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Lin YN, Khan S, Song Y, Dong M, Shen Y, Tran DK, Pang C, Zhang F, Wooley KL. A Tale of Drug-Carrier Optimization: Controlling Stimuli Sensitivity via Nanoparticle Hydrophobicity through Drug Loading. NANO LETTERS 2020; 20:6563-6571. [PMID: 32787153 DOI: 10.1021/acs.nanolett.0c02319] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
Interactions between drug molecules, nanocarrier components, and surrounding media influence the properties and therapeutic efficacies of nanomedicines. In this study, we investigate the role that reversible covalent loading of a hydrophobic drug exerts on intra-nanoparticle physical properties and explore the utility of this payload control strategy for tuning the access of active agents and, thereby, the stimuli sensitivity of smart nanomaterials. Glutathione sensitivity was controlled via altering the degree of hydrophobic payload loading of disulfide-linked camptothecin-conjugated sugar-based nanomaterials. Increases in degrees of camptothecin conjugation (fCPT) decreased aqueous accessibility and reduced glutathione-triggered release. Although the lowest fCPT gave the fastest camptothecin release, it resulted in the lowest camptothecin concentration. Remarkably, the highest fCPT resulted in a 5.5-fold improved selectivity against cancer vs noncancerous cells. This work represents an advancement in drug carrier design by demonstrating the importance of controlling the amount of drug loading on the overall payload and its availability.
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Affiliation(s)
- Yen-Nan Lin
- Departments of Chemistry, Chemical Engineering, and Materials Science & Engineering, Laboratory for Synthetic-Biologic Interactions, Texas A&M University, College Station, Texas 77842, United States
- College of Medicine, Texas A&M University, Bryan, Texas 77807, United States
| | - Sarosh Khan
- Departments of Chemistry, Chemical Engineering, and Materials Science & Engineering, Laboratory for Synthetic-Biologic Interactions, Texas A&M University, College Station, Texas 77842, United States
| | - Yue Song
- Departments of Chemistry, Chemical Engineering, and Materials Science & Engineering, Laboratory for Synthetic-Biologic Interactions, Texas A&M University, College Station, Texas 77842, United States
| | - Mei Dong
- Departments of Chemistry, Chemical Engineering, and Materials Science & Engineering, Laboratory for Synthetic-Biologic Interactions, Texas A&M University, College Station, Texas 77842, United States
| | - Yidan Shen
- Departments of Chemistry, Chemical Engineering, and Materials Science & Engineering, Laboratory for Synthetic-Biologic Interactions, Texas A&M University, College Station, Texas 77842, United States
| | - David K Tran
- Departments of Chemistry, Chemical Engineering, and Materials Science & Engineering, Laboratory for Synthetic-Biologic Interactions, Texas A&M University, College Station, Texas 77842, United States
| | - Ching Pang
- Departments of Chemistry, Chemical Engineering, and Materials Science & Engineering, Laboratory for Synthetic-Biologic Interactions, Texas A&M University, College Station, Texas 77842, United States
| | - Fuwu Zhang
- Departments of Chemistry, Chemical Engineering, and Materials Science & Engineering, Laboratory for Synthetic-Biologic Interactions, Texas A&M University, College Station, Texas 77842, United States
| | - Karen L Wooley
- Departments of Chemistry, Chemical Engineering, and Materials Science & Engineering, Laboratory for Synthetic-Biologic Interactions, Texas A&M University, College Station, Texas 77842, United States
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Dong M, Wessels MG, Lee JY, Su L, Wang H, Letteri RA, Song Y, Lin YN, Chen Y, Li R, Pochan DJ, Jayaraman A, Wooley KL. Experiments and Simulations of Complex Sugar-Based Coil-Brush Block Polymer Nanoassemblies in Aqueous Solution. ACS NANO 2019; 13:5147-5162. [PMID: 30990651 DOI: 10.1021/acsnano.8b08811] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
In this work, we investigated the fundamental molecular parameters that guide the supramolecular assembly of glucose-based amphiphilic coil-brush block polymers in aqueous solution and elucidated architecture-morphology relationships through experimental and simulation tools. Well-defined coil-brush polymers were synthesized through ring-opening polymerizations (ROP) of glucose carbonates to afford norbornenyl-functionalized poly(glucose carbonate) (NB-PGC) macromonomers, followed by sequential ring-opening metathesis polymerizations (ROMP) of norbornene N-hydroxysuccinimidyl (NHS) esters and the NB-PGC macromonomers. Variation of the macromonomer length and grafting through ROMP conditions allowed for a series of coil-brush polymers to be synthesized with differences in the brush and coil dimensions, independently, where the side chain graft length and brush backbone were used to tune the brush, and the coil block length was used to vary the coil. Hydrolysis of the NHS moieties gave the amphiphilic coil-brush polymers, where the hydrophilic-hydrophobic ratios were dependent on the brush and coil relative dimensions. Experimental assembly in solution was studied and found to yield a variety of structurally dependent nanostructures. Simulations were conducted on the solution assembly of coil-brush polymers, where the polymers were represented by a coarse-grained model and the solvent was represented implicitly. There is qualitative agreement in the phase diagrams obtained from simulations and experiments, in terms of the morphologies of the assembled nanoscopic structures achieved as a function of coil-brush design parameters ( e.g., brush and coil lengths, composition). The simulations further showed the chain conformations adopted by the coil-brush polymers and the packing within these assembled nanoscopic structures. This work enables the predictive design of nanostructures from this glucose-based coil-brush polymer platform while providing a fundamental understanding of interactions within solution assembly of complex polymer building blocks.
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Affiliation(s)
- Mei Dong
- Departments of Chemistry, Chemical Engineering, Materials Science & Engineering, and the Laboratory for Synthetic-Biologic Interactions , Texas A&M University , College Station , Texas 77843 , United States
| | - Michiel G Wessels
- Department of Chemical & Biomolecular Engineering, Colburn Laboratory , University of Delaware , Newark , Delaware 19716 , United States
| | - Jee Young Lee
- Department of Materials Science and Engineering , University of Delaware , Newark , Delaware 19716 , United States
| | - Lu Su
- Departments of Chemistry, Chemical Engineering, Materials Science & Engineering, and the Laboratory for Synthetic-Biologic Interactions , Texas A&M University , College Station , Texas 77843 , United States
| | - Hai Wang
- Departments of Chemistry, Chemical Engineering, Materials Science & Engineering, and the Laboratory for Synthetic-Biologic Interactions , Texas A&M University , College Station , Texas 77843 , United States
| | - Rachel A Letteri
- Departments of Chemistry, Chemical Engineering, Materials Science & Engineering, and the Laboratory for Synthetic-Biologic Interactions , Texas A&M University , College Station , Texas 77843 , United States
| | - Yue Song
- Departments of Chemistry, Chemical Engineering, Materials Science & Engineering, and the Laboratory for Synthetic-Biologic Interactions , Texas A&M University , College Station , Texas 77843 , United States
| | - Yen-Nan Lin
- Departments of Chemistry, Chemical Engineering, Materials Science & Engineering, and the Laboratory for Synthetic-Biologic Interactions , Texas A&M University , College Station , Texas 77843 , United States
- College of Medicine , Texas A&M University , Bryan , Texas 77807 , United States
| | - Yingchao Chen
- Departments of Chemistry, Chemical Engineering, Materials Science & Engineering, and the Laboratory for Synthetic-Biologic Interactions , Texas A&M University , College Station , Texas 77843 , United States
| | - Richen Li
- Departments of Chemistry, Chemical Engineering, Materials Science & Engineering, and the Laboratory for Synthetic-Biologic Interactions , Texas A&M University , College Station , Texas 77843 , United States
| | - Darrin J Pochan
- Department of Materials Science and Engineering , University of Delaware , Newark , Delaware 19716 , United States
| | - Arthi Jayaraman
- Department of Chemical & Biomolecular Engineering, Colburn Laboratory , University of Delaware , Newark , Delaware 19716 , United States
- Department of Materials Science and Engineering , University of Delaware , Newark , Delaware 19716 , United States
| | - Karen L Wooley
- Departments of Chemistry, Chemical Engineering, Materials Science & Engineering, and the Laboratory for Synthetic-Biologic Interactions , Texas A&M University , College Station , Texas 77843 , United States
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