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  • RNA-seq of mouse samples - experimental design suggestions

    Hi there,
    we have some mouse models with knock out of some genes. Basically we will have at least 3 different mouse genotypes. And there certainly will be discussions how similar are the samples among genotype group (male/female, relatives, age). We are deciding about RNAseq that we has not done before so my group have no experience in it. So any help in the design phase will be highly appreciated.

    We would like to perform RNA-seq in order to answer these questions:
    • How the knock out genes affect resulting rna transcripts forms?
    • Are there also differences in rRNA or microRNA?
    • We are not too much interested in differential expression as of suggestion of my chief.


    I would like to ask on this forum few questions regarding experimental design.
    • Do you think that sequencing whole RNA and not only mRNA is reasonable? What to expect if we do that? Do you have experience with that and are there some analytical approaches for such data?
    • We will have paired end rapid run sequencing on Illumina Hi-Seq 2500. What the sequencing depth should be? And if we want to achieve given sequencing depth (i.e. 1000x) how much sequencing capacity should we allocate per sample?
    • Is it sufficient to have biological replicates or technical replicates are also needed? If we have three genotypes how many samples per genotype is sufficient to perform any meaningful analysis of differential transcript forms in different genotypes?


    Thank you for answers,
    Vojtech.
    Data analysis www.persmed.eu

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