next-generation diagnostic platforms: smart … · • providing clinical utility by advancing the...
TRANSCRIPT
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NEXT-GENERATION DIAGNOSTIC PLATFORMS:SMART INTEGRATION OF CONVERGENT
SCIENCES & TECHNOLOGIES
Brian D MacCraithBiomedical Diagnostics Institute (BDI)
Dublinwww.bdi.ie
‘pHealth 2009’June 24 - 26, 2009, Oslo
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OUTLINE
• Profile of the BDI
• Trends in POC Diagnostics
• Key Issues: Overview of Presentations
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BDI PROFILE
• Industry-Academic-Clinical Partnership
• Point of Care Diagnostics (Human & Veterinary)
• Team of ~120• Distinctive Features:
– Embedded Industry Researchers
– Focus on Convergent Sciences & Technologies
– Innovative Platforms– Translational Research
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THE BDI PARTNERSHIP
Academic
Clinical
Industrial
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Clinical Collaborators (Ensuring Clinical Utility!)Clinician Specialty HospitalDr. James O’Donnell Blood Coagulation National Centre for
Hereditary Coagulation Disorders, St. James Hospital, Dublin
Prof. Dermot Kenny Cardiology Clinical Research Centre, Beaumont Hospital, Dublin
Prof. John O’Leary Oncology (Ovarian, Cervical)
The Coombe Women’s Hospital, Dublin
Dr. Richard Costello Respiratory Medicine Beaumont Hospital, Dublin
Dr. Robert Montgomery Hematology The Blood Center of Wisconsin, USA
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BDI VISION• Providing clinical utility by advancing the
science & technology of diagnostics to address unmet healthcare needs:
Early warning of major diseases (cardiac, cancer)Enabling self-management of healthEstablishing personalised therapeutic regimens (companion diagnostics)
• Focus areas:Point of Care (POC)Low Resource Environments Self Test - Home Use
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Cardiovascular DiseaseCritical Problem:Accounts for ~ 35% of all deaths
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THE SCIENTIFIC CHALLENGES
‘pM concs in μL volumes of physiological fluids: ~ 106 molecules in sample’
–High Sensitivity–Low concentrations of Biomarkers –Small volumes of complex fluids–Smart, rapid, miniature systems
Integration of diverse technologies
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CONVERGENCE APPROACH
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STRATEGIC PRIORITY AREAS•Translational Nanomedicine
• High-Brightness Nanoparticle Labels• Plasmonic enhancement of Fluorescence• Combined imaging & targeted drug delivery
•Ambient Assisted Living for Ageing Population• Breath Monitoring for COPD• Heart Failure Monitoring – NTproBNP biochip
•Personalised Medicine / Companion Diagnostics• e.g. POC Test for Platelet Function; Anti-platelet therapy
•Developing World applications / Global Diagnostics• Cell phones for remote diagnostics:
e.g. CD4 cell-counting
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High Brightness NanoparticlesEncapsulate many thousands of dye molecules inside a single NP.Create an “Ultra-bright” label for assays
60nm diameter
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Sandwich assay NIR dye doped NPs
• goat anti-human IgG polyclonal antibody
• human IgG• labelled goat anti human IgG
– Cy5– NIR-dye doped NP’s
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Human IgG sandwich FLISA with goat anti-hIgG Ru-NP conjugate 15/5/07
0
5000
10000
15000
20000
25000
30000
35000
40000
45000
50000
0.01 0.1 1 10 100 1000 10000 100000
Human IgG concentration (ng/ml)
Fluo
resc
ence
Uni
ts
Glu-BSA-Glu-AbGlu-Ab-NaBH4Glu-AbGlu-BSA-Glu-Ab (Repeat)Glu-Ab (Repeat)Glu-BSA-Glu-Ab-NaBH4Glu-BSA-Glu-Ab-NaBH4Glu-Ab-NaBH4Cy5-Ab
Sandwich assay Ru dye doped NPs
Best Result so far:
25 times decrease of the LOD
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• Capability of synthesising Ag & Au nanoparticles, nanorods, nanodiscs, prisms, core/shell nanoparticles.
• Ability to tune excitation and emission properties by controlling the size and shape of the nanoparticle.
Plasmonic Nanoparticles: Synthetic Capabilities
Nano-prisms Nano-plates Nano-rods
400 600 800 10000.0
0.2
0.4
0.6
Abs
orba
nce
Wavelength (nm)
Ag NRS using a high seed concentration
Ag NRS 30uL Ag NRS 60uL Ag NRS 125uL Ag NRS 250uL
400 500 600 700 800 900 10000.04
0.08
0.12
0.16
0.20740nm728nm
616nm604nm
Abs
orba
nce
Wavelength (nm)
Ag NRS 30 μL Ag NRS 30 μL + PAH Ag NRS 60 μL Ag NRS 60 μL + PAH
Silver core/Silica shell
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ACHIEVEMENT II: Plasmon enhanced assay
8.7234.333CV% (F0)5.840.184LOD (ng/ml)52.51142.4FmaxCy5149nm NPLabel
0.01 0.1 1 10 100 1000 10000
hIgG (ng /mL)
Fluo
resc
ence
[a.u
] 149 nm NPs
no NPs
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ACHIEVEMENT II: Plasmon enhanced assay
8.7234.333CV% (F0)5.840.184LOD (ng/ml)52.51142.4FmaxCy5149nm NPLabel
0.01 0.1 1 10 100 1000 10000
hIgG (ng /mL)
Fluo
resc
ence
[a.u
] 149 nm NPs
no NPs
BEST REDUCTION IN LOD
~ 30 TIMES
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Synthesis of fluorescent magnetic nanoparticles
100nm
fluorophore
Silica shellIron core
• Dual- function
• Magnetic properties
• Fluorescent properties
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Åmic Open Lateral Flow (OLF) chip
www.amic.se
J&J Ortho-Clinical Diagnostics
ZEONOR (COP)
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PAGE TITLE
Heart Failure: NTproBNP assay on SAF scanner• Spotting of capture antibody in on chips with removed pillars• Synthetic samples (recombinant NTproBNP in PBS with BSA)• Linear response in clinical range
0.10
1.00
10.00
100.00
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1 10 100 1000 10000 100000 1000000
concentration (pg/ml)
sign
al (r
fu)
datanegative control Raw data
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Inappropriate formation of blood clots leads to heart attack and stroke
Platelets are tiny blood ‘cells’ 2-4 μm in diameter: 150,000 to 300,000 in 1ml of blood
Resting platelets Activated platelet Platelet aggregate: clot
Platelet Function Assays
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Imaging & Flow system forPlatelet Research
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OBJECTIVE
Develop a device that measures platelet function under conditions that occur in the vascular systemDevelop a device that measures platelet function under conditions that occur in the vascular system
imager
buffer in waste
outblood in
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Overview of Session Presentations
• Decentralization: Is there an unmet need for POC tests and pHealth lab tests? [Hansson]
• Truly personalised medicine! Novel population-based approaches to clinical decision-making [Dacso]
• Technical challenges and business casefor POC assays. [Borch/Karlsen]
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Acknowledgements IThis material is based upon works supported by the
Science Foundation Ireland under Grant No. 05/CE3/B754
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CARE-MAN Partners• UniversitiesUniversität Tübingen, DDublin City University, IRLUniversité Neuchatel, CHUniversità di Firenze, ILinköping Universitet, SEUniversité Lyon, FUppsala Universitet, SE
HospitalsUKT, Tübingen, DCNR-IFC, Pisa, IMUG, Graz, AHCPB, Barcelona, ERHP, Pardubice, CZ
IndustryApplera, Warrington, UKSiemens AG, Erlangen, DBHC, Leverkusen, DBTS, Leverkusen, D
SMEsAttempto, Tübingen, DBiosensia, Cork, IRLBiotools, Madrid, E Inetsys, Suresnes, FDatamed, Rodano, IBIT, Schwalbach, DEXBIO, Praha, CZ
Research InstitutesCNR-IFAC, Firenze, IGSF Neuherberg, DFHG, IPM Freiburg, DJRC, Ispra, I/BEARC Seibersdorf, Wien, AJRS Graz, AVRI Brno, CZ
Acknowledgements II
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Acknowledgements III• The SmartHEALTH project is partly funded by the European Commission (IST-NMP-
2-016817)www.smarthealthip.com