Dr Divya M Chari

Title: Senior Lecturer in Physiological Sciences
Phone: +44 (0)1782 733314
Email:
Location: Huxley Building : 208
Role: ISTM research themes: 1. Bioengineering & Therapeutics 2. Neuroscience & Human Metabolism
Contacting me: Arrange appointment by email
chari divya

Employment History

Senior Lecturer, School of Medicine (Faculty of Health), Keele University (2011- )

  • Full Member, Cellular and Neural Engineering Group, Institute for Science & Technology in Medicine
  • Lead for Medical Intercalated Degrees
  • Co-Lead- INSPIRE medical research programme (supported by Academy of Medical Sciences and Wellcome Trust)
  • Scientific Lead for Neuroscience/Neurology unit of undergraduate medical curriculum

Lecturer, School of Medicine (Faculty of Health), Keele University (2007-11).

  • Full Research member, Institute for Science and Technology in Medicine, Keele University.

Junior Fellow-Multiple Sclerosis Society, UK, Cambridge Centre for Brain Repair and Veterinary Medicine, Cambridge University (2003-07)

Research Associate, Cambridge Centre for Brain Repair and Veterinary Medicine, Cambridge University (Wellcome Trust funded) (2000-03)

Education

D.Phil “Cell Genesis in Hamster Cortex”, Oxford University, Wadham College, 2000, funded by an international scholarship.

MSc Medical Physiology All India Institute of Medical Sciences (AIIMS), New Delhi, First Class, 1996

BSc (Hons) in Human Biology (Physiology) AIIMS, New Delhi, First Class, 1994

 

 

Research interests:

  1. Use of novel biomedical engineering strategies such as magnetic nanoparticles, nanopatterned surfaces and neural cell seeded polymer scaffolds to promote neural regeneration;

  2. Development of ex vivo tissue engineering models to evaluate the regeneration promoting effects of cell replacement;
  3. Investigation of the molecular effects of immunotherapies on developmental myelin genesis and remyelination

We collaborate widely and currently use a combination of methods for these studies including:

  • Isolated neural cell culture (primary cultures of neural stem cells, oligodendrocyte precursor cells, olfactory ensheathing cells, oligodendrocytes, astrocytes and neuronal cell lines)
  • Microarray, proteomic and bioinformatics analysis of drug and magnetic nanoparticle treated neural cells for safety testing (with Dr Richard Emes, Director Advanced Data Analysis centre, Nottingham University;  Dr Sarah Hart, Keele University.)
  • Evaluating effects of nanoscale topography on neural stem cell proliferation and differentiation (with Dr Matt Dalby and Dr Nikolaaj Gaadegard, Glasgow University Centre for Cell Engineering).
  • Development of in vitro neurological injury models in organotypic slice cultures, with electrophysiological recordings from regenerating nerve fibres (with Dr Michael Evans and Dr Stanislaw Glazewski, Keele University)
  • TEM to monitor intracellular nanoparticle fate, and development of novel, high throughput and high resolution SEM methods to examine stem cell-nanomaterial interactions (with Dr David Furness, Director, Keele University Electron Microscopy Unit)
  • Testing and characterising novel nanoparticles for labelling and gene delivery in stem cell transplant populations (with Dr Boris Polyak, Drexel University; Dr Humphrey Yiu, Heriot Watt University and Dr Vladimir Zholobenko, Keele University) used with state of the art static and oscillating field ‘magnetofection’ techniques
  • Mathematical modelling of the handling of synthetic materials by neural cell populations (with Dr Theocharis Kyriacou, School of Computing Science and Mathematics, Keele University).
  • In vivo models of CNS injury in the adult and neonatal brain and spinal cord (demyelination and transection) with cell transplantation

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MNP labelled, transplanted astrocytes integrated into organotypic cerebellar slice circuitry (image features as cover of Jan2011 issue – Tissue Engineering C).

Magnetofected neural stem cells expressing stem cell marker SOX2. Transfected, mitotic profiles are frequently seen (arrow) indicating ‘stem-ness’.

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Scanning electron micrograph of a microglial cell following ‘activation’ by nanoparticles.

Purified oligodendrocytes used for magnetic nanoparticle based transfection (image features as cover of June 2013  issue of nanoLife).

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Inheritance of nanoparticles by neuronal progeny of ‘magnetolabelled’ neural stem cells.

Extensive uptake and degradation of magnetic particles in microglial cells.

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Alignment of astrocytes along PLA nanofibres implanted over a 3D spinal cord slice lesion. 

Scanning electron micrograph of  a dividing oligodendrocyte precursor cell

  • Weightman AP, Pickard MR, Jenkins SI, Chari DM*,Yang YY. Alignment of Multiple Glial Cell Populations in 3D Nanofibre Scaffolds: Towards Development of Multicellular Implantable Scaffolds for Repair of Neural Injury. 2013. Nanomedicine: Nanotechnology, Biology, Medicine. In Press (*Joint senior author) 
  • Adams CF, Pickard MR, Chari DM. 2013. Magnetic nanoparticle mediated transfection of neural stem cell suspension cultures is enhanced by applied oscillating magnetic fields. Nanomedicine: Nanotechnology, Biology, and Medicine. In Press.
  • SI Jenkins, MR Pickard, DM Chari. 2013. Magnetic nanoparticle mediated gene delivery in oligodendroglial cells: A comparison of differentiated cells versus precursor forms. Nano LIFE, invited paper for special issue on Nanotechnology and Neuroengineering, Edited by Erkin Seker, UC Davies USA. In press.
  • Chari DM. Transcriptional effects of corticosteroid therapy on myelin genesis and neuronal health. Midlands Medicine. Vol 26 (3). April 2011
  • Putting the Nanoscience in Neuroscience: Magnetic attraction (Feature on research in the Chari laboratory). 2012. British Neuroscience Association Bulletin. Issue no 66, p12. http://www.bna.org.uk/about/bna-bulletin.html

Selected Publications

  • Jenkins SI, Pickard MR, Furness DN, Yiu HH, Chari DM. 2013. Differences in magnetic particle uptake by CNS neuroglial subclasses: implications for neural tissue engineering. Nanomedicine (Lond), vol. 8(6), 951-968. link> doi>
  • Yiu HH, Pickard MR, Olariu CI, Williams SR, Chari DM, Rosseinsky MJ. 2012. Fe3O4-PEI-RITC magnetic nanoparticles with imaging and gene transfer capability: development of a tool for neural cell transplantation therapies. Pharm Res, vol. 29(5), 1328-1343. link> doi>
  • Jenkins SI, Pickard MR, Granger N, Chari DM. 2011. Magnetic nanoparticle-mediated gene transfer to oligodendrocyte precursor cell transplant populations is enhanced by magnetofection strategies. ACS Nano, vol. 5(8), 6527-6538. link> doi>
  • Pickard MR, Barraud P, Chari DM. 2011. The transfection of multipotent neural precursor/stem cell transplant populations with magnetic nanoparticles. Biomaterials, vol. 32(9), 2274-2284. link> doi>
  • Pickard MR, Jenkins SI, Koller CJ, Furness DN, Chari DM. 2010. Magnetic Nanoparticle Labeling of Astrocytes Derived for Neural Transplantation. Tissue Eng Part C Methods. link> doi>

Full Publications List show

Journal Articles

  • Jenkins SI, Pickard MR, Furness DN, Yiu HH, Chari DM. 2013. Differences in magnetic particle uptake by CNS neuroglial subclasses: implications for neural tissue engineering. Nanomedicine (Lond), vol. 8(6), 951-968. link> doi>
  • Yiu HH, Pickard MR, Olariu CI, Williams SR, Chari DM, Rosseinsky MJ. 2012. Fe3O4-PEI-RITC magnetic nanoparticles with imaging and gene transfer capability: development of a tool for neural cell transplantation therapies. Pharm Res, vol. 29(5), 1328-1343. link> doi>
  • Jenkins SI, Pickard MR, Granger N, Chari DM. 2011. Magnetic nanoparticle-mediated gene transfer to oligodendrocyte precursor cell transplant populations is enhanced by magnetofection strategies. ACS Nano, vol. 5(8), 6527-6538. link> doi>
  • Pickard MR, Barraud P, Chari DM. 2011. The transfection of multipotent neural precursor/stem cell transplant populations with magnetic nanoparticles. Biomaterials, vol. 32(9), 2274-2284. link> doi>
  • Pickard MR, Jenkins SI, Koller CJ, Furness DN, Chari DM. 2010. Magnetic Nanoparticle Labeling of Astrocytes Derived for Neural Transplantation. Tissue Eng Part C Methods. link> doi>
  • Pickard MR and Chari DM. 2010. Robust uptake of magnetic nanoparticles (MNPs) by central nervous system (CNS) microglia: Implications for particle uptake in mixed neural cell populations. Int J Mol Sci, vol. 11(3), 967-981. link> doi>
  • Pickard M and Chari DM. 2010. Enhancement of magnetic nanoparticle-mediated gene transfer to astrocytes by `magnetofection': effects of static and oscillating fields. Nanomedicine, vol. 5(2), 217-232. doi>
  • Jeffery ND, McBain SC, Dobson J, Chari DM. 2009. Uptake of systemically administered magnetic nanoparticles (MNPs) in areas of experimental spinal cord injury (SCI). J Tissue Eng Regen Med, vol. 3(2), 153-157. link> doi>
  • Chari DM. 2007. Remyelination in multiple sclerosis. Int Rev Neurobiol, vol. 79, 589-620. link> doi>
  • CHARI DM, Blakemore WF, Kotter MR, Zhao C. 2006. Corticosteroids delay remyelination of experimental demyelination in the rodent central nervous system. Journal of Neuroscience Research, vol. 83(4), 594-605. doi>
  • Chari DM, Gilson JM, Franklin RJ, Blakemore WF. 2006. Oligodendrocyte progenitor cell (OPC) transplantation is unlikely to offer a means of preventing X-irradiation induced damage in the CNS. Exp Neurol, vol. 198(1), 145-153. link> doi>
  • Chari DM, Huang WL, Blakemore WF. 2003. Dysfunctional oligodendrocyte progenitor cell (OPC) populations may inhibit repopulation of OPC depleted tissue. J Neurosci Res, vol. 73(6), 787-793. link> doi>
  • CHARI DM, Blakemore WF, Crang AJ. 2003. Decline in rate of colonisation of Oligodendrocyte progenitor cell (OPC) depleted tissue by adult OPCs with age. J Neuropath Exp Neurol, vol. 62(9), 908-916. link>
  • Chari DM and Blakemore WF. 2002. New insights into remyelination failure in multiple sclerosis: implications for glial cell transplantation. Mult Scler, vol. 8(4), 271-277. link> doi>
  • Blakemore WF, Chari DM, Gilson JM, Crang AJ. 2002. Modelling large areas of demyelination in the rat reveals the potential and possible limitations of transplanted glial cells for remyelination in the CNS. Glia, vol. 38(2), 155-168. link> doi>
  • Chari DM and Blakemore WF. 2002. Efficient recolonisation of progenitor-depleted areas of the CNS by adult oligodendrocyte progenitor cells. GLIA, vol. 37(4), 307-313. link> doi>
  • Hinks GL, Chari DM, O'Leary MT, Zhao C, Keirstead HS, Blakemore WF, Franklin RJ. 2001. Depletion of endogenous oligodendrocyte progenitors rather than increased availability of survival factors is a likely explanation for enhanced survival of transplanted oligodendrocyte progenitors in X-irradiated compared to normal CNS. Neuropathol Appl Neurobiol, vol. 27(1), 59-67. link> doi>
  • Chari DM, Ramesh V, John J, Kumar VM. 1995. Effect of application of gamma amino butyric acid at the medial preoptic area on sleep-wakefulness. Indian J Physiol Pharmacol, vol. 39(3), 299-301. link>

Funding

2013 PhD studentship "Evaluating the effects of immunotherapies on precursor/stem cells of the central nervous system" Primary supervisor

2013 Clinical MPhil "Tracking nanoparticle inheritance in the progeny of labelled neural stem cell transplant populations for neuroimaging applications" Primary Supervisor

2012 PhD studentship "Evaluation of astrocyte interactions with nanomaterials" Primary supervisor

2012 EPSRC 3ME Initiative- Bridging the Gaps “Mathematical modelling of magnetic particle uptake in neural cell populations: Can we predict modes of particle handling in complex cell systems?” Principal Investigator

2012 BBSRC Project Grant “Magnetic nanoparticle mediated delivery of neurotherapeutic genes to multipotent neural stem cell transplant populations” Principal Investigator

2012 EPSRC E-TERM Landscape Fellowship "Magnetic nanoparticle based transfection of oligodendrocyte precursor cells for transplantation into a 'living brain' reductionist demyelination model", (www.regener8.ac.uk/)

2012 ISTM capital bid funding to purchase (1) Stereomicroscope with imaging system, (with ISTM neuroscience theme research scientists) ; and (2) Electrophysiology rig for electrical recordings from acute brain slices and organotypic slice culture injury models (with Dr David Mazzocchi Jones and Dr Mike Evans).

2011 MMed. Ed. project " A survey of intercalation at UK medical schools" Co-supervisor

2011 EPSRC Doctoral Training Centre PhD studentship “Strategies to enhance magnetic nanoparticle mediated delivery of therapeutic biomolecules to neural transplant populations ” Primary Supervisor

2010 North Staffordshire Medical Institute grant “Transcriptional effects of corticosteroid (CS) therapy on myelin genesis and neuronal health” Principal Investigator

2010 EPSRC Doctoral Training Centre PhD studentship “Development of Novel Tissue Engineering Strategies for Spinal Cord Repair” Primary Supervisor

2009 Royal Society UK research grant “Magnetic nanoparticle MNP mediated gene transfer to oligodendrocyte progenitor cells (OPCs) derived for transplantation” Principal Investigator

2008 United States National Multiple Sclerosis Society Pilot Award “Can magnetic nanoparticles be used to modulate gene expression in demyelinated areas?” Principal Investigator

2008 BBSRC New Investigator Award “Development of magnetic nanoparticle (MNP) based delivery system for gene transfer to multipotent neural precursor cells (NPCs)” Principal Investigator

2007 British Neuropathological Society Small Grant “Effects of corticosteroid (CS) administration on myelination in the developing central nervous system (CNS)” Principal Investigator

2007 Keele School of Medicine startup fund &PhD studentship “Applications of magnetic nanoparticles for oligodendrocyte precursor cell transplantation strategies” Primary Supervisor

2003 UK Multiple Sclerosis Society, Junior Research Fellowship (four-year) “Effects of corticosteroid administration on oligodendrocyte progenitor cells and remyelination”

1996 Felix Scholarship to undertake DPhil studies at Oxford University

ISTM research themes: 1. Bioengineering & Therapeutics 2. Neuroscience & Human Metabolism