Internal and external normalization of nascent RNA sequencing run-on experiments.
Internal and external normalization of nascent RNA sequencing run-on experiments.
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DOI:
10.1186/s12859-023-05607-3
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发表时间:
2024-01-12
影响因子:
3
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中科院分区:
文献类型:
--
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In experiments with significant perturbations to transcription, nascent RNA sequencing protocols are dependent on external spike-ins for reliable normalization. Unlike in RNA-seq, these spike-ins are not standardized and, in many cases, depend on a run-on reaction that is assumed to have constant efficiency across samples. To assess the validity of this assumption, we analyze a large number of published nascent RNA spike-ins to quantify their variability across existing normalization methods. Furthermore, we develop a new biologically-informed Bayesian model to estimate the error in spike-in based normalization estimates, which we term Virtual Spike-In (VSI). We apply this method both to published external spike-ins as well as using reads at the end of long genes, building on prior work from Mahat (Mol Cell 62(1):63–78, 2016. 10.1016/j.molcel.2016.02.025) and Vihervaara (Nat Commun 8(1):255, 2017. 10.1038/s41467-017-00151-0). We find that spike-ins in existing nascent RNA experiments are typically under sequenced, with high variability between samples. Furthermore, we show that these high variability estimates can have significant downstream effects on analysis, complicating biological interpretations of results. The online version contains supplementary material available at 10.1186/s12859-023-05607-3.
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影响因子:
8.8
作者:
Barbieri E;Hill C;Quesnel-Vallières M;Zucco AJ;Barash Y;Gardini A
通讯作者:
Gardini A
影响因子:
13.6
作者:
Fan, Zheng;Devlin, Jennifer R.;Johnstone, Ricky W.
通讯作者:
Johnstone, Ricky W.
影响因子:
2.1
作者:
Johnson, W. Evan;Li, Cheng;Rabinovic, Ariel
通讯作者:
Rabinovic, Ariel
影响因子:
2.7
作者:
HASTINGS, WK
通讯作者:
HASTINGS, WK
影响因子:
48
作者:
Herzog VA;Reichholf B;Neumann T;Rescheneder P;Bhat P;Burkard TR;Wlotzka W;von Haeseler A;Zuber J;Ameres SL
通讯作者:
Ameres SL