Research progress of chitosan and quaternized chitosan as vaccine adjuvant
Adjuvant is the key factor for many new vaccines to play a protective role.The addition of adjuvant can not only reduce the amount of antigen,but also increase the immunogenicity of its antigen,and stimulate the strong immune response of body.Chitosan,as the product of natural polysaccharide chitin removing part of acetyl group,has the characteristics of adhesion,permeability,biocompatibility and so on,and has been widely studied and applied as a vaccine adjuvant.As a novel adjuvant,it can not only help to induce cellular and humoral immunity,but also activate mucosal immunity.This review discussed the recent progress of chitosan and quaternized chitosan as vaccine adjuvants and the related mechanism.
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