functional photonics for single bioentities an application for a platform grant in biophotonics from...
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Functional Photonics for Single Bioentities
An application for a Platform Grant in Biophotonics
from the University of Surrey
Present today:Jeremy Allam
Professor of Ultrafast OptoelectronicsOverview Questions related to Photonics
JohnJoe McFaddenProfessor of Molecular Genetics
Questions related to biomedical aspects
David CareyEPSRC Advanced Research Fellow
Interdisciplinarity and nanotechnology
The Surrey Scene
School of Electronics & Physical Sciences (SEPS)
School of Biomedical and Molecular Sciences (SBMS)
Postgraduate Medical School (PGMS)
5* RAE rating Leading optoelectronics / photonics groupQueen’s Award 2002 for 20 year contributionExtensive Collaborations (Bookham Technology, Thales, IQE, Qinetiq, Infineon...)
5* RAE rating Leading early work on DNA probes for infectious diseasesExtensive collaborations with pharmaceutical companies (GlaxoSmithKline, Pharmacia/Pfizer, Xenova , AstraZenecca, Oxagen, Cyclacel …)
Formed 2000 to support health-related research
Link to NHS and clinicians (St George’s Hospital Medical School, Royal Surrey County Hospital)
Relevant Activities at Surrey
Oncology
Molecular toxicology
PharmacologyMolecular Genetics
Functional Genomics
Quantum Dots
Photonic Devices
Ultrafast photonics
Optical Spectroscopy
School of Electronics & Physical Sciences
School of Biomedical and Molecular Sciences
Postgraduate Medical School
Relevant Activities at Surrey
Oncology
Molecular toxicology
PharmacologyMolecular Genetics
Functional Genomics
Quantum Dots
Photonic Devices
Ultrafast photonics
Optical Spectroscopy
Oncology
Molecular toxicology
PharmacologyMolecular Genetics
Functional Genomics
Quantum Dots
Photonic Devices
Ultrafast photonics
Optical Spectroscopy
BiosensorsComputational biophotonics
Relevant Activities at Surrey
Co-applicants
Physicists
Biologists
ClinicianHelen Coley Oncology
Fiona Green Functional Genomics George Kass Molecular ToxicologyNick Plant Molecular ToxicologyJohnJoe McFadden Molecular GeneticsNick Toms Pharmacology
Jeremy Allam Femtosecond photonicsAleksey Andreev Quantum DotsDavid Carey Spectroscopy/MicroscopyOrtwin Hess Computational BiophotonicsStephen Sweeney Integrated biophotonic sensors
Sub Reddy Biosensors
University Support for Relevant Interdisciplinary
Research
Interdisciplinary Research Institutes:• Advanced Technology Institute
• £5M from JIF + £5M from UniS• incorporating photonics and electronics research • extensive new device fabrication facilities
• centre of excellence in Medical Research • opening March 2005 • to promote health related research and build University-NHS links
Infrastructure funding:• Functional Genomics Laboratory
• £2.3M from SRIF1• genomics and proteomics facilities
• Nano-bioelectronics facility • £3.8M from SRIF2 • nanofabrication, e.g. focussed ion beam,• surface plasmon resonance apparatus
+ staff recruitment ...
Biomedical Objectives
Our proposal is strongly focussed on important biomedical applications:
• Infectious disease diagnosis: detection and identification of pathogens
• Pharmacology: drug-receptor dynamics in health and disease
• Human genetics: genotyping and haplotyping
• DNA-conjugated or antibody-conjugated quantum dots coupled to direct detection of signal for single molecule detection.
• Multiplex quantum dots for parallel probing.
Molecular probesBiophotonic Solutions
Molecular probesThe SBMS Experience
commercialisation
1990
1987
1987
1990
1992
2004 – recent work
PCR-ELISA for diagnosis of meningococcal disease in blood
substrate
colourproduct
This or similar test widely used in clinical laboratories around the worldBUT
• takes 24-36 hours (too slow! - patients may die of meningitis within hours of first
symptoms)• can only be performed in specialist labs
Meningococcal DNA
Patient sample
PCR amplification
DNA extraction
enzyme
ELISA Plate hospitals like these!!
ELISA Plate
Scanner
Newcombe, … McFadden 1996 J.Clin.Microbiol. 34, 1637-1640
Quantum Dot ELISA-PCR for diagnosis of meningococcal
disease in blood
substrate
colourproduct
Compare with existing ELISA-PCR to benchmark quantum dot probes
Meningococcal DNA
Patient sample
PCR amplification
DNA extraction
ELISA Plate hospitals like these!!
ELISA Plate
Scanner
Quantum Dots
Quantum Dot diagnosis of meningococcal disease in blood
single molecule QD Detection
Meningococcal DNA
Patient sample
DNA extraction
Quantum Dotsdirect
Without PCR, the test should be much quicker and more easily applied in clinical labs
Quantum Dot multiplex detection of meningitis pathogens in blood
single molecule QD Detection
DNA
Patient sample
DNA extraction
Quantum Dotsdirect
Rapid identification of specific agent involved (there are many that cause meningitis), or detection of drug-resistance gene, may be vital for implementing appropriate treatment regime
Genetic Disease: Quantum dots for multiplex SNP genotyping
single molecule QD Detection
DNA
Patient sample
DNA extraction
Quantum Dotsdirect
Genotyping, for diagnosis or for research, may employ tens or even hundreds of different DNA probes
Genetic Disease: Quantum Dots for Haplotyping
or
FRET
?
Are genetic markers on the same or different chromosomes?
Functional QD Probes
• optical properties of QDs depend on electric field, molecular vibrations, orientation, proximity, etc, hence QDs as functional probes
• real-time spatio-temporal dynamics of biomolecular function
• We will calculate QD properties and hence design functional probes. Information will be supplied to collaborators for fabrication of the QDs
spatio-temporal imaging of neuronphotonic readout of rotary biomolecular motors, protein folding, etc
QD molecule
biomolecular motor
PBG optical waveguide
Nano-VCSEL Laser
Integrated Biophotonic Sensors
• Alternative approaches to high-sensitivity, multiplexed biophotonic sensors:• resonance condition for high sensitivity (e.g. dual-stripe mode-locked laser)• spatial readout • exploit bio-nano size match• ‘new’ operational modes e.g. photonic bandgaps (PBG)
Photonic Bandgap Biosensor
What it will mean for us
• exploit our existing research strengths in new directions
• fully exploit large investment in infrastructure and capital equipment
• help retain significant research staff
• support training of students in new interdisciplinary areas
• make an impact in an important emerging research field