Regulation of phagocytosis by TAM receptors and their ligands
Received date: 01 Feb 2010
Accepted date: 19 Mar 2010
Published date: 01 Jun 2010
Copyright
The TAM family of receptors is preferentially expressed by professional and non-professional phagocytes, including macrophages, dendritic cells and natural killer cells in the immune system, osteoclasts in bone, Sertoli cells in testis, and retinal pigmental epithelium cells in the retina. Mutations in the Mertk single gene or in different combinations of the double or triple gene mutations in the same cell cause complete or partial impairment in phagocytosis of their preys; and as a result, either the normal apoptotic cells cannot be efficiently removed or the tissue neighbor cells die by apoptosis. This scenario of TAM regulation represents a widely adapted model system used by phagocytes in all different tissues. The present review will summarize current known functional roles of TAM receptors and their ligands, Gas 6 and protein S, in the regulation of phagocytosis.
Qingxian LU , Qiutang LI , Qingjun LU . Regulation of phagocytosis by TAM receptors and their ligands[J]. Frontiers in Biology, 2010 , 5(3) : 227 -237 . DOI: 10.1007/s11515-010-0034-5
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