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Cd22

CD22:B细胞受体辅因子

CD22,又被称为Siglec-2,普遍存在于正常B细胞和B细胞恶性肿瘤中。CD22主要表达于成熟B细胞,是具有调控B细胞激活作用的细胞表面粘附分子,有助于B细胞对抗原反应敏感性的控制。此外,有研究进一步证明了CD22表达在B细胞中具有特异性,并且在小鼠和人类中都受到发育调控。CD22作为B细胞受体(BCR)的一个共受体,通过抗原引起CD22与BCR交联,触发CD22磷酸化,使下游信号蛋白去磷酸化和失活,从而抑制BCR信号传导,防止自身免疫性疾病的发生。意味着,CD22表达或功能受损在自身免疫性疾病的发病机制中起重要作用,如系统性红斑狼疮(SLE)、类风湿性关节炎(RA)等。因此,作为限制B细胞的抗原,CD22为治疗自身免疫疾病和血液癌症中的B细胞失调提供了有效靶点。

Recombinant Human CD22 活性蛋白实验验证数据

High Purity Validated by SDS-PAGE

(Tris-Glycine gel) Discontinuous SDS-PAGE (reduced) with 5% enrichment gel and 15% separation gel.

Excellent Bioactivity Validated by Functional ELISA

Measured by its binding ability in a functional ELISA. Immobilized CD22 at 2 μg/ml can bind Anti-CD22 rabbit monoclonal antibody, the EC50 of human CD22 protein is 4.034-4.800 ng/ml.

Cd22 Antibodies

Cd22 for Homo sapiens (Human)

Cd22 Proteins

Cd22 Proteins for Homo sapiens (Human)

Cd22 Proteins for Mus musculus (Mouse)

Cd22 Proteins for Gorilla gorilla gorilla (Lowland gorilla)

Cd22 Proteins for Pongo pygmaeus (Bornean orangutan)

Cd22 Proteins for Pan troglodytes (Chimpanzee)

Cd22 Proteins for Pan paniscus (Pygmy chimpanzee) (Bonobo)