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Liu J, Wang X, Li X, Ni C, Liu L, Bányai I, Shi X, Song C. Structural and Property Characterizations of Dual-Responsive Core-Shell Tecto Dendrimers for Tumor Penetration and Gene Delivery Applications. Macromol Rapid Commun 2024:e2400251. [PMID: 38813898 DOI: 10.1002/marc.202400251] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2024] [Revised: 05/23/2024] [Indexed: 05/31/2024]
Abstract
Core-shell tecto dendrimers (CSTDs) with excellent physicochemical properties and good tumor penetration and gene transfection efficiency have been demonstrated to have the potential to replace high-generation dendrimers in biomedical applications. However, their characterization and related biological properties of CSTDs for enhanced tumor penetration and gene delivery still lack in-depth investigation. Herein, three types of dual-responsive CSTDs are designed for thorough physicochemical characterization and investigation of their tumor penetration and gene delivery efficiency. Three types of CSTDs are prepared through phenylborate ester bonds of phenylboronic acid (PBA)-decorated generation 5 (G5) poly(amidoamine) (PAMAM) dendrimers as cores and monose (galactose, glucose, or mannose)-conjugated G3 PAMAM dendrimers as shells and thoroughly characterized via NMR and other techniques. It is shown that the produced CSTDs display strong correlation signals between the PBA and monose protons, similar hydrodynamic diameters, and dual reactive oxygen species- and pH-responsivenesses. The dual-responsive CSTDs are proven to have structure-dependent tumor penetration property and gene delivery efficiency in terms of small interference RNA for gene silencing and plasmid DNA for gene editing, thus revealing a great potential for different biomedical applications.
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Affiliation(s)
- Junjie Liu
- Medical Science and Technology Innovation Center, Shandong First Medical University, Jinan, Shandong, 250117, P. R. China
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, Shanghai Engineering Research Center of Nano-Biomaterials and Regenerative Medicine, College of Biological Science and Medical Engineering, Donghua University, Shanghai, 201620, P. R. China
| | - Xiaoyu Wang
- Medical Science and Technology Innovation Center, Shandong First Medical University, Jinan, Shandong, 250117, P. R. China
| | - Xiaolei Li
- Medical Science and Technology Innovation Center, Shandong First Medical University, Jinan, Shandong, 250117, P. R. China
| | - Cheng Ni
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, Shanghai Engineering Research Center of Nano-Biomaterials and Regenerative Medicine, College of Biological Science and Medical Engineering, Donghua University, Shanghai, 201620, P. R. China
| | - Lei Liu
- Center for Advanced Low-dimension Materials, Donghua University, Shanghai, 201620, P. R. China
| | - István Bányai
- Department of Physical Chemistry, University of Debrecen, Debrecen, H-4032, Hungary
| | - Xiangyang Shi
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, Shanghai Engineering Research Center of Nano-Biomaterials and Regenerative Medicine, College of Biological Science and Medical Engineering, Donghua University, Shanghai, 201620, P. R. China
| | - Cong Song
- Medical Science and Technology Innovation Center, Shandong First Medical University, Jinan, Shandong, 250117, P. R. China
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Pitawela N, Shaw SK. Imidazolium Triflate Ionic Liquids' Capacitance-Potential Relationships and Transport Properties Affected by Cation Chain Lengths. ACS MEASUREMENT SCIENCE AU 2021; 1:117-130. [PMID: 36785553 PMCID: PMC9885949 DOI: 10.1021/acsmeasuresciau.1c00015] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/14/2023]
Abstract
In this paper we report the effects of five imidazolium cations with varying alkyl chain lengths to study the effects of cation size on capacitance versus voltage behavior. The cations include ethyl-, butyl-, hexyl-, octyl-, and decyl-3-methylimidazolium, all paired with a triflate anion. We analyze the capacitance with respect to the cation alkyl chain length qualitatively and quantitatively by analyzing changes in the capacitance-potential curvature shape and magnitude across several standard scanning protocols and electrochemical techniques. Further, three transport properties (viscosity, diffusion coefficient, and electrical conductivity) are experimentally determined and integrated into the outcomes. Ultimately, we find higher viscosities, lower diffusion coefficients, and lower electrical conductivities when the alkyl chain length is increased. Also, capacitance values increase with cation size, except 1-octyl-3-methylimidazolium, which does not follow an otherwise linear trend. This capacitive increase is most pronounced when sweeping the potential in the cathodic direction. These findings challenge the conventional hypothesis that increasing the length of the alkyl chain of imidazolium cations diminishes the capacitance and ionic liquid performance in charge storage.
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Affiliation(s)
- Niroodha
R. Pitawela
- Department of Chemistry, University
of Iowa, Iowa City, Iowa 52242, United States
| | - Scott K. Shaw
- Department of Chemistry, University
of Iowa, Iowa City, Iowa 52242, United States
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Yang H, Liang J, Lin C, Zhu Y, Yan J, Zhang W, Pang J, Yang W, Yang F, Wang L. Effect of Dihydropyridine Enrichment in the Microstructure of the Palisade Layer on the Stability of Fat Nano-emulsions. J Pharm Sci 2021; 110:3648-3658. [PMID: 34303675 DOI: 10.1016/j.xphs.2021.07.013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2021] [Revised: 07/20/2021] [Accepted: 07/20/2021] [Indexed: 12/08/2022]
Abstract
Relationship between the stability of fat nano-emulsions and the incorporated drug at the molecular level are rarely known. Herein, fat nano-emulsions containing dihydropyridine drugs were prepared and the microstructure of their palisade layers were investigated.The prepared 1.0 mg/mL nimodipine nano-emulsion was found to contain 65.50% drug in the palisade layer. The increasing drug concentration led to a decrease-increase-decrease trend in centrifugal stability constant, particle size and proton nuclear magnetic resonance (1H NMR) signal intensity of the lecithin trimethyl ammonium group in the nimodipine and felodipine nano-emulsions. The 1H NMR spectra of test solutions including nano-emulsions suggest that increasing drugs penetrated into the palisade layer, resulting in the lecithin arrangement from loose to tight, and then from monolayer to bilayer. Nimodipine and felodipine nano-emulsions showed two valley values at concentrations of 0.15 and 0.75 mg/mL, and 0.30 and 0.90 mg/mL respectively, which indicated that the nano-emulsion has two more stable states corresponding to the tightly arranged mono- and bi-palisade layer. These two concentrations are positively correlated with lipophilicity of nimodipine and felodipine. Further, nimodipine liposomes were prepared to validate the effect of drugs on the arrangement of lecithin in the palisade layer. 1H NMR characterizations of the liposomes showed a similar profile to that of nano-emulsions. These results demonstrated that the increasing drug concentration could cause a rearrangement of lecithin in the palisade layer, thus affecting emulsion stability.
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Affiliation(s)
- Haonan Yang
- School of Pharmacy, Guangdong Pharmaceutical University, Guangzhou 510006, Guangdong, China
| | - Jiawei Liang
- The Center for Drug Research and Development, Guangdong Pharmaceutical University, Guangzhou 510006, Guangdong, China
| | - Cuicui Lin
- The Center for Drug Research and Development, Guangdong Pharmaceutical University, Guangzhou 510006, Guangdong, China
| | - Yu Zhu
- The Center for Drug Research and Development, Guangdong Pharmaceutical University, Guangzhou 510006, Guangdong, China
| | - Jiaqi Yan
- The Center for Drug Research and Development, Guangdong Pharmaceutical University, Guangzhou 510006, Guangdong, China
| | - Wenfang Zhang
- The Center for Drug Research and Development, Guangdong Pharmaceutical University, Guangzhou 510006, Guangdong, China
| | - Jiali Pang
- The Center for Drug Research and Development, Guangdong Pharmaceutical University, Guangzhou 510006, Guangdong, China
| | - Wei Yang
- The Center for Drug Research and Development, Guangdong Pharmaceutical University, Guangzhou 510006, Guangdong, China; Guangdong Provincial Engineering Center of Topical Precise Drug Delivery System, Department of Pharmaceutics, Guangdong Pharmaceutical University, Guangzhou 510006, Guangdong, China.
| | - Fan Yang
- The Center for Drug Research and Development, Guangdong Pharmaceutical University, Guangzhou 510006, Guangdong, China; Guangdong Provincial Key Laboratory of Advanced Drug Delivery Systems, Guangdong Pharmaceutical University, Guangzhou 510006, Guangdong, China; Guangdong Provincial Engineering Center of Topical Precise Drug Delivery System, Department of Pharmaceutics, Guangdong Pharmaceutical University, Guangzhou 510006, Guangdong, China.
| | - Laiyou Wang
- School of Pharmacy, Guangdong Pharmaceutical University, Guangzhou 510006, Guangdong, China; Department of Clinical Pharmacy, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou 510080,Guangdong, China.
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Song C, Gao Y, Chen J, Wang L, Bányai I, Shen M, Shi X. Physicochemical aspects of zwitterionic core-shell tecto dendrimers characterized by a thorough NMR investigation. Colloids Surf A Physicochem Eng Asp 2021. [DOI: 10.1016/j.colsurfa.2021.126466] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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