51
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Synthesis of acid-degradable hyperbranched poly(resveratrol- co -ketal)- b -mPEG nanoparticles. J Control Release 2015; 213:e12. [DOI: 10.1016/j.jconrel.2015.05.016] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
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52
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Rozema DB, Blokhin AV, Wakefield DH, Benson JD, Carlson JC, Klein JJ, Almeida LJ, Nicholas AL, Hamilton HL, Chu Q, Hegge JO, Wong SC, Trubetskoy VS, Hagen CM, Kitas E, Wolff JA, Lewis DL. Protease-triggered siRNA delivery vehicles. J Control Release 2015; 209:57-66. [PMID: 25886706 DOI: 10.1016/j.jconrel.2015.04.012] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2015] [Revised: 04/05/2015] [Accepted: 04/11/2015] [Indexed: 11/28/2022]
Abstract
The safe and efficacious delivery of membrane impermeable therapeutics requires cytoplasmic access without the toxicity of nonspecific cytoplasmic membrane lysis. We have developed a mechanism for control of cytoplasmic release which utilizes endogenous proteases as a trigger and results in functional delivery of small interfering RNA (siRNA). The delivery approach is based on reversible inhibition of membrane disruptive polymers with protease-sensitive substrates. Proteolytic hydrolysis upon endocytosis restores the membrane destabilizing activity of the polymers thereby allowing cytoplasmic access of the co-delivered siRNA. Protease-sensitive polymer masking reagents derived from polyethylene glycol (PEG), which inhibit membrane interactions, and N-acetylgalactosamine, which targets asialoglycoprotein receptors on hepatocytes, were synthesized and used to formulate masked polymer-siRNA delivery vehicles. The size, charge and stability of the vehicles enable functional delivery of siRNA after subcutaneous administration and, with modification of the targeting ligand, have the potential for extrahepatic targeting.
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Affiliation(s)
- David B Rozema
- Arrowhead Research Corporation, Arrowhead Madison, 465 Science Drive, Madison, WI 53711, USA.
| | - Andrei V Blokhin
- Arrowhead Research Corporation, Arrowhead Madison, 465 Science Drive, Madison, WI 53711, USA
| | - Darren H Wakefield
- Arrowhead Research Corporation, Arrowhead Madison, 465 Science Drive, Madison, WI 53711, USA
| | - Jonathan D Benson
- Arrowhead Research Corporation, Arrowhead Madison, 465 Science Drive, Madison, WI 53711, USA
| | - Jeffrey C Carlson
- Arrowhead Research Corporation, Arrowhead Madison, 465 Science Drive, Madison, WI 53711, USA
| | - Jason J Klein
- Arrowhead Research Corporation, Arrowhead Madison, 465 Science Drive, Madison, WI 53711, USA
| | - Lauren J Almeida
- Arrowhead Research Corporation, Arrowhead Madison, 465 Science Drive, Madison, WI 53711, USA
| | - Anthony L Nicholas
- Arrowhead Research Corporation, Arrowhead Madison, 465 Science Drive, Madison, WI 53711, USA
| | - Holly L Hamilton
- Arrowhead Research Corporation, Arrowhead Madison, 465 Science Drive, Madison, WI 53711, USA
| | - Qili Chu
- Arrowhead Research Corporation, Arrowhead Madison, 465 Science Drive, Madison, WI 53711, USA
| | - Julia O Hegge
- Arrowhead Research Corporation, Arrowhead Madison, 465 Science Drive, Madison, WI 53711, USA
| | - So C Wong
- Arrowhead Research Corporation, Arrowhead Madison, 465 Science Drive, Madison, WI 53711, USA
| | - Vladimir S Trubetskoy
- Arrowhead Research Corporation, Arrowhead Madison, 465 Science Drive, Madison, WI 53711, USA
| | - Collin M Hagen
- Arrowhead Research Corporation, Arrowhead Madison, 465 Science Drive, Madison, WI 53711, USA
| | - Eric Kitas
- F. Hoffmann-La Roche Ltd., Pharma Research and Early Development Discovery Chemistry, Roche Innovation Center Basel, Grenzacherstrasse 124, CH-4070 Basel, Switzerland
| | - Jon A Wolff
- Arrowhead Research Corporation, Arrowhead Madison, 465 Science Drive, Madison, WI 53711, USA
| | - David L Lewis
- Arrowhead Research Corporation, Arrowhead Madison, 465 Science Drive, Madison, WI 53711, USA
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53
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Zhao D, Li B, Han J, Yang Y, Zhang X, Wu G. PH responsive polypeptide based polymeric micelles for anticancer drug delivery. J Biomed Mater Res A 2015; 103:3045-53. [DOI: 10.1002/jbm.a.35434] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2014] [Revised: 02/06/2015] [Accepted: 02/11/2015] [Indexed: 01/14/2023]
Affiliation(s)
- Dongping Zhao
- Key Laboratory of Functional Polymer Materials of MOE, Institute of Polymers, Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Nankai University; Tianjin 300071 China
| | - Bingqiang Li
- Key Laboratory of Functional Polymer Materials of MOE, Institute of Polymers, Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Nankai University; Tianjin 300071 China
| | - Jiaming Han
- Key Laboratory of Functional Polymer Materials of MOE, Institute of Polymers, Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Nankai University; Tianjin 300071 China
| | - Yue Yang
- Key Laboratory of Functional Polymer Materials of MOE, Institute of Polymers, Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Nankai University; Tianjin 300071 China
| | - Xinchen Zhang
- Key Laboratory of Functional Polymer Materials of MOE, Institute of Polymers, Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Nankai University; Tianjin 300071 China
| | - Guolin Wu
- Key Laboratory of Functional Polymer Materials of MOE, Institute of Polymers, Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Nankai University; Tianjin 300071 China
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54
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Cheng T, Ma R, Zhang Y, Ding Y, Liu J, Ou H, An Y, Liu J, Shi L. A surface-adaptive nanocarrier to prolong circulation time and enhance cellular uptake. Chem Commun (Camb) 2015; 51:14985-8. [DOI: 10.1039/c5cc05854f] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Mixed-shell micelles (MSMs) with adaptive surfaces could rapidly and reversibly change surface properties to prolong circulation time and enhance cellular uptake.
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Affiliation(s)
- Tangjian Cheng
- State Key Laboratory of Medicinal Chemical Biology
- Key Laboratory of Functional Polymer Materials
- Ministry of Education
- Institute of Polymer Chemistry
- Collaborative Innovation Center of Chemical Science and Engineering (Tianjin)
| | - Rujiang Ma
- State Key Laboratory of Medicinal Chemical Biology
- Key Laboratory of Functional Polymer Materials
- Ministry of Education
- Institute of Polymer Chemistry
- Collaborative Innovation Center of Chemical Science and Engineering (Tianjin)
| | - Yumin Zhang
- Tianjin Key Laboratory of Radiation Medicine and Molecular Nuclear Medicine
- Institute of Radiation Medicine
- Chinese Academy of Medical Science & Peking Union Medical College
- Tianjin
- P. R. China
| | - Yuxun Ding
- State Key Laboratory of Medicinal Chemical Biology
- Key Laboratory of Functional Polymer Materials
- Ministry of Education
- Institute of Polymer Chemistry
- Collaborative Innovation Center of Chemical Science and Engineering (Tianjin)
| | - Jinjian Liu
- Tianjin Key Laboratory of Radiation Medicine and Molecular Nuclear Medicine
- Institute of Radiation Medicine
- Chinese Academy of Medical Science & Peking Union Medical College
- Tianjin
- P. R. China
| | - Hanlin Ou
- State Key Laboratory of Medicinal Chemical Biology
- Key Laboratory of Functional Polymer Materials
- Ministry of Education
- Institute of Polymer Chemistry
- Collaborative Innovation Center of Chemical Science and Engineering (Tianjin)
| | - Yingli An
- State Key Laboratory of Medicinal Chemical Biology
- Key Laboratory of Functional Polymer Materials
- Ministry of Education
- Institute of Polymer Chemistry
- Collaborative Innovation Center of Chemical Science and Engineering (Tianjin)
| | - Jianfeng Liu
- Tianjin Key Laboratory of Radiation Medicine and Molecular Nuclear Medicine
- Institute of Radiation Medicine
- Chinese Academy of Medical Science & Peking Union Medical College
- Tianjin
- P. R. China
| | - Linqi Shi
- State Key Laboratory of Medicinal Chemical Biology
- Key Laboratory of Functional Polymer Materials
- Ministry of Education
- Institute of Polymer Chemistry
- Collaborative Innovation Center of Chemical Science and Engineering (Tianjin)
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55
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Gao H, Cheng T, Liu J, Liu J, Yang C, Chu L, Zhang Y, Ma R, Shi L. Self-regulated multifunctional collaboration of targeted nanocarriers for enhanced tumor therapy. Biomacromolecules 2014; 15:3634-42. [PMID: 25308336 DOI: 10.1021/bm5009348] [Citation(s) in RCA: 45] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Exploring ideal nanocarriers for drug delivery systems has encountered unavoidable hurdles, especially the conflict between enhanced cellular uptake and prolonged blood circulation, which have determined the final efficacy of cancer therapy. Here, based on controlled self-assembly, surface structure variation in response to external environment was constructed toward overcoming the conflict. A novel micelle with mixed shell of hydrophilic poly(ethylene glycol) PEG and pH responsive hydrophobic poly(β-amino ester) (PAE) was designed through the self-assembly of diblock amphiphilic copolymers. To avoid the accelerated clearance from blood circulation caused by the surface exposed targeting group c(RGDfK), here c(RGDfK) was conjugated to the hydrophobic PAE and hidden in the shell of PEG at pH 7.4. At tumor pH, charge conversion occurred, and c(RGDfK) stretched out of the shell, leading to facilitated cellular internalization according to the HepG2 cell uptake experiments. Meanwhile, the heterogeneous surface structure endowed the micelle with prolonged blood circulation. With the self-regulated multifunctional collaborated properties of enhanced cellular uptake and prolonged blood circulation, successful inhibition of tumor growth was achieved from the demonstration in a tumor-bearing mice model. This novel nanocarrier could be a promising candidate in future clinical experiments.
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Affiliation(s)
- Hongjun Gao
- State Key Laboratory of Medicinal Chemical Biology, Key Laboratory of Functional Polymer Materials, Ministry of Education, Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Institute of Polymer Chemistry, Nankai University , Tianjin 300071, People's Republic of China
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56
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Kajimoto K, Sato Y, Nakamura T, Yamada Y, Harashima H. Multifunctional envelope-type nano device for controlled intracellular trafficking and selective targeting in vivo. J Control Release 2014; 190:593-606. [DOI: 10.1016/j.jconrel.2014.03.058] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2014] [Revised: 03/11/2014] [Accepted: 03/21/2014] [Indexed: 12/13/2022]
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57
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Wang Y, Shim MS, Levinson NS, Sung HW, Xia Y. Stimuli-Responsive Materials for Controlled Release of Theranostic Agents. ADVANCED FUNCTIONAL MATERIALS 2014; 24:4206-4220. [PMID: 25477774 PMCID: PMC4249693 DOI: 10.1002/adfm.201400279] [Citation(s) in RCA: 237] [Impact Index Per Article: 23.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/17/2023]
Abstract
Stimuli-responsive materials are so named because they can alter their physicochemical properties and/or structural conformations in response to specific stimuli. The stimuli can be internal, such as physiological or pathological variations in the target cells/tissues, or external, such as optical and ultrasound radiations. In recent years, these materials have gained increasing interest in biomedical applications due to their potential for spatially and temporally controlled release of theranostic agents in response to the specific stimuli. This article highlights several recent advances in the development of such materials, with a focus on their molecular designs and formulations. The future of stimuli-responsive materials will also be explored, including combination with molecular imaging probes and targeting moieties, which could enable simultaneous diagnosis and treatment of a specific disease, as well as multi-functionality and responsiveness to multiple stimuli, all important in overcoming intrinsic biological barriers and increasing clinical viability.
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Affiliation(s)
| | | | - Nathanael S. Levinson
- The Wallace H. Coulter Department of Biomedical Engineering, School of Chemistry and Biochemistry, Georgia Institute of Technology, Atlanta, GA 30332, USA
| | - Hsing-Wen Sung
- Department of Chemical Engineering and Institute of Biomedical Engineering, National Tsing Hua University, Hsinchu 30013, Taiwan, Republic of China
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58
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Kang S, Kim Y, Song Y, Choi JU, Park E, Choi W, Park J, Lee Y. Comparison of pH-sensitive degradability of maleic acid amide derivatives. Bioorg Med Chem Lett 2014; 24:2364-7. [DOI: 10.1016/j.bmcl.2014.03.057] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2013] [Revised: 03/17/2014] [Accepted: 03/18/2014] [Indexed: 11/25/2022]
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59
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Leus NGJ, Morselt HWM, Zwiers PJ, Kowalski PS, Ruiters MHJ, Molema G, Kamps JAAM. VCAM-1 specific PEGylated SAINT-based lipoplexes deliver siRNA to activated endothelium in vivo but do not attenuate target gene expression. Int J Pharm 2014; 469:121-31. [PMID: 24746643 DOI: 10.1016/j.ijpharm.2014.04.041] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2014] [Revised: 04/15/2014] [Accepted: 04/16/2014] [Indexed: 02/01/2023]
Abstract
In recent years much research in RNA nanotechnology has been directed to develop an efficient and clinically suitable delivery system for short interfering RNA (siRNA). The current study describes the in vivo siRNA delivery using PEGylated antibody-targeted SAINT-based-lipoplexes (referred to as antibody-SAINTPEGarg/PEG2%), which showed superior siRNA delivery capacity and effective down-regulation of VE-cadherin gene expression in vitro in inflammation-activated primary endothelial cells of different vascular origins. PEGylation of antibody-SAINTPEGarg resulted in more desirable pharmacokinetic behavior than that of non-PEGylated antibody-SAINTPEGarg. To create specificity for inflammation-activated endothelial cells, antibodies against vascular cell adhesion molecule-1 (VCAM-1) were employed. In TNFα-challenged mice, these intravenously administered anti-VCAM-1-SAINTPEGarg/PEG2% homed to VCAM-1 protein expressing vasculature. Confocal laser scanning microscopy revealed that anti-VCAM-1-SAINTPEGarg/PEG2% co-localized with endothelial cells in lung postcapillary venules. Furthermore, they did not exert any liver and kidney toxicity. Yet, lack of in vivo gene silencing as assessed in whole lung and in laser microdissected lung microvascular segments indicates that in vivo internalization and/or intracellular trafficking of the delivery system and its cargo in the target cells are not sufficient, and needs further attention, emphasizing the essence of evaluating siRNA delivery systems in an appropriate in vivo animal model at an early stage in their development.
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Affiliation(s)
- Niek G J Leus
- University of Groningen, University Medical Center Groningen, Department of Pathology & Medical Biology, Medical Biology section, Laboratory for Endothelial Biomedicine & Vascular Drug Targeting Research, Groningen, the Netherlands
| | - Henriëtte W M Morselt
- University of Groningen, University Medical Center Groningen, Department of Pathology & Medical Biology, Medical Biology section, Laboratory for Endothelial Biomedicine & Vascular Drug Targeting Research, Groningen, the Netherlands
| | - Peter J Zwiers
- University of Groningen, University Medical Center Groningen, Department of Pathology & Medical Biology, Medical Biology section, Laboratory for Endothelial Biomedicine & Vascular Drug Targeting Research, Groningen, the Netherlands
| | - Piotr S Kowalski
- University of Groningen, University Medical Center Groningen, Department of Pathology & Medical Biology, Medical Biology section, Laboratory for Endothelial Biomedicine & Vascular Drug Targeting Research, Groningen, the Netherlands
| | - Marcel H J Ruiters
- University of Groningen, University Medical Center Groningen, Department of Pathology & Medical Biology, Medical Biology section, Laboratory for Endothelial Biomedicine & Vascular Drug Targeting Research, Groningen, the Netherlands; Synvolux Therapeutics, Groningen, the Netherlands
| | - Grietje Molema
- University of Groningen, University Medical Center Groningen, Department of Pathology & Medical Biology, Medical Biology section, Laboratory for Endothelial Biomedicine & Vascular Drug Targeting Research, Groningen, the Netherlands
| | - Jan A A M Kamps
- University of Groningen, University Medical Center Groningen, Department of Pathology & Medical Biology, Medical Biology section, Laboratory for Endothelial Biomedicine & Vascular Drug Targeting Research, Groningen, the Netherlands.
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60
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Wang J, Gong C, Wang Y, Wu G. Magnetic nanoparticles with a pH-sheddable layer for antitumor drug delivery. Colloids Surf B Biointerfaces 2014; 118:218-25. [PMID: 24768265 DOI: 10.1016/j.colsurfb.2014.04.001] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2013] [Revised: 04/01/2014] [Accepted: 04/01/2014] [Indexed: 11/15/2022]
Abstract
A dually responsive nanocarrier with a multilayer core-shell architecture was prepared based on Fe3O4@SiO2 nanoparticles successively coated with poly(benzyl L-aspartate) (PBLA) and poly(ethylene glycol) (PEG) for the purpose of tumor specific drug delivery applications. In this system, PEG chains are connected to the surface via pH-sensitive benzoic-imine bonds and serve as a pH-sheddable hydrophilic corona. Meanwhile, the PBLA segments serve as a hydrophobic middle layer used to load the drugs via hydrophobic interactions. The Fe3O4@SiO2 nanoparticle functions as a superparamagnetic core used to direct the drug loaded nanocarrier to the target pathological site. The obtained materials were characterized with FT-IR, (1)H NMR, dynamic light scattering, zeta-potential, TEM, TGA, and hysteresis loop analysis. An anticancer drug doxorubicin (DOX) was selected as the model drug loaded into the nanocarrier, which was relatively stable under physiological conditions due to its neutral hydrophilic shell, and could quickly release the drug in response to increased acidity via shedding of the PEG shells through cleavage of the intermediate benzoic-imine bonds. Meanwhile, the neutral shell shedding would reveal a positively charged nanoparticle surface that is readily taken up by tumor cells. These pH- and magnetic-responsive nanoparticles showed significant potential for use in the targeted intracellular delivery of hydrophobic chemotherapeutics in cancer therapy.
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Affiliation(s)
- Jingjing Wang
- Key Laboratory of Functional Polymer Materials, Institute of Polymer Chemistry, Nankai University, Tianjin 300071, China
| | - Chu Gong
- Key Laboratory of Functional Polymer Materials, Institute of Polymer Chemistry, Nankai University, Tianjin 300071, China
| | - Yinong Wang
- Key Laboratory of Functional Polymer Materials, Institute of Polymer Chemistry, Nankai University, Tianjin 300071, China
| | - Guolin Wu
- Key Laboratory of Functional Polymer Materials, Institute of Polymer Chemistry, Nankai University, Tianjin 300071, China; Collaborative Innovation Center of Chemical Science and Engineering, Tianjin, China.
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61
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d'Arcy R, Tirelli N. Fishing for fire: strategies for biological targeting and criteria for material design in anti-inflammatory therapies. POLYM ADVAN TECHNOL 2014. [DOI: 10.1002/pat.3264] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Richard d'Arcy
- School of Medicine/Institute of Inflammation and Repair; University of Manchester; Manchester M13 9PT UK
| | - Nicola Tirelli
- School of Medicine/Institute of Inflammation and Repair; University of Manchester; Manchester M13 9PT UK
- School of Materials; University of Manchester; Manchester M13 9PT UK
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62
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Wang J, Gong C, Wang Y, Wu G. Magnetic and pH sensitive drug delivery system through NCA chemistry for tumor targeting. RSC Adv 2014. [DOI: 10.1039/c4ra00660g] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Magnetic- and pH- dually sensitive drug delivery system.
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Affiliation(s)
- Jingjing Wang
- Key Laboratory of Functional Polymer Materials of MOE
- Institute of Polymer Chemistry
- Nankai University
- Tianjin 300071, PR China
| | - Chu Gong
- Key Laboratory of Functional Polymer Materials of MOE
- Institute of Polymer Chemistry
- Nankai University
- Tianjin 300071, PR China
| | - Yinong Wang
- Key Laboratory of Functional Polymer Materials of MOE
- Institute of Polymer Chemistry
- Nankai University
- Tianjin 300071, PR China
| | - Guolin Wu
- Key Laboratory of Functional Polymer Materials of MOE
- Institute of Polymer Chemistry
- Nankai University
- Tianjin 300071, PR China
- Collaborative Innovation Center of Chemical Science and Engineering
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63
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Abstract
Liposomes are a class of well-established drug carriers that have found numerous therapeutic applications. The success of liposomes, together with recent advancements in nanotechnology, has motivated the development of various novel liposome-like nanostructures with improved drug delivery performance. These nanostructures can be categorized into five major varieties, namely: (1) polymer-stabilized liposomes, (2) nanoparticle-stabilized liposomes, (3) core-shell lipid-polymer hybrid nanoparticles, (4) natural membrane-derived vesicles, and (5) natural membrane coated nanoparticles. They have received significant attention and have become popular drug delivery platforms. Herein, we discuss the unique strengths of these liposome-like platforms in drug delivery, with a particular emphasis on how liposome-inspired novel designs have led to improved therapeutic efficacy, and review recent progress made by each platform in advancing healthcare.
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Affiliation(s)
- Weiwei Gao
- Department of NanoEngineering and Moores Cancer Center, University of California, San Diego, La Jolla, CA 92093, USA
| | - Che-Ming J. Hu
- Department of NanoEngineering and Moores Cancer Center, University of California, San Diego, La Jolla, CA 92093, USA
| | - Ronnie H. Fang
- Department of NanoEngineering and Moores Cancer Center, University of California, San Diego, La Jolla, CA 92093, USA
| | - Liangfang Zhang
- Department of NanoEngineering and Moores Cancer Center, University of California, San Diego, La Jolla, CA 92093, USA
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64
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Zhang C, Zhao Q, Wan L, Wang T, Sun J, Gao Y, Jiang T, Wang S. Poly dimethyl diallyl ammonium coated CMK-5 for sustained oral drug release. Int J Pharm 2013; 461:171-80. [PMID: 24300214 DOI: 10.1016/j.ijpharm.2013.11.050] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2013] [Revised: 11/23/2013] [Accepted: 11/25/2013] [Indexed: 11/24/2022]
Abstract
A new oral sustained drug delivery system (DDS) involving a combination of inorganic mesoporous material (CMK-5) and organic polymer poly dimethyl diallyl ammonium (PDDA) was established to determine its general suitability for use with poorly water soluble drugs. Nimodipine, carvedilol and fenofibrate, three different drugs with acidic or alkaline properties, were selected as model drugs and loaded into carriers. The physicochemical properties of the drug carriers were systematically studied using scanning electron microscopy (SEM), transmission electron microscopy (TEM), and nitrogen adsorption. The structural body changes of the composites in release medium, with or without additional salts, were also studied using particle sizing systems, nitrogen adsorption and zeta potential measurement in order to investigate the sustained release mechanism of the drugs. The results obtained showed that sustained release of drug from the designed DDS was mainly due to the blockage effect arising from the strong swelling of the coated polymers when in contact with release medium. Additional salts, when they reached a certain level, allowed a dramatic burst release. We believe that our designed sustained DDS provide a new option for water insoluble drugs and can be considered as fundamental for those more sophisticated DDS increasingly required in modern medical treatments.
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Affiliation(s)
- Chen Zhang
- Department of Pharmaceutics, School of Pharmacy, Shenyang Pharmaceutical University, Wenhua Road 103, Shenyang 110016, PR China
| | - Qinfu Zhao
- Department of Pharmaceutics, School of Pharmacy, Shenyang Pharmaceutical University, Wenhua Road 103, Shenyang 110016, PR China
| | - Long Wan
- Department of Pharmaceutics, School of Pharmacy, Shenyang Pharmaceutical University, Wenhua Road 103, Shenyang 110016, PR China
| | - Tianyi Wang
- Department of Life Science and Health, Northeastern University, Wenhuadong Road 89, Shenyang 110016, PR China
| | - Jin Sun
- Department of Pharmaceutics, School of Pharmacy, Shenyang Pharmaceutical University, Wenhua Road 103, Shenyang 110016, PR China
| | - Yikun Gao
- Department of Pharmaceutics, School of Pharmacy, Shenyang Pharmaceutical University, Wenhua Road 103, Shenyang 110016, PR China
| | - Tongying Jiang
- Department of Pharmaceutics, School of Pharmacy, Shenyang Pharmaceutical University, Wenhua Road 103, Shenyang 110016, PR China
| | - Siling Wang
- Department of Pharmaceutics, School of Pharmacy, Shenyang Pharmaceutical University, Wenhua Road 103, Shenyang 110016, PR China.
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65
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Intracellular delivery of polymeric nanocarriers: a matter of size, shape, charge, elasticity and surface composition. Ther Deliv 2013; 4:705-23. [PMID: 23738668 DOI: 10.4155/tde.13.37] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
Recent progress in drug discovery has enabled the targeting of specific intracellular molecules to achieve therapeutic effects. These next-generation therapeutics are often biologics that cannot enter cells by mere diffusion. Therefore, it is imperative that drug carriers are efficiently internalized by cells and reach specific target organelles before releasing their cargo. Nanoscale polymeric carriers are particularly suitable for such intracellular delivery. Although size and surface charge have been the most studied parameters for nanocarriers, it is now well appreciated that other properties, for example, particle shape, elasticity and surface composition, also play a critical role in their transport across physiological barriers. It is proposed that a multivariate design space that considers the interdependence of particle geometry with its mechanical and surface properties must be optimized to formulate drug nanocarriers for effective accumulation at target sites and efficient intracellular delivery.
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66
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Wang W, Fang C, Wang X, Chen Y, Wang Y, Feng W, Yan C, Zhao M, Peng S. Modifying mesoporous silica nanoparticles to avoid the metabolic deactivation of 6-mercaptopurine and methotrexate in combinatorial chemotherapy. NANOSCALE 2013; 5:6249-6253. [PMID: 23680872 DOI: 10.1039/c3nr00227f] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
Mesoporous silica nanoparticles with amino and thiol groups (MSNSN) were prepared and covalently modified with methotrexate and 6-mercaptopurine to form 6-MP-MSNSN-MTX. In the presence of DTT, 6-MP-MSNSN-MTX gradually releases 6-MP. In rat plasma, 6-MP-MSNSN-MTX effectively inhibits the metabolic deactivation of 6-MP and MTX. 6-MP-MSNSN-MTX could be an agent for long-acting chemotherapy.
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Affiliation(s)
- Wenjing Wang
- College of Pharmaceutical Sciences, Capital Medical University, Beijing 100069, China
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67
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Kim HK, Thompson DH, Jang HS, Chung YJ, Van den Bossche J. pH-responsive biodegradable assemblies containing tunable phenyl-substituted vinyl ethers for use as efficient gene delivery vehicles. ACS APPLIED MATERIALS & INTERFACES 2013; 5:5648-5658. [PMID: 23772824 PMCID: PMC3740352 DOI: 10.1021/am400977t] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
Novel pH-responsive assemblies (PEG-lipid:DOPE liposomes) containing tunable and bifunctional phenyl-substituted vinyl ether (PIVE) cross-linkers were prepared. The assemblies consisted of 1,2-dioleoyl-sn-glycero-3-phosphoethanolamine (DOPE), acid-cleavable poly(ethylene glycol) (PEG)-conjugated lipids, pDNA, and protamine sulfate (PS). The PIVE linkage was designed to hydrolyze under acidic conditions, and the hydrolysis studies of PEG-lipid compounds containing PIVE at pH 4.2, 5.4, and 7.4 indicated that the hydrolysis rates of PIVE linker were influenced by the substitution of electron withdrawing or electron donating groups on the phenyl ring. Acid-catalyzed hydrolysis of PIVE leads to destabilization of the acid labile PEG-PIVE-lipid:DOPE liposomes via dePEGylation, thereby triggering content release. Content release assays showed that dePEGylation was highly pH-dependent and correlated with the PIVE proton affinity of the phenyl group. These results indicated that the dePEGylative triggering based on a new pH-sensitive PIVE linkage can be controlled. In vitro transfection studies on the pH-responsive assemblies containing mPEG-(MeO-PIVE)-conjugated 1,3-dioctadecyl-rac-glycerol lipids (mPEG-(MeO-PIVE])-DOG) showed higher transfection efficiency compared to that of polyethylenimine (PEI), a positive control, on HEK 293 and COS-7 cells. In addition, lower cytotoxicity of PEG-PIVE-lipid:DOPE liposomes/PS/DNA was observed in comparison to PEI. These results suggest that PEG-PIVE-lipid:DOPE liposomes can be considered as nonviral vehicles for drug and gene delivery applications.
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Affiliation(s)
- Hee-Kwon Kim
- Division of Medicinal Chemistry, College of Pharmacy, The University of Texas at Austin, Austin, Texas 78712, USA.
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68
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Bai J, Liu Y, Sun W, Chen J, Miller AD, Xu Y. Down-regulated lysosomal processing improved pegylated lipopolyplex-mediated gene transfection. J Gene Med 2013; 15:182-92. [DOI: 10.1002/jgm.2707] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2012] [Revised: 04/06/2013] [Accepted: 04/09/2013] [Indexed: 11/05/2022] Open
Affiliation(s)
| | - Yujie Liu
- School of Pharmacy; Shanghai Jiao Tong University; Shanghai; China
| | - Wenqiang Sun
- School of Pharmacy; Shanghai Jiao Tong University; Shanghai; China
| | - Jian Chen
- School of Pharmacy; Shanghai Jiao Tong University; Shanghai; China
| | | | - Yuhong Xu
- School of Pharmacy; Shanghai Jiao Tong University; Shanghai; China
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69
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Mattheolabakis G, Rigas B, Constantinides PP. Nanodelivery strategies in cancer chemotherapy: biological rationale and pharmaceutical perspectives. Nanomedicine (Lond) 2013; 7:1577-90. [PMID: 23148540 DOI: 10.2217/nnm.12.128] [Citation(s) in RCA: 103] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022] Open
Abstract
Nanotechnology is revolutionizing our approach to drug delivery, a key determinant of drug efficacy. Here, we present cancer drug delivery strategies that exploit nanotechnology, providing first an overview of tumor biology aspects that critically affect the design of drug delivery carriers, namely the enhanced permeability and retention effect, the lower tumor extracellular pH and tumor-specific antigens. In general, nanoscience-based approaches have circumvented limitations in the delivery of cancer therapeutics, related to their poor aqueous solubility and toxicity issues with conventional vehicles and resulted in improved pharmacokinetics and biodistribution. Included in the discussion are promising examples and pharmaceutical perspectives on liposomes, nanoemulsions, solid lipid nanoparticles, polymeric nanoparticles, dendrimers, carbon nanotubes and magnetic nanoparticles. As the cardinal features of the ideal multifunctional cancer drug nanocarrier are becoming clear, and drug development challenges are proactively addressed, we anticipate that future advances will enhance therapeutic outcomes by refining the delivery and targeting of complex payloads.
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Affiliation(s)
- George Mattheolabakis
- Division of Cancer Prevention, Department of Medicine, Stony Brook University, Stony Brook, NY, USA
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70
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Dingels C, Müller SS, Steinbach T, Tonhauser C, Frey H. Universal Concept for the Implementation of a Single Cleavable Unit at Tunable Position in Functional Poly(ethylene glycol)s. Biomacromolecules 2013; 14:448-59. [DOI: 10.1021/bm3016797] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Affiliation(s)
- Carsten Dingels
- Department of Organic
Chemistry, Johannes Gutenberg-Universität Mainz, Duesbergweg 10-14, D-55099 Mainz, Germany
| | - Sophie S. Müller
- Department of Organic
Chemistry, Johannes Gutenberg-Universität Mainz, Duesbergweg 10-14, D-55099 Mainz, Germany
- Graduate School Materials Science in Mainz, Staudingerweg 9, D-55128
Mainz, Germany
| | - Tobias Steinbach
- Department of Organic
Chemistry, Johannes Gutenberg-Universität Mainz, Duesbergweg 10-14, D-55099 Mainz, Germany
- Graduate School Materials Science in Mainz, Staudingerweg 9, D-55128
Mainz, Germany
| | - Christine Tonhauser
- Department of Organic
Chemistry, Johannes Gutenberg-Universität Mainz, Duesbergweg 10-14, D-55099 Mainz, Germany
- Graduate School Materials Science in Mainz, Staudingerweg 9, D-55128
Mainz, Germany
| | - Holger Frey
- Department of Organic
Chemistry, Johannes Gutenberg-Universität Mainz, Duesbergweg 10-14, D-55099 Mainz, Germany
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71
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Binauld S, Stenzel MH. Acid-degradable polymers for drug delivery: a decade of innovation. Chem Commun (Camb) 2013; 49:2082-102. [DOI: 10.1039/c2cc36589h] [Citation(s) in RCA: 312] [Impact Index Per Article: 28.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
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72
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Dingels C, Frey H. From Biocompatible to Biodegradable: Poly(Ethylene Glycol)s with Predetermined Breaking Points. HIERARCHICAL MACROMOLECULAR STRUCTURES: 60 YEARS AFTER THE STAUDINGER NOBEL PRIZE II 2013. [DOI: 10.1007/12_2013_235] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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73
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Kim HK, Van den Bossche J, Hyun SH, Thompson DH. Acid-triggered release via dePEGylation of fusogenic liposomes mediated by heterobifunctional phenyl-substituted vinyl ethers with tunable pH-sensitivity. Bioconjug Chem 2012; 23:2071-7. [PMID: 22988941 DOI: 10.1021/bc300266y] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
A new family of heterobifunctional phenyl-substituted vinyl ether (PIVE) coupling agents with tunable acid-sensitivity has been developed. The PIVE compounds are designed to hydrolyze under acidic conditions with hydrolysis rates that can be varied by rational selection of the phenyl ring substituent. These reagents were incorporated within 2-methoxypoly(ethylene glycol) PEG-conjugated 1,3-dioctadecyl-rac-glycerol lipids to produce the acid-cleavable lipopolymers mPEG-[H-PIVE]-DOG, mPEG-[F-PIVE]-DOG, mPEG-[Me-PIVE]-DOG, and mPEG-[MeO-PIVE]-DOG. These lipopolymers were hydrolyzed under acidic conditions (pH 3.5 or 4.5) at rates that were dependent on the electron donating or withdrawing character of the α-phenyl vinyl ether substituent, while remaining stable at pH 7.4. Blending of these compounds with 1,2-dioleoyl-sn-glycero-3-phosphoethanolamine (DOPE) in a 10:90 mPEG-PIVE-Lipid:DOPE ratio produced stable liposomes at neutral pH; however, acidification of the solution led to dePEGylation and release of the liposomal cargo in a manner that correlated with the PIVE proton affinity. Specifically, we observed 70% calcein release within 12 h from mPEG-[MeO-PIVE]-DOG-containing liposomes at pH 4.5, whereas only 22% calcein release was observed from mPEG-[F-PIVE]-DOG:DOPE liposomes over this same time scale and pH. These results indicate that dePEGylation following acidification is a triggering mechanism that can be rationally designed and controlled through the appropriate selection of PIVE moieties.
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Affiliation(s)
- Hee-Kwon Kim
- Department of Chemistry, Purdue University, 560 Oval Drive, West Lafayette, IN 47907, USA
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74
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Whitehead KA, Matthews J, Chang PH, Niroui F, Dorkin JR, Severgnini M, Anderson DG. In vitro-in vivo translation of lipid nanoparticles for hepatocellular siRNA delivery. ACS NANO 2012; 6:6922-9. [PMID: 22770391 PMCID: PMC3429655 DOI: 10.1021/nn301922x] [Citation(s) in RCA: 89] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/18/2023]
Abstract
A significant challenge in the development of clinically viable siRNA delivery systems is a lack of in vitro-in vivo translatability: many delivery vehicles that are initially promising in cell culture do not retain efficacy in animals. Despite its importance, little information exists on the predictive nature of in vitro methodologies, most likely due to the cost and time associated with generating in vitro-in vivo data sets. Recently, high-throughput techniques have been developed that have allowed the examination of hundreds of lipid nanoparticle formulations for transfection efficiency in multiple experimental systems. The large resulting data set has allowed the development of correlations between in vitro and characterization data and in vivo efficacy for hepatocellular delivery vehicles. Consistency of formulation technique and the type of cell used for in vitro experiments was found to significantly affect correlations, with primary hepatocytes and HeLa cells yielding the most predictive data. Interestingly, in vitro data acquired using HeLa cells were more predictive of in vivo performance than mouse hepatoma Hepa1-6 cells. Of the characterization parameters, only siRNA entrapment efficiency was partially predictive of in vivo silencing potential, while zeta-potential and, surprisingly, nanoparticle size (when <300 nm) as measured by dynamic light scattering were not. These data provide guiding principles in the development of clinically viable siRNA delivery materials and have the potential to reduce experimental costs while improving the translation of materials into animals.
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Affiliation(s)
| | - Jonathan Matthews
- David H. Koch Institute for Integrative Cancer Research, Cambridge, MA
| | - Philip H. Chang
- David H. Koch Institute for Integrative Cancer Research, Cambridge, MA
| | - Farnaz Niroui
- David H. Koch Institute for Integrative Cancer Research, Cambridge, MA
| | | | | | - Daniel G. Anderson
- David H. Koch Institute for Integrative Cancer Research, Cambridge, MA
- Department of Chemical Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139 USA
- Harvard-MIT Division of Health Science Technology Massachusetts Institute of Technology, Cambridge, MA 02139 USA
- Correspondence should be addressed to D.G.A. () 500 Main St., 76-653, Cambridge, MA 02139, 617-258-6843 (phone) and 617-258-8827 (fax)
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75
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The effect of cholesterol domains on PEGylated liposomal gene delivery in vitro. Ther Deliv 2012; 2:451-60. [PMID: 22428082 DOI: 10.4155/tde.11.13] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
AIM PEGylated components have been widely used to reduce particle aggregation in serum and extend circulation lifetime for lipid- and polymer-based gene-delivery systems. However, PEGylation is known to interfere with cell interaction and intracellular trafficking, resulting in decreased biological activity. In the present study, the effect of cholesterol domains on PEGylated liposome-mediated gene delivery was evaluated by PEGylating formulations with and without a cholesterol domain, and also by altering the location of PEG on the particle surface (i.e., within or excluded from the domain). MATERIALS AND METHODS Lipoplexes formulated with PEG-cholesterol or PEG-diacyl lipid were used to transfect various cell lines, including human and mouse cancer cells. Cellular uptake of lipoplexes was also quantified and compared with the transfection results. RESULTS Our findings are consistent with previous work demonstrating that PEGylation reduces transfection rates; however, formulations in which PEG was incorporated into the cholesterol domain did not exhibit this detrimental effect. In some cell lines, the incorporation of PEG into the domain actually increased transfection rates, despite no enhancement of cellular uptake. DISCUSSION These results suggest that the adverse alterations in intracellular trafficking that are a consequence of PEGylation may be avoided by utilizing delivery vehicles that allow PEG to partition into a cholesterol domain.
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76
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Cleavable linkers in chemical biology. Bioorg Med Chem 2012; 20:571-82. [DOI: 10.1016/j.bmc.2011.07.048] [Citation(s) in RCA: 157] [Impact Index Per Article: 13.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2011] [Revised: 07/08/2011] [Accepted: 07/23/2011] [Indexed: 01/11/2023]
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77
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Cheng J, Ji R, Gao SJ, Du FS, Li ZC. Facile Synthesis of Acid-Labile Polymers with Pendent Ortho Esters. Biomacromolecules 2011; 13:173-9. [DOI: 10.1021/bm201410c] [Citation(s) in RCA: 44] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Jing Cheng
- Beijing National Laboratory
for Molecular Sciences, Key Laboratory of Polymer Chemistry and Physics
of Ministry of Education, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, People's Republic
of China
| | - Ran Ji
- Beijing National Laboratory
for Molecular Sciences, Key Laboratory of Polymer Chemistry and Physics
of Ministry of Education, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, People's Republic
of China
| | - Shi-Juan Gao
- CAS Key Laboratory
of Pathogenic
Microbiology and Immunology, Institute of Microbiology, Chinese Academy of Sciences, Beijing 100101, People's
Republic of China
| | - Fu-Sheng Du
- Beijing National Laboratory
for Molecular Sciences, Key Laboratory of Polymer Chemistry and Physics
of Ministry of Education, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, People's Republic
of China
| | - Zi-Chen Li
- Beijing National Laboratory
for Molecular Sciences, Key Laboratory of Polymer Chemistry and Physics
of Ministry of Education, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, People's Republic
of China
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78
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Gao Y, Yang C, Liu X, Ma R, Kong D, Shi L. A Multifunctional Nanocarrier Based on Nanogated Mesoporous Silica for Enhanced Tumor-Specific Uptake and Intracellular Delivery. Macromol Biosci 2011; 12:251-9. [DOI: 10.1002/mabi.201100208] [Citation(s) in RCA: 62] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2011] [Revised: 08/26/2011] [Indexed: 11/07/2022]
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79
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SYNTHESIS OF pH RESPONSIBLE DRUG DELIVERY SYSTEMS BY THE INCLUSION OF A DYNAMIC COVALENT BOND, BENZOIC-IMINE. ACTA POLYM SIN 2011. [DOI: 10.3724/sp.j.1105.2011.11181] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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80
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Yuan Z, Huang J, Liu J, Cheng S, Zhuo R, Li F. PEG-detachable and acid-labile cross-linked micelles based on orthoester linked graft copolymer for paclitaxel release. NANOTECHNOLOGY 2011; 22:335601. [PMID: 21788685 DOI: 10.1088/0957-4484/22/33/335601] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
Polyethylene glycol detachable graft copolymer, mPEG-g-p(NAS-co-BMA), was synthesized by grafting 2-(ω-methoxy)PEGyl-1,3-dioxan-5-ylamine onto poly(N-(acryloyloxy)succinimide-co-butyl methacrylate). Pseudo in situ cross-linking of the mPEG-g-p(NAS-co-BMA) was performed in dimethylformamide phosphate buffer (v/v = 1/1) by an acid-labile diamine cross-linker bearing two symmetrical cyclic orthoesters. The cross-linked (CL) micelles with different contents of mPEG segments represented different morphologies. The CL micelles containing approximately one mPEG segment exhibited 'echini' morphology whereas the CL micelle with approximately three mPEG segments formed nanowires. The hydrolysis rate of the CL micelles is highly pH-dependent and much more rapid at mild acid than physiological conditions. Hydrolyzates of the CL micelles formed vesicles because new amphiphilic copolymers were formed. Paclitaxel (PTX) was successfully loaded into the CL micelles and a controlled and pH-dependent release behavior was observed. No obvious cytotoxicity was found for the CL micelles at concentration as high as 800 mg l( - 1).
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Affiliation(s)
- Zhefan Yuan
- Key Laboratory of Biomedical Polymers of Ministry of Education, College of Chemistry and Molecular Science, Wuhan University, Wuhan, 430072, People's Republic of China
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81
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Wang T, Upponi JR, Torchilin VP. Design of multifunctional non-viral gene vectors to overcome physiological barriers: dilemmas and strategies. Int J Pharm 2011; 427:3-20. [PMID: 21798324 DOI: 10.1016/j.ijpharm.2011.07.013] [Citation(s) in RCA: 177] [Impact Index Per Article: 13.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2011] [Revised: 07/11/2011] [Accepted: 07/12/2011] [Indexed: 12/31/2022]
Abstract
Gene-based therapeutics hold great promise for medical advancement and have been used to treat various human diseases with mixed success. However, their therapeutic application in vivo is limited due largely to several physiological barriers. The design of non-viral gene vectors with the ability to overcome delivery obstacles is currently under extensive investigation. These efforts have placed an emphasis on the development of multifunctional vectors able to execute multiple tasks to simultaneously overcome both extracellular and intracellular obstacles. However, the assembly of these different functionalities into a single system to create multifunctional gene vectors faces many conflicts that largely limit the safe and efficient application of lipoplexes and polyplexes in a systemic delivery. In the review, we have described the dilemmas inherent in the design of a viable, non-viral gene vector equipped with multiple functionalities. The strategies directed towards individual delivery barriers are first summarized, followed by a focus on the design of so-called smart multifunctional vectors with the capability to overcome the delivery difficulties of gene medicines, including the so-called the "polycation dilemma", the "PEG dilemma" and the "package and release dilemma".
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Affiliation(s)
- Tao Wang
- Center for Pharmaceutical Biotechnology and Nanomedicine, 312 Mugar Life Sciences Building, 360 Huntington Avenue, Northeastern University, Boston, MA 02115, USA
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82
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Kowalski PS, Leus NGJ, Scherphof GL, Ruiters MHJ, Kamps JAAM, Molema G. Targeted siRNA delivery to diseased microvascular endothelial cells-Cellular and molecular concepts. IUBMB Life 2011; 63:648-58. [DOI: 10.1002/iub.487] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2011] [Accepted: 04/04/2011] [Indexed: 12/11/2022]
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83
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Mignet N, Seguin J, Ramos Romano M, Brullé L, Touil YS, Scherman D, Bessodes M, Chabot GG. Development of a liposomal formulation of the natural flavonoid fisetin. Int J Pharm 2011; 423:69-76. [PMID: 21571054 DOI: 10.1016/j.ijpharm.2011.04.066] [Citation(s) in RCA: 69] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2011] [Revised: 04/08/2011] [Accepted: 04/28/2011] [Indexed: 11/29/2022]
Abstract
The natural flavonoid fisetin (3,3',4',7-tetrahydroxyflavone) has been shown to possess antiangiogenic and anticancer properties. Because of the limited water solubility of fisetin, our aim was to design and optimize a liposomal formulation that could facilitate its in vivo administration, taking into account the availability and cost of the various components. Several methods were evaluated such as probe sonication, homogeneization, film hydration and lipid cake formation. A selection of lipid and lipid-PEG was also performed via their incorporation in different formulations based on the size of the liposomes, their polydispersity index (PDI) and the fisetin encapsulation yield. An optimal liposomal formulation was developed with P90G and DODA-GLY-PEG2000, possessing a diameter in the nanometer scale (175nm), a high homogeneity (PDI 0.12) and a high fisetin encapsulation (73%). Fisetin liposomes were stable over 59 days for their particle diameter and still retained 80% of their original fisetin content on day 32. Moreover, liposomal fisetin retained the cytotoxicity and typical morphological effect of free fisetin in different tumour and endothelial cell lines. In conclusion, based on its physico-chemical properties and retention of fisetin biological effects, the developed liposomal fisetin preparation is therefore suitable for in vivo administration.
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Affiliation(s)
- Nathalie Mignet
- Paris Descartes University, Faculty of Pharmacy, INSERM U1022, CNRS UMR8151, Chimie ParisTech, Chemical, Genetic and Imaging Pharmacology Laboratory (INSERM U1022, CNRS UMR 8151), 4 avenue de l'Observatoire, F-75006 Paris, France.
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84
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Cui Q, Wu F, Wang E. Novel amphiphilic diblock copolymers bearing acid-labile oxazolidine moieties: Synthesis, self-assembly and responsive behavior in aqueous solution. POLYMER 2011. [DOI: 10.1016/j.polymer.2011.02.022] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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85
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Hatakeyama H, Akita H, Harashima H. A multifunctional envelope type nano device (MEND) for gene delivery to tumours based on the EPR effect: a strategy for overcoming the PEG dilemma. Adv Drug Deliv Rev 2011; 63:152-60. [PMID: 20840859 DOI: 10.1016/j.addr.2010.09.001] [Citation(s) in RCA: 483] [Impact Index Per Article: 37.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2010] [Revised: 08/12/2010] [Accepted: 09/03/2010] [Indexed: 10/19/2022]
Abstract
Gene and nucleic acid therapy are expected to play a major role in the next generation of medicine. We recently developed a multifunctional envelope-type nano device (MEND) for use as a novel non-viral gene delivery system. Poly(ethylene glycol) (PEG)ylation is a useful method for achieving a longer circulation time for delivery of the MEND to a tumour via the enhanced permeability and retention (EPR) effect. However, PEGylation strongly inhibits cellular uptake and endosomal escape, which results in significant loss of activity for the delivery system. For successful gene delivery for cancer treatment, the crucial issue associated with the use of PEG, the 'PEG dilemma' must be addressed. In this review, we describe the development and applications of MEND, and discuss strategies for overcoming the PEG dilemma, based on the manipulation of intracellular trafficking of cellular uptake and endosomal release using functional devices such as specific ligands, cleavable PEG systems and endosomal fusogenic/disruptic peptides.
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86
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Synthesis and hydrolytic evaluation of acid-labile imine-linked cytotoxic isatin model systems. Bioorg Med Chem 2011; 19:1771-8. [DOI: 10.1016/j.bmc.2011.01.015] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2010] [Revised: 01/06/2011] [Accepted: 01/10/2011] [Indexed: 11/18/2022]
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87
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Guo S, Huang L. Nanoparticles Escaping RES and Endosome: Challenges for siRNA Delivery for Cancer Therapy. JOURNAL OF NANOMATERIALS 2011. [PMID: 0 DOI: 10.1155/2011/742895] [Citation(s) in RCA: 82] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/08/2023]
Abstract
Small interfering RNAs (siRNAs) technology has emerged as a promising potential treatment for viral, genetic diseases and cancers. Despite the powerful therapeutic potential of siRNA, there are challenges for developing efficient and specific delivery systems for systemic administration. There are extracellular and intracellular barriers for nanoparticle-mediated delivery. First, nanoparticles are rapidly cleared from the circulation by the reticuloendothelial system (RES). Second, following their cellular uptake, nanoparticles are trapped in endosomes/lysosomes, where siRNA would be degraded by enzymes. In this review, we describe strategies for grafting a polyethylene glycol (PEG) brush to the nanoparticles for evading RES, such that they may effectively accumulate in the tumor by the enhanced permeability and retention (EPR) effect. PEG has to shed from the nanoparticles to allow close interaction with the tumor cells. Current strategies for facilitating endosome escape, such as ion pair formation, “proton sponge effect”, destabilizing endosome membrane, and hydrophobic modification of the vector, are discussed.
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Affiliation(s)
- Shutao Guo
- Division of Molecular Pharmaceutics, School of Pharmacy, University of North Carolina, Chapel Hill, NC 27599, USA
| | - Leaf Huang
- Division of Molecular Pharmaceutics, School of Pharmacy, University of North Carolina, Chapel Hill, NC 27599, USA
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88
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Gjetting T, Arildsen NS, Christensen CL, Poulsen TT, Roth JA, Handlos VN, Poulsen HS. In vitro and in vivo effects of polyethylene glycol (PEG)-modified lipid in DOTAP/cholesterol-mediated gene transfection. Int J Nanomedicine 2010; 5:371-83. [PMID: 20957159 PMCID: PMC2950395 DOI: 10.2147/ijn.s10462] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2010] [Indexed: 11/23/2022] Open
Abstract
Background: DOTAP/cholesterol-based lipoplexes are successfully used for delivery of plasmid DNA in vivo especially to the lungs, although low systemic stability and circulation have been reported. To achieve the aim of discovering the best method for systemic delivery of DNA to disseminated tumors we evaluated the potential of formulating DOTAP/cholesterol lipoplexes with a polyethylene glycol (PEG)-modified lipid, giving the benefit of the shielding and stabilizing properties of PEG in the bloodstream. Method: A direct comparison of properties in vitro and in vivo of 4 different DOTAP/cholesterol-based lipoplexes containing 0%, 2%, 4%, and 10% PEG was performed using reporter gene activity and radioactive tracer lipid markers to monitor biodistribution. Results: We found that 10% PEGylation of lipoplexes caused reduced retention in lung and heart tissues of nude mice compared to nonPEGylated lipoplexes, however no significant delivery to xenograft flank tumors was observed. Although PEGylated and nonPEGylated lipoplexes were delivered to cells the ability to mediate successful transfection is hampered upon PEGylation, presumably due to a changed uptake mechanism and intracellular processing. Conclusion: The eminent in vivo transfection potency of DOTAP/cholesterol-based lipoplexes is well established for expression in lung tumors, but it is unsuitable for expression in non first pass organs such as xenograft flank tumors in mice even after addition of a PEG-lipid in the formulation.
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Affiliation(s)
- Torben Gjetting
- Department of Radiation Biology, Finsen Center, University Hospital, Copenhagen, Denmark
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89
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Tang R, Ji W, Wang C. Amphiphilic block copolymers bearing ortho ester side-chains: pH-dependent hydrolysis and self-assembly in water. Macromol Biosci 2010; 10:192-201. [PMID: 19904722 DOI: 10.1002/mabi.200900229] [Citation(s) in RCA: 58] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
A new type of pH-responsive block copolymer nanoparticle has been synthesized and characterized. The amphiphilic diblock copolymer, PEG-b-PMYM, contains acid-labile ortho ester side-chains in the hydrophobic block and can self-assemble into micelle-like nanoparticles in water at neutral pH. Hydrolysis of the ortho ester side-chains follows a distinct exocyclic mechanism and shows pH-dependent kinetics, which triggers changes in nanoparticle size and morphology. The nanoparticles have been found to be non-toxic to cells in vitro. The ability to tune the size and morphology of biocompatible block copolymer nanoparticles by controlling the pH-sensitive side-chain hydrolysis represents a unique approach that may be exploited to improve the efficacy of nanometer-scale drug delivery.
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Affiliation(s)
- Rupei Tang
- Department of Biomedical Engineering, University of Minnesota, Minneapolis, MN 55455, USA
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90
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Aryal S, Hu CMJ, Zhang L. Combinatorial drug conjugation enables nanoparticle dual-drug delivery. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2010; 6:1442-8. [PMID: 20564488 DOI: 10.1002/smll.201000631] [Citation(s) in RCA: 130] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
A new approach to loading multiple drugs onto the same drug-delivery nanocarrier in a precisely controllable manner, by covalently preconjugating multiple therapeutic agents through hydrolyzable linkers to form drug conjugates, is reported. In contrast to loading individual types of drugs separately, this drug-conjugates strategy enables the loading of multiple drugs onto the same carrier with a predefined stoichiometric ratio. The cleavable linkers allow the therapeutic activity of the individual drugs to be resumed after the drug conjugates are delivered into the target cells and unloaded from the delivery vehicle. As a proof of concept, the synthesis and characterization of paclitaxel-gemcitabine conjugates are demonstrated. The time-dependent hydrolysis kinetics and cytotoxicity of the combinatorial drug conjugates against human pancreatic cancer cells are examined. It is shown that the synthesized drug conjugates can be readily encapsulated into a lipid-coated polymeric drug-delivery nanoparticle, which significantly improves the cytotoxicity of the drug conjugates as compared to the free drug conjugates.
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Affiliation(s)
- Santosh Aryal
- Department of Nanoengineering University of California San Diego, La Jolla, CA 92093, USA
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91
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Rao NM. Cationic lipid-mediated nucleic acid delivery: beyond being cationic. Chem Phys Lipids 2010; 163:245-52. [DOI: 10.1016/j.chemphyslip.2010.01.001] [Citation(s) in RCA: 60] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2009] [Revised: 11/25/2009] [Accepted: 01/03/2010] [Indexed: 10/20/2022]
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92
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Bruyère H, Westwell AD, Jones AT. Tuning the pH sensitivities of orthoester based compounds for drug delivery applications by simple chemical modification. Bioorg Med Chem Lett 2010; 20:2200-3. [PMID: 20207145 DOI: 10.1016/j.bmcl.2010.02.035] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2009] [Revised: 02/08/2010] [Accepted: 02/08/2010] [Indexed: 10/19/2022]
Abstract
Orthoesters are acid-sensitive moieties that allow substantial structural diversity for biological applications including drug delivery. Here, the pH-sensitivity of a range of novel orthoester based compounds was compared in the range 7.5-4.5 that is characteristic of the increased acidification during endocytosis. We find that simple modifications close to the orthoester had major effects on both the rate and extent of hydrolysis, suggesting this could be exploited for activating drug delivery systems on endocytic pathways.
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Affiliation(s)
- Hélène Bruyère
- Welsh School of Pharmacy, Cardiff University, Redwood Building, Cardiff CF10 3NB, Wales, UK
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93
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Liu R, Zhang Y, Zhao X, Agarwal A, Mueller LJ, Feng P. pH-responsive nanogated ensemble based on gold-capped mesoporous silica through an acid-labile acetal linker. J Am Chem Soc 2010; 132:1500-1. [PMID: 20085351 DOI: 10.1021/ja907838s] [Citation(s) in RCA: 344] [Impact Index Per Article: 24.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A new pH-responsive hybrid nanogated ensemble has been developed by using acetal group linked gold nanoparticle capped mesoporous silica. The hydrolysis of acetal linker at acidic environment makes the gold nanoparticles work as a gatekeeper to control the release of guest molecules from mesoporous silica under different pH's.
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Affiliation(s)
- Rui Liu
- Department of Chemistry, University of California, Riverside, California 92521, USA
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94
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Mignet N, Scherman D. Anionic pH sensitive lipoplexes. Methods Mol Biol 2010; 605:435-444. [PMID: 20072899 DOI: 10.1007/978-1-60327-360-2_30] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
To provide long circulating nanoparticles which can carry a gene to tumors, we have designed anionic pegylated lipoplexes that are pH sensitive. Anionic pegylated lipoplexes have been prepared from the combined formulation of cationic lipoplexes and pegylated anionic liposomes. The neutralization of the particle surface charge as a function of the pH was monitored by light scattering, in order to determine the ratio between anionic and cationic lipids that would give pH sensitive complexes. This ratio has been optimized to form particles sensitive to pH change in the range 5.5-6.5. Compaction of DNA into these newly formed anionic complexes was checked by DNA accessibility to picogreen. The transfection efficiency and pH sensitive property of these formulations were shown in vitro using bafilomycin, a vacuolar H(+)-ATPase inhibitor.
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Affiliation(s)
- Nathalie Mignet
- Unité de Pharmacologie Chimique et Génétique, Inserm, U640, Paris, France
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95
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Abstract
A major limiting factor for the wide application of pH-sensitive liposomes is their recognition and sequestration by the phagocytes of the reticulo-endothelial system, which conditions a very short circulation half-life. Typically prolonged circulation of liposomes is achieved by grafting their membranes with pegylated phospholipids (PEG-lipids), which have been shown, however, to deteriorate membrane integrity on one hand and to hamper the pH-responsiveness on the other. Hence, the need for novel alternative surface modifying agents to ensure effective half-life prolongation of pH-sensitive liposomes is a subject of intensive research. A series of copolymers having short blocks of lipid-mimetic units has been shown to sterically stabilize conventional liposomes based on different phospholipids. This has prompted us to broaden their utilization to pH-sensitive liposomes, too. The present contribution gives thorough account on the chemical synthesis of these copolymers their incorporation in DOPE:CHEMs pH-sensitive liposomes and detailed explanation on the battery of techniques for the biopharmaceutical characterization of the prepared formulations in terms of pH-responsiveness, cellular internalization, in vivo pharmacokinetics and biodistribution.
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Affiliation(s)
- Denitsa Momekova
- Department of Pharmaceutical Technology and Biopharmaceutics, Faculty of Pharmacy, Medical University-Sofia, Sofia, Bulgaria
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96
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Ding C, Gu J, Qu X, Yang Z. Preparation of Multifunctional Drug Carrier for Tumor-Specific Uptake and Enhanced Intracellular Delivery through the Conjugation of Weak Acid Labile Linker. Bioconjug Chem 2009; 20:1163-70. [DOI: 10.1021/bc800563g] [Citation(s) in RCA: 143] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Affiliation(s)
- Caixia Ding
- State Key Laboratory of Polymer Physics and Chemistry, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
| | - Jingxia Gu
- State Key Laboratory of Polymer Physics and Chemistry, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
| | - Xiaozhong Qu
- State Key Laboratory of Polymer Physics and Chemistry, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
| | - Zhenzhong Yang
- State Key Laboratory of Polymer Physics and Chemistry, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
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97
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Bhattacharya S, Bajaj A. Advances in gene delivery through molecular design of cationic lipids. Chem Commun (Camb) 2009:4632-56. [DOI: 10.1039/b900666b] [Citation(s) in RCA: 232] [Impact Index Per Article: 15.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
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98
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Mignet N, Richard C, Seguin J, Largeau C, Bessodes M, Scherman D. Anionic pH-sensitive pegylated lipoplexes to deliver DNA to tumors. Int J Pharm 2008; 361:194-201. [DOI: 10.1016/j.ijpharm.2008.05.017] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2008] [Revised: 05/16/2008] [Accepted: 05/17/2008] [Indexed: 11/30/2022]
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99
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MacLachlan I. Lipid-Mediated in vivo Delivery of Small Interfering RNAs. THERAPEUTIC OLIGONUCLEOTIDES 2008. [DOI: 10.1039/9781847558275-00241] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Affiliation(s)
- Ian MacLachlan
- Protiva Biotherapeutics Inc. 100-3480 Gilmore Way Burnaby BC Canada V5G 4Y1
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100
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Abstract
Colloidal drug delivery systems have been providing alternative formulation approaches for problematic drug candidates, and improved delivery for existing compounds for decades. Colloidal systems for drug delivery have all evolved down a similar pathway, almost irrespective of the delivery system, from conception, to the use of safer excipients, PEGylation for passive targeting and attachment of ligands for active targeting. The recent emergence of truly biologically interactive systems represents the latest step forward in colloidal delivery systems. In this article, the maturation pathway and recent advances for the major classes of colloidal delivery systems are reviewed, and the paper poses the question of whether the nanotechnology boom will create a revolution in colloidal delivery, or just the next natural stage in evolution.
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Affiliation(s)
- Ben J Boyd
- Department of Pharmaceutics, Victorian College of Pharmacy - Monash University, 381 Royal Pde, Parkville, VIC, 3052, Australia.
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