Approaches for sRNA Analysis of Human RNA-Seq Data: Comparison, Benchmarking

Bezuglov, V.; Stupnikov, A.; Skakov, I.; Shtratnikova, V.; Pilsner, J.R.; Suvorov, A.; Sergeyev, O.

Авторы: Bezuglov Vitalik, Stupnikov Alexey, Skakov Ivan, Shtratnikova Victoria, Pilsner J.Richard, Suvorov Alexander, Sergeyev Oleg
Журнал: International Journal of Molecular Sciences
Том: 24
Номер: 4
Год издания: 2023
Издательство: MDPI
Местоположение издательства: Basel, Switzerland
Первая страница: 4195
DOI: 10.3390/ijms24044195
Аннотация: Expression analysis of small noncoding RNA (sRNA), including microRNA, piwi-interacting RNA, small rRNA-derived RNA, and tRNA-derived small RNA, is a novel and quickly developing field. Despite a range of proposed approaches, selecting and adapting a particular pipeline for transcriptomic analysis of sRNA remains a challenge. This paper focuses on the identification of the optimal pipeline configurations for each step of human sRNA analysis, including reads trimming, filtering, mapping, transcript abundance quantification and differential expression analysis. Based on our study, we suggest the following parameters for the analysis of human sRNA in relation to categorical analyses with two groups of biosamples: (1) trimming with the lower length bound = 15 and the upper length bound = Read length − 40% Adapter length; (2) mapping on a reference genome with bowtie aligner with one mismatch allowed (-v 1 parameter); (3) filtering by mean threshold > 5; (4) analyzing differential expression with DESeq2 with adjusted p-value < 0.05 or limma with p-value < 0.05 if there is very little signal and few transcripts.
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