NK的抗体用的是CD49b Biolegend的IgM,与CD3合用,做出来 CD3 VS CD49b图上,CD3-CD49b+方向,有大量的CD3-CD49b+细胞,但不成群,不像说明书上那样是独立的NK群体。抗体已经是按推荐用量了,应该不是不够。而之前用BD的CD49b,做出来就很好。请问倪老师这可能是什么原因。因为这次没有订CD45,所以就直接按CD3CD49b这样来筛,是否因为没有用CD45筛过,造成这样的结果?还是有可能是抗体的问题
DX5 antigen has been recently characterized as CD49b. It is a 150 kD integrin α chain also known as α2 integrin, VLA-2 α chain, and integrin α2 chain. CD49b non-covalently associates with CD29 (β1 integrin) to form the CD49b/CD29 complex known as VLA-2, a receptor for collagen and laminin. CD49b is expressed on platelets, the majority of NK cells, NKT cells, and a small subset of CD8+ T cells (this population can be significantly increased following viral infection). DX5 is used for the identification and isolation of NK cells, and is especially useful for identifying NK cells in mice lacking the NK1.1 antigen.