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Zhang J, Lou B, Qin X, Li Y, Yuan H, Zhang L, Liu X, Zhang Y, Lu J. Using Amphiphilic Polymer Micelles as the Templates of Antisolvent Crystallization to Produce Drug Nanocrystals. ACS OMEGA 2022; 7:21000-21013. [PMID: 35755329 PMCID: PMC9219533 DOI: 10.1021/acsomega.2c01792] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/24/2022] [Accepted: 05/27/2022] [Indexed: 06/15/2023]
Abstract
Biocompatible and biodegradable amphiphilic polymeric micelles (PLA-CMCS-g-OA) were prepared by surface grafting of oleic acid and polylactic acid onto carboxymethyl chitosan and were used as templates for the crystallization of camptothecin. The camptothecin (CPT) nanocrystals prepared by the novel micelle-templated antisolvent crystallization (mt-ASC) method demonstrated higher crystallinity, narrower particle size distribution, and slower release characteristic than those prepared by conventional antisolvent crystallization (c-ASC) using a high initial concentration and fast addition rate. In particular, the CPT release behavior of mt-ASC products in phosphate buffer solutions presented a pH-responsive characteristic with the increasing release rate of CPT under lower pH conditions. This work confirmed that amphiphilic nanomicelle-templated crystallization was an effective method for preparing drug nanocrystals.
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Affiliation(s)
- Jianghao Zhang
- Chemical
Engineering Department, Frontier Medical Technologies Institute, Shanghai University of Engineering Science, Shanghai 201620, China
| | - Boxuan Lou
- Chemical
Engineering Department, Frontier Medical Technologies Institute, Shanghai University of Engineering Science, Shanghai 201620, China
| | - Xiaolan Qin
- Chemical
Engineering Department, Frontier Medical Technologies Institute, Shanghai University of Engineering Science, Shanghai 201620, China
| | - Yinwen Li
- Materials
Science & Engineering School, Linyi
University, Linyi 276000, China
| | - Haikuan Yuan
- Chemical
Engineering Department, Frontier Medical Technologies Institute, Shanghai University of Engineering Science, Shanghai 201620, China
| | - Lijuan Zhang
- Chemical
Engineering Department, Frontier Medical Technologies Institute, Shanghai University of Engineering Science, Shanghai 201620, China
| | - Xijian Liu
- Chemical
Engineering Department, Frontier Medical Technologies Institute, Shanghai University of Engineering Science, Shanghai 201620, China
| | - Yan Zhang
- Process
Engineering Department, Memorial University
of Newfoundland, St John’s, NL A1B 3X5, Canada
| | - Jie Lu
- Chemical
Engineering Department, Frontier Medical Technologies Institute, Shanghai University of Engineering Science, Shanghai 201620, China
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Song J, Xu B, Yao H, Lu X, Tan Y, Wang B, Wang X, Yang Z. Schiff-Linked PEGylated Doxorubicin Prodrug Forming pH-Responsive Nanoparticles With High Drug Loading and Effective Anticancer Therapy. Front Oncol 2021; 11:656717. [PMID: 33842372 PMCID: PMC8027505 DOI: 10.3389/fonc.2021.656717] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2021] [Accepted: 03/05/2021] [Indexed: 12/28/2022] Open
Abstract
Developing efficacious drug delivery systems for targeted cancer chemotherapy remains a major challenge. Here we demonstrated a kind of pH-responsive PEGylated doxorubicin (DOX) prodrug via the effective esterification and Schiff base reactions, which could self-assemble into the biodegradable micelles in aqueous solutions. Owing to low pH values inside the tumor cells, these PEG-Schiff-DOX nanoparticles exhibited high drug loading ability and pH-responsive drug release behavior within the tumor cells or tissues upon changes in physical and chemical environments, but they displayed good stability at physiological conditions for a long period. CCK-8 assay showed that these PEGylated DOX prodrugs had a similar cytotoxicity to the MCF-7 tumor cells as the free DOX drug. Moreover, this kind of nanoparticle could also encapsulate small DOX drugs with high drug loading, sufficient drug release and enhanced therapeutic effects toward MCF-7 cells, which will be benefited for developing more drug carriers with desirable functions for clinical anticancer therapy.
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Affiliation(s)
- Jian Song
- Department of Pathology, The Seventh Affiliated Hospital of Sun Yat-Sen University, Shenzhen, China
| | - Bingbing Xu
- Department of Sports Medicine, Peking University Third Hospital, Institute of Sports Medicine of Peking University, Beijing, China
| | - Hui Yao
- Eye Hospital, China Academy of Chinese Medical Sciences, Beijing, China
| | - Xiaofang Lu
- Department of Pathology, The Seventh Affiliated Hospital of Sun Yat-Sen University, Shenzhen, China
| | - Yang Tan
- Department of Pathology, The Seventh Affiliated Hospital of Sun Yat-Sen University, Shenzhen, China
| | - Bingyang Wang
- Department of Pathology, The Seventh Affiliated Hospital of Sun Yat-Sen University, Shenzhen, China
| | - Xing Wang
- Beijing National Laboratory for Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing, China.,University of Chinese Academy of Sciences, Beijing, China
| | - Zheng Yang
- Department of Pathology, The Seventh Affiliated Hospital of Sun Yat-Sen University, Shenzhen, China
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