two missense variants of DBP gene encoding D432E (rs7041) and T436K (rs4588). In this review, we discuss some relationships between DBP genotypes and common disease risk including osteoporosis, cancer and diabetes.
