Humanperso.crans.org/~hammerer/Puces_transp.pdf · 2009-01-12 · new avenues for identification of...
Transcript of Humanperso.crans.org/~hammerer/Puces_transp.pdf · 2009-01-12 · new avenues for identification of...
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Human
40 000 genes
100300 000 ARN
15 000 000 proteins
Much more functions
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Global approches in postgénomique new avenues for
identification of molecular basis of pathologies
drug discovery
biotechnologies
Génome Transcriptome Proteome
Métabolome Transportome Physiome
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Genomic, chemical or physical perturbation
Transcriptionmodulation
Activitymodulation
Structuralmodulation
Genotoxicity
Physiome perturbation
Transcriptomemodulation
Target
Proteome modulation
Posttranslationalmodifications
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Cell culture or organism
No treatment Treatment
DrugsPathogenStress / Toxic agentsTransformation
Control cellsor tissus
Treated cellsor tissus
Differential transcriptome or proteome analysis
Molecular target
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Differential transcriptome analysis
Model biologicalsystem
Reference culture
Testculture
Potential drugNatural extract
Combinatorial extract
Referencetranscriptome
Testtranscriptome
Differential analysis
Metabolome wide screening
Target genes and products
Secondary effects
Design of secondary selectionsystem and models
Low cost / efficiency ratio
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Nucleicacids
Nature (Sequence)
Quantity (expression)
Proteins
Sequence
Processing / modification complexes
FoldingCatalytic activitiesSignalingRecognition
Multiparametric
Quantity (expression)
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La transcriptionLa transcription
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La La variationvariation de la transcription est de la transcription est une étape clé de la une étape clé de la régulationrégulation de de
l’expression des gènes en réponse à:l’expression des gènes en réponse à:
• une adaptation au milieu extérieur une adaptation au milieu extérieur (T, P, lumière, absence ou présence (T, P, lumière, absence ou présence d’un nutriment, etc.)d’un nutriment, etc.)
• une réponse à un stimulus une réponse à un stimulus (nerveux, hormonal, cellulaire)(nerveux, hormonal, cellulaire)
• un devenir cellulaire à respecter un devenir cellulaire à respecter (mitose, méiose, différenciation)(mitose, méiose, différenciation)
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Principe de l’hybridation
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La technique de Northern La technique de Northern BlotBlot
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Analyse globale de la Analyse globale de la transcriptiontranscription
Les techniques classiques de Northern Les techniques classiques de Northern
Blot isolent une série de gènes connus, Blot isolent une série de gènes connus,
dont on soupconne une régulation. Mais dont on soupconne une régulation. Mais
la description des variations la description des variations
transcriptionelles d’un nombre limité de transcriptionelles d’un nombre limité de
gènes est-elle suffisante pour analyser la gènes est-elle suffisante pour analyser la
réponse d’un organisme entier?réponse d’un organisme entier?
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Analyse de la réponse totaleAnalyse de la réponse totaledes gènes d'un organismedes gènes d'un organisme
• Sans séparer les produits des gènes sur Sans séparer les produits des gènes sur gel.gel.
• En miniaturisant l'hybridation pour En miniaturisant l'hybridation pour avoir un volume le plus faible possible avoir un volume le plus faible possible (meilleur signal, plus facile à (meilleur signal, plus facile à manipuler).manipuler).
• En ayant des conditions d’hybridation En ayant des conditions d’hybridation identiques pour tous les gènes.identiques pour tous les gènes.
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Prototype of quantum memoryCEA (France)
FEBIT chip
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How do DNA and protein chips work ?
DNA from different genes or corresponding proteins attached on a support
ComplementaryDNA, RNA or proteinsto analyze
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AA
TT
CC
GG
AA
TT
CC
GG
AA
TT
CC
GG
AA
TT
CC
GG
++
Sonde fixée sur la lame de
verre
Fragments d’ARN cible marqués Formation d’un duplex
TT
CC
GG
TT
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Basic principle Base pairing recognition between surface supported DNA and DNA/RNA in solution
Common features to DNA chips
Density High density from several hundred to millions of hybridization spots per device
Detection
Nucleic acid labelingradioactive, direct fluorescence,energy transfer, chemiluminescence
Chip embedded detectionmass detection, refraction index, electric field, conduction
Usages Transcriptome analysisSequence mapping, pseudosequencingDetection, cloning, interaction analysis
Basic principle Base pairing recognition between surface supported DNA and DNA/RNA in solution
Common features to DNA chips
Density High density from several hundred to millions of hybridization spots per device
Detection
Nucleic acid labelingradioactive, direct fluorescence,energy transfer, chemiluminescence
Chip embedded detectionmass detection, refraction index, electric field, conduction
Usages Transcriptome analysisSequence mapping, pseudosequencingDetection, cloning, interaction analysis
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TechnologiesTechnologies
medium density medium cost / spot medium global cost
Commercial & custom chips
Inexpensive to customize
spotting of oligonucleotides or PCR products
medium density medium cost / spot medium global cost short & medium & long
probes
Commercial & custom chips
Best adapted to genome subset
In
in situ synthesis
low cost / spot high global cost short oligos only
Commercial solution high to very high density low cost / spot high global cost short oligos only
Adapted to full genomes
Plug and play
unique features
oligo or nonconventionalprobes
selfprobing and nanochips
Still mainly experimental
Today low but target high density
Dedicated chips
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Fabrication des pucesFabrication des puces
•A base d’oligonucléotides: (type A base d’oligonucléotides: (type Affymetrix)Affymetrix)
Adressage mécaniqueAdressage mécanique
Adressage photochimiqueAdressage photochimique
Adressage électrochimiqueAdressage électrochimique
•A base d'ADN provenant de PCR (Pat A base d'ADN provenant de PCR (Pat Brown)Brown)
Le spottingLe spotting
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Patt Brown technology
Probes : oligonucleotides or PCR products cDNAs
ARN(condition A)
ARN(condition B)
labelling
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Le spottingLe spotting
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On dépose de l’ADN sur On dépose de l’ADN sur des lames de verre:des lames de verre:
•oligonucléotides oligonucléotides synthétisés sur la lame synthétisés sur la lame (Affymetrix et variations) (Affymetrix et variations)
•PCRs déposés sur la lame PCRs déposés sur la lame par un spotter (Pat Brown par un spotter (Pat Brown et dérivés)et dérivés)
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Gene cloningFormatting of librariesSlide spotting
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Plateforme PucesàADN Gif/Orsay
Gene isolation and amplification
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Plateforme PucesàADN Gif/Orsay
Slide (DNA chips) printing
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In situ synthesis of short oligoprobesHigh densityIndustry standard High cost
Direct photodeprotectionbased chemistry
Although each position in the sequence of an oligonucleotide can be occupied by 1of 4nucleotides, resulting in an apparent need for 25 x 4 different masks per wafer, the synthesis process can be designed to significantly reduce this requirement.
Uses photolithography and solidphase chemistry to produce arrays containing hundreds of thousands of oligonucleotide probes packed at extremely high densities.
The probes are designed to maximize sensitivity, specificity, and reproducibility, allowing consistent discrimination between specific and background signals, and between closely related target sequences.
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Optical maskLight
Photodeprotection
Photodeprotection
Coupling
Coupling
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AFFYMETRIX TECHNOLOGYAFFYMETRIX TECHNOLOGY
Fluorescence intensity
Perfect match probesMismatched probes
Reference sequence
Fluorescence intensity
Probe sequences
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The DNA processor TMCentral element of the geniom® technology is the DNA processor TM, a unique 3D microchannel structure. It is subdivided into eight segments with individual fluid control resulting in eight independent microarrays.Microarrays are build up by in situ oligonucleotide synthesis inside the DNA processor TM. A digital projector and proprietary phosphoramidite chemistry allow maskless light activated synthesis. This results in spots of defined oligonucleotides with a size of 34 µm x 34 µm.The transparent reactive surface is about 1 cm² in total and allows parallel synthesis of up to eight arrays with a minimum of 6,000 oligonucleotide probes each.The disposable DNA processorTM is held in a cartridge for easy handling and auto alignment in the instrument’s fluid system and optical path. A memory module in the cartridge assures correct identification and history tracking.
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Light source Optical device
OligonucleotideSequence file
Computer
Digital image
Array of electricallypositioned micromirrors
ChipPhotodeprotection drivenoligonuneotide synthesis
Hybridization
Reading
Revelation
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Optically addressed in situ synthesis of oligonucleotides (FEBIT technology)
Several times 104 genes per chip
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Match
Match
Match
Match
Match
Mismatch
Mismatch
Mismatch
Mismatch
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XeoChip™ (Houston , USA)is proprietary platform technology for
manufacturing nanochamber microarray biochips .
Optically addressed (micromirrors) are used to direct oligonucleotide synthesis
using photogenerated acid for deprotection in
preformed microslots.
Claimed advantage is the used of classical chemistry (more efficient) for oligonucleotide synthesis. Oligonucleotides are synthesized on a in a matter of few hours with a stepwise yield higher than 98.5%.
Up to 150 base probe can be synthetized
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Example of a XeoChip™ used in differential gene expression of brain (green color) versus skeletal muscle (red color) samples. This XeoChip™ contains 253 cancerrelated genes in 15 replicates throughout the chip. Representative log plot of the
differential expression of gene in skeletal muscle RNA (Cy3) vs brain RNA (Cy5)
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Well
BinderChip
Adaptation to high throughput screening
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DNA chip ready to hybridize The automated hybridization step
CDNA hybridization
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Plateforme PucesàADN Gif/Orsay
The four LASER DNA chip reading machine
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Red = reference
Green = modified
transcriptome
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PrinciplePWG technology provides highly sensitive detection with low background and high signaltonoise ratios. A laser beam is directed into the thin PWG layer by a coupling grating. The light propagates within this PWG layer and generates a strong electromagnetic field. This evanescent field decays exponentially in relation to the distance to the PWG layer, limiting its penetration depth to approximately 300 nm. Detection of fluorescent molecules is restricted to the sensing surface with the capture probes and their bound target molecules with no background noise beyond the penetration depth of the field.
Planar Waveguide Principle
SensiChip Array Detection System
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HiLight ® Detection System
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Dendrimer based amplification
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The bioinformatic step
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Fold induction = Sa/Sb if Sa> Sb or Sb/Sa if Sb> SaFold induction = Sa/Sb if Sa> Sb or Sb/Sa if Sb> Sa
Condition B
Con
ditio
n A
Affymetrix DNA chip analysis of yeast transcriptome (whole genome)
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Série1
Ctr
Imidazole
TGF beta
3A4, Squalene epoxydaseadenomatosis polyposis coli (APC
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8,00
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6,00
5,00
4,00
3,00
2,00
1,00
0,00
1,00
2,00 CY
C1
CY
B2
CO
X4
CO
R1
%%
YH
R00
1WQ
CR
2H
AP
4Q
CR
7C
OX
7C
OX
13C
OX
5AQ
CR
9C
YT1
CO
X12
QC
R6
HM
G1
QC
R8
OLE
1A
TP3
FET
3C
OX
15E
RG
5S
OD
2C
OX
6A
TP7
CTT
1A
TP12
ATP
20C
YC
7A
TP14
Control conditionKinetic end pointSérie3
2,00
1,50
1,00
0,50
0,00
0,50
1,00
1,50
2,00
2,50
ATP
5C
OX
8FR
E 1
CO
X17
FTR
1A
AC
1A
TP4
AD
E2
ATP
1C
TA1
PE
T9A
TP16
PO
X 1
ATP
2C
OX
14A
TP11
ER
G8
ATP
17%
%Y
AL0
39C
RO
X1
MO
T 3
ER
G7
GC
V3
CO
X10
FET
4A
TP15
ER
G20
YD
R13
3CH
AP
2A
DE
1
Série1
Série2
Série3
« Affymetrix » criteria ranking (mean normalized)
Kinetic start point
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20,00
15,00
10,00
5,00
0,00
5,00
10,00
0 20 40 60 80 100 120
Control Time 1 Time 15
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Ser1: ctr 2: Temps1 3 temps15
1,00
0,80
0,60
0,40
0,20
0,00
0,20
0,40
0,60
0,80
1,00
0 20 40 60 80 100 120
Série1
Série2
Série3
Normalized induction factors (AFM like)
Control Time 1 Time 15 N=(A+Lstd)/(B+Lstd)1 (A>=B)N=1(B+Lstd)/(B+Lstd) (B>A)
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Clustering : regrouper les gènes selon leur pattern d'expression
Gene 1
Gene 2
Gene 3
Gene 4
Gene 5
Gene 6
Gene 7
Gene 8
Gene 9
89
123
4567
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Data base
SVD decomposition
Variable order SVD
reconstruction
Variable order
multilinear
deconvolution
Chip set registers SVD registers
Register operators
Chip normalisation
Data corrections
Data conversion
Data visualisation
Probe validation
Mask generator
Algorithms for data analysis, correction & normalization
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Gene
probe
probe
probe
Gene
probeprobeprobe
probe
probe
probe
probeprobeprobe
Chip1 Chip N
Probe averageProbe SD
SVD correlation
Match/MismatchPixel SD data
Principal components Paired
correlations
Filter (combine absolute & rank criterias)
Ranking
MASK
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Window in the clustering of differential transcriptome in yeast
Time
Window in the clustering of differential transcriptome in yeast
Time
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Example of identificationof cancer subtypes
using DNA chipanalysis
Plateforme PucesàADN Gif/Orsay
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DNA chip based sequence mapping
Oligonucleotide probe setscorresponding to possible alleles
Sequence toanalyse
Loci to map
hybridization
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Use of chips for sequence analysis
Decreasing stability of duplex DNA
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DNA chip based sequence mapping technology
DNA to analyse
PCR amplificationof region of interest
Allele specific oligonucleotide
probes
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Multiplex sequence mapping
DNA to analyse
PCR amplification
Probe set1 Probe set2
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Sequence mapping (MOSECA) of three combinatorial librariesSequence mapping (MOSECA) of three combinatorial libraries
Sequencing with chips
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200
400
600
1.5 1 0.5 0.5 1 1.5
250500750
10001250
1.5 0.5 0.5 1.50
R2 index
Freq
uenc
yC
umul
ated
requ
ency
A
B
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Inverted geometry using high Inverted geometry using high density chipsdensity chips
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GenotypingThe geniom® technology has been used to identify relevant single nucleotide polymorphism (SNP) patterns in immune regulatory genes. An array has been developed to analyze 94 SNPs in parallel. ProbesProbe design was supported by the geniom® software generating arrays of 12 probes for both sense and the antisense strand interrogating each SNP position.
Sample preparationStarting from genomic DNA SNPs were amplified by PCR in a multiplex reaction. PCR products were pooled and labeled by incorporation of e.g. biotinylated dNTPs.
Example of a SNP typing result
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Génotypage avec des puces à ADNGénotypage avec des puces à ADN
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Mass spectroscopy
Proteome
Multi dimensionnal resolution
Isolatedproteins
Peptides
Identification
Quantification
Genomic informations(sequence)
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The protein chip technology
Human40 000 genes
100300 000 ARN
15 000 000 proteins
Much more functions Protein pattern
Still an emerging technology …
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High throughput approaches of protein functions
Catalytic functions
Recognition functions
Nature & characteristics of activities
Search for inhibitoror activator
Search for partners
Modified properties
Classical approaches involving large robotic facilities
Miniaturisation
Protein chips
ab initio (sequence based) and structural approaches
LabonChip
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Protein chips
Bring together on the same device
Spatial resolution(large set of objects)
Function analysisInteractioncatalysis
Spatial resolution
t
1D or 2D resolution of a
mixture
MicrochromatographicMicroelectrophoresisMicrofluidicAffinity (antibodies, molecular imprinting)
Spotting on a 2DmatrixElectrical, optical or magnetic addressingBinding to selfidentifying microspheres
Function analysis« Events » detection system
Access to the time dimension (kinetic)Need for real time systems
Several hundred of technologies, more than 40 companies in 2002
fluorescenceSPR, MSmechanicalfield effect
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Réponse spécifique
Réponse non-spécifique
Contrôle négatif (or nu)
Saturation
Association
Injection End of injection
Dissociation
Regeneration
Signal
Temps
Baseline
Regeneration
Flow cellFlow cell
Surface Plasmon Resonance imagery
The first world wide available technology that bring together:
Spatial discrimination
and kinetic discrimination
for full and massively parallel functional characterization of proteins
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Gold
Gold
A proprietary unique HiTech technology
GENOPTIC and CNRS proprietary surface chemistry
D
AB
C platinum counter electrode pipette tip polypyrrole spots gold surfaceglass
A powerful parallel A powerful parallel protein chip approachprotein chip approach
CNRS combinatorial library technologies
Sophisticated robotics
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STRCHIP technology
On chip proteome analysis
HTS screening for accelerated drug discovery
Advanced diagnostic tool
Environmental monitoringand hazarddetection
Individually adjusteddrugtreatment
Drug security
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Substitute single chip by a large number of microbeads
Selfidentifying microbeads
« Homogeneous phase » technology
Low density but low cost and easy to implement
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Color coded microspheres collection Single microsphere type coupled to probe
Hybridization (DNA) orrecognition (antibodies)
Microbeadssorter and reader
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Reading hybridization Reading gene name