1
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Wang P, Qu X, Che X, Luo Q, Tang X, Liu Y. Pharmaceutical strategies in improving anti-tumour efficacy and safety of intraperitoneal therapy for peritoneal metastasis. Expert Opin Drug Deliv 2021; 18:1193-1210. [PMID: 33682562 DOI: 10.1080/17425247.2021.1896493] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
Introduction: In selected patients with limited peritoneal metastasis (PM), favorable tumor biology, and a good clinical condition, there is an indication for combination of cytoreductive surgery (CRS) and subsequent intravenous (IV) or intraperitoneal (IP) chemotherapy. Compared with IV injection, IP therapy can achieve a high drug concentration within the peritoneal cavity with low systemic toxicity, however, the clinical application of IP chemotherapy is limited by the related abdominal pain, infection, and intolerance.Areas covered:To improve the anti-tumor efficacy and safety of IP therapy, various pharmaceutical strategies have been developed and show promising potential. This review discusses the specialized modification of traditional drug delivery systems and demonstrates the preparation of customized drug carriers for IP therapy, including chemotherapy and gene therapy. IP therapy has important clinical significance in the treatment of PM using novel anti-tumor agents as well as conventional drugs in new applications.Expert opinion: Although IP therapy exhibits good performance both in mouse models and in patients with PM in clinical trials, its clinical application remains limited due to the serious side effects and low acceptability. Further investigations, including pharmaceutical strategies, are needed to develop potential IP therapy, focusing on the efficacy and safety thereof.
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Affiliation(s)
- Puxiu Wang
- Department of Pharmacy, The First Affiliated Hospital of China Medical University, Shenyang, China
| | - Xiujuan Qu
- Department of Medical Oncology, The First Hospital of China Medical University, China.,Key Laboratory of Anticancer Drugs and Biotherapy of Liaoning Province, The First Hospital of China Medical University, China.,Liaoning Province Clinical Research Center for Cancer, China
| | - Xiaofang Che
- Department of Medical Oncology, The First Hospital of China Medical University, China.,Key Laboratory of Anticancer Drugs and Biotherapy of Liaoning Province, The First Hospital of China Medical University, China.,Liaoning Province Clinical Research Center for Cancer, China
| | - Qiuhua Luo
- Department of Pharmacy, The First Affiliated Hospital of China Medical University, Shenyang, China
| | - Xing Tang
- Department of Pharmaceutics, College of Pharmacy, Shenyang Pharmaceutical University, Shenyang, China
| | - Yunpeng Liu
- Department of Medical Oncology, The First Hospital of China Medical University, China.,Key Laboratory of Anticancer Drugs and Biotherapy of Liaoning Province, The First Hospital of China Medical University, China.,Liaoning Province Clinical Research Center for Cancer, China
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2
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Richter F, Martin L, Leer K, Moek E, Hausig F, Brendel JC, Traeger A. Tuning of endosomal escape and gene expression by functional groups, molecular weight and transfection medium: a structure-activity relationship study. J Mater Chem B 2020; 8:5026-5041. [PMID: 32319993 DOI: 10.1039/d0tb00340a] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
The use of genetic material by non-viral transfer systems is still in its initial stages, but there are high expectations for the development of targeted therapies. However, nucleic acids cannot enter cells without help, they must be well protected to prevent degradation and overcome a variety of biological barriers, the endosomal barrier being one of the greatest cellular challenges. Herein, the structure-property-relationship was investigated in detail, using well-defined polymers. Polyacrylamides were synthesized via RAFT polymerization resulting in a polymer library of (i) different cationic groups as aminoethyl acrylamide (AEAm), dimethylaminoethyl acrylamide (DMAEAm), dimethylaminopropyl acrylamide (DMAPAm) and guanidinopropyl acrylamide (GPAm); (ii) different degree of polymerization; and investigated (iii) in different cell culture settings. The influence of molar mass and cationic moiety on complex formation with pDNA, cytotoxicity and transfection efficiency of the polymers were investigated. The systematic approach identified a pH-independent guanidinium-containing homopolymer (PGPAm89) as the polymer with the highest transfection efficiency and superior endosomal release under optimal conditions. Since PGPAm89 is not further protonated inside endosomes, common escape theories appear unsuitable. Therefore, the interaction with bis(monoacryloylglycerol)phosphate, a lipid specific for endosomal vesicles, was investigated. Our research suggests that the interactions between amines and lipids may be more relevant than anticipated.
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Affiliation(s)
- Friederike Richter
- Laboratory of Organic and Macromolecular Chemistry (IOMC), Friedrich Schiller University Jena, Humboldtstrasse 10, 07743 Jena, Germany.
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3
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Lou B, Connor K, Sweeney K, Miller IS, O'Farrell A, Ruiz-Hernandez E, Murray DM, Duffy GP, Wolfe A, Mastrobattista E, Byrne AT, Hennink WE. RGD-decorated cholesterol stabilized polyplexes for targeted siRNA delivery to glioblastoma cells. Drug Deliv Transl Res 2020; 9:679-693. [PMID: 30972664 DOI: 10.1007/s13346-019-00637-y] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
The development of an effective and safe treatment for glioblastoma (GBM) represents a significant challenge in oncology today. Downregulation of key mediators of cell signal transduction by RNA interference is considered a promising treatment strategy but requires efficient, intracellular delivery of siRNA into GBM tumor cells. Here, we describe novel polymeric siRNA nanocarriers functionalized with cRGD peptide that mediates targeted and efficient reporter gene silencing in U87R invasive human GBM cells. The polymer was synthesized via RAFT copolymerization of N-(2-hydroxypropyl)-methacrylamide (HPMA) and N-acryloxysuccinimide (NAS), followed by post-polymerization modification with cholesterol for stabilization, cationic amines for siRNA complexation, and azides for copper-free click chemistry. The novel resultant cationic polymer harboring a terminal cholesterol group, self-assembled with siRNA to yield nanosized polyplexes (~ 40 nm) with good colloidal stability at physiological ionic strength. Post-modification of the preformed polyplexes with PEG-cRGD end-functionalized with bicyclo[6.1.0]nonyne (BCN) group resulted in enhanced cell uptake and increased luciferase gene silencing in U87R cells, compared to polyplexes lacking cRGD-targeting groups.
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Affiliation(s)
- Bo Lou
- Department of Pharmaceutics, Utrecht Institute for Pharmaceutical Sciences, Utrecht University, 3584 CG, Utrecht, The Netherlands
| | - Kate Connor
- Department of Physiology and Medical Physics, Royal College of Surgeons in Ireland, York Street, Dublin 2, Ireland
| | - Kieron Sweeney
- Department of Physiology and Medical Physics, Royal College of Surgeons in Ireland, York Street, Dublin 2, Ireland.,Department of Neurosurgery, Beaumont Hospital, Dublin, Ireland
| | - Ian S Miller
- Department of Physiology and Medical Physics, Royal College of Surgeons in Ireland, York Street, Dublin 2, Ireland
| | - Alice O'Farrell
- Department of Physiology and Medical Physics, Royal College of Surgeons in Ireland, York Street, Dublin 2, Ireland
| | | | - David M Murray
- Department of Physiology and Medical Physics, Royal College of Surgeons in Ireland, York Street, Dublin 2, Ireland
| | - Garry P Duffy
- Anatomy, School of Medicine, College of Medicine Nursing and Health Sciences, National University of Ireland, Galway, Ireland
| | - Alan Wolfe
- UCD School of Veterinary Medicine, Belfield, Dublin, Ireland
| | - Enrico Mastrobattista
- Department of Pharmaceutics, Utrecht Institute for Pharmaceutical Sciences, Utrecht University, 3584 CG, Utrecht, The Netherlands
| | - Annette T Byrne
- Department of Physiology and Medical Physics, Royal College of Surgeons in Ireland, York Street, Dublin 2, Ireland
| | - Wim E Hennink
- Department of Pharmaceutics, Utrecht Institute for Pharmaceutical Sciences, Utrecht University, 3584 CG, Utrecht, The Netherlands.
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4
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Yunus Basha R, Venkatachalam G, Sampath Kumar TS, Doble M. Dimethylaminoethyl modified curdlan nanoparticles for targeted siRNA delivery to macrophages. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2019; 108:110379. [PMID: 31923932 DOI: 10.1016/j.msec.2019.110379] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/27/2019] [Revised: 10/26/2019] [Accepted: 10/29/2019] [Indexed: 12/14/2022]
Abstract
Curdlan, an insoluble and neutral polysaccharide, was produced from Agrobacterium sp. ATCC 31750 and chemically modified with dimethylaminoethyl (DMAE) group to introduce gene binding ability. The resulting DMAE-curdlan was crosslinked with curdlan nanoparticles using epichlorohydrin. The prepared nanoparticles are spherical with an average diameter of 523 ± 195 nm, stable and are highly biocompatible with differentiated THP-1 macrophages with viability of above 90%. They are taken up more efficiently by RAW 264.7 macrophage cells than by L929 fibroblast cells. They increase the expression of M1 macrophage marker genes, TNFα and CXCL10, and decrease the expression of M2 marker, CD206, indicating their ability to activate M1 phenotype and aid in tumor regression. They are also capable of delivering siRNA to human macrophage-like cells efficiently and inhibit ~59% of the expression of target MMP-9 protein. These results indicate that this modified curdlan-based nanoparticle is a promising vehicle for the delivery of siRNAs to macrophages, which could open up treatment strategies for a range of diseases.
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Affiliation(s)
- Rubaiya Yunus Basha
- Department of Biotechnology, Bhupat and Jyoti Mehta School of Biosciences, Indian Institute of Technology Madras, Chennai, 600036, India
| | - Geetha Venkatachalam
- Department of Biotechnology, Bhupat and Jyoti Mehta School of Biosciences, Indian Institute of Technology Madras, Chennai, 600036, India
| | - T S Sampath Kumar
- Department of Metallurgical and Materials Engineering, Indian Institute of Technology Madras, Chennai, 600 036, India
| | - Mukesh Doble
- Department of Biotechnology, Bhupat and Jyoti Mehta School of Biosciences, Indian Institute of Technology Madras, Chennai, 600036, India.
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5
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Multifunctional cationic polyurethanes designed for non-viral cancer gene therapy. Acta Biomater 2016; 30:155-167. [PMID: 26621697 DOI: 10.1016/j.actbio.2015.11.048] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2015] [Revised: 11/11/2015] [Accepted: 11/23/2015] [Indexed: 12/13/2022]
Abstract
Nano-polyplexes from bioreducible cationic polymers have a massive promise for cancer gene therapy. However, the feasibility of cationic polyurethanes for non-viral gene therapy is so far not well studied. In this work, a linear cationic polyurethane containing disulfide bonds, urethane linkages and protonable tertiary amino groups was successfully generated by stepwise polycondensation reaction between 2,2'-dithiodiethanol bis(p-nitrophenyl carbonate) and 1,4-bis(3-aminopropyl)piperazine (BAP). We confirmed that the cationic polyurethane (denoted as PUBAP) displayed superior gene delivery properties to its cationic polyamide analogue, thus causing higher in vitro transfection efficiency in MCF-7 and SKOV-3 cells. Besides, further folate-PEGylation and hydrophobic deoxycholic acid (DCA) conjugation to amino-containing PUBAP can be conducted to afford multifunctional polyurethane gene delivery system. After optimization, folate-decorated nano-polyplexes from the PUBAP conjugated with 8 folate-PEG chains and 12 DCA residues exhibited superb colloidal stability under physiological conditions, and performed rapid uptake via folate receptor-mediated endocytosis, efficient intracellular gene release and nucleus translocation into SKOV-3 cells in vitro and in vivo. Importantly, PUBAP based polyplexes possess low cytotoxicity as a result of PUBAP biodegradability. Therefore, marked growth inhibition of SKOV-3 tumor xenografted in Balb/c nude mice was achieved with negligible side effects on the mouse health after intravenous administration of PUBAP based polyplexes with a therapeutic plasmid encoding for TNF-related apoptosis-inducing ligand. This work provides a new insight into biomedical application of bio-responsive polyurethanes for cancer therapy. STATEMENT OF SIGNIFICANCE In this study, we have confirmed that disulfide-based cationic polyurethane presents a new non-viral vector for gene transfer and cancer gene therapy. The significance of this work includes: (1) design and synthesis of a group of novel disulfide-based cationic polyurethane by non-isocyanate chemistry; (2) comparative study of transfection activity between cationic polyurethanes and cationic polyamides; (3) feasibility of bioreducible cationic polyurethanes for in vivo cancer gene therapy.
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6
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Goyal AK, Garg T, Rath G, Gupta UD, Gupta P. Development and Characterization of Nanoembedded Microparticles for Pulmonary Delivery of Antitubercular Drugs against Experimental Tuberculosis. Mol Pharm 2015; 12:3839-50. [PMID: 26436948 DOI: 10.1021/acs.molpharmaceut.5b00016] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The foremost objective of the present research study was to develop and evaluate the potential of rifampicin (RIF) and isoniazid (INH) loaded spray dried nanoembedded microparticles against experimental tuberculosis (TB). In this study, RIF-INH loaded various formulations (chitosan, guar gum, mannan, and guar gum coated chitosan) were prepared by spray drying and characterized on the basis of in vitro as well as in vivo studies. Results showed that guar gum spray dried particles showed uniform size distribution with smooth surface as compare to mannan formulations. Guar gum batches exhibited excellent flow ability attributed to their optimum moisture content and uniform size distribution. The drug release showed the biphasic pattern of release, i.e., initial burst followed by a sustained release pattern. The preferential uptake of guar gum coated formulations suggested the presence and selective uptake capability of mannose moiety to the specific cell surface of macrophages. In vivo lung distribution study showed that guar gum coated chitosan (GCNP) batches demonstrated prolonged residence at the target site and thereby improve the therapeutic utility of drug with a significant reduction in systemic toxicity. Optimized drug loaded GCNP formulation has resulted in almost 5-fold reduction of the number of bacilli as compared to control group. Histopathology study also demonstrated that none of the treated groups show any evidence of lung tissue abnormality. Hence, GCNPs could be a promising carrier for selective delivery of antitubercular drugs to alveolar macrophages with the interception of minimal side effects, for efficient management of TB.
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Affiliation(s)
- Amit Kumar Goyal
- Nanomedicine Research Centre, Department of Pharmaceutics, ISF College of Pharmacy , Moga, Punjab, India
| | - Tarun Garg
- Nanomedicine Research Centre, Department of Pharmaceutics, ISF College of Pharmacy , Moga, Punjab, India.,Punjab Technical University , Kapurthala, Punjab, India
| | - Goutam Rath
- Nanomedicine Research Centre, Department of Pharmaceutics, ISF College of Pharmacy , Moga, Punjab, India.,Punjab Technical University , Kapurthala, Punjab, India
| | - Umesh Datta Gupta
- National Jalma Institute for Leprosy and Other Mycobacterial Diseases , Agra, Uttar Pradesh, India
| | - Pushpa Gupta
- National Jalma Institute for Leprosy and Other Mycobacterial Diseases , Agra, Uttar Pradesh, India
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7
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Scomparin A, Polyak D, Krivitsky A, Satchi-Fainaro R. Achieving successful delivery of oligonucleotides--From physico-chemical characterization to in vivo evaluation. Biotechnol Adv 2015; 33:1294-309. [PMID: 25916823 DOI: 10.1016/j.biotechadv.2015.04.008] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2014] [Revised: 04/08/2015] [Accepted: 04/16/2015] [Indexed: 12/20/2022]
Abstract
RNA interference is one of the most promising fields in modern medicine to treat several diseases, ranging from cancer to cardiac diseases, passing through viral infections and metabolic pathologies. Since the discovery of the potential therapeutic properties of non-self oligonucleotides, it was clear that it is important to develop delivery systems that are able to increase plasma stability and bestow membrane-crossing abilities to the oligonucleotides in order to reach their cytoplasmic targets. Polymer therapeutics, among other systems, are widely investigated as delivery systems for therapeutic agents, such as oligonucleotides. Physico-chemical characterization of the supramolecular polyplexes obtained upon charge interaction or covalent conjugation between the polymeric carrier and the oligonucleotides is critical. Appropriate characterization is fundamental in order to predict and understand the in vivo silencing efficacy and to avoid undesired side effects and toxicity profile. Shedding light on the physico-chemical and in vitro requirements of a polyplex leads to an efficient in vivo delivery system for RNAi therapeutics. In this review, we will present the most common techniques for characterization of obtained polymer/oligonucleotide polyplexes and an up-to-date state of the art in vivo preclinical and clinical studies. This is the first review to deal with the difficulties in appropriate characterization of small interfering RNA (siRNA) or microRNA (miRNA) polyplexes and conjugates which limit the clinical translation of this promising technology.
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Affiliation(s)
- Anna Scomparin
- Department of Physiology and Pharmacology, Sackler School of Medicine, Room 607, Tel Aviv University, Tel Aviv 69978, Israel
| | - Dina Polyak
- Department of Physiology and Pharmacology, Sackler School of Medicine, Room 607, Tel Aviv University, Tel Aviv 69978, Israel
| | - Adva Krivitsky
- Department of Physiology and Pharmacology, Sackler School of Medicine, Room 607, Tel Aviv University, Tel Aviv 69978, Israel
| | - Ronit Satchi-Fainaro
- Department of Physiology and Pharmacology, Sackler School of Medicine, Room 607, Tel Aviv University, Tel Aviv 69978, Israel.
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8
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Nuhn L, Braun L, Overhoff I, Kelsch A, Schaeffel D, Koynov K, Zentel R. Degradable Cationic Nanohydrogel Particles for Stimuli-Responsive Release of siRNA. Macromol Rapid Commun 2014; 35:2057-64. [DOI: 10.1002/marc.201400458] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2014] [Revised: 09/19/2014] [Indexed: 12/14/2022]
Affiliation(s)
- Lutz Nuhn
- Institute of Organic Chemistry; Johannes Gutenberg-University Mainz; Duesbergweg 10-14 D-55099 Mainz Germany
| | - Lydia Braun
- Institute of Organic Chemistry; Johannes Gutenberg-University Mainz; Duesbergweg 10-14 D-55099 Mainz Germany
| | - Iris Overhoff
- Institute of Organic Chemistry; Johannes Gutenberg-University Mainz; Duesbergweg 10-14 D-55099 Mainz Germany
| | - Annette Kelsch
- Institute of Organic Chemistry; Johannes Gutenberg-University Mainz; Duesbergweg 10-14 D-55099 Mainz Germany
| | - David Schaeffel
- Max Planck Institute for Polymer Research; Ackermannweg 10 D-55128 Mainz Germany
| | - Kaloian Koynov
- Max Planck Institute for Polymer Research; Ackermannweg 10 D-55128 Mainz Germany
| | - Rudolf Zentel
- Institute of Organic Chemistry; Johannes Gutenberg-University Mainz; Duesbergweg 10-14 D-55099 Mainz Germany
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9
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Novo L, Rizzo LY, Golombek SK, Dakwar GR, Lou B, Remaut K, Mastrobattista E, van Nostrum CF, Jahnen-Dechent W, Kiessling F, Braeckmans K, Lammers T, Hennink WE. Decationized polyplexes as stable and safe carrier systems for improved biodistribution in systemic gene therapy. J Control Release 2014; 195:162-175. [PMID: 25204289 DOI: 10.1016/j.jconrel.2014.08.028] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2014] [Revised: 08/12/2014] [Accepted: 08/30/2014] [Indexed: 10/24/2022]
Abstract
Many polycation-based gene delivery vectors show high transfection in vitro, but their cationic nature generally leads to significant toxicity and poor in vivo performance which significantly hampers their clinical applicability. Unlike conventional polycation-based systems, decationized polyplexes are based on hydrophilic and neutral polymers. They are obtained by a 3-step process: charge-driven condensation followed by disulfide crosslinking stabilization and finally polyplex decationization. They consist of a disulfide-crosslinked poly(hydroxypropyl methacrylamide) (pHPMA) core stably entrapping plasmid DNA (pDNA), surrounded by a shell of poly(ethylene glycol) (PEG). In the present paper the applicability of decationized polyplexes for systemic administration was evaluated. Cy5-labeled decationized polyplexes were evaluated for stability in plasma by fluorescence single particle tracking (fSPT), which technique showed stable size distribution for 48 h unlike its cationic counterpart. Upon the incubation of the polymers used for the formation of polyplexes with HUVEC cells, MTT assay showed excellent cytocompatibility of the neutral polymers. The safety was further demonstrated by a remarkable low teratogenicity and mortality activity of the polymers in a zebrafish assay, in great contrast with their cationic counterpart. Near infrared (NIR) dye-labeled polyplexes were evaluated for biodistribution and tumor accumulation by noninvasive optical imaging when administered systemically in tumor bearing mice. Decationized polyplexes exhibited an increased circulation time and higher tumor accumulation, when compared to their cationic precursors. Histology of tumors sections showed that decationized polyplexes induced reporter transgene expression in vivo. In conclusion, decationized polyplexes are a platform for safer polymeric vectors with improved biodistribution properties when systemically administered.
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Affiliation(s)
- Luís Novo
- Department of Pharmaceutics, Utrecht Institute for Pharmaceutical Sciences, Utrecht University, 3584 CG Utrecht, The Netherlands
| | - Larissa Y Rizzo
- Nanomedicines and Theranostics, Department for Experimental Molecular Imaging, University Hospital RWTH Aachen, Pauwelsstrasse 30, 52074 Aachen, Germany
| | - Susanne K Golombek
- Nanomedicines and Theranostics, Department for Experimental Molecular Imaging, University Hospital RWTH Aachen, Pauwelsstrasse 30, 52074 Aachen, Germany
| | - George R Dakwar
- Laboratory for General Biochemistry and Physical Pharmacy, Faculty of Pharmacy, Ghent University, Ghent Research Group on Nanomedicines, Harelbekestraat 72, 9000 Ghent, Belgium
| | - Bo Lou
- Department of Pharmaceutics, Utrecht Institute for Pharmaceutical Sciences, Utrecht University, 3584 CG Utrecht, The Netherlands
| | - Katrien Remaut
- Laboratory for General Biochemistry and Physical Pharmacy, Faculty of Pharmacy, Ghent University, Ghent Research Group on Nanomedicines, Harelbekestraat 72, 9000 Ghent, Belgium
| | - Enrico Mastrobattista
- Department of Pharmaceutics, Utrecht Institute for Pharmaceutical Sciences, Utrecht University, 3584 CG Utrecht, The Netherlands
| | - Cornelus F van Nostrum
- Department of Pharmaceutics, Utrecht Institute for Pharmaceutical Sciences, Utrecht University, 3584 CG Utrecht, The Netherlands
| | - Wilhelm Jahnen-Dechent
- Helmholtz Institute for Biomedical Engineering, Biointerface Laboratory, RWTH Aachen University, Aachen, Germany
| | - Fabian Kiessling
- Nanomedicines and Theranostics, Department for Experimental Molecular Imaging, University Hospital RWTH Aachen, Pauwelsstrasse 30, 52074 Aachen, Germany
| | - Kevin Braeckmans
- Laboratory for General Biochemistry and Physical Pharmacy, Faculty of Pharmacy, Ghent University, Ghent Research Group on Nanomedicines, Harelbekestraat 72, 9000 Ghent, Belgium.,Centre for Nano- and Biophotonics, Ghent University, Harelbekestraat 72, 9000 Ghent, Belgium
| | - Twan Lammers
- Department of Pharmaceutics, Utrecht Institute for Pharmaceutical Sciences, Utrecht University, 3584 CG Utrecht, The Netherlands.,Nanomedicines and Theranostics, Department for Experimental Molecular Imaging, University Hospital RWTH Aachen, Pauwelsstrasse 30, 52074 Aachen, Germany.,Department of Targeted Therapeutics, MIRA Institute for Biomedical Technology and Technical Medicine, University of Twente, Enschede, The Netherlands
| | - Wim E Hennink
- Department of Pharmaceutics, Utrecht Institute for Pharmaceutical Sciences, Utrecht University, 3584 CG Utrecht, The Netherlands
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10
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Novo L, van Gaal EVB, Mastrobattista E, van Nostrum CF, Hennink WE. Decationized crosslinked polyplexes for redox-triggered gene delivery. J Control Release 2013; 169:246-56. [PMID: 23583705 DOI: 10.1016/j.jconrel.2013.03.035] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2012] [Revised: 03/25/2013] [Accepted: 03/29/2013] [Indexed: 11/16/2022]
Abstract
The clinical applicability of polymers as gene delivery systems depends not only on their efficiency, but also on their safety. The cytotoxicity of these systems remains a major issue, mainly due to their cationic nature. Therefore, it is highly preferable to have a system based on biocompatible neutral polymers, lacking polycations, without compromising the DNA condensing and protecting capacities. Here, we introduce a concept to obtain a neutral polymeric gene delivery system, through a 3-step process (charge-driven condensation; stabilization through disulfide crosslinking; polyplex decationization) to generate polyplexes with a core of disulfide crosslinked poly(hydroxypropyl methacrylamide) (pHPMA) in which plasmid DNA (pDNA) is entrapped and a shell of poly(ethylene glycol) (PEG). The resulting polyplexes combine beneficial features of high and stable DNA loading capacity, stealth behavior and reduced toxicity. The nanoparticles are designed to release the pDNA after cellular uptake through cleavage of disulfide crosslinks within the intracellular reducing environment. This was shown by forced introduction of the polyplexes into the cytosol of HeLa cells by electroporation, which resulted in a high level of expression of the reporter gene. Additionally, the decationized polyplexes showed no interference on the cellular cell viability or metabolic activity (even at high dose) and no complex-induced membrane destabilization. Furthermore, decationized polyplexes showed a low degree of non-specific uptake, which is a highly favorable property for targeted therapy. Summarizing, the stabilized, decationized polyplexes presented here contribute to solve the high toxicity, low stability and lack of cellular/tissue specificity of cationic polymer based gene delivery systems.
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Affiliation(s)
- Luís Novo
- Department of Pharmaceutics, Utrecht Institute for Pharmaceutical Sciences, Utrecht University, 3584 CG Utrecht, The Netherlands
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11
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Binauld S, Scarano W, Stenzel MH. pH-Triggered Release of Platinum Drugs Conjugated to Micelles via an Acid-Cleavable Linker. Macromolecules 2012. [DOI: 10.1021/ma3012812] [Citation(s) in RCA: 65] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Sandra Binauld
- Centre for Advanced Macromolecular
Design (CAMD), University of New South Wales, Sydney, NSW 2052, Australia
| | - Wei Scarano
- Centre for Advanced Macromolecular
Design (CAMD), University of New South Wales, Sydney, NSW 2052, Australia
| | - Martina H. Stenzel
- Centre for Advanced Macromolecular
Design (CAMD), University of New South Wales, Sydney, NSW 2052, Australia
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12
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Luo K, Li C, Li L, She W, Wang G, Gu Z. Arginine functionalized peptide dendrimers as potential gene delivery vehicles. Biomaterials 2012; 33:4917-27. [PMID: 22484048 DOI: 10.1016/j.biomaterials.2012.03.030] [Citation(s) in RCA: 149] [Impact Index Per Article: 12.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2012] [Accepted: 03/08/2012] [Indexed: 01/24/2023]
Abstract
The quest for highly efficient and safe gene delivery systems has become the key factor for successful application of gene therapy. Peptide dendrimers are currently investigated as excellent candidates for non-viral gene delivery vectors. In this study, we report the synthesis and characterization of arginine functionalized peptide dendrimer-based vectors ranging from 5th generation (G5A) to 6th generation (G6A) via click chemistry, and their use for gene transfection in vitro and in vivo. The dendrimers can condense plasmid DNA (pDNA) and protect pDNAs from nuclease digestion. Both atomic force microscopy (AFM) and dynamic light scattering (DLS) revealed that the sizes of dendrimer/DNA particles were within 180-250 nm range. In vitro studies showed that the functionalized peptide dendrimers provided serum independent and high transfection efficiency on all studied cells, as over 2 fold higher than that of branched polyetherimide (PEI) in the presence of serum. Dendrimer G5A with molecular weight of 17 kDa demonstrated 6-fold transfection activity than PEI in breast tumor models, as well as good biosafety proved by in vitro and in vivo toxicity evaluation. However, G6A with molecular weight of 46 kDa showed much higher cytotoxicity. The functionalized dendrimer G5A with optimal generation may be therefore a potential candidate for gene delivery vehicle.
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Affiliation(s)
- Kui Luo
- National Engineering Research Center for Biomaterials, Sichuan University, Chengdu 610064, China
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13
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Lim EK, Yang J, Suh JS, Huh YM, Haam S. Synthesis of aminated polysorbate 80 for polyplex-mediated gene transfection. Biotechnol Prog 2011; 26:1528-33. [PMID: 20662085 DOI: 10.1002/btpr.475] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
To develop novel gene delivery carriers, aminated polysorbate 80 (P80-NH(2)) was synthesized with strong positively charged properties through the introduction of three amine groups. The resulting P80-NH(2) and DNA polyplex exhibited superb condensation abilities due to the high densities of positively charged amines groups. Size and surface charge of polyplex were shown to be well suited for cellular internalization. In addition, the P80-NH(2) /DNA polyplex demonstrated acceptable transfection efficiency in HeLa cells and was nontoxic relative to the conventional 25-kDa polyethyleneimine system.
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Affiliation(s)
- Eun-Kyung Lim
- Dept. of Chemical and Biomolecular Engineering, Yonsei University, Seoul 120-749, Korea
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14
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Novel nanotechnology approaches to diagnosis and therapy of ovarian cancer. Gynecol Oncol 2011; 120:393-403. [DOI: 10.1016/j.ygyno.2010.11.029] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2010] [Revised: 11/17/2010] [Accepted: 11/17/2010] [Indexed: 12/22/2022]
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15
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Varkouhi AK, Verheul RJ, Schiffelers RM, Lammers T, Storm G, Hennink WE. Gene silencing activity of siRNA polyplexes based on thiolated N,N,N-trimethylated chitosan. Bioconjug Chem 2010; 21:2339-46. [PMID: 21049986 DOI: 10.1021/bc1003789] [Citation(s) in RCA: 53] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
N,N,N-Trimethylated chitosan (TMC) is a biodegradable polymer emerging as a promising nonviral vector for nucleic acid and protein delivery. In the present study, we investigated whether the introduction of thiol groups in TMC enhances the extracellular stability of the complexes based on this polymer and promotes the intracellular release of siRNA. The gene silencing activity and the cellular cytotoxicity of polyplexes based on thiolated TMC were compared with those based on the nonthiolated counterpart and the regularly used lipidic transfection agent Lipofectamine. Incubation of H1299 human lung cancer cells expressing firefly luciferase with siRNA/thiolated TMC polyplexes resulted in 60-80% gene silencing activity, whereas complexes based on nonthiolated TMC showed less silencing (40%). The silencing activity of the complexes based on Lipofectamine 2000 was about 60-70%. Importantly, the TMC-SH polyplexes retained their silencing activity in the presence of hyaluronic acid, while nonthiolated TMC polyplexes hardly showed any silencing activity, demonstrating their stability against competing anionic macromolecules. Under the experimental conditions tested, the cytotoxicity of the thiolated and nonthiolated siRNA complexes was lower than those based on Lipofectamine. Given the good extracellular stability and good silencing activity, it is concluded that polyplexes based on TMC-SH are attractive systems for further in vivo evaluations.
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Affiliation(s)
- Amir K Varkouhi
- Department of Pharmaceutics, Utrecht Institute for Pharmaceutical Sciences, Faculty of Science, Utrecht University, Sorbonnelaan 16, 3584 CA Utrecht, The Netherlands
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16
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Thomas TP, Majoros I, Kotlyar A, Mullen D, Banaszak Holl MM, Baker JR. Cationic poly(amidoamine) dendrimer induces lysosomal apoptotic pathway at therapeutically relevant concentrations. Biomacromolecules 2009; 10:3207-14. [PMID: 19924846 PMCID: PMC2805189 DOI: 10.1021/bm900683r] [Citation(s) in RCA: 100] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Poly(amidoamine) (PAMAM) dendrimers carrying different amounts of surface amino groups were synthesized and tested for their effects on cellular cytotoxicity, lysosomal pH, and mitochondria-dependent apoptosis. In KB cells, the PAMAM dendrimers were taken up into the lysosomal compartment, and they increased the lysosomal pH and cytotoxicity as a function of the number of surface amino groups on the dendrimer. PAMAM dendrimers that were surface-neutralized by acetylation of >80% of the surface amino groups failed to show any cytotoxicity. The positively charged, amine-terminated PAMAM dendrimer induced cellular apoptosis, as demonstrated by mitochondrial membrane potential changes and caspase activity measurements. These results suggest that PAMAM dendrimers are endocytosed into the KB cells through a lysosomal pathway, leading to lysosomal alkalinization and induction of mitochondria-mediated apoptosis.
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Affiliation(s)
- Thommey P. Thomas
- Department of Internal Medicine, Division of Allergy, Michigan Nanotechnology Institute for Medicine and Biological Sciences, University of Michigan, 9220 MSRB III, Box 0648, Ann Arbor, Michigan 48109
| | - Istvan Majoros
- Department of Internal Medicine, Division of Allergy, Michigan Nanotechnology Institute for Medicine and Biological Sciences, University of Michigan, 9220 MSRB III, Box 0648, Ann Arbor, Michigan 48109
| | - Alina Kotlyar
- Department of Internal Medicine, Division of Allergy, Michigan Nanotechnology Institute for Medicine and Biological Sciences, University of Michigan, 9220 MSRB III, Box 0648, Ann Arbor, Michigan 48109
| | - Douglas Mullen
- Department of Internal Medicine, Division of Allergy, Michigan Nanotechnology Institute for Medicine and Biological Sciences, University of Michigan, 9220 MSRB III, Box 0648, Ann Arbor, Michigan 48109
- Department of Chemistry, University of Michigan, 930 North University Avenue, Ann Arbor, Michigan 48109
| | - Mark M. Banaszak Holl
- Department of Internal Medicine, Division of Allergy, Michigan Nanotechnology Institute for Medicine and Biological Sciences, University of Michigan, 9220 MSRB III, Box 0648, Ann Arbor, Michigan 48109
- Department of Chemistry, University of Michigan, 930 North University Avenue, Ann Arbor, Michigan 48109
| | - James R. Baker
- Department of Internal Medicine, Division of Allergy, Michigan Nanotechnology Institute for Medicine and Biological Sciences, University of Michigan, 9220 MSRB III, Box 0648, Ann Arbor, Michigan 48109
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17
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Kim KS, Lee JY, Kang YM, Kim ES, Lee B, Chun HJ, Kim JH, Min BH, Lee HB, Kim MS. Electrostatic Crosslinked In Situ–Forming In Vivo Scaffold for Rat Bone Marrow Mesenchymal Stem Cells. Tissue Eng Part A 2009; 15:3201-9. [DOI: 10.1089/ten.tea.2008.0704] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023] Open
Affiliation(s)
- Kyung Sook Kim
- Fusion Biotechnology Research Center, Korea Research Institute of Chemical Technology, Daejeon, Korea
- Department of Polymer Engineering, Pukyong National University, Busan, Korea
| | - Ju Young Lee
- Fusion Biotechnology Research Center, Korea Research Institute of Chemical Technology, Daejeon, Korea
| | - Yun Mi Kang
- Fusion Biotechnology Research Center, Korea Research Institute of Chemical Technology, Daejeon, Korea
| | - E Sle Kim
- Fusion Biotechnology Research Center, Korea Research Institute of Chemical Technology, Daejeon, Korea
| | - Bong Lee
- Department of Polymer Engineering, Pukyong National University, Busan, Korea
| | - Heung Jae Chun
- Department of Biomedical Sciences, College of Medicine, Catholic University, Seoul, Korea
| | - Jae Ho Kim
- Department of Molecular Science and Technology, Ajou University, Suwon, Korea
| | - Byoung Hyun Min
- Department of Molecular Science and Technology, Ajou University, Suwon, Korea
| | - Hai Bang Lee
- Fusion Biotechnology Research Center, Korea Research Institute of Chemical Technology, Daejeon, Korea
| | - Moon Suk Kim
- Fusion Biotechnology Research Center, Korea Research Institute of Chemical Technology, Daejeon, Korea
- Department of Molecular Science and Technology, Ajou University, Suwon, Korea
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