Preparation of PGA-PAE-Micelles for Enhanced Antitumor Efficacy of Cisplatin

ACS Applied Materials & Interfaces
Yazhou ChenJing Huang

Abstract

Poly-γ-l-glutamic acid (PGA) is an outstanding drug carrier candidate owning to its excellent biodegradability and biocompatibility. The PGA carrier may shield toxic drugs from the body and enable the delivery of poorly soluble or unstable drugs and thereby minimize the side effects and improve drug efficacy. However, the limitation of PGA as a drug carrier is low drug loading efficiency (DLE), which is usually below 30%. In this study, we reported a chemical modification method using l-phenylalanine ethyl ester (PAE). PGA-PAE construct was amphiphilic, which could form micelles in aqueous solution. Cisplatin (CDDP), a commonly used chemotherapy drug whose side effect is well-known, was used as a model molecule to test the drug-loading efficiency of PGA-PAE. In this paper, two sizes of CDDP-loaded PGA-PAE micelles (M(Pt)-1 and M(Pt)-2) were prepared, the average diameter of M(Pt)-1 was 106 ± 6 nm and M(Pt)-2 was 210 ± 9 nm. The DLE of M(Pt)-1 and M(Pt)-2 was 52.8 ± 2.2 and 55.8 ± 1.2%, respectively. Both exhibited excellent biocompatibility, stability, and drug-retaining capability in physiological condition. The in vitro accumulative drug-releasing profile, IC50 for different tumor cell lines HeLa, A549, and HCCC9810, and in v...Continue Reading

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Jul 2, 2020·International Journal of Nanomedicine·Saeid MaghsoudiLobat Tayebi
May 9, 2019·Artificial Cells, Nanomedicine, and Biotechnology·Muhammad Asim FarooqBo Wang
Feb 21, 2021·Journal of Controlled Release : Official Journal of the Controlled Release Society·Balaram Ghosh, Swati Biswas

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