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Revealing the Immunogenic Risk of Polymers
Author(s) -
Li Bowen,
Yuan Zhefan,
Hung HsiangChien,
Ma Jinrong,
Jain Priyesh,
Tsao Caroline,
Xie Jingyi,
Zhang Peng,
Lin Xiaojie,
Wu Kan,
Jiang Shaoyi
Publication year - 2018
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.201808615
Subject(s) - immunogenicity , peg ratio , ethylene glycol , polymer , chemistry , conjugate , antibody , biochemistry , biophysics , biology , organic chemistry , immunology , mathematical analysis , mathematics , finance , economics
Poly(ethylene glycol) (PEG) conjugation has been the gold standard to ameliorate the pharmacokinetic (PK) and immunological profiles of proteins. PEG polymer does become immunogenic once attached to proteins, evoking PEG‐specific antibody (Ab) responses. The anti‐PEG Abs could cause PEGylated biologic treatments to fail and even result in lethal adverse reactions. Thus the zwitterionic poly(carboxybetaine) (PCB) has been introduced as a PEG substitute for protein modification. Addressed herein is anti‐polymer Ab induction by conjugating PEG and PCB polymers to a series of carrier proteins with escalating immunogenicity. Results indicate that titers of PEG‐specific Abs were quantitatively correlated to the immunogenicity of carrier proteins, whereas the generation of PCB‐specific Abs was minimal and insensitive to increased protein immunogenicity. This work provides insight into the immunological properties of PEG and PCB and has far‐reaching implications for the development of polymer‐protein conjugates.