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Jiang Z, Chen Q, Yang X, Chen X, Li Z, Liu DE, Li W, Lei Y, Gao H. Polyplex Micelle with pH-Responsive PEG Detachment and Functional Tetraphenylene Incorporation to Promote Systemic Gene Expression. Bioconjug Chem 2017; 28:2849-2858. [DOI: 10.1021/acs.bioconjchem.7b00557] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Affiliation(s)
- Zhu Jiang
- School
of Chemistry and Chemical Engineering, Tianjin Key Laboratory of Organic
Solar Cells and Photochemical Conversion, Tianjin University of Technology, Tianjin 300384, P. R. China
| | - Qixian Chen
- School
of Life Science and Biotechnology, Dalian University of Technology, No. 2 Linggong Road, Dalian 116024, P. R. China
| | - Xi Yang
- Department
of Neurosurgery, South Campus, Renji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200127, P. R. China
| | | | | | - De-E Liu
- School
of Chemistry and Chemical Engineering, Tianjin Key Laboratory of Organic
Solar Cells and Photochemical Conversion, Tianjin University of Technology, Tianjin 300384, P. R. China
| | - Wei Li
- School
of Chemistry and Chemical Engineering, Tianjin Key Laboratory of Organic
Solar Cells and Photochemical Conversion, Tianjin University of Technology, Tianjin 300384, P. R. China
| | - Yingjie Lei
- School
of Chemistry and Chemical Engineering, Tianjin Key Laboratory of Organic
Solar Cells and Photochemical Conversion, Tianjin University of Technology, Tianjin 300384, P. R. China
| | - Hui Gao
- School
of Chemistry and Chemical Engineering, Tianjin Key Laboratory of Organic
Solar Cells and Photochemical Conversion, Tianjin University of Technology, Tianjin 300384, P. R. China
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Cao P, Sun X, Liang Y, Gao X, Li X, Li W, Song Z, Li W, Liang G. Gene delivery by a cationic and thermosensitive nanogel promoted established tumor growth inhibition. Nanomedicine (Lond) 2015; 10:1585-97. [PMID: 25706247 DOI: 10.2217/nnm.15.20] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022] Open
Abstract
Aim: In vivo stability and consequent high tumor accumulation is highly desired for nonviral gene therapy. Materials & methods: Here, a well-defined cationic nanogel system (NPS) was facilely prepared for gastric tumor therapy. Results: The physical chemical properties of NPS were finely regulated and investigated. In vitro transfer efficiency of NPS was obviously promoted due to stable polyplex structure, small size, narrow size distribution and weak surface potential. Interestingly, the transfection was further enhanced by its passive targeting function. Intratumor accumulation was significantly promoted post intravenous administrated to Balb/c nude mice. Thus, the established gastric tumor (N87) growth was significantly inhibited by p53 as delivered by NPS. Conclusion: Such noncytotoxic cationic thermosensitive NPS can be effective for practicable gene therapy.
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Affiliation(s)
- Peng Cao
- Department of Neurosurgery, Institute of Neurology, General Hospital of Shenyang Military Area Command, Shenyang, PR China
| | - Xudong Sun
- Key Laboratory for Anisotropy & Texture of Materials, Northeastern University, Shenyang, PR China
| | - Yong Liang
- Department of Neurosurgery, Institute of Neurology, General Hospital of Shenyang Military Area Command, Shenyang, PR China
| | - Xu Gao
- Department of Neurosurgery, Institute of Neurology, General Hospital of Shenyang Military Area Command, Shenyang, PR China
| | - Xiaoming Li
- Department of Neurosurgery, Institute of Neurology, General Hospital of Shenyang Military Area Command, Shenyang, PR China
| | - Wei Li
- Department of Geriatric Neurology, Nanjing Medical University Affiliated to Nanjing Brain Hospital, Nanjing, Jiangsu, PR China
| | - Zhenquan Song
- Department of Neurosurgery, Institute of Neurology, General Hospital of Shenyang Military Area Command, Shenyang, PR China
| | - Wei Li
- International Joint Cancer Institute, Second Military Medical University, Shanghai, PR China
| | - Guobiao Liang
- Department of Neurosurgery, Institute of Neurology, General Hospital of Shenyang Military Area Command, Shenyang, PR China
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Reversibly cross-linked polyplexes enable cancer-targeted gene delivery via self-promoted DNA release and self-diminished toxicity. Biomacromolecules 2015; 16:1390-400. [PMID: 25756930 DOI: 10.1021/acs.biomac.5b00180] [Citation(s) in RCA: 55] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Polycations often suffer from the irreconcilable inconsistency between transfection efficiency and toxicity. Polymers with high molecular weight (MW) and cationic charge feature potent gene delivery capabilities, while in the meantime suffer from strong chemotoxicity, restricted intracellular DNA release, and low stability in vivo. To address these critical challenges, we herein developed pH-responsive, reversibly cross-linked, polyetheleneimine (PEI)-based polyplexes coated with hyaluronic acid (HA) for the effective and targeted gene delivery to cancer cells. Low-MW PEI was cross-linked with the ketal-containing linker, and the obtained high-MW analogue afforded potent gene delivery capabilities during transfection, while rapidly degraded into low-MW segments upon acid treatment in the endosomes, which promoted intracellular DNA release and reduced material toxicity. HA coating of the polyplexes shielded the surface positive charges to enhance their stability under physiological condition and simultaneously reduced the toxicity. Additionally, HA coating allowed active targeting to cancer cells to potentiate the transfection efficiencies in cancer cells in vitro and in vivo. This study therefore provides an effective approach to overcome the efficiency-toxicity inconsistence of nonviral vectors, which contributes insights into the design strategy of effective and safe vectors for cancer gene therapy.
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He ZY, Chu BY, Wei XW, Li J, Edwards CK, Song XR, He G, Xie YM, Wei YQ, Qian ZY. Recent development of poly(ethylene glycol)-cholesterol conjugates as drug delivery systems. Int J Pharm 2014; 469:168-78. [DOI: 10.1016/j.ijpharm.2014.04.056] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2014] [Revised: 04/15/2014] [Accepted: 04/23/2014] [Indexed: 11/28/2022]
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Chen L, Wang H, Zhang Y, Wang Y, Hu Q, Ji J. Bioinspired phosphorylcholine-modified polyplexes as an effective strategy for selective uptake and transfection of cancer cells. Colloids Surf B Biointerfaces 2013; 111:297-305. [DOI: 10.1016/j.colsurfb.2013.06.021] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2013] [Revised: 05/27/2013] [Accepted: 06/11/2013] [Indexed: 10/26/2022]
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Aravindan L, Bicknell KA, Brooks G, Khutoryanskiy VV, Williams AC. A Comparison of Thiolated and Disulfide-Crosslinked Polyethylenimine for Nonviral Gene Delivery. Macromol Biosci 2013; 13:1163-73. [DOI: 10.1002/mabi.201300103] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2013] [Revised: 04/12/2013] [Indexed: 01/23/2023]
Affiliation(s)
- Latha Aravindan
- Reading School of Pharmacy; University of Reading; Whiteknights, PO Box 224, RG6 6AD Reading United Kingdom
| | - Katrina A. Bicknell
- Reading School of Pharmacy; University of Reading; Whiteknights, PO Box 224, RG6 6AD Reading United Kingdom
| | - Gavin Brooks
- School of Biological Sciences; University of Reading; Whiteknights Reading United Kingdom
| | - Vitaliy V. Khutoryanskiy
- Reading School of Pharmacy; University of Reading; Whiteknights, PO Box 224, RG6 6AD Reading United Kingdom
| | - Adrian C. Williams
- Reading School of Pharmacy; University of Reading; Whiteknights, PO Box 224, RG6 6AD Reading United Kingdom
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Tang S, Li W, Zhu Y, Hu Q, Wang Y. Tat-conjugated hyaluronic acid enveloping polyplexes with facilitated nuclear entry and improved transfection. Colloids Surf A Physicochem Eng Asp 2013. [DOI: 10.1016/j.colsurfa.2013.01.028] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
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8
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Li W, Zhang P, Zheng K, Hu Q, Wang Y. Redox-triggered intracellular dePEGylation based on diselenide-linked polycations for DNA delivery. J Mater Chem B 2013; 1:6418-6426. [DOI: 10.1039/c3tb21241f] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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A facile approach to construct hyaluronic acid shielding polyplexes with improved stability and reduced cytotoxicity. Colloids Surf B Biointerfaces 2011; 84:259-66. [PMID: 21300529 DOI: 10.1016/j.colsurfb.2011.01.007] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2010] [Revised: 01/07/2011] [Accepted: 01/08/2011] [Indexed: 11/21/2022]
Abstract
A facile approach for polymer gene carriers was used to construct hyaluronic acid (HA) shielding polyplexes due to the electrostatic interaction. By adding HA to PEI/DNA complexes, the ξ-potential of ternary polyplexes was changed from positive to negative. Spherical particles with diameter about 250nm were observed. Ethidium bromide exclusion assay indicated that the electrostatic complexation was loosened after addition of HA. However, DNA disassembly did not occur. The proper reason was that the intensity of negative charges was not strong enough to release DNA from the complexes in our experiment. The stability of PEI/DNA/HA polyplexes in physiological condition was improved and the cytotoxicity was reduced. Comparing with PEI/DNA polyplexes, the uptake and transfection efficiency of HA shielding polyplexes was lower for HEK293T cells probably due to the reduced adsorptive endocytosis, whereas it was higher for HepG2 cells due to HA receptor mediated endocytosis. This facile approach to constructing HA shielding polyplexes might have great potential application in non-viral gene delivery research and tumor therapy.
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Xu ZX, Zhang R, Wang YX, Hu QL. A facile approach to construct hybrid multi-shell calcium phosphate gene particles. J Zhejiang Univ Sci B 2010; 11:292-7. [PMID: 20349526 DOI: 10.1631/jzus.b0900305] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
The calcium phosphate (CaP) particles have attracted much attention in gene therapy. How to construct stable gene particles was the determining factor. In this study, hybrid multi-shell CaP gene particles were successfully constructed. First, CaP nanoparticles served as a core and were coated with DNA for colloidal stabilization. The xi-potential of DNA-coated CaP nanoparticles was -15 mV. Then polyethylenimine (PEI) was added and adsorbed outside of the DNA layer due to the electrostatic attraction. The xi-potential of hybrid multi-shell CaP particles was slightly positive. With addition of PEI, the hybrid multi-shell particles could condense DNA effectively, which was determined by ethidium bromide (EtBr) exclusion assay. The hybrid particles were spherical and uniform with diameters of about 150 nm at proper conditions. By simple modification of PEI, the hybrid multi-shell CaP gene particles were successfully constructed. They may have great potential in gene therapy.
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Affiliation(s)
- Zhi-xue Xu
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou 310027, China
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Shen Y, Deng J, Luo X, Zhang X, Zeng X, Feng M, Pan S. Synthesis and characterization of a sterically stabilized polyelectrolyte using isophorone diisocyanate as the coupling reagent. JOURNAL OF BIOMATERIALS SCIENCE-POLYMER EDITION 2009; 20:1217-33. [PMID: 19520009 DOI: 10.1163/156856209x452962] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
The aim of the present study was to synthesize and characterize a stabilized polymeric gene delivery carrier, a poly(ethylene glycol)-co-poly(ethylenimine) (PEG-PEI) co-polymer, using isophorone diisocyanate (IPDI) as the coupling reagent. IPDI containing two different active isocyanate functional groups could satisfy the need for a selective conjugation in the two-step coupling reaction procedure. In the first step, methoxy-poly(ethylene glycol) (mPEG) (5 kDa) was combined with one isocyanate group of IPDI to form reactivated pre-polymers, NCO-terminated mPEGs. Then branched polyethylenimine (b-PEI) (25 kDa) reacted with the isocyanate group of a varying number of NCO-terminated mPEGs, leading to PEG-PEI co-polymers with urea bonds. PEG segments in the co-polymer were designed as the stabilizers for steric stabilization of polyplexes. PEG-PEI co-polymers were identified by Fourier transform infrared spectroscopy, nuclear magnetic resonance spectroscopy and gel-permeation chromatography. The thermal properties of PEG-PEI co-polymers were characterized by differential scanning calorimetry and thermogravimetric analysis. The results indicated the existence of hydrogen bonding interaction and partial compatibility between the two phases in the PEG-PEI co-polymers. Finally, this synthetic method allowed us to prepare PEG-PEI co-polymers with the modification degree of PEG varying between 17.8% and 82.6 wt%. This new process was easy to optimize and PEG-PEI co-polymers with high yield could be obtained.
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Affiliation(s)
- Yuan Shen
- School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou 510080, PR China
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Kim SH, Jeong JH, Kim TI, Kim SW, Bull DA. VEGF siRNA delivery system using arginine-grafted bioreducible poly(disulfide amine). Mol Pharm 2009; 6:718-26. [PMID: 19055368 DOI: 10.1021/mp800161e] [Citation(s) in RCA: 70] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Small interfering RNAs (siRNAs) are able to silence their target genes when they are successfully delivered intact into the cytoplasm. Delivery systems that enhance siRNA localization to the cytoplasm can facilitate gene silencing by siRNA therapeutics. We describe an arginine-conjugated poly(cystaminebisacrylamide-diaminohexane) (poly(CBA-DAH-R)), a bioreducible cationic polymer, as an siRNA carrier for therapeutic gene silencing for cancer. After intracellular uptake of the siRNA/poly(CBA-DAH-R) polyplexes, the reductive environment of the cytoplasm cleaves the disulfide linkages in the polymeric backbone, resulting in decomplexing of the siRNA/poly(CBA-DAH-R) polyplexes and release of siRNA molecules throughout the cytoplasm. The siRNA/poly(CBA-DAH-R) polyplexes, which demonstrate increased membrane permeability with arginine modification, have a similar level of cellular uptake as siRNA/bPEI polyplexes. The VEGF siRNA/poly(CBA-DAH-R) polyplexes, however, inhibit VEGF expression to a greater degree than VEGF siRNA/bPEI in various human cancer cell lines. The improved RNAi activity demonstrated by the VEGF siRNA/poly(CBA-DAH-R) polyplexes is due to enhanced intracellular delivery and effective localization to the cytoplasm of the VEGF siRNAs. These results demonstrate that the VEGF siRNA/poly(CBA-DAH-R) polyplex delivery system may useful for siRNA-based approaches for cancer therapy.
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Affiliation(s)
- Sun Hwa Kim
- Department of Pharmaceutics and Pharmaceutical Chemistry, University of Utah, Salt Lake City, Utah 84112, USA
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Construction of caged polyplexes with a reversible intracellular unpacking property to improve stability and transfection. Acta Biomater 2008; 4:1235-43. [PMID: 18514048 DOI: 10.1016/j.actbio.2008.04.020] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2007] [Revised: 03/24/2008] [Accepted: 04/25/2008] [Indexed: 11/24/2022]
Abstract
Cross-linking of protein macromonomers accompanies the assembly of viral particles, which provides the virus with high stability in the host. Following inspiration, caged polyplexes were fabricated via a biomimetic cross-linker. Thiolated polyethylenimine was synthesized and showed sufficient DNA condensation ability. Spherical particles with a diameter of about 150nm were formed at an N/P ratio of 10. Shell-cross-linked polyplexes were then constructed by the oxidation of thiol groups in air. All the results indicate that the cross-linking shell via disulfide bonds could improve the stability of polyplexes in the physiological condition and showed a reversible unpacking property at the intracellular GSH concentration. By selecting the proper preparation conditions, polyplexes caged via a biomimetic cross-linker could efficiently release DNA for transfection.
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