Volume 128, Issue 35 pp. 10452-10456
Zuschrift

A Modular Method for the High-Yield Synthesis of Site-Specific Protein–Polymer Therapeutics

Dr. Yan Pang

Dr. Yan Pang

Department of Biomedical Engineering, Duke University, Durham, NC, 27708 USA

These authors contributed equally to this work

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Dr. Jinyao Liu

Dr. Jinyao Liu

Department of Biomedical Engineering, Duke University, Durham, NC, 27708 USA

These authors contributed equally to this work

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Yizhi Qi

Yizhi Qi

Department of Biomedical Engineering, Duke University, Durham, NC, 27708 USA

These authors contributed equally to this work

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Dr. Xinghai Li

Dr. Xinghai Li

Department of Biomedical Engineering, Duke University, Durham, NC, 27708 USA

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Prof. Ashutosh Chilkoti

Corresponding Author

Prof. Ashutosh Chilkoti

Department of Biomedical Engineering, Duke University, Durham, NC, 27708 USA

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First published: 21 July 2016
Citations: 9

Abstract

A versatile method is described to engineer precisely defined protein/peptide–polymer therapeutics by a modular approach that consists of three steps: 1) fusion of a protein/peptide of interest with an elastin-like polypeptide that enables facile purification and high yields; 2) installation of a clickable group at the C terminus of the recombinant protein/peptide with almost complete conversion by enzyme-mediated ligation; and 3) attachment of a polymer by a click reaction with near-quantitative conversion. We demonstrate that this modular approach is applicable to various protein/peptide drugs and used it to conjugate them to structurally diverse water-soluble polymers that prolong the plasma circulation duration of these proteins. The protein/peptide–polymer conjugates exhibited significantly improved pharmacokinetics and therapeutic effects over the native protein/peptide upon administration to mice. The studies reported here provide a facile method for the synthesis of protein/peptide–polymer conjugates for therapeutic use and other applications.

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