DC has a unique character of immunoregulation.DC-SIGN is one member of the C-type lectin superfamily.It is not only the pattern recognition receptor but participates in immunoregulation of DCs.

• DC-SIGN属于DC表面C型凝集素受体超家族成员，它既是DC病原体模式识别和黏附受体，又作为DC特征性多功能免疫分子，参与DC免疫调节作用。