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ACTINN: automated identification of cell types in single cell RNA sequencing
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Abstract
Abstract Cell type identification is one of the major goals in single cell RNA sequencing (scRNA-seq). Current methods for assigning cell types typically involve the use of unsupervised clustering, the identification of signature genes in each cluster, followed by a manual lookup of these genes in the literature and databases to assign cell types. However, there are several limitations associated with these approaches, such as unwanted sources of variation that influence clustering and a lack of canonical markers for certain cell types. Here, we present ACTINN (Automated Cell Type Identification using Neural Networks), which employs a neural network with 3 hidden layers, trains on datasets with predefined cell types, and predicts cell types for other datasets based on the trained parameters. We trained the neural network on a mouse cell type atlas (Tabula Muris Atlas) and a human immune cell dataset, and used it to predict cell types for mouse leukocytes, human PBMCs and human T cell sub types. The results showed that our neural network is fast and accurate, and should therefore be a useful tool to complement existing scRNA-seq pipelines. Author Summary Single cell RNA sequencing (scRNA-seq) provides high resolution profiling of the transcriptomes of individual cells, which inevitably results in high volumes of data that require complex data processing pipelines. Usually, one of the first steps in the analysis of scRNA-seq is to assign individual cells to known cell types. To accomplish this, traditional methods first group the cells into different clusters, then find marker genes, and finally use these to manually assign cell types for each cluster. Thus these methods require prior knowledge of cell type canonical markers, and some level of subjectivity to make the cell type assignments. As a result, the process is often laborious and requires domain specific expertise, which is a barrier for inexperienced users. By contrast, our neural network ACTINN automatically learns the features for each predefined cell type and uses these features to predict cell types for individual cells. This approach is computationally efficient and requires no domain expertise of the tissues being studied. We believe ACTINN allows users to rapidly identify cell types in their datasets, thus rendering the analysis of their scRNA-seq datasets more efficient.
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“Furthermore, the parameter settings of HVG selection and PCA in these methods are far to reach a consensus and inevitably introduce artificial bias for performance evaluation 15- 19 .”
From scBERT as a Large-scale Pretrained Deep Language Model for Cell Type Annotation of Single-cell RNA-seq Data (2021) · cites this paper as [15]
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Metadata
- Authors
- Ma, F., & Pellegrini, M.
- Affiliations
- University of California, Los Angeles (US)
- Corresponding author
- Pellegrini, Matteo
- Venue
- Bioinformatics
- Publisher
- Oxford University Press (OUP)
- Published
- 2019-07-29
- Volume
- 36
- Issue
- 2
- Pages
- 533-538
- ISSN
- 1367-4803 (ISSN-L)
- 1367-4811
- OpenAlex
- W2964643116
- Cited by
- 252
- References
- 12
- Citations by year
- 2026: 25 · 2025: 46 · 2024: 45 · 2023: 40 · 2022: 36 · 2021: 35 · 2020: 20 · 2019: 5
- FWCI
- 7.94
- Type
- journal article
- Language
- en
- Open access
- green
- doi.org
- Licence
- academic.oup.com/journals/pages/open_access/funder_policies/chorus/standard_publication_model (vor)
- Locations
- Bioinformatics (publishedVersion)
- bioRxiv (Cold Spring Harbor Laboratory) (acceptedVersion)
- PubMed (publishedVersion)
- OSTI OAI (U.S. Department of Energy Office of Scientific and Technical Information) (submittedVersion)
- Funders
- U.S. Department of Energy Office of Science
- Office of Biological and Environmental Research (DE-FC02-02ER63421)
- 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 › Biophysics › Cell Image Analysis Techniques
- Keywords
- cell type annotation, single-cell RNA sequencing, neural network classification, human peripheral blood mononuclear cells, T cell subsets, immune cell classification, cell type atlas
- MeSH terms
- Algorithms, Animals, Humans, Cluster Analysis, Sequence Analysis, RNA, Gene Expression Profiling, Mice, Single-Cell Analysis
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