1
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Hughes MP, Nelvagal HR, Coombe-Tennant O, Smith D, Smith C, Massaro G, Poupon-Bejuit L, Platt FM, Rahim AA. A Novel Small NPC1 Promoter Enhances AAV-Mediated Gene Therapy in Mouse Models of Niemann-Pick Type C1 Disease. Cells 2023; 12:1619. [PMID: 37371089 PMCID: PMC10296851 DOI: 10.3390/cells12121619] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2023] [Revised: 05/22/2023] [Accepted: 06/08/2023] [Indexed: 06/29/2023] Open
Abstract
Niemann-Pick disease type C1 (NP-C) is a prematurely lethal genetic lysosomal storage disorder with neurological and visceral pathology resulting from mutations in the NPC1 gene encoding the lysosomal transmembrane protein NPC1. There is currently no cure for NP-C, and the only disease modifying treatment, miglustat, slows disease progression but does not significantly attenuate neurological symptoms. AAV-mediated gene therapy is an attractive option for NP-C, but due to the large size of the human NPC1 gene, there may be packaging and truncation issues during vector manufacturing. One option is to reduce the size of DNA regulatory elements that are essential for gene expression, such as the promoter sequence. Here, we describe a novel small truncated endogenous NPC1 promoter that leads to high gene expression both in vitro and in vivo and compare its efficacy to other commonly used promoters. Following neonatal intracerebroventricular (ICV) injection into the CNS, this novel promoter provided optimal therapeutic efficacy compared to all other promoters including increased survival, improved behavioural phenotypes, and attenuated neuropathology in mouse models of NP-C. Taken together, we propose that this novel promoter can be extremely efficient in designing an optimised AAV9 vector for gene therapy for NP-C.
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Affiliation(s)
- Michael Paul Hughes
- UCL School of Pharmacy, University College London, London WC1N 1AX, UK (H.R.N.); (O.C.-T.); (G.M.)
| | - Hemanth Ramesh Nelvagal
- UCL School of Pharmacy, University College London, London WC1N 1AX, UK (H.R.N.); (O.C.-T.); (G.M.)
| | - Oliver Coombe-Tennant
- UCL School of Pharmacy, University College London, London WC1N 1AX, UK (H.R.N.); (O.C.-T.); (G.M.)
| | - Dave Smith
- Department of Pharmacology, University of Oxford, Oxford OX1 3QT, UK; (D.S.); (C.S.); (F.M.P.)
| | - Claire Smith
- Department of Pharmacology, University of Oxford, Oxford OX1 3QT, UK; (D.S.); (C.S.); (F.M.P.)
| | - Giulia Massaro
- UCL School of Pharmacy, University College London, London WC1N 1AX, UK (H.R.N.); (O.C.-T.); (G.M.)
| | - Laura Poupon-Bejuit
- UCL School of Pharmacy, University College London, London WC1N 1AX, UK (H.R.N.); (O.C.-T.); (G.M.)
| | - Frances Mary Platt
- Department of Pharmacology, University of Oxford, Oxford OX1 3QT, UK; (D.S.); (C.S.); (F.M.P.)
| | - Ahad Abdul Rahim
- UCL School of Pharmacy, University College London, London WC1N 1AX, UK (H.R.N.); (O.C.-T.); (G.M.)
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2
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Mastrullo V, van der Veen DR, Gupta P, Matos RS, Johnston JD, McVey JH, Madeddu P, Velliou EG, Campagnolo P. Pericytes' Circadian Clock Affects Endothelial Cells' Synchronization and Angiogenesis in a 3D Tissue Engineered Scaffold. Front Pharmacol 2022; 13:867070. [PMID: 35387328 PMCID: PMC8977840 DOI: 10.3389/fphar.2022.867070] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2022] [Accepted: 02/23/2022] [Indexed: 01/02/2023] Open
Abstract
Angiogenesis, the formation of new capillaries from existing ones, is a fundamental process in regenerative medicine and tissue engineering. While it is known to be affected by circadian rhythms in vivo, its peripheral regulation within the vasculature and the role it performs in regulating the interplay between vascular cells have not yet been investigated. Peripheral clocks within the vasculature have been described in the endothelium and in smooth muscle cells. However, to date, scarce evidence has been presented regarding pericytes, a perivascular cell population deeply involved in the regulation of angiogenesis and vessel maturation, as well as endothelial function and homeostasis. More crucially, pericytes are also a promising source of cells for cell therapy and tissue engineering. Here, we established that human primary pericytes express key circadian genes and proteins in a rhythmic fashion upon synchronization. Conversely, we did not detect the same patterns in cultured endothelial cells. In line with these results, pericytes' viability was disproportionately affected by circadian cycle disruption, as compared to endothelial cells. Interestingly, endothelial cells' rhythm could be induced following exposure to synchronized pericytes in a contact co-culture. We propose that this mechanism could be linked to the altered release/uptake pattern of lactate, a known mediator of cell-cell interaction which was specifically altered in pericytes by the knockout of the key circadian regulator Bmal1. In an angiogenesis assay, the maturation of vessel-like structures was affected only when both endothelial cells and pericytes did not express Bmal1, indicating a compensation system. In a 3D tissue engineering scaffold, a synchronized clock supported a more structured organization of cells around the scaffold pores, and a maturation of vascular structures. Our results demonstrate that pericytes play a critical role in regulating the circadian rhythms in endothelial cells, and that silencing this system disproportionately affects their pro-angiogenic function. Particularly, in the context of tissue engineering and regenerative medicine, considering the effect of circadian rhythms may be critical for the development of mature vascular structures and to obtain the maximal reparative effect.
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Affiliation(s)
- Valeria Mastrullo
- Cardiovascular Section, Department of Biochemical Sciences, University of Surrey, Guildford, United Kingdom.,Chronobiology Section, Department of Biochemical Sciences, University of Surrey, Guildford, United Kingdom.,Bioprocess and Biochemical Engineering Group (BioProChem), Department of Chemical and Process Engineering, University of Surrey, Guildford, United Kingdom
| | - Daan R van der Veen
- Chronobiology Section, Department of Biochemical Sciences, University of Surrey, Guildford, United Kingdom
| | - Priyanka Gupta
- Bioprocess and Biochemical Engineering Group (BioProChem), Department of Chemical and Process Engineering, University of Surrey, Guildford, United Kingdom
| | - Rolando S Matos
- Cardiovascular Section, Department of Biochemical Sciences, University of Surrey, Guildford, United Kingdom
| | - Jonathan D Johnston
- Chronobiology Section, Department of Biochemical Sciences, University of Surrey, Guildford, United Kingdom
| | - John H McVey
- Cardiovascular Section, Department of Biochemical Sciences, University of Surrey, Guildford, United Kingdom
| | - Paolo Madeddu
- Experimental Cardiovascular Medicine, University of Bristol, Bristol Heart Institute, Bristol Royal Infirmary, Bristol, United Kingdom
| | - Eirini G Velliou
- Bioprocess and Biochemical Engineering Group (BioProChem), Department of Chemical and Process Engineering, University of Surrey, Guildford, United Kingdom.,Centre for 3D Models of Health and Disease, Department of Targeted Intervention, Division of Surgery and Interventional Science, University College London (UCL), London, United Kingdom
| | - Paola Campagnolo
- Cardiovascular Section, Department of Biochemical Sciences, University of Surrey, Guildford, United Kingdom
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3
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Raikwar SP, Thangavel R, Ahmed ME, Selvakumar GP, Kempuraj D, Wu K, Khan O, Bazley K, Bussinger B, Kukulka K, Zaheer S, Iyer SS, Govindarajan R, Burton C, James D, Zaheer A. Real-Time Noninvasive Bioluminescence, Ultrasound and Photoacoustic Imaging in NFκB-RE-Luc Transgenic Mice Reveal Glia Maturation Factor-Mediated Immediate and Sustained Spatio-Temporal Activation of NFκB Signaling Post-Traumatic Brain Injury in a Gender-Specific Manner. Cell Mol Neurobiol 2021; 41:1687-1706. [PMID: 32785863 PMCID: PMC8188847 DOI: 10.1007/s10571-020-00937-9] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2020] [Accepted: 08/05/2020] [Indexed: 12/15/2022]
Abstract
Neurotrauma especially traumatic brain injury (TBI) is the leading cause of death and disability worldwide. To improve upon the early diagnosis and develop precision-targeted therapies for TBI, it is critical to understand the underlying molecular mechanisms and signaling pathways. The transcription factor, nuclear factor kappa B (NFκB), which is ubiquitously expressed, plays a crucial role in the normal cell survival, proliferation, differentiation, function, as well as in disease states like neuroinflammation and neurodegeneration. Here, we hypothesized that real-time noninvasive bioluminescence molecular imaging allows rapid and precise monitoring of TBI-induced immediate and rapid spatio-temporal activation of NFκB signaling pathway in response to Glia maturation factor (GMF) upregulation which in turn leads to neuroinflammation and neurodegeneration post-TBI. To test and validate our hypothesis and to gain novel mechanistic insights, we subjected NFκB-RE-Luc transgenic male and female mice to TBI and performed real-time noninvasive bioluminescence imaging (BLI) as well as photoacoustic and ultrasound imaging (PAI). Our BLI data revealed that TBI leads to an immediate and sustained activation of NFκB signaling. Further, our BLI data suggest that especially in male NFκB-RE-Luc transgenic mice subjected to TBI, in addition to brain, there is widespread activation of NFκB signaling in multiple organs. However, in the case of the female NFκB-RE-Luc transgenic mice, TBI induces a very specific and localized activation of NFκB signaling in the brain. Further, our microRNA data suggest that TBI induces significant upregulation of mir-9-5p, mir-21a-5p, mir-34a-5p, mir-16-3p, as well as mir-155-5p within 24 h and these microRNAs can be successfully used as TBI-specific biomarkers. To the best of our knowledge, this is one of the first and unique study of its kind to report immediate and sustained activation of NFκB signaling post-TBI in a gender-specific manner by utilizing real-time non-invasive BLI and PAI in NFκB-RE-Luc transgenic mice. Our study will prove immensely beneficial to gain novel mechanistic insights underlying TBI, unravel novel therapeutic targets, as well as enable us to monitor in real-time the response to innovative TBI-specific precision-targeted gene and stem cell-based precision medicine.
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Affiliation(s)
- Sudhanshu P Raikwar
- Department of Neurology, School of Medicine, University of Missouri, Columbia, MO, USA.
- Center for Translational Neuroscience, School of Medicine, University of Missouri, Columbia, MO, USA.
- Harry S. Truman Memorial Veterans' Hospital, Columbia, MO, USA.
| | - Ramasamy Thangavel
- Department of Neurology, School of Medicine, University of Missouri, Columbia, MO, USA
- Center for Translational Neuroscience, School of Medicine, University of Missouri, Columbia, MO, USA
- Harry S. Truman Memorial Veterans' Hospital, Columbia, MO, USA
| | - Mohammad Ejaz Ahmed
- Department of Neurology, School of Medicine, University of Missouri, Columbia, MO, USA
- Center for Translational Neuroscience, School of Medicine, University of Missouri, Columbia, MO, USA
- Harry S. Truman Memorial Veterans' Hospital, Columbia, MO, USA
| | - Govindhasamy Pushpavathi Selvakumar
- Department of Neurology, School of Medicine, University of Missouri, Columbia, MO, USA
- Center for Translational Neuroscience, School of Medicine, University of Missouri, Columbia, MO, USA
- Harry S. Truman Memorial Veterans' Hospital, Columbia, MO, USA
| | - Duraisamy Kempuraj
- Department of Neurology, School of Medicine, University of Missouri, Columbia, MO, USA
- Center for Translational Neuroscience, School of Medicine, University of Missouri, Columbia, MO, USA
- Harry S. Truman Memorial Veterans' Hospital, Columbia, MO, USA
| | - Kristopher Wu
- Department of Neurology, School of Medicine, University of Missouri, Columbia, MO, USA
- Center for Translational Neuroscience, School of Medicine, University of Missouri, Columbia, MO, USA
| | - Osaid Khan
- Department of Neurology, School of Medicine, University of Missouri, Columbia, MO, USA
- Center for Translational Neuroscience, School of Medicine, University of Missouri, Columbia, MO, USA
| | - Kieran Bazley
- Department of Neurology, School of Medicine, University of Missouri, Columbia, MO, USA
- Center for Translational Neuroscience, School of Medicine, University of Missouri, Columbia, MO, USA
| | - Bret Bussinger
- Department of Neurology, School of Medicine, University of Missouri, Columbia, MO, USA
- Center for Translational Neuroscience, School of Medicine, University of Missouri, Columbia, MO, USA
| | - Klaudia Kukulka
- Department of Neurology, School of Medicine, University of Missouri, Columbia, MO, USA
- Center for Translational Neuroscience, School of Medicine, University of Missouri, Columbia, MO, USA
| | - Smita Zaheer
- Department of Neurology, School of Medicine, University of Missouri, Columbia, MO, USA
- Center for Translational Neuroscience, School of Medicine, University of Missouri, Columbia, MO, USA
| | - Shankar S Iyer
- Department of Neurology, School of Medicine, University of Missouri, Columbia, MO, USA
- Center for Translational Neuroscience, School of Medicine, University of Missouri, Columbia, MO, USA
- Harry S. Truman Memorial Veterans' Hospital, Columbia, MO, USA
| | - Raghav Govindarajan
- Department of Neurology, School of Medicine, University of Missouri, Columbia, MO, USA
| | | | | | - Asgar Zaheer
- Department of Neurology, School of Medicine, University of Missouri, Columbia, MO, USA.
- Center for Translational Neuroscience, School of Medicine, University of Missouri, Columbia, MO, USA.
- Harry S. Truman Memorial Veterans' Hospital, Columbia, MO, USA.
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4
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Belleti E, Bevilaqua VR, Brito AMM, Modesto DA, Lanfredi AJC, Viviani VR, Nantes-Cardoso IL. Synthesis of bioluminescent gold nanoparticle-luciferase hybrid systems for technological applications. Photochem Photobiol Sci 2021; 20:1439-1453. [PMID: 34613602 PMCID: PMC8493054 DOI: 10.1007/s43630-021-00111-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2021] [Accepted: 09/27/2021] [Indexed: 11/01/2022]
Abstract
Bioluminescent gold nanoparticles (AuNPs) were synthesized in situ using dithiol-terminated polyethylene glycol (PEG(SH)2) as reducer and stabilizing agents. Hybrid Au/F3O4 nanoparticles were also produced in a variation of synthesis, and both types of nanostructures had the polymer capping replaced by L-cysteine (Cys). The four types of nanoparticles, PEG(SH)2AuNPs, PEG(SH)2Au/F3O4NPs, CysAuNPs, and CysAu/F3O4NPs were associated with purified recombinant Pyrearinus termitilluminans green emitting click beetle luciferase (PyLuc) and Phrixotrix hirtus (RELuc) red-emitting railroad worm luciferase. Enzyme association with PEG(SH)2 was also investigated as a control. Luciferases were chosen because they catalyze bioluminescent reactions used in a wide range of bioanalytical applications, including ATP assays, gene reporting, high-throughput screening, bioluminescence imaging, biosensors and other bioluminescence-based assays. The immobilization of PyLuc and RELuc promoted partial suppression of the enzyme luminescence activity in a functionalization-dependent way. Association of PyLuc and RELuc with AuNPs increased the enzyme operational stability in relation to the free enzyme, as evidenced by the luminescence intensity from 0 to 7 h after substrate addition. The stability of the immobilized enzymes was also functionalization-dependent and the association with CysAuNPs was the condition that combined more sustained luminescent activity with a low degree of luminescence quenching. The higher enzymatic stability and sustained luminescence of luciferases associated with nanoparticles may improve the applicability of bioluminescence for bioimaging and biosensing purposes.
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Affiliation(s)
- Elisângela Belleti
- Universidade Federal do ABC (UFABC), Av. dos Estados, 5001, Bairro Bangu, Santo André, SP, 09210-580, Brazil
| | - Vanessa R Bevilaqua
- Graduate School of Evolutive Genetics and Molecular Biology (UFSCar), São Carlos, SP, Brazil
| | - Adrianne M M Brito
- Universidade Federal do ABC (UFABC), Av. dos Estados, 5001, Bairro Bangu, Santo André, SP, 09210-580, Brazil
| | - Diego A Modesto
- Universidade Federal do ABC (UFABC), Av. dos Estados, 5001, Bairro Bangu, Santo André, SP, 09210-580, Brazil
| | - Alexandre J C Lanfredi
- Universidade Federal do ABC (UFABC), Av. dos Estados, 5001, Bairro Bangu, Santo André, SP, 09210-580, Brazil
| | - Vadim R Viviani
- Universidade Federal do ABC (UFABC), Av. dos Estados, 5001, Bairro Bangu, Santo André, SP, 09210-580, Brazil
- Graduate School of Biotechnology and Environmental Monitoring (UFSCar), Sorocaba, SP, Brazil
| | - Iseli L Nantes-Cardoso
- Universidade Federal do ABC (UFABC), Av. dos Estados, 5001, Bairro Bangu, Santo André, SP, 09210-580, Brazil.
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5
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Bates EA, Counsell JR, Alizert S, Baker AT, Suff N, Boyle A, Bradshaw AC, Waddington SN, Nicklin SA, Baker AH, Parker AL. In Vitro and In Vivo Evaluation of Human Adenovirus Type 49 as a Vector for Therapeutic Applications. Viruses 2021; 13:1483. [PMID: 34452348 PMCID: PMC8402785 DOI: 10.3390/v13081483] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2021] [Revised: 07/22/2021] [Accepted: 07/26/2021] [Indexed: 01/14/2023] Open
Abstract
The human adenovirus phylogenetic tree is split across seven species (A-G). Species D adenoviruses offer potential advantages for gene therapy applications, with low rates of pre-existing immunity detected across screened populations. However, many aspects of the basic virology of species D-such as their cellular tropism, receptor usage, and in vivo biodistribution profile-remain unknown. Here, we have characterized human adenovirus type 49 (HAdV-D49)-a relatively understudied species D member. We report that HAdV-D49 does not appear to use a single pathway to gain cell entry, but appears able to interact with various surface molecules for entry. As such, HAdV-D49 can transduce a broad range of cell types in vitro, with variable engagement of blood coagulation FX. Interestingly, when comparing in vivo biodistribution to adenovirus type 5, HAdV-D49 vectors show reduced liver targeting, whilst maintaining transduction of lung and spleen. Overall, this presents HAdV-D49 as a robust viral vector platform for ex vivo manipulation of human cells, and for in vivo applications where the therapeutic goal is to target the lung or gain access to immune cells in the spleen, whilst avoiding liver interactions, such as intravascular vaccine applications.
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Affiliation(s)
- Emily A. Bates
- Division of Cancer and Genetics, School of Medicine, Cardiff University, Cardiff CF14 4XN, UK; (E.A.B.); (A.T.B.)
| | - John R. Counsell
- Genetics and Genomic Medicine Research and Teaching Department, UCL Great Ormond Street Institute of Child Health, London WC1N 1EH, UK;
- NIHR Great Ormond Street Hospital Biomedical Research Centre, 30 Guilford Street, London WC1N 1EH, UK
| | - Sophie Alizert
- Institute of Cardiovascular and Medical Sciences, BHF Glasgow Cardiovascular Research Centre, University of Glasgow, Glasgow G12 8TA, UK; (S.A.); (A.C.B.); (S.A.N.)
| | - Alexander T. Baker
- Division of Cancer and Genetics, School of Medicine, Cardiff University, Cardiff CF14 4XN, UK; (E.A.B.); (A.T.B.)
- Center for Individualized Medicine, Mayo Clinic, Scottsdale, AZ 85259, USA
| | - Natalie Suff
- Department of Women and Children’s Health, King’s College London, St Thomas’ Hospital, Westminster Bridge Road, London SE1 7EH, UK;
| | - Ashley Boyle
- Gene Transfer Technology Group, EGA Institute for Women’s Health, University College London, 86-96 Chenies Mews, London WC1E 6BT, UK; (A.B.); (S.N.W.)
| | - Angela C. Bradshaw
- Institute of Cardiovascular and Medical Sciences, BHF Glasgow Cardiovascular Research Centre, University of Glasgow, Glasgow G12 8TA, UK; (S.A.); (A.C.B.); (S.A.N.)
| | - Simon N. Waddington
- Gene Transfer Technology Group, EGA Institute for Women’s Health, University College London, 86-96 Chenies Mews, London WC1E 6BT, UK; (A.B.); (S.N.W.)
- MRC Antiviral Gene Therapy Research Unit, Faculty of Health Sciences, University of the Witswatersrand, Johannesburg 2193, South Africa
| | - Stuart A. Nicklin
- Institute of Cardiovascular and Medical Sciences, BHF Glasgow Cardiovascular Research Centre, University of Glasgow, Glasgow G12 8TA, UK; (S.A.); (A.C.B.); (S.A.N.)
| | - Andrew H. Baker
- Institute of Cardiovascular and Medical Sciences, BHF Glasgow Cardiovascular Research Centre, University of Glasgow, Glasgow G12 8TA, UK; (S.A.); (A.C.B.); (S.A.N.)
- Queen’s Medical Research Institute, University of Edinburgh, 47 Little France Crescent, Edinburgh EH16 4TJ, UK
| | - Alan L. Parker
- Division of Cancer and Genetics, School of Medicine, Cardiff University, Cardiff CF14 4XN, UK; (E.A.B.); (A.T.B.)
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6
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Cmielewski P, Delhove J, Donnelley M, Parsons D. Assessment of Lentiviral Vector Mediated CFTR Correction in Mice Using an Improved Rapid in vivo Nasal Potential Difference Measurement Protocol. Front Pharmacol 2021; 12:714452. [PMID: 34385926 PMCID: PMC8353152 DOI: 10.3389/fphar.2021.714452] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2021] [Accepted: 07/05/2021] [Indexed: 12/20/2022] Open
Abstract
Cystic Fibrosis (CF) is caused by a defect in the CF transmembrane conductance regulator (CFTR) gene responsible for epithelial ion transport. Nasal potential difference (PD) measurement is a well established diagnostic technique for assessing the efficacy of therapies in CF patients and animal models. The aim was to establish a rapid nasal PD protocol in mice and quantify the efficacy of lentiviral (LV) vector-based CFTR gene therapy. Anaesthetised wild-type (WT) and CF mice were non-surgically intubated and nasal PD measurements were made using a range of buffer flow rates. Addition of the cAMP agonist, isoproterenol, to the buffer sequence was then examined. The optimised rapid PD technique was then used to assess CFTR function produced by second and third generation LV-CFTR vectors. V5 epitope tagged-CFTR in nasal tissue was identified by immunohistochemistry. When intubated, mice tolerated higher flow rates. Isoproterenol could discriminate between WT and CF mice. Improved chloride transport was observed for the second and third generation LV-CFTR vectors, with up to 60% correction of the cAMP-driven chloride response towards WT. V5-CFTR was located in ciliated epithelial cells. The rapid PD technique enables improved functional assessment of the bioelectrical ion transport defect for both current and potential CF therapies.
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Affiliation(s)
- P Cmielewski
- Respiratory and Sleep Medicine, Women's and Children's Hospital, Adelaide, SA, Australia.,Robinson Research Institute, University of Adelaide, Adelaide, SA, Australia.,Adelaide Medical School, University of Adelaide, Adelaide, SA, Australia
| | - J Delhove
- Respiratory and Sleep Medicine, Women's and Children's Hospital, Adelaide, SA, Australia.,Robinson Research Institute, University of Adelaide, Adelaide, SA, Australia.,Adelaide Medical School, University of Adelaide, Adelaide, SA, Australia
| | - M Donnelley
- Respiratory and Sleep Medicine, Women's and Children's Hospital, Adelaide, SA, Australia.,Robinson Research Institute, University of Adelaide, Adelaide, SA, Australia.,Adelaide Medical School, University of Adelaide, Adelaide, SA, Australia
| | - D Parsons
- Respiratory and Sleep Medicine, Women's and Children's Hospital, Adelaide, SA, Australia.,Robinson Research Institute, University of Adelaide, Adelaide, SA, Australia.,Adelaide Medical School, University of Adelaide, Adelaide, SA, Australia
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7
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Mostafizar M, Cortes-Pérez C, Snow W, Djordjevic J, Adlimoghaddam A, Albensi BC. Challenges with Methods for Detecting and Studying the Transcription Factor Nuclear Factor Kappa B (NF-κB) in the Central Nervous System. Cells 2021; 10:1335. [PMID: 34071243 PMCID: PMC8228352 DOI: 10.3390/cells10061335] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2021] [Revised: 05/18/2021] [Accepted: 05/20/2021] [Indexed: 01/01/2023] Open
Abstract
The transcription factor nuclear factor kappa B (NF-κB) is highly expressed in almost all types of cells. NF-κB is involved in many complex biological processes, in particular in immunity. The activation of the NF-κB signaling pathways is also associated with cancer, diabetes, neurological disorders and even memory. Hence, NF-κB is a central factor for understanding not only fundamental biological presence but also pathogenesis, and has been the subject of intense study in these contexts. Under healthy physiological conditions, the NF-κB pathway promotes synapse growth and synaptic plasticity in neurons, while in glia, NF-κB signaling can promote pro-inflammatory responses to injury. In addition, NF-κB promotes the maintenance and maturation of B cells regulating gene expression in a majority of diverse signaling pathways. Given this, the protein plays a predominant role in activating the mammalian immune system, where NF-κB-regulated gene expression targets processes of inflammation and host defense. Thus, an understanding of the methodological issues around its detection for localization, quantification, and mechanistic insights should have a broad interest across the molecular neuroscience community. In this review, we summarize the available methods for the proper detection and analysis of NF-κB among various brain tissues, cell types, and subcellular compartments, using both qualitative and quantitative methods. We also summarize the flexibility and performance of these experimental methods for the detection of the protein, accurate quantification in different samples, and the experimental challenges in this regard, as well as suggestions to overcome common challenges.
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Affiliation(s)
- Marina Mostafizar
- Division of Neurodegenerative Disorders, St. Boniface Hospital Research, Winnipeg, MB R2H 2A6, Canada; (M.M.); (C.C.-P.); (W.S.); (J.D.); (A.A.)
| | - Claudia Cortes-Pérez
- Division of Neurodegenerative Disorders, St. Boniface Hospital Research, Winnipeg, MB R2H 2A6, Canada; (M.M.); (C.C.-P.); (W.S.); (J.D.); (A.A.)
| | - Wanda Snow
- Division of Neurodegenerative Disorders, St. Boniface Hospital Research, Winnipeg, MB R2H 2A6, Canada; (M.M.); (C.C.-P.); (W.S.); (J.D.); (A.A.)
| | - Jelena Djordjevic
- Division of Neurodegenerative Disorders, St. Boniface Hospital Research, Winnipeg, MB R2H 2A6, Canada; (M.M.); (C.C.-P.); (W.S.); (J.D.); (A.A.)
| | - Aida Adlimoghaddam
- Division of Neurodegenerative Disorders, St. Boniface Hospital Research, Winnipeg, MB R2H 2A6, Canada; (M.M.); (C.C.-P.); (W.S.); (J.D.); (A.A.)
| | - Benedict C. Albensi
- Division of Neurodegenerative Disorders, St. Boniface Hospital Research, Winnipeg, MB R2H 2A6, Canada; (M.M.); (C.C.-P.); (W.S.); (J.D.); (A.A.)
- Department of Pharmacology and Therapeutics, Max Rady College of Medicine, University of Manitoba, Winnipeg, MB R2H 2A6, Canada
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8
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Jansons J, Skrastina D, Kurlanda A, Petkov S, Avdoshina D, Kuzmenko Y, Krotova O, Trofimova O, Gordeychuk I, Sominskaya I, Isaguliants M. Reciprocal Inhibition of Immunogenic Performance in Mice of Two Potent DNA Immunogens Targeting HCV-Related Liver Cancer. Microorganisms 2021; 9:1073. [PMID: 34067686 DOI: 10.3390/microorganisms9051073] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2021] [Revised: 05/07/2021] [Accepted: 05/12/2021] [Indexed: 11/29/2022] Open
Abstract
Chronic HCV infection and associated liver cancer impose a heavy burden on the healthcare system. Direct acting antivirals eliminate HCV, unless it is drug resistant, and partially reverse liver disease, but they cannot cure HCV-related cancer. A possible remedy could be a multi-component immunotherapeutic vaccine targeting both HCV-infected and malignant cells, but also those not infected with HCV. To meet this need we developed a two-component DNA vaccine based on the highly conserved core protein of HCV to target HCV-infected cells, and a renowned tumor-associated antigen telomerase reverse transcriptase (TERT) based on the rat TERT, to target malignant cells. Their synthetic genes were expression-optimized, and HCV core was truncated after aa 152 (Core152opt) to delete the domain interfering with immunogenicity. Core152opt and TERT DNA were highly immunogenic in BALB/c mice, inducing IFN-γ/IL-2/TNF-α response of CD4+ and CD8+ T cells. Additionally, DNA-immunization with TERT enhanced cellular immune response against luciferase encoded by a co-delivered plasmid (Luc DNA). However, DNA-immunization with Core152opt and TERT mix resulted in abrogation of immune response against both components. A loss of bioluminescence signal after co-delivery of TERT and Luc DNA into mice indicated that TERT affects the in vivo expression of luciferase directed by the immediate early cytomegalovirus and interferon-β promoters. Panel of mutant TERT variants was created and tested for their expression effects. TERT with deleted N-terminal nucleoli localization signal and mutations abrogating telomerase activity still suppressed the IFN-β driven Luc expression, while the inactivated reverse transcriptase domain of TERT and its analogue, enzymatically active HIV-1 reverse transcriptase, exerted only weak suppressive effects, implying that suppression relied on the presence of the full-length/nearly full-length TERT, but not its enzymatic activity. The effect(s) could be due to interference of the ectopically expressed xenogeneic rat TERT with biogenesis of mRNA, ribosomes and protein translation in murine cells, affecting the expression of immunogens. HCV core can aggravate this effect, leading to early apoptosis of co-expressing cells, preventing the induction of immune response.
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9
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Counsell JR, De Brabandere G, Karda R, Moore M, Greco A, Bray A, Diaz JA, Perocheau DP, Mock U, Waddington SN. Re-structuring lentiviral vectors to express genomic RNA via cap-dependent translation. Mol Ther Methods Clin Dev 2021; 20:357-365. [PMID: 33553484 PMCID: PMC7838728 DOI: 10.1016/j.omtm.2020.12.005] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/06/2020] [Accepted: 12/01/2020] [Indexed: 11/28/2022]
Abstract
Lentiviral (LV) vectors based on human immunodeficiency virus type I (HIV-1) package two copies of their single-stranded RNA into vector particles. Normally, this RNA genome is reverse transcribed into a double-stranded DNA provirus that integrates into the cell genome, providing permanent gene transfer and long-term expression. Integration-deficient LV vectors have been developed to reduce the frequency of genomic integration and thereby limit their persistence in dividing cells. Here, we describe optimization of a reverse-transcriptase-deficient LV vector, which enables direct translation of LV RNA genomes upon cell entry, for transient expression of vector payloads as mRNA without a DNA intermediate. We have engineered a novel LV genome arrangement in which HIV-1 sequences are removed from the 5' end, to enable ribosomal entry from the 5' 7-methylguanylate cap for efficient translation of the vector payload. We have shown that this LV-mediated mRNA delivery platform provides transient transgene expression in vitro and in vivo. This has a potential application in gene and cell therapy scenarios requiring temporary payload expression in cells and tissues that can be targeted with pseudotyped LV vectors.
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Affiliation(s)
- John R Counsell
- Dubowitz Neuromuscular Centre, Molecular Neurosciences Section, Developmental Neurosciences Programme, UCL Great Ormond Street Institute of Child Health, 30 Guilford Street, London, UK.,NIHR Great Ormond Street Hospital Biomedical Research Centre, 30 Guilford Street, London WC1N 1EH, UK
| | - Guillaume De Brabandere
- Dubowitz Neuromuscular Centre, Molecular Neurosciences Section, Developmental Neurosciences Programme, UCL Great Ormond Street Institute of Child Health, 30 Guilford Street, London, UK.,NIHR Great Ormond Street Hospital Biomedical Research Centre, 30 Guilford Street, London WC1N 1EH, UK
| | - Rajvinder Karda
- Gene Transfer Technology Group, Institute for Women's Health, University College London, 86-96 Chenies Mews, London, UK
| | - Marc Moore
- Dubowitz Neuromuscular Centre, Molecular Neurosciences Section, Developmental Neurosciences Programme, UCL Great Ormond Street Institute of Child Health, 30 Guilford Street, London, UK.,NIHR Great Ormond Street Hospital Biomedical Research Centre, 30 Guilford Street, London WC1N 1EH, UK
| | - Antonio Greco
- Dubowitz Neuromuscular Centre, Molecular Neurosciences Section, Developmental Neurosciences Programme, UCL Great Ormond Street Institute of Child Health, 30 Guilford Street, London, UK.,NIHR Great Ormond Street Hospital Biomedical Research Centre, 30 Guilford Street, London WC1N 1EH, UK
| | - Alysha Bray
- Dubowitz Neuromuscular Centre, Molecular Neurosciences Section, Developmental Neurosciences Programme, UCL Great Ormond Street Institute of Child Health, 30 Guilford Street, London, UK.,NIHR Great Ormond Street Hospital Biomedical Research Centre, 30 Guilford Street, London WC1N 1EH, UK
| | - Juan Antinao Diaz
- Gene Transfer Technology Group, Institute for Women's Health, University College London, 86-96 Chenies Mews, London, UK
| | - Dany P Perocheau
- Gene Transfer Technology Group, Institute for Women's Health, University College London, 86-96 Chenies Mews, London, UK
| | - Ulrike Mock
- NIHR Great Ormond Street Hospital Biomedical Research Centre, 30 Guilford Street, London WC1N 1EH, UK
| | - Simon N Waddington
- Gene Transfer Technology Group, Institute for Women's Health, University College London, 86-96 Chenies Mews, London, UK.,MRC Antiviral Gene Therapy Research Unit, Faculty of Health Sciences, University of the Witswatersrand, Johannesburg, South Africa
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10
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Lorvellec M, Pellegata AF, Maestri A, Turchetta C, Alvarez Mediavilla E, Shibuya S, Jones B, Scottoni F, Perocheau DP, Cozmescu AC, Delhove JM, Kysh D, Gjinovci A, Counsell JR, Heywood WE, Mills K, McKay TR, De Coppi P, Gissen P. An In Vitro Whole-Organ Liver Engineering for Testing of Genetic Therapies. iScience 2020; 23:101808. [PMID: 33305175 PMCID: PMC7708813 DOI: 10.1016/j.isci.2020.101808] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2020] [Revised: 10/19/2020] [Accepted: 11/10/2020] [Indexed: 12/30/2022] Open
Abstract
Explosion of gene therapy approaches for treating rare monogenic and common liver disorders created an urgent need for disease models able to replicate human liver cellular environment. Available models lack 3D liver structure or are unable to survive in long-term culture. We aimed to generate and test a 3D culture system that allows long-term maintenance of human liver cell characteristics. The in vitro whole-organ "Bioreactor grown Artificial Liver Model" (BALM) employs a custom-designed bioreactor for long-term 3D culture of human induced pluripotent stem cells-derived hepatocyte-like cells (hiHEPs) in a mouse decellularized liver scaffold. Adeno-associated viral (AAV) and lentiviral (LV) vectors were introduced by intravascular injection. Substantial AAV and LV transgene expression in the BALM-grown hiHEPs was detected. Measurement of secreted proteins in the media allowed non-invasive monitoring of the system. We demonstrated that humanized whole-organ BALM is a valuable tool to generate pre-clinical data for investigational medicinal products.
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Affiliation(s)
- Maëlle Lorvellec
- MRC Laboratory for Molecular Cell Biology, University College London, London WC1E 6BT, UK
- Genetics and Genomic Medicine Department, Great Ormond Street Institute of Child Health, University College London, London WC1N 1EH, UK
| | - Alessandro Filippo Pellegata
- Developmental Biology and Cancer Research & Teaching Department, Stem Cells & Regenerative Medicine Section, Great Ormond Street Institute of Child Health, University College London, London WC1N 1EH, UK
| | - Alice Maestri
- MRC Laboratory for Molecular Cell Biology, University College London, London WC1E 6BT, UK
- Genetics and Genomic Medicine Department, Great Ormond Street Institute of Child Health, University College London, London WC1N 1EH, UK
| | - Chiara Turchetta
- Department of Chemistry, Materials and Chemical Engineering "Giulio Natta," Politecnico di Milano, Milan 20133, Italy
| | - Elena Alvarez Mediavilla
- Genetics and Genomic Medicine Department, Great Ormond Street Institute of Child Health, University College London, London WC1N 1EH, UK
| | - Soichi Shibuya
- Developmental Biology and Cancer Research & Teaching Department, Stem Cells & Regenerative Medicine Section, Great Ormond Street Institute of Child Health, University College London, London WC1N 1EH, UK
| | - Brendan Jones
- Developmental Biology and Cancer Research & Teaching Department, Stem Cells & Regenerative Medicine Section, Great Ormond Street Institute of Child Health, University College London, London WC1N 1EH, UK
| | - Federico Scottoni
- Developmental Biology and Cancer Research & Teaching Department, Stem Cells & Regenerative Medicine Section, Great Ormond Street Institute of Child Health, University College London, London WC1N 1EH, UK
| | - Dany P. Perocheau
- Genetics and Genomic Medicine Department, Great Ormond Street Institute of Child Health, University College London, London WC1N 1EH, UK
| | - Andrei Claudiu Cozmescu
- MRC Laboratory for Molecular Cell Biology, University College London, London WC1E 6BT, UK
- NIHR Great Ormond Street Hospital Biomedical Research Centre, University College London, London WC1N 1EH, UK
| | - Juliette M. Delhove
- Robinson Research Institute, University of Adelaide, Adelaide, SA, 5006, Australia
| | - Daniel Kysh
- MRC Laboratory for Molecular Cell Biology, University College London, London WC1E 6BT, UK
| | - Asllan Gjinovci
- MRC Laboratory for Molecular Cell Biology, University College London, London WC1E 6BT, UK
| | - John R. Counsell
- Dubowitz Neuromuscular Centre, Molecular Neurosciences Section, Developmental Neurosciences Programme, UCL Great Ormond Street Institute of Child Health, London WC1N 1EH, UK
| | - Wendy E. Heywood
- Genetics and Genomic Medicine Department, Great Ormond Street Institute of Child Health, University College London, London WC1N 1EH, UK
| | - Kevin Mills
- Genetics and Genomic Medicine Department, Great Ormond Street Institute of Child Health, University College London, London WC1N 1EH, UK
| | - Tristan R. McKay
- Centre for Bioscience, Manchester Metropolitan University, Manchester M1 5GD, UK
| | - Paolo De Coppi
- Developmental Biology and Cancer Research & Teaching Department, Stem Cells & Regenerative Medicine Section, Great Ormond Street Institute of Child Health, University College London, London WC1N 1EH, UK
| | - Paul Gissen
- MRC Laboratory for Molecular Cell Biology, University College London, London WC1E 6BT, UK
- Genetics and Genomic Medicine Department, Great Ormond Street Institute of Child Health, University College London, London WC1N 1EH, UK
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11
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Gosset P, Taupier G, Crégut O, Brazard J, Mély Y, Dorkenoo KD, Léonard J, Didier P. Excited-State Proton Transfer in Oxyluciferin and Its Analogues. J Phys Chem Lett 2020; 11:3653-3659. [PMID: 32310668 DOI: 10.1021/acs.jpclett.0c00839] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
One of the most characterized bioluminescent reactions involves the firefly luciferase that catalyzes the oxidation of the luciferin producing oxyluciferin in its first excited state. While relaxing to the ground state, oxyluciferin emits visible light with an emission maximum that can vary from green to red. Oxyluciferin exists under six different chemical forms resulting from a keto/enol tautomerization and the deprotonation of the phenol or enol moieties. The optical properties of each chemical form have been recently characterized by the investigations of a variety of oxyluciferin derivatives, indicating unresolved excited-state proton transfer (ESPT) reactions. In this work, femtosecond pump-probe spectroscopy and time-resolved fluorescence spectroscopy are used to investigate the picosecond kinetics of the ESPT reactions and demonstrate the excited state keto to enol conversion of oxyluciferin and its derivatives in aqueous buffer as a function of pH. A comprehensive photophysical scheme is provided describing the complex luminescence pathways of oxyluciferin in protic solution.
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Affiliation(s)
- Pauline Gosset
- Institut de Physique et de Chimie des Matériaux de Strasbourg, Université de Strasbourg, CNRS UMR 7504, Strasbourg, France
- Laboratoire de Bioimagerie et Pathologies, UMR 7021 CNRS, Université de Strasbourg, 67000 Strasbourg, France
| | - Grégory Taupier
- Institut de Physique et de Chimie des Matériaux de Strasbourg, Université de Strasbourg, CNRS UMR 7504, Strasbourg, France
| | - Olivier Crégut
- Institut de Physique et de Chimie des Matériaux de Strasbourg, Université de Strasbourg, CNRS UMR 7504, Strasbourg, France
| | - Johanna Brazard
- Institut de Physique et de Chimie des Matériaux de Strasbourg, Université de Strasbourg, CNRS UMR 7504, Strasbourg, France
| | - Yves Mély
- Laboratoire de Bioimagerie et Pathologies, UMR 7021 CNRS, Université de Strasbourg, 67000 Strasbourg, France
| | - Kokou-Dodzi Dorkenoo
- Institut de Physique et de Chimie des Matériaux de Strasbourg, Université de Strasbourg, CNRS UMR 7504, Strasbourg, France
| | - Jérémie Léonard
- Institut de Physique et de Chimie des Matériaux de Strasbourg, Université de Strasbourg, CNRS UMR 7504, Strasbourg, France
| | - Pascal Didier
- Laboratoire de Bioimagerie et Pathologies, UMR 7021 CNRS, Université de Strasbourg, 67000 Strasbourg, France
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12
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Karda R, Rahim AA, Wong AMS, Suff N, Diaz JA, Perocheau DP, Tijani M, Ng J, Baruteau J, Martin NP, Hughes M, Delhove JMKM, Counsell JR, Cooper JD, Henckaerts E, Mckay TR, Buckley SMK, Waddington SN. Generation of light-producing somatic-transgenic mice using adeno-associated virus vectors. Sci Rep 2020; 10:2121. [PMID: 32034258 PMCID: PMC7005886 DOI: 10.1038/s41598-020-59075-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2018] [Accepted: 01/21/2020] [Indexed: 01/05/2023] Open
Abstract
We have previously designed a library of lentiviral vectors to generate somatic-transgenic rodents to monitor signalling pathways in diseased organs using whole-body bioluminescence imaging, in conscious, freely moving rodents. We have now expanded this technology to adeno-associated viral vectors. We first explored bio-distribution by assessing GFP expression after neonatal intravenous delivery of AAV8. We observed widespread gene expression in, central and peripheral nervous system, liver, kidney and skeletal muscle. Next, we selected a constitutive SFFV promoter and NFκB binding sequence for bioluminescence and biosensor evaluation. An intravenous injection of AAV8 containing firefly luciferase and eGFP under transcriptional control of either element resulted in strong and persistent widespread luciferase expression. A single dose of LPS-induced a 10-fold increase in luciferase expression in AAV8-NFκB mice and immunohistochemistry revealed GFP expression in cells of astrocytic and neuronal morphology. Importantly, whole-body bioluminescence persisted up to 240 days. We have validated a novel biosensor technology in an AAV system by using an NFκB response element and revealed its potential to monitor signalling pathway in a non-invasive manner in a model of LPS-induced inflammation. This technology complements existing germline-transgenic models and may be applicable to other rodent disease models.
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Affiliation(s)
- Rajvinder Karda
- Gene Transfer Technology Group, Institute for Women's Health, University College London, London, UK
| | - Ahad A Rahim
- UCL School of Pharmacy, University College London, London, UK
| | - Andrew M S Wong
- Institute of Psychiatry, Psychology & Neuroscience, King's College London, London, UK
| | - Natalie Suff
- Gene Transfer Technology Group, Institute for Women's Health, University College London, London, UK
| | - Juan Antinao Diaz
- Gene Transfer Technology Group, Institute for Women's Health, University College London, London, UK
| | - Dany P Perocheau
- Gene Transfer Technology Group, Institute for Women's Health, University College London, London, UK
| | - Maha Tijani
- Gene Transfer Technology Group, Institute for Women's Health, University College London, London, UK
| | - Joanne Ng
- Gene Transfer Technology Group, Institute for Women's Health, University College London, London, UK
| | - Julien Baruteau
- Gene Transfer Technology Group, Institute for Women's Health, University College London, London, UK
| | - Nuria Palomar Martin
- Department of Infectious Diseases, School of Immunology and Microbial Sciences, King's College London, London, UK
| | - Michael Hughes
- UCL School of Pharmacy, University College London, London, UK
| | | | - John R Counsell
- Dubowitz Neuromuscular Centre, Molecular Neurosciences Section, Developmental Neurosciences Programme, UCL Great Ormond Street Institute of Child Health, London, UK
- NIHR Great Ormond Street Hospital Biomedical Research Centre, London, UK
| | - Jonathan D Cooper
- Institute of Psychiatry, Psychology & Neuroscience, King's College London, London, UK
- Department of Pediatrics, Washington University in St Louis, St Louis, MO, USA
| | - Els Henckaerts
- Department of Infectious Diseases, School of Immunology and Microbial Sciences, King's College London, London, UK
- Laboratory of Viral Cell Signalling and Therapeutics, Department of Cellular and Molecular Medicine and Department of Microbiology, Immunology and Transplantation, KU Leuven, 3000, Leuven, Belgium
| | - Tristan R Mckay
- Centre for Biomedicine, Manchester Metropolitan University, Manchester, UK
| | - Suzanne M K Buckley
- Gene Transfer Technology Group, Institute for Women's Health, University College London, London, UK.
| | - Simon N Waddington
- Gene Transfer Technology Group, Institute for Women's Health, University College London, London, UK
- Wits/SAMRC Antiviral Gene Therapy Research Unit, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa
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13
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Diaz JA, Geard A, FitzPatrick LM, Delhove JMKM, Buckley SMK, Waddington SN, McKay TR, Karda R. Continual Conscious Bioluminescent Imaging in Freely Moving Mice. Methods Mol Biol 2020; 2081:161-175. [PMID: 31721124 DOI: 10.1007/978-1-4939-9940-8_11] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/07/2024]
Abstract
In vivo bioluminescent imaging allows the detection of reporter gene expression in rodents in real time. Here we describe a novel technology whereby we can generate somatotransgenic rodents with the use of a viral vector carrying a luciferase transgene. We are able to achieve long term luciferase expression by a single injection of lentiviral or adeno-associated virus vectors to newborn mice. Further, we describe whole body bioluminescence imaging of conscious mice in a noninvasive manner, thus enforcing the 3R's (replacement, reduction, and refinement) of biomedical animal research.
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Affiliation(s)
- Juan Antinao Diaz
- Gene Transfer Technology Group, Institute for Women's Health, University College London, London, UK
| | - Amy Geard
- UCL School of Pharmacy, University College London, London, UK
- Wits/SAMRC Antiviral Gene Therapy Research Unit, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa
| | | | | | - Suzanne M K Buckley
- Gene Transfer Technology Group, Institute for Women's Health, University College London, London, UK
| | - Simon N Waddington
- Gene Transfer Technology Group, Institute for Women's Health, University College London, London, UK
- Wits/SAMRC Antiviral Gene Therapy Research Unit, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa
| | - Tristan R McKay
- Centre for Biomedicine, Manchester Metropolitan University, Manchester, UK
| | - Rajvinder Karda
- Gene Transfer Technology Group, Institute for Women's Health, University College London, London, UK.
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14
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Affiliation(s)
- Qing‐Bo Liu
- School of Materials Science and EngineeringKunming University of Science and Technology Kunming 650093 P. R. China
- Research Center for Analysis and MeasurementKunming University of Science and Technology Kunming 650093 P. R. China
- Analysis and Test Center of Yunnan Province Kunming 650093 P. R. China
| | - Yan Leng
- Faculty of Chemical EngineeringKunming University of Science and Technology Kunming 650093 P. R. China
| | - Shao‐Jun Huang
- Research Center for Analysis and MeasurementKunming University of Science and Technology Kunming 650093 P. R. China
- Analysis and Test Center of Yunnan Province Kunming 650093 P. R. China
| | - Chun‐Xia Liu
- Research Center for Analysis and MeasurementKunming University of Science and Technology Kunming 650093 P. R. China
- Analysis and Test Center of Yunnan Province Kunming 650093 P. R. China
| | - Xi‐Kun Yang
- Research Center for Analysis and MeasurementKunming University of Science and Technology Kunming 650093 P. R. China
- Analysis and Test Center of Yunnan Province Kunming 650093 P. R. China
| | - Ai‐Min Ren
- Institute of Theoretical ChemistryJilin University Changchun 130023 P. R. China
| | - Chun‐Gang Min
- School of Materials Science and EngineeringKunming University of Science and Technology Kunming 650093 P. R. China
- Research Center for Analysis and MeasurementKunming University of Science and Technology Kunming 650093 P. R. China
- Analysis and Test Center of Yunnan Province Kunming 650093 P. R. China
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15
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Bogen KT. Inflammation as a Cancer Co-Initiator: New Mechanistic Model Predicts Low/Negligible Risk at Noninflammatory Carcinogen Doses. Dose Response 2019; 17:1559325819847834. [PMID: 31205456 PMCID: PMC6537503 DOI: 10.1177/1559325819847834] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2018] [Revised: 04/07/2019] [Accepted: 04/09/2019] [Indexed: 01/10/2023] Open
Abstract
Linear-no-threshold (LNT) risk extrapolation has long been applied to estimate risks posed by low-level environmental carcinogen exposures, based on the 60-year-old multistage somatic mutation/clonal expansion (MSM) cancer theory. Recent evidence supports an alternative theory: Malignant tumors arise most efficiently from a stem cell that incurs requisite mutations and also is activated by inflammation to an epigenetically mediated and maintained state of adaptive hyperplasia (AH). This new inflammation-MSM (ISM) theory posits that inflammation-activated stem cells normally restricted to sites of injury-induced inflammation and tissue repair become uniquely susceptible to efficient carcinogenesis if normal post-inflammation AH termination is blocked by mutation. This theory posits that inflammation generally thus co-initiates cancer and transiently amplifies activated stem cells, implying that MSM theory (eg, the 2-stage stochastic "Moolgavkar, Venzon, Knudson [MVK]" model) is incomplete. Because inflammation dose-response typically is not LNT, the ISM theory predicts this is also true for most (perhaps all) carcinogens. The ISM (but not the MVK) model is shown to be consistent with recent data showing ∼100% carcinoma incidence (but not DNA adducts) in livers of rats exposed to aflatoxin B1 and was eliminated when that dose was co-administered with a highly potent anti-inflammatory agent. Experimental approaches to test ISM theory more robustly are discussed.
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16
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Karda R, Counsell JR, Karbowniczek K, Caproni LJ, Tite JP, Waddington SN. Production of lentiviral vectors using novel, enzymatically produced, linear DNA. Gene Ther 2019; 26:86-92. [PMID: 30643205 DOI: 10.1038/s41434-018-0056-1] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2018] [Revised: 11/27/2018] [Accepted: 12/05/2018] [Indexed: 11/08/2022]
Abstract
The manufacture of large quantities of high-quality DNA is a major bottleneck in the production of viral vectors for gene therapy. Touchlight Genetics has developed a proprietary abiological technology that addresses the major issues in commercial DNA supply. The technology uses 'rolling-circle' amplification to produce large quantities of concatameric DNA that is then processed to create closed linear double-stranded DNA by enzymatic digestion. This novel form of DNA, Doggybone™ DNA (dbDNA™), is structurally distinct from plasmid DNA. Here we compare lentiviral vectors production from dbDNA™ and plasmid DNA. Lentiviral vectors were administered to neonatal mice via intracerebroventricular injection. Luciferase expression was quantified in conscious mice continually by whole-body bioluminescent imaging. We observed long-term luciferase expression using dbDNA™-derived vectors, which was comparable to plasmid-derived lentivirus vectors. Here we have demonstrated that functional lentiviral vectors can be produced using the novel dbDNA™ configuration for delivery in vitro and in vivo. Importantly, this could enable lentiviral vector packaging of complex DNA sequences that have previously been incompatible with bacterial propagation systems, as dbDNA™ technology could circumvent such restrictions through its phi29-based rolling-circle amplification.
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17
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Heo H, Jo J, Jung JI, Han YM, Lee S, Kim SR, Kwon SH, Kim KN, Hwang BJ, Kee Y, Lee BD, Kang D, Her S. Improved dynamic monitoring of transcriptional activity during longitudinal analysis in the mouse brain. Biol Open 2019; 8:bio.037168. [PMID: 30341106 PMCID: PMC6361206 DOI: 10.1242/bio.037168] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
Bioluminescence imaging has proven to be a highly sensitive technique for assessing in vitro transcriptional activity toward understanding gene regulation patterns; however, application of this technique is limited for brain research. In particular, the poor spatiotemporal resolution is a major hurdle for monitoring the dynamic changes of transcriptional activity in specific regions of the brain during longitudinal analysis of living animals. To overcome this limitation, in this study, we modified a lentivirus-based luciferase glucocorticoid receptor (GR) reporter by inserting destabilizing sequence genes, and then the reporter was stereotaxically injected in the mouse infralimbic prefrontal cortex (IL-PFC). Using this strategy, we could successfully pin-point and monitor the dynamic changes in GR activity in IL-PFC during normal stress adaptation. The modified reporter showed a 1.5-fold increase in temporal resolution for monitoring GR activity compared to the control, with respect to the intra-individual coefficients of variation. This novel in vivo method has broad applications, as it is readily adaptable to different types of transcription factor arrays as well spanning wide target regions of the brain to other organs and tissues.
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Affiliation(s)
- Hwon Heo
- Western Seoul Center, Korea Basic Science Institute, Seoul 03759, South Korea
| | - Juyeong Jo
- Western Seoul Center, Korea Basic Science Institute, Seoul 03759, South Korea.,Department of Life Science, Ewha Womans University, Seoul 03760, South Korea
| | - Jae In Jung
- Western Seoul Center, Korea Basic Science Institute, Seoul 03759, South Korea
| | - Young-Min Han
- Western Seoul Center, Korea Basic Science Institute, Seoul 03759, South Korea
| | - Seongsoo Lee
- Western Seoul Center, Korea Basic Science Institute, Seoul 03759, South Korea
| | - Song Rae Kim
- Chuncheon Center, Korea Basic Science Institute, Chuncheon 24341, South Korea
| | - Seung-Hae Kwon
- Chuncheon Center, Korea Basic Science Institute, Chuncheon 24341, South Korea
| | - Kil-Nam Kim
- Chuncheon Center, Korea Basic Science Institute, Chuncheon 24341, South Korea
| | - Byung Joon Hwang
- Department of Molecular Bioscience, College of Biomedical Science, Kangwon National University, Chuncheon 24341, South Korea
| | - Yun Kee
- Division of Biomedical Convergence, College of Biomedical Science, Kangwon National University, Chuncheon 24341, South Korea
| | - Byoung Dae Lee
- Department of Physiology, School of Medicine, Kyung Hee University, Seoul, 02447, South Korea
| | - Dongmin Kang
- Department of Life Science, Ewha Womans University, Seoul 03760, South Korea
| | - Song Her
- Western Seoul Center, Korea Basic Science Institute, Seoul 03759, South Korea
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18
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Taylor A, Sharkey J, Plagge A, Wilm B, Murray P. Multicolour In Vivo Bioluminescence Imaging Using a NanoLuc-Based BRET Reporter in Combination with Firefly Luciferase. Contrast Media Mol Imaging 2018; 2018:2514796. [PMID: 30627058 DOI: 10.1155/2018/2514796] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/02/2018] [Revised: 09/18/2018] [Accepted: 10/03/2018] [Indexed: 12/18/2022]
Abstract
The ability to track the biodistribution and fate of multiple cell populations administered to rodents has the potential to facilitate the understanding of biological processes in a range of fields including regenerative medicine, oncology, and host/pathogen interactions. Bioluminescence imaging is an important tool for achieving this goal, but current protocols rely on systems that have poor sensitivity or require spectral decomposition. Here, we show that a bioluminescence resonance energy transfer reporter (BRET) based on NanoLuc and LSSmOrange in combination with firefly luciferase enables the unambiguous discrimination of two cell populations in vivo with high sensitivity. We insert each of these reporter genes into cells using lentiviral vectors and demonstrate the ability to monitor the cells' biodistribution under a wide range of administration conditions, including the venous or arterial route, and in different tissues including the brain, liver, kidneys, and tumours. Our protocol allows for the imaging of two cell populations in the same imaging session, facilitating the overlay of the signals and the identification of anatomical positions where they colocalise. Finally, we provide a method for postmortem confirmation of the presence of each cell population in excised organs.
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19
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Willadsen M, Chaise M, Yarovoy I, Zhang AQ, Parashurama N. Engineering molecular imaging strategies for regenerative medicine. Bioeng Transl Med 2018; 3:232-255. [PMID: 30377663 PMCID: PMC6195904 DOI: 10.1002/btm2.10114] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2018] [Revised: 08/30/2018] [Accepted: 09/01/2018] [Indexed: 12/15/2022] Open
Abstract
The reshaping of the world's aging population has created an urgent need for therapies for chronic diseases. Regenerative medicine offers a ray of hope, and its complex solutions include material, cellular, or tissue systems. We review basics of regenerative medicine/stem cells and describe how the field of molecular imaging, which is based on quantitative, noninvasive, imaging of biological events in living subjects, can be applied to regenerative medicine in order to interrogate tissues in innovative, informative, and personalized ways. We consider aspects of regenerative medicine for which molecular imaging will benefit. Next, genetic and nanoparticle-based cell imaging strategies are discussed in detail, with modalities like magnetic resonance imaging, optical imaging (near infra-red, bioluminescence), raman microscopy, and photoacoustic microscopy), ultrasound, computed tomography, single-photon computed tomography, and positron emission tomography. We conclude with a discussion of "next generation" molecular imaging strategies, including imaging host tissues prior to cell/tissue transplantation.
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Affiliation(s)
- Matthew Willadsen
- Department of Chemical and Biological Engineering University at Buffalo, State University of New York, Furnas Hall Buffalo New York 14228
| | - Marc Chaise
- Jacobs School of Medicine and Biomedical Sciences University at Buffalo State University of New York 955 Main St., Buffalo, New York 14203
| | - Iven Yarovoy
- Department of Chemical and Biological Engineering University at Buffalo, State University of New York, Furnas Hall Buffalo New York 14228
| | - An Qi Zhang
- Department of Chemical and Biological Engineering University at Buffalo, State University of New York, Furnas Hall Buffalo New York 14228
| | - Natesh Parashurama
- Department of Chemical and Biological Engineering University at Buffalo, State University of New York, Furnas Hall Buffalo New York 14228.,Department of Biomedical Engineering University at Buffalo, State University of New York, Bonner Hall Buffalo New York 14228.,Clinical and Translation Research Center (CTRC) University at Buffalo, State University of New York 875 Ellicott St., Buffalo, New York 14203
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20
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Eshghi A, Gaultney RA, England P, Brûlé S, Miras I, Sato H, Coburn J, Bellalou J, Moriarty TJ, Haouz A, Picardeau M. An extracellular Leptospira interrogans leucine-rich repeat protein binds human E- and VE-cadherins. Cell Microbiol 2018; 21:e12949. [PMID: 30171791 DOI: 10.1111/cmi.12949] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2018] [Revised: 08/20/2018] [Accepted: 08/24/2018] [Indexed: 01/07/2023]
Abstract
Pathogenic Leptospira bacteria are the causative agents of leptospirosis, a zoonotic disease affecting animals and humans worldwide. These pathogenic species have the ability to rapidly cross host tissue barriers by a yet unknown mechanism. A comparative analysis of pathogens and saprophytes revealed a higher abundance of genes encoding proteins with leucine-rich repeat (LRR) domains in the genomes of pathogens. In other bacterial pathogens, proteins with LRR domains have been shown to be involved in mediating host cell attachment and invasion. One protein from the pathogenic species Leptospira interrogans, LIC10831, has been previously analysed via X-ray crystallography, with findings suggesting it may be an important bacterial adhesin. Herein we show that LIC10831 elicits an antibody response in infected animals, is actively secreted by the bacterium, and binds human E- and VE-cadherins. These results provide biochemical and cellular evidences of LRR protein-mediated host-pathogen interactions and identify a new multireceptor binding protein from this infectious Leptospira species.
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Affiliation(s)
- Azad Eshghi
- Unité de Biologie des Spirochètes, Institut Pasteur, Paris, France.,University of Victoria - Genome British Columbia Proteomics Centre, Vancouver Island Technology Park, Victoria, British Columbia, Canada
| | | | - Patrick England
- Plate-forme de Biophysique Moléculaire, Institut Pasteur, CNRS-UMR 3528, Paris, France
| | - Sébastien Brûlé
- Plate-forme de Biophysique Moléculaire, Institut Pasteur, CNRS-UMR 3528, Paris, France
| | - Isabelle Miras
- Plate-forme de Cristallographie, Institut Pasteur, CNRS-UMR 3528, Paris, France
| | - Hiromi Sato
- Center for Infectious Disease Research, Department of Medicine (Division of Infectious Diseases), Medical College of Wisconsin, Milwaukee, Wisconsin, USA.,Department of Microbiology and Immunology, Medical College of Wisconsin, Milwaukee, Wisconsin, USA
| | - Jenifer Coburn
- Center for Infectious Disease Research, Department of Medicine (Division of Infectious Diseases), Medical College of Wisconsin, Milwaukee, Wisconsin, USA.,Department of Microbiology and Immunology, Medical College of Wisconsin, Milwaukee, Wisconsin, USA
| | - Jacques Bellalou
- Plate-forme de Protéines Recombinantes, Institut Pasteur, CNRS-UMR 3528, Paris, France
| | - Tara J Moriarty
- Faculty of Dentistry, University of Toronto, Toronto, Ontario, Canada.,Faculty of Medicine (Department of Laboratory Medicine and Pathobiology), University of Toronto, Toronto, Ontario, Canada
| | - Ahmed Haouz
- Plate-forme de Cristallographie, Institut Pasteur, CNRS-UMR 3528, Paris, France
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21
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Counsell JR, Karda R, Diaz JA, Carey L, Wiktorowicz T, Buckley SMK, Ameri S, Ng J, Baruteau J, Almeida F, de Silva R, Simone R, Lugarà E, Lignani G, Lindemann D, Rethwilm A, Rahim AA, Waddington SN, Howe SJ. Foamy Virus Vectors Transduce Visceral Organs and Hippocampal Structures following In Vivo Delivery to Neonatal Mice. Mol Ther Nucleic Acids 2018; 12:626-634. [PMID: 30081233 PMCID: PMC6082918 DOI: 10.1016/j.omtn.2018.07.006] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/01/2017] [Revised: 07/06/2018] [Accepted: 07/08/2018] [Indexed: 12/16/2022]
Abstract
Viral vectors are rapidly being developed for a range of applications in research and gene therapy. Prototype foamy virus (PFV) vectors have been described for gene therapy, although their use has mainly been restricted to ex vivo stem cell modification. Here we report direct in vivo transgene delivery with PFV vectors carrying reporter gene constructs. In our investigations, systemic PFV vector delivery to neonatal mice gave transgene expression in the heart, xiphisternum, liver, pancreas, and gut, whereas intracranial administration produced brain expression until animals were euthanized 49 days post-transduction. Immunostaining and confocal microscopy analysis of injected brains showed that transgene expression was highly localized to hippocampal architecture despite vector delivery being administered to the lateral ventricle. This was compared with intracranial biodistribution of lentiviral vectors and adeno-associated virus vectors, which gave a broad, non-specific spread through the neonatal mouse brain without regional localization, even when administered at lower copy numbers. Our work demonstrates that PFV can be used for neonatal gene delivery with an intracranial expression profile that localizes to hippocampal neurons, potentially because of the mitotic status of the targeted cells, which could be of use for research applications and gene therapy of neurological disorders.
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Affiliation(s)
- John R Counsell
- Gene Transfer Technology Group, EGA Institute for Women's Health, University College London, London WC1E 6HX, UK; Dubowitz Neuromuscular Centre, Molecular Neurosciences Section, Developmental Neurosciences Programme, UCL Great Ormond Street Institute of Child Health, 30 Guilford Street, London WC1N 1EH, UK; NIHR Great Ormond Street Hospital Biomedical Research Centre, 30 Guilford Street, London WC1N 1EH, UK
| | - Rajvinder Karda
- Gene Transfer Technology Group, EGA Institute for Women's Health, University College London, London WC1E 6HX, UK
| | - Juan Antinao Diaz
- Gene Transfer Technology Group, EGA Institute for Women's Health, University College London, London WC1E 6HX, UK
| | - Louise Carey
- Gene Transfer Technology Group, EGA Institute for Women's Health, University College London, London WC1E 6HX, UK
| | - Tatiana Wiktorowicz
- Universität Würzburg, Institut für Virologie und Immunbiologie, Versbacher Str. 7, 97078 Würzburg, Germany
| | - Suzanne M K Buckley
- Gene Transfer Technology Group, EGA Institute for Women's Health, University College London, London WC1E 6HX, UK
| | - Shima Ameri
- Gene Transfer Technology Group, EGA Institute for Women's Health, University College London, London WC1E 6HX, UK
| | - Joanne Ng
- Gene Transfer Technology Group, EGA Institute for Women's Health, University College London, London WC1E 6HX, UK
| | - Julien Baruteau
- Gene Transfer Technology Group, EGA Institute for Women's Health, University College London, London WC1E 6HX, UK
| | - Filipa Almeida
- Reta Lila Weston Institute and Department of Molecular Neuroscience, UCL Institute of Neurology, London WC1N 3BG, UK
| | - Rohan de Silva
- Reta Lila Weston Institute and Department of Molecular Neuroscience, UCL Institute of Neurology, London WC1N 3BG, UK
| | - Roberto Simone
- Reta Lila Weston Institute and Department of Molecular Neuroscience, UCL Institute of Neurology, London WC1N 3BG, UK
| | - Eleonora Lugarà
- Department of Clinical and Experimental Epilepsy, Queen Square House, UCL Institute of Neurology, London WC1N 3BG, UK
| | - Gabriele Lignani
- Department of Clinical and Experimental Epilepsy, Queen Square House, UCL Institute of Neurology, London WC1N 3BG, UK
| | - Dirk Lindemann
- Universität Würzburg, Institut für Virologie und Immunbiologie, Versbacher Str. 7, 97078 Würzburg, Germany; Institute of Virology, Technische Universität Dresden, Dresden, Germany; Center for Regenerative Therapies Dresden (CRTD), Technische Universität Dresden, Dresden, Germany
| | - Axel Rethwilm
- Universität Würzburg, Institut für Virologie und Immunbiologie, Versbacher Str. 7, 97078 Würzburg, Germany
| | - Ahad A Rahim
- Department of Pharmacology, UCL School of Pharmacy, University College London, London WC1N 1AX, UK
| | - Simon N Waddington
- Gene Transfer Technology Group, EGA Institute for Women's Health, University College London, London WC1E 6HX, UK; Wits/SAMRC Antiviral Gene Therapy Research Unit, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa.
| | - Steven J Howe
- Gene Transfer Technology Group, EGA Institute for Women's Health, University College London, London WC1E 6HX, UK
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22
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Min CG, Liu QB, Leng Y, Huang SJ, Liu CX, Yang XK, Ren AM, Pinto da Silva L. Development of firefly oxyluciferin derivatives as pH sensitive fluorescent Probes: A DFT/TDDFT study. COMPUT THEOR CHEM 2018. [DOI: 10.1016/j.comptc.2018.04.008] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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23
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Delhove JMKM, Karda R, Hawkins KE, FitzPatrick LM, Waddington SN, McKay TR. Bioluminescence Monitoring of Promoter Activity In Vitro and In Vivo. Methods Mol Biol 2018; 1651:49-64. [PMID: 28801899 DOI: 10.1007/978-1-4939-7223-4_5] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Abstract
The application of luciferase reporter genes to provide quantitative outputs for the activation of promoters is a well-established technique in molecular biology. Luciferase catalyzes an enzymatic reaction, which in the presence of the substrate luciferin produces photons of light relative to its molar concentration. The luciferase transgene can be genetically inserted at the first intron of a target gene to act as a surrogate for the gene's endogenous expression in cells and transgenic mice. Alternatively, promoter sequences can be excised and/or amplified from genomic sources or constructed de novo and cloned upstream of luciferase in an expression cassette transfected into cells. More recently, the development of synthetic promoters where the essential components of an RNA polymerase binding site and transcriptional start site are fused with various upstream regulatory sequences are being applied to drive reporter gene expression. We have developed a high-throughput cloning strategy to develop lentiviral luciferase reporters driven by transcription factor activated synthetic promoters. Lentiviruses integrate their payload cassette into the host cell genome, thereby facilitating the study of gene expression not only in the transduced cells but also within all subsequent daughter cells. In this manuscript we describe the design, vector construction, lentiviral transduction, and luciferase quantitation of transcription factor activated reporters (TFARs) in vitro and in vivo.
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Affiliation(s)
- Juliette M K M Delhove
- Cardiovascular and Cell Sciences Research Institute, St. George's University of London, Cranmer Terrace, London, SW17 0RE2, UK.,Wits/SAMRC Antiviral Gene Therapy Research Unit, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa
| | - Rajvinder Karda
- Gene Transfer Technology Group, Institute for Women's Health, University College London, 86-96 Chenies Mews, London, WC1E 6HX, UK
| | - Kate E Hawkins
- Cardiovascular and Cell Sciences Research Institute, St. George's University of London, Cranmer Terrace, London, SW17 0RE2, UK
| | - Lorna M FitzPatrick
- Cardiovascular and Cell Sciences Research Institute, St. George's University of London, Cranmer Terrace, London, SW17 0RE2, UK.,School of Healthcare Science, Manchester Metropolitan University, John Dalton Building, Chester Street, Manchester, M1 5GD, UK
| | - Simon N Waddington
- Wits/SAMRC Antiviral Gene Therapy Research Unit, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa.,Gene Transfer Technology Group, Institute for Women's Health, University College London, 86-96 Chenies Mews, London, WC1E 6HX, UK
| | - Tristan R McKay
- Cardiovascular and Cell Sciences Research Institute, St. George's University of London, Cranmer Terrace, London, SW17 0RE2, UK. .,School of Healthcare Science, Manchester Metropolitan University, John Dalton Building, Chester Street, Manchester, M1 5GD, UK.
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24
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FitzPatrick LM, Hawkins KE, Delhove JMKM, Fernandez E, Soldati C, Bullen LF, Nohturfft A, Waddington SN, Medina DL, Bolaños JP, McKay TR. NF-κB Activity Initiates Human ESC-Derived Neural Progenitor Cell Differentiation by Inducing a Metabolic Maturation Program. Stem Cell Reports 2018; 10:1766-81. [PMID: 29681545 DOI: 10.1016/j.stemcr.2018.03.015] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2017] [Revised: 03/19/2018] [Accepted: 03/20/2018] [Indexed: 12/17/2022] Open
Abstract
Human neural development begins at embryonic day 19 and marks the beginning of organogenesis. Neural stem cells in the neural tube undergo profound functional, morphological, and metabolic changes during neural specification, coordinated by a combination of exogenous and endogenous cues. The temporal cell signaling activities that mediate this process, during development and in the postnatal brain, are incompletely understood. We have applied gene expression studies and transcription factor-activated reporter lentiviruses during in vitro neural specification of human pluripotent stem cells. We show that nuclear factor κB orchestrates a multi-faceted metabolic program necessary for the maturation of neural progenitor cells during neurogenesis.
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25
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Abstract
Molecular functional imaging with optical reporter genes (both bioluminescence and fluorescence) is a rapidly evolving method that allows noninvasive, sensitive, real-time monitoring of many cellular events in live cells and whole organisms. These reporter genes with optical signatures when expressed from gene-specific promoters or Cis/Trans elements mimic the endogenous expression pattern without perturbing cellular physiology. With advanced recombinant molecular biology techniques, several strategies for optimal expression from constitutive or inducible, tissue-specific and weak promoters have been developed and used for dynamic and functional imaging. In this chapter, we provide an overview of the applications of this powerful technology for imaging gene expression in living cells and rodent models.
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Affiliation(s)
- Ajit Dhadve
- Imaging Cell Signaling & Therapeutics Lab, Tata Memorial Centre (TMC), Advanced Centre for Treatment, Research and Education in Cancer (ACTREC), Navi Mumbai, Maharashtra, India.,Homi Bhabha National Institute, Mumbai, Maharashtra, India
| | - Bhushan Thakur
- Imaging Cell Signaling & Therapeutics Lab, Tata Memorial Centre (TMC), Advanced Centre for Treatment, Research and Education in Cancer (ACTREC), Navi Mumbai, Maharashtra, India.,Homi Bhabha National Institute, Mumbai, India
| | - Pritha Ray
- Imaging Cell Signaling & Therapeutics Lab, Tata Memorial Centre (TMC), Advanced Centre for Treatment, Research and Education in Cancer (ACTREC), Navi Mumbai, Maharashtra, India. .,Homi Bhabha National Institute, Mumbai, India.
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26
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Karda R, Perocheau DP, Suff N, Ng J, Delhove JMKM, Buckley SMK, Richards S, Counsell JR, Hagberg H, Johnson MR, McKay TR, Waddington SN. Continual conscious bioluminescent imaging in freely moving somatotransgenic mice. Sci Rep 2017; 7:6374. [PMID: 28743959 DOI: 10.1038/s41598-017-06696-w] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2017] [Accepted: 06/20/2017] [Indexed: 12/31/2022] Open
Abstract
Luciferase bioimaging in living animals is increasingly being applied in many fields of biomedical research. Rodent imaging usually involves anaesthetising the animal during data capture, however, the biological consequences of anaesthesia have been largely overlooked. We have evaluated luciferase bioimaging in conscious, unrestrained mice after neonatal intracranial or intravascular administration of lentiviral, luciferase reporter cassettes (biosensors); we present real-time analyses from the first day of life to adulthood. Anaesthetics have been shown to exert both neurotoxic and neuroprotective effects during development and in models of brain injury. Mice subjected to bioimaging after neonatal intracranial or intravascular administration of biosensors, targeting the brain and liver retrospectively showed no significant difference in luciferase expression when conscious or unconscious throughout development. We applied conscious bioimaging to the assessment of NFκB and STAT3 transcription factor activated reporters during the earliest stages of development in living, unrestrained pups. Our data showed unique longitudinal activities for NFκB and STAT3 in the brain of conscious mice. Conscious bioimaging was applied to a neonatal mouse model of cerebral palsy (Hypoxic-Ischaemic Encephalopathy). Imaging of NFκB reporter before and after surgery showed a significant increase in luciferase expression, coinciding with secondary energy failure, in lesioned mice compared to controls.
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27
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Suff N, Waddington SN. The power of bioluminescence imaging in understanding host-pathogen interactions. Methods 2017; 127:69-78. [PMID: 28694065 DOI: 10.1016/j.ymeth.2017.07.001] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2017] [Revised: 06/12/2017] [Accepted: 07/03/2017] [Indexed: 01/06/2023] Open
Abstract
Infectious diseases are one of the leading causes of death worldwide. Modelling and understanding human infection is imperative to developing treatments to reduce the global burden of infectious disease. Bioluminescence imaging is a highly sensitive, non-invasive technique based on the detection of light, produced by luciferase-catalysed reactions. In the study of infectious disease, bioluminescence imaging is a well-established technique; it can be used to detect, localize and quantify specific immune cells, pathogens or immunological processes. This enables longitudinal studies in which the spectrum of the disease process and its response to therapies can be monitored. Light producing transgenic rodents are emerging as key tools in the study of host response to infection. Here, we review the strategies for identifying biological processes in vivo, including the technology of bioluminescence imaging and illustrate how this technique is shedding light on the host-pathogen relationship.
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Affiliation(s)
- Natalie Suff
- Gene Transfer Technology Group, Institute for Women's Health, University College London, 86-96 Chenies Mews, London WC1E 6HX, United Kingdom.
| | - Simon N Waddington
- Gene Transfer Technology Group, Institute for Women's Health, University College London, 86-96 Chenies Mews, London WC1E 6HX, United Kingdom
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28
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Peng Z, Han X, Li S, Al-Youbi AO, Bashammakh AS, El-Shahawi MS, Leblanc RM. Carbon dots: Biomacromolecule interaction, bioimaging and nanomedicine. Coord Chem Rev 2017. [DOI: 10.1016/j.ccr.2017.06.001] [Citation(s) in RCA: 229] [Impact Index Per Article: 32.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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29
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Vink CA, Counsell JR, Perocheau DP, Karda R, Buckley SMK, Brugman MH, Galla M, Schambach A, McKay TR, Waddington SN, Howe SJ. Eliminating HIV-1 Packaging Sequences from Lentiviral Vector Proviruses Enhances Safety and Expedites Gene Transfer for Gene Therapy. Mol Ther 2017; 25:1790-1804. [PMID: 28550974 PMCID: PMC5542766 DOI: 10.1016/j.ymthe.2017.04.028] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/25/2016] [Revised: 04/28/2017] [Accepted: 04/28/2017] [Indexed: 12/30/2022] Open
Abstract
Lentiviral vector genomic RNA requires sequences that partially overlap wild-type HIV-1 gag and env genes for packaging into vector particles. These HIV-1 packaging sequences constitute 19.6% of the wild-type HIV-1 genome and contain functional cis elements that potentially compromise clinical safety. Here, we describe the development of a novel lentiviral vector (LTR1) with a unique genomic structure designed to prevent transfer of HIV-1 packaging sequences to patient cells, thus reducing the total HIV-1 content to just 4.8% of the wild-type genome. This has been achieved by reconfiguring the vector to mediate reverse-transcription with a single strand transfer, instead of the usual two, and in which HIV-1 packaging sequences are not copied. We show that LTR1 vectors offer improved safety in their resistance to remobilization in HIV-1 particles and reduced frequency of splicing into human genes. Following intravenous luciferase vector administration to neonatal mice, LTR1 sustained a higher level of liver transgene expression than an equivalent dose of a standard lentivirus. LTR1 vectors produce reverse-transcription products earlier and start to express transgenes significantly quicker than standard lentiviruses after transduction. Finally, we show that LTR1 is an effective lentiviral gene therapy vector as demonstrated by correction of a mouse hemophilia B model.
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Affiliation(s)
- Conrad A Vink
- Molecular and Cellular Immunology, UCL Great Ormond Street Institute of Child Health, 30 Guilford Street, London WC1N 1EH, UK
| | - John R Counsell
- Molecular and Cellular Immunology, UCL Great Ormond Street Institute of Child Health, 30 Guilford Street, London WC1N 1EH, UK; Gene Transfer Technology Group, Institute for Women's Health, University College London, 86-96 Chenies Mews, London WC1E 6HX, UK.
| | - Dany P Perocheau
- Gene Transfer Technology Group, Institute for Women's Health, University College London, 86-96 Chenies Mews, London WC1E 6HX, UK
| | - Rajvinder Karda
- Gene Transfer Technology Group, Institute for Women's Health, University College London, 86-96 Chenies Mews, London WC1E 6HX, UK
| | - Suzanne M K Buckley
- Gene Transfer Technology Group, Institute for Women's Health, University College London, 86-96 Chenies Mews, London WC1E 6HX, UK
| | - Martijn H Brugman
- Department of Immunohematology and Blood Transfusion, Leiden University Medical Center, 2300 RC Leiden, the Netherlands
| | - Melanie Galla
- Institute of Experimental Hematology, Hannover Medical School, 30625 Hannover, Germany
| | - Axel Schambach
- Institute of Experimental Hematology, Hannover Medical School, 30625 Hannover, Germany
| | - Tristan R McKay
- School of Healthcare Science, John Dalton Building, Manchester Metropolitan University, Chester Street, Manchester M15 6BH, UK
| | - Simon N Waddington
- Gene Transfer Technology Group, Institute for Women's Health, University College London, 86-96 Chenies Mews, London WC1E 6HX, UK; MRC Antiviral Gene Therapy Research Unit, Faculty of Health Sciences, University of the Witswatersrand, Johannesburg 2000, South Africa
| | - Steven J Howe
- Molecular and Cellular Immunology, UCL Great Ormond Street Institute of Child Health, 30 Guilford Street, London WC1N 1EH, UK; Gene Transfer Technology Group, Institute for Women's Health, University College London, 86-96 Chenies Mews, London WC1E 6HX, UK
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30
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Delhove JMKM, Buckley SMK, Perocheau DP, Karda R, Arbuthnot P, Henderson NC, Waddington SN, McKay TR. Longitudinal in vivo bioimaging of hepatocyte transcription factor activity following cholestatic liver injury in mice. Sci Rep 2017; 7:41874. [PMID: 28157201 PMCID: PMC5291111 DOI: 10.1038/srep41874] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2016] [Accepted: 12/28/2016] [Indexed: 01/09/2023] Open
Abstract
Molecular mechanisms regulating liver repair following cholestatic injury remain largely unknown. We have combined a mouse model of acute cholestatic liver injury, partial bile duct ligation (pBDL), with a novel longitudinal bioimaging methodology to quantify transcription factor activity during hepatic injury and repair. We administered lentiviral transcription factor activated luciferase/eGFP reporter (TFAR) cassettes to neonatal mice enabling longitudinal TFAR profiling by continued bioimaging throughout the lives of the animals and following pBDL in adulthood. Neonatal intravascular injection of VSV-G pseudotyped lentivirus resulted in almost exclusive transduction of hepatocytes allowing analysis of hepatocyte-specific transcription factor activity. We recorded acute but transient responses with NF-κB and Smad2/3 TFAR whilst our Notch reporter was repressed over the 40 days of evaluation post-pBDL. The bipotent hepatic progenitor cell line, HepaRG, can be directed to differentiate into hepatocytes and biliary epithelia. We found that forced expression of the Notch inhibitor NUMB in HepaRG resulted in enhanced hepatocyte differentiation and proliferation whereas over-expressing the Notch agonist JAG1 resulted in biliary epithelial differentiation. In conclusion, our data demonstrates that hepatocytes rapidly upregulate NF-κB and Smad2/3 activity, whilst repressing Notch signalling. This transcriptional response to cholestatic liver injury likely promotes partial de-differentiation to allow pro-regenerative proliferation of hepatocytes.
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Affiliation(s)
- Juliette M K M Delhove
- Stem Cell Group, Cardiovascular &Cell Sciences Research Institute, St. George's University of London, Cranmer Terrace, London SW17 0RE, UK.,Wits/SAMRC Antiviral Gene Therapy Research Unit, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa
| | - Suzanne M K Buckley
- Gene Transfer Technology Group, Institute for Women's Health, University College London, 86-96 Chenies Mews, London WC1E 6HX, UK
| | - Dany P Perocheau
- Gene Transfer Technology Group, Institute for Women's Health, University College London, 86-96 Chenies Mews, London WC1E 6HX, UK
| | - Rajvinder Karda
- Gene Transfer Technology Group, Institute for Women's Health, University College London, 86-96 Chenies Mews, London WC1E 6HX, UK
| | - Patrick Arbuthnot
- Wits/SAMRC Antiviral Gene Therapy Research Unit, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa
| | - Neil C Henderson
- MRC Centre for Inflammation Research, The Queens Medical Research Institute, University of Edinburgh, Edinburgh EH16 4TJ, U.K
| | - Simon N Waddington
- Gene Transfer Technology Group, Institute for Women's Health, University College London, 86-96 Chenies Mews, London WC1E 6HX, UK.,Wits/SAMRC Antiviral Gene Therapy Research Unit, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa
| | - Tristan R McKay
- Stem Cell Group, Cardiovascular &Cell Sciences Research Institute, St. George's University of London, Cranmer Terrace, London SW17 0RE, UK.,School of Healthcare Sciences, Manchester Metropolitan University, Chester Street, Manchester M1 5GD, U.K
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Teasdale JE, Hazell GGJ, Peachey AMG, Sala-Newby GB, Hindmarch CCT, McKay TR, Bond M, Newby AC, White SJ. Cigarette smoke extract profoundly suppresses TNFα-mediated proinflammatory gene expression through upregulation of ATF3 in human coronary artery endothelial cells. Sci Rep 2017; 7:39945. [PMID: 28059114 PMCID: PMC5216376 DOI: 10.1038/srep39945] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2016] [Accepted: 11/29/2016] [Indexed: 12/15/2022] Open
Abstract
Endothelial dysfunction caused by the combined action of disturbed flow, inflammatory mediators and oxidants derived from cigarette smoke is known to promote coronary atherosclerosis and increase the likelihood of myocardial infarctions and strokes. Conversely, laminar flow protects against endothelial dysfunction, at least in the initial phases of atherogenesis. We studied the effects of TNFα and cigarette smoke extract on human coronary artery endothelial cells under oscillatory, normal laminar and elevated laminar shear stress for a period of 72 hours. We found, firstly, that laminar flow fails to overcome the inflammatory effects of TNFα under these conditions but that cigarette smoke induces an anti-oxidant response that appears to reduce endothelial inflammation. Elevated laminar flow, TNFα and cigarette smoke extract synergise to induce expression of the transcriptional regulator activating transcription factor 3 (ATF3), which we show by adenovirus driven overexpression, decreases inflammatory gene expression independently of activation of nuclear factor-κB. Our results illustrate the importance of studying endothelial dysfunction in vitro over prolonged periods. They also identify ATF3 as an important protective factor against endothelial dysfunction. Modulation of ATF3 expression may represent a novel approach to modulate proinflammatory gene expression and open new therapeutic avenues to treat proinflammatory diseases.
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Affiliation(s)
- Jack E. Teasdale
- School of Clinical Sciences, University of Bristol, Bristol Royal Infirmary, Bristol, BS2 8HW, UK
| | - Georgina G. J. Hazell
- School of Clinical Sciences, University of Bristol, Bristol Royal Infirmary, Bristol, BS2 8HW, UK
| | - Alasdair M. G. Peachey
- School of Clinical Sciences, University of Bristol, Bristol Royal Infirmary, Bristol, BS2 8HW, UK
| | - Graciela B. Sala-Newby
- School of Clinical Sciences, University of Bristol, Bristol Royal Infirmary, Bristol, BS2 8HW, UK
| | - Charles C. T. Hindmarch
- Department of Biomedical and Molecular Sciences, Queen’s University, Kingston, ON, Canada, K7L 3N6
- Department of Physiology, Faculty of Medicine, University of Malaya, 50603, Kuala Lumpur, Malaysia
| | - Tristan R. McKay
- School of Healthcare Sciences, Manchester Metropolitan University, Manchester M1 5GD, UK
| | - Mark Bond
- School of Clinical Sciences, University of Bristol, Bristol Royal Infirmary, Bristol, BS2 8HW, UK
| | - Andrew C. Newby
- School of Clinical Sciences, University of Bristol, Bristol Royal Infirmary, Bristol, BS2 8HW, UK
| | - Stephen J. White
- School of Healthcare Sciences, Manchester Metropolitan University, Manchester M1 5GD, UK
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32
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Ioka S, Saitoh T, Maki SA, Imoto M, Nishiyama S. Development of a luminescence-controllable firefly luciferin analogue using selective enzymatic cyclization. Tetrahedron 2016. [DOI: 10.1016/j.tet.2016.09.069] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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33
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Angelici B, Mailand E, Haefliger B, Benenson Y. Synthetic Biology Platform for Sensing and Integrating Endogenous Transcriptional Inputs in Mammalian Cells. Cell Rep 2016; 16:2525-37. [PMID: 27545896 PMCID: PMC5009115 DOI: 10.1016/j.celrep.2016.07.061] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2016] [Revised: 06/19/2016] [Accepted: 07/22/2016] [Indexed: 11/02/2022] Open
Abstract
One of the goals of synthetic biology is to develop programmable artificial gene networks that can transduce multiple endogenous molecular cues to precisely control cell behavior. Realizing this vision requires interfacing natural molecular inputs with synthetic components that generate functional molecular outputs. Interfacing synthetic circuits with endogenous mammalian transcription factors has been particularly difficult. Here, we describe a systematic approach that enables integration and transduction of multiple mammalian transcription factor inputs by a synthetic network. The approach is facilitated by a proportional amplifier sensor based on synergistic positive autoregulation. The circuits efficiently transduce endogenous transcription factor levels into RNAi, transcriptional transactivation, and site-specific recombination. They also enable AND logic between pairs of arbitrary transcription factors. The results establish a framework for developing synthetic gene networks that interface with cellular processes through transcriptional regulators.
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Affiliation(s)
- Bartolomeo Angelici
- Department of Biosystems Science and Engineering, Swiss Federal Institute of Technology (ETH Zurich), Mattenstrasse 26, 4058 Basel, Switzerland
| | - Erik Mailand
- Department of Biosystems Science and Engineering, Swiss Federal Institute of Technology (ETH Zurich), Mattenstrasse 26, 4058 Basel, Switzerland
| | - Benjamin Haefliger
- Department of Biosystems Science and Engineering, Swiss Federal Institute of Technology (ETH Zurich), Mattenstrasse 26, 4058 Basel, Switzerland
| | - Yaakov Benenson
- Department of Biosystems Science and Engineering, Swiss Federal Institute of Technology (ETH Zurich), Mattenstrasse 26, 4058 Basel, Switzerland.
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34
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Wang B, Zhang Y, Cao W, Wei X, Chen J, Ying W. SIRT2 Plays Significant Roles in Lipopolysaccharides-Induced Neuroinflammation and Brain Injury in Mice. Neurochem Res 2016; 41:2490-500. [DOI: 10.1007/s11064-016-1981-2] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2016] [Revised: 04/18/2016] [Accepted: 04/22/2016] [Indexed: 01/01/2023]
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35
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Hawkins KE, Joy S, Delhove JMKM, Kotiadis VN, Fernandez E, Fitzpatrick LM, Whiteford JR, King PJ, Bolanos JP, Duchen MR, Waddington SN, McKay TR. NRF2 Orchestrates the Metabolic Shift during Induced Pluripotent Stem Cell Reprogramming. Cell Rep 2016; 14:1883-91. [PMID: 26904936 PMCID: PMC4785773 DOI: 10.1016/j.celrep.2016.02.003] [Citation(s) in RCA: 112] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2015] [Revised: 12/10/2015] [Accepted: 01/22/2016] [Indexed: 02/06/2023] Open
Abstract
The potential of induced pluripotent stem cells (iPSCs) in disease modeling and regenerative medicine is vast, but current methodologies remain inefficient. Understanding the cellular mechanisms underlying iPSC reprogramming, such as the metabolic shift from oxidative to glycolytic energy production, is key to improving its efficiency. We have developed a lentiviral reporter system to assay longitudinal changes in cell signaling and transcription factor activity in living cells throughout iPSC reprogramming of human dermal fibroblasts. We reveal early NF-κB, AP-1, and NRF2 transcription factor activation prior to a temporal peak in hypoxia inducible factor α (HIFα) activity. Mechanistically, we show that an early burst in oxidative phosphorylation and elevated reactive oxygen species generation mediates increased NRF2 activity, which in turn initiates the HIFα-mediated glycolytic shift and may modulate glucose redistribution to the pentose phosphate pathway. Critically, inhibition of NRF2 by KEAP1 overexpression compromises metabolic reprogramming and results in reduced efficiency of iPSC colony formation.
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Affiliation(s)
- Kate E Hawkins
- Stem Cell Group, Cardiovascular and Cell Sciences Research Institute, St. George's University of London, Cranmer Terrace, London SW17 0RE, UK.
| | - Shona Joy
- Stem Cell Group, Cardiovascular and Cell Sciences Research Institute, St. George's University of London, Cranmer Terrace, London SW17 0RE, UK; Department of Cell and Developmental Biology, University College London, Gower Street, London WC1E 6BT, UK
| | - Juliette M K M Delhove
- Stem Cell Group, Cardiovascular and Cell Sciences Research Institute, St. George's University of London, Cranmer Terrace, London SW17 0RE, UK; Wits/SAMRC Antiviral Gene Therapy Research Unit, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg 2000, South Africa; Gene Transfer Technology Group, Institute for Women's Health, University College London, 86-96 Chenies Mews, London WC1E 6HX, UK
| | - Vassilios N Kotiadis
- Department of Cell and Developmental Biology, University College London, Gower Street, London WC1E 6BT, UK
| | - Emilio Fernandez
- Institute of Functional Biology and Genomics, University of Salamanca-CSIC, 37007 Salamanca, Spain; Institute of Biomedical Research of Salamanca, University Hospital of Salamanca, 37007 Salamanca, Spain
| | - Lorna M Fitzpatrick
- Stem Cell Group, Cardiovascular and Cell Sciences Research Institute, St. George's University of London, Cranmer Terrace, London SW17 0RE, UK; School of Healthcare Science, John Dalton Building, Manchester Metropolitan University, Chester Street, Manchester M1 5GD, UK
| | - James R Whiteford
- William Harvey Research Institute, Charterhouse Square, Queen Mary University of London, London EC1M 6BQ, UK
| | - Peter J King
- William Harvey Research Institute, Charterhouse Square, Queen Mary University of London, London EC1M 6BQ, UK
| | - Juan P Bolanos
- Institute of Functional Biology and Genomics, University of Salamanca-CSIC, 37007 Salamanca, Spain; Institute of Biomedical Research of Salamanca, University Hospital of Salamanca, 37007 Salamanca, Spain
| | - Michael R Duchen
- Department of Cell and Developmental Biology, University College London, Gower Street, London WC1E 6BT, UK
| | - Simon N Waddington
- Wits/SAMRC Antiviral Gene Therapy Research Unit, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg 2000, South Africa; Gene Transfer Technology Group, Institute for Women's Health, University College London, 86-96 Chenies Mews, London WC1E 6HX, UK
| | - Tristan R McKay
- Stem Cell Group, Cardiovascular and Cell Sciences Research Institute, St. George's University of London, Cranmer Terrace, London SW17 0RE, UK; School of Healthcare Science, John Dalton Building, Manchester Metropolitan University, Chester Street, Manchester M1 5GD, UK.
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36
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Sun Z, Yin H, Yu X, Sun X, Xiao B, Xu Y, Yuan Z, Meng H, Peng J, Yu C, Wang Y, Guo Q, Wang A, Lu S. Inhibition of Osteoarthritis in Rats by Electroporation with Interleukin-1 Receptor Antagonist. ACTA ACUST UNITED AC 2016. [DOI: 10.4236/jbise.2016.97027] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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