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A novel batch-effect correction method for scRNA-seq data based on Adversarial Information Factorization

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  • Lily Monnier
  • Paul-Henry Cournède

Abstract

Single-cell RNA sequencing (scRNA-seq) technology produces an unprecedented resolution at the level of a unique cell, raising great hopes in medicine. Nevertheless, scRNA-seq data suffer from high variations due to the experimental conditions, called batch effects, preventing any aggregated downstream analysis. Adversarial Information Factorization provides a robust batch-effect correction method that does not rely on prior knowledge of the cell types nor a specific normalization strategy while being adapted to any downstream analysis task. It compares to and even outperforms state-of-the-art methods in several scenarios: low signal-to-noise ratio, batch-specific cell types with few cells, and a multi-batches dataset with imbalanced batches and batch-specific cell types. Moreover, it best preserves the relative gene expression between cell types, yielding superior differential expression analysis results. Finally, in a more complex setting of a Leukemia cohort, our method preserved most of the underlying biological information for each patient while aligning the batches, improving the clustering metrics in the aggregated dataset.Author summary: Single-cell RNA sequencing captures the signal of individual cells, allowing a finer resolution than bulk sequencing, which is particularly important for studies comprising rare populations like tumor heterogeneity or lineage tracing studies. However, it is sensitive to the experimental conditions, which induce a bias in the data, called batch effects. Those technical variations hinder any aggregated analysis, limiting scRNA-seq to individual trials. To address this issue, we developed a novel Deep-Learning method called Adversarial Information Factorization, which aims at factorizing the batch effects from the biological signal to align the individual trials for downstream aggregated analysis. The model is trained to learn the batch-conditional cells’ distributions and then corrects batch effects by projecting all cells onto the same batch distribution.

Suggested Citation

  • Lily Monnier & Paul-Henry Cournède, 2024. "A novel batch-effect correction method for scRNA-seq data based on Adversarial Information Factorization," PLOS Computational Biology, Public Library of Science, vol. 20(2), pages 1-22, February.
  • Handle: RePEc:plo:pcbi00:1011880
    DOI: 10.1371/journal.pcbi.1011880
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    References listed on IDEAS

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    1. Xiangjie Li & Kui Wang & Yafei Lyu & Huize Pan & Jingxiao Zhang & Dwight Stambolian & Katalin Susztak & Muredach P. Reilly & Gang Hu & Mingyao Li, 2020. "Deep learning enables accurate clustering with batch effect removal in single-cell RNA-seq analysis," Nature Communications, Nature, vol. 11(1), pages 1-14, December.
    2. Xiangyu Luo & Yingying Wei, 2019. "Batch Effects Correction with Unknown Subtypes," Journal of the American Statistical Association, Taylor & Francis Journals, vol. 114(526), pages 581-594, April.
    3. Jeffrey T Leek & John D Storey, 2007. "Capturing Heterogeneity in Gene Expression Studies by Surrogate Variable Analysis," PLOS Genetics, Public Library of Science, vol. 3(9), pages 1-12, September.
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