1
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Steffens RC, Thalmayr S, Weidinger E, Seidl J, Folda P, Höhn M, Wagner E. Modulating efficacy and cytotoxicity of lipoamino fatty acid nucleic acid carriers using disulfide or hydrophobic spacers. NANOSCALE 2024; 16:13988-14005. [PMID: 38984864 DOI: 10.1039/d4nr01357c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/11/2024]
Abstract
Double pH-responsive xenopeptides comprising polar ionizable succinoyl tetraethylene pentamine (Stp) motifs and lipophilic ionizable lipoamino fatty acids (LAFs) were recently found to efficiently transfect mRNA and pDNA at low doses. However, potency was often accompanied with cytotoxicity at higher doses. Insertion of bioreducible disulfide building blocks (ssbb) or non-reducible hydrophobic spacers between polar and apolar ionizable domains of LAF-Stp carriers should mitigate toxicity of xenopeptides. Carriers showed stable nucleic acid complexation and endosomal pH-dependent lytic activities, both of which were abolished after reductive cleavage of ssbb-containing carriers. For pDNA, U-shaped carriers with one Stp and two LAF units or bundle carriers with two Stps and four LAFs displayed highest potency. For mRNA, best transfection was achieved with bundle carriers with one Stp and four LAFs. Both the ssbb and hydrophobic spacer containing analogs displayed improved metabolic activity, reduced membrane damage, and improved cell growth. The ssbb carriers were most beneficial regarding living cell count and low apoptosis rates. Mechanistically, inserted spacers decelerated the transfection kinetics and altered the requirement of endosomal protonation. Overall, mRNA and pDNA carriers with improved biocompatibility have been designed, with their high potency illustrated in transfection of various cell lines including low passage number colon carcinoma cells.
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Affiliation(s)
- Ricarda C Steffens
- Pharmaceutical Biotechnology, Department of Pharmacy, LMU Munich, Butenandtstr. 5-13, 81377 Munich, Germany.
- Center for NanoScience (CeNS), LMU Munich, 80799 Munich, Germany
| | - Sophie Thalmayr
- Pharmaceutical Biotechnology, Department of Pharmacy, LMU Munich, Butenandtstr. 5-13, 81377 Munich, Germany.
- CNATM - Cluster for Nucleic Acid Therapeutics Munich, Germany
| | - Eric Weidinger
- Pharmaceutical Biotechnology, Department of Pharmacy, LMU Munich, Butenandtstr. 5-13, 81377 Munich, Germany.
| | - Johanna Seidl
- Pharmaceutical Biotechnology, Department of Pharmacy, LMU Munich, Butenandtstr. 5-13, 81377 Munich, Germany.
- CNATM - Cluster for Nucleic Acid Therapeutics Munich, Germany
| | - Paul Folda
- Pharmaceutical Biotechnology, Department of Pharmacy, LMU Munich, Butenandtstr. 5-13, 81377 Munich, Germany.
| | - Miriam Höhn
- Pharmaceutical Biotechnology, Department of Pharmacy, LMU Munich, Butenandtstr. 5-13, 81377 Munich, Germany.
| | - Ernst Wagner
- Pharmaceutical Biotechnology, Department of Pharmacy, LMU Munich, Butenandtstr. 5-13, 81377 Munich, Germany.
- Center for NanoScience (CeNS), LMU Munich, 80799 Munich, Germany
- CNATM - Cluster for Nucleic Acid Therapeutics Munich, Germany
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2
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Opsomer L, Jana S, Mertens I, Cui X, Hoogenboom R, Sanders NN. Efficient in vitro and in vivo transfection of self-amplifying mRNA with linear poly(propylenimine) and poly(ethylenimine-propylenimine) random copolymers as non-viral carriers. J Mater Chem B 2024; 12:3927-3946. [PMID: 38563779 DOI: 10.1039/d3tb03003b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/04/2024]
Abstract
Messenger RNA (mRNA) based vaccines have been introduced worldwide to combat the Covid-19 pandemic. These vaccines consist of non-amplifying mRNA formulated in lipid nanoparticles (LNPs). Consequently, LNPs are considered benchmark non-viral carriers for nucleic acid delivery. However, the formulation and manufacturing of these mRNA-LNP nanoparticles are expensive and time-consuming. Therefore, we used self-amplifying mRNA (saRNA) and synthesized novel polymers as alternative non-viral carrier platform to LNPs, which enable a simple, rapid, one-pot formulation of saRNA-polyplexes. Our novel polymer-based carrier platform consists of randomly concatenated ethylenimine and propylenimine comonomers, resulting in linear, poly(ethylenimine-ran-propylenimine) (L-PEIx-ran-PPIy) copolymers with controllable degrees of polymerization. Here we demonstrate in multiple cell lines, that our saRNA-polyplexes show comparable to higher in vitro saRNA transfection efficiencies and higher cell viabilities compared to formulations with Lipofectamine MessengerMAX™ (LFMM), a commercial, lipid-based carrier considered to be the in vitro gold standard carrier. This is especially true for our in vitro best performing saRNA-polyplexes with N/P 5, which are characterised with a size below 100 nm, a positive zeta potential, a near 100% encapsulation efficiency, a high retention capacity and the ability to protect the saRNA from degradation mediated by RNase A. Furthermore, an ex vivo hemolysis assay with pig red blood cells demonstrated that the saRNA-polyplexes exhibit negligible hemolytic activity. Finally, a bioluminescence-based in vivo study was performed over a 35-day period, and showed that the polymers result in a higher and prolonged bioluminescent signal compared to naked saRNA and L-PEI based polyplexes. Moreover, the polymers show different expression profiles compared to those of LNPs, with one of our new polymers (L-PPI250) demonstrating a higher sustained expression for at least 35 days after injection.
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Affiliation(s)
- Lisa Opsomer
- Laboratory of Gene Therapy, Department of Veterinary and Biosciences, Faculty of Veterinary Medicine, Ghent University, B-9820 Merelbeke, Belgium.
| | - Somdeb Jana
- Supramolecular Chemistry Group, Centre of Macromolecular Chemistry (CMaC), Department of Organic and Macromolecular Chemistry, Ghent University, 9000 Ghent, Belgium.
| | - Ine Mertens
- Supramolecular Chemistry Group, Centre of Macromolecular Chemistry (CMaC), Department of Organic and Macromolecular Chemistry, Ghent University, 9000 Ghent, Belgium.
| | - Xiaole Cui
- Laboratory of Gene Therapy, Department of Veterinary and Biosciences, Faculty of Veterinary Medicine, Ghent University, B-9820 Merelbeke, Belgium.
| | - Richard Hoogenboom
- Supramolecular Chemistry Group, Centre of Macromolecular Chemistry (CMaC), Department of Organic and Macromolecular Chemistry, Ghent University, 9000 Ghent, Belgium.
| | - Niek N Sanders
- Laboratory of Gene Therapy, Department of Veterinary and Biosciences, Faculty of Veterinary Medicine, Ghent University, B-9820 Merelbeke, Belgium.
- Cancer Research Institute (CRIG), Ghent University, B-9000 Ghent, Belgium
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3
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Mehta MJ, Kim HJ, Lim SB, Naito M, Miyata K. Recent Progress in the Endosomal Escape Mechanism and Chemical Structures of Polycations for Nucleic Acid Delivery. Macromol Biosci 2024; 24:e2300366. [PMID: 38226723 DOI: 10.1002/mabi.202300366] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2023] [Revised: 12/22/2023] [Indexed: 01/17/2024]
Abstract
Nucleic acid-based therapies are seeing a spiralling surge. Stimuli-responsive polymers, especially pH-responsive ones, are gaining widespread attention because of their ability to efficiently deliver nucleic acids. These polymers can be synthesized and modified according to target requirements, such as delivery sites and the nature of nucleic acids. In this regard, the endosomal escape mechanism of polymer-nucleic acid complexes (polyplexes) remains a topic of considerable interest owing to various plausible escape mechanisms. This review describes current progress in the endosomal escape mechanism of polyplexes and state-of-the-art chemical designs for pH-responsive polymers. The importance is also discussed of the acid dissociation constant (i.e., pKa) in designing the new generation of pH-responsive polymers, along with assays to monitor and quantify the endosomal escape behavior. Further, the use of machine learning is addressed in pKa prediction and polymer design to find novel chemical structures for pH responsiveness. This review will facilitate the design of new pH-responsive polymers for advanced and efficient nucleic acid delivery.
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Affiliation(s)
- Mohit J Mehta
- Department of Biological Sciences and Bioengineering, Inha University, 100 Inha-ro, Michuhol-gu, Incheon, 22212, Republic of Korea
| | - Hyun Jin Kim
- Department of Biological Sciences and Bioengineering, Inha University, 100 Inha-ro, Michuhol-gu, Incheon, 22212, Republic of Korea
- Department of Biological Engineering, College of Engineering, Inha University, 100 Inha-ro, Michuhol-gu, Incheon, 22212, Republic of Korea
| | - Sung Been Lim
- Department of Biological Sciences and Bioengineering, Inha University, 100 Inha-ro, Michuhol-gu, Incheon, 22212, Republic of Korea
| | - Mitsuru Naito
- Department of Materials Engineering, Graduate School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-8656, Japan
| | - Kanjiro Miyata
- Department of Materials Engineering, Graduate School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-8656, Japan
- Department of Bioengineering, Graduate School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-8656, Japan
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4
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Steffens RC, Folda P, Fendler NL, Höhn M, Bücher-Schossau K, Kempter S, Snyder NL, Hartmann L, Wagner E, Berger S. GalNAc- or Mannose-PEG-Functionalized Polyplexes Enable Effective Lectin-Mediated DNA Delivery. Bioconjug Chem 2024; 35:351-370. [PMID: 38440876 DOI: 10.1021/acs.bioconjchem.3c00546] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/06/2024]
Abstract
A cationic, dendrimer-like oligo(aminoamide) carrier with four-arm topology based on succinoyl tetraethylene pentamine and histidines, cysteines, and N-terminal azido-lysines was screened for plasmid DNA delivery on various cell lines. The incorporated azides allow modification with various shielding agents of different polyethylene glycol (PEG) lengths and/or different ligands by copper-free click reaction, either before or after polyplex formation. Prefunctionalization was found to be advantageous over postfunctionalization in terms of nanoparticle formation, stability, and efficacy. A length of 24 ethylene oxide repetition units and prefunctionalization of ≥50% of azides per carrier promoted optimal polyplex shielding. PEG shielding resulted in drastically reduced DNA transfer, which could be successfully restored by active lectin targeting via novel GalNAc or mannose ligands, enabling enhanced receptor-mediated endocytosis of the carrier system. The involvement of the asialoglycoprotein receptor (ASGPR) in the uptake of GalNAc-functionalized polyplexes was confirmed in the ASGPR-positive hepatocarcinoma cell lines HepG2 and Huh7. Mannose-modified polyplexes showed superior cellular uptake and transfection efficacy compared to unmodified and shielded polyplexes in mannose-receptor-expressing dendritic cell-like DC2.4 cells.
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Affiliation(s)
- Ricarda C Steffens
- Pharmaceutical Biotechnology, Department of Pharmacy, Ludwig-Maximilians-Universität (LMU) Munich, 81377 Munich, Germany
- Center for NanoScience (CeNS), LMU Munich, 80799 Munich, Germany
| | - Paul Folda
- Pharmaceutical Biotechnology, Department of Pharmacy, Ludwig-Maximilians-Universität (LMU) Munich, 81377 Munich, Germany
| | - Nikole L Fendler
- Department of Chemistry, Davidson College, Davidson, North Carolina 28035, United States
| | - Miriam Höhn
- Pharmaceutical Biotechnology, Department of Pharmacy, Ludwig-Maximilians-Universität (LMU) Munich, 81377 Munich, Germany
| | - Katharina Bücher-Schossau
- Institute of Organic Chemistry and Macromolecular Chemistry, Heinrich-Heine-University Düsseldorf, Universitätsstr. 1, 40225 Düsseldorf, Germany
| | - Susanne Kempter
- Faculty of Physics, LMU Munich, 80539 Munich, Germany
- Center for NanoScience (CeNS), LMU Munich, 80799 Munich, Germany
| | - Nicole L Snyder
- Department of Chemistry, Davidson College, Davidson, North Carolina 28035, United States
| | - Laura Hartmann
- Institute of Organic Chemistry and Macromolecular Chemistry, Heinrich-Heine-University Düsseldorf, Universitätsstr. 1, 40225 Düsseldorf, Germany
- Institute for Macromolecular Chemistry, University Freiburg, Stefan-Meier-Str. 31, 79104 Freiburg im Breisgau, Germany
| | - Ernst Wagner
- Pharmaceutical Biotechnology, Department of Pharmacy, Ludwig-Maximilians-Universität (LMU) Munich, 81377 Munich, Germany
- Center for NanoScience (CeNS), LMU Munich, 80799 Munich, Germany
| | - Simone Berger
- Pharmaceutical Biotechnology, Department of Pharmacy, Ludwig-Maximilians-Universität (LMU) Munich, 81377 Munich, Germany
- Center for NanoScience (CeNS), LMU Munich, 80799 Munich, Germany
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5
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Zhang J, Gao M, Gao Z, Hou Y, Liang J, Lu J, Gao S, Li B, Gao Y, Chen J. Chondroitin sulfate modified calcium phosphate nanoparticles for efficient transfection via caveolin-mediated endocytosis. Int J Biol Macromol 2023; 253:127046. [PMID: 37742889 DOI: 10.1016/j.ijbiomac.2023.127046] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2023] [Revised: 09/06/2023] [Accepted: 09/21/2023] [Indexed: 09/26/2023]
Abstract
Efficient transfection remains a challenge for gene delivery in both cell biological scientific research and gene therapeutic fields. Existing transfection strategies rarely pay attention to altering the endocytosis pathway of nanocarriers for transfection efficiency improvement. In this work, we innovatively postulated that calcium phosphate nanoparticles coated with glycosaminoglycan could be internalized by cells mainly through caveolin-mediated endocytosis pathway allowing genes to bypass lysosome route, and hence enhance the transfection efficiency. To achieve this, we developed calcium phosphate nanoparticles (CP-ALN-CS) coated with chondroitin sulfate (CS) and alendronate (ALN) in a modular manner. The CP-ALN-CS had a hydrodynamic size of 131.0 ± 8.7 nm and exhibited favorable dispersity, stability, and resistance to nuclease degradation. Unlike conventional calcium phosphate and PEI-based transfection, CP-ALN-CS exhibited efficient cellular uptake with co-localization in Golgi apparatus and endoplasmic reticulum. Through bypassing the lysosome involved cellular uptake route, CP-ALN-CS can effectively protect genes from degradation and relieve cytotoxicity. After loading plasmid DNA, CP-ALN-CS showed extraordinary transfection efficiency in HEK 293T cells, outperforming the PEI which is considered as the gold standard. The current work provides a novel and facile approach to improve gene transfection efficiency and is valuable for the design of next-generation in vitro transfection reagents.
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Affiliation(s)
- Jiarong Zhang
- School of Life Sciences and Health Engineering, Jiangnan University, Wuxi 214122, China
| | - Min Gao
- School of Life Sciences and Health Engineering, Jiangnan University, Wuxi 214122, China.
| | - Zhuoya Gao
- School of Life Sciences and Health Engineering, Jiangnan University, Wuxi 214122, China
| | - Yingchao Hou
- School of Life Sciences and Health Engineering, Jiangnan University, Wuxi 214122, China
| | - Jing Liang
- School of Life Sciences and Health Engineering, Jiangnan University, Wuxi 214122, China
| | - Jinjin Lu
- School of Life Sciences and Health Engineering, Jiangnan University, Wuxi 214122, China
| | - Shuai Gao
- School of Life Sciences and Health Engineering, Jiangnan University, Wuxi 214122, China
| | - Boqi Li
- School of Life Sciences and Health Engineering, Jiangnan University, Wuxi 214122, China
| | - Yufeng Gao
- School of Life Sciences and Health Engineering, Jiangnan University, Wuxi 214122, China
| | - Jinghua Chen
- School of Life Sciences and Health Engineering, Jiangnan University, Wuxi 214122, China.
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6
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Lee J, Kwon YE, Edwards SD, Guim H, Jae Jeong K. Improved biocompatibility of dendrimer-based gene delivery by histidine-modified nuclear localization signals. Int J Pharm 2023; 644:123299. [PMID: 37558147 DOI: 10.1016/j.ijpharm.2023.123299] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2023] [Revised: 07/29/2023] [Accepted: 08/06/2023] [Indexed: 08/11/2023]
Abstract
Polyamidoamine (PAMAM) dendrimers have been explored as an alternative to polyethylenimine (PEI) as a gene delivery carrier because of their relatively low cytotoxicity and excellent biocompatibility. The transfection efficiency of PAMAM dendrimers can be improved by the addition of nuclear localization signal (NLS), a positively charged peptide sequence recognized by cargo proteins in the cytoplasm for nuclear transport. However, increased positive charges from NLS can cause damage to the cytoplasmic and mitochondrial membranes and lead to reactive oxygen species (ROS)-induced cytotoxicity. This negative effect of NLS can be negated without a significant reduction in transfection efficiency by adding histidine, an essential amino acid known as a natural antioxidant, to NLS. However, little is known about the exact mechanism by which histidine reduces cytotoxicity of NLS-modified dendrimers. In this study, we selected cystamine core PAMAM dendrimer generation 2 (cPG2) and conjugated it with NLS derived from Merkel cell polyomavirus large T antigen and histidine (n = 0-3) to improve transfection efficiency and reduce cytoxicity. NLS-modified cPG2 derivatives showed similar or higher transfection efficiency than PEI 25 kDa in NIH3T3 and human mesenchymal stem cells (hMSC). The cytotoxicity of NLS-modified cPG2 derivatives was substantially lower than PEI 25 kDa and was further reduced as the number of histidine in NLS increased. To understand the mechanism of cytoprotective effect of histidine-conjugated NLS, we examined ROS scavenging, hydroxyl radical generation and mitochondrial membrane potential as a function of the number of histidine in NLS. As the number of hisidine increased, cPG2 scavenged ROS more effectively as evidenced by the hydroxyl radical antioxidant capacity (HORAC) assay. This was consistent with the reduced intracellular hydroxyl radical concentration measured by 2',7'-dichlorodihydrofluorescein diacetate (DCFDA) assay in NIH3T3. Finally, fluorescence imaging with JC-1 confirmed that the mitochondrial membranes of NIH 3T3 were well-protected during the transfection when NLS contained histidine. These experimental results confirm the hypothesis that histidine residues scavenge ROS that is generated during the transfection process, preventing the excessive damage to mitochondrial membranes, leading to reduced cytotoxicity.
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Affiliation(s)
- Jeil Lee
- Department of Chemical Engineering, University of New Hampshire, Durham, New Hampshire 03824, United States
| | - Yong-Eun Kwon
- Center for Scientific Instrumentation, Korea Basic Science Institute, 169-148 Gwahak-ro, Yuseong-gu, Daejeon 34133, Republic of Korea
| | - Seth D Edwards
- Department of Chemical Engineering, University of New Hampshire, Durham, New Hampshire 03824, United States
| | - Hwanuk Guim
- Research Center for Materials Analysis, Korea Basic Science Institute, 169-148 Gwahak-ro, Yuseong-gu, Daejeon 34133, Republic of Korea
| | - Kyung Jae Jeong
- Department of Chemical Engineering, University of New Hampshire, Durham, New Hampshire 03824, United States.
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7
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Uchida S, Lau CYJ, Oba M, Miyata K. Polyplex designs for improving the stability and safety of RNA therapeutics. Adv Drug Deliv Rev 2023; 199:114972. [PMID: 37364611 DOI: 10.1016/j.addr.2023.114972] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2023] [Revised: 06/15/2023] [Accepted: 06/21/2023] [Indexed: 06/28/2023]
Abstract
Nanoparticle-based delivery systems have contributed to the recent clinical success of RNA therapeutics, including siRNA and mRNA. RNA delivery using polymers has several distinct properties, such as enabling RNA delivery into extra-hepatic organs, modulation of immune responses to RNA, and regulation of intracellular RNA release. However, delivery systems should overcome safety and stability issues to achieve widespread therapeutic applications. Safety concerns include direct damage to cellular components, innate and adaptive immune responses, complement activation, and interaction with surrounding molecules and cells in the blood circulation. The stability of the delivery systems should balance extracellular RNA protection and controlled intracellular RNA release, which requires optimization for each RNA species. Further, polymer designs for improving safety and stability often conflict with each other. This review covers advances in polymer-based approaches to address these issues over several years, focusing on biological understanding and design concepts for delivery systems rather than material chemistry.
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Affiliation(s)
- Satoshi Uchida
- Department of Advanced Nanomedical Engineering, Medical Research Institute, Tokyo Medical and Dental University (TMDU), 1-5-45 Yushima, Bunkyo-ku, Tokyo, 113-8510, Japan; Medical Chemistry, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, 1-5 Shimogamohangi-cho, Sakyo-ku, Kyoto, 606-0823, Japan; Innovation Center of NanoMedicine (iCONM), Kawasaki Institute of Industrial Promotion, 3-25-14 Tonomachi, Kawasaki-ku, Kawasaki, 210-0821, Japan.
| | - Chun Yin Jerry Lau
- Department of Materials Engineering, Graduate School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
| | - Makoto Oba
- Medical Chemistry, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, 1-5 Shimogamohangi-cho, Sakyo-ku, Kyoto, 606-0823, Japan
| | - Kanjiro Miyata
- Department of Materials Engineering, Graduate School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan; Department of Bioengineering, Graduate School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan.
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8
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Baghel M, Sakure K, Giri TK, Maiti S, Nakhate KT, Ojha S, Sharma C, Agrawal Y, Goyal S, Badwaik H. Carboxymethylated Gums and Derivatization: Strategies and Significance in Drug Delivery and Tissue Engineering. Pharmaceuticals (Basel) 2023; 16:ph16050776. [PMID: 37242559 DOI: 10.3390/ph16050776] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2023] [Revised: 04/30/2023] [Accepted: 05/04/2023] [Indexed: 05/28/2023] Open
Abstract
Natural polysaccharides have been widely exploited in drug delivery and tissue engineering research. They exhibit excellent biocompatibility and fewer adverse effects; however, it is challenging to assess their bioactivities to that of manufactured synthetics because of their intrinsic physicochemical characteristics. Studies showed that the carboxymethylation of polysaccharides considerably increases the aqueous solubility and bioactivities of inherent polysaccharides and offers structural diversity, but it also has some limitations that can be resolved by derivatization or the grafting of carboxymethylated gums. The swelling ratio, flocculation capacity, viscosity, partition coefficient, metal absorption properties, and thermosensitivity of natural polysaccharides have been improved as a result of these changes. In order to create better and functionally enhanced polysaccharides, researchers have modified the structures and properties of carboxymethylated gums. This review summarizes the various ways of modifying carboxymethylated gums, explores the impact that molecular modifications have on their physicochemical characteristics and bioactivities, and sheds light on various applications for the derivatives of carboxymethylated polysaccharides.
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Affiliation(s)
- Madhuri Baghel
- Department of Pharmaceutical Chemistry, Shri Shankaracharya Institute of Pharmaceutical Sciences and Research, Junwani, Bhilai 490020, Chhattisgarh, India
| | - Kalyani Sakure
- Department of Pharmaceutics, Rungta College of Pharmaceutical Sciences and Research, Kurud Road, Kohka, Bhilai 490024, Chhattisgarh, India
| | - Tapan Kumar Giri
- Department of Pharmaceutical Technology, Jadavpur University, Kolkata 700032, West Bengal, India
| | - Sabyasachi Maiti
- Department of Pharmacy, Indira Gandhi National Tribal University, Amarkantak 484887, Madhya Pradesh, India
| | - Kartik T Nakhate
- Department of Pharmacology, Shri Vile Parle Kelavani Mandal's Institute of Pharmacy, Dhule 424001, Maharashtra, India
| | - Shreesh Ojha
- Department of Pharmacology and Therapeutics, College of Medicine and Health Sciences, United Arab Emirates University, Al Ain P.O. Box 15551, United Arab Emirates
| | - Charu Sharma
- Department of Internal Medicine, College of Medicine and Health Sciences, United Arab Emirates University, Al Ain P.O. Box 15551, United Arab Emirates
| | - Yogeeta Agrawal
- Department of Pharmaceutics, Shri Vile Parle Kelavani Mandal's Institute of Pharmacy, Dhule 424001, Maharashtra, India
| | - Sameer Goyal
- Department of Pharmacology, Shri Vile Parle Kelavani Mandal's Institute of Pharmacy, Dhule 424001, Maharashtra, India
| | - Hemant Badwaik
- Department of Pharmaceutical Chemistry, Shri Shankaracharya Institute of Pharmaceutical Sciences and Research, Junwani, Bhilai 490020, Chhattisgarh, India
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9
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Polyethylenimine, an Autophagy-Inducing Platinum-Carbene-Based Drug Carrier with Potent Toxicity towards Glioblastoma Cancer Stem Cells. Cancers (Basel) 2022; 14:cancers14205057. [PMID: 36291841 PMCID: PMC9599868 DOI: 10.3390/cancers14205057] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2022] [Revised: 10/10/2022] [Accepted: 10/11/2022] [Indexed: 11/17/2022] Open
Abstract
The difficulty involved in the treatment of many tumours due to their recurrence and resistance to chemotherapy is tightly linked to the presence of cancer stem cells (CSCs). This CSC sub-population is distinct from the majority of cancer cells of the tumour bulk. Indeed, CSCs have increased mitochondrial mass that has been linked to increased sensitivity to mitochondrial targeting compounds. Thus, a platinum-based polyethylenimine (PEI) polymer-drug conjugate (PDC) was assessed as a potential anti-CSC therapeutic since it has previously displayed mitochondrial accumulation. Our results show that CSCs have increased specific sensitivity to the PEI carrier and to the PDC. The mechanism of cell death seems to be necrotic in nature, with an absence of apoptotic markers. Cell death is accompanied by the induction of a protective autophagy. The interference in the balance of this pathway, which is highly important for CSCs, may be responsible for a partial reversion of the stem-like phenotype observed with prolonged PEI and PDC treatment. Several markers also indicate the cell death mode to be capable of inducing an anti-cancer immune response. This study thus indicates the potential therapeutic perspectives of polycations against CSCs.
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10
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Butt AM, Abdullah N, Rani NNIM, Ahmad N, Amin MCIM. Endosomal Escape of Bioactives Deployed via Nanocarriers: Insights Into the Design of Polymeric Micelles. Pharm Res 2022; 39:1047-1064. [PMID: 35619043 DOI: 10.1007/s11095-022-03296-w] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2021] [Accepted: 05/17/2022] [Indexed: 10/18/2022]
Abstract
Cytoplasmic delivery of bioactives requires the use of strategies such as active transport, electroporation, or the use of nanocarriers such as polymeric nanoparticles, liposomes, micelles, and dendrimers. It is essential to deliver bioactive molecules in the cytoplasm to achieve targeted effects by enabling organelle targeting. One of the biggest bottlenecks in the successful cytoplasmic delivery of bioactives through nanocarriers is their sequestration in the endosomes that leads to the degradation of drugs by progressing to lysosomes. In this review, we discussed mechanisms by which nanocarriers are endocytosed, the mechanisms of endosomal escape, and more importantly, the strategies that can be and have been employed for their escape from the endosomes are summarized. Like other nanocarriers, polymeric micelles can be designed for endosomal escape, however, a careful control is needed in their design to balance between the possible toxicity and endosomal escape efficiency. Keeping this in view, polyion complex micelles, and polymers that have the ability to escape the endosome, are fully discussed. Finally, we provided some perspectives for designing the polymeric micelles for efficient cytoplasmic delivery of bioactive agents through endosomal escape.
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Affiliation(s)
- Adeel Masood Butt
- Institute of Pharmaceutical Sciences, University of Veterinary and Animal Sciences, Lahore, 54000, Pakistan.
| | - Nabiha Abdullah
- Department of Pharmacy, Quaid-i-Azam University, 45320, Islamabad, Pakistan.,Department of Chemistry, Quaid-i-Azam University, 45320, Islamabad, Pakistan
| | - Nur Najihah Izzati Mat Rani
- Faculty of Pharmacy and Health Sciences, Universiti Kuala Lumpur Royal College of Medicine Perak, 30450, Ipoh, Perak, Malaysia.,Centre for Drug Delivery Technology, Faculty of Pharmacy, Universiti Kebangsaan Malaysia, Jalan Raja Muda Abdul Aziz, 50300, Kuala Lumpur, Malaysia
| | - Naveed Ahmad
- Department of Pharmaceutics, College of Pharmacy, Jouf University, Sakaka, 72388, Aljouf, Saudi Arabia
| | - Mohd Cairul Iqbal Mohd Amin
- Centre for Drug Delivery Technology, Faculty of Pharmacy, Universiti Kebangsaan Malaysia, Jalan Raja Muda Abdul Aziz, 50300, Kuala Lumpur, Malaysia.
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11
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Jerzykiewicz J, Czogalla A. Polyethyleneimine-Based Lipopolyplexes as Carriers in Anticancer Gene Therapies. MATERIALS 2021; 15:ma15010179. [PMID: 35009324 PMCID: PMC8746209 DOI: 10.3390/ma15010179] [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: 11/18/2021] [Revised: 12/06/2021] [Accepted: 12/20/2021] [Indexed: 12/12/2022]
Abstract
Recent years have witnessed rapidly growing interest in application of gene therapies for cancer treatment. However, this strategy requires nucleic acid carriers that are both effective and safe. In this context, non-viral vectors have advantages over their viral counterparts. In particular, lipopolyplexes—nanocomplexes consisting of nucleic acids condensed with polyvalent molecules and enclosed in lipid vesicles—currently offer great promise. In this article, we briefly review the major aspects of developing such non-viral vectors based on polyethyleneimine and outline their properties in light of anticancer therapeutic strategies. Finally, examples of current in vivo studies involving such lipopolyplexes and possibilities for their future development are presented.
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12
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Kumar R, Santa Chalarca CF, Bockman MR, Bruggen CV, Grimme CJ, Dalal RJ, Hanson MG, Hexum JK, Reineke TM. Polymeric Delivery of Therapeutic Nucleic Acids. Chem Rev 2021; 121:11527-11652. [PMID: 33939409 DOI: 10.1021/acs.chemrev.0c00997] [Citation(s) in RCA: 149] [Impact Index Per Article: 49.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
The advent of genome editing has transformed the therapeutic landscape for several debilitating diseases, and the clinical outlook for gene therapeutics has never been more promising. The therapeutic potential of nucleic acids has been limited by a reliance on engineered viral vectors for delivery. Chemically defined polymers can remediate technological, regulatory, and clinical challenges associated with viral modes of gene delivery. Because of their scalability, versatility, and exquisite tunability, polymers are ideal biomaterial platforms for delivering nucleic acid payloads efficiently while minimizing immune response and cellular toxicity. While polymeric gene delivery has progressed significantly in the past four decades, clinical translation of polymeric vehicles faces several formidable challenges. The aim of our Account is to illustrate diverse concepts in designing polymeric vectors towards meeting therapeutic goals of in vivo and ex vivo gene therapy. Here, we highlight several classes of polymers employed in gene delivery and summarize the recent work on understanding the contributions of chemical and architectural design parameters. We touch upon characterization methods used to visualize and understand events transpiring at the interfaces between polymer, nucleic acids, and the physiological environment. We conclude that interdisciplinary approaches and methodologies motivated by fundamental questions are key to designing high-performing polymeric vehicles for gene therapy.
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Affiliation(s)
- Ramya Kumar
- Department of Chemistry, University of Minnesota, Minneapolis, Minnesota 55455, United States
| | | | - Matthew R Bockman
- Department of Chemistry, University of Minnesota, Minneapolis, Minnesota 55455, United States
| | - Craig Van Bruggen
- Department of Chemistry, University of Minnesota, Minneapolis, Minnesota 55455, United States
| | - Christian J Grimme
- Department of Chemical Engineering and Materials Science, University of Minnesota, Minneapolis, Minnesota 55455, United States
| | - Rishad J Dalal
- Department of Chemistry, University of Minnesota, Minneapolis, Minnesota 55455, United States
| | - Mckenna G Hanson
- Department of Chemistry, University of Minnesota, Minneapolis, Minnesota 55455, United States
| | - Joseph K Hexum
- Department of Chemistry, University of Minnesota, Minneapolis, Minnesota 55455, United States
| | - Theresa M Reineke
- Department of Chemistry, University of Minnesota, Minneapolis, Minnesota 55455, United States
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13
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Liu J, Zhao L, Shi L, Yuan Y, Fu D, Ye Z, Li Q, Deng Y, Liu X, Lv Q, Cheng Y, Xu Y, Jiang X, Wang G, Wang L, Wang Z. A Sequentially Responsive Nanosystem Breaches Cascaded Bio-barriers and Suppresses P-Glycoprotein Function for Reversing Cancer Drug Resistance. ACS APPLIED MATERIALS & INTERFACES 2020; 12:54343-54355. [PMID: 32959645 DOI: 10.1021/acsami.0c13852] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Cancer chemotherapy is challenged by multidrug resistance (MDR) mainly attributed to overexpressed transmembrane efflux pump P-glycoprotein (P-gp) in cancer cells. Improving drug delivery efficacy while co-delivering P-gp inhibitors to suppress drug efflux is an often-used nanostrategy for combating MDR, which is however challenged by cascaded bio-barriers en route to cancer cells and P-gp inhibitors' adverse effects. To effectively breach the cascaded bio-barriers while avoiding P-gp inhibitors' adverse effects, a stealthy, sequentially responsive doxorubicin (DOX) delivery nanosystem (RCMSNs) is fabricated, composed of an extracellular-tumor-acidity-responsive polymer shell (PEG-b-PLLDA), pH/redox dual-responsive mesoporous silica nanoparticle-based carriers (MSNs-SS-Py), and cationic β-cyclodextrin-PEI (CD-PEI) gatekeepers. The PEG-b-PLLDA corona makes RCMSNs stealthy with prolonged blood circulation time. Once tumors are reached, extracellular acidity degrades PEG-b-PLLDA, reversing nanosystem's surface charges to be positive, which drastically improves RCMSNs' tumor accumulation, penetration, and cellular internalization. Within cancer cells, CD-PEI gatekeepers detach to allow DOX unloading in response to intracellular acidity and glutathione and functionally act as a P-gp inhibitor, dampening P-gp's efflux activity by impairing ATP production. Thus, the resultant high-efficacy drug delivery along with reduced P-gp function cooperatively reverses MDR in vitro. Importantly, in preclinical tumor models, DOX@RCMSNs potently suppress MDR tumor growth without eliciting systemic toxicity, demonstrating their potential of clinical translation.
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Affiliation(s)
- Jia Liu
- Research Center for Tissue Engineering and Regenerative Medicine, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - Lei Zhao
- Research Center for Tissue Engineering and Regenerative Medicine, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
- Department of Clinical Laboratory, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - Lin Shi
- Research Center for Tissue Engineering and Regenerative Medicine, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - Ye Yuan
- Research Center for Tissue Engineering and Regenerative Medicine, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - Daan Fu
- Research Center for Tissue Engineering and Regenerative Medicine, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - Zhilan Ye
- Research Center for Tissue Engineering and Regenerative Medicine, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - Qilin Li
- Research Center for Tissue Engineering and Regenerative Medicine, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
- Department of Clinical Laboratory, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - Yan Deng
- Research Center for Tissue Engineering and Regenerative Medicine, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - Xingxin Liu
- Department of Laboratory Medicine, West China Second University Hospital, Sichuan University, Chengdu 610041, China
| | - Qiying Lv
- Research Center for Tissue Engineering and Regenerative Medicine, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - Yanni Cheng
- Research Center for Tissue Engineering and Regenerative Medicine, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - Yunruo Xu
- Research Center for Tissue Engineering and Regenerative Medicine, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - Xulin Jiang
- Key Laboratory of Biomedical Polymers of Ministry of Education and Department of Chemistry, Wuhan University, Wuhan 430072, China
| | - Guobin Wang
- Department of Gastrointestinal Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - Lin Wang
- Research Center for Tissue Engineering and Regenerative Medicine, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
- Department of Clinical Laboratory, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - Zheng Wang
- Research Center for Tissue Engineering and Regenerative Medicine, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
- Department of Gastrointestinal Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
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14
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Jarak I, Varela CL, Tavares da Silva E, Roleira FFM, Veiga F, Figueiras A. Pluronic-based nanovehicles: Recent advances in anticancer therapeutic applications. Eur J Med Chem 2020; 206:112526. [PMID: 32971442 DOI: 10.1016/j.ejmech.2020.112526] [Citation(s) in RCA: 33] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2019] [Revised: 05/27/2020] [Accepted: 06/01/2020] [Indexed: 02/06/2023]
Abstract
Pluronics are a class of amphiphilic tri-block copolymers with wide pharmaceutical applicability. In the past decades, the ability to form biocompatible nanosized micelles was exploited to formulate stable drug nanovehicles with potential use in antitumor therapy. Due to the great potential for tuning physical and structural properties of Pluronic unimers, a panoply of drug or polynucleotide-loaded micelles was prepared and tested for their antitumoral activity. The attractive inherent antitumor properties of Pluronic polymers in combination with cell targeting and stimuli-responsive ligands greatly improved antitumoral therapeutic effects of tested drugs. In spite of that, the extraordinary complexity of biological challenges in the delivery of micellar drug payload makes their therapeutic potential still not exploited to the fullest. In this review paper we attempt to present the latest developments in the field of Pluronic based nanovehicles and their application in anticancer therapy with an overview of the chemistry involved in the preparation of these nanovehicles.
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Affiliation(s)
- Ivana Jarak
- Univ. Coimbra, Department of Pharmaceutical Technology, Faculty of Pharmacy, Azinhaga de Santa Comba, Pólo III - Pólo das Ciências da Saúde, 3000-548, Coimbra, Portugal
| | - Carla L Varela
- Univ. Coimbra, CIEPQPF, FFUC, Laboratory of Pharmaceutical Chemistry, Azinhaga de Santa Comba, Pólo III - Pólo das Ciências da Saúde, 3000-548, Coimbra, Portugal
| | - Elisiário Tavares da Silva
- Univ. Coimbra, CIEPQPF, FFUC, Laboratory of Pharmaceutical Chemistry, Azinhaga de Santa Comba, Pólo III - Pólo das Ciências da Saúde, 3000-548, Coimbra, Portugal
| | - Fernanda F M Roleira
- Univ. Coimbra, CIEPQPF, FFUC, Laboratory of Pharmaceutical Chemistry, Azinhaga de Santa Comba, Pólo III - Pólo das Ciências da Saúde, 3000-548, Coimbra, Portugal
| | - Francisco Veiga
- Univ. Coimbra, Department of Pharmaceutical Technology, Faculty of Pharmacy, Azinhaga de Santa Comba, Pólo III - Pólo das Ciências da Saúde, 3000-548, Coimbra, Portugal; Univ. Coimbra, REQUIMTE/LAQV, Group of Pharmaceutical Technology, Faculty of Pharmacy, Azinhaga de Santa Comba, Pólo III - Pólo das Ciências da Saúde, 3000-548, Coimbra, Portugal
| | - Ana Figueiras
- Univ. Coimbra, Department of Pharmaceutical Technology, Faculty of Pharmacy, Azinhaga de Santa Comba, Pólo III - Pólo das Ciências da Saúde, 3000-548, Coimbra, Portugal; Univ. Coimbra, REQUIMTE/LAQV, Group of Pharmaceutical Technology, Faculty of Pharmacy, Azinhaga de Santa Comba, Pólo III - Pólo das Ciências da Saúde, 3000-548, Coimbra, Portugal.
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15
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Cyclopropenium Nanoparticles and Gene Transfection in Cells. Pharmaceutics 2020; 12:pharmaceutics12080768. [PMID: 32823739 PMCID: PMC7465078 DOI: 10.3390/pharmaceutics12080768] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2020] [Revised: 08/10/2020] [Accepted: 08/11/2020] [Indexed: 12/04/2022] Open
Abstract
Non-viral vectors for the transfection of genetic material are at the frontier of medical science. In this article, we introduce for the first time, cyclopropenium-containing nanoparticles as a cationic carrier for gene transfection, as an alternative to the common quaternary ammonium transfection agents. Cyclopropenium-based cationic nanoparticles were prepared by crosslinking poly(ethylene imine) (PEI) with tetrachlorocyclopropene. These nanoparticles were electrostatically complexed with plasmid DNA into nanoparticles (~50 nm). Their cellular uptake into F929 mouse fibroblast cells, and their eventual expression in vitro have been described. Transfection is enhanced relative to PEI with minimal toxicity. These cyclopropenium nanoparticles possess efficient gene transfection capabilities with minimal cytotoxicity, which makes them novel and promising candidates for gene therapy.
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16
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Piotrowski-Daspit AS, Kauffman AC, Bracaglia LG, Saltzman WM. Polymeric vehicles for nucleic acid delivery. Adv Drug Deliv Rev 2020; 156:119-132. [PMID: 32585159 PMCID: PMC7736472 DOI: 10.1016/j.addr.2020.06.014] [Citation(s) in RCA: 89] [Impact Index Per Article: 22.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2020] [Revised: 06/09/2020] [Accepted: 06/13/2020] [Indexed: 12/20/2022]
Abstract
Polymeric vehicles are versatile tools for therapeutic gene delivery. Many polymers-when assembled with nucleic acids into vehicles-can protect the cargo from degradation and clearance in vivo, and facilitate its transport into intracellular compartments. Design options in polymer synthesis yield a comprehensive range of molecules and resulting vehicle formulations. These properties can be manipulated to achieve stronger association with nucleic acid cargo and cells, improved endosomal escape, or sustained delivery depending on the application. Here, we describe current approaches for polymer use and related strategies for gene delivery in preclinical and clinical applications. Polymer vehicles delivering genetic material have already achieved significant therapeutic endpoints in vitro and in animal models. From our perspective, with preclincal assays that better mimic the in vivo environment, improved strategies for target specificity, and scalable techniques for polymer synthesis, the impact of this therapeutic approach will continue to expand.
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Affiliation(s)
| | - Amy C Kauffman
- Department of Biomedical Engineering, Yale University, New Haven, CT 06511, United States of America; Corning Life Sciences, Kennebunk, ME 04043, United States of America
| | - Laura G Bracaglia
- Department of Biomedical Engineering, Yale University, New Haven, CT 06511, United States of America
| | - W Mark Saltzman
- Department of Biomedical Engineering, Yale University, New Haven, CT 06511, United States of America; Department of Chemical & Environmental Engineering, Yale University, New Haven, CT 06511, United States of America; Department of Cellular & Molecular Physiology, Yale School of Medicine, New Haven, CT 06510, United States of America; Department of Dermatology, Yale School of Medicine, New Haven, CT 06510, United States of America.
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17
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Nanoparticle delivery of a pH-sensitive prodrug of doxorubicin and a mitochondrial targeting VES-H 8R 8 synergistically kill multi-drug resistant breast cancer cells. Sci Rep 2020; 10:8726. [PMID: 32457422 PMCID: PMC7251113 DOI: 10.1038/s41598-020-65450-x] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2019] [Accepted: 05/04/2020] [Indexed: 12/14/2022] Open
Abstract
Multi-drug resistance (MDR) remains a major obstacle in cancer treatment while being heavily dependent on mitochondrial activity and drug efflux. We previously demonstrated that cationic lipids, such as the vitamin E succinate modified octahistidine-octaarginine (VES-H8R8) conjugate, target mitochondria, resulting in depolarized mitochondria and inhibited drug efflux in MDR breast cancer cells. We hypothesized that the effective cell uptake, efflux inhibition, and mitochondrial depolarization properties of VES-H8R8 would synergistically enhance the toxicity of a pH-sensitive prodrug of doxorubicin (pDox) when co-encapsulated in nanoparticles (NPs). pDox was successfully synthesized and validated for pH-sensitive release from NPs under lysosome-mimicking, acidic conditions. The synergistic effect of VES-H8R8 and pDox was confirmed against MDR breast cancer cells in vitro. Importantly, synergism was only observed when VES-H8R8 and pDox were co-encapsulated in a single nanoparticulate system. The synergistic mechanism was investigated, confirming superior pDox uptake and retention, Pgp efflux inhibition, mitochondrial depolarization, and enhanced induction of ROS, and apoptosis. This work demonstrates the translational potential of doubly-loaded NPs co-encapsulating pDox with VES-H8R8 to synergistically kill MDR breast cancer cells.
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18
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Salameh JW, Zhou L, Ward SM, Santa Chalarca CF, Emrick T, Figueiredo ML. Polymer-mediated gene therapy: Recent advances and merging of delivery techniques. WILEY INTERDISCIPLINARY REVIEWS. NANOMEDICINE AND NANOBIOTECHNOLOGY 2020; 12:e1598. [PMID: 31793237 PMCID: PMC7676468 DOI: 10.1002/wnan.1598] [Citation(s) in RCA: 32] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/17/2019] [Revised: 09/02/2019] [Accepted: 09/19/2019] [Indexed: 01/01/2023]
Abstract
The ability to safely and precisely deliver genetic materials to target sites in complex biological environments is vital to the success of gene therapy. Numerous viral and nonviral vectors have been developed and evaluated for their safety and efficacy. This study will feature progress in synthetic polymers as nonviral vectors, which benefit from their chemical versatility, biocompatibility, and ability to carry both therapeutic cargo and targeting moieties. The combination of synthetic gene carrying constructs with advanced delivery techniques promises new therapeutic options for treating and curing genetic disorders. This article is characterized under: Therapeutic Approaches and Drug Discovery > Nanomedicine for Oncologic Disease Therapeutic Approaches and Drug Discovery > Emerging Technologies.
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Affiliation(s)
- Janelle W. Salameh
- The Weldon School of Biomedical Engineering and the
Interdisciplinary Biomedical Sciences Program, Purdue University, West Lafayette,
Indiana
| | - Le Zhou
- Polymer Science and Engineering Department, University of
Massachusetts, Amherst, Massachusetts
| | - Sarah M. Ward
- Polymer Science and Engineering Department, University of
Massachusetts, Amherst, Massachusetts
| | | | - Todd Emrick
- Polymer Science and Engineering Department, University of
Massachusetts, Amherst, Massachusetts
| | - Marxa L. Figueiredo
- Department of Basic Medical Sciences and the
Interdisciplinary Biomedical Sciences Program, Purdue University, West Lafayette,
Indiana
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19
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Van Bruggen C, Hexum JK, Tan Z, Dalal RJ, Reineke TM. Nonviral Gene Delivery with Cationic Glycopolymers. Acc Chem Res 2019; 52:1347-1358. [PMID: 30993967 DOI: 10.1021/acs.accounts.8b00665] [Citation(s) in RCA: 86] [Impact Index Per Article: 17.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
The field of gene therapy, which aims to treat patients by modulating gene expression, has come to fruition and has landed several landmark FDA approvals. Most gene therapies currently rely on viral vectors to deliver nucleic acid cargo into cells, but there is significant interest in moving toward chemical-based methods, such as polymer-based vectors, due to their low cost, immunocompatibility, and tunability. The full potential of polymer-based delivery systems has yet to be realized, however, because most polymeric transfection reagents are either too inefficient or too toxic for use in the clinic. In this Account, we describe developments in carbohydrate-based cationic polymers, termed glycopolymers, for enhanced nonviral gene delivery. As ubiquitous components of biological systems, carbohydrates are a rich class of compounds that can be harnessed to improve the biocompatibility of non-native polymers, such as linear polyamines used for promoting transfection. Reineke et al. developed a new class of carbohydrate-based polymers called poly(glycoamidoamine)s (PGAAs) by step-growth polymerization of linear monosaccharides with linear ethyleneamines. These glycopolymers were shown to be both efficient and biocompatible transfection reagents. Systematic modifications of the structural components of the PGAA system revealed structure-activity relationships important to its function, including its ability to degrade in situ. Expanding upon the development of step-growth glycopolymers, monosaccharides, such as glucose, were functionalized as vinyl-based monomers for the formation of diblock copolymers via radical addition-fragmentation chain-transfer (RAFT) polymerization. Upon complexation with plasmid DNA, the glucose-containing block creates a hydrophilic shell that promotes colloidal stability as effectively as PEG functionalization. An N-acetyl-d-galactosamine variant of this diblock polymer yields colloidally stable particles that show increased receptor-mediated uptake by liver hepatocytes in vitro and promotes liver targeting in mice. Finally, the disaccharide trehalose was incorporated into polycationic structures using both step-growth and RAFT techniques. It was shown that these trehalose-based copolymers imparted increased colloidal stability and yielded plasmid and siRNA polyplexes that resist aggregation upon lyophilization and reconstitution in water. The aforementioned series of glycopolymers use carbohydrates to promote effective and safe delivery of nucleic acid cargo into a variety of human cells types by promoting vehicle degradation, tissue-targeting, colloidal stabilization, and stability toward lyophilization to extend shelf life. Work is currently underway to translate the use of glycopolymers for safe and efficient delivery of nucleic acid cargo for gene therapy and gene editing applications.
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Affiliation(s)
- Craig Van Bruggen
- Department of Chemistry, University of Minnesota, 207 Pleasant Street SE, Minneapolis, Minnesota 55455, United States
| | - Joseph K. Hexum
- Department of Chemistry, University of Minnesota, 207 Pleasant Street SE, Minneapolis, Minnesota 55455, United States
| | - Zhe Tan
- Department of Chemistry, University of Minnesota, 207 Pleasant Street SE, Minneapolis, Minnesota 55455, United States
| | - Rishad J. Dalal
- Department of Chemistry, University of Minnesota, 207 Pleasant Street SE, Minneapolis, Minnesota 55455, United States
| | - Theresa M. Reineke
- Department of Chemistry, University of Minnesota, 207 Pleasant Street SE, Minneapolis, Minnesota 55455, United States
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20
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Czupiel PP, Delplace V, Shoichet MS. Cationic block amphiphiles show anti-mitochondrial activity in multi-drug resistant breast cancer cells. J Control Release 2019; 305:210-219. [PMID: 31071370 DOI: 10.1016/j.jconrel.2019.04.045] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2018] [Revised: 04/17/2019] [Accepted: 04/29/2019] [Indexed: 12/21/2022]
Abstract
Currently, there are limited treatment options for multi-drug resistant breast cancer. Lipid-modified cationic peptides have the potential to reach the mitochondria, which are attractive targets for the treatment of multi-drug resistant (MDR) breast cancer; yet, little is known about their mitochondrial targeting and anti-cancer activity. Interestingly, lipid-modified cationic peptides, typically used as gene transfection agents, exhibit similar structural features to mitochondrial targeted peptides. Using octahistidine-octaarginine (H8R8) as a model cationic peptide for cell penetration and endosomal escape, we explored the anti-cancer potential of lipid-modified cationic peptides as a function of amphiphilicity, biodegradability and lipid structure. We found that cationic peptides modified with a lipid that is at least 12 carbons in length exhibit potent anti-cancer activity in the low micromolar range in both EMT6/P and EMT6/AR-1 breast cancer cells. Comparing degradable and non-degradable linkers, as well as L- and D-amino acid sequences, we found that the anti-cancer activity is mostly independent of the biodegradation of the lipid-modified cationic peptides. Two candidates, stearyl-H8R8 (Str-H8R8) and vitamin E succinate-H8R8 (VES-H8R8) were cytotoxic to cancer cells by mitochondria depolarization. We observed increased reactive oxygen species (ROS) production, reduced cell bioenergetics and drug efflux, triggering apoptosis and G1 cell cycle arrest. Compared to Str-H8R8, VES-H8R8 showed enhanced cancer cell selectivity and drug efflux inhibition, thereby serving as a potential novel therapeutic agent. This study deepens our understanding of lipid-modified cationic peptides and uncovers their potential in multi-drug resistant breast cancer.
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Affiliation(s)
- Petro P Czupiel
- Department of Chemical Engineering and Applied Chemistry, University of Toronto, 200 College Street, Toronto, ON M5S 3E5, Canada; Institute of Biomaterials and Biomedical Engineering, University of Toronto, 164 College Street, Toronto, ON M5S 3G9, Canada; Donnelly Centre, University of Toronto, 160 College Street, Toronto, ON M5S 3E1, Canada
| | - Vianney Delplace
- Department of Chemical Engineering and Applied Chemistry, University of Toronto, 200 College Street, Toronto, ON M5S 3E5, Canada; Donnelly Centre, University of Toronto, 160 College Street, Toronto, ON M5S 3E1, Canada
| | - Molly S Shoichet
- Department of Chemical Engineering and Applied Chemistry, University of Toronto, 200 College Street, Toronto, ON M5S 3E5, Canada; Institute of Biomaterials and Biomedical Engineering, University of Toronto, 164 College Street, Toronto, ON M5S 3G9, Canada; Donnelly Centre, University of Toronto, 160 College Street, Toronto, ON M5S 3E1, Canada.
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21
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Phillips HR, Tolstyka ZP, Hall BC, Hexum JK, Hackett PB, Reineke TM. Glycopolycation–DNA Polyplex Formulation N/P Ratio Affects Stability, Hemocompatibility, and in Vivo Biodistribution. Biomacromolecules 2019; 20:1530-1544. [DOI: 10.1021/acs.biomac.8b01704] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Affiliation(s)
- Haley R. Phillips
- Center for Genome Engineering and Department of Chemistry, University of Minnesota, 207 Pleasant Street SE, Minneapolis, Minnesota 55455, United States
| | - Zachary P. Tolstyka
- Center for Genome Engineering and Department of Chemistry, University of Minnesota, 207 Pleasant Street SE, Minneapolis, Minnesota 55455, United States
| | - Bryan C. Hall
- Center for Genome Engineering and Department of Genetics, Cell Biology, and Development, University of Minnesota, Minneapolis, Minnesota 55455, United States
| | - Joseph K. Hexum
- Center for Genome Engineering and Department of Chemistry, University of Minnesota, 207 Pleasant Street SE, Minneapolis, Minnesota 55455, United States
| | - Perry B. Hackett
- Center for Genome Engineering and Department of Genetics, Cell Biology, and Development, University of Minnesota, Minneapolis, Minnesota 55455, United States
| | - Theresa M. Reineke
- Center for Genome Engineering and Department of Chemistry, University of Minnesota, 207 Pleasant Street SE, Minneapolis, Minnesota 55455, United States
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22
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Zilkowski I, Ziouti F, Schulze A, Hauck S, Schmidt S, Mainz L, Sauer M, Albrecht K, Jundt F, Groll J. Nanogels Enable Efficient miRNA Delivery and Target Gene Downregulation in Transfection-Resistant Multiple Myeloma Cells. Biomacromolecules 2018; 20:916-926. [DOI: 10.1021/acs.biomac.8b01553] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Affiliation(s)
- Ilona Zilkowski
- Department for Functional Materials in Medicine and Dentistry and Bavarian Polymer Institute, University of Würzburg, Pleicherwall 2, 97070 Würzburg, Germany
| | - Fani Ziouti
- Department of Internal Medicine II, University Hospital Würzburg, Oberdürrbacher Straße 6, 97080 Würzburg, Germany
| | - Andres Schulze
- Department of Internal Medicine II, University Hospital Würzburg, Oberdürrbacher Straße 6, 97080 Würzburg, Germany
| | - Stefanie Hauck
- Department for Functional Materials in Medicine and Dentistry and Bavarian Polymer Institute, University of Würzburg, Pleicherwall 2, 97070 Würzburg, Germany
| | - Stefanie Schmidt
- Department of Internal Medicine II, University Hospital Würzburg, Oberdürrbacher Straße 6, 97080 Würzburg, Germany
| | - Laura Mainz
- Department of Internal Medicine II, University Hospital Würzburg, Oberdürrbacher Straße 6, 97080 Würzburg, Germany
| | - Markus Sauer
- Chair for Biotechnology and Biophysics, University of Würzburg, Am Hubland, 97074 Würzburg, Germany
| | - Krystyna Albrecht
- Department for Functional Materials in Medicine and Dentistry and Bavarian Polymer Institute, University of Würzburg, Pleicherwall 2, 97070 Würzburg, Germany
| | - Franziska Jundt
- Department of Internal Medicine II, University Hospital Würzburg, Oberdürrbacher Straße 6, 97080 Würzburg, Germany
| | - Jürgen Groll
- Department for Functional Materials in Medicine and Dentistry and Bavarian Polymer Institute, University of Würzburg, Pleicherwall 2, 97070 Würzburg, Germany
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23
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Hobernik D, Bros M. DNA Vaccines-How Far From Clinical Use? Int J Mol Sci 2018; 19:ijms19113605. [PMID: 30445702 PMCID: PMC6274812 DOI: 10.3390/ijms19113605] [Citation(s) in RCA: 290] [Impact Index Per Article: 48.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2018] [Revised: 11/07/2018] [Accepted: 11/09/2018] [Indexed: 12/12/2022] Open
Abstract
Two decades ago successful transfection of antigen presenting cells (APC) in vivo was demonstrated which resulted in the induction of primary adaptive immune responses. Due to the good biocompatibility of plasmid DNA, their cost-efficient production and long shelf life, many researchers aimed to develop DNA vaccine-based immunotherapeutic strategies for treatment of infections and cancer, but also autoimmune diseases and allergies. This review aims to summarize our current knowledge on the course of action of DNA vaccines, and which factors are responsible for the poor immunogenicity in human so far. Important optimization steps that improve DNA transfection efficiency comprise the introduction of DNA-complexing nano-carriers aimed to prevent extracellular DNA degradation, enabling APC targeting, and enhanced endo/lysosomal escape of DNA. Attachment of virus-derived nuclear localization sequences facilitates nuclear entry of DNA. Improvements in DNA vaccine design include the use of APC-specific promotors for transcriptional targeting, the arrangement of multiple antigen sequences, the co-delivery of molecular adjuvants to prevent tolerance induction, and strategies to circumvent potential inhibitory effects of the vector backbone. Successful clinical use of DNA vaccines may require combined employment of all of these parameters, and combination treatment with additional drugs.
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Affiliation(s)
- Dominika Hobernik
- Department of Dermatology, University Medical Center, 55131 Mainz, Germany.
| | - Matthias Bros
- Department of Dermatology, University Medical Center, 55131 Mainz, Germany.
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24
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Reinhard S, Wang Y, Dengler S, Wagner E. Precise Enzymatic Cleavage Sites for Improved Bioactivity of siRNA Lipo-Polyplexes. Bioconjug Chem 2018; 29:3649-3657. [DOI: 10.1021/acs.bioconjchem.8b00585] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Affiliation(s)
- Sören Reinhard
- Department of Pharmacy, Pharmaceutical Biotechnology, Center of Nanoscience (CeNS), Ludwig-Maximilians-Universität, Butenandtstrasse 5-13, 81377 München, Germany
| | - Yanfang Wang
- Department of Pharmacy, Pharmaceutical Biotechnology, Center of Nanoscience (CeNS), Ludwig-Maximilians-Universität, Butenandtstrasse 5-13, 81377 München, Germany
| | - Sebastian Dengler
- Department of Pharmacy, Pharmaceutical Biotechnology, Center of Nanoscience (CeNS), Ludwig-Maximilians-Universität, Butenandtstrasse 5-13, 81377 München, Germany
| | - Ernst Wagner
- Department of Pharmacy, Pharmaceutical Biotechnology, Center of Nanoscience (CeNS), Ludwig-Maximilians-Universität, Butenandtstrasse 5-13, 81377 München, Germany
- Nanosystems Initiative
Munich (NIM), Schellingstrasse 4, 80799 München, Germany
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25
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Design and development of a robust photo-responsive block copolymer framework for tunable nucleic acid delivery and efficient gene silencing. Polym J 2018. [DOI: 10.1038/s41428-018-0077-z] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
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26
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Yamamoto T, Tsunoda M, Ozono M, Watanabe A, Kotake K, Hiroshima Y, Yamada A, Terada H, Shinohara Y. Polyethyleneimine renders mitochondrial membranes permeable by interacting with negatively charged phospholipids in them. Arch Biochem Biophys 2018; 652:9-17. [PMID: 29886045 DOI: 10.1016/j.abb.2018.06.003] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2018] [Revised: 06/05/2018] [Accepted: 06/06/2018] [Indexed: 01/21/2023]
Abstract
Polyethyleneimines (PEIs) are used for transfection of cells with nucleic acids. Meanwhile, the interaction of PEI with mitochondria causes cytochrome c release prior to apoptosis; the mechanisms how PEI causes this permeabilization of mitochondrial membranes and the release of cytochrome c remain unclear. To clarify these mechanisms, we examined the effects of branched-type PEI and linear-type PEI, each of which was 25 kDa in size, on mitochondria. The permeabilization potency of mitochondrial membranes by branched PEI was stronger than that by linear PEI. The permeabilization by PEIs were insensitive to permeability-transition inhibitors, indicating that PEI-induced permeabilization was not attributed to permeability transition. Meanwhile, PEIs caused permeabilization of artificial lipid vesicles; again, the permeabilization potency of branched PEI was stronger than that of linear PEI. Such a difference in this potency was close to that in the case of isolated mitochondria, signifying that the PEI-induced permeabilization of mitochondrial membranes could be attributed to PEI's interaction with the phospholipid phase. Furthermore, this PEI-induced permeabilization of the lipid vesicles was observed only in the case of lipid vesicles including negatively charged phospholipids. These results indicate that PEIs interacted with negatively charged phospholipids in the mitochondrial membranes to directly lead to their permeabilization.
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Affiliation(s)
- Takenori Yamamoto
- Institute for Genome Research, Tokushima University, Kuramotocho-3, Tokushima 770-8503, Japan; Faculty of Pharmaceutical Sciences, Tokushima University, Shomachi-1, Tokushima 770-8505, Japan.
| | - Moe Tsunoda
- Institute for Genome Research, Tokushima University, Kuramotocho-3, Tokushima 770-8503, Japan; Faculty of Pharmaceutical Sciences, Tokushima University, Shomachi-1, Tokushima 770-8505, Japan
| | - Mizune Ozono
- Institute for Genome Research, Tokushima University, Kuramotocho-3, Tokushima 770-8503, Japan; Faculty of Pharmaceutical Sciences, Tokushima University, Shomachi-1, Tokushima 770-8505, Japan
| | - Akira Watanabe
- Institute for Genome Research, Tokushima University, Kuramotocho-3, Tokushima 770-8503, Japan; Faculty of Pharmaceutical Sciences, Tokushima University, Shomachi-1, Tokushima 770-8505, Japan
| | - Kazumasa Kotake
- Institute for Genome Research, Tokushima University, Kuramotocho-3, Tokushima 770-8503, Japan; Faculty of Pharmaceutical Sciences, Tokushima University, Shomachi-1, Tokushima 770-8505, Japan
| | - Yuka Hiroshima
- Institute for Genome Research, Tokushima University, Kuramotocho-3, Tokushima 770-8503, Japan
| | - Akiko Yamada
- School of Dentistry, Tokushima University, Kuramotocho-3, Tokushima 770-8504, Japan
| | - Hiroshi Terada
- Niigata University of Pharmacy and Applied Life Sciences, Niigata City 956-8603, Japan
| | - Yasuo Shinohara
- Institute for Genome Research, Tokushima University, Kuramotocho-3, Tokushima 770-8503, Japan; Faculty of Pharmaceutical Sciences, Tokushima University, Shomachi-1, Tokushima 770-8505, Japan
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27
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Almulathanon AAY, Ranucci E, Ferruti P, Garnett MC, Bosquillon C. Comparison of Gene Transfection and Cytotoxicity Mechanisms of Linear Poly(amidoamine) and Branched Poly(ethyleneimine) Polyplexes. Pharm Res 2018. [PMID: 29516282 DOI: 10.1007/s11095-017-2328-7] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Abstract
PURPOSE This study aimed to further explore the mechanisms behind the ability of certain linear polyamidoamines (PAAs) to transfect cells with minimal cytotoxicity. METHODS The transfection efficiency of DNA complexed with a PAA of a molecular weight over 10 kDa or 25 kDa branched polyethyleneimine (BPEI) was compared in A549 cells using a luciferase reporter gene assay. The impact of endo/lysosomal escape on transgene expression was investigated by transfecting cells in presence of bafilomycin A1 or chloroquine. Cytotoxicity caused by the vectors was evaluated by measuring cell metabolic activity, lactate dehydrogenase release, formation of reactive oxygen species and changes in mitochondrial membrane potential. RESULTS The luciferase activity was ~3-fold lower after transfection with PAA polyplexes than with BPEI complexes at the optimal polymer to nucleotide ratio (RU:Nt). However, in contrast to BPEI vectors, PAA polyplexes caused negligible cytotoxic effects. The transfection efficiency of PAA polyplexes was significantly reduced in presence of bafilomycin A1 while chloroquine enhanced or decreased transgene expression depending on the RU:Nt. CONCLUSIONS PAA polyplexes displayed a pH-dependent endo/lysosomal escape which was not associated with cytotoxic events, unlike observed with BPEI polyplexes. This is likely due to their greater interactions with biological membranes at acidic than neutral pH.
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Affiliation(s)
- Ammar A Y Almulathanon
- Division of Molecular Therapeutics and Formulation, School of Pharmacy, University of Nottingham, University Park, Nottingham, NG7 2RD, UK.,Pharmacy College,, University of Mosul,, Mosul, Iraq
| | - Elisabetta Ranucci
- Dipartimento di Chimica,, Università degli Studi di Milano, via C. Golgi 19, 20133, Milan, Italy
| | - Paolo Ferruti
- Dipartimento di Chimica,, Università degli Studi di Milano, via C. Golgi 19, 20133, Milan, Italy
| | - Martin C Garnett
- Division of Molecular Therapeutics and Formulation, School of Pharmacy, University of Nottingham, University Park, Nottingham, NG7 2RD, UK
| | - Cynthia Bosquillon
- Division of Molecular Therapeutics and Formulation, School of Pharmacy, University of Nottingham, University Park, Nottingham, NG7 2RD, UK.
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28
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Bus T, Traeger A, Schubert US. The great escape: how cationic polyplexes overcome the endosomal barrier. J Mater Chem B 2018; 6:6904-6918. [DOI: 10.1039/c8tb00967h] [Citation(s) in RCA: 182] [Impact Index Per Article: 30.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Endo-lysosomal escape strategies of cationic polymer-mediated gene delivery at a glance.
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Affiliation(s)
- Tanja Bus
- Laboratory of Organic Chemistry and Macromolecular Chemistry (IOMC)
- Friedrich Schiller University Jena
- 07743 Jena
- Germany
- Jena Center for Soft Matter (JCSM)
| | - Anja Traeger
- Laboratory of Organic Chemistry and Macromolecular Chemistry (IOMC)
- Friedrich Schiller University Jena
- 07743 Jena
- Germany
- Jena Center for Soft Matter (JCSM)
| | - Ulrich S. Schubert
- Laboratory of Organic Chemistry and Macromolecular Chemistry (IOMC)
- Friedrich Schiller University Jena
- 07743 Jena
- Germany
- Jena Center for Soft Matter (JCSM)
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29
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Determining the effects of PEI adsorption on the permeability of 1,2-dipalmitoylphosphatidylcholine/bis(monoacylglycero)phosphate membranes under osmotic stress. Acta Biomater 2018; 65:317-326. [PMID: 29054822 DOI: 10.1016/j.actbio.2017.10.027] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2017] [Revised: 10/12/2017] [Accepted: 10/16/2017] [Indexed: 12/26/2022]
Abstract
Polycations are used for a number of biological applications, including antibiotics and gene therapy. One aspect of the use of polycation gene carriers such as polyethylenemine (PEI) in gene therapy that is not well understood is their ability to escape from the vesicles they are internalized in. Here, in an attempt to gain a better understanding of PEI interaction with endosomal lipids under osmotic stress, we performed investigations using monolayers and vesicles derived from a mixture of neutral and negative lipids (1,2-dipalmitoylphosphatidylcholine (DPPC) and bis(monoacylglycero)phosphate (BMP), respectively). X-ray reflectivity (XR) and Langmuir trough measurements confirmed PEI adsorption to the negatively charged membrane. Confocal microscopy imaging indicated that PEI adsorption actually increases the overall integrity of the DPPC/BMP vesicle against osmotic stresses while also causing overall deformation and permeabilization of the lipid membrane, thus leading to leakage of contents from the interior of the vesicle. These confocal microscopy observations were also supported by data gathered by dynamic light scattering (DLS). STATEMENT OF SIGNIFICANCE In recent decades, researchers have investigated polyamine-based gene delivery systems as useful alternatives to viral gene carriers. One step that is crucial to the performance of polyamine gene carriers such as polyethylenemine (PEI) is escape from late endosomal vesicles during intracellular delivery. However, the ability of polyamine/DNA polyplexes to effectively escape from endosomes is a little-understood part of the gene therapy techniques that use these polyplexes. Here, we performed investigations using monolayers and vesicles derived from a mixture of neutral and negative lipids (1,2-dipalmitoylphosphatidylcholine (DPPC) and bis(monoacylglycero)phosphate (BMP), respectively) as model systems for late endosomes in order to examine the interactions of PEI with the DPPC/BMP membranes and study the subsequent effects on the stability and permeability of these membranes.
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30
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Hall A, Lächelt U, Bartek J, Wagner E, Moghimi SM. Polyplex Evolution: Understanding Biology, Optimizing Performance. Mol Ther 2017; 25:1476-1490. [PMID: 28274797 DOI: 10.1016/j.ymthe.2017.01.024] [Citation(s) in RCA: 116] [Impact Index Per Article: 16.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2016] [Revised: 01/25/2017] [Accepted: 01/25/2017] [Indexed: 02/06/2023] Open
Abstract
Polyethylenimine (PEI) is a gold standard polycationic transfectant. However, the highly efficient transfecting activity of PEI and many of its derivatives is accompanied by serious cytotoxic complications and safety concerns at innate immune levels, which impedes the development of therapeutic polycationic nucleic acid carriers in general and their clinical applications. In recent years, the dilemma between transfection efficacy and adverse PEI activities has been addressed from in-depth investigations of cellular processes during transfection and elucidation of molecular mechanisms of PEI-mediated toxicity and translation of these integrated events to chemical engineering of novel PEI derivatives with an improved benefit-to-risk ratio. This review addresses these perspectives and discusses molecular events pertaining to dynamic and multifaceted PEI-mediated cytotoxicity, including membrane destabilization, mitochondrial dysfunction, and perturbations of glycolytic flux and redox homeostasis as well as chemical strategies for the generation of better tolerated polycations. We further examine the effect of PEI and its derivatives on complement activation and interaction with Toll-like receptors. These perspectives are intended to lay the foundation for an improved understanding of interlinked mechanisms controlling transfection and toxicity and their translation for improved engineering of polycation-based transfectants.
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Affiliation(s)
- Arnaldur Hall
- Genome Integrity Unit, Danish Cancer Society Research Center, 2100 Copenhagen, Denmark
| | - Ulrich Lächelt
- Pharmaceutical Biotechnology, Department of Pharmacy, Ludwig-Maximilians-Universität, 81377 Munich, Germany; Nanosystems Initiative Munich, 80799 Munich, Germany
| | - Jiri Bartek
- Genome Integrity Unit, Danish Cancer Society Research Center, 2100 Copenhagen, Denmark; Department of Medical Biochemistry and Biophysics, Science for Life Laboratory, Karolinska Institute, 171 65 Solna, Sweden
| | - Ernst Wagner
- Pharmaceutical Biotechnology, Department of Pharmacy, Ludwig-Maximilians-Universität, 81377 Munich, Germany; Nanosystems Initiative Munich, 80799 Munich, Germany.
| | - Seyed Moein Moghimi
- School of Medicine, Pharmacy and Health, Durham University, Queen's Campus, Stockton-on-Tees TS17 6BH, UK.
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31
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Monnery BD, Wright M, Cavill R, Hoogenboom R, Shaunak S, Steinke JHG, Thanou M. Cytotoxicity of polycations: Relationship of molecular weight and the hydrolytic theory of the mechanism of toxicity. Int J Pharm 2017; 521:249-258. [PMID: 28232268 DOI: 10.1016/j.ijpharm.2017.02.048] [Citation(s) in RCA: 146] [Impact Index Per Article: 20.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2016] [Revised: 02/13/2017] [Accepted: 02/18/2017] [Indexed: 12/17/2022]
Abstract
The mechanism of polycation cytotoxicity and the relationship to polymer molecular weight is poorly understood. To gain an insight into this important phenomenon a range of newly synthesised uniform (near monodisperse) linear polyethylenimines, commercially available poly(l-lysine)s and two commonly used PEI-based transfectants (broad 22kDa linear and 25kDa branched) were tested for their cytotoxicity against the A549 human lung carcinoma cell line. Cell membrane damage assays (LDH release) and cell viability assays (MTT) showed a strong relationship to dose and polymer molecular weight, and increasing incubation times revealed that even supposedly "non-toxic" low molecular weight polymers still damage cell membranes. The newly proposed mechanism of cell membrane damage is acid catalysed hydrolysis of lipidic phosphoester bonds, which was supported by observations of the hydrolysis of DOPC liposomes.
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Affiliation(s)
- Bryn D Monnery
- Chemical Biology Section, Department of Chemistry, Imperial College London, London SW7 2AZ, UK
| | - Michael Wright
- Institute of Pharmaceutical Science, King's College London,Franklin-Wilkins Building, London, SE1 9NH, UK
| | - Rachel Cavill
- Department of Data Science and Knowledge Engineering, Maastricht University, P.O. Box 616, 6200 MD, Maastricht, The Netherlands
| | - Richard Hoogenboom
- Department of Organic and Macromolecular Chemistry, Ghent University, Krijgslaan 281-S4, 9000 Gent, Belgium
| | - Sunil Shaunak
- Department of Infectious Diseases and Immunity, Faculty of Medicine, Imperial College London, Hammersmith Campus, London, W12 ONN, UK
| | - Joachim H G Steinke
- Chemical Biology Section, Department of Chemistry, Imperial College London, London SW7 2AZ, UK
| | - Maya Thanou
- Institute of Pharmaceutical Science, King's College London,Franklin-Wilkins Building, London, SE1 9NH, UK.
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32
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Zhang P, Wagner E. History of Polymeric Gene Delivery Systems. Top Curr Chem (Cham) 2017; 375:26. [PMID: 28181193 DOI: 10.1007/s41061-017-0112-0] [Citation(s) in RCA: 50] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2016] [Accepted: 01/24/2017] [Indexed: 12/16/2022]
Abstract
As an option for genetic disease treatment and an alternative for traditional cancer chemotherapy, gene therapy achieves significant attention. Nucleic acid delivery, however, remains a main challenge in human gene therapy. Polymer-based delivery systems offer a safer and promising route for therapeutic gene delivery. Over the past five decades, various cationic polymers have been optimized for increasingly effective nucleic acid transfer. This resulted in a chemical evolution of cationic polymers from the first-generation polycations towards bioinspired multifunctional sequence-defined polymers and nanocomposites. With the increasing of knowledge in molecular biological processes and rapid progress of macromolecular chemistry, further improvement of polymeric nucleic acid delivery systems will provide effective tool for gene-based therapy in the near future.
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Affiliation(s)
- Peng Zhang
- Pharmaceutical Biotechnology, Center for System-Based Drug Research Ludwig-Maximilians-Universität, 81377, Munich, Germany. .,Nanosystems Initiative Munich (NIM), 80799, Munich, Germany.
| | - Ernst Wagner
- Pharmaceutical Biotechnology, Center for System-Based Drug Research Ludwig-Maximilians-Universität, 81377, Munich, Germany.,Nanosystems Initiative Munich (NIM), 80799, Munich, Germany.,Center for NanoScience (CeNS), Ludwig-Maximilians-Universität, 80799, Munich, Germany
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Abstract
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An HPMA-based polymeric prodrug of
a CXCR4 antagonist, AMD3465
(P-SS-AMD), was developed as a dual-function carrier of therapeutic
miRNA. P-SS-AMD was synthesized by a copolymerization of HPMA with
a methacrylamide monomer in which the AMD3465 was attached via a self-immolative
disulfide linker. P-SS-AMD showed effective release of the parent
AMD3465 drug following treatment with intracellular levels of glutathione
(GSH). The AMD3465 was released in the cells and exhibited functional
CXCR4 antagonism, demonstrated by inhibition of the CXCR4-mediated
cancer cell invasion. Due to its cationic character, P-SS-AMD could
form polyplexes with miRNA and mediate efficient transfection of miR-200c
mimics to downregulate expression of a downstream target ZEB-1 in
cancer cells. The combined P-SS-AMD/miR-200c polyplexes showed improved
ability to inhibit cancer cell migration when compared with individual
treatments. The reported findings validate P-SS-AMD as a dual-function
delivery vector that can simultaneously deliver a therapeutic miRNA
and function as a polymeric prodrug of CXCR4 antagonist.
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Affiliation(s)
- Zheng-Hong Peng
- Center for Drug Delivery and Nanomedicine, Department of Pharmaceutical Sciences, University of Nebraska Medical Center , Omaha, Nebraska 68198, United States
| | - Ying Xie
- Center for Drug Delivery and Nanomedicine, Department of Pharmaceutical Sciences, University of Nebraska Medical Center , Omaha, Nebraska 68198, United States
| | - Yan Wang
- Center for Drug Delivery and Nanomedicine, Department of Pharmaceutical Sciences, University of Nebraska Medical Center , Omaha, Nebraska 68198, United States
| | - Jing Li
- Center for Drug Delivery and Nanomedicine, Department of Pharmaceutical Sciences, University of Nebraska Medical Center , Omaha, Nebraska 68198, United States
| | - David Oupický
- Center for Drug Delivery and Nanomedicine, Department of Pharmaceutical Sciences, University of Nebraska Medical Center , Omaha, Nebraska 68198, United States
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Andersen H, Parhamifar L, Hunter AC, Shahin V, Moghimi SM. AFM visualization of sub-50 nm polyplex disposition to the nuclear pore complex without compromising the integrity of the nuclear envelope. J Control Release 2016; 244:24-29. [DOI: 10.1016/j.jconrel.2016.11.008] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2016] [Revised: 10/18/2016] [Accepted: 11/10/2016] [Indexed: 02/07/2023]
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35
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Pandey AP, Sawant KK. Polyethylenimine: A versatile, multifunctional non-viral vector for nucleic acid delivery. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2016; 68:904-918. [DOI: 10.1016/j.msec.2016.07.066] [Citation(s) in RCA: 147] [Impact Index Per Article: 18.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/04/2016] [Revised: 07/16/2016] [Accepted: 07/24/2016] [Indexed: 12/21/2022]
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36
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Polyethylenimine-based polyplex nanoparticles and features of their behavior in cells and tissues. Russ Chem Bull 2016. [DOI: 10.1007/s11172-015-1220-z] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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37
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Vaidyanathan S, Orr BG, Banaszak Holl MM. Role of Cell Membrane-Vector Interactions in Successful Gene Delivery. Acc Chem Res 2016; 49:1486-93. [PMID: 27459207 DOI: 10.1021/acs.accounts.6b00200] [Citation(s) in RCA: 59] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
Cationic polymers have been investigated as nonviral vectors for gene delivery due to their favorable safety profile when compared to viral vectors. However, nonviral vectors are limited by poor efficacy in inducing gene expression. The physicochemical properties of cationic polymers enabling successful gene expression have been investigated in order to improve expression efficiency and safety. Studies over the past several years have focused on five possible rate-limiting processes to explain the differences in gene expression: (1) endosomal release, (2) transport within specific intracellular pathways, (3) protection of DNA from nucleases, (4) transport into the nucleus, and (5) DNA release from vectors. However, determining the relative importance of these processes and the vector properties necessary for optimization remain a challenge to the field. In this Account, we describe over a decade of studies focused on understanding the interaction of cationic polymer and cationic polymer/oligonucleotide (polyplex) interactions with model lipid membranes, cell membranes, and cells in culture. In particular, we have been interested in how the interaction between cationic polymers and the membrane influences the intracellular transport of intact DNA to the nucleus. Recent advances in microfluidic patch clamp techniques enabled us to quantify polyplex cell membrane interactions at the cellular level with precise control over material concentrations and exposure times. In attempting to relate these findings to subsequent intracellular transport of DNA and expression of protein, we needed to develop an approach that could distinguish DNA that was intact and potentially functional for gene expression from the much larger pool of degraded, nonfunctional DNA within the cell. We addressed this need by developing a FRET oligonucleotide molecular beacon (OMB) to monitor intact DNA transport. The research highlighted in this Account builds to the conclusion that polyplex transported DNA is released from endosomes by free cationic polymer intercalated into the endosomal membrane. This cationic polymer initially interacts with the cell plasma membrane and appears to reach the endosome by lipid cycling mechanisms. The fraction of cells displaying release of intact DNA from endosomes quantitatively predicts the fraction of cells displaying gene expression for both linear poly(ethylenimine) (L-PEI; an effective vector) and generation five poly(amidoamine) dendrimer (G5 PAMAM; an ineffective vector). Moreover, intact OMB delivered with G5 PAMAM, which normally is confined to endosomes, was released by the subsequent addition of L-PEI with a corresponding 10-fold increase in transgene expression. These observations are consistent with experiments demonstrating that cationic polymer/membrane partition coefficients, not polyplex/membrane partition coefficients, predict successful gene expression. Interestingly, a similar partitioning of cationic polymers into the mitochondrial membranes has been proposed to explain the cytotoxicity of these materials. Thus, the proposed model indicates the same physicochemical property (partitioning into lipid bilayers) is linked to release from endosomes, giving protein expression, and to cytotoxicity.
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Affiliation(s)
- Sriram Vaidyanathan
- Departments of Biomedical Engineering, ‡Chemistry, and §Physics, ∥Program in Applied Physics and ⊥Macromolecular
Science and Engineering, University of Michigan, Ann Arbor, Michigan 48109, United States
| | - Bradford G. Orr
- Departments of Biomedical Engineering, ‡Chemistry, and §Physics, ∥Program in Applied Physics and ⊥Macromolecular
Science and Engineering, University of Michigan, Ann Arbor, Michigan 48109, United States
| | - Mark M. Banaszak Holl
- Departments of Biomedical Engineering, ‡Chemistry, and §Physics, ∥Program in Applied Physics and ⊥Macromolecular
Science and Engineering, University of Michigan, Ann Arbor, Michigan 48109, United States
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Wang LH, Wu T, Wu DC, You YZ. Bioreducible Gene Delivery Vector Capable of Self-Scavenging the Intracellular-Generated ROS Exhibiting High Gene Transfection. ACS APPLIED MATERIALS & INTERFACES 2016; 8:19238-19244. [PMID: 27420138 DOI: 10.1021/acsami.6b04327] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Cationic polymer vectors have received increasing attention for gene delivery in biotechnology over the past 2 decades, but few polymer vectors were used in clinical applications due to their low gene transfection efficacy. One of the major reasons is that the conventional cationic polymers can induce the increasing of intracellular reactive oxygen species (ROS) concentration and oxidative stress, which reduces the gene transfection efficacy. Here, we create a novel class of thioether dendron-branched polymer conjugate and self-assemble this conjugate into bioreducible cationic nanomicelles with disulfide bond connecting the thioether core to the cationic shell. The obtained nanomicelles have a unique ROS self-scavenging ability, thereby dramatically improving gene transfection efficacy.
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Affiliation(s)
- Long-Hai Wang
- Key Laboratory of Soft Matter Chemistry, Chinese Academy of Science, Department of Polymer Science and Engineering, University of Science and Technology of China , Hefei, Anhui 230026, China
| | - Ting Wu
- Key Laboratory of Soft Matter Chemistry, Chinese Academy of Science, Department of Polymer Science and Engineering, University of Science and Technology of China , Hefei, Anhui 230026, China
| | - De-Cheng Wu
- Beijing National Laboratory for Molecular Sciences, State Key Laboratory of Polymer Physics and Chemistry, Institute of Chemistry, Chinese Academy of Sciences , Beijing 100190, China
| | - Ye-Zi You
- Key Laboratory of Soft Matter Chemistry, Chinese Academy of Science, Department of Polymer Science and Engineering, University of Science and Technology of China , Hefei, Anhui 230026, China
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39
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Lü JM, Liang Z, Wang X, Gu J, Yao Q, Chen C. New polymer of lactic-co-glycolic acid-modified polyethylenimine for nucleic acid delivery. Nanomedicine (Lond) 2016; 11:1971-91. [PMID: 27456396 DOI: 10.2217/nnm-2016-0128] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
AIM To develop an improved delivery system for nucleic acids. MATERIALS & METHODS We designed, synthesized and characterized a new polymer of lactic-co-glycolic acid-modified polyethylenimine (LGA-PEI). Functions of LGA-PEI polymer were determined. RESULTS The new LGA-PEI polymer spontaneously formed nanoparticles (NPs) with DNA or RNA, and showed higher DNA or RNA loading efficiency, higher or comparable transfection efficacy, and lower cytotoxicity in several cell types including PANC-1, Jurkat and HEK293 cells, when compared with lipofectamine 2000, branched or linear PEI (25 kDa). In nude mouse models, LGA-PEI showed higher delivery efficiency of plasmid DNA or miRNA mimic into pancreatic and ovarian xenograft tumors. LGA-PEI/DNA NPs showed much lower toxicity than control PEI NPs in mouse models. CONCLUSION The new LGA-PEI polymer is a safer and more effective system to deliver DNA or RNA than PEI.
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Affiliation(s)
- Jian-Ming Lü
- Division of Surgical Research, Michael E DeBakey Department of Surgery, Baylor College of Medicine, One Plaza, Houston, TX 77030, USA
| | - Zhengdong Liang
- Division of Surgical Research, Michael E DeBakey Department of Surgery, Baylor College of Medicine, One Plaza, Houston, TX 77030, USA
| | - Xiaoxiao Wang
- Division of Surgical Research, Michael E DeBakey Department of Surgery, Baylor College of Medicine, One Plaza, Houston, TX 77030, USA
| | - Jianhua Gu
- AFM/SEM Core Facility, The Methodist Hospital Research Institute, 6670 Bertner Avenue, Houston, TX 77030, USA
| | - Qizhi Yao
- Division of Surgical Research, Michael E DeBakey Department of Surgery, Baylor College of Medicine, One Plaza, Houston, TX 77030, USA.,Center for Translational Research on Inflammatory Diseases (CTRID), Michael E. DeBakey VA Medical Center, Houston, TX 77030, USA
| | - Changyi Chen
- Division of Surgical Research, Michael E DeBakey Department of Surgery, Baylor College of Medicine, One Plaza, Houston, TX 77030, USA
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40
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Geinguenaud F, Guenin E, Lalatonne Y, Motte L. Vectorization of Nucleic Acids for Therapeutic Approach: Tutorial Review. ACS Chem Biol 2016; 11:1180-91. [PMID: 26950048 DOI: 10.1021/acschembio.5b01053] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
Oligonucleotides present a high therapeutic potential for a wide variety of diseases. However, their clinical development is limited by their degradation by nucleases and their poor blood circulation time. Depending on the administration mode and the cellular target, these macromolecules will have to cross the vascular endothelium, to diffuse through the extracellular matrix, to be transported through the cell membrane, and finally to reach the cytoplasm. To overcome these physiological barriers, many strategies have been developed. Here, we review different methods of DNA vectorization, discuss limitations and advantages of the various vectors, and provide new perspectives for future development.
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Affiliation(s)
- Frederic Geinguenaud
- Laboratoire CSPBAT,
CNRS UMR 7244, UFR SMBH, Université Paris 13, Sorbonne Paris Cité, F-93017 Bobigny, France
| | - Erwann Guenin
- Inserm, U1148,
Laboratory for Vascular Translational Science, UFR SMBH, Université Paris 13, Sorbonne Paris Cité, F-93017 Bobigny, France
| | - Yoann Lalatonne
- Inserm, U1148,
Laboratory for Vascular Translational Science, UFR SMBH, Université Paris 13, Sorbonne Paris Cité, F-93017 Bobigny, France
- Service
de Médecine Nucléaire, Hôpital Avicenne Assistance Publique-Hôpitaux de Paris 93009 Bobigny France
| | - Laurence Motte
- Inserm, U1148,
Laboratory for Vascular Translational Science, UFR SMBH, Université Paris 13, Sorbonne Paris Cité, F-93017 Bobigny, France
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41
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Vaidyanathan S, Chen J, Orr BG, Banaszak Holl MM. Cationic Polymer Intercalation into the Lipid Membrane Enables Intact Polyplex DNA Escape from Endosomes for Gene Delivery. Mol Pharm 2016; 13:1967-78. [PMID: 27111496 DOI: 10.1021/acs.molpharmaceut.6b00139] [Citation(s) in RCA: 44] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Developing improved cationic polymer-DNA polyplexes for gene delivery requires improved understanding of DNA transport from endosomes into the nucleus. Using a FRET-capable oligonucleotide molecular beacon (OMB), we monitored the transport of intact DNA to cell organelles. We observed that for effective (jetPEI) and ineffective (G5 PAMAM) vectors, the fraction of cells displaying intact OMB in the cytosol (jetPEI ≫ G5 PAMAM) quantitatively predicted the fraction expressing transgene (jetPEI ≫ G5 PAMAM). Intact OMB delivered with PAMAM and confined to endosomes could be released to the cytosol by the subsequent addition of L-PEI, with a corresponding 10-fold increase in transgene expression. These results suggest that future vector development should optimize vectors for intercalation into, and destabilization of, the endosomal membrane. Finally, the study highlights a two-step strategy in which the pDNA is loaded in cells using one vector and endosomal release is mediated by a second agent.
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Affiliation(s)
- Sriram Vaidyanathan
- Departments of †Biomedical Engineering and ‡Chemistry and Programs in §Applied Physics and ⊥Macromolecular Science and Engineering, University of Michigan , Ann Arbor, Michigan 48109, United States
| | - Junjie Chen
- Departments of †Biomedical Engineering and ‡Chemistry and Programs in §Applied Physics and ⊥Macromolecular Science and Engineering, University of Michigan , Ann Arbor, Michigan 48109, United States
| | - Bradford G Orr
- Departments of †Biomedical Engineering and ‡Chemistry and Programs in §Applied Physics and ⊥Macromolecular Science and Engineering, University of Michigan , Ann Arbor, Michigan 48109, United States
| | - Mark M Banaszak Holl
- Departments of †Biomedical Engineering and ‡Chemistry and Programs in §Applied Physics and ⊥Macromolecular Science and Engineering, University of Michigan , Ann Arbor, Michigan 48109, United States
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42
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Tolstyka Z, Phillips H, Cortez M, Wu Y, Ingle N, Bell JB, Hackett PB, Reineke TM. Trehalose-Based Block Copolycations Promote Polyplex Stabilization for Lyophilization and in Vivo pDNA Delivery. ACS Biomater Sci Eng 2016; 2:43-55. [PMID: 26807438 PMCID: PMC4710891 DOI: 10.1021/acsbiomaterials.5b00312] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2015] [Accepted: 11/20/2015] [Indexed: 12/20/2022]
Abstract
The development and thorough characterization of nonviral delivery agents for nucleic acid and genome editing therapies are of high interest to the field of nanomedicine. Indeed, this vehicle class offers the ability to tune chemical architecture/biological activity and readily package nucleic acids of various sizes and morphologies for a variety of applications. Herein, we present the synthesis and characterization of a class of trehalose-based block copolycations designed to stabilize polyplex formulations for lyophilization and in vivo administration. A 6-methacrylamido-6-deoxy trehalose (MAT) monomer was synthesized from trehalose and polymerized via reversible addition-fragmentation chain transfer (RAFT) polymerization to yield pMAT43. The pMAT43 macro-chain transfer agent was then chain-extended with aminoethylmethacrylamide (AEMA) to yield three different pMAT-b-AEMA cationic-block copolymers, pMAT-b-AEMA-1 (21 AEMA repeats), -2 (44 AEMA repeats), and -3 (57 AEMA repeats). These polymers along with a series of controls were used to form polyplexes with plasmids encoding firefly luciferase behind a strong ubiquitous promoter. The trehalose-coated polyplexes were characterized in detail and found to be resistant to colloidal aggregation in culture media containing salt and serum. The trehalose-polyplexes also retained colloidal stability and promoted high gene expression following lyophilization and reconstitution. Cytotoxicity, cellular uptake, and transfection ability were assessed in vitro using both human glioblastoma (U87) and human liver carcinoma (HepG2) cell lines wherein pMAT-b-AEMA-2 was found to have the optimal combination of high gene expression and low toxicity. pMAT-b-AEMA-2 polyplexes were evaluated in mice via slow tail vein infusion. The vehicle displayed minimal toxicity and discouraged nonspecific internalization in the liver, kidney, spleen, and lungs as determined by quantitative polymerase chain reaction (qPCR) and fluorescence imaging experiments. Hydrodynamic infusion of the polyplexes, however, led to very specific localization of the polyplexes to the mouse liver and promoted excellent gene expression in vivo.
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Affiliation(s)
- Zachary
P. Tolstyka
- Department
of Chemistry and Center for Genome Engineering, University of Minnesota, 207 Pleasant Street SE, Minneapolis, Minnesota 55455, United States
| | - Haley Phillips
- Department
of Chemistry and Center for Genome Engineering, University of Minnesota, 207 Pleasant Street SE, Minneapolis, Minnesota 55455, United States
| | - Mallory Cortez
- Department
of Chemistry and Center for Genome Engineering, University of Minnesota, 207 Pleasant Street SE, Minneapolis, Minnesota 55455, United States
| | - Yaoying Wu
- Department
of Chemistry and Center for Genome Engineering, University of Minnesota, 207 Pleasant Street SE, Minneapolis, Minnesota 55455, United States
| | - Nilesh Ingle
- Department
of Chemistry and Center for Genome Engineering, University of Minnesota, 207 Pleasant Street SE, Minneapolis, Minnesota 55455, United States
| | - Jason B. Bell
- Department
of Genetics, Cell Biology and Development, and Center for Genome Engineering, University of Minnesota, Minneapolis, Minnesota 55455, United States
| | - Perry B. Hackett
- Department
of Genetics, Cell Biology and Development, and Center for Genome Engineering, University of Minnesota, Minneapolis, Minnesota 55455, United States
| | - Theresa M. Reineke
- Department
of Chemistry and Center for Genome Engineering, University of Minnesota, 207 Pleasant Street SE, Minneapolis, Minnesota 55455, United States
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43
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Jana P, Sarkar K, Mitra T, Chatterjee A, Gnanamani A, Chakraborti G, Kundu PP. Synthesis of a carboxymethylated guar gum grafted polyethyleneimine copolymer as an efficient gene delivery vehicle. RSC Adv 2016. [DOI: 10.1039/c5ra23447f] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
In the present study, a carboxymethylated guar gum-grafted-polyethyleneimine copolymer (CMGG-g-PEI) was synthesized and characterized by FT-IR, 1H NMR, XRD and zeta potential analyses.
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Affiliation(s)
- Piyali Jana
- Department of Polymer Science & Technology
- University of Calcutta
- Kolkata-700009
- India
| | - Kishor Sarkar
- Department of Pharmaceutical Sciences
- School of Pharmacy
- University of Pittsburgh
- USA
| | - Tapas Mitra
- Department of Polymer Science & Technology
- University of Calcutta
- Kolkata-700009
- India
| | - Abhisek Chatterjee
- Department of Biotechnology & Dr. B.C. Guha Centre for Genetic Engineering
- University of Calcutta
- Kolkata 700019
- India
| | - A. Gnanamani
- Microbiology Division
- CSIR-Central Leather Research Institute
- Chennai 600020
- India
| | - Gopal Chakraborti
- Department of Biotechnology & Dr. B.C. Guha Centre for Genetic Engineering
- University of Calcutta
- Kolkata 700019
- India
| | - P. P. Kundu
- Department of Polymer Science & Technology
- University of Calcutta
- Kolkata-700009
- India
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44
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Iron Oxide Nanoparticles Coated with a Phosphorothioate Oligonucleotide and a Cationic Peptide: Exploring Four Different Ways of Surface Functionalization. NANOMATERIALS 2015; 5:1588-1609. [PMID: 28347083 PMCID: PMC5304778 DOI: 10.3390/nano5041588] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/18/2015] [Revised: 09/22/2015] [Accepted: 09/23/2015] [Indexed: 01/31/2023]
Abstract
The superparamagnetic iron oxide nanoparticles (SPIONs) have great potential in therapeutic and diagnostic applications. Due to their superparamagnetic behavior, they are used clinically as a Magnetic Resonance Imaging (MRI) contrast agent. Iron oxide nanoparticles are also recognized todays as smart drug-delivery systems. However, to increase their specificity, it is essential to functionalize them with a molecule that effectively targets a specific area of the body. Among the molecules that can fulfill this role, peptides are excellent candidates. Oligonucleotides are recognized as potential drugs for various diseases but suffer from poor uptake and intracellular degradation. In this work, we explore four different strategies, based on the electrostatic interactions between the different partners, to functionalize the surface of SPIONs with a phosphorothioate oligonucleotide (ODN) and a cationic peptide labeled with a fluorophore. The internalization of the nanoparticles has been evaluated in vitro on RAW 264.7 cells. Among these strategies, the "«one-step assembly»", i.e., the direct complexation of oligonucleotides and peptides on iron oxide nanoparticles, provides the best way of coating for the internalization of the nanocomplexes.
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45
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Yang J, Feng Y, Zhang L. Biodegradable carrier/gene complexes to mediate the transfection and proliferation of human vascular endothelial cells. POLYM ADVAN TECHNOL 2015. [DOI: 10.1002/pat.3636] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Jing Yang
- School of Chemical Engineering and Technology, Collaborative Innovation Center of Chemical Science and Chemical Engineering (Tianjin); Tianjin University; Tianjin China
| | - Yakai Feng
- School of Chemical Engineering and Technology, Collaborative Innovation Center of Chemical Science and Chemical Engineering (Tianjin); Tianjin University; Tianjin China
- Tianjin University-Helmholtz-Zentrum Geesthacht; Joint Laboratory for Biomaterials and Regenerative Medicine; Tianjin China
| | - Li Zhang
- Tianjin University-Helmholtz-Zentrum Geesthacht; Joint Laboratory for Biomaterials and Regenerative Medicine; Tianjin China
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46
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Abstract
One of the major challenges in the field of nucleic acid delivery is the design of delivery vehicles with attributes that render them safe as well as efficient in transfection. To this end, polycationic vectors have been intensely investigated with native polyethylenimines (PEIs) being the gold standard. PEIs are highly efficient transfectants, but depending on their architecture and size they induce cytotoxicity through different modes of cell death pathways. Here, we briefly review dynamic and integrated cell death processes and pathways, and discuss considerations in cell death assay design and their interpretation in relation to PEIs and PEI-based engineered vectors, which are also translatable for the design and studying the safety of other transfectants.
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47
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Vaidyanathan S, Anderson KB, Merzel RL, Jacobovitz B, Kaushik MP, Kelly CN, van Dongen MA, Dougherty CA, Orr BG, Banaszak Holl MM. Quantitative Measurement of Cationic Polymer Vector and Polymer-pDNA Polyplex Intercalation into the Cell Plasma Membrane. ACS NANO 2015; 9:6097-6109. [PMID: 25952271 PMCID: PMC4771022 DOI: 10.1021/acsnano.5b01263] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
Cationic gene delivery agents (vectors) are important for delivering nucleotides, but are also responsible for cytotoxicity. Cationic polymers (L-PEI, jetPEI, and G5 PAMAM) at 1× to 100× the concentrations required for translational activity (protein expression) induced the same increase in plasma membrane current of HEK 293A cells (30-50 nA) as measured by whole cell patch-clamp. This indicates saturation of the cell membrane by the cationic polymers. The increased currents induced by the polymers are not reversible for over 15 min. Irreversibility on this time scale is consistent with a polymer-supported pore or carpet model and indicates that the cell is unable to clear the polymer from the membrane. For polyplexes, although the charge concentration was the same (at N/P ratio of 10:1), G5 PAMAM and jetPEI polyplexes induced a much larger current increase (40-50 nA) than L-PEI polyplexes (<20 nA). Both free cationic lipid and lipid polyplexes induced a lower increase in current than cationic polymers (<20 nA). To quantify the membrane bound material, partition constants were measured for both free vectors and polyplexes into the HEK 293A cell membrane using a dye influx assay. The partition constants of free vectors increased with charge density of the vectors. Polyplex partition constants did not show such a trend. The long lasting cell plasma permeability induced by exposure to the polymer vectors or the polyplexes provides a plausible mechanism for the toxicity and inflammatory response induced by exposure to these materials.
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Affiliation(s)
- Sriram Vaidyanathan
- †Departments of Biomedical Engineering, ‡Chemistry, and §Physics, and ∥the Programs in Applied Physics and ⊥Biophysics, University of Michigan, Ann Arbor, Michigan 48109, United States
| | - Kevin B Anderson
- †Departments of Biomedical Engineering, ‡Chemistry, and §Physics, and ∥the Programs in Applied Physics and ⊥Biophysics, University of Michigan, Ann Arbor, Michigan 48109, United States
| | - Rachel L Merzel
- †Departments of Biomedical Engineering, ‡Chemistry, and §Physics, and ∥the Programs in Applied Physics and ⊥Biophysics, University of Michigan, Ann Arbor, Michigan 48109, United States
| | - Binyamin Jacobovitz
- †Departments of Biomedical Engineering, ‡Chemistry, and §Physics, and ∥the Programs in Applied Physics and ⊥Biophysics, University of Michigan, Ann Arbor, Michigan 48109, United States
| | - Milan P Kaushik
- †Departments of Biomedical Engineering, ‡Chemistry, and §Physics, and ∥the Programs in Applied Physics and ⊥Biophysics, University of Michigan, Ann Arbor, Michigan 48109, United States
| | - Christina N Kelly
- †Departments of Biomedical Engineering, ‡Chemistry, and §Physics, and ∥the Programs in Applied Physics and ⊥Biophysics, University of Michigan, Ann Arbor, Michigan 48109, United States
| | - Mallory A van Dongen
- †Departments of Biomedical Engineering, ‡Chemistry, and §Physics, and ∥the Programs in Applied Physics and ⊥Biophysics, University of Michigan, Ann Arbor, Michigan 48109, United States
| | - Casey A Dougherty
- †Departments of Biomedical Engineering, ‡Chemistry, and §Physics, and ∥the Programs in Applied Physics and ⊥Biophysics, University of Michigan, Ann Arbor, Michigan 48109, United States
| | - Bradford G Orr
- †Departments of Biomedical Engineering, ‡Chemistry, and §Physics, and ∥the Programs in Applied Physics and ⊥Biophysics, University of Michigan, Ann Arbor, Michigan 48109, United States
| | - Mark M Banaszak Holl
- †Departments of Biomedical Engineering, ‡Chemistry, and §Physics, and ∥the Programs in Applied Physics and ⊥Biophysics, University of Michigan, Ann Arbor, Michigan 48109, United States
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48
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Twin disulfides as opportunity for improving stability and transfection efficiency of oligoaminoethane polyplexes. J Control Release 2015; 205:109-19. [DOI: 10.1016/j.jconrel.2014.12.035] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2014] [Revised: 12/16/2014] [Accepted: 12/24/2014] [Indexed: 12/29/2022]
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49
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Lächelt U, Wagner E. Nucleic Acid Therapeutics Using Polyplexes: A Journey of 50 Years (and Beyond). Chem Rev 2015; 115:11043-78. [DOI: 10.1021/cr5006793] [Citation(s) in RCA: 418] [Impact Index Per Article: 46.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Ulrich Lächelt
- Pharmaceutical
Biotechnology, Department of Pharmacy, Ludwig Maximilians Universität, 81377 Munich, Germany
- Nanosystems
Initiative
Munich (NIM), 80799 Munich, Germany
| | - Ernst Wagner
- Pharmaceutical
Biotechnology, Department of Pharmacy, Ludwig Maximilians Universität, 81377 Munich, Germany
- Nanosystems
Initiative
Munich (NIM), 80799 Munich, Germany
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50
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Gold nanoparticle-enhanced photodynamic therapy: effects of surface charge and mitochondrial targeting. Ther Deliv 2015; 6:307-21. [DOI: 10.4155/tde.14.115] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
Aim: The authors aimed to further improve the efficiency and selectivity of gold nanoparticle (Au NP)-assisted photodynamic therapy by modulating the surface charge of Au NPs and delivering Au NPs particularly to mitochondria of breast cancer cells. Methods: Solid gold nanospheres (˜50 nm) with negative and positive surface charge were synthesized respectively, and mitochondria-targeting Au NPs were prepared by conjugating with triphenylphosphonium molecules. Conclusion: Positively charged Au NPs were preferably taken up by breast cancer cells. Combination of positive surface charge with mitochondria-targeting domain onto Au NPs allowed their accumulation in the mitochondria of breast cancer cells to significantly elevate reactive oxygen species formation in 5-aminolevulinic-acid-enabled photodynamic therapy and improve selective destruction of breast cancer cells.
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