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Alfei S. Cationic Materials for Gene Therapy: A Look Back to the Birth and Development of 2,2-Bis-(hydroxymethyl)Propanoic Acid-Based Dendrimer Scaffolds. Int J Mol Sci 2023; 24:16006. [PMID: 37958989 PMCID: PMC10649874 DOI: 10.3390/ijms242116006] [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: 10/14/2023] [Revised: 10/25/2023] [Accepted: 10/27/2023] [Indexed: 11/15/2023] Open
Abstract
Gene therapy is extensively studied as a realistic and promising therapeutic approach for treating inherited and acquired diseases by repairing defective genes through introducing (transfection) the "healthy" genetic material in the diseased cells. To succeed, the proper DNA or RNA fragments need efficient vectors, and viruses are endowed with excellent transfection efficiency and have been extensively exploited. Due to several drawbacks related to their use, nonviral cationic materials, including lipidic, polymeric, and dendrimer vectors capable of electrostatically interacting with anionic phosphate groups of genetic material, represent appealing alternative options to viral carriers. Particularly, dendrimers are highly branched, nanosized synthetic polymers characterized by a globular structure, low polydispersity index, presence of internal cavities, and a large number of peripheral functional groups exploitable to bind cationic moieties. Dendrimers are successful in several biomedical applications and are currently extensively studied for nonviral gene delivery. Among dendrimers, those derived by 2,2-bis(hydroxymethyl)propanoic acid (b-HMPA), having, unlike PAMAMs, a neutral polyester-based scaffold, could be particularly good-looking due to their degradability in vivo. Here, an overview of gene therapy, its objectives and challenges, and the main cationic materials studied for transporting and delivering genetic materials have been reported. Subsequently, due to their high potential for application in vivo, we have focused on the biodegradable dendrimer scaffolds, telling the history of the birth and development of b-HMPA-derived dendrimers. Finally, thanks to a personal experience in the synthesis of b-HMPA-based dendrimers, our contribution to this field has been described. In particular, we have enriched this work by reporting about the b-HMPA-based derivatives peripherally functionalized with amino acids prepared by us in recent years, thus rendering this paper original and different from the existing reviews.
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Affiliation(s)
- Silvana Alfei
- Department of Pharmacy, University of Genoa, Viale Cembrano 4, 16148 Genova, Italy
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2
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Cheng C, Sui B, Wang M, Hu X, Shi S, Xu P. Carrier-Free Nanoassembly of Curcumin-Erlotinib Conjugate for Cancer Targeted Therapy. Adv Healthc Mater 2020; 9:e2001128. [PMID: 32893507 PMCID: PMC7593849 DOI: 10.1002/adhm.202001128] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2020] [Revised: 08/17/2020] [Indexed: 12/30/2022]
Abstract
Anticancer drug-loaded nanoparticles have been explored extensively to decrease side effects while improving their therapeutic efficacy. However, due to the low drug loading content, premature drug release, nonstandardized carrier structure, and difficulty in predicting the fate of the carrier, only a few nanomedicines have been approved for clincial use. Herein, a carrier-free nanoparticle based on the self-assembly of the curcumin-erlotinib conjugate (EPC) is developed. The EPC nanoassembly exhibits more potent cell killing, better antimigration, and anti-invasion effects for BxPC-3 pancreatic cancer cells than the combination of free curcumin and erlotinib. Furthermore, benefiting from both passive and active tumor targeting effect, EPC nanoassembly can effectively accumulate in the tumor tissue in a xenograft pancreatic tumor mouse model. Consequently, EPC effectively reduces the growth of pancreatic tumors and extends the median survival time of the tumor-bearing mice from 22 to 68 days. In addition, no systemic toxicity is detected in the mice receiving EPC treatment. Attributed to the uniformity of the curcumin-erlotinib conjugate and easiness of scaling up, it is expected that the EPC can be translated into a powerful tool in fighting against pancreatic cancer and other epidermal growth factor receptor positive cancers.
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Affiliation(s)
- Chen Cheng
- Department of Discovery and Biomedical Sciences, College of Pharmacy, University of South Carolina, 715 Sumter, Columbia, SC 29208, United States
| | - Binglin Sui
- Department of Discovery and Biomedical Sciences, College of Pharmacy, University of South Carolina, 715 Sumter, Columbia, SC 29208, United States
| | - Mingming Wang
- Department of Discovery and Biomedical Sciences, College of Pharmacy, University of South Carolina, 715 Sumter, Columbia, SC 29208, United States
| | - Xiangxiang Hu
- Department of Discovery and Biomedical Sciences, College of Pharmacy, University of South Carolina, 715 Sumter, Columbia, SC 29208, United States
| | - Shanshan Shi
- Department of Discovery and Biomedical Sciences, College of Pharmacy, University of South Carolina, 715 Sumter, Columbia, SC 29208, United States
| | - Peisheng Xu
- Department of Discovery and Biomedical Sciences, College of Pharmacy, University of South Carolina, 715 Sumter, Columbia, SC 29208, United States
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3
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Muhammad K, Zhao J, Ullah I, Guo J, Ren XK, Feng Y. Ligand targeting and peptide functionalized polymers as non-viral carriers for gene therapy. Biomater Sci 2020; 8:64-83. [DOI: 10.1039/c9bm01112a] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Ligand targeting and peptide functionalized polymers serve as gene carriers for efficient gene delivery.
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Affiliation(s)
- Khan Muhammad
- School of Chemical Engineering and Technology
- Tianjin University
- Tianjin 300350
- P. R. China
| | - Jing Zhao
- School of Chemical Engineering and Technology
- Tianjin University
- Tianjin 300350
- P. R. China
| | - Ihsan Ullah
- School of Chemical Engineering and Technology
- Tianjin University
- Tianjin 300350
- P. R. China
| | - Jintang Guo
- School of Chemical Engineering and Technology
- Tianjin University
- Tianjin 300350
- P. R. China
- Collaborative Innovation Center of Chemical Science and Chemical Engineering (Tianjin)
| | - Xiang-kui Ren
- School of Chemical Engineering and Technology
- Tianjin University
- Tianjin 300350
- P. R. China
- Collaborative Innovation Center of Chemical Science and Chemical Engineering (Tianjin)
| | - Yakai Feng
- School of Chemical Engineering and Technology
- Tianjin University
- Tianjin 300350
- P. R. China
- Collaborative Innovation Center of Chemical Science and Chemical Engineering (Tianjin)
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4
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Appelbe OK, Kim BK, Rymut N, Wang J, Kron SJ, Yeo Y. Radiation-enhanced delivery of plasmid DNA to tumors utilizing a novel PEI polyplex. Cancer Gene Ther 2017; 25:196-206. [PMID: 29255216 PMCID: PMC6008165 DOI: 10.1038/s41417-017-0004-z] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2017] [Revised: 08/18/2017] [Accepted: 08/23/2017] [Indexed: 01/17/2023]
Abstract
The excitement surrounding the potential of gene therapy has been tempered due to the challenges that have thus far limited its successful implementation in the clinic such as issues regarding stability, transfection efficiency, and toxicity. In this study, low molecular weight linear polyethyleneimine (2.5 kDa) was modified by conjugation to a lipid, lithocholic acid, and complexed with a natural polysaccharide, dermatan sulfate (DS), to mask extra cationic charges of the modified polymer. In vitro examination revealed that these modifications improved complex stability with plasmid DNA (pDNA) and transfection efficiency. This novel ternary polyplex (pDNA/3E/DS) was used to investigate if tumor-targeted radiotherapy led to enhanced accumulation and retention of gene therapy vectors in vivo in tumor-bearing mice. Imaging of biodistribution revealed that tumor irradiation led to increased accumulation and retention as well as decreased off-target tissue buildup of pDNA in not only pDNA/3E/DS, but also in associated PEI-based polyplexes and commercial DNA delivery vehicles. The DS-containing complexes developed in this study displayed the greatest increase in tumor-specific pDNA delivery. These findings demonstrate a step forward in nucleic acid vehicle design as well as a promising approach to overall cancer gene therapy through utilization of radiotherapy as a tool for enhanced delivery.
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Affiliation(s)
- Oliver K Appelbe
- Ludwig Center for Metastasis Research, The University of Chicago, 5758 South Maryland Avenue, MC 9006, Chicago, IL, 60637, USA.,Department of Molecular Genetics and Cellular Biology, The University of Chicago, 929 East 57th Street, GCIS W519, Chicago, IL, 60637, USA
| | - Bieong-Kil Kim
- Department of Industrial and Physical Pharmacy, Purdue University, 575 Stadium Mall Dr., West Lafayette, IN, 47907, USA
| | - Nick Rymut
- Ludwig Center for Metastasis Research, The University of Chicago, 5758 South Maryland Avenue, MC 9006, Chicago, IL, 60637, USA.,Department of Molecular Genetics and Cellular Biology, The University of Chicago, 929 East 57th Street, GCIS W519, Chicago, IL, 60637, USA
| | - Jianping Wang
- Department of Industrial and Physical Pharmacy, Purdue University, 575 Stadium Mall Dr., West Lafayette, IN, 47907, USA.,Department of Pharmaceutics, State Key Laboratory of Natural Medicines, China Pharmaceutical University, Nanjing, China
| | - Stephen J Kron
- Ludwig Center for Metastasis Research, The University of Chicago, 5758 South Maryland Avenue, MC 9006, Chicago, IL, 60637, USA. .,Department of Molecular Genetics and Cellular Biology, The University of Chicago, 929 East 57th Street, GCIS W519, Chicago, IL, 60637, USA.
| | - Yoon Yeo
- Department of Industrial and Physical Pharmacy, Purdue University, 575 Stadium Mall Dr., West Lafayette, IN, 47907, USA.,Weldon School of Biomedical Engineering, Purdue University, West Lafayette, IN, 47907, USA
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Urello MA, Kiick KL, Sullivan MO. ECM turnover-stimulated gene delivery through collagen-mimetic peptide-plasmid integration in collagen. Acta Biomater 2017; 62:167-178. [PMID: 28865990 PMCID: PMC5654588 DOI: 10.1016/j.actbio.2017.08.038] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2017] [Revised: 08/23/2017] [Accepted: 08/28/2017] [Indexed: 12/26/2022]
Abstract
Gene therapies have great potential in regenerative medicine; however, clinical translation has been inhibited by low stability and limited transfection efficiencies. Herein, we incorporate collagen-mimetic peptide (CMP)-linked polyplexes in collagen scaffolds to increase DNA stability by up to 400% and enable tailorable in vivo transgene expression at 100-fold higher levels and 10-fold longer time periods. These improvements were directly linked to a sustained interaction between collagen and polyplexes that persisted during cellular remodeling, polyplex uptake, and intracellular trafficking. Specifically, incorporation of CMPs into polyethylenimine (PEI) polyplexes preserved serum-exposed polyplex-collagen activity over a period of 14days, with 4 orders-of-magnitude more intact DNA present in CMP-modified polyplex-collagen relative to unmodified polyplex-collagen after a 10day incubation under cell culture conditions. CMP-modification also altered endocytic uptake, as indicated by gene silencing studies showing a nearly 50% decrease in transgene expression in response to caveolin-1 silencing in modified samples versus only 30% in unmodified samples. Furthermore, cellular internalization studies demonstrated that polyplex-collagen association persisted within cells in CMP polyplexes, but not in unmodified polyplexes, suggesting that CMP linkage to collagen regulates intracellular transport. Moreover, experiments in an in vivo repair model showed that CMP modification enabled tailoring of transgene expression from 4 to 25days over a range of concentrations. Overall, these findings demonstrate that CMP decoration provides substantial improvements in gene retention, altered release kinetics, improved serum-stability, and improved gene activity in vivo. This versatile technique has great potential for multiple applications in regenerative medicine. STATEMENT OF SIGNIFICANCE In this work, we demonstrate a novel approach for stably integrating DNA into collagen scaffolds to exploit the natural process of collagen remodelling for high efficiency non-viral gene delivery. The incorporation of CMPs into DNA polyplexes, coupled with the innate affinity between CMPs and collagen, not only permitted improved control over polyplex retention and release, but also provided a series of substantial and highly unique benefits via the stable and persistent linkage between CMP-polyplexes and collagen fragments. Specifically, CMP-modification of polyplexes was demonstrated to (i) control release for nearly a month, (ii) improve vector stability under physiological-like conditions, and (iii) provide ligands able to efficiently transfer genes via endocytic collagen pathways. These unique properties overcome key barriers inhibiting non-viral gene therapy.
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Affiliation(s)
- Morgan A Urello
- Dept. of Chemical and Biomolecular Engineering, University of Delaware, Newark, DE 19716, USA
| | - Kristi L Kiick
- Dept. of Materials Science and Engineering, University of Delaware, Newark, DE 19716, USA.
| | - Millicent O Sullivan
- Dept. of Chemical and Biomolecular Engineering, University of Delaware, Newark, DE 19716, USA.
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Nucleic acid combinations: A new frontier for cancer treatment. J Control Release 2017; 256:153-169. [DOI: 10.1016/j.jconrel.2017.04.029] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2017] [Revised: 04/19/2017] [Accepted: 04/20/2017] [Indexed: 12/19/2022]
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7
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Kim JY, Piao C, Kim G, Lee S, Lee MS, Jeong JH, Lee M. Combined Delivery of a Lipopolysaccharide-Binding Peptide and the Heme Oxygenase-1 Gene Using Deoxycholic Acid-Conjugated Polyethylenimine for the Treatment of Acute Lung Injury. Macromol Biosci 2017; 17. [DOI: 10.1002/mabi.201600490] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2016] [Revised: 04/04/2017] [Indexed: 01/31/2023]
Affiliation(s)
- Ji Yeon Kim
- Department of Bioengineering; College of Engineering; Hanyang University; Seoul 04763 South Korea
| | - Chunxian Piao
- Department of Bioengineering; College of Engineering; Hanyang University; Seoul 04763 South Korea
| | - Gyeungyun Kim
- Department of Bioengineering; College of Engineering; Hanyang University; Seoul 04763 South Korea
| | - Seonyeong Lee
- Department of Bioengineering; College of Engineering; Hanyang University; Seoul 04763 South Korea
| | - Min Sang Lee
- School of Pharmacy; Sungkyunkwan University; Suwon 16419 South Korea
| | - Ji Hoon Jeong
- School of Pharmacy; Sungkyunkwan University; Suwon 16419 South Korea
| | - Minhyung Lee
- Department of Bioengineering; College of Engineering; Hanyang University; Seoul 04763 South Korea
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8
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Urello MA, Kiick KL, Sullivan MO. Integration of growth factor gene delivery with collagen-triggered wound repair cascades using collagen-mimetic peptides. Bioeng Transl Med 2016; 1:207-219. [PMID: 27981245 PMCID: PMC5125401 DOI: 10.1002/btm2.10037] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2016] [Revised: 09/06/2016] [Accepted: 09/13/2016] [Indexed: 12/11/2022] Open
Abstract
Growth factors (GFs) play vital roles in wound repair. Many GF therapies have reached clinical trials, but success has been hindered by safety concerns and a lack of efficacy. Previously, we presented an approach to produce protein factors in wound beds through localized gene delivery mediated by biomimetic peptides. Modification of polyethylenimine (PEI) DNA polyplexes with collagen-mimetic peptides (CMPs) enabled tailoring of polyplex release/retention and improved gene transfer activity in a cell-responsive manner. In this work, CMP-mediated delivery from collagen was shown to improve expression of platelet-derived growth factor-BB (PDGF-BB) and promote a diverse range of cellular processes associated with wound healing, including proliferation, extracellular matrix production, and chemotaxis. Collagens were pre-exposed to physiologically-simulating conditions (complete media, 37°C) for days to weeks prior to cell seeding to simulate the environment within typical wound dressings. In cell proliferation studies, significant increases in cell counts were demonstrated in collagen gels containing CMP-modified polyplex versus unmodified polyplex, and these effects became most pronounced following prolonged preincubation periods of greater than a week. Collagen containing CMP-modified polyplexes also induced a twofold increase in gel contraction as well as enhanced directionality and migratory activity in response to cell-secreted PDGF-BB gradients. While these PDGF-BB-triggered behaviors were observed in collagens containing unmodified polyplexes, the responses withstood much longer preincubation periods in CMP-modified polyplex samples (10 days vs. <5 days). Furthermore, enhanced closure rates in an in vitro wound model suggested that CMP-based PDGF-BB delivery may have utility in actual wound repair and other regenerative medicine applications.
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Affiliation(s)
- Morgan A. Urello
- Dept. of Chemical and Biomolecular EngineeringUniversity of DelawareNewarkDE19716
| | - Kristi L. Kiick
- Dept. of Material Science and EngineeringUniversity of DelawareNewarkDE19716
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9
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Cai X, Jin R, Wang J, Yue D, Jiang Q, Wu Y, Gu Z. Bioreducible Fluorinated Peptide Dendrimers Capable of Circumventing Various Physiological Barriers for Highly Efficient and Safe Gene Delivery. ACS APPLIED MATERIALS & INTERFACES 2016; 8:5821-5832. [PMID: 26887907 DOI: 10.1021/acsami.5b11545] [Citation(s) in RCA: 82] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Polymeric vectors have shown great promise in the development of safe and efficient gene delivery systems; however, only a few have been developed in clinical settings due to poor transport across multiple physiological barriers. To address this issue and promote clinical translocation of polymeric vectors, a new type of polymeric vector, bioreducible fluorinated peptide dendrimers (BFPDs), was designed and synthesized by reversible cross-linking of fluorinated low generation peptide dendrimers. Through masterly integration all of the features of reversible cross-linking, fluorination, and polyhedral oligomeric silsesquioxane (POSS) core-based peptide dendrimers, this novel vector exhibited lots of unique features, including (i) inactive surface to resist protein interactions; (ii) virus-mimicking surface topography to augment cellular uptake; (iii) fluorination-mediated efficient cellular uptake, endosome escape, cytoplasm trafficking, and nuclear entry, and (iv) disulfide-cleavage-mediated polyplex disassembly and DNA release that allows efficient DNA transcription. Noteworthy, all of these features are functionally important and can synergistically facilitate DNA transport from solution to the nucleus. As a consequences, BFPDs showed excellent gene transfection efficiency in several cell lines (∼95% in HEK293 cells) and superior biocompatibility compared with polyethylenimine (PEI). Meanwhile BFPDs provided excellent serum resistance in gene delivery. More importantly, BFPDs offer considerable in vivo gene transfection efficiency (in muscular tissues and in HepG2 tumor xenografts), which was approximately 77-fold higher than that of PEI in luciferase activity. These results suggest bioreducible fluorinated peptide dendrimers are a new class of highly efficient and safe gene delivery vectors and should be used in clinical settings.
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Affiliation(s)
- Xiaojun Cai
- National Engineering Research Center for Biomaterials, Sichuan University , Chengdu, Sichuan 610064, P. R. China
| | - Rongrong Jin
- National Engineering Research Center for Biomaterials, Sichuan University , Chengdu, Sichuan 610064, P. R. China
| | - Jiali Wang
- National Engineering Research Center for Biomaterials, Sichuan University , Chengdu, Sichuan 610064, P. R. China
| | - Dong Yue
- National Engineering Research Center for Biomaterials, Sichuan University , Chengdu, Sichuan 610064, P. R. China
| | - Qian Jiang
- National Engineering Research Center for Biomaterials, Sichuan University , Chengdu, Sichuan 610064, P. R. China
| | - Yao Wu
- National Engineering Research Center for Biomaterials, Sichuan University , Chengdu, Sichuan 610064, P. R. China
| | - Zhongwei Gu
- National Engineering Research Center for Biomaterials, Sichuan University , Chengdu, Sichuan 610064, P. R. China
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10
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Liang J, Cheng L, Struckhoff JJ, Ravi N. Investigating triazine-based modification of hyaluronan using statistical designs. Carbohydr Polym 2015; 132:472-80. [PMID: 26256372 PMCID: PMC5787032 DOI: 10.1016/j.carbpol.2015.06.067] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2015] [Revised: 06/16/2015] [Accepted: 06/18/2015] [Indexed: 11/19/2022]
Abstract
Hyaluronan (HA) and its derivatives have been extensively researched for many biomedical applications. To precisely tailor the property of HA by derivatizing it to a pre-determined extent is challenging, yet critical. In this paper, we used 2-chloro-4,6-dimethoxy-1,3,5-triazine (CDMT) and N-methylmorpholine (NMM) to derivatize HA via a triazine-based coupling reaction. Using a fractional factorial (FF) design, we observed that water content in the solvent, and molar ratios of CDMT and NaHCO3 to the carboxylate were the significant factors controlling the derivatization. We investigated how the effect of each factor changes as reaction conditions change. Moreover, by altering the amount of CDMT and NaHCO3, we developed a cubic regression model for precise control of the extent of derivatization using a response surface methodology (RSM) with a D-optimal design. No spurious peaks were detected by (1)H NMR spectrum and only 10% decrease of molecular weight of the derivatized HA was determined by GPC. The HA with 6% modification was relatively biocompatible up to 15 mg/mL.
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Affiliation(s)
- Jue Liang
- Department of Energy, Environmental and Chemical Engineering, Washington University in St. Louis, Saint Louis, MO, USA
| | - Lulu Cheng
- Statistics Technology Center, Monsanto Company, Saint Louis, Missouri, USA
| | - Jessica J Struckhoff
- Department of Energy, Environmental and Chemical Engineering, Washington University in St. Louis, Saint Louis, MO, USA
| | - Nathan Ravi
- Department of Ophthalmology and Visual Sciences, Washington University School of Medicine, Saint Louis, MO, USA; Department of Energy, Environmental and Chemical Engineering, Washington University in St. Louis, Saint Louis, MO, USA; Research and Development, Veterans Affairs Health Care System, Saint Louis, MO, USA.
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11
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KC RB, Kucharski C, Uludağ H. Additive nanocomplexes of cationic lipopolymers for improved non-viral gene delivery to mesenchymal stem cells. J Mater Chem B 2015; 3:3972-3982. [DOI: 10.1039/c4tb02101k] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
Additive polyplexes composed of cationic lipopolymers and hyaluronic acid–pDNA combination for implementing gene delivery to mesenchymal stem cells.
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Affiliation(s)
- Remant Bahadur KC
- Department of Chemical & Material Engineering
- Faculty of Engineering
- University of Alberta
- Edmonton
- Canada
| | - Cezary Kucharski
- Department of Chemical & Material Engineering
- Faculty of Engineering
- University of Alberta
- Edmonton
- Canada
| | - Hasan Uludağ
- Department of Chemical & Material Engineering
- Faculty of Engineering
- University of Alberta
- Edmonton
- Canada
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12
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Bei C, Bindu T, Remant KC, Peisheng X. Dual secured nano-melittin for the safe and effective eradication of cancer cells. J Mater Chem B 2014; 3:25-29. [PMID: 25734006 DOI: 10.1039/c4tb01401d] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
The clinical application of natural and synthetic amphipathic peptides (e.g., melittin) for cancer therapy is hindered by their notorious side effect, lysing red blood cells. To safely deliver a therapeutic peptide to the tumor tissue and kill cancer cells, we developed an environment-sensitive peptide delivery system, dual secured nano-sting (DSNS), through the combination of a zwitterionic glycol chitosan and disulfide bonds. Melittin loaded DSNS could kill almost 100% of MCF-7, HCT-116, SKOV-3, and NCI/ADR-RES (multidrug resistant) cancer cells at the concentration of 5 μM, while not showing any hemolytic effect.
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Affiliation(s)
- Cheng Bei
- Department of Drug Discovery and Biomedical Sciences, South Carolina College of Pharmacy, University of South Carolina, 715 Sumter St., Columbia, SC 29208, USA
| | - Thapa Bindu
- Department of Drug Discovery and Biomedical Sciences, South Carolina College of Pharmacy, University of South Carolina, 715 Sumter St., Columbia, SC 29208, USA
| | - K C Remant
- Department of Drug Discovery and Biomedical Sciences, South Carolina College of Pharmacy, University of South Carolina, 715 Sumter St., Columbia, SC 29208, USA
| | - Xu Peisheng
- Department of Drug Discovery and Biomedical Sciences, South Carolina College of Pharmacy, University of South Carolina, 715 Sumter St., Columbia, SC 29208, USA
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13
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Feng M, Ibrahim BM, Wilson EM, Doh KO, Bergman BK, Park C, Yeo Y. Stabilization of a hyaluronate-associated gene delivery system using calcium ions. Biomater Sci 2014; 2:936-942. [PMID: 25893092 DOI: 10.1039/c4bm00012a] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
A "DPH" ternary complex consisting of plasmid DNA (pDNA), intracellularly degradable polyethyleneimine, and hyaluronic acid (HA) is a promising non-viral gene carrier with low toxicity and good gene transfection efficiency. HA plays a key role in providing an optimal balance between DNA protection and release, but it causes aggregation due to the entanglement of HA chains of neighbouring DPH particles. Here we report that the addition of an optimal level of Ca2+ successfully prevents particle aggregation and maintains a relatively small size. The Ca-stabilized DPH is comparable to DPH in cytotoxicity and gene transfection efficiency. MW monitoring and conductometric titration suggest that such size stabilization effect is partly mediated by the complexation between HA and Ca2+, which enables intra- and intermolecular interactions of HAs.
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Affiliation(s)
- Min Feng
- Department of Pharmacy, School of Pharmaceutical Sciences, Sun Yat-sen University, University Town, Guangzhou 510006, P. R. China
| | - Basma M Ibrahim
- Department of Industrial and Physical Pharmacy, Purdue University, 575 Stadium Mall Drive, West Lafayette, IN 47907, USA
| | - Erin M Wilson
- Department of Industrial and Physical Pharmacy, Purdue University, 575 Stadium Mall Drive, West Lafayette, IN 47907, USA
| | - Kyung-Oh Doh
- Department of Industrial and Physical Pharmacy, Purdue University, 575 Stadium Mall Drive, West Lafayette, IN 47907, USA ; Department of Physiology, College of Medicine, Yeungnam University, 317-1 Daemyung-dong, Daegu, Korea
| | - Brandon K Bergman
- Department of Industrial and Physical Pharmacy, Purdue University, 575 Stadium Mall Drive, West Lafayette, IN 47907, USA
| | - Christopher Park
- Department of Industrial and Physical Pharmacy, Purdue University, 575 Stadium Mall Drive, West Lafayette, IN 47907, USA
| | - Yoon Yeo
- Department of Industrial and Physical Pharmacy, Purdue University, 575 Stadium Mall Drive, West Lafayette, IN 47907, USA ; Weldon School of Biomedical Engineering, Purdue University, West Lafayette, IN 47907, USA ; Biomedical Research Institute, Korea Institute of Science and Technology, Hwarangno 14-gil 5, Seongbuk-gu, Seoul 136-791, Republic of Korea
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14
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Cell line dependent uptake and transfection efficiencies of PEI–anionic glycopolymer systems. Biomaterials 2013; 34:4368-76. [DOI: 10.1016/j.biomaterials.2013.02.043] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2013] [Accepted: 02/14/2013] [Indexed: 11/15/2022]
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15
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K C RB, Thapa B, Xu P. pH and redox dual responsive nanoparticle for nuclear targeted drug delivery. Mol Pharm 2012; 9:2719-29. [PMID: 22876763 DOI: 10.1021/mp300274g] [Citation(s) in RCA: 110] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
To mimic the clinic dosing pattern, initially administering high loading dose and then low maintenance dose, we designed a novel poly(2-(pyridin-2-yldisulfanyl)ethyl acrylate) (PDS) based nanoparticle delivery system. Side chain functional PDS was synthesized by free radical polymerization. Polyethylene glycol and cyclo(Arg-Gly-Asp-d-Phe-Cys) (cRGD) peptide was conjugated to PDS through thiol-disulfide exchange reaction to achieve RPDSG polymer. RPDSG/DOX, RPDSG nanoparticle loaded with doxorubicin, was fabricated by cosolvent dialysis method. The size of the nanoparticles was 50.13 ± 0.5 nm in PBS. The RPDSG/DOX nanoparticle is stable in physiological condition while quickly releasing doxorubicin with the trigger of acidic pH and redox potential. Furthermore, it shows a two-phase release kinetics, providing both loading dose and maintenance dose for cancer therapy. The conjugation of RGD peptide enhanced the cellular uptake and nuclear localization of the RPDSG/DOX nanoparticles. RPDSG/DOX exhibits IC(50) close to that of free doxorubicin for HCT-116 colon cancer cells. Due to the synergetic effect of RGD targeting effect and its two-phase release kinetics, RPDSG/DOX nanoparticles display significantly higher anticancer efficacy than that of free DOX at concentrations higher than 5 μM. These results suggest that RPDSG/DOX could be a promising nanotherapeutic for tumor-targeted chemotherapy.
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Affiliation(s)
- Remant Bahadur K C
- Department of Pharmaceutical and Biomedical Sciences, South Carolina College of Pharmacy, University of South Carolina, 715 Sumter Street, Columbia, South Carolina 29208, United States
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