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innovating Nanoscience
Quantitative Nanomechanical Diagnostics• Towards portable nanomechanical diagnostic devicesProf. Martin Hegner (hegnerm@tcd.ie)CRANN, School of Physics, Trinity College Dublin, Ireland
© CRANN www.crann.tcd.ie
Goals
• Provide overview on state of the art label free diagnostic.
• Nanomechanical Principle• Genomics• Proteomics• Microbi-omics
© CRANN www.crann.tcd.ie
Diagnostic in Micron – / Nano-Regime
Nanoscience delivers new opportunities for better understanding of those disease related compartments and offers new tools to improve drug treatment. Especially in the context of personalized healthcare we have to understand and be able to analyze low level structures such as supramolecular assemblies
Personalized Health Care
TomorrowNew tests based on
genomics and proteomicsRisk prediction – what could happen?Early detection – what is happening now?Pharmacogenomics – which therapy to use?Therapy prediction – what will happen?
MonitoringTherapyDiagnosisPreventionTarget
MonitoringPredisposition
Testing
test test test test testtest/drug
© CRANN www.crann.tcd.ie
Nanomechanics: Exploring New Frontiers in Biosensing and Diagnostics
Nanometer Scale Force measuring devices allow detailed investigations of energy, kinetics and mechanics of interacting biological molecules.
Cantilever Arrays
IndividualFunctionalization
Device / Assay development
© CRANN www.crann.tcd.ie
Static or dynamic analysis
Qualitative measurementLigand-Receptor InteractionsSurface Stress changes
Quantitative measurementLigand Receptor InteractionsIn-/Decrease of mass
In gas, humid environment, in liquids
Combination of both measurements in one instrument
Static (DC) Dynamic (AC)
•Fritz J. et al.Science (2000)•McKendry R. et al. PNAS(2002)•Arntz Y. et al. Nanotechnology (2003)
•Gfeller, K.Y. et al.Appl. Env. Microbio.(2005) •Nugaeva, N. et al.Microscopy & Microanal.(2007)
•Huber F. et al Biosens.Bioelectr. (2005)•Backmann N. et al. PNAS (2005)•Zhang J. et al. Nature Nanotech.(2006)
Braun et al.,Phys. Rev.E(2005)Braun,T. et al.Nature Nanotech(2009)
© CRANN www.crann.tcd.ie
Functionalization of sensors Assembly of chamber for measurement
M. W
alth
er /
CR
AN
N
© CRANN www.crann.tcd.ie
Genomic studies using cantilever arraysRohit Mishra; Collaboration with Hoffmann-La-Roche (Certa, Noy)
dsRNAViral RNA/Transposons
Nucleus
Cytoplasm
Dicer
RISCComplementary binding
with mRNA
siRNA formationStrand separation
mRNA cleavageSelective Gene
Silencing
mRNAGene Expression
Synthetic siRNADelivery through cell membrane for Therapeutic Gene Silencing
Relevant biomarkers in diagnostics
Si-CL arraysIBM labs
500µm long100µm wide0.5µm thickpitch 250µm
Nature Nanotech. 1 (2006) 214.
Genomics
© CRANN www.crann.tcd.ie
Genomic studies using cantilever arraysRohit Mishra; Collaboration with Hoffmann-La-Roche (Certa, Noy)
dsRNAViral RNA/Transposons
Nucleus
Cytoplasm
Dicer
RISCComplementary binding
with mRNA
siRNA formationStrand separation
mRNA cleavageSelective Gene
Silencing
mRNAGene Expression
Synthetic siRNADelivery through cell membrane for Therapeutic Gene Silencing
Relevant biomarkers in diagnostics
Si-CL arraysIBM labs
500µm long100µm wide0.5µm thickpitch 250µm
Nature Nanotech. 1 (2006) 214.
© CRANN www.crann.tcd.ie
DN
A hybridization
Driving personalized diagnostics through nanomechanics
J. Zhang et al., Nature Nanotech. 1 (2006) 214.
Exploiting regulatory processes of the interferon-alpha inducible gene 1-8U for cancer treatment using cantilever arrays at picomolar sensitivity levels.
Gene Idle Gene Upregulated
Nanomechanics in Biology
Static mode
© CRANN www.crann.tcd.ie
DN
A hybridization
Driving personalized diagnostics through nanomechanics
J. Zhang et al., Nature Nanotech. 1 (2006) 214.
Exploiting regulatory processes of the interferon-alpha inducible gene 1-8U for cancer treatment using cantilever arrays at picomolar sensitivity levels.
Gene Idle Gene Upregulated
Nanomechanics in Biology
Static mode
© CRANN www.crann.tcd.ie
DN
A hybridization
Driving personalized diagnostics through nanomechanics
J. Zhang et al., Nature Nanotech. 1 (2006) 214.
Exploiting regulatory processes of the interferon-alpha inducible gene 1-8U for cancer treatment using cantilever arrays at picomolar sensitivity levels.
Gene Idle Gene Upregulated
Nanomechanics in Biology
No LabelNo PCR AmplificationSensitivity ~ 10 fMSelectivity (Species, SNP)ncRNA direct measurementsfrom lysed cells or serum
Static mode
© CRANN www.crann.tcd.ie
Quantitative real-time measurements of virus binding to native bio-membranes
System under investigation: Bacterialvirus binding to membrane embeddedreceptor
Detection of mass uptake (nano grams)
Bio-functional microcantilevers detect viruses binding to membrane proteins in liquidCurrent sensitivity 30fM -> 1 virus / 4 cells
200 µm
sens
ref
time
T. B
raun
/ C
RA
NN
Nat
ure
Nan
otec
h. 4
, 179
-185
Proteomics
© CRANN www.crann.tcd.ie
Quantitative real-time measurements of virus binding to native bio-membranes
System under investigation: Bacterialvirus binding to membrane embeddedreceptor
Detection of mass uptake (nano grams)
Bio-functional microcantilevers detect viruses binding to membrane proteins in liquidCurrent sensitivity 30fM -> 1 virus / 4 cells
200 µm
sens
ref
time
T. B
raun
/ C
RA
NN
Nat
ure
Nan
otec
h. 4
, 179
-185
© CRANN www.crann.tcd.ie
Fast micro-organism growth detection
Target microorganisms: fungi, eukaryotes, bacteria, …
Microorganism play an important role in causing diseases, food spoiling, contamination of agriculture production and bio-destruction of substances in industry. Therefore a fast detection method of living micro-organism is of great importance. Hospital analysis is providing identification of microbe after 4 days, based on nutritional media.
N. Maloney, G.Lukacs / CRANN
Micro-/Cellbio
© CRANN www.crann.tcd.ie
Fast micro-organism growth detection
Target microorganisms: fungi, eukaryotes, bacteria, …
Microorganism play an important role in causing diseases, food spoiling, contamination of agriculture production and bio-destruction of substances in industry. Therefore a fast detection method of living micro-organism is of great importance. Hospital analysis is providing identification of microbe after 4 days, based on nutritional media.
N. Maloney, G.Lukacs / CRANN
© CRANN www.crann.tcd.ie
Hospital challenge• Identity after 4 days, based on incubation
condition, Highly skilled personnel
Fast Microbial Growth DetectionIndustrial ChallengeDisadvantages of current methods used inQuality and Safety procedures in industry:
• Time consuming: Analysis time > few days• Live/dead cell discrimination• Requires highly skilled personnel
25 mL agar mediumThickness 5 mmPlate diameter 10cm
10-8 mLnutritive layer
Cantilever dimensions: Length: 500 µm;Width: 100 µm; Thickness: 2-7 µm; Pitch: 250 µm;
A. niger C. albicans
E. coli P.aeruginosa
S.aureus
Microorganisms grown oncantilever sensors @ CRANN
G. Lukacs, N. Maloney
ESBL in hospitals
Extended spectra beta lactamase (ESBL) resistance transmitted to people via food uptake, increase of resistance in western countries more than 10x during the last five years
Growth Detection Time
ProkaryotesEukaryotes
© CRANN www.crann.tcd.ie
Hospital challenge• Identity after 4 days, based on incubation
condition, Highly skilled personnel
Fast Microbial Growth DetectionIndustrial ChallengeDisadvantages of current methods used inQuality and Safety procedures in industry:
• Time consuming: Analysis time > few days• Live/dead cell discrimination• Requires highly skilled personnel
25 mL agar mediumThickness 5 mmPlate diameter 10cm
10-8 mLnutritive layer
Cantilever dimensions: Length: 500 µm;Width: 100 µm; Thickness: 2-7 µm; Pitch: 250 µm;
A. niger C. albicans
E. coli P.aeruginosa
S.aureus
Microorganisms grown oncantilever sensors @ CRANN
G. Lukacs, N. Maloney
ESBL in hospitals
Extended spectra beta lactamase (ESBL) resistance transmitted to people via food uptake, increase of resistance in western countries more than 10x during the last five years
Growth Detection Time
ProkaryotesEukaryotes
© CRANN www.crann.tcd.ie
Hospital challenge• Identity after 4 days, based on incubation
condition, Highly skilled personnel
Fast Microbial Growth DetectionIndustrial ChallengeDisadvantages of current methods used inQuality and Safety procedures in industry:
• Time consuming: Analysis time > few days• Live/dead cell discrimination• Requires highly skilled personnel
25 mL agar mediumThickness 5 mmPlate diameter 10cm
10-8 mLnutritive layer
Cantilever dimensions: Length: 500 µm;Width: 100 µm; Thickness: 2-7 µm; Pitch: 250 µm;
A. niger C. albicans
E. coli P.aeruginosa
S.aureus
Microorganisms grown oncantilever sensors @ CRANN
G. Lukacs, N. Maloney
ESBL in hospitals
Extended spectra beta lactamase (ESBL) resistance transmitted to people via food uptake, increase of resistance in western countries more than 10x during the last five years
Growth Detection Time
Conventional MethodsCL Array ~ 1.5 hrs
~ 8 hrs
~4 hrsCL ArrayConventional Methodsµ-Fungi ~4-6days
ProkaryotesEukaryotes
© CRANN www.crann.tcd.ie
Nanomechanical Sensors for Quantitative Infection Detection
• By scaling mechanical sensors to the micron or nano regime enormous sensitivities can be achieved
• Direct nano-mechanical quantitative label-free detection of viable species within < 1 hr
• Differential read-out mandatory (in situ control measurement)• Stress measurements 1000 x more sensitive than SPR• Form factors: Cantilever, Double Clamped Beam, Hollow Beam, Squares• Automation possible (ink-jet spotting) allows spotting of successive layers• Interdisciplinary approach required• Among current projects: Malaria vaccination efficacy assay (STI), RNAi
diagnostic (Roche), Q&S (Novartis), Integration (CalTech).
Species which cause infections: Virus and microorganismsGenomic ncRNA biomarker detection
© CRANN www.crann.tcd.ie
Nanomechanical Sensors for Quantitative Infection Detection
• By scaling mechanical sensors to the micron or nano regime enormous sensitivities can be achieved
• Direct nano-mechanical quantitative label-free detection of viable species within < 1 hr
• Differential read-out mandatory (in situ control measurement)• Stress measurements 1000 x more sensitive than SPR• Form factors: Cantilever, Double Clamped Beam, Hollow Beam, Squares• Automation possible (ink-jet spotting) allows spotting of successive layers• Interdisciplinary approach required• Among current projects: Malaria vaccination efficacy assay (STI), RNAi
diagnostic (Roche), Q&S (Novartis), Integration (CalTech).
Species which cause infections: Virus and microorganismsGenomic ncRNA biomarker detection
Nano-BioMEMSBasic Science
Applied Science
© CRANN www.crann.tcd.ie
Nanomechanical Sensors for Quantitative Infection Detection
• By scaling mechanical sensors to the micron or nano regime enormous sensitivities can be achieved
• Direct nano-mechanical quantitative label-free detection of viable species within < 1 hr
• Differential read-out mandatory (in situ control measurement)• Stress measurements 1000 x more sensitive than SPR• Form factors: Cantilever, Double Clamped Beam, Hollow Beam, Squares• Automation possible (ink-jet spotting) allows spotting of successive layers• Interdisciplinary approach required• Among current projects: Malaria vaccination efficacy assay (STI), RNAi
diagnostic (Roche), Q&S (Novartis), Integration (CalTech).
Species which cause infections: Virus and microorganismsGenomic ncRNA biomarker detection
Nano-BioMEMSBasic Science
Applied Science
Label-free mixed assays in liquid environment possible with nanomechanical cantilever array
sensors
© CRANN www.crann.tcd.ie
The Nanomechanics Project Team@ CRANN, Trinity College Dublin
D. BrüggemannS. CullenV. JadhavJ. JensenG. LukacsN. MaloneyR. MischraM. WaltherF. Wruck
Former members:V. Aranyos, Y. Arntz, N. Backmann, S.-L. Ball,V. Barwich, M. Baller, F. Battiston, M. Bell,P. Bertoncini, A. Bietsch, T. Braun, A. Breedekamp, R. Daly, U. Dammer, M. D’Andrea, M. Dreier,M. Dorrestijn, M.Farina, J. Fritz, S. Garry, H. Gaussier,W. Grange, K. Gfeller, M. K. Ghatkesar, P. Haas,F. Huber, S. Husale, R. Joshi, M. Karle, M. McKane,R. McKendry, N. McLaughlin, P. Noy, N. Nugaeva,L. O’Connel J.P. Ramseyer, E. Rebourt, K. Renggli, P. Shahgaldian I. Schumakovitch, D. SkokoT. Strunz, M. Vögtli, G. Yoshikawa, J. Zhang
In collaboration with:Roche Center of Molecular GeneticsU. Certa, SwitzerlandCalTech USAM. RoukesFZ Jülich GermanyG. BüldtSwiss Tropical InstituteC. Daubenberger, SwitzerlandUniversity of BonnW. Voos, GermanyTrinity College DublinY. G’unko, G. Duesberg, IrelandNovartisM. Schuleit, SwitzerlandSt. James HospitalT. Rogers, IrelandUniv. Paris IV, Inst. Jacques MonotW. Grange, France
M. Hegner
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