國家衛生研究院 NHRI:Item 3990099045/6252

NHRI > National Institute of Infectious Diseases and Vaccinology > Shih-Jen Liu > Periodical Articles > Item 3990099045/6252

Please use this identifier to cite or link to this item: http://ir.nhri.org.tw/handle/3990099045/6252

Title:	Liposome-based polymer complex as a novel adjuvant: enhancement of specific antibody production and isotype switch
Authors:	Chen, C;Lin, Y;Liu, Y;He, P;Lin, C;Chiu, Y;Wu, C;Cheng, T;Liu, S;Liao, K
Contributors:	Division of Vaccine Research and Development
Abstract:	The aim of vaccination is to induce appropriate immunity against pathogens. Antibody-mediated immunity is critical for protection against many virus diseases, although it is becoming more evident that coordinated, multifunctional immune responses lead to the most effective defense. Specific antibody (Ab) isotypes are more efficient at protecting against pathogen invasion in different locations in the body. For example, compared to other Ab isotypes, immunoglobulin (Ig) A provides more protection at mucosal areas. In this study, we developed a cationic lipopolymer (liposome-polyethylene glycol-polyethyleneimine complex [LPPC]) adjuvant that strongly adsorbs antigens or immunomodulators onto its surface to enhance or switch immune responses. The results demonstrate that LPPC enhances uptake ability, surface marker expression, proinflammatory cytokine release, and antigen presentation in mouse phagocytes. In contrast to Freund's adjuvant, LPPC preferentially activates Th1-immunity against antigens in vivo. With lipopolysaccharides or CpG oligodeoxynucleotides, LPPC dramatically enhances the IgA or IgG2A proportion of total Ig, even in hosts that have developed Th2 immunities and high IgG1 serum titers. Taken together, the results demonstrate that the LPPC adjuvant not only increases the immunogenicity of antigens but also modulates host immunity to produce an appropriate Ab isotype by combining with immunomodulators.
Date:	2012-02
Relation:	International Journal of Nanomedicine. 2012 Feb;2012(7):607-621.
Link to:	http://dx.doi.org/10.2147/IJN.S28097
JIF/Ranking 2023:	http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=NHRI&SrcApp=NHRI_IR&KeyISSN=1178-2013&DestApp=IC2JCR
Cited Times(WOS):	https://www.webofscience.com/wos/woscc/full-record/WOS:000302712700001
Cited Times(Scopus):	http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=84863055513
Appears in Collections:	[Shih-Jen Liu] Periodical Articles

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