Unconfigured Ad

Collapse
X
 
  • Time
  • Show
Clear All
new posts
  • pinuscatcus
    Junior Member
    • Apr 2015
    • 1

    #1

    DESeq2 help.. design

    hello all,

    So in my experiment, we have 2 different treatments applied to 2 groups of mice (ctrl vs trt, 5 each). Within each mouse, we took 2 different tissue types (tissue, A and B). We'd like to know basically how trt different (within each tissue type and overall) (I guess after the model design, we will do contrast of various sort?). Since each experimental unit (mice) have 2 tissue types, it would be wise to block on individuals. In essence, we have:
    sampleCondition <- c(
    rep("T",2),
    rep("C",4),
    rep("T",8),
    rep("C",6)
    )

    individual <- c(
    rep("11",2),
    rep("12",2),
    rep("13",2),
    rep("14",2),
    rep("15",2),
    rep("16",2),
    rep("17",2),
    rep("18",2),
    rep("19",2),
    rep("20",2)
    )

    tissue=rep( c("A","B"), 10)

    sampleTable<-data.frame(sampleName=sampleFiles,
    filename=sampleFiles,
    treatment=sampleCondition,
    tissue=tissue,
    individual=individual)

    dds<-DESeqDataSetFromHTSeqCount(sampleTable=sampleTable,
    directory=directory,
    design=~ individual + individual:tissue + individual:treatment
    )

    and also tired:
    design=~ individual + tissue + tissue:treatment

    both of these design gave us:
    Error in DESeqDataSet(se, design = design, ignoreRank) :
    the model matrix is not full rank, so the model cannot be fit as specified.
    one or more variables or interaction terms in the design formula
    are linear combinations of the others and must be removed

    I am stuck here,... sort thinking my model might be wrong? Thanks for any help!
  • Michael Love
    Senior Member
    • Jul 2013
    • 333

    #2
    cross post on Bioc: https://support.bioconductor.org/p/66449/#66479

    We try to discourage cross posting as this duplicates the effort of the people answering questions, or at the least link to the cross post so other viewers can follow the thread.

    Comment

    Latest Articles

    Collapse

    • SEQadmin2
      Multiomic Liquid Biopsy: What DNA/RNA Panels Reveal That DNA Alone Can’t
      by SEQadmin2



      Tumors contain complex mixtures of cell populations that evolve in response to treatment and host-specific factors. Tissue biopsies provide only static snapshots of a tumor’s state. But what if we could follow that evolution over time using a minimally invasive technique?

      Liquid biopsies can detect tumor-derived material circulating in the bloodstream, providing a way to study treatment response, detect emerging resistance, and discover new biomarkers. Circulating
      ...
      10-14-2026, 09:55 AM
    • SEQadmin2
      New Genomics Technologies Take Aim at Long-Standing Limits
      by SEQadmin2


      Researchers using sequencing and genomics tools often have to make trade-offs. They can choose between speed or scale, short reads or long-range information, or targeted panels or a view of the whole transcriptome. New technologies that have been released this year are built to address those tough choices.

      We asked six companies the same four questions to learn about their latest products. The new technologies bring a lot to the table, including rethinking sequencing
      ...
      09-28-2026, 10:25 AM

    ad_right_rmr

    Collapse

    News

    Collapse

    Topics Statistics Last Post
    Started by SEQadmin2, Yesterday, 11:13 AM
    0 responses
    16 views
    0 reactions
    Last Post SEQadmin2  
    Started by SEQadmin2, Yesterday, 10:48 AM
    0 responses
    16 views
    0 reactions
    Last Post SEQadmin2  
    Started by SEQadmin2, 10-15-2026, 10:52 AM
    0 responses
    35 views
    0 reactions
    Last Post SEQadmin2  
    Started by SEQadmin2, 10-14-2026, 05:39 AM
    0 responses
    42 views
    0 reactions
    Last Post SEQadmin2  
    Working...