‘biosensors – a key to our future health!’ · ‘biosensors – a key to our future...
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‘Biosensors – a key to our future health!’
Prof. Brian MacCraithDirector, BDI
Dublin City University (DCU)
FOBIS Biomedical Sensors Foresight WorkshopFOBIS Biomedical Sensors Foresight WorkshopStockholm, March 3Stockholm, March 3rdrd 20062006
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• Oct 1, 2005
• Focus on next-generation Biomedical Diagnostics
• Home-use & Point of Care
• €23m Investment
• Industry-Academic Partnership
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CALTESTSECINR
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OutlineOutline
• Background• BDI Vision• Examples• Trends• Recent Predictions from Expert Groups• Conclusions
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Global Healthcare ChallengeGlobal Healthcare Challenge
• Chronic diseases• Cardiovascular (CVD)• Cancer• Diabetes
• Increased life-expectancy
• Healthcare costs
8.009.37
11.11
0
2
4
6
8
10
12
2000 2010 2020
Coronary MortalityCoronary MortalityWorldwide Forecasts
2000 (million deaths)2000 (million deaths)
Forecast (million deaths)Forecast (million deaths)
World Health Organization
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BDI: A Vision of Future HealthBDI: A Vision of Future Health• Revolutionary diagnostic devices:
• Early warning of life-threatening events
• Control of chronic diseases
• Link therapy and monitoring
• ‘personalised medicine’
• theranostics
• Monitor well-being
• Self Test - Home Use
• Point of Care (POC) – Doctors’ surgeries…
‘‘keeping people out of hospitalkeeping people out of hospital…’…’
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Biomedical analysis & communication system
Disposable sample prep & bioassay chip
Biosensors + E-Health
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The The Challenge(sChallenge(s))
• Major scientific challenge
• Smart, rapid, miniature systems
• Low concentrations of Biomarkers
• Small volumes of complex fluids
• Sensitivity, reliability
• Integration of diverse technologies
• Ethics, adoption, cost, reimbursement…
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Examples: DiseasesExamples: Diseases
• Cardiovascular Disease• Diabetes• Colon Cancer
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Example: Cardiac Wellness BiochipExample: Cardiac Wellness Biochip
• Critical Problem:Accounts for 38% of all deaths (2004)
Significant impact on life quality and quantitySubstantial cost to healthcare system
• BDI Approach:Simple, low cost, early monitoring of cardiac ‘wellness’markersEarly intervention; lifestyle changesBetter patient outcomes Significant cost and health benefits
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Fluorescence-based biochip array
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Enhancements in Fluorescence-based Biochips
1. Enhanced Fluorescence Capture Efficiency
2. Plasmonic Amplification (Metal-enhanced Fluorescence)
3. High Brightness Labels
• 1+2+3 1000-fold enhancement
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Open lateral flow platform
Microfluidicarchitecture
Detection zones
Sample application zone
Sample clean-up/cell filtration
Immobilised antibodies
Reagent zones
CARDIAC WELLNESS CHIP
Reservoir
Nanoparticlelabels
Engineered antibodies and
oriented attachment
Surface functionalisation
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Detection
Wireless communication
Digital readout of result
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DIABETESDIABETES
• Major healthcare challenge4th major cause of premature death1 in 25 1 in 139% of NHS budget in UK300m worldwide diabetics
• Glucose Monitoring >25% of Diagnostics Market (€25bn)€10bn by 2010
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In-vitro .…. Wearable .…. Minimally Invasive…
…….... ‘In-vivo’ ????
DIABETES: Trends in Glucose MonitoringDIABETES: Trends in Glucose Monitoring
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Trends in Diabetes MonitoringTrends in Diabetes Monitoring
• Traditional meters will disappear• Patch and disposable / Implanted
minimally invasive devices• Non-invasive devices• Closed-loop systems (sense & insulin
dose)
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Animas Corp: IR laser; CAnimas Corp: IR laser; C--clamp clamp around 5mm blood vesselaround 5mm blood vessel
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In-vivo Glucose Monitoring using Glucose-Binding Protein (GBP)
FP: Environment-sensitive Fluorophore
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Biomarker Discovery: Colon CancerBiomarker Discovery: Colon Cancer
• Major Killer• Current Tests are crude and
unreliable• Objective:
Develop new, rapid test for early detection
Strategy: New Biomarker(s) + Biochip
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• Patient profiling at Clinical Research Centre at Beaumont Hospital, Dublin.
Biomarker Discovery
• Sample collection, analysis and banking (e.g. blood serum)
• Biomarker discovery using protein arrays
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KEY DRIVERS FOR BIOSENSORS KEY DRIVERS FOR BIOSENSORS
• Miniaturisation (Microsystems / Nanotechnology)
• Integration (Lab-on-a-chip; MEMS; µTAS ..)
• Multi-analyte sensing (Panels)
• Mass-production / disposability
• Sensing & wireless comms combined
• Convergence (Micro – Nano – Bio – ICT - …)
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Biomedical Sensors Biomedical Sensors –– Technology trendsTechnology trends
• Smart bandages (microneedles; sensing + drug delivery)
• In-vivo modules• Breath monitoring• Spectroscopic monitoring + Chemometrics• Wearable sensors• …..
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NanobotNanobot Biosensors ?Biosensors ?
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Smart Bandages Smart Bandages ---- RFIDRFID
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Breath constituent Level Methane 2 – 10 ppm Ethane 0 – 10 ppb
Penthane 0 – 10 ppb Nitric Oxide 10 –50 ppb
Carbon Monoxide 1 –10 ppm Carbonyl Sulfide 0 – 10 ppb
Nitrous Oxide 1 – 20 ppb Isoprene 50 – 200 ppb
Ammonia 0 – 1ppm Acetone 0 – 1 ppm
Disease Marker Level Renal Failure Ammonia 150 – 2000 ppb Breast Cancer Ethane 0 – 10 ppb
Asthma Nitric Oxide 10 – 100 ppb
BreathBreath MonitoringMonitoring
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TrendsTrends
• Diagnostics will become more predictive• Therapeutic interventions will become more
preventive• Healthcare will become more personalised
and tailored to the individual
‘‘FuturewatchFuturewatch: Biotechnologies for 2025: Biotechnologies for 2025’’, New Zealand , New Zealand Ministry of Research, Science & Technology, 2005Ministry of Research, Science & Technology, 2005
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NanomedicineNanomedicineRole for Role for NanomedicineNanomedicine::
•• Genomics & Proteomics rapidly elucidating molecular basis of many diseases
• Powerful diagnostic tools to identify genetic predisposition to disease
• Use of POC diagnostics to
• Identify patients requiring preventative medication
• Select most appropriate medication for individuals
• Monitor response to treatmentESFESF--European Medical Research Councils Forward Look European Medical Research Councils Forward Look Report on Report on ‘‘NanomedicineNanomedicine’’ 20052005
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Priority Areas in Priority Areas in NanomedicineNanomedicine (~Biosensors)(~Biosensors)
• Next 5 years:• Engineering technology for immobilising
cells/molecules on surfaces• Non-invasive, in-vivo diagnostic systems• Improved sensitivity for in-vivo methods• Implantable/injectable nanodevices for
diagnosis
ESFESF--European Medical Research Councils Forward Look European Medical Research Councils Forward Look Report on Report on ‘‘NanomedicineNanomedicine’’ 20052005
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Priority Areas in Priority Areas in NanomedicineNanomedicine (~Biosensors)(~Biosensors)
• Next 10 years:• Single molecule analysis• Nanosensing of multiple, complicated analytics
in-vitro• Nanosensing in vivo with telemetrically-
controlled, functional mobile sensors• Rapid fingerprinting of all components in blood
samples
ESFESF--European Medical Research Councils Forward Look European Medical Research Councils Forward Look Report on Report on ‘‘NanomedicineNanomedicine’’ 20052005
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Conclusions: TrendsConclusions: Trends
• Self-test; Home-use• Personalised medicine• Theranostics• Pharmacogenomics ---- Nutrigenomics!!• Personal responsibility for health• Sensors + eHealth• Closed loop systems• Wearable / in-vivo• Nanomedicine• Complexity of disease – multi-gene – need for
highly sensitive arrays
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Conclusions: Key Technical AreasConclusions: Key Technical Areas
• Biorecognition – receptors• Immobilisation / low NSB• High sensitivity transduction (arrays)• Calibration stability• In-vivo: Biomaterials, batteries etc• Glucose!!• Etc. …..
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ConclusionsConclusions• Major growth area
• Some trends predictable
• Academic – Industry – Clinical Partnerships
• Multidisciplinary – incentivise
• Need for high-quality underpinning science
• Need to consider total situation: government, health insurance, ethics, ‘who pays?’
• Impact on the quality of people’s lives
• FOCUS
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‘‘The future has already happened, it just The future has already happened, it just isnisn’’t very well distributed.t very well distributed.’’William GibsonWilliam Gibson
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Thank you!Thank you!