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He T, Shaw I, Vedadghavami A, Bajpayee AG. Single-Dose Intra-Cartilage Delivery of Kartogenin Using a Cationic Multi-Arm Avidin Nanocarrier Suppresses Cytokine-Induced Osteoarthritis-Related Catabolism. Cartilage 2022; 13:19476035221093072. [PMID: 35491681 PMCID: PMC9251829 DOI: 10.1177/19476035221093072] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/08/2023] Open
Abstract
OBJECTIVE Kartogenin (KGN) has proven as a both chondrogenic and chondroprotective drug for osteoarthritis (OA) therapy. However, being a small hydrophobic molecule, KGN suffers from rapid joint clearance and inability to penetrate cartilage to reach chondrocytes following intra-articular administration. As such multiple high doses are needed that can lead to off-target effects including stimulation and tissue outgrowth. Here we design charge-based cartilage targeting formulation of KGN by using a multi-arm cationic nano-construct of Avidin (mAv) that can rapidly penetrate into cartilage in high concentrations owing to weak-reversible electrostatic binding interactions with negatively charged aggrecan-glycosaminoglycans (GAGs) and form an extended-release drug depot such that its therapeutic benefit can be reaped in just a single dose. DESIGN We synthesized 2 novel formulations, one with a releasable ester linker (mAv-OH-KGN, release half-life ~58 h) that enables sustained KGN release over 2 weeks and another with a non-releasable amide linker (mAv-NH-KGN) that relies on mAv's ability to be uptaken and endocytosed by chondrocytes for drug delivery. Their effectiveness in suppressing cytokine-induced catabolism was evaluated in vitro using cartilage explant culture model. RESULTS A single 100 μM dose of cartilage homing mAv-KGN was significantly more effective in suppressing cytokine-induced GAG loss, cell death, inflammatory response and in rescuing cell metabolism than a single dose of free KGN; multiple doses of free KGN were needed to match this therapeutic response. CONCLUSION mAv mediated delivery of KGN is promising and can facilitate clinical translation of KGN for OA treatment with only a single dose.
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Affiliation(s)
- Tengfei He
- Department of Bioengineering,
Northeastern University, Boston, MA, USA
| | - Irfhan Shaw
- Department of Bioengineering,
Northeastern University, Boston, MA, USA
| | | | - Ambika G. Bajpayee
- Department of Bioengineering,
Northeastern University, Boston, MA, USA,Department of Mechanical Engineering,
Northeastern University, Boston, MA, USA,Ambika G. Bajpayee, Department of
Bioengineering, Northeastern University, ISEC Room 216, 805 Columbus Avenue,
Boston, MA 02120, USA.
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2
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Zhang J, Chen S, Teng J, Li B, Wang L, Yang J, Zhao Y. Self‐assembled nanovehicle for intracellular enzyme‐triggered antitumor drug release. MACROMOL CHEM PHYS 2022. [DOI: 10.1002/macp.202200028] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Jin Zhang
- College of Chemistry and Chemical Engineering Yunnan Normal University Kunming 650500 China
| | - Siling Chen
- College of Chemistry and Chemical Engineering Yunnan Normal University Kunming 650500 China
| | - Jinkui Teng
- College of Chemistry and Chemical Engineering Yunnan Normal University Kunming 650500 China
| | - Bilian Li
- College of Chemistry and Chemical Engineering Yunnan Normal University Kunming 650500 China
| | - Lingli Wang
- College of Chemistry and Chemical Engineering Yunnan Normal University Kunming 650500 China
| | - Jianmei Yang
- College of Chemistry and Chemical Engineering Yunnan Normal University Kunming 650500 China
| | - Yan Zhao
- College of Chemistry and Chemical Engineering Yunnan Normal University Kunming 650500 China
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3
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Parın FN, Parın U. Spirulina Biomass‐Loaded Thermoplastic Polyurethane/Polycaprolacton (TPU/PCL) Nanofibrous Mats: Fabrication, Characterization, and Antibacterial Activity as Potential Wound Healing. ChemistrySelect 2022. [DOI: 10.1002/slct.202104148] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Affiliation(s)
- Fatma Nur Parın
- Polymer Materials Engineering Department Faculty of Engineering and Natural Sciences Bursa Technical University Sinan Campus Yıldırım Bursa 16310 Turkey
| | - Uğur Parın
- Microbiology Department Faculty of Veterinary Science Aydın Adnan Menderes University Işıklı Campus Efeler Aydın 09010 Turkey
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4
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Yang C, Lin ZI, Chen JA, Xu Z, Gu J, Law WC, Yang JHC, Chen CK. Organic/Inorganic Self-Assembled Hybrid Nano-Architectures for Cancer Therapy Applications. Macromol Biosci 2021; 22:e2100349. [PMID: 34735739 DOI: 10.1002/mabi.202100349] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2021] [Revised: 10/25/2021] [Indexed: 12/20/2022]
Abstract
Since the conceptualization of nanomedicine, numerous nanostructure-mediated drug formulations have progressed into clinical trials for treating cancer. However, recent clinical trial results indicate such kind of drug formulations has a limited improvement on the antitumor efficacy. This is due to the biological barriers associated with those formulations, for example, circulation stability, extravasation efficiency in tumor, tumor penetration ability, and developed multi-drug resistance. When employing for nanomedicine formulations, pristine organic-based and inorganic-based nanostructures have their own limitations. Accordingly, organic/inorganic (O/I) hybrids have been developed to integrate the merits of both, and to minimize their intrinsic drawbacks. In this context, the recent development in O/I hybrids resulting from a self-assembly strategy will be introduced. Through such a strategy, organic and inorganic building blocks can be self-assembled via either chemical covalent bonds or physical interactions. Based on the self-assemble procedure, the hybridization of four organic building blocks including liposomes, micelles, dendrimers, and polymeric nanocapsules with five functional inorganic nanoparticles comprising gold nanostructures, magnetic nanoparticles, carbon-based materials, quantum dots, and silica nanoparticles will be highlighted. The recent progress of these O/I hybrids in advanced modalities for combating cancer, such as, therapeutic agent delivery, photothermal therapy, photodynamic therapy, and immunotherapy will be systematically reviewed.
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Affiliation(s)
- Chengbin Yang
- Guangdong Key Laboratory for Biomedical Measurements and Ultrasound Imaging, School of Biomedical Engineering, Shenzhen University Health Science Center, Shenzhen, 518060, China
| | - Zheng-Ian Lin
- Polymeric Biomaterials Laboratory, Department of Materials and Optoelectronic Science, National Sun Yat-sen University, Kaohsiung, 80424, Taiwan
| | - Jian-An Chen
- Polymeric Biomaterials Laboratory, Department of Materials and Optoelectronic Science, National Sun Yat-sen University, Kaohsiung, 80424, Taiwan
| | - Zhourui Xu
- Guangdong Key Laboratory for Biomedical Measurements and Ultrasound Imaging, School of Biomedical Engineering, Shenzhen University Health Science Center, Shenzhen, 518060, China
| | - Jiayu Gu
- Department of Pharmacy, The Second Clinical Medical College (Shenzhen People's Hospital), Jinan University, Shenzhen, 518020, China
| | - Wing-Cheung Law
- Department of Industrial and Systems Engineering, The Hong Kong Polytechnic University, Hung Hom, Hong Kong, China
| | - Jason Hsiao Chun Yang
- Department of Fiber and Composite Materials, Feng Chia University, Taichung, 40724, Taiwan
| | - Chih-Kuang Chen
- Polymeric Biomaterials Laboratory, Department of Materials and Optoelectronic Science, National Sun Yat-sen University, Kaohsiung, 80424, Taiwan
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5
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Zhang X, Lin ZI, Yang J, Liu GL, Hu Z, Huang H, Li X, Liu Q, Ma M, Xu Z, Xu G, Yong KT, Tsai WC, Tsai TH, Ko BT, Chen CK, Yang C. Carbon Dioxide-Derived Biodegradable and Cationic Polycarbonates as a New siRNA Carrier for Gene Therapy in Pancreatic Cancer. NANOMATERIALS 2021; 11:nano11092312. [PMID: 34578632 PMCID: PMC8472555 DOI: 10.3390/nano11092312] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/06/2021] [Revised: 08/18/2021] [Accepted: 09/01/2021] [Indexed: 12/15/2022]
Abstract
Pancreatic cancer is an aggressive malignancy associated with poor prognosis and a high tendency in developing infiltration and metastasis. K-ras mutation is a major genetic disorder in pancreatic cancer patient. RNAi-based therapies can be employed for combating pancreatic cancer by silencing K-ras gene expression. However, the clinical application of RNAi technology is appreciably limited by the lack of a proper siRNA delivery system. To tackle this hurdle, cationic poly (cyclohexene carbonate) s (CPCHCs) using widely sourced CO2 as the monomer are subtly synthesized via ring-opening copolymerization (ROCOP) and thiol-ene functionalization. The developed CPCHCs could effectively encapsulate therapeutic siRNA to form CPCHC/siRNA nanoplexes (NPs). Serving as a siRNA carrier, CPCHC possesses biodegradability, negligible cytotoxicity, and high transfection efficiency. In vitro study shows that CPCHCs are capable of effectively protecting siRNA from being degraded by RNase and promoting a sustained endosomal escape of siRNA. After treatment with CPCHC/siRNA NPs, the K-ras gene expression in both pancreatic cancer cell line (PANC-1 and MiaPaCa-2) are significantly down-regulated. Subsequently, the cell growth and migration are considerably inhibited, and the treated cells are induced into cell apoptotic program. These results demonstrate the promising potential of CPCHC-mediated siRNA therapies in pancreatic cancer treatment.
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Affiliation(s)
- Xinmeng Zhang
- Guangdong Key Laboratory for Biomedical Measurements and Ultrasound Imaging, School of Biomedical Engineering, Health Science Center, Shenzhen University, Shenzhen 518060, China; (X.Z.); (J.Y.); (Z.H.); (H.H.); (X.L.); (Q.L.); (M.M.); (Z.X.); (G.X.)
| | - Zheng-Ian Lin
- Polymeric Biomaterials Laboratory, Department of Materials and Optoelectronic Science, National Sun Yat-Sen University, Kaohsiung 80424, Taiwan;
| | - Jingyu Yang
- Guangdong Key Laboratory for Biomedical Measurements and Ultrasound Imaging, School of Biomedical Engineering, Health Science Center, Shenzhen University, Shenzhen 518060, China; (X.Z.); (J.Y.); (Z.H.); (H.H.); (X.L.); (Q.L.); (M.M.); (Z.X.); (G.X.)
| | - Guan-Lin Liu
- Department of Chemistry, National Chung Hsing University, Taichung 402, Taiwan;
| | - Zulu Hu
- Guangdong Key Laboratory for Biomedical Measurements and Ultrasound Imaging, School of Biomedical Engineering, Health Science Center, Shenzhen University, Shenzhen 518060, China; (X.Z.); (J.Y.); (Z.H.); (H.H.); (X.L.); (Q.L.); (M.M.); (Z.X.); (G.X.)
| | - Haoqiang Huang
- Guangdong Key Laboratory for Biomedical Measurements and Ultrasound Imaging, School of Biomedical Engineering, Health Science Center, Shenzhen University, Shenzhen 518060, China; (X.Z.); (J.Y.); (Z.H.); (H.H.); (X.L.); (Q.L.); (M.M.); (Z.X.); (G.X.)
| | - Xiang Li
- Guangdong Key Laboratory for Biomedical Measurements and Ultrasound Imaging, School of Biomedical Engineering, Health Science Center, Shenzhen University, Shenzhen 518060, China; (X.Z.); (J.Y.); (Z.H.); (H.H.); (X.L.); (Q.L.); (M.M.); (Z.X.); (G.X.)
| | - Qiqi Liu
- Guangdong Key Laboratory for Biomedical Measurements and Ultrasound Imaging, School of Biomedical Engineering, Health Science Center, Shenzhen University, Shenzhen 518060, China; (X.Z.); (J.Y.); (Z.H.); (H.H.); (X.L.); (Q.L.); (M.M.); (Z.X.); (G.X.)
| | - Mingze Ma
- Guangdong Key Laboratory for Biomedical Measurements and Ultrasound Imaging, School of Biomedical Engineering, Health Science Center, Shenzhen University, Shenzhen 518060, China; (X.Z.); (J.Y.); (Z.H.); (H.H.); (X.L.); (Q.L.); (M.M.); (Z.X.); (G.X.)
- Department of Biomedical Engineering, Southern University of Science and Technology, Shenzhen 518055, China
| | - Zhourui Xu
- Guangdong Key Laboratory for Biomedical Measurements and Ultrasound Imaging, School of Biomedical Engineering, Health Science Center, Shenzhen University, Shenzhen 518060, China; (X.Z.); (J.Y.); (Z.H.); (H.H.); (X.L.); (Q.L.); (M.M.); (Z.X.); (G.X.)
| | - Gaixia Xu
- Guangdong Key Laboratory for Biomedical Measurements and Ultrasound Imaging, School of Biomedical Engineering, Health Science Center, Shenzhen University, Shenzhen 518060, China; (X.Z.); (J.Y.); (Z.H.); (H.H.); (X.L.); (Q.L.); (M.M.); (Z.X.); (G.X.)
| | - Ken-Tye Yong
- School of Biomedical Engineering, The University of Sydney, Sydney, NSW 2006, Australia;
- The University of Sydney Nano Institute, The University of Sydney, Sydney, NSW 2006, Australia
| | - Wei-Chung Tsai
- Division of Cardiology, Department of Internal Medicine, Kaohsiung Medical University Hospital, Kaohsiung 80708, Taiwan; (W.-C.T.); (T.-H.T.)
| | - Tzu-Hsien Tsai
- Division of Cardiology, Department of Internal Medicine, Kaohsiung Medical University Hospital, Kaohsiung 80708, Taiwan; (W.-C.T.); (T.-H.T.)
| | - Bao-Tsan Ko
- Department of Chemistry, National Chung Hsing University, Taichung 402, Taiwan;
- Correspondence: (B.-T.K.); (C.-K.C.); (C.Y.); Tel.: +886-4-2284-0411 (ext. 715) (B.-T.K.); +886-7-525-2000 (ext. 4060) (C.-K.C.); +86-0755-2693-2683 (C.Y.)
| | - Chih-Kuang Chen
- Polymeric Biomaterials Laboratory, Department of Materials and Optoelectronic Science, National Sun Yat-Sen University, Kaohsiung 80424, Taiwan;
- Correspondence: (B.-T.K.); (C.-K.C.); (C.Y.); Tel.: +886-4-2284-0411 (ext. 715) (B.-T.K.); +886-7-525-2000 (ext. 4060) (C.-K.C.); +86-0755-2693-2683 (C.Y.)
| | - Chengbin Yang
- Guangdong Key Laboratory for Biomedical Measurements and Ultrasound Imaging, School of Biomedical Engineering, Health Science Center, Shenzhen University, Shenzhen 518060, China; (X.Z.); (J.Y.); (Z.H.); (H.H.); (X.L.); (Q.L.); (M.M.); (Z.X.); (G.X.)
- Correspondence: (B.-T.K.); (C.-K.C.); (C.Y.); Tel.: +886-4-2284-0411 (ext. 715) (B.-T.K.); +886-7-525-2000 (ext. 4060) (C.-K.C.); +86-0755-2693-2683 (C.Y.)
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6
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Franck CO, Fanslau L, Bistrovic Popov A, Tyagi P, Fruk L. Biopolymer-based Carriers for DNA Vaccine Design. Angew Chem Int Ed Engl 2021; 60:13225-13243. [PMID: 32893932 PMCID: PMC8247987 DOI: 10.1002/anie.202010282] [Citation(s) in RCA: 27] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2020] [Indexed: 12/16/2022]
Abstract
Over the last 30 years, genetically engineered DNA has been tested as novel vaccination strategy against various diseases, including human immunodeficiency virus (HIV), hepatitis B, several parasites, and cancers. However, the clinical breakthrough of the technique is confined by the low transfection efficacy and immunogenicity of the employed vaccines. Therefore, carrier materials were designed to prevent the rapid degradation and systemic clearance of DNA in the body. In this context, biopolymers are a particularly promising DNA vaccine carrier platform due to their beneficial biochemical and physical characteristics, including biocompatibility, stability, and low toxicity. This article reviews the applications, fabrication, and modification of biopolymers as carrier medium for genetic vaccines.
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Affiliation(s)
- Christoph O. Franck
- Department of Chemical Engineering and BiotechnologyUniversity of CambridgePhillipa Fawcett DriveCambridgeCB3 0ASUK
| | - Luise Fanslau
- Department of Chemical Engineering and BiotechnologyUniversity of CambridgePhillipa Fawcett DriveCambridgeCB3 0ASUK
| | - Andrea Bistrovic Popov
- Department of Chemical Engineering and BiotechnologyUniversity of CambridgePhillipa Fawcett DriveCambridgeCB3 0ASUK
| | - Puneet Tyagi
- Dosage Form Design and DevelopmentBioPharmaceuticals DevelopmentR&DAstra ZenecaGaithersburgMD20878USA
| | - Ljiljana Fruk
- Department of Chemical Engineering and BiotechnologyUniversity of CambridgePhillipa Fawcett DriveCambridgeCB3 0ASUK
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7
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Ring-opening polymerization of L-lactide by using sodium complexes bearing amide as catalysts in high polar solvent. Polym Bull (Berl) 2021. [DOI: 10.1007/s00289-020-03240-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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8
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Franck CO, Fanslau L, Bistrovic Popov A, Tyagi P, Fruk L. Biopolymer‐based Carriers for DNA Vaccine Design. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202010282] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Affiliation(s)
- Christoph O. Franck
- Department of Chemical Engineering and Biotechnology University of Cambridge Phillipa Fawcett Drive Cambridge CB3 0AS UK
| | - Luise Fanslau
- Department of Chemical Engineering and Biotechnology University of Cambridge Phillipa Fawcett Drive Cambridge CB3 0AS UK
| | - Andrea Bistrovic Popov
- Department of Chemical Engineering and Biotechnology University of Cambridge Phillipa Fawcett Drive Cambridge CB3 0AS UK
| | - Puneet Tyagi
- Dosage Form Design and Development BioPharmaceuticals Development R&D Astra Zeneca Gaithersburg MD 20878 USA
| | - Ljiljana Fruk
- Department of Chemical Engineering and Biotechnology University of Cambridge Phillipa Fawcett Drive Cambridge CB3 0AS UK
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9
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Chang CJ, Chiu CF, Wu KH, Chang YL, Lai YC, Ding S, Chen HY. N-heterocyclic ligand optimization for aluminum complexes in ε-caprolactone and L-Lactide polymerization. POLYMER 2020. [DOI: 10.1016/j.polymer.2020.122572] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
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10
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Jafari A, Rajabian N, Zhang G, Alaa Mohamed M, Lei P, Andreadis ST, Pfeifer BA, Cheng C. PEGylated Amine-Functionalized Poly(ε-caprolactone) for the Delivery of Plasmid DNA. MATERIALS 2020; 13:ma13040898. [PMID: 32085401 PMCID: PMC7079624 DOI: 10.3390/ma13040898] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/31/2020] [Revised: 02/11/2020] [Accepted: 02/12/2020] [Indexed: 12/12/2022]
Abstract
As a promising strategy for the treatment of various diseases, gene therapy has attracted increasing attention over the past decade. Among various gene delivery approaches, non-viral vectors made of synthetic biomaterials have shown significant potential. Due to their synthetic nature, non-viral vectors can have tunable structures and properties by using various building units. In particular, they can offer advantages over viral vectors with respect to biosafety and cytotoxicity. In this study, a well-defined poly(ethylene glycol)-block-poly(α-(propylthio-N,N-diethylethanamine hydrochloride)-ε-caprolactone) diblock polymer (PEG-b-CPCL) with one poly(ethylene glycol) (PEG) block and one tertiary amine-functionalized cationic poly(ε-caprolactone) (CPCL) block, as a novel non-viral vector in the delivery of plasmid DNA (pDNA), was synthesized and studied. Despite having a degradable polymeric structure, the polymer showed remarkable hydrolytic stability over multiple weeks. The optimal ratio of the polymer to pDNA for nanocomplex formation, pDNA release from the nanocomplex with the presence of heparin, and serum stability of the nanocomplex were probed through gel electrophoresis. Nanostructure of the nanocomplexes was characterized by DLS and TEM imaging. Relative to CPCL homopolymers, PEG-b-CPCL led to better solubility over a wide range of pH. Overall, this work demonstrates that PEG-b-CPCL possesses a range of valuable properties as a promising synthetic vector for pDNA delivery.
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Affiliation(s)
- Amin Jafari
- Department of Chemical and Biological Engineering, University at Buffalo, The State University of New York, Buffalo, NY 14260, USA; (A.J.); (N.R.); (G.Z.); (M.A.M.); (P.L.); (S.T.A.); (B.A.P.)
| | - Nika Rajabian
- Department of Chemical and Biological Engineering, University at Buffalo, The State University of New York, Buffalo, NY 14260, USA; (A.J.); (N.R.); (G.Z.); (M.A.M.); (P.L.); (S.T.A.); (B.A.P.)
| | - Guojian Zhang
- Department of Chemical and Biological Engineering, University at Buffalo, The State University of New York, Buffalo, NY 14260, USA; (A.J.); (N.R.); (G.Z.); (M.A.M.); (P.L.); (S.T.A.); (B.A.P.)
- Key Laboratory of Marine Drugs, Chinese Ministry of Education, School of Medicine and Pharmacy, Ocean University of China, Qingdao 266003, China
- Laboratory for Marine Drugs and Bioproducts of Qingdao National Laboratory for Marine Science and Technology, Qingdao 266237, China
| | - Mohamed Alaa Mohamed
- Department of Chemical and Biological Engineering, University at Buffalo, The State University of New York, Buffalo, NY 14260, USA; (A.J.); (N.R.); (G.Z.); (M.A.M.); (P.L.); (S.T.A.); (B.A.P.)
- Chemistry Department, Faculty of Science, Mansoura University, Mansoura 35516, Egypt
| | - Pedro Lei
- Department of Chemical and Biological Engineering, University at Buffalo, The State University of New York, Buffalo, NY 14260, USA; (A.J.); (N.R.); (G.Z.); (M.A.M.); (P.L.); (S.T.A.); (B.A.P.)
| | - Stelios T. Andreadis
- Department of Chemical and Biological Engineering, University at Buffalo, The State University of New York, Buffalo, NY 14260, USA; (A.J.); (N.R.); (G.Z.); (M.A.M.); (P.L.); (S.T.A.); (B.A.P.)
| | - Blaine A. Pfeifer
- Department of Chemical and Biological Engineering, University at Buffalo, The State University of New York, Buffalo, NY 14260, USA; (A.J.); (N.R.); (G.Z.); (M.A.M.); (P.L.); (S.T.A.); (B.A.P.)
- Key Laboratory of Marine Drugs, Chinese Ministry of Education, School of Medicine and Pharmacy, Ocean University of China, Qingdao 266003, China
- Laboratory for Marine Drugs and Bioproducts of Qingdao National Laboratory for Marine Science and Technology, Qingdao 266237, China
| | - Chong Cheng
- Department of Chemical and Biological Engineering, University at Buffalo, The State University of New York, Buffalo, NY 14260, USA; (A.J.); (N.R.); (G.Z.); (M.A.M.); (P.L.); (S.T.A.); (B.A.P.)
- Correspondence: ; Tel.: +1-716-645-1193
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11
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Wang W, Hsu S, Su Y, Chen H, Lin C. Dual zinc catalysts for
L
‐lactide polymerization and reaction of CO
2
with cyclohexene oxide. J CHIN CHEM SOC-TAIP 2019. [DOI: 10.1002/jccs.201900168] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Wei‐Chu Wang
- Department of ChemistryNational Chung Hsing University Taichung Taiwan, ROC
| | - Shih‐Hsien Hsu
- Department of ChemistryNational Chung Hsing University Taichung Taiwan, ROC
| | - Yu‐Chia Su
- Department of ChemistryNational Chung Hsing University Taichung Taiwan, ROC
| | - Hsuan‐Ying Chen
- Department of Medicinal and Applied ChemistryKaohsiung Medical University Kaohsiung Taiwan, ROC
- Department of Medical ResearchKaohsiung Medical University Hospital Kaohsiung Taiwan, ROC
| | - Chu‐Chieh Lin
- Department of ChemistryNational Chung Hsing University Taichung Taiwan, ROC
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12
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Chen YF, Lai YD, Chang CH, Tsai YC, Tang CC, Jan JS. Star-shaped polypeptides exhibit potent antibacterial activities. NANOSCALE 2019; 11:11696-11708. [PMID: 31179463 DOI: 10.1039/c9nr02012h] [Citation(s) in RCA: 42] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
Peptide-based biomaterials are a promising class of antimicrobial agents that work by physically damaging bacterial cell membranes rather than targeting intracellular factors, resulting in less susceptibility to drug resistance. Herein we report the synthesis of cationic, star-shaped polypeptides with 3 to 8 arms and their evaluation as antimicrobial agents against different types of bacteria. The effects of the arm number and side chain group on their antimicrobial activities were systematically investigated. Compared to their linear counterparts, these star-shaped polypeptides exhibited potent antibacterial activity (which may involve adhesion and disruption processes). The increase of the arm number can efficiently increase the antibacterial activities up until 8 arms, which did not exhibit further improvement of antibacterial activities. Poly(l-lysine) (PLL) modified with an indole group (PLL-g-indo) exhibited the best antibacterial activity among all grafted copolypeptides and improved cytotoxic selectivity towards pathogens over mammalian cells without compromising their hemolytic activities. In vivo studies showed that the star-shaped PLL-g-indo can effectively suppress Enterohaemorrhagic E. coli (EHEC) infection and attenuate the clinical symptoms in mice, suggesting that they are promising antimicrobial agents.
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Affiliation(s)
- Yu-Fon Chen
- Department of Chemical Engineering, National Cheng Kung University, Tainan 70101, Taiwan.
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13
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Li J, Zheng L, Xiao H, Li C, Wu S, Xiao Y, Liu J, Zhang B. Design of zwitterionic polyester based nano-carriers for platinum(iv) prodrug delivery. Polym Chem 2019. [DOI: 10.1039/c9py00870e] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Zwitterionic l-cysteine have been applied to modify polyester and load a platinum(iv) drug to prolong the circulation time of the drugs in blood and improve the stability of drug loading.
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Affiliation(s)
- Jiaxu Li
- Beijing National Laboratory for Molecular Sciences
- Key Laboratory of Engineering Plastics
- CAS Research/Education Center for Excellence in Molecular Sciences
- Institute of Chemistry
- Chinese Academy of Sciences
| | - Liuchun Zheng
- Beijing National Laboratory for Molecular Sciences
- Key Laboratory of Engineering Plastics
- CAS Research/Education Center for Excellence in Molecular Sciences
- Institute of Chemistry
- Chinese Academy of Sciences
| | - Haihua Xiao
- State Key Laboratory of Polymer Physics and Chemistry
- Institute of Chemistry
- Chinese Academy of Sciences
- Beijing 100190
- People's Republic of China
| | - Chuncheng Li
- Beijing National Laboratory for Molecular Sciences
- Key Laboratory of Engineering Plastics
- CAS Research/Education Center for Excellence in Molecular Sciences
- Institute of Chemistry
- Chinese Academy of Sciences
| | - Shaohua Wu
- Beijing National Laboratory for Molecular Sciences
- Key Laboratory of Engineering Plastics
- CAS Research/Education Center for Excellence in Molecular Sciences
- Institute of Chemistry
- Chinese Academy of Sciences
| | - Yaonan Xiao
- Beijing National Laboratory for Molecular Sciences
- Key Laboratory of Engineering Plastics
- CAS Research/Education Center for Excellence in Molecular Sciences
- Institute of Chemistry
- Chinese Academy of Sciences
| | - Jiajian Liu
- Beijing National Laboratory for Molecular Sciences
- Key Laboratory of Engineering Plastics
- CAS Research/Education Center for Excellence in Molecular Sciences
- Institute of Chemistry
- Chinese Academy of Sciences
| | - Bo Zhang
- Beijing National Laboratory for Molecular Sciences
- Key Laboratory of Engineering Plastics
- CAS Research/Education Center for Excellence in Molecular Sciences
- Institute of Chemistry
- Chinese Academy of Sciences
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Becker G, Wurm FR. Functional biodegradable polymers via ring-opening polymerization of monomers without protective groups. Chem Soc Rev 2018; 47:7739-7782. [PMID: 30221267 DOI: 10.1039/c8cs00531a] [Citation(s) in RCA: 103] [Impact Index Per Article: 17.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Biodegradable polymers are of current interest and chemical functionality in such materials is often demanded in advanced biomedical applications. Functional groups often are not tolerated in the polymerization process of ring-opening polymerization (ROP) and therefore protective groups need to be applied. Advantageously, several orthogonally reactive functions are available, which do not demand protection during ROP. We give an insight into available, orthogonally reactive cyclic monomers and the corresponding functional synthetic and biodegradable polymers, obtained from ROP. Functionalities in the monomer are reviewed, which are tolerated by ROP without further protection and allow further post-modification of the corresponding chemically functional polymers after polymerization. Synthetic concepts to these monomers are summarized in detail, preferably using precursor molecules. Post-modification strategies for the reported functionalities are presented and selected applications highlighted.
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Affiliation(s)
- Greta Becker
- Max Planck Institute for Polymer Research, Ackermannweg 10, 55128 Mainz, Germany.
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15
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Synthesis, characterization, and catalytic activity of lithium complexes bearing NNO-tridentate Schiff base ligands toward ring-opening polymerization of -lactide. POLYMER 2018. [DOI: 10.1016/j.polymer.2018.02.002] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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16
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Malhotra K, Shankar S, Rai R, Singh Y. Broad-Spectrum Antibacterial Activity of Proteolytically Stable Self-Assembled αγ-Hybrid Peptide Gels. Biomacromolecules 2018; 19:782-792. [PMID: 29384665 DOI: 10.1021/acs.biomac.7b01582] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
Bacterial infections pose a serious threat to mankind, and there is immense interest in the design and development of self-assembled peptide gels using ultrashort peptides for antibacterial applications. The peptide gels containing natural amino acids suffer from poor stability against proteolytic enzymes. Therefore, there is a need to design and develop peptide gels with improved stability against proteolytic enzymes. In the present work, we report the synthesis and characterization of α/γ hybrid peptides Boc-D-Phe-γ4-L-Phe-PEA (NH007) and Boc-L-Phe-γ4-L-Phe-PEA (NH009) to improve the proteolytic stability. Both of the dipeptides were found to self-assemble into gels in aqueous DMSO (3-5% w/v), and the self-assembly process was studied using FTIR and CD, which indicated antiparallel β-sheet formation with random coils in NH007 gels and random or unordered conformation in NH009. The rheological studies indicated viscoelastic characteristics for both gels; the storage modulus ( G') for NH007 and NH009 gels (3% w/v) was estimated as 0.2 and 0.5 MPa, higher than the loss modulus ( G''). Also, both gels demonstrated self-healing characteristics for six consecutive cycles when subjected to varying strains of 0.1 and 30% (200 s each). The peptide gels were incubated with a mocktail of proteolytic enzymes, proteinase K, pepsin, and chymotrypsin, and stability was monitored using RP HPLC. Up to 23 and 40% degradation was observed for NH007 (3%, w/v) in 24 and 36 h, and 77 and 94% degradation was observed for NH009 (3%, w/v), within the same period. Thus α/γ hybrid peptide gels containing D-Phe exhibited higher stability than gels fabricated using L-Phe. The use of D-residue in α/γ hybrid peptide significantly enhanced the stability of peptides against proteolytic enzymes, as the stability data reported in this work are possibly the best in class. Both peptide gels exhibited broad-spectrum antibacterial activity against Gram-negative and Gram-positive bacteria, such as Escherichia coli, Pseudomonas aeruginosa, Bacillus subtilis, and Staphylococcus aureus. The Pseudomonas aeruginosa and Staphylococcus aureus, in particular, are known to develop resistance. The NH007 (3%, w/v) demonstrated 65% inhibition, whereas NH009 (3%, w/v) showed 78% inhibition, with potent activity against Pseudomonas aeruginosa. Mechanistic studies, using SEM, HR-TEM, and bacterial live-dead assay, indicated entrapment of bacteria in gel networks, followed by interaction with cell membrane components and lysis. Cell viability (MTT assay) and toxicity (LDH assay) studies showed that both gels are not toxic to NIH 3T3 mouse embryonic fibroblast cells (mammalian). MTT assay showed >85% cell viability, and LDH assay exhibited not more than 15% cytotoxicity, even at higher concentrations (5%, w/v) and prolonged exposures (48 h). Overall, studies indicate the potential application of gels developed from the α/γ hybrid peptides in preventing biomaterial-related infections.
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Affiliation(s)
- Kamal Malhotra
- Department of Chemistry , Indian Institute of Technology Ropar , Rupnagar 140001 , Punjab , India
| | - Sudha Shankar
- Medicinal Chemistry Division , CSIR-Indian Institute of Integrative Medicine , Canal Road , Jammu Tawi 180001 , Jammu and Kashmir , India.,Academy of Scientific and Innovative Research , New Delhi 110001 , Delhi , India
| | - Rajkishor Rai
- Medicinal Chemistry Division , CSIR-Indian Institute of Integrative Medicine , Canal Road , Jammu Tawi 180001 , Jammu and Kashmir , India.,Academy of Scientific and Innovative Research , New Delhi 110001 , Delhi , India
| | - Yashveer Singh
- Department of Chemistry , Indian Institute of Technology Ropar , Rupnagar 140001 , Punjab , India
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17
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Cao X, Lu X, Wang D, Jia F, Tan X, Corley M, Chen X, Zhang K. Modulating the Cellular Immune Response of Oligonucleotides by Brush Polymer-Assisted Compaction. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2017; 13:10.1002/smll.201701432. [PMID: 28696590 PMCID: PMC9016755 DOI: 10.1002/smll.201701432] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/04/2017] [Revised: 05/31/2017] [Indexed: 05/05/2023]
Abstract
Unwanted stimulation of the innate immune system by foreign nucleic acids has been one of the major barriers preventing bioactive sequences from reaching market. Foreign nucleic acids can be recognized by multiple pattern recognition receptors (PRRs), which trigger a signaling cascade to activate host defense systems, leading to a range of side effects. This study demonstrates that polyethylene glycol (PEG)-modified DNA strands can greatly reduce the activation of the innate immune system, and the extent of reduction is dependent upon polymer architecture. Highly branched brushes with long PEG side chains achieve the best suppression by blocking PRR interactions via a local steric effect. Interestingly, the brush polymer creates little barrier toward DNA-DNA interaction. Quantification of inflammatory cytokines in both mRNA and protein levels as well as the extent of cellular uptake shows a direct correlation between steric congestion and reduction of cellular immune response. These results suggest that the brush architecture offers unique advantages for PEGylating oligonucleotides in the context of minimizing unwanted immune system activation.
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Affiliation(s)
- Xueyan Cao
- Department of Chemistry and Chemical Biology, Northeastern University, Boston, MA, 02115, USA
- College of Chemistry, Chemical Engineering and Biotechnology, Donghua University, Shanghai, 201620, P. R. China
| | - Xueguang Lu
- Department of Chemistry and Chemical Biology, Northeastern University, Boston, MA, 02115, USA
| | - Dali Wang
- Department of Chemistry and Chemical Biology, Northeastern University, Boston, MA, 02115, USA
| | - Fei Jia
- Department of Chemistry and Chemical Biology, Northeastern University, Boston, MA, 02115, USA
| | - Xuyu Tan
- Department of Chemistry and Chemical Biology, Northeastern University, Boston, MA, 02115, USA
| | - Michelle Corley
- Department of Chemistry and Chemical Biology, Northeastern University, Boston, MA, 02115, USA
| | - Xiaoying Chen
- Department of Chemistry and Chemical Biology, Northeastern University, Boston, MA, 02115, USA
| | - Ke Zhang
- Department of Chemistry and Chemical Biology, Northeastern University, Boston, MA, 02115, USA
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18
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Xi Y, Song T, Tang S, Wang N, Du J. Preparation and Antibacterial Mechanism Insight of Polypeptide-Based Micelles with Excellent Antibacterial Activities. Biomacromolecules 2016; 17:3922-3930. [PMID: 27936717 DOI: 10.1021/acs.biomac.6b01285] [Citation(s) in RCA: 90] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
Traditional antibiotics usually sterilize in chemical ways, which may lead to serious drug resistance. By contrast, peptide-based antibacterial materials are less susceptible to drug resistance. Herein we report the preparation of an antibacterial peptide-based copolymer micelle and the investigation of its membrane-penetration antibacterial mechanism by transmission electron microscopy (TEM). The copolymer is poly(l-lactide)-block-poly(phenylalanine-stat-lysine) [PLLA31-b-poly(Phe24-stat-Lys36)], which is synthesized by ring-opening polymerization. The PLLA chains form the core, whereas the polypeptide chains form the coronas of the micelle in aqueous solution. This micelle boasts excellent antibacterial efficacy against both Gram-positive and Gram-negative bacteria. Furthermore, TEM studies clearly reveal that the micelles pierce and then destroy the cell membrane of the bacteria. We also compared the advantages and disadvantages of two general methods for measuring the Minimal Inhibitory Concentration (MIC) values of antibacterial micelles. Overall, this study provides us with direct evidence for the antibacterial mechanism of polypeptide-based micelles and a strategy for synthesizing biodegradable antibacterial nanomaterials without antibiotic resistance.
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Affiliation(s)
- Yuejing Xi
- Shanghai Tenth People's Hospital, Tongji University School of Medicine , 301 Middle Yanchang Road, Shanghai 200072, China.,Department of Polymeric Materials, School of Materials Science and Engineering, Tongji University , 4800 Caoan Road, Shanghai 201804, China
| | - Tao Song
- Department of Polymeric Materials, School of Materials Science and Engineering, Tongji University , 4800 Caoan Road, Shanghai 201804, China
| | - Songyao Tang
- Department of Polymeric Materials, School of Materials Science and Engineering, Tongji University , 4800 Caoan Road, Shanghai 201804, China
| | - Nuosha Wang
- Department of Polymeric Materials, School of Materials Science and Engineering, Tongji University , 4800 Caoan Road, Shanghai 201804, China
| | - Jianzhong Du
- Shanghai Tenth People's Hospital, Tongji University School of Medicine , 301 Middle Yanchang Road, Shanghai 200072, China.,Department of Polymeric Materials, School of Materials Science and Engineering, Tongji University , 4800 Caoan Road, Shanghai 201804, China
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19
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Yu X, Hou J, Shi Y, Su C, Zhao L. Preparation and characterization of novel chitosan-protamine nanoparticles for nucleus-targeted anticancer drug delivery. Int J Nanomedicine 2016; 11:6035-6046. [PMID: 27881917 PMCID: PMC5115688 DOI: 10.2147/ijn.s117066] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
It is well known that most anticancer drugs commonly show high toxicity to the DNA of tumor cells and exert effects by combining with the DNA or associated enzymes in the nucleus. Most developed drugs are first delivered into the cytoplasm and then transferred to the nucleus through the membrane pores. Sometimes, the transportation of drugs from cytoplasm to nucleus is not efficient and often results in poor therapeutic effects. In this study, we developed special and novel nanoparticles (NPs) made of chitosan and protamine for targeted nuclear capture of drugs to enhance anticancer effects. The anticancer effects of nuclear targeted-delivery of drugs in NPs were also evaluated by investigating cytotoxicity, cellular uptake mechanism, and cell apoptosis on cells. Chitosan–protamine NPs were characterized by good drug entrapment, sustained release, small average particle size, low polydispersity index, and high encapsulation efficiency; and accomplished the efficient nuclear delivery of fluorouracil (5-Fu). Compared with free 5-Fu and 5-Fu-loaded chitosan NPs, treatment of A549 cells and HeLa cells with 5-Fu-loaded chitosan–protamine NPs showed the highest cytotoxicity and further induced the significant apoptosis of cells. In addition, 5-Fu-loaded chitosan–protamine NPs exhibited the best efficiency in inhibiting tumor growth than the other three formulations. 5-Fu-loaded chitosan–protamine NPs enhanced antitumor efficacy through the targeted nuclear capture of drugs and showed promising potential as a nanodelivery system for quickly locating drugs in the nucleus of cells.
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Affiliation(s)
| | | | | | - Chang Su
- School of Veterinary Medicine, Jinzhou Medical University, Jinzhou, People's Republic of China
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20
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Hill AB, Chen M, Chen CK, Pfeifer BA, Jones CH. Overcoming Gene-Delivery Hurdles: Physiological Considerations for Nonviral Vectors. Trends Biotechnol 2016; 34:91-105. [PMID: 26727153 PMCID: PMC5800990 DOI: 10.1016/j.tibtech.2015.11.004] [Citation(s) in RCA: 115] [Impact Index Per Article: 14.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2015] [Revised: 11/16/2015] [Accepted: 11/17/2015] [Indexed: 12/13/2022]
Abstract
With the use of contemporary tools and techniques, it has become possible to more precisely tune the biochemical mechanisms associated with using nonviral vectors for gene delivery. Consequently, nonviral vectors can incorporate numerous vector compositions and types of genetic cargo to develop diverse genetic therapies. Despite these advantages, gene-delivery strategies using nonviral vectors have poorly translated into clinical success due to preclinical experimental design considerations that inadequately predict therapeutic efficacy. Furthermore, the manufacturing and distribution processes are critical considerations for clinical application that should be considered when developing therapeutic platforms. In this review, we evaluate potential avenues towards improving the transition of gene-delivery technologies from in vitro assessment to human clinical therapy.
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Affiliation(s)
- Andrew B Hill
- Abcombi Biosciences Inc, Buffalo, NY, USA; McKetta Department of Chemical Engineering, The University of Texas at Austin, Austin, TX, USA
| | - Mingfu Chen
- Department of Chemical and Biological Engineering, University at Buffalo, The State University of New York, Buffalo, BY, USA
| | - Chih-Kuang Chen
- Department of Fiber and Composite Materials, Feng Chia University, Taichung, Taiwan, ROC
| | - Blaine A Pfeifer
- Abcombi Biosciences Inc, Buffalo, NY, USA; Department of Chemical and Biological Engineering, University at Buffalo, The State University of New York, Buffalo, BY, USA.
| | - Charles H Jones
- Abcombi Biosciences Inc, Buffalo, NY, USA; Department of Chemical and Biological Engineering, University at Buffalo, The State University of New York, Buffalo, BY, USA.
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21
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Tseng HC, Chen HY, Huang YT, Lu WY, Chang YL, Chiang MY, Lai YC, Chen HY. Improvement in Titanium Complexes Bearing Schiff Base Ligands in the Ring-Opening Polymerization of L-Lactide: A Dinuclear System with Hydrazine-Bridging Schiff Base Ligands. Inorg Chem 2016; 55:1642-50. [DOI: 10.1021/acs.inorgchem.5b02590] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Hsi-Ching Tseng
- Department
of Medicinal and Applied Chemistry, Kaohsiung Medical University, Kaohsiung 80708, Taiwan R.O.C
| | - Hsing-Yin Chen
- Department
of Medicinal and Applied Chemistry, Kaohsiung Medical University, Kaohsiung 80708, Taiwan R.O.C
| | - Yen-Tzu Huang
- Department
of Medicinal and Applied Chemistry, Kaohsiung Medical University, Kaohsiung 80708, Taiwan R.O.C
| | - Wei-Yi Lu
- Department
of Chemistry, National Chung Hsing University, Taichung 402, Taiwan R.O.C
| | - Yu-Lun Chang
- Department
of Medicinal and Applied Chemistry, Kaohsiung Medical University, Kaohsiung 80708, Taiwan R.O.C
- Department
of Chemistry, National Sun Yat-Sen University, Kaohsiung 804, Taiwan R.O.C
| | - Michael Y. Chiang
- Department
of Medicinal and Applied Chemistry, Kaohsiung Medical University, Kaohsiung 80708, Taiwan R.O.C
- Department
of Chemistry, National Sun Yat-Sen University, Kaohsiung 804, Taiwan R.O.C
| | - Yi-Chun Lai
- Department
of Medicinal and Applied Chemistry, Kaohsiung Medical University, Kaohsiung 80708, Taiwan R.O.C
| | - Hsuan-Ying Chen
- Department
of Medicinal and Applied Chemistry, Kaohsiung Medical University, Kaohsiung 80708, Taiwan R.O.C
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22
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Jones CH, Hill A, Chen M, Pfeifer BA. Contemporary approaches for nonviral gene therapy. DISCOVERY MEDICINE 2015; 19:447-54. [PMID: 26175402 PMCID: PMC9892924] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
Gene therapy is the manipulation of gene expression patterns in specific cells to treat genetic and pathological diseases. This manipulation is accomplished by the controlled introduction of exogenous nucleic acids into target cells. Given the size and negative charge of these biomacromolecules, the delivery process is driven by the carrier vector, of which the usage of viral vectors dominates. Taking into account the limitations of viral vectors, nonviral alternatives have gained significant attention due to their flexible design, low cytotoxicity and immunogenicity, and their gene delivery efficacy. That stated, the field of nonviral vectors has been dominated by research dedicated to overcoming barriers in gene transfer. Unfortunately, these traditional nonviral vectors have failed to completely overcome the barriers required for clinical translation and thus, have failed to match the delivery outcomes of viral vector. This has consequently encouraged the development of new, more radical approaches that have the potential for higher clinical translation. In this review, we discuss recent advances in vector technology and nucleic acid chemistry that have challenged the current understanding of nonviral systems. The diversity of these approaches highlights the numerous alternative avenues for overcoming innate and technical barriers associated with gene delivery.
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Affiliation(s)
- Charles H. Jones
- Department of Chemical and Biological Engineering, University at Buffalo, The State University of New York, Buffalo, New York, USA
| | - Andrew Hill
- McKetta Department of Chemical Engineering, The University of Texas at Austin, Austin, Texas, USA
| | - Mingfu Chen
- Department of Chemical and Biological Engineering, University at Buffalo, The State University of New York, Buffalo, New York, USA
| | - Blaine A. Pfeifer
- Department of Chemical and Biological Engineering, University at Buffalo, The State University of New York, Buffalo, New York, USA,Corresponding authors. Department of Chemical and Biological Engineering, University at Buffalo, State University of New York, Buffalo, NY 14260-4200, USA, Phone: 716-645-1198, Fax: 716-645-3822.
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23
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Jones CH, Gollakota A, Chen M, Chung TC, Ravikrishnan A, Zhang G, Pfeifer BA. Influence of molecular weight upon mannosylated bio-synthetic hybrids for targeted antigen presenting cell gene delivery. Biomaterials 2015; 58:103-11. [PMID: 25941787 DOI: 10.1016/j.biomaterials.2015.04.033] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2015] [Revised: 04/13/2015] [Accepted: 04/14/2015] [Indexed: 11/24/2022]
Abstract
Given the rise of antibiotic resistant microbes, genetic vaccination is a promising prophylactic strategy that enables rapid design and manufacture. Facilitating this process is the choice of vector, which is often situationally-specific and limited in engineering capacity. Furthermore, these shortcomings are usually tied to an incomplete understanding of the structure-function relationships driving vector-mediated gene delivery. Building upon our initial report of a hybrid bacterial-biomaterial gene delivery vector, a comprehensive structure-function assessment was completed using a class of mannosylated poly(beta-amino esters). Through a top-down screening methodology, an ideal polymer was selected on the basis of gene delivery efficacy and then used for the synthesis of a stratified molecular weight polymer library. By eliminating contributions of polymer chemical background, we were able to complete an in-depth assessment of gene delivery as a function of (1) polymer molecular weight, (2) relative mannose content, (3) polymer-membrane biophysical properties, (4) APC uptake specificity, and (5) serum inhibition. In summary, the flexibility and potential of the hybrid design featured in this work highlights the ability to systematically probe vector-associated properties for the development of translational gene delivery candidates.
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Affiliation(s)
- Charles H Jones
- Department of Chemical and Biological Engineering, University at Buffalo, The State University of New York, Buffalo, NY 14260-4200, USA
| | - Akhila Gollakota
- Department of Chemical and Biological Engineering, University at Buffalo, The State University of New York, Buffalo, NY 14260-4200, USA
| | - Mingfu Chen
- Department of Chemical and Biological Engineering, University at Buffalo, The State University of New York, Buffalo, NY 14260-4200, USA
| | - Tai-Chun Chung
- Department of Chemical and Biological Engineering, University at Buffalo, The State University of New York, Buffalo, NY 14260-4200, USA
| | - Anitha Ravikrishnan
- Department of Chemical and Biological Engineering, University at Buffalo, The State University of New York, Buffalo, NY 14260-4200, USA
| | - Guojian Zhang
- Department of Chemical and Biological Engineering, University at Buffalo, The State University of New York, Buffalo, NY 14260-4200, USA
| | - Blaine A Pfeifer
- Department of Chemical and Biological Engineering, University at Buffalo, The State University of New York, Buffalo, NY 14260-4200, USA.
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24
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Chung TC, Jones CH, Gollakota A, Ahmadi MK, Rane S, Zhang G, Pfeifer BA. Improved Escherichia coli Bactofection and Cytotoxicity by Heterologous Expression of Bacteriophage ΦX174 Lysis Gene E. Mol Pharm 2015; 12:1691-700. [PMID: 25849744 PMCID: PMC9896019 DOI: 10.1021/acs.molpharmaceut.5b00172] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
Bactofection offers a gene delivery option particularly useful in the context of immune modulation. The bacterial host naturally attracts recognition and cellular uptake by antigen presenting cells (APCs) as the initial step in triggering an immune response. Moreover, depending on the bacterial vector, molecular biology tools are available to influence and/or overcome additional steps and barriers to effective antigen presentation. In this work, molecular engineering was applied using Escherichia coli as a bactofection vector. In particular, the bacteriophage ΦX174 lysis E (LyE) gene was designed for variable expression across strains containing different levels of lysteriolysin O (LLO). The objective was to generate a bacterial vector with improved attenuation and delivery characteristics. The resulting strains exhibited enhanced gene and protein release and inducible cellular death. In addition, the new vectors demonstrated improved gene delivery and cytotoxicity profiles to RAW264.7 macrophage APCs.
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