Gene Expression analysis of Clariom D array
1
0
Entering edit mode
6.8 years ago
raya.girish ▴ 30

Hello All Recently i got clariom D samples As of now i am using TAC (Affymetrix tool)and bioconductor package and comparing results of both My bioconductor code is :

setwd("Path to my cel files")
library(oligo)
library(affycoretools)
library(limma)
library(clariomdhumantranscriptcluster.db)
library(pd.clariom.d.human)
list.celfiles()
T1.cel
T2.cel
T3.cel
C1.cel
C2.cel
C3.cel
dat <- read.celfiles(list.celfiles())

probeset.eset=rma(dat,target="core")

probeset.eset <- annotateEset(probeset.eset,annotation(probeset.eset))

strain <- c("Test","Test","Test","Control","Control","Control")
x <- model.matrix(~factor(strain))
design
colnames(x) <- c("Test vs Control","Control")

>x
Test vs Control Control
1               1       1
2               1       1
3               1       1
4               1       0
5               1       0
6               1       0
attr(,"assign")
[1] 0 1
attr(,"contrasts")
attr(,"contrasts")$`factor(strain)`
"contr.treatment"**



fit3 <- lmFit(probeset.eset,design = x)
fit3<- eBayes(fit3)
options(digits=2)
r6<-topTable(fit = fit3,coef=2, n=10000, adjust="BY")
write.csv(r5,"C://Users/Clariom-D/Clariom_7_17/reult.csv")

When i compare DGE expressing of gene say x from limma pipeline i am getting value -1.91 and from TAC software i am getting value -13

Why there is so much difference between the two? Which pipeline should i consider to be better?

Is there any mistake i am doing if so what that mistake is and how to rectify?

sessionInfo()
R version 3.3.3 (2017-03-06)
Platform: x86_64-w64-mingw32/x64 (64-bit)
Running under: Windows >= 8 x64 (build 9200)

locale:
[1] LC_COLLATE=English_United States.1252  LC_CTYPE=English_United States.1252   
[3] LC_MONETARY=English_United States.1252 LC_NUMERIC=C                          
[5] LC_TIME=English_United States.1252    

attached base packages:
[1] stats4    parallel  stats     graphics  grDevices utils     datasets  methods   base     

other attached packages:
 [1] pd.clariom.d.human_3.14.1               DBI_0.7                                
 [3] RSQLite_2.0                             clariomdhumantranscriptcluster.db_8.5.0
 [5] org.Hs.eg.db_3.4.0                      AnnotationDbi_1.36.2                   
 [7] limma_3.30.13                           affycoretools_1.46.5                   
 [9] oligo_1.38.0                            Biostrings_2.42.1                      
[11] XVector_0.14.1                          IRanges_2.8.2                          
[13] S4Vectors_0.12.2                        Biobase_2.34.0                         
[15] oligoClasses_1.36.0                     BiocGenerics_0.20.0                    

loaded via a namespace (and not attached):
  [1] colorspace_1.3-2              hwriter_1.3.2                
  [3] biovizBase_1.22.0             htmlTable_1.9                
  [5] GenomicRanges_1.26.4          base64enc_0.1-3              
  [7] dichromat_2.0-0               affyio_1.44.0                
  [9] bit64_0.9-7                   interactiveDisplayBase_1.12.0
 [11] codetools_0.2-15              splines_3.3.3                
 [13] R.methodsS3_1.7.1             ggbio_1.22.4                 
 [15] geneplotter_1.52.0            knitr_1.16                   
 [17] Formula_1.2-2                 Rsamtools_1.26.2             
 [19] annotate_1.52.1               cluster_2.0.5                
 [21] GO.db_3.4.0                   R.oo_1.21.0                  
 [23] graph_1.52.0                  shiny_1.0.3                  
 [25] httr_1.2.1                    GOstats_2.40.0               
 [27] backports_1.1.0               Matrix_1.2-8                 
 [29] lazyeval_0.2.0                acepack_1.4.1                
 [31] htmltools_0.3.6               tools_3.3.3                  
 [33] affy_1.52.0                   gtable_0.2.0                 
 [35] Category_2.40.0               reshape2_1.4.2               
 [37] affxparser_1.46.0             Rcpp_0.12.12                 
 [39] gdata_2.18.0                  preprocessCore_1.36.0        
 [41] rtracklayer_1.34.2            iterators_1.0.8              
 [43] stringr_1.2.0                 mime_0.5                     
 [45] ensembldb_1.6.2               gtools_3.5.0                 
 [47] XML_3.98-1.9                  AnnotationHub_2.6.5          
 [49] edgeR_3.16.5                  zlibbioc_1.20.0              
 [51] scales_0.4.1                  BSgenome_1.42.0              
 [53] VariantAnnotation_1.20.3      BiocInstaller_1.24.0         
 [55] SummarizedExperiment_1.4.0    RBGL_1.50.0                  
 [57] RColorBrewer_1.1-2            yaml_2.1.14                  
 [59] memoise_1.1.0                 gridExtra_2.2.1              
 [61] ggplot2_2.2.1                 biomaRt_2.30.0               
 [63] rpart_4.1-10                  gcrma_2.46.0                 
 [65] reshape_0.8.6                 latticeExtra_0.6-28          
 [67] stringi_1.1.5                 genefilter_1.56.0            
 [69] foreach_1.4.3                 checkmate_1.8.3              
 [71] caTools_1.17.1                GenomicFeatures_1.26.4       
 [73] BiocParallel_1.8.2            GenomeInfoDb_1.10.3          
 [75] ReportingTools_2.14.0         rlang_0.1.1                  
 [77] pkgconfig_2.0.1               bitops_1.0-6                 
 [79] lattice_0.20-34               GenomicAlignments_1.10.1     
 [81] htmlwidgets_0.9               bit_1.1-12                   
 [83] GSEABase_1.36.0               AnnotationForge_1.16.1       
 [85] GGally_1.3.1                  plyr_1.8.4                   
 [87] magrittr_1.5                  DESeq2_1.14.1                
 [89] R6_2.2.2                      gplots_3.0.1                 
 [91] Hmisc_4.0-3                   foreign_0.8-67               
 [93] survival_2.41-3               RCurl_1.95-4.8               
 [95] nnet_7.3-12                   tibble_1.3.3                 
 [97] KernSmooth_2.23-15            OrganismDbi_1.16.0           
 [99] PFAM.db_3.4.0                 locfit_1.5-9.1               
[101] grid_3.3.3                    data.table_1.10.4            
[103] blob_1.1.0                    digest_0.6.12                
[105] xtable_1.8-2                  ff_2.2-13                    
[107] httpuv_1.3.5                  R.utils_2.5.0                
[109] munsell_0.4.3
Clariom D Gene Expression • 3.8k views
ADD COMMENT
0
Entering edit mode
4.0 years ago

Hi, I am only providing an answer because I happen to be processing a Clariom array.

It could be related to many things, one being a different normalisation procedure: A: RMA with Affymetrix Expression Console vs Oligo package

Kevin

ADD COMMENT

Login before adding your answer.

Traffic: 2502 users visited in the last hour
Help About
FAQ
Access RSS
API
Stats

Use of this site constitutes acceptance of our User Agreement and Privacy Policy.

Powered by the version 2.3.6