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Tang Y, Yin L, Gao S, Long X, Du Z, Zhou Y, Zhao S, Cao Y, Pan S. A small-diameter vascular graft immobilized peptides for capturing endothelial colony-forming cells. Front Bioeng Biotechnol 2023; 11:1154986. [PMID: 37101749 PMCID: PMC10123284 DOI: 10.3389/fbioe.2023.1154986] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2023] [Accepted: 03/23/2023] [Indexed: 04/28/2023] Open
Abstract
Combining synthetic polymers and biomacromolecules prevents the occurrence of thrombogenicity and intimal hyperplasia in small-diameter vascular grafts (SDVGs). In the present study, an electrospinning poly (L)-lactic acid (PLLA) bilayered scaffold is developed to prevent thrombosis after implantation by promoting the capture and differentiation of endothelial colony-forming cells (ECFCs). The scaffold consists of an outer PLLA scaffold and an inner porous PLLA biomimetic membrane combined with heparin (Hep), peptide Gly-Gly-Gly-Arg-Glu-Asp-Val (GGG-REDV), and vascular endothelial growth factor (VEGF). Attenuated total reflection Fourier transform infrared (ATR-FTIR) spectroscopy, X-ray photoelectron spectroscopy (XPS), and contact angle goniometry were performed to determine successful synthesis. The tensile strength of the outer layer was obtained using the recorded stress/strain curves, and hemocompatibility was evaluated using the blood clotting test. The proliferation, function, and differentiation properties of ECFCs were measured on various surfaces. Scanning electronic microscopy (SEM) was used to observe the morphology of ECFCs on the surface. The outer layer of scaffolds exhibited a similar strain and stress performance as the human saphenous vein via the tensile experiment. The contact angle decreased continuously until it reached 56° after REDV/VEGF modification, and SEM images of platelet adhesion showed a better hemocompatibility surface after modification. The ECFCs were captured using the REDV + VEGF + surface successfully under flow conditions. The expression of mature ECs was constantly increased with the culture of ECFCs on REDV + VEGF + surfaces. SEM images showed that the ECFCs captured by the REDV + VEGF + surface formed capillary-like structures after 4 weeks of culture. The SDVGs modified by REDV combined with VEGF promoted ECFC capture and rapid differentiation into ECs, forming capillary-like structures in vitro. The bilayered SDVGs could be used as vascular devices that achieved a high patency rate and rapid re-endothelialization.
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Affiliation(s)
- Yaqi Tang
- Heart Center, Qingdao Women and Children’s Hospital, Qingdao University, Qingdao, China
| | - Lu Yin
- College of Material, Chemistry and Chemical Engineering, Hangzhou Normal University, Hangzhou, China
| | - Shuai Gao
- Heart Center, Qingdao Women and Children’s Hospital, Qingdao University, Qingdao, China
| | - Xiaojing Long
- State Key Laboratory of Bio-fibers and Eco-textiles, Qingdao University, Qingdao, China
| | - Zhanhui Du
- Heart Center, Qingdao Women and Children’s Hospital, Qingdao University, Qingdao, China
| | - Yingchao Zhou
- Heart Center, Qingdao Women and Children’s Hospital, Qingdao University, Qingdao, China
| | - Shuiyan Zhao
- Heart Center, Qingdao Women and Children’s Hospital, Qingdao University, Qingdao, China
| | - Yue Cao
- Heart Center, Qingdao Women and Children’s Hospital, Qingdao University, Qingdao, China
| | - Silin Pan
- Heart Center, Qingdao Women and Children’s Hospital, Qingdao University, Qingdao, China
- *Correspondence: Silin Pan,
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Zhao J, Feng Y. Surface Engineering of Cardiovascular Devices for Improved Hemocompatibility and Rapid Endothelialization. Adv Healthc Mater 2020; 9:e2000920. [PMID: 32833323 DOI: 10.1002/adhm.202000920] [Citation(s) in RCA: 42] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2020] [Revised: 07/18/2020] [Indexed: 12/13/2022]
Abstract
Cardiovascular devices have been widely applied in the clinical treatment of cardiovascular diseases. However, poor hemocompatibility and slow endothelialization on their surface still exist. Numerous surface engineering strategies have mainly sought to modify the device surface through physical, chemical, and biological approaches to improve surface hemocompatibility and endothelialization. The alteration of physical characteristics and pattern topographies brings some hopeful outcomes and plays a notable role in this respect. The chemical and biological approaches can provide potential signs of success in the endothelialization of vascular device surfaces. They usually involve therapeutic drugs, specific peptides, adhesive proteins, antibodies, growth factors and nitric oxide (NO) donors. The gene engineering can enhance the proliferation, growth, and migration of vascular cells, thus boosting the endothelialization. In this review, the surface engineering strategies are highlighted and summarized to improve hemocompatibility and rapid endothelialization on the cardiovascular devices. The potential outlook is also briefly discussed to help guide endothelialization strategies and inspire further innovations. It is hoped that this review can assist with the surface engineering of cardiovascular devices and promote future advancements in this emerging research field.
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Affiliation(s)
- Jing Zhao
- School of Chemical Engineering and Technology Tianjin University Yaguan Road 135 Tianjin 300350 P. R. China
| | - Yakai Feng
- School of Chemical Engineering and Technology Tianjin University Yaguan Road 135 Tianjin 300350 P. R. China
- Collaborative Innovation Center of Chemical Science and Chemical Engineering (Tianjin) Yaguan Road 135 Tianjin 300350 P. R. China
- Key Laboratory of Systems Bioengineering (Ministry of Education) Tianjin University Tianjin 300072 P. R. China
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Co-immobilization of ACH 11 antithrombotic peptide and CAG cell-adhesive peptide onto vascular grafts for improved hemocompatibility and endothelialization. Acta Biomater 2019; 97:344-359. [PMID: 31377424 DOI: 10.1016/j.actbio.2019.07.057] [Citation(s) in RCA: 40] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2019] [Revised: 07/28/2019] [Accepted: 07/30/2019] [Indexed: 11/20/2022]
Abstract
Surface modification by conjugating biomolecules has been widely proved to enhance biocompatibility of small-caliber artificial vascular grafts. In this study, we aimed at developing a multifunctional vascular graft that provides not only good hemocompatibility but also in situ rapid endothelialization. Herein, a vascular graft (inner diameter ∼2 mm) was fabricated by electrospinning with poly(lactic acid-co-caprolactone) and gelatin, and then biofunctionalized with antithrombotic peptide with sequence LTFPRIVFVLG (ACH11) and cell adhesion peptide with sequence CAG through adhesive poly(dopamine) coating. We developed this graft with the synergistic properties of low thrombogenicity and rapid endothelialization. The successful grafting of both CAG and ACH11 peptides was confirmed by Fourier transform infrared spectroscopy and X-ray photoelectron spectroscopy. The surface micromorphology of the modified surfaces was observed by field emission scanning electron microscopy. Our results demonstrated that the multifunctional surface suppressed the denaturation of absorbed fibrinogen, hindered coagulation factor Xa activation, and inhibited platelet adhesion and aggregation. Importantly, this modified surface could selectively enhance endothelial cells adhesion, proliferation and release of nitric oxide. Upon in vivo implantation of 6 weeks, the multifunctional vascular graft showed improved patency and superior vascular endothelialization. Overall, the results effectively demonstrated that the co-immobilization of ACH11 and CAG provided a promising method for the improvement of hemocompatibility and endothelialization of vascular grafts. STATEMENT OF SIGNIFICANCE: Electrospun small-caliber vascular grafts are increasingly used to treat cardiovascular diseases. Despite their success related to their good biodegradation and mechanical strength, they have some drawbacks, such as low hemocompatibility and endothelialization. The single-function ligands are insufficient to modify surface with both good hemocompatibility and rapid endothelialization simultaneously. Therefore, we functionalized electrospun vascular graft by novel antithrombotic peptide and cell-adhesive peptide to construct superior anticoagulation and ECs-selective adhesion surface in present study. The multifunctional vascular grafts benefit for high long-term patency and rapid endothelialization.
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Bai L, Zhao J, Li Q, Guo J, Ren X, Xia S, Zhang W, Feng Y. Biofunctionalized Electrospun PCL‐PIBMD/SF Vascular Grafts with PEG and Cell‐Adhesive Peptides for Endothelialization. Macromol Biosci 2018; 19:e1800386. [DOI: 10.1002/mabi.201800386] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2018] [Revised: 11/08/2018] [Indexed: 11/06/2022]
Affiliation(s)
- Lingchuang Bai
- School of Chemical Engineering and TechnologyTianjin University Yaguan Road 135 Tianjin 300350 China
| | - Jing Zhao
- School of Chemical Engineering and TechnologyTianjin University Yaguan Road 135 Tianjin 300350 China
| | - Qian Li
- School of Chemical Engineering and TechnologyTianjin University Yaguan Road 135 Tianjin 300350 China
| | - Jintang Guo
- School of Chemical Engineering and TechnologyTianjin University Yaguan Road 135 Tianjin 300350 China
- Collaborative Innovation Center of Chemical Science and Chemical Engineering (Tianjin) Tianjin 300350 China
| | - Xiangkui Ren
- School of Chemical Engineering and TechnologyTianjin University Yaguan Road 135 Tianjin 300350 China
- Collaborative Innovation Center of Chemical Science and Chemical Engineering (Tianjin) Tianjin 300350 China
- Key Laboratory of Systems Bioengineering (Ministry of Education)Tianjin University Tianjin 300072 China
| | - Shihai Xia
- Department of Hepatopancreatobiliary and Splenic MedicineAffiliated HospitalLogistics University of People's Armed Police Force 220 Chenglin Road Tianjin 300162 China
| | - Wencheng Zhang
- Department of Physiology and PathophysiologyLogistics University of Chinese People's Armed Police Force Tianjin 300309 China
| | - Yakai Feng
- School of Chemical Engineering and TechnologyTianjin University Yaguan Road 135 Tianjin 300350 China
- Collaborative Innovation Center of Chemical Science and Chemical Engineering (Tianjin) Tianjin 300350 China
- Key Laboratory of Systems Bioengineering (Ministry of Education)Tianjin University Tianjin 300072 China
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Li Q, Hao X, Zaidi SSA, Guo J, Ren X, Shi C, Zhang W, Feng Y. Oligohistidine and targeting peptide functionalized TAT-NLS for enhancing cellular uptake and promoting angiogenesis in vivo. J Nanobiotechnology 2018; 16:29. [PMID: 29580233 PMCID: PMC5870920 DOI: 10.1186/s12951-018-0358-x] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2017] [Accepted: 03/19/2018] [Indexed: 01/08/2023] Open
Abstract
BACKGROUND Gene therapy has been developed and used in medical treatment for many years, especially for the enhancement of endothelialization and angiogenesis. But slow endosomal escape rate is still one of the major barriers to successful gene delivery. In order to evaluate whether introducing oligohistidine (Hn) sequence into gene carriers can promote endosomal escape and gene transfection or not, we designed and synthesized Arg-Glu-Asp-Val (REDV) peptide functionalized TAT-NLS-Hn (TAT: typical cell-penetrating peptide, NLS: nuclear localization signals, Hn: oligohistidine sequence, n: 4, 8 and 12) peptides with different Hn sequence lengths. pEGFP-ZNF580 (pZNF580) was condensed by these peptides to form gene complexes, which were used to transfect human umbilical vein endothelial cells (HUVECs). RESULTS MTT assay showed that the gene complexes exhibited low cytotoxicity for HUVECs. The results of cellular uptake and co-localization ratio demonstrated that the gene complexes prepared from TAT-NLS-Hn with long Hn sequence (n = 12) benefited for high internalization efficiency of pZNF580. In addition, the results of western blot analysis and PCR assay of REDV-TAT-NLS-H12/pZNF580 complexes showed significantly enhanced gene expression at protein and mRNA level. Wound healing assay and transwell migration assay also confirmed the improved proliferation and migration ability of the transfected HUVECs by these complexes. Furthermore, the in vitro and in vivo angiogenesis assay illustrated that these complexes could promote the tube formation ability of HUVECs. CONCLUSION The above results indicated that the delivery efficiency of pZNF580 and its expression could be enhanced by introducing Hn sequence into gene carriers. The Hn sequence in REDV-TAT-NLS-Hn is beneficial for high gene transfection. These REDV and Hn functionalized TAT-NLS peptides are promising gene carriers in gene therapy.
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Affiliation(s)
- Qian Li
- School of Chemical Engineering and Technology, Tianjin University, Tianjin, 300350, China
| | - Xuefang Hao
- School of Chemical Engineering and Technology, Tianjin University, Tianjin, 300350, China
| | - Syed Saqib Ali Zaidi
- School of Chemical Engineering and Technology, Tianjin University, Tianjin, 300350, China
| | - Jintang Guo
- School of Chemical Engineering and Technology, Tianjin University, Tianjin, 300350, China.,Collaborative Innovation Center of Chemical Science and Chemical Engineering (Tianjin), Tianjin, 300350, China
| | - Xiangkui Ren
- School of Chemical Engineering and Technology, Tianjin University, Tianjin, 300350, China.,Collaborative Innovation Center of Chemical Science and Chemical Engineering (Tianjin), Tianjin, 300350, China
| | - Changcan Shi
- School of Ophthalmology, & Optometry, Eye Hospital, School of Biomedical Engineering, Wenzhou Medical University, Wenzhou, 325011, Zhejiang, China.,Wenzhou Institute of Biomaterials and Engineering, CNITECH, CAS, Wenzhou, 325011, Zhejiang, China
| | - Wencheng Zhang
- Department of Physiology and Pathophysiology, Logistics University of Chinese People's Armed Police Force, Tianjin, 300309, China
| | - Yakai Feng
- School of Chemical Engineering and Technology, Tianjin University, Tianjin, 300350, China. .,Collaborative Innovation Center of Chemical Science and Chemical Engineering (Tianjin), Tianjin, 300350, China. .,Key Laboratory of Systems Bioengineering (Ministry of Education), Tianjin University, Tianjin, 300072, China.
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Gao J, Jiang L, Liang Q, Shi J, Hou D, Tang D, Chen S, Kong D, Wang S. The grafts modified by heparinization and catalytic nitric oxide generation used for vascular implantation in rats. Regen Biomater 2018; 5:105-114. [PMID: 29644092 PMCID: PMC5888227 DOI: 10.1093/rb/rby003] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2017] [Revised: 02/05/2018] [Accepted: 02/09/2018] [Indexed: 01/03/2023] Open
Abstract
Small-diameter (<6 mm) vascular grafts are increasingly needed in peripheral vascular surgery but have few successes because of acute thrombosis, incomplete endothelialization and intimal hyperplasia after implantation. This study used electrospun poly(ε-caprolactone) as the matrix material. Heparin and selenium-containing catalyst-organoselenium modified polyethyleneimine were introduced through layer-by-layer assembly in order to build a vascular graft with in situ nitric oxide (NO) generation. The aim of this study was to explore the application of the graft with improved histocompatibility and biological function for vascular implantation in rats. After implantation in rats, compared to poly(ε-caprolactone), the modified grafts could promote the adhesion and proliferation of endothelial cells, and inhibit the adhesion of smooth muscle cells. The modified grafts remarkably promoted endothelialization, inhibited intimal hyperplasia and increased the ratio of alternatively activated macrophages (M2) to classical activated macrophages (M1). This work constructed a vascular graft with heparinization and catalytic NO generation for improving the vascularization, and accelerating the tissue regeneration by regulating the inflammatory response. The present study indicates that it is a promising method for regulating response and tissue regeneration of small diameter vascular grafts by a novel approach of combining heparinization and catalytic NO generation.
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Affiliation(s)
- Jingchen Gao
- State Key Laboratory of Medicinal Chemical Biology, Key Laboratory of Bioactive Materials for Ministry of Education, College of Life Sciences, Nankai University, Tianjin 300071, China
| | - Li Jiang
- State Key Laboratory of Medicinal Chemical Biology, Key Laboratory of Bioactive Materials for Ministry of Education, College of Life Sciences, Nankai University, Tianjin 300071, China
| | - Qinge Liang
- State Key Laboratory of Medicinal Chemical Biology, Key Laboratory of Bioactive Materials for Ministry of Education, College of Life Sciences, Nankai University, Tianjin 300071, China
| | - Jie Shi
- State Key Laboratory of Medicinal Chemical Biology, Key Laboratory of Bioactive Materials for Ministry of Education, College of Life Sciences, Nankai University, Tianjin 300071, China
| | - Ding Hou
- State Key Laboratory of Medicinal Chemical Biology, Key Laboratory of Bioactive Materials for Ministry of Education, College of Life Sciences, Nankai University, Tianjin 300071, China
| | - Di Tang
- State Key Laboratory of Medicinal Chemical Biology, Key Laboratory of Bioactive Materials for Ministry of Education, College of Life Sciences, Nankai University, Tianjin 300071, China
| | - Siyuan Chen
- State Key Laboratory of Medicinal Chemical Biology, Key Laboratory of Bioactive Materials for Ministry of Education, College of Life Sciences, Nankai University, Tianjin 300071, China
| | - Deling Kong
- State Key Laboratory of Medicinal Chemical Biology, Key Laboratory of Bioactive Materials for Ministry of Education, College of Life Sciences, Nankai University, Tianjin 300071, China
| | - Shufang Wang
- State Key Laboratory of Medicinal Chemical Biology, Key Laboratory of Bioactive Materials for Ministry of Education, College of Life Sciences, Nankai University, Tianjin 300071, China
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He Y, Mei L, Jin Y, Li XP, Jin C. Overexpression of Hepatocyte Growth Factor mRNA Induced by Gene Transfer Attenuates Neointimal Hyperplasia After Balloon Injury. Hum Gene Ther 2018; 29:816-827. [PMID: 29382231 DOI: 10.1089/hum.2017.173] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Hepatic growth factor (HGF) has been widely used in studies on arterial remodeling after injury, and results turn out to be inconsistent. The changes of endogenous HGF expression after injury also remain controversial. This study clarified the role of exogenous human HGF (hHGF) gene transfer in neointimal hyperplasia and investigated the associated alterations of endogenous HGF and c-Met expressions under endothelial denudation with or without hHGF gene transfer using a balloon-injured rabbit aorta model. Sixty-one rabbits were randomly divided into normal controls, endothelial injury, endothelial injury with hHGF, or the control vector gene transfer groups. On weeks 1, 2, 4, and 8 after injury, neointimal hyperplasia and endothelialization were evaluated by the ratio of neointimal area to medial area (N/M ratio), CD31-positive staining, α-smooth muscle actin, and endothelial nitric oxide synthase expressions using histological analysis, immunohistochemistry staining, or real-time quantitative reverse transcriptase polymerase chain reaction. Endogenous rabbit HGF (rHGF) and c-Met expressions were detected with immunohistochemistry staining and quantitative reverse transcriptase polymerase chain reaction. It was found that expressions of endogeneous rHGF and c-Met in endothelial injury upregulated with peak levels on week 2 or week 4 after injury (p < 0.01). On week 1 after hHGF transfer, neointimal hyperplasia was significantly inhibited (p < 0.001), with decreased α-smooth muscle actin expression (p < 0.05) and improved endothelial cells regeneration and function (p < 0.01). More remarkable overexpression of endogenous rHGF and c-Met mRNAs were detected, and lowered positive staining of rHGF and c-Met was shown in the neointima (p < 0.05). These results demonstrated hHGF gene transfer induced further overexpression of endogenous rHGF and c-Met mRNAs but lowered immunoreactivities of rHGF and c-Met in the neointima, thus leading to significant attenuation of neointimal hyperplasia.
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Affiliation(s)
- Yu He
- 1 Department of Ultrasound, China-Japan Union Hospital of Jilin University , Changchun, China
| | - Li Mei
- 2 Department of Ultrasound, the First Hospital of Jilin University , Changchun, China
| | - Ying Jin
- 3 Department of Surgery, the First Hospital of Jilin University , Changchun, China
| | - Xiao-Ping Li
- 1 Department of Ultrasound, China-Japan Union Hospital of Jilin University , Changchun, China
| | - Chunxiang Jin
- 1 Department of Ultrasound, China-Japan Union Hospital of Jilin University , Changchun, China
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Lekshmi KM, Che HL, Cho CS, Park IK. Drug- and Gene-eluting Stents for Preventing Coronary Restenosis. Chonnam Med J 2017; 53:14-27. [PMID: 28184335 PMCID: PMC5299126 DOI: 10.4068/cmj.2017.53.1.14] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2016] [Revised: 08/17/2016] [Accepted: 08/18/2016] [Indexed: 12/19/2022] Open
Abstract
Coronary artery disease (CAD) has been reported to be a major cause of death worldwide. Current treatment methods include atherectomy, coronary angioplasty (as a percutaneous coronary intervention), and coronary artery bypass. Among them, the insertion of stents into the coronary artery is one of the commonly used methods for CAD, although the formation of in-stent restenosis (ISR) is a major drawback, demanding improvement in stent technology. Stents can be improved using the delivery of DNA, siRNA, and miRNA rather than anti-inflammatory/anti-thrombotic drugs. In particular, genes that could interfere with the development of plaque around infected regions are conjugated on the stent surface to inhibit neointimal formation. Despite their potential benefits, it is necessary to explore the various properties of gene-eluting stents. Furthermore, multifunctional electronic stents that can be used as a biosensor and deliver drug- or gene-based on physiological condition will be a very promising way to the successful treatment of ISR. In this review, we have discussed the molecular mechanism of restenosis, the use of drug- and gene-eluting stents, and the possible roles that these stents have in the prevention and treatment of coronary restenosis. Further, we have explained how multifunctional electronic stents could be used as a biosensor and deliver drugs based on physiological conditions.
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Affiliation(s)
- Kamali Manickavasagam Lekshmi
- Department of Biomedical Sciences and BK21 PLUS Centre for Creative Biomedical Scientists, Chonnam National University Medical School, Gwangju, Korea
| | - Hui-Lian Che
- Department of Biomedical Sciences and BK21 PLUS Centre for Creative Biomedical Scientists, Chonnam National University Medical School, Gwangju, Korea.; Heart Research Centre, Chonnam National University Hospital, Gwangju, Korea
| | - Chong-Su Cho
- Department of Agricultural Biotechnology and Research Institute for Agriculture and Life Sciences, Seoul National University, Seoul, Korea
| | - In-Kyu Park
- Department of Biomedical Sciences and BK21 PLUS Centre for Creative Biomedical Scientists, Chonnam National University Medical School, Gwangju, Korea
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Han X, Chen Q, Lu H, Ma J, Gao H. Probe Intracellular Trafficking of a Polymeric DNA Delivery Vehicle by Functionalization with an Aggregation-Induced Emissive Tetraphenylethene Derivative. ACS APPLIED MATERIALS & INTERFACES 2015; 7:28494-28501. [PMID: 26634294 DOI: 10.1021/acsami.5b09639] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Characteristic aggregation-induced quenching of π-fluorophores imposed substantial hindrance to their utilization in nanomedicine for insight into microscopic intracellular trafficking of therapeutic payload. To address this obstacle, we attempted to introduce a novel aggregation-induced emission (AIE) fluorophore into the cationic polymer, which was further used for formulation of a gene delivery carrier. Note that the selective restriction of the intramolecular rotation of the AIE fluorophore through its covalent bond to the polymer conduced to immense AIE. Furthermore, DNA payload labeled with the appropriate fluorophore as the Förster resonance energy transfer (FRET) acceptor verified a facile strategy to trace intracellular DNA releasing activity relying on the distance limitation requested by FRET (AIE fluorophore as FRET donor). Moreover, the hydrophobic nature of the AIE fluorophore appeared to promote colloidal stability of the constructed formulation. Together with other chemistry functionalization strategies (including endosome escape), the ultimate formulation exerted dramatic gene transfection efficiency. Hence, this report manifested a first nanomedicine platform combining AIE and FRET for microscopic insight into DNA intracellular trafficking activity.
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Affiliation(s)
- Xiongqi Han
- School of Chemistry and Chemical Engineering, Tianjin Key Laboratory of Organic Solar Cells and Photochemical Conversion, Tianjin University of Technology , 300384 Tianjin, China
| | - Qixian Chen
- Department of Chemistry, Massachusetts Institute of Technology , Cambridge, Massachusetts 02139, United States
| | - Hongguang Lu
- School of Chemistry and Chemical Engineering, Tianjin Key Laboratory of Organic Solar Cells and Photochemical Conversion, Tianjin University of Technology , 300384 Tianjin, China
| | - Jianbiao Ma
- School of Chemistry and Chemical Engineering, Tianjin Key Laboratory of Organic Solar Cells and Photochemical Conversion, Tianjin University of Technology , 300384 Tianjin, China
| | - Hui Gao
- School of Chemistry and Chemical Engineering, Tianjin Key Laboratory of Organic Solar Cells and Photochemical Conversion, Tianjin University of Technology , 300384 Tianjin, China
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Wei Y, Zhang J, Li H, Zhang L, Bi H. Multifunctional copolymer coating of polyethylene glycol, glycidyl methacrylate, and REDV to enhance the selectivity of endothelial cells. JOURNAL OF BIOMATERIALS SCIENCE-POLYMER EDITION 2015; 26:1357-71. [DOI: 10.1080/09205063.2015.1095024] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Chang H, Zhang H, Hu M, Chen XC, Ren KF, Wang JL, Ji J. Surface modulation of complex stiffness via layer-by-layer assembly as a facile strategy for selective cell adhesion. Biomater Sci 2015. [DOI: 10.1039/c4bm00321g] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
A facile approach to achieve selective cell adhesion by modulating surface complex stiffness based on layer-by-layer assembly is reported.
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Affiliation(s)
- Hao Chang
- Department of Polymer Science and Engineering Key Laboratory of Macromolecule Synthesis and Functionalization of the Ministry of Education
- Zhejiang University
- Hangzhou
- P.R. China
| | - He Zhang
- Department of Polymer Science and Engineering Key Laboratory of Macromolecule Synthesis and Functionalization of the Ministry of Education
- Zhejiang University
- Hangzhou
- P.R. China
| | - Mi Hu
- Department of Polymer Science and Engineering Key Laboratory of Macromolecule Synthesis and Functionalization of the Ministry of Education
- Zhejiang University
- Hangzhou
- P.R. China
| | - Xia-chao Chen
- Department of Polymer Science and Engineering Key Laboratory of Macromolecule Synthesis and Functionalization of the Ministry of Education
- Zhejiang University
- Hangzhou
- P.R. China
| | - Ke-feng Ren
- Department of Polymer Science and Engineering Key Laboratory of Macromolecule Synthesis and Functionalization of the Ministry of Education
- Zhejiang University
- Hangzhou
- P.R. China
| | - Jin-lei Wang
- Department of Polymer Science and Engineering Key Laboratory of Macromolecule Synthesis and Functionalization of the Ministry of Education
- Zhejiang University
- Hangzhou
- P.R. China
| | - Jian Ji
- Department of Polymer Science and Engineering Key Laboratory of Macromolecule Synthesis and Functionalization of the Ministry of Education
- Zhejiang University
- Hangzhou
- P.R. China
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12
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Drug delivery in aortic valve tissue engineering. J Control Release 2014; 196:307-23. [DOI: 10.1016/j.jconrel.2014.10.009] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2014] [Revised: 10/07/2014] [Accepted: 10/09/2014] [Indexed: 01/08/2023]
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13
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Zhang J, Wang Z, Lin W, Chen S. Gene transfection in complex media using PCBMAEE-PCBMA copolymer with both hydrolytic and zwitterionic blocks. Biomaterials 2014; 35:7909-18. [DOI: 10.1016/j.biomaterials.2014.05.066] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2014] [Accepted: 05/21/2014] [Indexed: 11/25/2022]
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14
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Yang Y, Qi P, Wen F, Li X, Xia Q, Maitz MF, Yang Z, Shen R, Tu Q, Huang N. Mussel-inspired one-step adherent coating rich in amine groups for covalent immobilization of heparin: hemocompatibility, growth behaviors of vascular cells, and tissue response. ACS APPLIED MATERIALS & INTERFACES 2014; 6:14608-20. [PMID: 25105346 DOI: 10.1021/am503925r] [Citation(s) in RCA: 89] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/12/2023]
Abstract
Heparin, an important polysaccharide, has been widely used for coatings of cardiovascular devices because of its multiple biological functions including anticoagulation and inhibition of intimal hyperplasia. In this study, surface heparinization of a commonly used 316L stainless steel (SS) was explored for preparation of a multifunctional vascular stent. Dip-coating of the stents in an aqueous solution of dopamine and hexamethylendiamine (HD) (PDAM/HD) was presented as a facile method to form an adhesive coating rich in primary amine groups, which was used for covalent heparin immobilization via active ester chemistry. A heparin grafting density of about 900 ng/cm(2) was achieved with this method. The retained bioactivity of the immobilized heparin was confirmed by a remarkable prolongation of the activated partial thromboplastin time (APTT) for about 15 s, suppression of platelet adhesion, and prevention of the denaturation of adsorbed fibrinogen. The Hep-PDAM/HD also presented a favorable microenvironment for selectively enhancing endothelial cell (EC) adhesion, proliferation, migration and release of nitric oxide (NO), and at the same time inhibiting smooth muscle cell (SMC) adhesion and proliferation. Upon subcutaneous implantation, the Hep-PDAM/HD exhibited mitigated tissue response, with thinner fibrous capsule and less granulation formation compared to the control 316L SS. This number of unique functions qualifies the heparinized coating as an attractive alternative for the design of a new generation of stents.
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Affiliation(s)
- Ying Yang
- Key Laboratory of Advanced Technology for Materials of Education Ministry, ‡The Institute of Biomaterials and Surface Engineering, School of Materials Science and Engineering, and #Laboratory of Biosensing and MicroMechatronics, Southwest Jiaotong University , Chengdu 610031, China
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Chang H, Ren KF, Zhang H, Wang JL, Wang BL, Ji J. The (PrS/HGF-pDNA) multilayer films for gene-eluting stent coating: Gene-protecting, anticoagulation, antibacterial properties, and in vivo antirestenosis evaluation. J Biomed Mater Res B Appl Biomater 2014; 103:430-9. [PMID: 24909849 DOI: 10.1002/jbm.b.33224] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2014] [Revised: 05/12/2014] [Accepted: 05/22/2014] [Indexed: 01/12/2023]
Abstract
Vascular gene-eluting stents (GES) is a promising strategy for treatment of cardiovascular disease. Very recently, we have proved that the (protamine sulfate/plasmid DNA encoding hepatocyte growth factor) (PrS/HGF-pDNA) multilayer can serve as a powerful tool for enhancing competitiveness of endothelial cell over smooth muscle cell, which opens perspectives for the regulation of intercellular competitiveness in the field of interventional therapy. However, before the gene multilayer films could be used in vascular stents for real clinical application, the preservation of gene bioactivity during the industrial sterilization and the hemocompatibility of film should be taken into account. Actually, both are long been ignored issues in the field of gene coating for GES. In this study, we demonstrate that the (PrS/HGF-pDNA) multilayer film exhibits the good gene-protecting abilities, which is confirmed by using the industrial sterilizations (gamma irradiation and ethylene oxide) and a routine storage condition (dry state at 4°C for 30 days). Furthermore, hemocompatible measurements (such as platelet adhesion and whole blood coagulation) and antibacterial assays (bacteria adhesion and growth inhibition) indicate the good anticoagulation and antibacterial properties of the (PrS/HGF-pDNA) multilayer film. The in vivo preliminary data of angiography and histological analysis suggest that the (PrS/HGF-pDNA) multilayer coated stent can reduce the in-stent restenosis. This work reveals that the (PrS/HGF-pDNA) multilayer film could be a promising candidate as coating for GES, which is of great potential in future clinic application.
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Affiliation(s)
- Hao Chang
- Department of Polymer Science and Engineering, MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Zhejiang University, Hangzhou, 310027, China
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Ryu K, Kim TI. Therapeutic gene delivery using bioreducible polymers. Arch Pharm Res 2013; 37:31-42. [DOI: 10.1007/s12272-013-0275-3] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2013] [Accepted: 10/22/2013] [Indexed: 12/14/2022]
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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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Surface engineering of cardiovascular stent with endothelial cell selectivity for in vivo re-endothelialisation. Biomaterials 2013; 34:2588-99. [DOI: 10.1016/j.biomaterials.2012.12.036] [Citation(s) in RCA: 157] [Impact Index Per Article: 14.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2012] [Accepted: 12/29/2012] [Indexed: 01/26/2023]
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Surface-mediated functional gene delivery: An effective strategy for enhancing competitiveness of endothelial cells over smooth muscle cells. Biomaterials 2013; 34:3345-54. [DOI: 10.1016/j.biomaterials.2013.01.065] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2012] [Accepted: 01/15/2013] [Indexed: 12/18/2022]
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20
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Transient embolization with microspheres of polyhydroxyalkanoate renders efficient adenoviral transduction of pancreatic capillary in vivo. J Gene Med 2012; 14:530-9. [DOI: 10.1002/jgm.2650] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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Zhang G, Lan X, Yen TC, Chen Q, Pei Z, Qin C, Zhang Y. Therapeutic gene expression in transduced mesenchymal stem cells can be monitored using a reporter gene. Nucl Med Biol 2012; 39:1243-50. [PMID: 22796395 DOI: 10.1016/j.nucmedbio.2012.06.010] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2011] [Revised: 05/23/2012] [Accepted: 06/12/2012] [Indexed: 12/29/2022]
Abstract
AIM We constructed a recombinant adenovirus construct Ad5-sr39tk-IRES-VEGF(165) (Ad5-SIV) that contained a mutant herpes viral thymidine kinase reporter gene (HSV1-sr39tk) and the human vascular endothelial growth factor 165 (VEGF(165)) gene for noninvasive imaging of gene expression. The recombinant adenovirus Ad5-SIV was transfected into rat bone marrow-derived mesenchymal stem cells (MSCs), and we measured the expression of HSV1-sr39tk and VEGF(165) to evaluate the feasibility of monitoring VEGF(165) expression using reporter gene expression. METHODS The MSCs were infected with Ad5-SIV at various levels of infection (MOI), ranging from 0 to 100 infectious units per cell (IU/cell). The mRNA and protein expression levels of the reporter and therapeutic genes were determined using real-time RT-PCR, Western blot, ELISA and immunofluorescence. The HSV1-sr39tk expression in the MSCs was also detected in vitro using a cellular uptake study of the reporter probe (131)I-FIAU. Gene expression was also evaluated in vivo by micro-Positron Emission Tomography/Computed Tomography (micro-PET/CT) imaging 1day after injecting Ad5-SIV-tranfected MSCs into the left foreleg of the rat. The right foreleg was injected with non-transfected MSCs and served as an internal control. RESULTS The real-time RT-PCR results demonstrated a good correlation between the expression levels of HSV1-sr39tk mRNA and VEGF(165) mRNA (R(2)=0.93, P<0.05). The cellular uptake of (131)I-FIAU increased with increasing viral titers (R(2)=0.89; P<0.05), and in the group that received an MOI of 100, a peak value of 30.15%±1.11% was found at 3 hours of incubation. The uptake rates increased rapidly between 30 and 150 minutes and reached a plateau after 150 minutes. The uptake rates of (131)I-FIAU by the Ad5-SIV-infected cells were significantly higher than by the Ad5-EGFP-infected cells for all time points (t=18.43-54.83, P<0.05). Moreover, the rate of VEGF(165) protein secretion was highly correlated with the uptake rate of (131)I-FIAU (R(2)=0.84, P<0.05). The radioactivity on the micro-PET/CT images was significantly higher in the left foreleg (which received the transfected MSCs) compared with the control foreleg. CONCLUSIONS These results suggest that radionuclide reporter gene imaging may be used to monitor gene expression in vivo.
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Affiliation(s)
- Guopeng Zhang
- Department of Nuclear Medicine, Union Hospital, Tongji Medical College of Huazhong University of Science and Technology, Hubei Province Key Laboratory of Molecular Imaging, Wuhan, 430022, China
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Ji Y, Wei Y, Liu X, Wang J, Ren K, Ji J. Zwitterionic polycarboxybetaine coating functionalized with REDV peptide to improve selectivity for endothelial cells. J Biomed Mater Res A 2012; 100:1387-97. [DOI: 10.1002/jbm.a.34077] [Citation(s) in RCA: 75] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2011] [Revised: 12/15/2011] [Accepted: 01/06/2012] [Indexed: 12/18/2022]
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Allen R, Brewster LP. Gender differences at the cellular level. J Surg Res 2012; 180:45-6. [PMID: 22316676 DOI: 10.1016/j.jss.2011.11.1023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2011] [Revised: 11/17/2011] [Accepted: 11/22/2011] [Indexed: 12/24/2022]
Affiliation(s)
- Robert Allen
- Department of Surgery, Emory University Hospital, 676 North Parkwood Road, Decatur, GA, USA
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24
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Nonviral delivery of genetic medicine for therapeutic angiogenesis. Adv Drug Deliv Rev 2012; 64:40-52. [PMID: 21971337 DOI: 10.1016/j.addr.2011.09.005] [Citation(s) in RCA: 54] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2011] [Revised: 06/29/2011] [Accepted: 09/18/2011] [Indexed: 01/08/2023]
Abstract
Genetic medicines that induce angiogenesis represent a promising strategy for the treatment of ischemic diseases. Many types of nonviral delivery systems have been tested as therapeutic angiogenesis agents. However, their delivery efficiency, and consequently therapeutic efficacy, remains to be further improved, as few of these technologies are being used in clinical applications. This article reviews the diverse nonviral gene delivery approaches that have been applied to the field of therapeutic angiogenesis, including plasmids, cationic polymers/lipids, scaffolds, and stem cells. This article also reviews clinical trials employing nonviral gene therapy and discusses the limitations of current technologies. Finally, this article proposes a future strategy to efficiently develop delivery vehicles that might be feasible for clinically relevant nonviral gene therapy, such as high-throughput screening of combinatorial libraries of biomaterials.
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Indolfi L, Causa F, Giovino C, Ungaro F, Quaglia F, Netti PA. Microsphere-integrated drug-eluting stents: PLGA microsphere integration in hydrogel coating for local and prolonged delivery of hydrophilic antirestenosis agents. J Biomed Mater Res A 2011; 97:201-11. [DOI: 10.1002/jbm.a.33039] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2010] [Revised: 11/15/2010] [Accepted: 12/03/2010] [Indexed: 11/11/2022]
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Wang X, Sun J, Ji J. pH modulated layer-by-layer assembly as a new approach to tunable formulating of DNA within multilayer coating. REACT FUNCT POLYM 2011. [DOI: 10.1016/j.reactfunctpolym.2010.09.007] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Wei Y, Ji Y, Xiao L, Lin Q, Ji J. Different complex surfaces of polyethyleneglycol (PEG) and REDV ligand to enhance the endothelial cells selectivity over smooth muscle cells. Colloids Surf B Biointerfaces 2011; 84:369-78. [PMID: 21333506 DOI: 10.1016/j.colsurfb.2011.01.028] [Citation(s) in RCA: 73] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2010] [Revised: 11/17/2010] [Accepted: 01/19/2011] [Indexed: 11/19/2022]
Abstract
Arg-Glu-Asp-Val (REDV) peptide with endothelial cells (ECs) selectivity was immobilized onto PEG based polymeric coating via the active p-nitrophenyloxycarbonyl group. The adhesion and proliferation of human umbilical vein endothelial cells (HUVECs) and human aortic smooth muscle cells (HASMCs) onto surface modified either by REDV end-tethered polyethylene glycol (PEG) or by the complex of free PEG and REDV were investigated to understand the synergic action of nonspecific resistance of PEG and specific recognitions of REDV. Cell culture results indicated that the surfaces end tethered by REDV peptide via PEG "spacer" (n=1, 6, 10) exhibited slight EC selectivity and showed small difference between different lengths of PEG chain. Both separate-culture and co-culture of HUVECs and HASMCs indicated that the introducing of free PEG into REDV tethered surface inhibited HASMCs adhesion significantly and remained a high level of HUVECs growth. Furthermore, the surface with short free PEG chain (n=6) was much more effective to enhance ECs selectivity than long EG chain (n=23). The combination of nonspecific resistance of short free PEG and the ECs selectivity of REDV peptide presents much better ability to enhance the competitive adhesion of HUVECs over HASMCs.
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Affiliation(s)
- Yu Wei
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou 310027, PR China
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28
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Zhang LH, Luo T, Zhang C, Luo P, Jin X, Song CX, Gao RL. Anti-DNA antibody modified coronary stent for plasmid gene delivery: results obtained from a porcine coronary stent model. J Gene Med 2010; 13:37-45. [PMID: 21259407 DOI: 10.1002/jgm.1529] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2009] [Revised: 07/05/2010] [Accepted: 11/14/2010] [Indexed: 11/11/2022] Open
Abstract
BACKGROUND Previous work in our laboratory has demonstrated that the anti-DNA antibody-immobilized stent results in highly site-specific gene delivery in a rabbit carotid model. As a result of the similarity in the anatomy and physiology of the pig and human cardiovascular systems, the porcine coronary stent model was used in the present study to evaluate the site-specificity, efficiency and long-term therapeutic effect of this gene delivery system in pig coronary arteries. METHODS A reporter plasmid pEGFP (pEGFP-C1) was tethered on the antibody-immobilized stents and assessed for site-specificity and efficiency in a pig coronary stent model. Inducible nitric oxide synthase (NOS) cDNA (pcDNA3.1-iNOS) was tethered on the stent as a therapeutic gene to evaluate the site-specificity and long-term therapeutic effect of this novel gene delivery system for the inhibition of restenosis after coronary stenting for 28 days. RESULTS Both the pEGFP-C1 and pcDNA3.1-iNOS tethered stents achieved site-specific gene transfection without distal spreading in the porcine coronary model. The overall GFP transfection efficiency was 2.6 ± 0.9% of the total cells, whereas the neointimal transfection was more than 6%. Histology and morphology studies showed no significant artery stenosis and intimal proliferation for 28 days after coronary stenting using pcDNA3.1-iNOS tethered stents. CONCLUSIONS For the first time, we report the successful use of anti-DNA antibody-immobilized stent as plasmid gene delivery system that possess high efficiency and site-specificity in a porcine coronary stent model. The novel system showed long-term therapeutic effects on the inhibition of restenosis when pcDNA3.1-iNOS was tethered on the stent.
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Affiliation(s)
- Lin-Hua Zhang
- Tianjin Key Laboratory of Biomaterials, Institute of Biomedical Engineering, Peking Union Medical College & Chinese Academy of Medical Sciences, Tianjin, China
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29
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Aliño SF, José Herrero M, Bodi V, Noguera I, Mainar L, Dasí F, Sempere A, Sánchez M, Díaz A, Sabater L, Lledó S. Naked DNA delivery to whole pig cardiac tissue by coronary sinus retrograde injection employing non-invasive catheterization. J Gene Med 2010; 12:920-6. [PMID: 20967894 DOI: 10.1002/jgm.1510] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2010] [Revised: 07/23/2010] [Accepted: 09/26/2010] [Indexed: 01/13/2023] Open
Abstract
BACKGROUND Hydrodynamic injection has demonstrated to be very efficient in the liver of small animals, although this procedure must be translated to the clinical practice in a milder but no less efficient way. The present study evaluates the capacity of non-invasive interventional catheterization as a procedure for naked DNA delivery to the heart in large animals. METHODS Two catheters were placed in the coronary sinus: one of them to block blood circulation and the other to retrogradely inject 50 ml of a saline solution of DNA (20 µg/ml) containing the enhanced green fluorescent protein (EGFP) gene, at a flow rate of 5 ml/s. RESULTS The results obtained show that EGFP protein, identified by immunohistochemistry, was present and widely distributed throughout the atrial and ventricular cardiac tissue. This observation agrees with the efficiency of EGFP gene delivery resulting in 1-200 EGFP gene copies per endogenous haploid genome. However, the transcription efficiency of the exogenous EGFP gene was at a ratio of 0.2-10 copies with respect to the endogenous GAPDH gene, suggesting that optimized gene constructs for expression in cardiac tissue could increase the final efficacy of gene transfer. CONCLUSIONS We conclude that the retrovenous injection of naked DNA in the coronary sinus employing the catheterization technique is an easy and probably safe method for whole cardiac gene transfer.
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Affiliation(s)
- Salvador F Aliño
- Departamento de Farmacología, Facultad de Medicina, Universidad de Valencia, Spain.
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In situ endothelialization of intravascular stents coated with an anti-CD34 antibody functionalized heparin–collagen multilayer. Biomaterials 2010; 31:4017-25. [DOI: 10.1016/j.biomaterials.2010.01.092] [Citation(s) in RCA: 196] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2009] [Accepted: 01/15/2010] [Indexed: 11/21/2022]
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31
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Electroporation-mediated delivery of a naked DNA plasmid expressing VEGF to the porcine heart enhances protein expression. Gene Ther 2009; 17:419-23. [PMID: 19956270 DOI: 10.1038/gt.2009.153] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Gene therapy is an attractive method for the treatment of cardiovascular disease. However, using current strategies, induction of gene expression at therapeutic levels is often inefficient. In this study, we show a novel electroporation (EP) method to enhance the delivery of a plasmid expressing an angiogenic growth factor (vascular endothelial growth factor, VEGF), which is a molecule previously documented to stimulate revascularization in coronary artery disease. DNA expression plasmids were delivered in vivo to the porcine heart with or without coadministered EP to determine the potential effect of electrically mediated delivery. The results showed that plasmid delivery through EP significantly increased cardiac expression of VEGF compared with injection of plasmid alone. This is the first report showing successful intracardiac delivery, through in vivo EP, of a protein expressing plasmid in a large animal.
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Bauhuber S, Hozsa C, Breunig M, Göpferich A. Delivery of nucleic acids via disulfide-based carrier systems. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2009; 21:3286-3306. [PMID: 20882498 DOI: 10.1002/adma.200802453] [Citation(s) in RCA: 220] [Impact Index Per Article: 14.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
Nucleic acids are not only expected to assume a pivotal position as "drugs" in the treatment of genetic and acquired diseases, but could also act as molecular cues to control the microenvironment during tissue regeneration. Despite this promise, the efficient delivery of nucleic acids to their side of action is still the major hurdle. One among many prerequisites for a successful carrier system for nucleic acids is high stability in the extracellular environment, accompanied by an efficient release of the cargo in the intracellular compartment. A promising strategy to create such an interactive delivery system is to exploit the redox gradient between the extra- and intracellular compartments. In this review, emphasis is placed on the biological rationale for the synthesis of redox sensitive, disulfide-based carrier systems, as well as the extra- and intracellular processing of macromolecules containing disulfide bonds. Moreover, the basic synthetic approaches for introducing disulfide bonds into carrier molecules, together with examples that demonstrate the benefit of disulfides at the individual stages of nucleic acid delivery, will be presented.
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Effect of acyl chain length on transfection efficiency and toxicity of polyethylenimine. Int J Pharm 2009; 378:201-10. [PMID: 19501146 DOI: 10.1016/j.ijpharm.2009.05.052] [Citation(s) in RCA: 66] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2009] [Revised: 05/18/2009] [Accepted: 05/25/2009] [Indexed: 11/20/2022]
Abstract
Polyethylenimine (PEI) is an efficient nonviral gene delivery vector because of its high buffering capacity and DNA condensation ability. In our study, the amino groups on the polymeric backbone were acylated using acetic or propionic anhydride to alter the protonation behaviour and the hydrophilic/hydrophobic balance of the polymer. The concentration of acylated primary amines was determined using trinitrobenzene sulphonic acid assay. Results showed that our modified polymers had lower buffering capacities in solutions compared to PEI. The polymers were complexed with plasmid encoding enhanced green fluorescent protein at three different ratios (1:1, 1:2 and 1:10 w/w DNA to polymer) to form polyplexes and their toxicities and transfection efficiencies were evaluated in HEK 293 cells. Acylation reduced the number of primary amines on the polymer and the surface charge, improving haemocompatibility and reducing cytotoxicity. The reduction in the concentration of amino groups helped to optimise DNA compaction and facilitated polyplex dissociation in the cell, which increased transfection efficiency of the modified polymers compared to the parent polymer. Polymers with buffering capacities greater than 50% and less than 80% relative to PEI, showed higher transfection efficiencies than PEI. The propionic anhydride modified polymers had appropriate interactions with DNA which provided both DNA compaction and polyplex dissociation. These systems interacted better with the cell membrane because of their slightly higher lipophilicity and formed polyplexes which were less cytotoxic than polyplexes of acetic anhydride modified polymers. Among the vectors tested, 1:0.3 mol/mol PEI:propionic anhydride in a 1:2 w/w DNA:polymer composition provided the best transfection system with improved transfection efficiency and reduced cytotoxicity.
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Lan X, Yin X, Wang R, Liu Y, Zhang Y. Comparative study of cellular kinetics of reporter probe [131I]FIAU in neonatal cardiac myocytes after transfer of HSV1-tk reporter gene with two vectors. Nucl Med Biol 2009; 36:207-13. [DOI: 10.1016/j.nucmedbio.2008.10.016] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2008] [Revised: 10/01/2008] [Accepted: 10/27/2008] [Indexed: 01/29/2023]
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Molecular Imaging of Gene Expression and Cell Trafficking. Mol Imaging 2009. [DOI: 10.1007/978-3-540-76735-0_18] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
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Lukyanenko V. Delivery of nano-objects to functional sub-domains of healthy and failing cardiac myocytes. Nanomedicine (Lond) 2008; 2:831-46. [PMID: 18095849 DOI: 10.2217/17435889.2.6.831] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023] Open
Abstract
Cardiovascular disease, including heart failure, is one of the leading causes of mortality in the world. Delivery of nano-objects as carriers for markers, drugs or therapeutic genes to cellular organelles has the potential to sharply increase the efficiency of diagnostic and treatment protocols for heart failure. However, cardiac cells present special problems to the delivery of nano-objects, and the number of papers devoted to this important area is remarkably small. The present review discusses fundamental aspects, problems and perspectives in the delivery of nano-objects to functional sub-domains of failing cardiomyocytes. What size nano-objects can reach cellular sub-domains in failing hearts? What are the mechanisms for their permeation through the sarcolemma? How can we improve the delivery of nano-objects to the sub-domains? Answering these questions is fundamental to identifying cellular targets within the failing heart and the development of nanocarriers for heart-failure therapy at the cellular level.
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Affiliation(s)
- Valeriy Lukyanenko
- University of Maryland Biotechnology Institute, Medical Biotechnology Center, 725 W. Lombard St., Rm S216, Baltimore, MD 21201, USA.
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Nafee N, Schneider M, Lehr CM. Charge Modification of Pharmaceutical Nanocarriers: Biological Implications. MULTIFUNCTIONAL PHARMACEUTICAL NANOCARRIERS 2008. [DOI: 10.1007/978-0-387-76554-9_11] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/10/2023]
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In vitro and in vivo analysis of expression cassettes designed for vascular gene transfer. Gene Ther 2007; 15:340-6. [PMID: 17989704 DOI: 10.1038/sj.gt.3303058] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Increasing the level and duration of transgene expression and restricting expression to vascular cells are important goals for clinically useful gene therapy vectors. We evaluated several promoters, enhancers and introns in endothelial, smooth muscle and liver cells in tissue culture and in vivo, comparing local delivery to the carotid artery with intravenous delivery to the liver. A 1800-bp fragment of the oxidized LDL receptor (LOX-1) promoter showed highest in vivo activity in the carotid artery, achieving 39% the activity of the reference cytomegalovirus promoter, with 188-fold greater specificity for carotid artery over liver. An enhancer from the Tie2 gene in combination with the intracellular adhesion molecule-2 promoter improved endothelial specificity of plasmid vectors, increased the expression from adenoviral vectors in cultured endothelial cells and doubled the specificity for carotid artery over liver in vivo. Adding a short intron to expression cassettes increased expression in both endothelial and smooth muscle cells in vitro; however, the eNOS enhancer failed to consistently increase the expression or endothelial specificity of the vector. In conclusion, elements from the LOX-1 promoter and Tie2 enhancer together with an intron can be used to improve vectors for vascular gene transfer.
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Takahashi H, Letourneur D, Grainger DW. Delivery of large biopharmaceuticals from cardiovascular stents: a review. Biomacromolecules 2007; 8:3281-93. [PMID: 17929968 PMCID: PMC2606669 DOI: 10.1021/bm700540p] [Citation(s) in RCA: 55] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
This review focuses on new and emerging large-molecule bioactive agents delivered from stent surfaces in drug-eluting stents (DESs) to inhibit vascular restenosis in the context of interventional cardiology. New therapeutic agents representing proteins, nucleic acids (small interfering RNAs and large DNA plasmids), viral delivery vectors, and even engineered cell therapies require specific delivery designs distinct from traditional smaller-molecule approaches on DESs. While small molecules are currently the clinical standard for coronary stenting, extension of the DESs to other lesion types, peripheral vasculature, and nonvasculature therapies will seek to deliver an increasingly sophisticated armada of drug types. This review describes many of the larger-molecule and biopharmaceutical approaches reported recently for stent-based delivery with the challenges associated with formulating and delivering these drug classes compared to the current small-molecule drugs. It also includes perspectives on possible future applications that may improve safety and efficacy and facilitate diversification of the DESs to other clinical applications.
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Affiliation(s)
- Hironobu Takahashi
- Department of Pharmaceutics and Pharmaceutical Chemistry, 30 South 2000 East, University of Utah, Salt Lake City, UT 84112-5280, USA
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Construction and characterization of a thrombin-resistant designer FGF-based collagen binding domain angiogen. Biomaterials 2007; 29:327-36. [PMID: 17950455 DOI: 10.1016/j.biomaterials.2007.09.034] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2007] [Accepted: 09/23/2007] [Indexed: 11/21/2022]
Abstract
Humans demonstrate limited spontaneous endothelialization of prosthetic bypass grafts. However the local application of growth factors to prosthetic grafts or to injured blood vessels can provide an immediate effect on endothelialization. Novel chimeric proteins combining potent angiogens with extracellular matrix binding domains may localize to exposed matrices and provide sustained activity to promote endothelial regeneration after vascular interventions. We have ligated a thrombin-resistant mutant of fibroblast growth factor (FGF)-1 (R136K) with a collagen binding domain (CBD) in order to direct this growth factor to sites of exposed vascular collagen or selected bioengineered scaffolds. While FGF-1 and R136K are readily attracted to a variety of matrix proteins, R136K-CBD demonstrated selective and avid binding to collagen approximately 4x that of FGF-1 or R136K alone (P<0.05). The molecular stability of R136K-CBD was superior to FGF-1 and R136K. Its chemotactic activity was superior to R136K and FGF-1 (11+/-1% vs. 6+/-2% and 4+/-1%; P<0.01). Its angiogenic activity was similar to R136K and significantly greater than control by day 2 (P<0.01). After day 3, FGF-1-treated endothelial cell's (EC) sprouts had regressed back to levels insignificant compared to the control group (P=0.17), while both R136K and R136K-CBD continued to demonstrate greater sprout lengthening as compared to control (P<0.0002). The mitogenic activity of all growth factors was greater than control groups (20% PBS); in all comparisons (P<0.0001). This dual functioning angiogen provides proof of concept for the application of designer angiogens to matrix binding proteins to intelligently promote endothelial regeneration of selected matrices.
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Nafee N, Taetz S, Schneider M, Schaefer UF, Lehr CM. Chitosan-coated PLGA nanoparticles for DNA/RNA delivery: effect of the formulation parameters on complexation and transfection of antisense oligonucleotides. NANOMEDICINE-NANOTECHNOLOGY BIOLOGY AND MEDICINE 2007; 3:173-83. [PMID: 17692575 DOI: 10.1016/j.nano.2007.03.006] [Citation(s) in RCA: 173] [Impact Index Per Article: 10.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/22/2007] [Revised: 03/01/2007] [Accepted: 03/15/2007] [Indexed: 11/22/2022]
Abstract
Cationically modified poly(D,L-lactide-co-glycolide) (PLGA) nanoparticles have recently been introduced as novel carriers for DNA/RNA delivery. The colloidal characteristics of the nanoparticles--particle size and surface charge--are considered the most significant determinants in the cellular uptake and trafficking of the nanoparticles. Therefore, our aim was to introduce chitosan-coated PLGA nanoparticles, whose size and charge are tunable to adapt for a specific task. The results showed that biodegradable nanoparticles as small as 130 nm and adjustable surface charge can be tailored controlling the process parameters. As a proof of concept, the overall potential of these particulate carriers to bind the antisense oligonucleotides, 2'-O-methyl-RNA, and improve their cellular uptake was demonstrated. The study proved the efficacy of chitosan-coated PLGA nanoparticles as a flexible and efficient delivery system for antisense oligonucleotides to lung cancer cells.
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Affiliation(s)
- Noha Nafee
- Biopharmaceutics and Pharmaceutical Technology, Saarland University, Saarbrücken, Germany
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Inubushi M, Tamaki N. Radionuclide reporter gene imaging for cardiac gene therapy. Eur J Nucl Med Mol Imaging 2007; 34 Suppl 1:S27-33. [PMID: 17464505 DOI: 10.1007/s00259-007-0438-x] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
INTRODUCTION In the field of cardiac gene therapy, angiogenic gene therapy has been most extensively investigated. The first clinical trial of cardiac angiogenic gene therapy was reported in 1998, and at the peak, more than 20 clinical trial protocols were under evaluation. However, most trials have ceased owing to the lack of decisive proof of therapeutic effects and the potential risks of viral vectors. In order to further advance cardiac angiogenic gene therapy, remaining open issues need to be resolved: there needs to be improvement of gene transfer methods, regulation of gene expression, development of much safer vectors and optimisation of therapeutic genes. For these purposes, imaging of gene expression in living organisms is of great importance. In radionuclide reporter gene imaging, "reporter genes" transferred into cell nuclei encode for a protein that retains a complementary "reporter probe" of a positron or single-photon emitter; thus expression of the reporter genes can be imaged with positron emission tomography or single-photon emission computed tomography. Accordingly, in the setting of gene therapy, the location, magnitude and duration of the therapeutic gene co-expression with the reporter genes can be monitored non-invasively. In the near future, gene therapy may evolve into combination therapy with stem/progenitor cell transplantation, so-called cell-based gene therapy or gene-modified cell therapy. CONCLUSION Radionuclide reporter gene imaging is now expected to contribute in providing evidence on the usefulness of this novel therapeutic approach, as well as in investigating the molecular mechanisms underlying neovascularisation and safety issues relevant to further progress in conventional gene therapy.
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Affiliation(s)
- Masayuki Inubushi
- Department of Molecular Imaging, Hokkaido University Graduate School of Medicine, Kita 15 Nishi 7 Kita-ku, Sapporo 060-8638, Japan.
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Christensen LV, Chang CW, Yockman JW, Conners R, Jackson H, Zhong Z, Feijen J, Bull DA, Kim SW. Reducible poly(amido ethylenediamine) for hypoxia-inducible VEGF delivery. J Control Release 2006; 118:254-61. [PMID: 17276536 PMCID: PMC2563956 DOI: 10.1016/j.jconrel.2006.12.018] [Citation(s) in RCA: 58] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2006] [Revised: 12/09/2006] [Accepted: 12/14/2006] [Indexed: 11/29/2022]
Abstract
Delivery of the hypoxia-inducible vascular endothelial growth factor (RTP-VEGF) plasmid using a novel reducible disulfide poly(amido ethylenediamine) (SS-PAED) polymer carrier was studied in vitro and in vivo. In vitro transfection of primary rat cardiomyoblasts (H9C2) showed SS-PAED at a weighted ratio of 12:1 (polymer/DNA) mediates 16 fold higher expression of luciferase compared to an optimized bPEI control. FACS analysis revealed up to 57+/-2% GFP positive H9C2s. The efficiency of plasmid delivery to H9C2 using SS-PAED was found to depend upon glutathione (GSH) levels inside the cell. SS-PAED mediated delivery of RTP-VEGF plasmid produced significantly higher levels of VEGF expression (up to 76 fold) under hypoxic conditions compared to normoxic conditions in both H9C2 and rat aortic smooth muscle cells (A7R5). Using SS-PAED, delivery of RTP-VEGF was investigated in a rabbit myocardial infarct model using 100 mug RTP-VEGF. Results showed up to 4 fold increase in VEGF protein expression in the region of the infarct compared to injections of SS-PAED/RTP-Luc. In conclusion, SS-PAED mediated therapeutic delivery improves the efficacy of ischemia-inducible VEGF gene therapy both in vitro and in vivo and therefore, has potential for the promotion of neo-vascular formation and improvement of tissue function in ischemic myocardium.
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Affiliation(s)
- Lane V. Christensen
- Department of Pharmaceutics and Pharmaceutical Chemistry, University of Utah, Salt Lake City, Utah 84112-5820, USA
| | - Chien-Wen Chang
- Department of Pharmaceutics and Pharmaceutical Chemistry, University of Utah, Salt Lake City, Utah 84112-5820, USA
| | - James W. Yockman
- Department of Pharmaceutics and Pharmaceutical Chemistry, University of Utah, Salt Lake City, Utah 84112-5820, USA
| | - Rafe Conners
- Department of Surgery, Division of Cardiothoracic Surgery, University of Utah Health Sciences Center, Salt Lake City, Utah, 84112-5820, USA
| | - Heidi Jackson
- Department of Surgery, Division of Cardiothoracic Surgery, University of Utah Health Sciences Center, Salt Lake City, Utah, 84112-5820, USA
| | - Zhiyuan Zhong
- Department of Polymer Chemistry and Biomaterials, and Institute for Biomedical Technology (BMTI), Faculty of Science and Technology, University of Twente, P.O. Box 217, 7500 AE Enschede, The Netherlands
| | - Jan Feijen
- Department of Polymer Chemistry and Biomaterials, and Institute for Biomedical Technology (BMTI), Faculty of Science and Technology, University of Twente, P.O. Box 217, 7500 AE Enschede, The Netherlands
| | - David A. Bull
- Department of Surgery, Division of Cardiothoracic Surgery, University of Utah Health Sciences Center, Salt Lake City, Utah, 84112-5820, USA
| | - Sung Wan Kim
- Department of Pharmaceutics and Pharmaceutical Chemistry, University of Utah, Salt Lake City, Utah 84112-5820, USA
- *To whom correspondence and reprint requests should be addressed. Phone: (801) 581-6654. Fax: (801) 581-7848;
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