4.8 Article

A unified computational framework for single-cell data integration with optimal transport

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NATURE COMMUNICATIONS
卷 13, 期 1, 页码 -

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NATURE PORTFOLIO
DOI: 10.1038/s41467-022-35094-8

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资金

  1. National Key Research and Development Program of China [2019YFA0709501]
  2. National Natural Science Foundation of China [61733018, 62173250, 12071466]
  3. Shanghai Municipal Science and Technology Major Project [2021SHZDZX0100]
  4. Fundamental Research Funds for the Central Universities [22120200046]

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uniPort is a unified single-cell data integration framework that leverages different methods to handle heterogeneous data, constructs a shared latent space and reference atlas, and provides a label transfer framework for deconvolution of spatially resolved transcriptomic data without embedding latent space.
Single-cell data integration can provide a comprehensive molecular view of cells. However, how to integrate heterogeneous single-cell multi-omics as well as spatially resolved transcriptomic data remains a major challenge. Here we introduce uniPort, a unified single-cell data integration framework that combines a coupled variational autoencoder (coupled-VAE) and minibatch unbalanced optimal transport (Minibatch-UOT). It leverages both highly variable common and dataset-specific genes for integration to handle the heterogeneity across datasets, and it is scalable to large-scale datasets. uniPort jointly embeds heterogeneous single-cell multi-omics datasets into a shared latent space. It can further construct a reference atlas for gene imputation across datasets. Meanwhile, uniPort provides a flexible label transfer framework to deconvolute heterogeneous spatial transcriptomic data using an optimal transport plan, instead of embedding latent space. We demonstrate the capability of uniPort by applying it to integrate a variety of datasets, including single-cell transcriptomics, chromatin accessibility, and spatially resolved transcriptomic data.

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