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In vivo sickle cell just got a new backer... Tessera Therapeutics announced today they will receive up to $50 million in funding from the Bill &…
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We are seeking a scientist with an interest in process development to join our new GMP lentiviral vector production facility at the NHS Royal Free…
We are seeking a scientist with an interest in process development to join our new GMP lentiviral vector production facility at the NHS Royal Free…
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Transforming the future of AAV gene therapy! Explore how Rentschler Biopharma's innovative mass photometry approach is driving breakthroughs in…
Transforming the future of AAV gene therapy! Explore how Rentschler Biopharma's innovative mass photometry approach is driving breakthroughs in…
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Experience
Education
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Imperial College London
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Wellcome Trust funded PhD in the molecular and cellular basis of infection, carried out in Prof. M. McClure's laboratory.
My PhD project is on the use foamy virus vectors in gene therapy. I am targeting a group of inherited metabolic diseases, known as lysosomal storage disease, that affect infants. I have developed a novel approach combining gene therapy with mesenchymal stem cells (an adult stem cell available for autologous use).
I also work on improving understanding of how…Wellcome Trust funded PhD in the molecular and cellular basis of infection, carried out in Prof. M. McClure's laboratory.
My PhD project is on the use foamy virus vectors in gene therapy. I am targeting a group of inherited metabolic diseases, known as lysosomal storage disease, that affect infants. I have developed a novel approach combining gene therapy with mesenchymal stem cells (an adult stem cell available for autologous use).
I also work on improving understanding of how the permanent insertion of foamy viral DNA into the genome of infected cells is controlled. I have established the necessary protocol to efficiently isolate the active complex that performs this important step. -
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This year formed the 1st year of a 4-year Wellcome Trust PhD programme on the molecular and cellular basis of infection. The masters involved 3 lab projects in different fields, each requiring a written report and viva. My first project (molecular biology) was with Prof. Martin Buck where I used single molecule imaging and Western blotting to study the phage shock proteins in E. coli. Second (Immunology), I worked in Prof. Peter Openshaw's laboratory on the effect of IL-10 on RSV infection in…
This year formed the 1st year of a 4-year Wellcome Trust PhD programme on the molecular and cellular basis of infection. The masters involved 3 lab projects in different fields, each requiring a written report and viva. My first project (molecular biology) was with Prof. Martin Buck where I used single molecule imaging and Western blotting to study the phage shock proteins in E. coli. Second (Immunology), I worked in Prof. Peter Openshaw's laboratory on the effect of IL-10 on RSV infection in mice. Finally, my third project (Virology) was with Prof. Myra McClure on the use of foamy virus vectors for gene therapy targeting the retina.
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A University of Warwick degree in biological sciences is very molecular based with a focus on bacterial and viral pathogens. I chose to specialise in Virology after the first year, which meant that more of my lab work and essays were virology based. In my final year, I did an 8 week lab project with Dr. Keith Leppard on the effect of adenovirus infection on PML bodies, giving me my first experience of cell culture and further expertise in Western blotting techniques. This is also gave me…
A University of Warwick degree in biological sciences is very molecular based with a focus on bacterial and viral pathogens. I chose to specialise in Virology after the first year, which meant that more of my lab work and essays were virology based. In my final year, I did an 8 week lab project with Dr. Keith Leppard on the effect of adenovirus infection on PML bodies, giving me my first experience of cell culture and further expertise in Western blotting techniques. This is also gave me experience of different research settings (university vs research institute).
Publications
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The impact of lentiviral vector genome size and producer cell genomic to gag-pol mRNA ratios on packaging efficiency and titre
Molecular Therapy: Methods and Clinical Development
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Rapid Lentiviral Vector Producer Cell Line Generation Using a Single DNA Construct
Molecular Therapy: Methods and Clinical Development
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Delivery of large transgene cassettes by foamy virus vector
Nature, Scientific reports
Viral vectors are effective tools in gene therapy, but their limited packaging capacity can be restrictive. Larger clinically-relevant vectors are needed. Foamy viruses have the largest genomes among mammalian retroviruses and their vectors have shown potential for gene therapy in preclinical studies. However, the effect of vector genome size on titre has not been determined. We inserted increasing lengths of the dystrophin open reading frame in a foamy virus vector and quantified packaged…
Viral vectors are effective tools in gene therapy, but their limited packaging capacity can be restrictive. Larger clinically-relevant vectors are needed. Foamy viruses have the largest genomes among mammalian retroviruses and their vectors have shown potential for gene therapy in preclinical studies. However, the effect of vector genome size on titre has not been determined. We inserted increasing lengths of the dystrophin open reading frame in a foamy virus vector and quantified packaged vector RNA and integrated DNA. For both measures, a semi-logarithmic reduction in titre was observed as genome size increased. Concentrated titres were reduced 100-fold to approximately 106 transducing units per ml when vector genomes harboured a 12 kb insert, approximately twice that reported for lentivirus vectors in a comparable study. This potential was applied by optimising foamy virus vectors carrying the full-length dystrophin open-reading frame for transduction of human muscle derived cells. Full-length dystrophin protein was expressed and transduced cells remained able to form myotubes in vitro. Foamy virus vectors are well-suited for stable delivery of large transgene cassettes and warrant further investigation for development as a therapy for Duchenne or Becker muscular dystrophy.
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Rapid and efficient stable gene transfer to mesenchymal stromal cells using a modified foamy virus vector.
Molecular Therapy
Mesenchymal stromal cells (MSCs) hold great promise for regenerative medicine. Stable ex vivo gene transfer to MSCs could improve the outcome and scope of MSC therapy, but current vectors require multiple rounds of transduction, involve genotoxic viral promoters and/or the addition of cytotoxic cationic polymers in order to achieve efficient transduction. We describe a self-inactivating foamy virus vector (FVV), incorporating the simian macaque foamy virus envelope and using physiological…
Mesenchymal stromal cells (MSCs) hold great promise for regenerative medicine. Stable ex vivo gene transfer to MSCs could improve the outcome and scope of MSC therapy, but current vectors require multiple rounds of transduction, involve genotoxic viral promoters and/or the addition of cytotoxic cationic polymers in order to achieve efficient transduction. We describe a self-inactivating foamy virus vector (FVV), incorporating the simian macaque foamy virus envelope and using physiological promoters, which efficiently transduces murine MSCs (mMSCs) in a single-round. High and sustained expression of the transgene, whether GFP or the lysosomal enzyme, arylsulphatase A (ARSA), was achieved. Defining MSC characteristics (surface marker expression and differentiation potential), as well as long-term engraftment and distribution in the murine brain following intracerebroventricular delivery, are unaffected by FVV transduction. Similarly, greater than 95% of human MSCs (hMSCs) were stably transduced using the same vector, facilitating human application. This work describes the best stable gene transfer vector available for mMSCs and hMSCs.
Other authors -
Determination of sequences required for HERV-K transduction and its recognition by foreign retroviral virions.
J. Virol.
Sequences necessary for transduction of HERV-Kcon, a consensus of the HERV-K(HML-2) family were analysed and found to reside in the leader/gag region. They act in an orientation-dependent way and consist of at least two sites working together. Having defined these sequences, we exploited this information to produce a simple system to investigate to what extent virions of HERV-Kcon, MLV and HIV-1 have the ability to transduce each other's genomes, leading to potential contamination of gene…
Sequences necessary for transduction of HERV-Kcon, a consensus of the HERV-K(HML-2) family were analysed and found to reside in the leader/gag region. They act in an orientation-dependent way and consist of at least two sites working together. Having defined these sequences, we exploited this information to produce a simple system to investigate to what extent virions of HERV-Kcon, MLV and HIV-1 have the ability to transduce each other's genomes, leading to potential contamination of gene therapy vectors.
Other authorsSee publication
Honors & Awards
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Transformational medicine award
GSK
2020 Excellence Award for an 'outstanding contribution to R&D'
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Do not miss this insightful discussion! Learn more about the event and register here: https://lnkd.in/d6ty6NBs
Do not miss this insightful discussion! Learn more about the event and register here: https://lnkd.in/d6ty6NBs
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