Transforming stranded RNA-Seq libraries in unstranded
I want to detect differential gene expression by comparing two different RNA-Seq libraries, however one of them is stranded and the other one is unstranded. I know that unstranded libraries overrate the expression of RNAs that have a anti-sense transcript.
In order to eliminate this bias, can I align the stranded library in STAR as if it were a unstranded library? Will it eliminate the bias, or there is another factor that introduces a bias that prevents me from comparing these two libraries?
Thank you!
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Antonio Camargo
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Antonio Camargo
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As the library preparation of the two sets is different such a comparison would likely be invalid.
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It might be worth checking for your condition of interest exactly how much antisense transcription is going on.
I'm filtering for lincRNAs in both libraries and them I'll check differential expression for each lincRNA.