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Gong TY, Hsu SH, Chang SW, Chou CC. Effects of the Degree of Phenol Substitution on Molecular Structures and Properties of Chitosan-Phenol-Based Self-Healing Hydrogels. ACS Biomater Sci Eng 2023; 9:6146-6155. [PMID: 37857334 DOI: 10.1021/acsbiomaterials.3c00948] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2023]
Abstract
Click chemistry is commonly used to prepare hydrogels, and chitosan-phenol prepared by using a Schiff base has been widely employed in the field of biomaterials. Chitosan-phenol is a derivative of chitosan; the phenol groups can disrupt both the inter- and intramolecular hydrogen bonds in chitosan, thereby reducing its crystallinity and improving its water solubility. In addition, chitosan-phenol exhibits various beneficial physiological functions. However, it is still unclear whether the degree of phenol substitution in the chitosan main chain affects the molecular interactions and structural properties of the self-healing hydrogels. To explore this issue, we investigated the molecular structure and network of self-healing hydrogels composed of chitosan-phenol with varying degrees of phenol substitution and dibenzaldehyde poly(ethylene oxide) (DB-PEO) using molecular dynamics simulations. We observed that when the degree of phenol substitution in the self-healing hydrogel was less than 15%, an increase in the degree of phenol substitution led to an increase in the interactions between chitosan-phenol and DB-PEO, and it enhanced the dynamic covalent bond cross-linking generated through the Schiff base reaction. However, when the degree of phenol substitution exceeded 15%, excessive phenol groups caused excessive intramolecular interactions within chitosan-phenol molecules, which reduced the binding between chitosan-phenol and DB-PEO. Our results revealed the influence of the degree of phenol substitution on the molecular structure of the self-healing hydrogels and showed an optimal degree of phenol substitution. These findings provide important insights for the future design of self-healing hydrogels based on chitosan and should help in enhancing the applicability of hydrogels in the field of biomedicine.
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Affiliation(s)
- Tian-Yu Gong
- Institute of Polymer Science and Engineering, National Taiwan University, Roosevelt Road No. 1, Sec. 4, 10617 Taipei, Taiwan
| | - Shan-Hui Hsu
- Institute of Polymer Science and Engineering, National Taiwan University, Roosevelt Road No. 1, Sec. 4, 10617 Taipei, Taiwan
| | - Shu-Wei Chang
- Department of Civil Engineering, College of Engineering, National Taiwan University, Roosevelt Road No. 1, Sec. 4, 10617 Taipei, Taiwan
- Department of Biomedical Engineering, College of Engineering, National Taiwan University, Roosevelt Road No. 1, Sec. 4, 10617 Taipei, Taiwan
| | - Chia-Ching Chou
- Institute of Applied Mechanics, College of Engineering, National Taiwan University, Roosevelt Road No. 1, Sec. 4, 10617 Taipei, Taiwan
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Yamazaki M, Yabe M, Iijima K. Analysis of the formation mechanism of polyion complexes of polysaccharides by molecular dynamics simulation with oligosaccharides. Polym J 2022. [DOI: 10.1038/s41428-021-00602-y] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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Singhal A, Schneible JD, Lilova RL, Hall CK, Menegatti S, Grafmüller A. A multiscale coarse-grained model to predict the molecular architecture and drug transport properties of modified chitosan hydrogels. SOFT MATTER 2020; 16:10591-10610. [PMID: 33156313 DOI: 10.1039/d0sm01243b] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Hydrogels constructed with functionalized polysaccharides are of interest in a multitude of applications, chiefly the design of therapeutic and regenerative formulations. Tailoring the chemical modification of polysaccharide-based hydrogels to achieve specific drug release properties involves the optimization of many tunable parameters, including (i) the type, degree (χ), and pattern of the functional groups, (ii) the water-polymer ratio, and (iii) the drug payload. To guide the design of modified polysaccharide hydrogels for drug release, we have developed a computational toolbox that predicts the structure and physicochemical properties of acylated chitosan chains, and their impact on the transport of drug molecules. Herein, we present a multiscale coarse-grained model to investigate the structure of networks of chitosan chains modified with acetyl, butanoyl, or heptanoyl moieties, as well as the diffusion of drugs doxorubicin (Dox) and gemcitabine (Gem) through the resulting networks. The model predicts the formation of different network structures, in particular the hydrophobically-driven transition from a uniform to a cluster/channel morphology and the formation of fibers of chitin chains. The model also describes the impact of structural and physicochemical properties on drug transport, which was confirmed experimentally by measuring Dox and Gem diffusion through an ensemble of modified chitosan hydrogels.
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Affiliation(s)
- Ankush Singhal
- Department of Theory and Biosystems, Max Planck Institute for Colloids and Interfaces, Potsdam 14476, Germany.
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Hsu SC, Hsu SH, Chang SW. Effect of pH on Molecular Structures and Network of Glycol Chitosan. ACS Biomater Sci Eng 2019; 6:298-307. [DOI: 10.1021/acsbiomaterials.9b01101] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Effect of zero-valent iron/starch nanoparticle on nitrate removal using MD simulation. Int J Biol Macromol 2019; 121:727-733. [DOI: 10.1016/j.ijbiomac.2018.09.183] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2018] [Revised: 08/28/2018] [Accepted: 09/28/2018] [Indexed: 01/09/2023]
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Mosquera-Giraldo LI, Borca CH, Parker AS, Dong Y, Edgar KJ, Beaudoin SP, Slipchenko LV, Taylor LS. Crystallization Inhibition Properties of Cellulose Esters and Ethers for a Group of Chemically Diverse Drugs: Experimental and Computational Insight. Biomacromolecules 2018; 19:4593-4606. [PMID: 30376299 DOI: 10.1021/acs.biomac.8b01280] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Laura I. Mosquera-Giraldo
- Department of Industrial and Physical Pharmacy, College of Pharmacy, Purdue University, West Lafayette, Indiana, United States
| | - Carlos H. Borca
- Department of Chemistry, College of Science, Purdue University, West Lafayette, Indiana, United States
| | - Andrew S. Parker
- Department of Chemical Engineering, College of Engineering, Purdue University, West Lafayette, Indiana, United States
| | - Yifan Dong
- Department of Chemistry, College of Science, Virginia Tech, Blacksburg, Virginia, United States
| | - Kevin J. Edgar
- Department of Sustainable Biomaterials, College of Natural Resources and Environment, Virginia Tech, Blacksburg, Virginia, United States
| | - Stephen P. Beaudoin
- Department of Chemical Engineering, College of Engineering, Purdue University, West Lafayette, Indiana, United States
| | - Lyudmila V. Slipchenko
- Department of Chemistry, College of Science, Purdue University, West Lafayette, Indiana, United States
| | - Lynne S. Taylor
- Department of Industrial and Physical Pharmacy, College of Pharmacy, Purdue University, West Lafayette, Indiana, United States
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Shen JW, Li J, Zhao Z, Zhang L, Peng G, Liang L. Molecular dynamics study on the mechanism of polynucleotide encapsulation by chitosan. Sci Rep 2017; 7:5050. [PMID: 28698591 PMCID: PMC5506017 DOI: 10.1038/s41598-017-05197-0] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2017] [Accepted: 05/25/2017] [Indexed: 11/13/2022] Open
Abstract
The safe and effective delivery of therapeutic genes into target cell interiors is of great importance in gene therapy. Chitosan has been extensively studied as a gene delivery carrier due to its good biocompatibility and biodegradability. Understanding the atomic interaction mechanism between chitosan and DNA is important in the design and application of chitosan-based drug and gene delivery systems. In this work, the interactions between single-stranded polynucleotides and different types of chitosan were systematically investigated by using molecular dynamics (MD) simulation. Our results demonstrate that the functional groups of chitosan, the types of base and length of polynucleotides regulate the interaction behavior between chitosan and polynucleotides. The encapsulation capacity of polynucleotide by chitosan is mainly balanced by two factors: the strength of polynucleotide binding to chitosan and the tendency of self-aggregation of polynucleotide in the solution. For -NH3+ chitosan, due to the strong electrostatic interaction, especially the H-bond between -NH3+ groups in chitosan and phosphate groups in polynucleotide, the aggregation effect could be partially eliminated. The good dispersal capacity of polynucleotides may improve the encapsulation of polynucleotides by chitosan, and hence increase the delivery and transfection efficiency of chitosan-based gene carrier.
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Affiliation(s)
- Jia-Wei Shen
- School of Medicine, Hangzhou Normal University, Hangzhou, 310016, People's Republic of China.
| | - Jiachen Li
- Department of Chemistry, Key Laboratory of Advanced Textile Materials and Manufacturing Technology of Education Ministry, Zhejiang Sci-Tech University, Hangzhou, 310018, People's Republic of China
| | - Zhennan Zhao
- School of Medicine, Hangzhou Normal University, Hangzhou, 310016, People's Republic of China
| | - Li Zhang
- Department of Chemistry, Key Laboratory of Advanced Textile Materials and Manufacturing Technology of Education Ministry, Zhejiang Sci-Tech University, Hangzhou, 310018, People's Republic of China.
| | - Guoteng Peng
- Department of Chemistry, Key Laboratory of Advanced Textile Materials and Manufacturing Technology of Education Ministry, Zhejiang Sci-Tech University, Hangzhou, 310018, People's Republic of China
| | - Lijun Liang
- College of Life Information Science and Instrument Engineering, Hangzhou Dianzi University, Hangzhou, 310018, People's Republic of China.
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Mosquera-Giraldo LI, Borca CH, Meng X, Edgar KJ, Slipchenko LV, Taylor LS. Mechanistic Design of Chemically Diverse Polymers with Applications in Oral Drug Delivery. Biomacromolecules 2016; 17:3659-3671. [PMID: 27715018 DOI: 10.1021/acs.biomac.6b01156] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
Polymers play a key role in stabilizing amorphous drug formulations, a recent strategy employed to improve solubility and bioavailability of drugs delivered orally. However, the molecular mechanism of stabilization is unclear, therefore, the rational design of new crystallization-inhibiting excipients remains a substantial challenge. This article presents a combined experimental and computational approach to elucidate the molecular features that improve the effectiveness of cellulose polymers as solution crystallization inhibitors, a crucial first step toward their rational design. Polymers with chemically diverse substituents including carboxylic acids, esters, ethers, alcohols, amides, amines, and sulfides were synthesized. Measurements of nucleation induction times of the model drug, telaprevir, show that the only effective polymers contained carboxylate groups in combination with an optimal hydrocarbon chain length. Computational results indicate that polymer conformation as well as solvation free energy are important determinants of effectiveness at inhibiting crystallization and show that simulations are a promising predictive tool in the screening of polymers. This study suggests that polymers need to have an adequate hydrophilicity to promote solvation in an aqueous environment, and sufficient hydrophobic regions to drive interactions with the drug. Particularly, the right balance between key substituent groups and lengths of hydrocarbon side chains is needed to create effective materials.
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Affiliation(s)
- Laura I Mosquera-Giraldo
- Department of Industrial and Physical Pharmacy, College of Pharmacy, Purdue University , West Lafayette, Indiana, United States
| | - Carlos H Borca
- Department of Chemistry, College of Science, Purdue University , West Lafayette, Indiana, United States
| | - Xiangtao Meng
- Department of Sustainable Biomaterials, College of Natural Resources and Environment, Virginia Tech , Blacksburg, Virginia, United States
| | - Kevin J Edgar
- Department of Sustainable Biomaterials, College of Natural Resources and Environment, Virginia Tech , Blacksburg, Virginia, United States
| | - Lyudmila V Slipchenko
- Department of Chemistry, College of Science, Purdue University , West Lafayette, Indiana, United States
| | - Lynne S Taylor
- Department of Industrial and Physical Pharmacy, College of Pharmacy, Purdue University , West Lafayette, Indiana, United States
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