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scBridge embraces cell heterogeneity in single-cell RNA-seq and ATAC-seq data integration

Author

Listed:
  • Yunfan Li

    (Sichuan University)

  • Dan Zhang

    (West China Second University Hospital, Sichuan University)

  • Mouxing Yang

    (Sichuan University)

  • Dezhong Peng

    (Sichuan University)

  • Jun Yu

    (Hangzhou Dianzi University)

  • Yu Liu

    (Naval Aviation University)

  • Jiancheng Lv

    (Sichuan University)

  • Lu Chen

    (West China Second University Hospital, Sichuan University)

  • Xi Peng

    (Sichuan University)

Abstract

Single-cell multi-omics data integration aims to reduce the omics difference while keeping the cell type difference. However, it is daunting to model and distinguish the two differences due to cell heterogeneity. Namely, even cells of the same omics and type would have various features, making the two differences less significant. In this work, we reveal that instead of being an interference, cell heterogeneity could be exploited to improve data integration. Specifically, we observe that the omics difference varies in cells, and cells with smaller omics differences are easier to be integrated. Hence, unlike most existing works that homogeneously treat and integrate all cells, we propose a multi-omics data integration method (dubbed scBridge) that integrates cells in a heterogeneous manner. In brief, scBridge iterates between i) identifying reliable scATAC-seq cells that have smaller omics differences, and ii) integrating reliable scATAC-seq cells with scRNA-seq data to narrow the omics gap, thus benefiting the integration for the rest cells. Extensive experiments on seven multi-omics datasets demonstrate the superiority of scBridge compared with six representative baselines.

Suggested Citation

  • Yunfan Li & Dan Zhang & Mouxing Yang & Dezhong Peng & Jun Yu & Yu Liu & Jiancheng Lv & Lu Chen & Xi Peng, 2023. "scBridge embraces cell heterogeneity in single-cell RNA-seq and ATAC-seq data integration," Nature Communications, Nature, vol. 14(1), pages 1-14, December.
  • Handle: RePEc:nat:natcom:v:14:y:2023:i:1:d:10.1038_s41467-023-41795-5
    DOI: 10.1038/s41467-023-41795-5
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    References listed on IDEAS

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    1. Shelley L. Berger, 2007. "The complex language of chromatin regulation during transcription," Nature, Nature, vol. 447(7143), pages 407-412, May.
    2. Mahdi Zamanighomi & Zhixiang Lin & Timothy Daley & Xi Chen & Zhana Duren & Alicia Schep & William J. Greenleaf & Wing Hung Wong, 2018. "Unsupervised clustering and epigenetic classification of single cells," Nature Communications, Nature, vol. 9(1), pages 1-8, December.
    3. Christoph Kuppe & Ricardo O. Ramirez Flores & Zhijian Li & Sikander Hayat & Rebecca T. Levinson & Xian Liao & Monica T. Hannani & Jovan Tanevski & Florian Wünnemann & James S. Nagai & Maurice Halder &, 2022. "Spatial multi-omic map of human myocardial infarction," Nature, Nature, vol. 608(7924), pages 766-777, August.
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