CD16a/CD16b分子
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CD16a/CD16b 分子
CD16a
常用单克隆抗体或代号: HUNK2,Leu11,MEM- 154(Fcn RⅢA/Fcg RⅢB)
主要表达细胞: NK,G,Mo,Mac [NK]
分子质量(kDa)和结构: gp50- 80(穿膜形式)(IgSF)
功 能: 吞噬,ADCC,NK活化,信号转导
CD16b
常用单克隆抗体或代号: ID3(Fcg RⅢB)
主要表达细胞: PMN [NK]
分子质量(kDa)和结构: 48(GPI连接)
功 能: 低亲和力免疫复合物受体
CD16a
Aka Fc receptor III A
Important for Ab dependent cytotoxicity of foreign cells
If target cell has class I MHC, then NK cell’s killer cell inhibitory receptor (KIR) inhibits cytolysis
Positive staining (normal): NK cells (10-20%), granulocytes, monocytes (rare), alveolar macrophages (common), T cells (some)
Negative staining: Myelodysplastic syndrome
CD16b
Aka Fc receptor III B
Positive staining: neutrophils