Cited by 251Single-cell and spatial transcriptomicsGene expression and cancer classificationGenomics and Phylogenetic Studies

Automated methods for cell type annotation on scRNA-seq data

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Pasquini, Giovanni, Rojo Arias, Jesus Eduardo, Schäfer, Patrick, Busskamp, Volker·2021·Computational and Structural Biotechnology Journal

Abstract

The advent of single-cell sequencing started a new era of transcriptomic and genomic research, advancing our knowledge of the cellular heterogeneity and dynamics. Cell type annotation is a crucial step in analyzing single-cell RNA sequencing data, yet manual annotation is time-consuming and partially subjective. As an alternative, tools have been developed for automatic cell type identification. Different strategies have emerged to ultimately associate gene expression profiles of single cells with a cell type either by using curated marker gene databases, correlating reference expression data, or transferring labels by supervised classification. In this review, we present an overview of the available tools and the underlying approaches to perform automated cell type annotations on scRNA-seq data.

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  • Annotation results obtained with pre-trained classifiers are strongly affected by the classifier type and the quality of training data.

    “Annotation results obtained with pre-trained classifiers are strongly affected by the classifier type and the quality of the training data used to create the classifier54,55.”

    From Best practices for single-cell analysis across modalities (2023) · cites this paper as [55]

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Authors
Pasquini, G., Rojo Arias, J. E., Schäfer, P., & Busskamp, V.
Affiliations
  • University of Bonn (DE)
  • Wellcome-MRC Cambridge Stem Cell Institute, Jeffrey Cheah Biomedical Centre, Cambridge Biomedical Campus, University of Cambridge, Cambridge, UK
  • Center for Regenerative Therapies Dresden (DE)
Corresponding author
Busskamp, Volker
Venue
Computational and Structural Biotechnology Journal
Published
2021-01
Volume
19
Pages
961-969
ISSN
2001-0370 (ISSN-L)
OpenAlex
W3124814274
Cited by
249
References
85
Citations by year
2026: 45 · 2025: 62 · 2024: 45 · 2023: 48 · 2022: 35 · 2021: 14
FWCI
3.78
Type
journal article
Language
en
Open access
Locations
  • Computational and Structural Biotechnology Journal (publishedVersion, cc-by-nc-nd)
  • PubMed Central (publishedVersion, cc-by-nc-nd)
  • PubMed (publishedVersion)
  • Apollo (University of Cambridge) (submittedVersion, cc-by-nc-nd)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
  • Apollo
Funders
  • H2020 European Research Council (ERC-StG-678071 – ProNeurons)
  • European Research Council
  • Deutsche Forschungsgemeinschaft (EXC-2068-390729961, SPP2127)
  • Volkswagen Foundation
  • Technische Universität Dresden (EXC-2151-390873048)
  • Rheinische Friedrich-Wilhelms-Universität Bonn
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Single-cell and spatial transcriptomics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Gene expression and cancer classification
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Genomics and Phylogenetic Studies
Keywords
cell type annotation, single-cell RNA sequencing, supervised classification, cellular heterogeneity

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