1
|
Zhu L, Luo J, Ren K. Nucleic acid-based artificial nanocarriers for gene therapy. J Mater Chem B 2023; 11:261-279. [PMID: 36524395 DOI: 10.1039/d2tb01179d] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Nucleic acid nanotechnology is a powerful tool in the fields of biosensing and nanomedicine owing to their high editability and easy synthesis and modification. Artificial nucleic acid nanostructures have become an emerging research hotspot as gene carriers with low cytotoxicity and immunogenicity for therapeutic approaches. In this review, recent progress in the design and functional mechanisms of nucleic acid-based artificial nano-vectors especially for exogenous siRNA and antisense oligonucleotide delivery is summarized. Different types of DNA nanocarriers, including DNA junctions, tetrahedrons, origami, hydrogels and scaffolds, are introduced. The enhanced targeting strategies to improve the delivery efficacy are demonstrated. Furthermore, RNA based gene nanocarrier systems by self-assembly of short strands, rolling circle transcription, chemical crosslinking and using RNA motifs and DNA-RNA hybrids are demonstrated. Finally, the outlook and potential challenges are highlighted. The nucleic acid-based artificial nanocarriers offer a promising and precise tool for gene delivery and therapy.
Collapse
Affiliation(s)
- Longyi Zhu
- School of Chemistry and Chemical Engineering, Nanjing University of Science and Technology, Nanjing, 210094, China.
| | - Jun Luo
- School of Chemistry and Chemical Engineering, Nanjing University of Science and Technology, Nanjing, 210094, China.
| | - Kewei Ren
- School of Chemistry and Chemical Engineering, Nanjing University of Science and Technology, Nanjing, 210094, China.
| |
Collapse
|
2
|
Mishra S, Streeter PR. Micelle-Based Nanocarriers for Targeted Delivery of Cargo to Pancreas. Methods Mol Biol 2022; 2592:175-184. [PMID: 36507993 DOI: 10.1007/978-1-0716-2807-2_12] [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] [Indexed: 12/14/2022]
Abstract
Innovations in the field of amphiphilic block copolymers have led to the development of a series of attractive polymer-based drug and gene delivery micellar formulations. The amphiphilic block copolymers' low critical micelle concentration (CMC) results in highly stable nanoscale micelles possessing favorable in vivo safety profiles and biocompatibility, making them an excellent carrier choice for the systemic administration of various poorly soluble drugs. These micelles can also be used as an actively targeted drug delivery system. The targeting is achieved by conjugating specific targeting ligand molecules to the micelle surface. The conjugation takes place at the hydrophilic termini of the copolymers, which forms the shell or surface of the nanomicelles. In our lab, we have developed a targeted Pluronic® F127-based nanoformulation to achieve targeting of specific cell types in the pancreas. To achieve active targeting based on the desired end application, we have conjugated several monoclonal antibodies (~150 kDa IgG) reactive to specific cell types in the pancreas by coupling lysine amino groups of the antibody to the p-nitrophenyl carbonate groups generated on the hydrophilic PEO segments of the Pluronic® F127. The resultant targeted nanomicelles demonstrated high binding specificity and targeting efficiency. These nanomicelles can be used to encapsulate and deliver hydrophobic imaging agents and/or water-insoluble therapeutic small molecules to specific pancreatic cell types, enabling the development of diverse tools for use in the diagnosis and/or treatment of pancreas pathologies.
Collapse
Affiliation(s)
- Swati Mishra
- Brenden-Colson Center for Pancreatic Care, Oregon Health & Science University, Portland, OR, USA.
- Department of Pediatrics, Papé Family Pediatric Research Institute, Oregon Stem Cell Center, Oregon Health and Science University, OR, USA.
| | - Philip R Streeter
- Department of Pediatrics, Papé Family Pediatric Research Institute, Oregon Stem Cell Center, Oregon Health and Science University, OR, USA
| |
Collapse
|
3
|
Targeting anticancer drugs with pluronic aggregates: Recent updates. Int J Pharm 2020; 586:119544. [DOI: 10.1016/j.ijpharm.2020.119544] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2020] [Revised: 06/04/2020] [Accepted: 06/10/2020] [Indexed: 12/20/2022]
|
4
|
Velasco-Rodriguez B, Soltero-Martínez JF, Rosales-Rivera LC, Macías-Balleza ER, Landázuri G, Larios-Durán ER. Adsorption and Interaction of Bovine Serum Albumin and Pluronic P103 Triblock Copolymer on a Gold Electrode: Double-Layer Capacitance Measurements. ACS OMEGA 2020; 5:17347-17355. [PMID: 32715219 PMCID: PMC7377067 DOI: 10.1021/acsomega.0c01704] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 04/14/2020] [Accepted: 06/25/2020] [Indexed: 06/11/2023]
Abstract
The interactions of proteins and other molecules and their adsorption onto substrates is a fascinating topic that has been applied to surface technologies, biosensors, corrosion studies, biotechnologies, and other fields. The success of these applications requires a previous characterization using some analytical techniques that, ordinarily, are not electrochemical. This work proposes analyzing the variation of the double-layer capacitance obtained through impedance electrochemical spectroscopy as an alternative strategy to show evidence of the interactions between proteins and triblock copolymers. The proposal is supported through the study of the interaction and adsorption of bovine serum albumin (BSA) and a commercial triblock copolymer (P103) in phosphate buffer on a gold electrode. The double-layer capacitance and the apparent interface thickness vs polarization potential curves as well as the potential of zero charge for pure P103 (0.6 wt %, corresponding to 6 g L-1), pure BSA (3 mg mL-1), and P103-BSA solutions (0.6 wt % and 3 mg mL-1, respectively) are sensitive enough to show not only the interaction and the adsorption of the species but also the polarization potential where these interactions are taking place. A qualitative and quantitative analysis concerning the double-layer capacitance behavior is given. The significance and impact of this work is also presented.
Collapse
|
5
|
Pal T, Sahu K. Anomalous Variation of Excited-State Proton Transfer Dynamics inside a Triblock Copolymer–Cationic Surfactant Mixed Micelle. J Phys Chem B 2019; 123:8559-8568. [DOI: 10.1021/acs.jpcb.9b06575] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Affiliation(s)
- Tapas Pal
- Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati 781039, Assam, India
| | - Kalyanasis Sahu
- Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati 781039, Assam, India
| |
Collapse
|
6
|
Bodratti AM, Alexandridis P. Amphiphilic block copolymers in drug delivery: advances in formulation structure and performance. Expert Opin Drug Deliv 2018; 15:1085-1104. [DOI: 10.1080/17425247.2018.1529756] [Citation(s) in RCA: 69] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Affiliation(s)
- Andrew M. Bodratti
- Department of Chemical and Biological Engineering, University at Buffalo, The State University of New York (SUNY), Buffalo, NY, USA
| | - Paschalis Alexandridis
- Department of Chemical and Biological Engineering, University at Buffalo, The State University of New York (SUNY), Buffalo, NY, USA
| |
Collapse
|
7
|
Zhao Y, Wu Y, Chen S, Deng H, Zhu X. Building Single-Color AIE-Active Reversible Micelles to Interpret Temperature and pH Stimuli in Both Solutions and Cells. Macromolecules 2018. [DOI: 10.1021/acs.macromol.8b00656] [Citation(s) in RCA: 44] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Affiliation(s)
- Yanjie Zhao
- School of Chemistry and Chemical Engineering, State Key Laboratory of Metal Matrix Composites, Shanghai Key Laboratory for Molecular Engineering of Chiral Drugs, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240, China
| | - Yan Wu
- School of Chemistry and Chemical Engineering, State Key Laboratory of Metal Matrix Composites, Shanghai Key Laboratory for Molecular Engineering of Chiral Drugs, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240, China
| | - Shuo Chen
- School of Chemistry and Chemical Engineering, State Key Laboratory of Metal Matrix Composites, Shanghai Key Laboratory for Molecular Engineering of Chiral Drugs, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240, China
| | - Hongping Deng
- School of Chemistry and Chemical Engineering, State Key Laboratory of Metal Matrix Composites, Shanghai Key Laboratory for Molecular Engineering of Chiral Drugs, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240, China
| | - Xinyuan Zhu
- School of Chemistry and Chemical Engineering, State Key Laboratory of Metal Matrix Composites, Shanghai Key Laboratory for Molecular Engineering of Chiral Drugs, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240, China
| |
Collapse
|
8
|
Ashok Kumar C, Govindarajan R, Kumar U, Karthikeyan M, Varghese B, Manimaran B. Multicomponent self-assembly of Mn(I)-based thiolato-bridged ester functionalized rectangular and V-shaped tetranuclear metallacyclophanes. Inorganica Chim Acta 2018. [DOI: 10.1016/j.ica.2018.01.017] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
|
9
|
|
10
|
Roth CM. Delivery of Genes and Oligonucleotides. Drug Deliv 2016. [DOI: 10.1002/9781118833322.ch25] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
|
11
|
Mondal R, Ghosh N, Mukherjee S. Enhanced Binding of Phenosafranin to Triblock Copolymer F127 Induced by Sodium Dodecyl Sulfate: A Mixed Micellar System as an Efficient Drug Delivery Vehicle. J Phys Chem B 2016; 120:2968-76. [DOI: 10.1021/acs.jpcb.6b00759] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Affiliation(s)
- Ramakanta Mondal
- Department of Chemistry, Indian Institute of Science Education and Research Bhopal, Bhopal Bypass
Road, Bhauri, Bhopal 462
066, Madhya Pradesh, India
| | - Narayani Ghosh
- Department of Chemistry, Indian Institute of Science Education and Research Bhopal, Bhopal Bypass
Road, Bhauri, Bhopal 462
066, Madhya Pradesh, India
| | - Saptarshi Mukherjee
- Department of Chemistry, Indian Institute of Science Education and Research Bhopal, Bhopal Bypass
Road, Bhauri, Bhopal 462
066, Madhya Pradesh, India
| |
Collapse
|
12
|
Hao W, Liu D, Shang Y, Zhang J, Xu S, Liu H. pH-Triggered copolymer micelles as drug nanocarriers for intracellular delivery. RSC Adv 2016. [DOI: 10.1039/c6ra00673f] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
We prepared pH-sensitive polymeric micelles which were used as nano-carriers and exhibited a high loading capacity and pH-triggered release of DOX.
Collapse
Affiliation(s)
- Weiju Hao
- Key Laboratory for Advanced Materials and Department of Chemistry
- East China University of Science and Technology
- Shanghai
- PR China
| | - Danyang Liu
- Key Laboratory for Advanced Materials and Department of Chemistry
- East China University of Science and Technology
- Shanghai
- PR China
| | - Yazhuo Shang
- Key Laboratory for Advanced Materials and Department of Chemistry
- East China University of Science and Technology
- Shanghai
- PR China
| | - Junqi Zhang
- Key Laboratory of Medical Molecular Virology (Ministry of Health and Ministry of Education)
- Department of Medical Microbiology and Parasitology
- School of Basic Medical Sciences
- Fudan University
- Shanghai 200032
| | - Shouhong Xu
- Key Laboratory for Advanced Materials and Department of Chemistry
- East China University of Science and Technology
- Shanghai
- PR China
| | - Honglai Liu
- Key Laboratory for Advanced Materials and Department of Chemistry
- East China University of Science and Technology
- Shanghai
- PR China
| |
Collapse
|
13
|
Miryala B, Feng Y, Omer A, Potta T, Rege K. Quaternization enhances the transgene expression efficacy of aminoglycoside-derived polymers. Int J Pharm 2015; 489:18-29. [DOI: 10.1016/j.ijpharm.2015.04.026] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2015] [Revised: 04/10/2015] [Accepted: 04/12/2015] [Indexed: 01/24/2023]
|
14
|
Recent progress in biomedical applications of Pluronic (PF127): Pharmaceutical perspectives. J Control Release 2015; 209:120-38. [PMID: 25921088 DOI: 10.1016/j.jconrel.2015.04.032] [Citation(s) in RCA: 231] [Impact Index Per Article: 25.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2015] [Revised: 04/23/2015] [Accepted: 04/24/2015] [Indexed: 10/23/2022]
Abstract
Most of the administered anti-cancer drugs are hydrophobic in nature and are known to have poor water solubility, short residence time, rapid clearance from the body and systemic side effects. Polymeric-based targeted particulate carrier system has shown to directly deliver the encapsulated anti-cancer drug to the desired site of action and prevent the interaction of encapsulated drug with the normal cells. Pluronic F127 (PF127) has been widely investigated for its broad-range of therodiagnostic applications in biomedical and pharmaceutical sciences, but rapid dissolution in the physiological fluids, short residence time, rapid clearance, and weak mechanical strength are the main shortcomings that are associated with PF127 and have recently been overcome by making various modifications in the structure of PF127 notably through preparation of PF127-based mixed polymeric micelles, PF127-conjugated nanoparticles and PF127-based hydrophobically modified thermogels. In this article, we have briefly discussed the recent studies that have been conducted on various anti-cancer drugs using PF127 as nano-carrier modified with other copolymers and/or conjugated with magnetic nanoparticles. The key findings of these studies demonstrated that the modified form of PF127 can significantly increase the stability of incorporated hydrophobic drugs with enhanced in vitro cytotoxicity and cellular uptake of anti-cancer drugs. Moreover, the modified form of PF127 has also shown its therapeutic potentials as therodiagnostics in various types of tumors and cancers. Hence, it can be concluded that the modified form of PF127 exhibits significant therodiagnostic effects with increased tumor-specific delivery of anti-cancer drugs having minimal toxic effects as compared to PF127 alone and/or other copolymers.
Collapse
|
15
|
Endogenous lung surfactant inspired pH responsive nanovesicle aerosols: pulmonary compatible and site-specific drug delivery in lung metastases. Sci Rep 2014; 4:7085. [PMID: 25403950 PMCID: PMC4235800 DOI: 10.1038/srep07085] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2014] [Accepted: 10/24/2014] [Indexed: 01/13/2023] Open
Abstract
Concerns related to pulmonary toxicity and non-specificity of nanoparticles have limited their clinical applications for aerosol delivery of chemotherapeutics in lung cancer. We hypothesized that pulmonary surfactant mimetic nanoparticles that offer pH responsive release specifically in tumor may be a possible solution to overcome these issues. We therefore developed lung surfactant mimetic and pH responsive lipid nanovesicles for aerosol delivery of paclitaxel in metastatic lung cancer. 100-200 nm sized nanovesicles showed improved fusogenicity and cytosolic drug release, specifically with cancer cells, thereby resulting in improved cytotoxicity of paclitaxel in B16F10 murine melanoma cells and cytocompatibility with normal lung fibroblasts (MRC 5). The nanovesicles showed airway patency similar to that of endogenous pulmonary surfactant and did not elicit inflammatory response in alveolar macrophages. Their aerosol administration while significantly improving the biodistribution of paclitaxel in comparison to Taxol (i.v.), also showed significantly higher metastastes inhibition (~75%) in comparison to that of i.v. Taxol and i.v. Abraxane. No signs of interstitial pulmonary fiborisis, chronic inflammation and any other pulmonary toxicity were observed with nanovesicle formulation. Overall, these nanovesicles may be a potential platform to efficiently deliver hydrophobic drugs as aerosol in metastatic lung cancer and other lung diseases, without causing pulmonary toxicity.
Collapse
|
16
|
Jeong ES, Son HA, Kim MK, Park KH, Kay S, Chae PS, Kim JW. Fabrication of monodisperse liposomes-in-microgel hybrid microparticles in capillary-based microfluidic devices. Colloids Surf B Biointerfaces 2014; 123:339-44. [DOI: 10.1016/j.colsurfb.2014.09.039] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2014] [Revised: 08/25/2014] [Accepted: 09/17/2014] [Indexed: 11/25/2022]
|
17
|
Ghosh S, Kuchlyan J, Banik D, Kundu N, Roy A, Banerjee C, Sarkar N. Organic Additive, 5-Methylsalicylic Acid Induces Spontaneous Structural Transformation of Aqueous Pluronic Triblock Copolymer Solution: A Spectroscopic Investigation of Interaction of Curcumin with Pluronic Micellar and Vesicular Aggregates. J Phys Chem B 2014; 118:11437-48. [DOI: 10.1021/jp507378w] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Affiliation(s)
- Surajit Ghosh
- Department
of Chemistry, Indian Institute of Technology, Kharagpur 721302, WB, India
| | - Jagannath Kuchlyan
- Department
of Chemistry, Indian Institute of Technology, Kharagpur 721302, WB, India
| | - Debasis Banik
- Department
of Chemistry, Indian Institute of Technology, Kharagpur 721302, WB, India
| | - Niloy Kundu
- Department
of Chemistry, Indian Institute of Technology, Kharagpur 721302, WB, India
| | - Arpita Roy
- Department
of Chemistry, Indian Institute of Technology, Kharagpur 721302, WB, India
| | - Chiranjib Banerjee
- Department
of Chemistry, Indian Institute of Technology, Kharagpur 721302, WB, India
| | - Nilmoni Sarkar
- Department
of Chemistry, Indian Institute of Technology, Kharagpur 721302, WB, India
| |
Collapse
|
18
|
Peddada LY, Garbuzenko OB, Devore DI, Minko T, Roth CM. Delivery of antisense oligonucleotides using poly(alkylene oxide)-poly(propylacrylic acid) graft copolymers in conjunction with cationic liposomes. J Control Release 2014; 194:103-12. [PMID: 25192941 DOI: 10.1016/j.jconrel.2014.08.023] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2014] [Revised: 06/02/2014] [Accepted: 08/23/2014] [Indexed: 12/18/2022]
Abstract
The clinical application of gene silencing is hindered by poor stability and low delivery efficiency of naked oligonucleotides. Here, we present the in vitro and in vivo behaviors of a rationally designed, ternary, self-assembled nanoparticle complex, consisting of an anionic copolymer, cationic DOTAP liposome, and antisense oligonucleotide (AON). The multifunctional copolymers are based on backbone poly(propylacrylic acid) (PPAA), a pH-sensitive hydrophobic polymer, with grafted poly(alkylene oxides) (PAOs) varying in extent of grafting and PAO chemistry. The nanoparticle complexes with PPAA-g-PAO copolymers enhance antisense gene silencing effects in A2780 human ovarian cancer cells. A greater amount of AON is delivered to ovarian tumor xenografts using the ternary copolymer-stabilized delivery system, compared to a binary DOTAP/AON complex, following intraperitoneal injection in mice. Further, intratumoral injection of the nanoparticle complexes containing 1 mol% grafted PAO reduced tumoral bcl-2 expression by up to 60%. The data for complexes across the set of PAO polymers support a strong role for the hydrophilic-lipophilic balance of the graft copolymer in achieving serum stability and cellular uptake. Based upon these results, we anticipate that this novel nanoparticle delivery system can be extended to the delivery of plasmid DNA, siRNA, or aptamers for preclinical and clinical development.
Collapse
Affiliation(s)
- Lavanya Y Peddada
- Department of Biomedical Engineering, Rutgers University, Piscataway, USA
| | | | - David I Devore
- U.S. Army Institute of Surgical Research, Fort Sam Houston, 78234, USA
| | - Tamara Minko
- Department of Pharmaceutics, Rutgers University, Piscataway, USA
| | - Charles M Roth
- Department of Biomedical Engineering, Rutgers University, Piscataway, USA; Department of Chemical and Biochemical Engineering, Rutgers University, Piscataway, USA.
| |
Collapse
|
19
|
Singh V, Khullar P, Dave PN, Kaura A, Bakshi MS, Kaur G. pH and thermo-responsive tetronic micelles for the synthesis of gold nanoparticles: effect of physiochemical aspects of tetronics. Phys Chem Chem Phys 2014; 16:4728-39. [DOI: 10.1039/c3cp55079f] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
|
20
|
Huang SJ, Wang TP, Lue SI, Wang LF. Pentablock copolymers of pluronic F127 and modified poly(2-dimethyl amino)ethyl methacrylate for internalization mechanism and gene transfection studies. Int J Nanomedicine 2013; 8:2011-27. [PMID: 23745045 PMCID: PMC3671801 DOI: 10.2147/ijn.s44222] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
Cationic polymers are one of the major nonviral gene delivery vectors investigated in the past decade. In this study, we synthesized several cationic copolymers using atom transfer radical polymerization (ATRP) for gene delivery vectors: pluronic F127-poly(dimethylaminoethyl methacrylate) (PF127-pDMAEMA), pluronic F127-poly (dimethylaminoethyl methacrylate-tert-butyl acrylate) (PF127-p(DMAEMA-tBA)), and pluronic F127-poly(dimethylaminoethyl methacrylate-acrylic acid) (PF127-p(DMAEMA-AA)). The copolymers showed high buffering capacity and efficiently complexed with plasmid deoxyribonucleic acid (pDNA) to form nanoparticles 80–180 nm in diameter and with positive zeta potentials. In the absence of 10% fetal bovine serum, PF127-p(DMAEMA-AA) showed the highest gene expression and the lowest cytotoxicity in 293T cells. After acrylic acid groups had been linked with a fluorescent dye, the confocal laser scanning microscopic image showed that PF127-p(DMAEMA-AA)/pDNA could efficiently enter the cells. Both clathrin-mediated and caveolae-mediated endocytosis mechanisms were involved. Our results showed that PF127-p(DMAEMA-AA) has great potential to be a gene delivery vector.
Collapse
Affiliation(s)
- Shih-Jer Huang
- Department of Medicinal and Applied Chemistry, Kaohsiung Medical University, Kaohsiung, Taiwan
| | | | | | | |
Collapse
|
21
|
Temperature-responsive cationic block copolymers as nanocarriers for gene delivery. Int J Pharm 2013; 448:105-14. [DOI: 10.1016/j.ijpharm.2013.03.028] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2013] [Revised: 03/11/2013] [Accepted: 03/13/2013] [Indexed: 12/12/2022]
|
22
|
Mishra S, Vaughn AD, Devore DI, Roth CM. Delivery of siRNA silencing Runx2 using a multifunctional polymer-lipid nanoparticle inhibits osteogenesis in a cell culture model of heterotopic ossification. Integr Biol (Camb) 2013; 4:1498-507. [PMID: 23146945 DOI: 10.1039/c2ib20200j] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
Heterotopic ossification (HO) associated with traumatic neurological or musculoskeletal injuries remains a major clinical challenge. One approach to understanding better and potentially treating this condition is to silence one or more genes believed to be responsible for osteogenesis by small interfering RNA (siRNA) post-injury. Improved methods of delivering siRNA to myoprogenitor cells as well as relevant cell culture models of HO are needed to advance this approach. We utilize a model of HO featuring C2C12 myoprogenitor cells stimulated to the osteogenic phenotype by addition of BMP-2. For siRNA delivery, we utilize a nanocomposite consisting of DOTAP-based cationic liposomes coated with a graft copolymer of poly(propylacrylic acid) grafted with polyetheramine (Jeffamine), as this system has been shown previously to deliver antisense oligonucleotides safely into cells and out of endosomes for gene silencing in vitro and in vivo. Delivery of siRNA targeting Runx2, a transcription factor downstream of BMP-2, to stimulated C2C12 cells produced greater than 60% down-regulation of the Runx2 gene. This level of gene silencing was sufficient to inhibit alkaline phosphatase activity over the course of several days and calcium phosphate deposition over the course of 2 weeks. These results show the utility of the BMP-2/C2C12 model for capturing the cellular cell-fate decision in HO. Further, they suggest DOTAP/PPAA-g-Jeffamine as a promising delivery system for siRNA-based therapy for HO.
Collapse
Affiliation(s)
- Swati Mishra
- Department of Biomedical Engineering, Rutgers University, Piscataway, NJ 08854, USA
| | | | | | | |
Collapse
|
23
|
Liang L, Lin S, Chien C. Aluminum Complexes of Tridentate Amine Biphenolate Ligands Containing Distinct
N
‐alkyls: Synthesis and Catalytic Ring‐opening Polymerization. J CHIN CHEM SOC-TAIP 2013. [DOI: 10.1002/jccs.201200559] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Lan‐Chang Liang
- Department of Chemistry and Center for Nanoscience & Nanotechnology, National Sun Yat‐sen University, Kaohsiung 80424, Taiwan
| | - Sheng‐Ta Lin
- Department of Chemistry and Center for Nanoscience & Nanotechnology, National Sun Yat‐sen University, Kaohsiung 80424, Taiwan
| | - Chia‐Cheng Chien
- Department of Chemistry and Center for Nanoscience & Nanotechnology, National Sun Yat‐sen University, Kaohsiung 80424, Taiwan
| |
Collapse
|
24
|
Niece KL, Vaughan AD, Devore DI. Graft copolymer polyelectrolyte complexes for delivery of cationic antimicrobial peptides. J Biomed Mater Res A 2013; 101:2548-58. [PMID: 23364909 DOI: 10.1002/jbm.a.34555] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2012] [Revised: 12/03/2012] [Accepted: 12/04/2012] [Indexed: 12/26/2022]
Abstract
Peptides have enormous potential as therapeutic agents for the treatment of infection, in immunomodulation and for other medical applications, but their hydrolytic degradation in biological fluids is a serious limitation to their in vivo performance. Here we demonstrate the potential utility of polyelectrolyte nanoparticle complexes of novel self-assembling anionic graft copolymers for protecting peptides from degradation in human plasma. The anionic graft copolymers are synthesized by covalently attaching pendent polyetheramine chains to poly(alkylacrylic acid) backbones by carbodiimide coupling. The peptide:copolymer nanocomplexes' particle size, zeta-potential, peptide binding, and controlled release of the peptide are shown to be dependent upon the pendent chain graft density, polymer backbone alkyl groups (propyl vs. methyl), and the nanocomplexes' electrostatic charge ratio. The nanocomplexes can provide substantial protection to the bound peptides from degradation in human plasma for at least 24 h and, in standard microbiological assays are shown to retain some or all of the peptide's antimicrobial activity against a clinically relevant strain of Staphylococcus aureus.
Collapse
Affiliation(s)
- Krista L Niece
- U.S. Army Institute of Surgical Research, 3698 Chambers Pass, Fort Sam Houston, Texas 78234, USA
| | | | | |
Collapse
|
25
|
Joshi N, Kaviratna A, Banerjee R. Multi trigger responsive, surface active lipid nanovesicle aerosols for improved efficacy of paclitaxel in lung cancer. Integr Biol (Camb) 2012; 5:239-48. [DOI: 10.1039/c2ib20122d] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Affiliation(s)
- Nitin Joshi
- WRCBB, Department of Biosciences and Bioengineering, Indian Institute of Technology Bombay, Powai, Mumbai 400076, India. Fax: +91-22 2572 3480; Tel: +91-22 2576 7868
| | - Anubhav Kaviratna
- WRCBB, Department of Biosciences and Bioengineering, Indian Institute of Technology Bombay, Powai, Mumbai 400076, India. Fax: +91-22 2572 3480; Tel: +91-22 2576 7868
| | - Rinti Banerjee
- WRCBB, Department of Biosciences and Bioengineering, Indian Institute of Technology Bombay, Powai, Mumbai 400076, India. Fax: +91-22 2572 3480; Tel: +91-22 2576 7868
| |
Collapse
|