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Injectable Thermosensitive Polypeptide-Based CDDP-Complexed Hydrogel for Improving Localized Antitumor Efficacy

Injectable Thermosensitive Polypeptide-Based CDDP-Complexed Hydrogel for Improving Localized Antitumor Efficacy

Shuangjiang Yu, Dianliang Zhang, Chaoliang He, Wujin Sun, Rangjuan Cao, Shusen Cui, Mingxiao Deng, Zhen Gu, Xuesi Chen

Biomacromolecules. 2017 Dec 11;18(12):4341-4348.

PMID: 29141405

Abstract:

In this study, a type of novel thermosensitive polypeptide-based hydrogel with tunable gelation behavior through changing the content of carboxyl groups was developed for the purpose of improving the cisplatin (CDDP) release behavior and enhancing the localized antitumor efficiency. The introduction of carboxyl groups in methoxy-poly(ethylene glycol)-b-(poly(γ-ethyl-l-glutamate-co-l-glutamic acid) (mPEG-b-P(ELG-co-LG)) not only led to adjustable mechanical properties of the hydrogel but also significantly reduced the burst release of the drug through the complexation between the carboxyl groups of polypeptide and CDDP. Furthermore, both the good biocompatibility and the biodegradable properties of mPEG-b-P(ELG-co-LG) hydrogel were observed in vivo. Interestingly, the CDDP-complexed mPEG-b-P(ELG-co-LG) hydrogel exhibited significantly enhanced antitumor efficacy in vivo compared to the mPEG-b-PELG hydrogel loaded with CDDP without complexation, although a lower cytotoxicity and IC50 of the CDDP-complexed hydrogel was observed in vitro. Overall, the new type of injectable CDDP-complexed hydrogel may serve as an efficient platform for sustained CDDP delivery in localized tumor therapy.

Chemicals Related in the Paper:

Catalog Number	Product Name	Structure	CAS Number	Price
AP25189520	Poly(γ-ethyl-L-glutamate)		25189-52-0	Price

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