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Hou M, Tian B, Bai B, Ci Z, Liu Y, Zhang Y, Zhou G, Cao Y. Dominant role of in situ native cartilage niche for determining the cartilage type regenerated by BMSCs. Bioact Mater 2022; 13:149-160. [PMID: 35224298 PMCID: PMC8843973 DOI: 10.1016/j.bioactmat.2021.11.007] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2021] [Revised: 11/03/2021] [Accepted: 11/04/2021] [Indexed: 12/27/2022] Open
Affiliation(s)
- Mengjie Hou
- Department of Plastic and Reconstructive Surgery, Shanghai 9th People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai Key Laboratory of Tissue Engineering, Shanghai, PR China
- National Tissue Engineering Center of China, Shanghai, PR China
| | - Baoxing Tian
- Department of Breast Surgery, Tongren Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200336, PR China
| | - Baoshuai Bai
- National Tissue Engineering Center of China, Shanghai, PR China
- Research Institute of Plastic Surgery, Wei Fang Medical College, Weifang, PR China
| | - Zheng Ci
- National Tissue Engineering Center of China, Shanghai, PR China
- Research Institute of Plastic Surgery, Wei Fang Medical College, Weifang, PR China
| | - Yu Liu
- National Tissue Engineering Center of China, Shanghai, PR China
- Research Institute of Plastic Surgery, Wei Fang Medical College, Weifang, PR China
| | - Yixin Zhang
- Department of Plastic and Reconstructive Surgery, Shanghai 9th People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai Key Laboratory of Tissue Engineering, Shanghai, PR China
| | - Guangdong Zhou
- Department of Plastic and Reconstructive Surgery, Shanghai 9th People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai Key Laboratory of Tissue Engineering, Shanghai, PR China
- National Tissue Engineering Center of China, Shanghai, PR China
- Research Institute of Plastic Surgery, Wei Fang Medical College, Weifang, PR China
- Corresponding author. Shanghai Key Lab of Tissue Engineering, Shanghai 9th People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200011, PR China.
| | - Yilin Cao
- Department of Plastic and Reconstructive Surgery, Shanghai 9th People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai Key Laboratory of Tissue Engineering, Shanghai, PR China
- National Tissue Engineering Center of China, Shanghai, PR China
- Corresponding author. Shanghai Key Lab of Tissue Engineering, Shanghai 9th People's Hospital, Shanghai Jiao Tong University School of Medicine, No. 639 Zhi Zao Ju Road, Shanghai, 200011, PR China.
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Maintenance and gene electrotransfer efficiency of antibiotic resistance gene-free plasmids encoding mouse, canine and human interleukin-12 orthologues. Heliyon 2022; 8:e08879. [PMID: 35265755 PMCID: PMC8899673 DOI: 10.1016/j.heliyon.2022.e08879] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2021] [Revised: 12/29/2021] [Accepted: 01/29/2022] [Indexed: 11/26/2022] Open
Abstract
Interleukin 12 (IL-12) is a cytokine used as a therapeutic molecule in cancer immunotherapy. Gene electrotransfer mediated delivery of IL-12 gene has reached clinical evaluation in the USA using a plasmid that in addition to IL-12 gene also carry an antibiotic resistance gene needed for its production in bacteria. In Europe however, European Medicines Agency recommends against the use of antibiotics during the production of clinical grade plasmids. We have prepared several antibiotic resistance gene-free plasmids using an antibiotic-free selection strategy called operator-repressor titration, including plasmids encoding mouse, canine and human IL-12 orthologues. The aim of this study was to evaluate the maintenance of these plasmids in bacterial culture and test their transfection efficiency using gene electrotransfer. Plasmid maintenance was evaluated by determining plasmid yields and topologies after subculturing transformed bacteria. Transfection efficiency was evaluated by determining the plasmid copy number, expression and cytotoxicity after gene electrotransfer to mouse, canine and human melanoma cells. The results demonstrated that our IL-12 plasmids without an antibiotic resistance gene are stably maintained in bacteria and provide sufficient IL-12 expression after in vitro gene electrotransfer; therefore, they have the potential to proceed to further in vivo evaluation studies.
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Hu WX, Chen HP, Yu K, Shen LX, Wang CY, Su SZ, Sui WJ, Shan DM, Li HZ. Gene therapy of malignant solid tumors by targeting erbB2 receptors and by activating T cells. Cancer Biother Radiopharm 2012; 27:711-8. [PMID: 22988969 DOI: 10.1089/cbr.2012.1246] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
One of the strategies to improve the outcome of anti-erbB2-mediated immunotherapy is to combine anti-erbB2 antibodies with T-cell-based adoptive immunotherapy, which can be achieved by expressing anti-erbB2 mAb on the surface of T cells. A single-chain variable fragment (scFv) from an anti-erbB2 mAb has been expressed on T cell surface to bind to erbB2-positive cells, and CD3ζ has been expressed as a fusion partner at C terminus of this scFv to transduce signals. T cells grafted with this chimeric scFv/CD3ζ were able to specifically attack target tumor cells with no MHC/Ag restriction. To test the effects of CD28 signal on cellular activation and antitumor effectiveness of chimeric scFv/CD3ζ-modified T cells, we constructed a recombinant anti-erbB2 scFv/Fc/CD28/CD3ζ gene in a retroviral vector. T cells expressing anti-erbB2 scFv/Fc/CD28/CD3ζ specifically lyzed erbB2-positive target tumor cells and secreted not only interferon-γ (IFN-γ) but also IL-2 after binding to their target cells. Our data indicate that CD3 and CD28 signaling can be delivered in one molecule, which is sufficient for complete T cell activation without exogenous B7/CD28 co-stimulation.
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Affiliation(s)
- Wang-Xiong Hu
- Zhejiang Provincial Key Laboratory of Medical Genetics, Wenzhou Medical College, Wenzhou, People's Republic of China
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Rosazza C, Phez E, Escoffre JM, Cézanne L, Zumbusch A, Rols MP. Cholesterol implications in plasmid DNA electrotransfer: Evidence for the involvement of endocytotic pathways. Int J Pharm 2011; 423:134-43. [PMID: 21601622 DOI: 10.1016/j.ijpharm.2011.05.024] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2011] [Revised: 05/05/2011] [Accepted: 05/05/2011] [Indexed: 10/18/2022]
Abstract
The delivery of therapeutic molecules such as plasmid DNA in cells and tissues by means of electric fields holds great promise for anticancer treatment. To allow for their therapeutic action, the molecules have first to traverse the cell membrane. The mechanisms by which the electrotransferred pDNA interacts with and crosses the plasma membrane are not yet fully explained. The aim of this study is to unravel the role of cholesterol during gene electrotransfer in cells. We performed cholesterol depletion experiments and measured its effects on various steps of the electroporation process. The first two steps consisting of electropermeabilization of the plasma membrane and of pDNA interaction with it were not affected by cholesterol depletion. In contrast, gene expression decreased. Colocalization studies with endocytotic markers showed that pDNA is endocytosed with concomitant clathrin- and caveolin/raft-mediated endocytosis. Cholesterol might be involved in the pDNA translocation through the plasma membrane. This is the first direct experimental evidence of the occurrence of endocytosis in gene electrotransfer.
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Affiliation(s)
- Christelle Rosazza
- Department of Structural Biology and Biophysics, CNRS, Institut de Pharmacologie et de Biologie Structurale, 205 Route de Narbonne, F-31077 Toulouse, France
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Alex SM, Rekha MR, Sharma CP. Spermine grafted galactosylated chitosan for improved nanoparticle mediated gene delivery. Int J Pharm 2011; 410:125-37. [PMID: 21396993 DOI: 10.1016/j.ijpharm.2011.02.067] [Citation(s) in RCA: 48] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2010] [Revised: 02/08/2011] [Accepted: 02/08/2011] [Indexed: 12/18/2022]
Abstract
Despite multitude of beneficial features, chitosan has poor water solubility and transfection ability which affect its gene delivery efficacy. The two features are improved when certain chemical modifications are incorporated into the chitosan parent backbone. This strategy is adopted here, by coupling galactose and spermine into the chitosan backbone. The conjugation was determined with FTIR and (1)H NMR and nanoparticle morphology was assessed by TEM and AFM techniques. Particle size, zeta potential, buffering capacity and DNA binding ability gave encouraging result of enhanced solubility and stability. In vitro studies of GCSM in HepG2 cell lines displayed low cytotoxicity and improved transfection. We also identified the preference of receptor mediated internalization for nanoparticles cellular uptake by treating with cellular uptake inhibitors. The results evidently led us to comprehend that galactosylated chitosan-g-spermine could be considered as a promising chitosan derivative for conducting nanoparticle mediated gene delivery.
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Affiliation(s)
- Susan M Alex
- Biosurface Technology Division, Biomedical Technology Wing, Sree Chitra Tirunal Institute for Medical Sciences & Technology, Poojappura, Thiruvananthapuram, Kerala 695012, India
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Escoffre JM, Kaddur K, Rols MP, Bouakaz A. In vitro gene transfer by electrosonoporation. ULTRASOUND IN MEDICINE & BIOLOGY 2010; 36:1746-1755. [PMID: 20850028 DOI: 10.1016/j.ultrasmedbio.2010.06.019] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/29/2010] [Revised: 06/16/2010] [Accepted: 06/24/2010] [Indexed: 05/29/2023]
Abstract
Among the nonviral methods for gene delivery in vitro, electroporation is simple, inexpensive and safe. To upregulate the expression level of transfected gene, we investigated the applicability of electrosonoporation. This approach consists of a combination of electric pulses and ultrasound assisted with gas microbubbles. Cells were first electroporated with plasmid DNA encoding-enhanced green fluorescent protein and then sonoporated in presence of contrast microbubbles. Twenty-four hours later, cells that received electrosonoporation demonstrated a four-fold increase in transfection level and a six-fold increase in transfection efficiency compared with cells having undergone electroporation alone. Although electroporation induced the formation of DNA aggregates into the cell membrane, sonoporation induced its direct propulsion into the cytoplasm. Sonoporation can improve the transfer of electro-induced DNA aggregates by allowing its free and rapid entrance into the cells. These results demonstrated that in vitro gene transfer by electrosonoporation could provide a new potent method for gene transfer.
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Affiliation(s)
- J M Escoffre
- CNRS, Institut de Pharmacologie et de Biologie Structurale, Toulouse, France
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