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Modulation of immunogenicity of poly(sarcosine) displayed on various nanoparticle surfaces due to different physical properties
Author(s) -
Kim Cheol Joo,
Hara Eri,
Watabe Naoki,
Hara Isao,
Kimura Shunsaku
Publication year - 2017
Publication title -
journal of peptide science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.475
H-Index - 66
eISSN - 1099-1387
pISSN - 1075-2617
DOI - 10.1002/psc.3053
Subject(s) - sarcosine , chemistry , micelle , immunogenicity , vesicle , nanoparticle , biophysics , avidity , nanocapsules , antibody , chemical engineering , nanotechnology , membrane , biochemistry , amino acid , materials science , organic chemistry , immunology , biology , glycine , aqueous solution , engineering
Poly(sarcosine) displayed on polymeric micelle is reported to trigger a T cell‐independent type2 reaction with B1a cells in the mice to produce IgM and IgG3 antibodies. In addition to polymeric micelle, three kinds of vesicles displaying poly(sarcosine) on surface were prepared here to evaluate the amounts and avidities of IgM and IgG3, which were produced in mice, to correlate them with physical properties of the molecular assemblies. The largest amount of IgM was produced after twice administrations of a polymeric micelle of 35 nm diameter ( G1 ). On the other hand, the production amount of IgG3 became the largest after twice administrations of G3 (vesicle of 229 nm diameter) or G4 (vesicle of 85 nm diameter). The augmented avidity of IgG3 after the twice administrations compared with that at the single administration was the highest with G3 . These differences in immune responses are discussed in terms of surface density of poly(sarcosine) chains, nanoparticle size, hydrophobic component of poly(L‐lactic acid) or (Leu‐ or Val‐Aib) n , and membrane elasticity of the nanoparticles. Copyright © 2017 European Peptide Society and John Wiley & Sons, Ltd.