SCRIP: an accurate simulator for single-cell RNA sequencing data

Bioinformatics. 2021 Dec 7;btab824. doi: 10.1093/bioinformatics/btab824. Online ahead of print.

Abstract

Motivation: Recent advancements in single-cell RNA sequencing (scRNA-seq) have enabled time-efficient transcriptome profiling in individual cells. To optimize sequencing protocols and develop reliable analysis methods for various application scenarios, solid simulation methods for scRNA-seq data are required. However, due to the noisy nature of scRNA-seq data, currently available simulation methods cannot sufficiently capture and simulate important properties of real data, especially the biological variation. In this study, we developed SCRIP, a novel simulator for scRNA-seq that is accurate and enables simulation of bursting kinetics.

Results: Compared to existing simulators, SCRIP showed a significantly higher accuracy of stimulating key data features, including mean-variance dependency in all experiments. SCRIP also outperformed other methods in recovering cell-cell distances. The application of SCRIP in evaluating differential expression analysis methods showed that edgeR outperformed other examined methods in differential expression analyses, and ZINB-WaVE improved the AUC at high dropout rates. Collectively, this study provides the research community with a rigorous tool for scRNA-seq data simulation.

Availability and implementation: https://CRAN.R-project.org/package=SCRIP.

Supplementary information: Supplementary files are available at Bioinformatics online.