PBS, 25% Glycerol, 1% BSA, 0.3% Proclin 300
| 应用 | 稀释度 | 推荐种属 |
|---|---|---|
| FCM | 5 μl per million cells in 100μl volume | Hu |
Siglec-2, also known as CD22, is a type I transmembrane protein belonging to the immunoglobulin superfamily and functions as an inhibitory lectin on B cells. It is characterized by its ability to bind α2,6-linked sialic acid on the same (cis) or adjacent (trans) cells. CD22 plays a crucial role in mediating B cell interactions, directing B cell localization within lymphoid tissues, and regulating B cell antigen receptor signaling. The protein contains four immunoreceptor tyrosine-based inhibitory motifs (ITIMs), allowing it to recruit cytoplasmic phosphatases to inhibit downstream signaling pathways. Additionally, CD22 can form cis interactions with sialylated glycoproteins such as CD45, potentially masking its sialic acid recognition site. Its complex interactions with various signaling molecules highlight its multifaceted role in B cell regulation and immune responses.
Flow cytometric analysis of Human CD22 expression on human peripheral blood lymphocytes. Human peripheral blood lymphocytes were stained with Brilliant Violet 421™ Mouse Anti-Human CD19 Antibody and either Mouse IgG1, κ Isotype Control (Left panel) or SDT FITC Mouse Anti-Human Siglec-2/CD22 Antibody (Right panel) at 5 μl/test. Flow cytometry and data analysis were performed using BD FACSymphony™ A1 and FlowJo™ software.
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