1
|
Asada M, Wakai A, Tanaka H, Suwa Y, Tamura Y, Kouyama M, Osawa S, Otsuka H. Investigating the effect of the micelle structures of block and random copolymers on dye solubilization. SOFT MATTER 2024; 20:5040-5044. [PMID: 38804221 DOI: 10.1039/d4sm00009a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/29/2024]
Abstract
To elucidate the correlation between dye solubilization into micelles and their core-shell aggregated structure, the structures of block and random copolymer micelles were characterized. The block copolymer micelles exhibited a higher dye solubilization capacity which correlated with their core volume, clear core-shell contrast and slow solubilization rate.
Collapse
Affiliation(s)
- Masahiko Asada
- Central Research Laboratories, DIC Corporation, 631, Sakado, Sakura, Chiba 285-8668, Japan.
- Department of Chemistry, Graduate School of Science, Tokyo University of Science, 1-3 Kagurazaka, Shinjuku, Tokyo 162-8601, Japan.
| | - Airi Wakai
- Department of Chemistry, Graduate School of Science, Tokyo University of Science, 1-3 Kagurazaka, Shinjuku, Tokyo 162-8601, Japan.
| | - Hisakazu Tanaka
- Central Research Laboratories, DIC Corporation, 631, Sakado, Sakura, Chiba 285-8668, Japan.
| | - Yukie Suwa
- Sakai Plant, DIC Corporation, 3, Takasago 1-chome, Takaishi, Osaka 592-0001, Japan
| | - Yuuji Tamura
- Central Research Laboratories, DIC Corporation, 631, Sakado, Sakura, Chiba 285-8668, Japan.
| | - Mariko Kouyama
- Central Research Laboratories, DIC Corporation, 631, Sakado, Sakura, Chiba 285-8668, Japan.
| | - Shigehito Osawa
- Department of Applied Chemistry, Faculty of Science, Tokyo University of Science, 1-3 Kagurazaka, Shinjuku, Tokyo 162-8601, Japan
| | - Hidenori Otsuka
- Department of Chemistry, Graduate School of Science, Tokyo University of Science, 1-3 Kagurazaka, Shinjuku, Tokyo 162-8601, Japan.
- Department of Applied Chemistry, Faculty of Science, Tokyo University of Science, 1-3 Kagurazaka, Shinjuku, Tokyo 162-8601, Japan
| |
Collapse
|
2
|
Yang Z, Mai H, Wang D, He T, Chen F, Yang C. Systematic Design and Study of Star-like Polymeric Prodrug Unimolecular Micelles β-CD-P[CL- co-(ACL- g-DOX)-SS-MPEG] 21 by DPD Simulations. ACS OMEGA 2023; 8:4963-4971. [PMID: 36777574 PMCID: PMC9910076 DOI: 10.1021/acsomega.2c07371] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/17/2022] [Accepted: 01/16/2023] [Indexed: 06/18/2023]
Abstract
Unimolecular micelles composed of a single polymeric molecule have recently attracted significant attention in anti-cancer drug delivery due to their high thermodynamic stability and small particle sizes. Applying the prodrug strategy to unimolecular micelles may provide superior nano-drug carriers with simultaneous high stability, low drug leakage, and well-drug loading capacity. However, the formation mechanism of the unimolecular prodrug micelles, the superiority of the prodrug strategy, as well as the prodrug controlled release mechanism were scantily understood at the mesoscopic scale. In this work, dissipative particle dynamics mesoscopic simulations were employed to investigate the self-assembly behavior, formation conditions, drug distribution regularities, and the prodrug release process of the star-like polymeric prodrug unimolecular micelles formed by β-CD-P[CL-co-(ACL-g-DOX)-SS-MPEG]21. A special bond-breaking script was used to accomplish the bond-breaking simulation of the grafted DOX bonds and the disulfide bonds. Results showed that to form well monodispersed and superior DOX-loaded unimolecular micelles, the polymer concentration should be well controlled at low volume fractions (≤10.59%), and the detailed molecular structure of the polymer was suggested as β-cyclodextrin-P[caprolactone-co-(amino caprolactone-g-doxorubicin)-disulfide-methyl polyethylene glycol]21) (β-CD-P[CL30-co-(ACL-g-DOX)8-SS-MPEG49]21). By comparison with the DOX physically loaded micelles, it was found that the prodrug unimolecular micelles with DOX grafted on the polymer displayed no drug leakage and superior drug loading capacity. Simulations on the prodrug release process showed that the prodrug unimolecular micelles assembled by β-CD-P[CL30-co-(ACL-g-DOX)8-SS-MPEG49]21 would provide good dual pH/reduction-responsive DOX release performance.
Collapse
Affiliation(s)
- Zexiong Yang
- School
of Chemical Engineering and Light Industry, Guangdong University of Technology, Guangzhou510006, PR China
| | - Haiyan Mai
- Department
of Pharmacy, Third Affiliated Hospital of
Sun Yat-sen University, Guangzhou510630, PR China
| | - Delin Wang
- School
of Chemical Engineering and Light Industry, Guangdong University of Technology, Guangzhou510006, PR China
| | - Teng He
- School
of Chemical Engineering and Light Industry, Guangdong University of Technology, Guangzhou510006, PR China
| | - Fang Chen
- School
of Chemical Engineering and Light Industry, Guangdong University of Technology, Guangzhou510006, PR China
| | - Chufen Yang
- School
of Chemical Engineering and Light Industry, Guangdong University of Technology, Guangzhou510006, PR China
| |
Collapse
|
3
|
Effect of hydrophobic modification of block copolymers on the self-assembly, drug encapsulation and release behavior. J Mol Liq 2022. [DOI: 10.1016/j.molliq.2022.120635] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
|
4
|
Chang D, Niu S, Chu H, Zang D, Sun J, Wang X, Liu T. Influence of amino acids on the aggregation behavior and drug solubilization of branched block copolymers. J Mol Liq 2022. [DOI: 10.1016/j.molliq.2022.119011] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
|
5
|
Pharmaceutical excipient salts effect on micellization and drug solubilization of PEO-PPO-ph-PPO-PEO block copolymer. Colloids Surf B Biointerfaces 2020; 189:110857. [PMID: 32066087 DOI: 10.1016/j.colsurfb.2020.110857] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2019] [Revised: 01/14/2020] [Accepted: 02/10/2020] [Indexed: 11/22/2022]
Abstract
Hydrophobic modification PEO-PPO copolymer BP123 was synthesized, with two aromatic rings in the centre linked to PEO-PPO blocks, and the identical PEO and PPO block numbers were possessed with commercial copolymer P123. The influence of three common pharmaceutical excipient salts sodium chloride (NaCl), sodium citrate (NaCA) and sodium benzoate (NaBZ) on self-assembly behaviors of BP123 and P123 was investigated via cloud point, surface tension, pyrene fluorescence and dynamic light scattering. Solubilization for hydrophobic drug simvastatin (SV) and in vitro drug release behavior were assessed accordingly. In the presence of NaCl or NaCA, cloud point and critical micellization concentration (CMC) decreased, micelles became more hydrophobic, micellar size and drug solubilization increased, drug release rate slowed, and the impact of NaCA was more significant than NaCl. Oppositely, cloud point and CMC increased with the addition of NaBZ. NaBZ could participate in the formation of micelles by hydrophobic aromatic ring, which greatly raised solubilization of SV. Moreover, a different performance occurred when NaBZ was added to BP123 or P123, due to the hydrophobic benzene rings in BP123, which prominently enhanced the interaction with hydrophobic drug, leading to obvious delay of drug release for BP123. This work is conducive to turning copolymer property in diverse pharmaceutical applications and in drug delivery systems as drug carriers.
Collapse
|