illumina snp genotyping technologies beadarray and ... · snp genotyping assay and snp multiplexing...
TRANSCRIPT
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Illumina SNP Genotyping TechnologiesBeadArray and BeadChip Platform
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SNP Genotyping Assay and SNP Multiplexing Level per Sample
• GoldenGate AssayOPA synthesis containing 48, 96, 144, 192,
384, 768, 1536, or 3072-plex SNPs per sample assay
• Infinium AssayCustom made iSelect chips to assay 3072 up
to 1M SNPs per sample.
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Infinium products targeted toward Agricultural marketsBovineHD BeadChip– 8 samples, 777,962 SNPs
BovineSNP50 BeadChip– 24 samples, 54,609 SNPs
CanineHD BeadChip– 12 samples, 172,115 SNPs
OvineSNP50 BeadChip– 12 samples, 54,241 SNPs
PorcineSNP60 BeadChip– 12-samples, 62,163 SNPs
MaizeSNP50 BeadChip– 24 samples, 56,110 SNPs
iSelect Custom Panels
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iSelect BeadChip Formats and Supported Marker Densities
BeadChipFormat 24-sample 12-sample 4-sample
Previous plexrange 3,072 – 60,800 60,801 – 200,000 n/a
New plex range 3,072 – 90,000 90,001 – 250,000 250,001 – 1M
Add-on content range*
Up to limit of 90,000
Up to limit of 250,000 Up to limit of 1M
*Add-on content range allowed = (maximum attempted beadtypes on BeadChip) MINUS (existing beadtypes in original pool)
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Rat Citrus
Wheat HoneyBee
Armadillo
Cacao
Rhesus
Cat
Canola
Rice
Atlantic Cod
LettuceFalse Brome
SheepSwine
HorseCattle
Human
PeachPoplar
Rye grass
Turkey
Soy BeanBarleyCitrus
Cotton Rapeseed Spruce
MouseCornPine
Chicken
Dog
TomatoAtlantic Salmon
Grape Vine
Sweet Sorghum
P. falciparum
Zebra Finch
Zebra Fish
Applications
Custom Genotyping on the Infinium Assay
Genome-wide selection
Genetic Prediction
SNP discovery
Commercial Agriculture screening panels
Targeted follow-up studies after GWAS
Targeted disease panels
Targeted rare variant panels
Sample QC and tracking panels
Consumer Genomics
Forensics
The Right Content Lets You Capture More Biology
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BeadArray technology andBeadChip manufacturing
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photo-resist
siliconwafer
plasmaetching
cleaning
Microfabrication of BeadChip Wells
2 µm beads in wells
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Beads and BeadTypes
Full-lengthOligos (~800,000/bead)
Bead
Redundancy: average of ~15 beads per beadtype
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Bead Preparation and Array Production
Unique oligo for each bead type
Bead Pool can be > 1,000,000 bead
types
Random self-assembly of beads
Average ~15 beads per beadtype
Functional validation of array
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Decoder hybridization 2Decoder hybridization 1
Decoder Oligo 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16Decode hyb 1Decode hyb 2
Bead Decoding Example: 16 Bead Types
Generating a .dmap file
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GoldenGate Assay Biochemistry
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GoldenGate Assay: Primer Design
AG
illumiCode’ AddressUniversal PCR Sequence 1
Universal PCR Sequence 2 Universal
PCR Sequence 3
Genomic DNA [T/C] [T/A]
ASOs LSO
Allele Specific Region
Locus Specific Region
(1-20 bp gap)
SNP
3’
3’5’
5’
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Allele-specific extension and ligation
GoldenGate Assay: Biochemistry/Assay Diagram
A
G
illumiCode’ AddressAllele Specific Extension &Ligation
ASO 1Universal
PCR Sequence 3’
Genomic DNA [ T ] LigasePolymerase
ASO 2
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Amplification
GoldenGate Assay: Biochemistry/Assay Diagram
A illumiCode #561Amplification Template
PCR with Common Primers
Cy3 Universal Primer 1
Cy5 Universal Primer 2
Universal Primer P3
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Hybridization to VBP
GoldenGate Assay: Biochemistry/Assay Diagram
/\/\/\
/
/\/\/\
/
/\/\/\
/
illumiCode #561
illumiCode #217
illumiCode #1024
/\/\/\
/
/\/\/\
/
A/A G/G C/T
SNP #561 SNP #217 SNP #1024
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Infinium Assay Biochemistry
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Whole-genome amplification
Optimized WGA reaction minimizes GC bias
Up to 1000-fold amplification
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Fragmentation
Robust endpoint fragmentation
Allows access to vast majority of genome
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Infinium Probes and BeadTypes
ProbeAddressLocus-Specific
~22 bp 50 bp
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Hybridization
A A T C G G
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Single Base Extension
A A T C G GT T A G CC
A
C
T
Gdintrophenol-labeled ddNTPs
biotin-labeled ddNTPs
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Stain
T T A G CC
streptavidin-green
anti-DNP-red
anti-streptavidin-
biotin
anti-Ab-DNP
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Image
T T A G CC
INTE
NS
ITY
INTE
NS
ITY
INTE
NS
ITY
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BeadChip Scanning and SNP Assay Detection
• Input file – .dmap files containing bead locations
• Output file – .idat files containing hybridization intensity data
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BeadStationTo scan BeadChips and generate raw data
Bead Chips
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BeadChip scanning in progress
Each bead translates to raw data for one SNP
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Data Analysis and Genotype Calling using GenomeStudio Software
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Loading Data
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File Types
DECODE*.dmap
INTENSITY DATA*.idat
PROJECT*.bsc
REPORT*.csv
MANIFEST*.bpm or *.opa
SAMPLE SHEET*.csv
CLUSTER*.egt
GenomeStudio
BeadScan or GenomeScan
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Load Data
File Extension Description Source Required?
Data *.idat Contains the mean red and green signal intensities for each bead type
GenomeScan Yes
Manifest *.bpm*.opa
Lists the SNP ID and annotation for each bead type
iCom Yes
Cluster *.egt For each locus, defines the allowable signal intensity ranges for AA, AB, and BB genotypes
iCom /User-created
No
SampleSheet
*.csv For each sample, lists the microtiter plate locations, replicate and family relationship information
User-created No
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Signal intensities for 96 samples at one locusY axis is green signal intensityX axis is red signal intensity
Plotting intensities in Cartesian space
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Normalization
Proprietary normalization algorithm
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SNP Graph - Polar Coordinates
Ө = angle from X axis
R = A + B
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Clustering
GenCall score reflects the distance of a data point to the centroid of a clusterGenCall score is a representation of the confidence with which a genotype call is made
(GenTrain score and data to model fit)Dark shaded regions are call regions (GenCall score > 0.25 for GoldenGate and 0.15 for Infinium)
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An Example of Barley SNP Genotype Calls
A/A B/BA/B
AA
AA BB AA BBAB
Number of individuals with that genotype
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[Header]GSGT Version 1.6.3Processing Date 3/19/2010 11:36Content GS0007511-OPA.opaNum SNPs 1536Total SNPs 1536Num Samples 96Total Samples 96[Data]SNP 09OR-01 09OR-09 09OR-17 09OR-25 09OR-33 09OR-41 09OR-49 09OR-57 09OR-65 09OR-73 09OR-81 09OR-89 09OR-021375-2534 BB BB BB BB BB BB BB BB AA BB AA AA BB5019-879 AA AA AA AA AA AA AA AA BB BB BB BB AA5764-430 AA AA AA AA AA AA AA AA BB AA BB BB AA5128-1831 AA AA AA AA BB AA AA AB AA AA AA AA AA3026-1011 BB BB BB BB BB BB BB AA AA AA BB BB BB4407-1344 BB BB BB BB BB AA AB BB BB BB BB BB BB6157-1233 AA AA AA AA AA AA AA AA AA AA AA AA AA9251-852 AA AA AA AA AA AA AA AA AA AA AA AA AAABC11290-sfp44-06 BB BB AA AB AA AA AA BB AA AA AA AA BB5893-1285 -- AA BB AA BB AA AA AA AA BB BB AB BB2477-377 AA AA AA AA AA AA AA BB BB BB BB BB AA2208-279 AA AA AA AA AA AA AA AA AA AA AA AA AA4434-804 BB AA BB AA AA AA AA AA AA AA AA AA AA1294-473 BB BB BB BB BB BB BB BB BB BB BB BB BBConsensusGBS0234-1 BB BB BB BB BB BB BB BB AA BB BB BB BB1473-1115 AA AA AA AA BB BB AA AA AA AA AA AA AAConsensusGBS0446-1 AA AA AA AA AA BB AA BB BB BB BB BB AAABC01838-2-2-322 AA BB BB AA BB BB BB AA BB BB BB BB BB3443-1234 BB BB BB BB BB BB BB BB BB BB BB BB BBABC08077-pHv131-02 AA AA BB AB BB BB BB AA BB BB BB BB AA3390-205 AA AA AA AA AA AA AA AA AA AA AA AA AA1198-537 AA BB AA BB BB BB BB BB AA -- -- BB AA6460-355 BB BB BB BB BB BB BB BB BB BB BB BB BB2067-775 AA AA BB AA BB BB AA AA AA BB BB AA AA2055-947 AA AA AA AA AA AA AA AA BB AA AA AA AA2802-685 BB BB BB BB BB BB BB BB BB BB BB BB BB3506-668 BB BB BB BB BB BB BB BB BB BB BB BB BB
Genotype Data Report