X‐Irradiation Does Not Affect the Levels of Complement Regulatory Proteins, CD35 (CR1), CD55 (DAF) and CD59 on Concentrated Red Cells
Yasuo Fukumori, Tsukasa Seya, Shiro Ohnoki, Hirotoshi Shibata, Hideo Yamaguchi
Abstract
Yasuo Fukumori, Tsukasa Seya, Shiro Ohnoki, Hirotoshi Shibata, Hideo Yamaguchi
Abstract
Abstract Human erythrocytes express complement (C) regulatory proteins, C3b/C4b receptor (CR1, CD35), decay‐accelerating factor (DAF, CD55) and CD59, which protect cells from autologous C attack [ 1 ]. CR1 and DAF are C3‐step regulators which destabilize the classical and alternative C3 convertases [ 1 ]. In addition, CR1 can bind C4b and C3b in the immune complexes to clear them from the circulation, namely immune adherence [ 2 ]. CD59 inhibits the formation of membrane attack complexes [ 1 ].
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Abstract Human erythrocytes express complement (C) regulatory proteins, C3b/C4b receptor (CR1, CD35), decay‐accelerating factor (DAF, CD55) and CD59, which protect cells from autologous C attack [ 1 ]. CR1 and DAF are C3‐step regulators which destabilize the classical and alternative C3 convertases [ 1 ]. In addition, CR1 can bind C4b and C3b in the immune complexes to clear them from the circulation, namely immune adherence [ 2 ]. CD59 inhibits the formation of membrane attack complexes [ 1 ].
Key concepts: CD59, Decay-accelerating factor, Complement receptor 1, Complement system, CD46, Cell biology, Receptor, Immune system