1
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Hanson MG, Grimme CJ, Kreofsky NW, Panda S, Reineke TM. Blended Block Polycation Micelles Enhance Antisense Oligonucleotide Delivery. Bioconjug Chem 2023; 34:1418-1428. [PMID: 37437196 DOI: 10.1021/acs.bioconjchem.3c00186] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/14/2023]
Abstract
Nucleic acid-based medicines and vaccines are becoming an important part of our therapeutic toolbox. One key genetic medicine is antisense oligonucleotides (ASOs), which are short single-stranded nucleic acids that downregulate protein production by binding to mRNA. However, ASOs cannot enter the cell without a delivery vehicle. Diblock polymers containing cationic and hydrophobic blocks self-assemble into micelles that have shown improved delivery compared to linear nonmicelle variants. Yet synthetic and characterization bottlenecks have hindered rapid screening and optimization. In this study, we aim to develop a method to increase throughput and discovery of new micelle systems by mixing diblock polymers together to rapidly form new micelle formulations. We synthesized diblocks containing an n-butyl acrylate block chain extended with cationic moieties amino ethyl acrylamide (A), dimethyl amino ethyl acrylamide (D), or morpholino ethyl acrylamide (M). These diblocks were then self-assembled into homomicelles (A100, D100, and M100)), mixed micelles comprising 2 homomicelles (MixR%+R'%), and blended diblock micelles comprising 2 diblocks blended into one micelle (BldR%R'%) and tested for ASO delivery. Interestingly, we observed that mixing or blending M with A (BldA50M50 and MixA50+M50) did not improve transfection efficiency compared to A100; however, when M was mixed with D, there was a significant increase in transfection efficacy for the mixed micelle MixD50+M50 compared to D100. We further examined mixed and blended D systems at different ratios. We observed a large increase in transfection and minimal change in toxicity when M was mixed with D at a low percentage of D incorporation in mixed diblock micelles (i.e., BldD20M80) compared to D100 and MixD20+M80. To understand the cellular mechanisms that may result in these differences, we added proton pump inhibitor Bafilomycin-A1 (Baf-A1) to the transfection experiments. Formulations that contain D decreased in performance in the presence of Baf-A1, indicating that micelles with D rely on the proton sponge effect for endosomal escape more than micelles with A. This result supports our conclusion that M is able to modulate transfection of D, but not with A. This research shows that polymer blending in a manner similar to that of lipids can significantly boost transfection efficiency and is a facile way to increase throughput of testing, optimization, and successful formulation identification for polymeric nucleic acid delivery systems.
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Affiliation(s)
- Mckenna G Hanson
- Department of Chemistry, University of Minnesota, 207 Pleasant Street SE, Minneapolis, Minnesota 55455, United States
| | - Christian J Grimme
- Department of Chemical Engineering & Materials Science, University of Minnesota, 421 Washington Avenue SE, Minneapolis, Minnesota 55455, United States
| | - Nicholas W Kreofsky
- Department of Chemistry, University of Minnesota, 207 Pleasant Street SE, Minneapolis, Minnesota 55455, United States
| | - Sidharth Panda
- 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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2
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Butt MH, Zaman M, Ahmad A, Khan R, Mallhi TH, Hasan MM, Khan YH, Hafeez S, Massoud EES, Rahman MH, Cavalu S. Appraisal for the Potential of Viral and Nonviral Vectors in Gene Therapy: A Review. Genes (Basel) 2022; 13:1370. [PMID: 36011281 PMCID: PMC9407213 DOI: 10.3390/genes13081370] [Citation(s) in RCA: 35] [Impact Index Per Article: 17.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2022] [Revised: 07/24/2022] [Accepted: 07/26/2022] [Indexed: 12/16/2022] Open
Abstract
Over the past few decades, gene therapy has gained immense importance in medical research as a promising treatment strategy for diseases such as cancer, AIDS, Alzheimer's disease, and many genetic disorders. When a gene needs to be delivered to a target cell inside the human body, it has to pass a large number of barriers through the extracellular and intracellular environment. This is why the delivery of naked genes and nucleic acids is highly unfavorable, and gene delivery requires suitable vectors that can carry the gene cargo to the target site and protect it from biological degradation. To date, medical research has come up with two types of gene delivery vectors, which are viral and nonviral vectors. The ability of viruses to protect transgenes from biological degradation and their capability to efficiently cross cellular barriers have allowed gene therapy research to develop new approaches utilizing viruses and their different genomes as vectors for gene delivery. Although viral vectors are very efficient, science has also come up with numerous nonviral systems based on cationic lipids, cationic polymers, and inorganic particles that provide sustainable gene expression without triggering unwanted inflammatory and immune reactions, and that are considered nontoxic. In this review, we discuss in detail the latest data available on all viral and nonviral vectors used in gene delivery. The mechanisms of viral and nonviral vector-based gene delivery are presented, and the advantages and disadvantages of all types of vectors are also given.
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Affiliation(s)
- Muhammad Hammad Butt
- Department of Pharmaceutics, Faculty of Pharmacy, University of Central Punjab, Lahore 54000, Pakistan; (M.H.B.); (A.A.); (R.K.)
| | - Muhammad Zaman
- Department of Pharmaceutics, Faculty of Pharmacy, University of Central Punjab, Lahore 54000, Pakistan; (M.H.B.); (A.A.); (R.K.)
| | - Abrar Ahmad
- Department of Pharmaceutics, Faculty of Pharmacy, University of Central Punjab, Lahore 54000, Pakistan; (M.H.B.); (A.A.); (R.K.)
| | - Rahima Khan
- Department of Pharmaceutics, Faculty of Pharmacy, University of Central Punjab, Lahore 54000, Pakistan; (M.H.B.); (A.A.); (R.K.)
| | - Tauqeer Hussain Mallhi
- Department of Clinical Pharmacy, College of Pharmacy, Jouf University, Sakaka 72341, Saudi Arabia or (T.H.M.); or (Y.H.K.)
| | - Mohammad Mehedi Hasan
- Department of Biochemistry and Molecular Biology, Faculty of Life Science, Mawlana Bhashani Science and Technology University, Tangail 1902, Bangladesh;
| | - Yusra Habib Khan
- Department of Clinical Pharmacy, College of Pharmacy, Jouf University, Sakaka 72341, Saudi Arabia or (T.H.M.); or (Y.H.K.)
| | - Sara Hafeez
- Department of Biotechnology, Quaid-i-Azam University, Islamabad 45320, Pakistan;
| | - Ehab El Sayed Massoud
- Biology Department, Faculty of Science and Arts in Dahran Aljnoub, King Khalid University, Abha 62529, Saudi Arabia;
- Research Center for Advanced Materials Science (RCAMS), King Khalid University, Abha 61413, Saudi Arabia
- Agriculture Research Centre, Soil, Water and Environment Research Institute, Giza 3725004, Egypt
| | - Md. Habibur Rahman
- Department of Global Medical Science, Wonju College of Medicine, Yonsei University, Wonju 26426, Korea;
| | - Simona Cavalu
- Faculty of Medicine and Pharmacy, University of Oradea, Pta 1 Decembrie 10, 410087 Oradea, Romania
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3
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Arsenie LV, Semsarilar M, Brendel JC, Lacroix-Desmazes P, Ladmiral V, Catrouillet S. Supramolecular co-assembly of water-soluble nucleobase-containing copolymers: bioinspired synthetic platforms towards new biomimetic materials. Polym Chem 2022. [DOI: 10.1039/d2py00872f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
This study presents the development of new co-assembled copolymers architectures at physiological pH (pH=7.4) formed via H-bonds between complementary nucleobase-containing copolymers. Well-defined hydrophilic copolymers were synthesised by RAFT polymerisation: statistical...
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4
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Synthesis of ester-free type poly(trimethylene carbonate) derivatives bearing cycloalkyl side groups. Eur Polym J 2021. [DOI: 10.1016/j.eurpolymj.2021.110782] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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5
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Sharma S, Pukale S, Sahel DK, Singh P, Mittal A, Chitkara D. Folate targeted hybrid lipo-polymeric nanoplexes containing docetaxel and miRNA-34a for breast cancer treatment. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2021; 128:112305. [PMID: 34474856 DOI: 10.1016/j.msec.2021.112305] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/18/2021] [Revised: 07/01/2021] [Accepted: 07/06/2021] [Indexed: 01/05/2023]
Abstract
In spite of established evidence of the synergistic combination of hydrophobic anticancer molecule and microRNA for breast cancer treatment, their in vivo delivery has not been realized owing to their instability in the biological milieu and varied physicochemical properties. The present work reports folate targeted hybrid lipo-polymeric nanoplexes for co-delivering DTX and miR-34a. These nanoplexes exhibited a mean size of 129.3 nm with complexation efficiency at an 8:1 N/P ratio. The obtained nanoplexes demonstrated higher entrapment efficiency of DTX (94.8%) with a sustained release profile up to 85% till 48 h. Further, an improved transfection efficiency in MDA-MB-231 and 4T1 breast cancer cells was observed with uptake primarily through lipid-raft and clathrin-mediated endocytosis. Further, nanoplexes showed improved cytotoxicity (~3.5-5 folds), apoptosis (~1.6-2.0 folds), and change in expression of apoptotic genes (~4-7 folds) compared to the free treatment group in breast cancer cells. In vivo systemic administration of FA-functionalized DTX and FAM-siRNA-loaded nanoplexes showed an improved area under the curve (AUC) as well as circulation half-life compared to free DTX and naked FAM-labelled siRNA. Acute toxicity studies of the cationic polymer showed no toxicity at a dose equivalent to 10 mg/kg based on the hematological, biochemical, and histopathological examination.
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Affiliation(s)
- Saurabh Sharma
- Department of Pharmacy, Birla Institute of Technology and Science, Pilani (BITS Pilani), Vidya Vihar Campus, Pilani 333 031, Rajasthan, India; School of Health Sciences, Department of Pharmaceutical Sciences, University of Petroleum and Energy Studies, Bidholi, Dehradun, Uttarakhand, India
| | - Sudeep Pukale
- Department of Pharmacy, Birla Institute of Technology and Science, Pilani (BITS Pilani), Vidya Vihar Campus, Pilani 333 031, Rajasthan, India
| | - Deepak Kumar Sahel
- Department of Pharmacy, Birla Institute of Technology and Science, Pilani (BITS Pilani), Vidya Vihar Campus, Pilani 333 031, Rajasthan, India
| | - Prabhjeet Singh
- Department of Pharmacy, Birla Institute of Technology and Science, Pilani (BITS Pilani), Vidya Vihar Campus, Pilani 333 031, Rajasthan, India
| | - Anupama Mittal
- Department of Pharmacy, Birla Institute of Technology and Science, Pilani (BITS Pilani), Vidya Vihar Campus, Pilani 333 031, Rajasthan, India
| | - Deepak Chitkara
- Department of Pharmacy, Birla Institute of Technology and Science, Pilani (BITS Pilani), Vidya Vihar Campus, Pilani 333 031, Rajasthan, India.
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6
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Tan LY, Chanthaset N, Nanto S, Soba R, Nagasawa M, Ohno H, Ajiro H. Synthesis and Preparation of Cross-linked Films with Ester-Free Poly(trimethylene carbonate) Bearing Aromatic Urea Moiety. Macromolecules 2021. [DOI: 10.1021/acs.macromol.1c00339] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Affiliation(s)
- Lee Yae Tan
- Graduate School of Materials Science, Nara Institute of Science and Technology, 8916-5 Takayama-cho, Ikoma, Nara 630-0192, Japan
| | - Nalinthip Chanthaset
- Graduate School of Materials Science, Nara Institute of Science and Technology, 8916-5 Takayama-cho, Ikoma, Nara 630-0192, Japan
| | - Shinsuke Nanto
- Nishinomiya Municipal Central Hospital, 8-24 Hayashida-cho, Nishinomiya, Hhyogo 663-8014, Japan
| | - Ryoichi Soba
- Research and Development Department, Otsuka Medical Devices Co., Ltd., Kanda-Tsukasamachi,
Chiyoda-ku, Tokyo 101-0048, Japan
| | - Masakazu Nagasawa
- Research and Development Department, Otsuka Medical Devices Co., Ltd., Kanda-Tsukasamachi,
Chiyoda-ku, Tokyo 101-0048, Japan
| | - Hiroshi Ohno
- Research and Development Department, Otsuka Medical Devices Co., Ltd., Kanda-Tsukasamachi,
Chiyoda-ku, Tokyo 101-0048, Japan
| | - Hiroharu Ajiro
- Graduate School of Materials Science, Nara Institute of Science and Technology, 8916-5 Takayama-cho, Ikoma, Nara 630-0192, Japan
- Data Science Center, Nara Institute of Science and Technology, 8916-5 Takayama-cho, Ikoma, Nara 630-0192, Japan
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7
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Ansari I, Singh P, Mittal A, Mahato RI, Chitkara D. 2,2-Bis(hydroxymethyl) propionic acid based cyclic carbonate monomers and their (co)polymers as advanced materials for biomedical applications. Biomaterials 2021; 275:120953. [PMID: 34218051 DOI: 10.1016/j.biomaterials.2021.120953] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2020] [Revised: 05/26/2021] [Accepted: 05/29/2021] [Indexed: 12/15/2022]
Abstract
Designing grafted biodegradable polymers with tailored multi-functional properties is one of the most researched fields with extensive biomedical applications. Among many biodegradable polymers, polycarbonates have gained much attention due to their ease of synthesis, high drug loading, and excellent biocompatibility profiles. Among various monomers, 2,2-bis(hydroxymethyl) propionic acid (bis-MPA) derived cyclic carbonate monomers have been extensively explored in terms of their synthesis as well as their polymerization. Since the late 90s, significant advancements have been made in the design of bis-MPA derived cyclic carbonate monomers as well as in their reaction schemes. Currently, bis-MPA derived polycarbonates have taken a form of an entire platform with a multitude of applications, the latest being in the field of nanotechnology, targeted drug, and nucleic acid delivery. The present review outlines an up to date developments that have taken place in the last two decades in the design, synthesis, and biomedical applications of bis-MPA derived cyclic carbonates and their (co)polymers.
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Affiliation(s)
- Imran Ansari
- Department of Pharmacy, Birla Institute of Technology and Science, Pilani (BITS Pilani), Vidya Vihar Campus, Pilani, 333 031, Rajasthan, India
| | - Prabhjeet Singh
- Department of Pharmacy, Birla Institute of Technology and Science, Pilani (BITS Pilani), Vidya Vihar Campus, Pilani, 333 031, Rajasthan, India
| | - Anupama Mittal
- Department of Pharmacy, Birla Institute of Technology and Science, Pilani (BITS Pilani), Vidya Vihar Campus, Pilani, 333 031, Rajasthan, India
| | - Ram I Mahato
- Department of Pharmaceutical Sciences, University of Nebraska Medical Center, Omaha, NE, 68198, USA
| | - Deepak Chitkara
- Department of Pharmacy, Birla Institute of Technology and Science, Pilani (BITS Pilani), Vidya Vihar Campus, Pilani, 333 031, Rajasthan, India.
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8
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Yu W, Maynard E, Chiaradia V, Arno MC, Dove AP. Aliphatic Polycarbonates from Cyclic Carbonate Monomers and Their Application as Biomaterials. Chem Rev 2021; 121:10865-10907. [DOI: 10.1021/acs.chemrev.0c00883] [Citation(s) in RCA: 74] [Impact Index Per Article: 24.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Wei Yu
- School of Chemistry, University of Birmingham, Edgbaston, B15 2TT U.K
| | - Edward Maynard
- School of Chemistry, University of Birmingham, Edgbaston, B15 2TT U.K
| | - Viviane Chiaradia
- School of Chemistry, University of Birmingham, Edgbaston, B15 2TT U.K
| | - Maria C. Arno
- School of Chemistry, University of Birmingham, Edgbaston, B15 2TT U.K
- Institute of Cancer and Genomic Sciences, University of Birmingham, Edgbaston, B15 2TT U.K
| | - Andrew P. Dove
- School of Chemistry, University of Birmingham, Edgbaston, B15 2TT U.K
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9
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Nobuoka H, Nagasawa M, Chanthaset N, Yoshida H, Haramiishi Y, Ajiro H. Synthesis of amphiphilic block copolymer using trimethylene carbonate bearing oligo(ethylene glycol) and investigation of thin film including cilostazol. JOURNAL OF POLYMER SCIENCE 2020. [DOI: 10.1002/pol.20200390] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Hiroaki Nobuoka
- Division of Materials Science Nara Institute of Science and Technology Nara Japan
| | - Masakazu Nagasawa
- Research and Development Department, Otsuka Medical Devices Co., Ltd., Kanda‐Tsukasamachi, Chiyoda‐ku Tokyo Japan
| | - Nalinthip Chanthaset
- Division of Materials Science Nara Institute of Science and Technology Nara Japan
| | - Hiroaki Yoshida
- Division of Materials Science Nara Institute of Science and Technology Nara Japan
| | - Yoshiaki Haramiishi
- Division of Materials Science Nara Institute of Science and Technology Nara Japan
| | - Hiroharu Ajiro
- Division of Materials Science Nara Institute of Science and Technology Nara Japan
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10
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Dong Y, Zhou J, Wang C, Wang Y, Deng L, Zhang J, Dong A. Comb‐Like Amphiphilic Polycarbonates with Different Lengths of Cationic Branches for Enhanced siRNA Delivery. Macromol Biosci 2020; 20:e2000143. [DOI: 10.1002/mabi.202000143] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2020] [Accepted: 04/27/2020] [Indexed: 12/23/2022]
Affiliation(s)
- Yanliang Dong
- Department of Polymer Science and TechnologyKey Laboratory of Systems Bioengineering of the Ministry of EducationSchool of Chemical Engineering and TechnologyTianjin University Tianjin 300072 China
| | - Junhui Zhou
- Liming Research & Design Institute of Chemical Industry Co., Ltd. No 69, Wangcheng Road Luoyang Henan Province China
| | - Changrong Wang
- Department of Polymer Science and TechnologyKey Laboratory of Systems Bioengineering of the Ministry of EducationSchool of Chemical Engineering and TechnologyTianjin University Tianjin 300072 China
| | - Yaping Wang
- Department of Polymer Science and TechnologyKey Laboratory of Systems Bioengineering of the Ministry of EducationSchool of Chemical Engineering and TechnologyTianjin University Tianjin 300072 China
- Collaborative Innovation Center of Chemical Science and Engineering (Tianjin) Tianjin 300072 China
| | - Liandong Deng
- Department of Polymer Science and TechnologyKey Laboratory of Systems Bioengineering of the Ministry of EducationSchool of Chemical Engineering and TechnologyTianjin University Tianjin 300072 China
| | - Jianhua Zhang
- Department of Polymer Science and TechnologyKey Laboratory of Systems Bioengineering of the Ministry of EducationSchool of Chemical Engineering and TechnologyTianjin University Tianjin 300072 China
| | - Anjie Dong
- Department of Polymer Science and TechnologyKey Laboratory of Systems Bioengineering of the Ministry of EducationSchool of Chemical Engineering and TechnologyTianjin University Tianjin 300072 China
- Collaborative Innovation Center of Chemical Science and Engineering (Tianjin) Tianjin 300072 China
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11
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Chen CK, Huang PK, Law WC, Chu CH, Chen NT, Lo LW. Biodegradable Polymers for Gene-Delivery Applications. Int J Nanomedicine 2020; 15:2131-2150. [PMID: 32280211 PMCID: PMC7125329 DOI: 10.2147/ijn.s222419] [Citation(s) in RCA: 92] [Impact Index Per Article: 23.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2019] [Accepted: 02/04/2020] [Indexed: 12/24/2022] Open
Abstract
Gene-based therapies have emerged as a new modality for combating a myriad of currently incurable diseases. However, the fragile nature of gene therapeutics has significantly hampered their biomedical applications. Correspondingly, the development of gene-delivery vectors is of critical importance for gene-based therapies. To date, a variety of gene-delivery vectors have been created and utilized for gene delivery. In general, they can be categorized into viral- and non-viral vectors. Due to safety issues associated with viral vectors, non-viral vectors have recently attracted much more research focus. Of these non-viral vectors, polymeric vectors, which have been preferred due to their low immunogenicity, ease of production, controlled chemical composition and high chemical versatility, have constituted an ideal alternative to viral vectors. In particular, biodegradable polymers, which possess advantageous biocompatibility and biosafety, have been considered to have great potential in clinical applications. In this context, the aim of this review is to introduce the recent development and progress of biodegradable polymers for gene delivery applications, especially for their chemical structure design, gene delivery capacity and additional biological functions. Accordingly, we first define and categorize biodegradable polymers, followed by describing their corresponding degradation mechanisms. Various types of biodegradable polymers resulting from natural and synthetic polymers will be introduced and their applications in gene delivery will be examined. Finally, a future perspective regarding the development of biodegradable polymer vectors will be given.
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Affiliation(s)
- Chih-Kuang Chen
- Department of Materials and Optoelectronic Science, National Sun Yat-Sen University, Kaohsiung80424, Taiwan
| | - Ping-Kuan Huang
- Department of Fiber and Composite Materials, Feng Chia University, Taichung40724, Taiwan
| | - Wing-Cheung Law
- Department of Industrial and Systems Engineering, The Hong Kong Polytechnic University, Hong Kong SAR, People’s Republic of China
| | - Chia-Hui Chu
- Institute of Biomedical Engineering and Nanomedicine, National Health Research Institutes, Zhunan35053, Taiwan
| | - Nai-Tzu Chen
- Institute of New Drug Development, China Medical University, Taichung40402, Taiwan
| | - Leu-Wei Lo
- Institute of Biomedical Engineering and Nanomedicine, National Health Research Institutes, Zhunan35053, Taiwan
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12
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Baroni A, Neaga I, Delbosc N, Wells M, Verdy L, Ansseau E, Vanden Eynde JJ, Belayew A, Bodoki E, Oprean R, Hambye S, Blankert B. Bioactive Aliphatic Polycarbonates Carrying Guanidinium Functions: An Innovative Approach for Myotonic Dystrophy Type 1 Therapy. ACS OMEGA 2019; 4:18126-18135. [PMID: 31720515 PMCID: PMC6843715 DOI: 10.1021/acsomega.9b02034] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/03/2019] [Accepted: 09/25/2019] [Indexed: 06/10/2023]
Abstract
Dystrophia myotonica type 1 (DM1) results from nuclear sequestration of splicing factors by a messenger RNA (mRNA) harboring a large (CUG) n repeat array transcribed from the causal (CTG) n DNA amplification. Several compounds were previously shown to bind the (CUG) n RNA and release the splicing factors. We now investigated for the first time the interaction of an aliphatic polycarbonate carrying guanidinium functions to DM1 DNA/RNA model probes by affinity capillary electrophoresis. The apparent association constants (K a) were in the range described for reference compounds such as pentamidine. Further macromolecular engineering could improve association specificity. The polymer presented no toxicity in cell culture at concentrations of 1.6-100.0 μg/mL as evaluated both by MTT and real-time monitoring xCELLigence method. These promising results may lay the foundation for a new branch of potential therapeutic agents for DM1.
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Affiliation(s)
- Alexandra Baroni
- Laboratory
of Pharmaceutical Analysis, Faculty of Medicine and Pharmacy,
Research Institute for Health Sciences and Technology, Laboratory of Molecular
Biology, Faculty of Medicine and Pharmacy, Research Institute for
Health Sciences and Technology, and Laboratory of Organic Chemistry, Faculty of
Sciences, University of Mons, Place du Parc 20, 7000 Mons, Belgium
- Laboratory
of Polymeric and Composite Materials, Center of Innovation and Research
in Materials and Polymers (CIRMAP), University
of Mons. 20 Place du Parc, 7000 Mons, Belgium
| | - Ioan Neaga
- Laboratory
of Pharmaceutical Analysis, Faculty of Medicine and Pharmacy,
Research Institute for Health Sciences and Technology, Laboratory of Molecular
Biology, Faculty of Medicine and Pharmacy, Research Institute for
Health Sciences and Technology, and Laboratory of Organic Chemistry, Faculty of
Sciences, University of Mons, Place du Parc 20, 7000 Mons, Belgium
- Analytical
Chemistry Department, “Iuliu Haţieganu”
University of Medicine and Pharmacy, 4, Louis Pasteur Street, 400349 Cluj-Napoca, Romania
| | - Nicolas Delbosc
- Laboratory
of Polymeric and Composite Materials, Center of Innovation and Research
in Materials and Polymers (CIRMAP), University
of Mons. 20 Place du Parc, 7000 Mons, Belgium
| | - Mathilde Wells
- Laboratory
of Pharmaceutical Analysis, Faculty of Medicine and Pharmacy,
Research Institute for Health Sciences and Technology, Laboratory of Molecular
Biology, Faculty of Medicine and Pharmacy, Research Institute for
Health Sciences and Technology, and Laboratory of Organic Chemistry, Faculty of
Sciences, University of Mons, Place du Parc 20, 7000 Mons, Belgium
| | - Laetitia Verdy
- Laboratory
of Pharmaceutical Analysis, Faculty of Medicine and Pharmacy,
Research Institute for Health Sciences and Technology, Laboratory of Molecular
Biology, Faculty of Medicine and Pharmacy, Research Institute for
Health Sciences and Technology, and Laboratory of Organic Chemistry, Faculty of
Sciences, University of Mons, Place du Parc 20, 7000 Mons, Belgium
| | - Eugénie Ansseau
- Laboratory
of Pharmaceutical Analysis, Faculty of Medicine and Pharmacy,
Research Institute for Health Sciences and Technology, Laboratory of Molecular
Biology, Faculty of Medicine and Pharmacy, Research Institute for
Health Sciences and Technology, and Laboratory of Organic Chemistry, Faculty of
Sciences, University of Mons, Place du Parc 20, 7000 Mons, Belgium
| | - Jean Jacques Vanden Eynde
- Laboratory
of Pharmaceutical Analysis, Faculty of Medicine and Pharmacy,
Research Institute for Health Sciences and Technology, Laboratory of Molecular
Biology, Faculty of Medicine and Pharmacy, Research Institute for
Health Sciences and Technology, and Laboratory of Organic Chemistry, Faculty of
Sciences, University of Mons, Place du Parc 20, 7000 Mons, Belgium
| | - Alexandra Belayew
- Laboratory
of Pharmaceutical Analysis, Faculty of Medicine and Pharmacy,
Research Institute for Health Sciences and Technology, Laboratory of Molecular
Biology, Faculty of Medicine and Pharmacy, Research Institute for
Health Sciences and Technology, and Laboratory of Organic Chemistry, Faculty of
Sciences, University of Mons, Place du Parc 20, 7000 Mons, Belgium
| | - Ede Bodoki
- Analytical
Chemistry Department, “Iuliu Haţieganu”
University of Medicine and Pharmacy, 4, Louis Pasteur Street, 400349 Cluj-Napoca, Romania
| | - Radu Oprean
- Analytical
Chemistry Department, “Iuliu Haţieganu”
University of Medicine and Pharmacy, 4, Louis Pasteur Street, 400349 Cluj-Napoca, Romania
| | - Stéphanie Hambye
- Laboratory
of Pharmaceutical Analysis, Faculty of Medicine and Pharmacy,
Research Institute for Health Sciences and Technology, Laboratory of Molecular
Biology, Faculty of Medicine and Pharmacy, Research Institute for
Health Sciences and Technology, and Laboratory of Organic Chemistry, Faculty of
Sciences, University of Mons, Place du Parc 20, 7000 Mons, Belgium
| | - Bertrand Blankert
- Laboratory
of Pharmaceutical Analysis, Faculty of Medicine and Pharmacy,
Research Institute for Health Sciences and Technology, Laboratory of Molecular
Biology, Faculty of Medicine and Pharmacy, Research Institute for
Health Sciences and Technology, and Laboratory of Organic Chemistry, Faculty of
Sciences, University of Mons, Place du Parc 20, 7000 Mons, Belgium
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13
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Lipid gene nanocarriers for the treatment of skin diseases: Current state-of-the-art. Eur J Pharm Biopharm 2019; 137:95-111. [DOI: 10.1016/j.ejpb.2019.02.012] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2018] [Revised: 01/21/2019] [Accepted: 02/15/2019] [Indexed: 12/19/2022]
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14
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Zirconium (IV) Acetylacetonate: Ring-Opening Initiator Mediating One-Step Synthesis of Biodegradable Polyacids. ADVANCES IN POLYMER TECHNOLOGY 2019. [DOI: 10.1155/2019/3761430] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Biodegradable polyacid is obtained in one-step ring-opening polymerization (ROP) of carboxylic-acid-functionalized six-membered cyclic carbonate mediated with zirconium (IV) acetylacetonate. Exemplary copolymers with L,L-lactide are described as well. Moreover, zirconium (IV) acetylacetonate is found to be active catalyst of trimethylene carbonate (TMC) ROP in presence of carboxylic acid yielding PTMC end-capped with the acid derivative. Polymerization mechanism is hypothesized demonstrating possibilities of the method in work-saving polycation synthesis and one-step method of conjugate synthesis of well-known biocompatible polyesters and polycarbonates.
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15
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Sharma S, Mazumdar S, Italiya KS, Date T, Mahato RI, Mittal A, Chitkara D. Cholesterol and Morpholine Grafted Cationic Amphiphilic Copolymers for miRNA-34a Delivery. Mol Pharm 2018; 15:2391-2402. [PMID: 29747513 DOI: 10.1021/acs.molpharmaceut.8b00228] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
miR-34a is a master tumor suppressor playing a key role in the several signaling mechanisms involved in cancer. However, its delivery to the cancer cells is the bottleneck in its clinical translation. Herein we report cationic amphiphilic copolymers grafted with cholesterol (chol), N, N-dimethyldipropylenetriamine (cation chain) and 4-(2-aminoethyl)morpholine (morph) for miR-34a delivery. The copolymer interacts with miR-34a at low N/P ratios (∼2/1) to form nanoplexes of size ∼108 nm and a zeta potential ∼ +39 mV. In vitro studies in 4T1 and MCF-7 cells indicated efficient transfection efficiency. The intracellular colocalization suggested that the copolymer effectively transported the FAM labeled siRNA into the cytoplasm within 2 h and escaped from the endo-/lysosomal environment. The developed miR-34a nanoplexes inhibited the breast cancer cell growth as confirmed by MTT assay wherein 28% and 34% cancer cell viability was observed in 4T1 and MCF-7 cells, respectively. Further, miR-34a nanoplexes possess immense potential to induce apoptosis in both cell lines.
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Affiliation(s)
- Saurabh Sharma
- Department of Pharmacy , Birla Institute of Technology and Science-Pilani (BITS) , Pilani Campus, Vidya Vihar , Pilani - 333031 , Rajasthan , India
| | - Samrat Mazumdar
- Department of Pharmacy , Birla Institute of Technology and Science-Pilani (BITS) , Pilani Campus, Vidya Vihar , Pilani - 333031 , Rajasthan , India
| | - Kishan S Italiya
- Department of Pharmacy , Birla Institute of Technology and Science-Pilani (BITS) , Pilani Campus, Vidya Vihar , Pilani - 333031 , Rajasthan , India
| | - Tushar Date
- Department of Pharmacy , Birla Institute of Technology and Science-Pilani (BITS) , Pilani Campus, Vidya Vihar , Pilani - 333031 , Rajasthan , India
| | - Ram I Mahato
- Department of Pharmaceutical Sciences , College of Pharmacy, University of Nebraska Medical Center , 986125 Nebraska Medical Center , Omaha , Nebraska 68198-6125 , United States
| | - Anupama Mittal
- Department of Pharmacy , Birla Institute of Technology and Science-Pilani (BITS) , Pilani Campus, Vidya Vihar , Pilani - 333031 , Rajasthan , India
| | - Deepak Chitkara
- Department of Pharmacy , Birla Institute of Technology and Science-Pilani (BITS) , Pilani Campus, Vidya Vihar , Pilani - 333031 , Rajasthan , India
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16
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Bouillon C, Bessin Y, Poncet F, Gary-Bobo M, Dumy P, Barboiu M, Bettache N, Ulrich S. Biomolecular dynamic covalent polymers for DNA complexation and siRNA delivery. J Mater Chem B 2018; 6:7239-7246. [DOI: 10.1039/c8tb01278d] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
Dynamic covalent polymers made from modified amino acids complex nucleic acids and deliver siRNA in living cells.
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Affiliation(s)
| | | | | | | | | | - Mihail Barboiu
- IEM
- Adaptive Supramolecular Nanosystems Group
- Université de Montpellier
- CNRS
- ENSCM
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17
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Matsukizono H, Endo T. Phosgene-Free Syntheses and Hydrolytic Properties of Water-Soluble Polyhydroxyurethanes with Ester-Carbonate-Ether Structures in Their Main Chains. MACROMOL CHEM PHYS 2017. [DOI: 10.1002/macp.201700043] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Hiroyuki Matsukizono
- Molecular Engineering Institute; Kindai University; 11-6 Kayanomori Iizuka Fukuoka 820-8555 Japan
| | - Takeshi Endo
- Molecular Engineering Institute; Kindai University; 11-6 Kayanomori Iizuka Fukuoka 820-8555 Japan
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18
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Frère A, Baroni A, Hendrick E, Delvigne AS, Orange F, Peulen O, Dakwar GR, Diricq J, Dubois P, Evrard B, Remaut K, Braeckmans K, De Smedt SC, Laloy J, Dogné JM, Feller G, Mespouille L, Mottet D, Piel G. PEGylated and Functionalized Aliphatic Polycarbonate Polyplex Nanoparticles for Intravenous Administration of HDAC5 siRNA in Cancer Therapy. ACS APPLIED MATERIALS & INTERFACES 2017; 9:2181-2195. [PMID: 28029254 DOI: 10.1021/acsami.6b15064] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Guanidine and morpholine functionalized aliphatic polycarbonate polymers are able to deliver efficiently histone deacetylase 5 (HDAC5) siRNA into the cytoplasm of cancer cells in vitro leading to a decrease of cell proliferation were previously developed. To allow these biodegradable and biocompatible polyplex nanoparticles to overcome the extracellular barriers and be effective in vivo after an intravenous injection, polyethylene glycol chains (PEG750 or PEG2000) were grafted on the polymer structure. These nanoparticles showed an average size of about 150 nm and a slightly positive ζ-potential with complete siRNA complexation. Behavior of PEGylated and non-PEGylated polyplexes were investigated in the presence of serum, in terms of siRNA complexation (fluorescence correlation spectroscopy), size (dynamic light scattering and single-particle tracking), interaction with proteins (isothermal titration calorimetry) and cellular uptake. Surprisingly, both PEGylated and non-PEGylated formulations presented relatively good behavior in the presence of fetal bovine serum (FBS). Hemocompatibility tests showed no effect of these polyplexes on hemolysis and coagulation. In vivo biodistribution in mice was performed and showed a better siRNA accumulation at the tumor site for PEGylated polyplexes. However, cellular uptake in protein-rich conditions showed that PEGylated polyplex lost their ability to interact with biological membranes and enter into cells, showing the importance to perform in vitro investigations in physiological conditions closed to in vivo situation. In vitro, the efficiency of PEGylated nanoparticles decreases compared to non-PEGylated particles, leading to the loss of the antiproliferative effect on cancer cells.
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Affiliation(s)
- Antoine Frère
- Laboratory of Pharmaceutical Technology and Biopharmacy (LTPB) - Center for Interdisciplinary Research on Medicines (CIRM), University of Liege , Avenue Hippocrate 15, 4000 Liege, Belgium
- Protein Signalisation and Interaction (PSI) - GIGA, University of Liege , Avenue de l'Hopital 11, 4000 Liege, Belgium
| | - Alexandra Baroni
- Laboratory of Polymeric and Composite Materials, Center of Innovation and Research in Materials and Polymers (CIRMAP), Research Institute for Health Sciences and Technology, University of Mons , Place du Parc 20, 7000 Mons, Belgium
| | - Elodie Hendrick
- Protein Signalisation and Interaction (PSI) - GIGA, University of Liege , Avenue de l'Hopital 11, 4000 Liege, Belgium
| | - Anne-Sophie Delvigne
- Namur Nanosafety Center (NNC), NAmur Research Institute for LIfe Sciences (NARILIS), Department of Pharmacy, University of Namur , Rue de Bruxelles 61, 5000 Namur, Belgium
| | - François Orange
- Centre Commun de Microscopie Appliquée, University of Nice-Sophia Antipolis , Parc Valrose, 06108 Nice, France
| | - Olivier Peulen
- Metastasis Research Laboratory (MRL) - GIGA, University of Liege , Avenue Hippocrate 15, 4000 Liege, Belgium
| | - George R Dakwar
- Laboratory for General Biochemistry and Physical Pharmacy, Ghent Research Group on Nanomedicines, Faculty of Pharmacy, Ghent University , Ottergemsesteenweg 460, 9000 Ghent, Belgium
| | - Jérôme Diricq
- Laboratory of Polymeric and Composite Materials, Center of Innovation and Research in Materials and Polymers (CIRMAP), Research Institute for Health Sciences and Technology, University of Mons , Place du Parc 20, 7000 Mons, Belgium
| | - Philippe Dubois
- Laboratory of Polymeric and Composite Materials, Center of Innovation and Research in Materials and Polymers (CIRMAP), Research Institute for Health Sciences and Technology, University of Mons , Place du Parc 20, 7000 Mons, Belgium
| | - Brigitte Evrard
- Laboratory of Pharmaceutical Technology and Biopharmacy (LTPB) - Center for Interdisciplinary Research on Medicines (CIRM), University of Liege , Avenue Hippocrate 15, 4000 Liege, Belgium
| | - Katrien Remaut
- Laboratory for General Biochemistry and Physical Pharmacy, Ghent Research Group on Nanomedicines, Faculty of Pharmacy, Ghent University , Ottergemsesteenweg 460, 9000 Ghent, Belgium
| | - Kevin Braeckmans
- Laboratory for General Biochemistry and Physical Pharmacy, Ghent Research Group on Nanomedicines, Faculty of Pharmacy, Ghent University , Ottergemsesteenweg 460, 9000 Ghent, Belgium
| | - Stefaan C De Smedt
- Laboratory for General Biochemistry and Physical Pharmacy, Ghent Research Group on Nanomedicines, Faculty of Pharmacy, Ghent University , Ottergemsesteenweg 460, 9000 Ghent, Belgium
| | - Julie Laloy
- Namur Nanosafety Center (NNC), NAmur Research Institute for LIfe Sciences (NARILIS), Department of Pharmacy, University of Namur , Rue de Bruxelles 61, 5000 Namur, Belgium
| | - Jean-Michel Dogné
- Namur Nanosafety Center (NNC), NAmur Research Institute for LIfe Sciences (NARILIS), Department of Pharmacy, University of Namur , Rue de Bruxelles 61, 5000 Namur, Belgium
| | - Georges Feller
- Laboratory of Biochemistry, Centre for Protein Engineering (CIP), University of Liège , Allée du 6 Août 13, 4000 Liège, Belgium
| | - Laetitia Mespouille
- Laboratory of Polymeric and Composite Materials, Center of Innovation and Research in Materials and Polymers (CIRMAP), Research Institute for Health Sciences and Technology, University of Mons , Place du Parc 20, 7000 Mons, Belgium
| | - Denis Mottet
- Protein Signalisation and Interaction (PSI) - GIGA, University of Liege , Avenue de l'Hopital 11, 4000 Liege, Belgium
| | - Géraldine Piel
- Laboratory of Pharmaceutical Technology and Biopharmacy (LTPB) - Center for Interdisciplinary Research on Medicines (CIRM), University of Liege , Avenue Hippocrate 15, 4000 Liege, Belgium
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Yilmaz ZE, Jérôme C. Polyphosphoesters: New Trends in Synthesis and Drug Delivery Applications. Macromol Biosci 2016; 16:1745-1761. [PMID: 27654308 DOI: 10.1002/mabi.201600269] [Citation(s) in RCA: 43] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2016] [Revised: 08/18/2016] [Indexed: 11/06/2022]
Abstract
Polymers with repeating phosphoester linkages in the backbone are biodegradable materials that emerge as a promising class of novel biomaterials, especially in the field of drug delivery systems. In contrast to aliphatic polyesters, the pentavalency of the phosphorus atom offers a large diversity of structures and as a consequence a wide range of properties for these materials. In this paper, it is focused on the synthesis of well-defined polyphosphoesters (PPEs) by organocatalyzed ring-opening polymerization, improving the functionalities by combination with click reactions, degradation of functional PPEs and their cytotoxicity, and inputs for applications in drug delivery.
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Affiliation(s)
- Zeynep Ergul Yilmaz
- Center for Education and Research on Macromolecules (CERM), University of Liège (ULg), CESAM-RU, Sart Tilman, Building B6a, Liège, B-4000, Belgium
| | - Christine Jérôme
- Center for Education and Research on Macromolecules (CERM), University of Liège (ULg), CESAM-RU, Sart Tilman, Building B6a, Liège, B-4000, Belgium
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20
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Furst T, Bettonville V, Farcas E, Frere A, Lechanteur A, Evrard B, Fillet M, Piel G, Servais AC. Capillary electrophoresis method to determine siRNA complexation with cationic liposomes. Electrophoresis 2016; 37:2685-2691. [PMID: 27396918 DOI: 10.1002/elps.201600249] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2016] [Revised: 06/27/2016] [Accepted: 07/04/2016] [Indexed: 11/08/2022]
Abstract
Small interfering RNA (siRNA) inducing gene silencing has great potential to treat many human diseases. To ensure effective siRNA delivery, it must be complexed with an appropriate vector, generally nanoparticles. The nanoparticulate complex requires an optimal physiochemical characterization and the complexation efficiency has to be precisely determined. The methods usually used to measure complexation in gel electrophoresis and RiboGreen® fluorescence-based assay. However, those approaches are not automated and present some drawbacks such as the low throughput and the use of carcinogenic reagents. The aim of this study is to develop a new simple and fast method to accurately quantify the complexation efficiency. In this study, capillary electrophoresis (CE) was used to determine the siRNA complexation with cationic liposomes. The short-end injection mode applied enabled siRNA detection in less than 5 min. Moreover, the CE technique offers many advantages compared with the other classical methods. It is automated, does not require sample preparation and expensive reagents. Moreover, no mutagenic risk is associated with the CE approach since no carcinogenic product is used. Finally, this methodology can also be extended for the characterization of other types of nanoparticles encapsulating siRNA, such as cationic polymeric nanoparticles.
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Affiliation(s)
- Tania Furst
- Laboratory of Pharmaceutical Technology and Biopharmacy, Department of Pharmaceutical Sciences - CIRM, University of Liege, Liege, Belgium.
| | - Virginie Bettonville
- Laboratory for the Analysis of Medicines, Department of Pharmaceutical Sciences - CIRM, University of Liege, Liege, Belgium
| | - Elena Farcas
- Laboratory for the Analysis of Medicines, Department of Pharmaceutical Sciences - CIRM, University of Liege, Liege, Belgium
| | - Antoine Frere
- Laboratory of Pharmaceutical Technology and Biopharmacy, Department of Pharmaceutical Sciences - CIRM, University of Liege, Liege, Belgium
| | - Anna Lechanteur
- Laboratory of Pharmaceutical Technology and Biopharmacy, Department of Pharmaceutical Sciences - CIRM, University of Liege, Liege, Belgium
| | - Brigitte Evrard
- Laboratory of Pharmaceutical Technology and Biopharmacy, Department of Pharmaceutical Sciences - CIRM, University of Liege, Liege, Belgium
| | - Marianne Fillet
- Laboratory for the Analysis of Medicines, Department of Pharmaceutical Sciences - CIRM, University of Liege, Liege, Belgium
| | - Géraldine Piel
- Laboratory of Pharmaceutical Technology and Biopharmacy, Department of Pharmaceutical Sciences - CIRM, University of Liege, Liege, Belgium
| | - Anne-Catherine Servais
- Laboratory for the Analysis of Medicines, Department of Pharmaceutical Sciences - CIRM, University of Liege, Liege, Belgium
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21
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Barouti G, Khalil A, Orione C, Jarnouen K, Cammas-Marion S, Loyer P, Guillaume SM. Poly(trimethylene carbonate)/Poly(malic acid) Amphiphilic Diblock Copolymers as Biocompatible Nanoparticles. Chemistry 2016; 22:2819-30. [PMID: 26791328 DOI: 10.1002/chem.201504824] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2015] [Indexed: 12/18/2022]
Abstract
Amphiphilic polycarbonate-poly(hydroxyalkanoate) diblock copolymers, namely, poly(trimethylene carbonate) (PTMC)-b-poly(β-malic acid) (PMLA), are reported for the first time. The synthetic strategy relies on commercially available catalysts and initiator. The controlled ring-opening polymerization (ROP) of trimethylene carbonate (TMC) catalyzed by the organic guanidine base 1,5,7-triazabicyclo[4.4.0]dec-5-ene (TBD), associated with iPrOH as an initiator, provided iPrO-PTMC-OH, which served as a macroinitiator in the controlled ROP of benzyl β-malolactonate (MLABe) catalyzed by the neodymium triflate salt (Nd(OTf)3). The resulting hydrophobic iPrO-PTMC-b-PMLABe-OH copolymers were then hydrogenolyzed into the parent iPrO-PTMC-b-PMLA-OH copolymers. A range of well-defined copolymers, featuring different sizes of segments (Mn,NMR up to 9300 g mol(-1) ; ÐM =1.28-1.40), were thus isolated in gram quantities, as evidenced by NMR spectroscopy, size exclusion chromatography, thermogravimetric analysis, differential scanning calorimetry, and contact angle analyses. Subsequently, PTMC-b-PMLA copolymers with different hydrophilic weight fractions (11-75 %) self-assembled in phosphate-buffered saline upon nanoprecipitation into well-defined nano-objects with Dh =61-176 nm, a polydispersity index <0.25, and a negative surface charge, as characterized by dynamic light scattering and zeta-potential analyses. In addition, these nanoparticles demonstrated no significant effect on cell viability at low concentrations, and a very low cytotoxicity at high concentrations only for PTMC-b-PMLA copolymers exhibiting hydrophilic fractions over 47 %, thus illustrating the potential of these copolymers as promising nanoparticles.
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Affiliation(s)
- Ghislaine Barouti
- Institut des Sciences Chimiques de Rennes, UMR 6226 CNRS, Université de Rennes 1, Campus de Beaulieu, 263 Avenue du Général Leclerc, 35042, Rennes Cedex, France
| | - Ali Khalil
- Institut des Sciences Chimiques de Rennes, UMR 6226 CNRS, Université de Rennes 1, Campus de Beaulieu, 263 Avenue du Général Leclerc, 35042, Rennes Cedex, France
| | - Clement Orione
- Centre Régional de Mesures Physiques de l'Ouest, Université de Rennes 1, Campus de Beaulieu, 35042, Rennes Cedex, France
| | - Kathleen Jarnouen
- INSERM, UMR991, Liver, Metabolisms and Cancer, CHU Pontchaillou, 35033 Rennes Cedex -, Université de Rennes 1, 35043, Rennes Cedex, France
| | - Sandrine Cammas-Marion
- Ecole Nationale Supérieure de Chimie de Rennes, Institut des Sciences Chimiques de Rennes, UMR 6226 CNRS, Université de Rennes 1, 11 Allée de Beaulieu CS 50837, 35708, Rennes Cedex, France
| | - Pascal Loyer
- INSERM, UMR991, Liver, Metabolisms and Cancer, CHU Pontchaillou, 35033 Rennes Cedex -, Université de Rennes 1, 35043, Rennes Cedex, France
| | - Sophie M Guillaume
- Institut des Sciences Chimiques de Rennes, UMR 6226 CNRS, Université de Rennes 1, Campus de Beaulieu, 263 Avenue du Général Leclerc, 35042, Rennes Cedex, France.
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