Cited by 1,551Single-cell and spatial transcriptomicsBioinformatics and Genomic NetworksGenomics and Phylogenetic Studies

PanglaoDB: a web server for exploration of mouse and human single-cell RNA sequencing data

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Franzén, Oscar, Gan, Li-Ming, Björkegren, Johan L M·2019·Database

Abstract

Single-cell RNA sequencing is an increasingly used method to measure gene expression at the single cell level and build cell-type atlases of tissues. Hundreds of single-cell sequencing datasets have already been published. However, studies are frequently deposited as raw data, a format difficult to access for biological researchers due to the need for data processing using complex computational pipelines. We have implemented an online database, PanglaoDB, accessible through a user-friendly interface that can be used to explore published mouse and human single cell RNA sequencing studies. PanglaoDB contains pre-processed and pre-computed analyses from more than 1054 single-cell experiments covering most major single cell platforms and protocols, based on more than 4 million cells from a wide range of tissues and organs. The online interface allows users to query and explore cell types, genetic pathways and regulatory networks. In addition, we have established a community-curated cell-type marker compendium, containing more than 6000 gene-cell-type associations, as a resource for automatic annotation of cell types.

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  • Cell type annotations were supported by expression patterns of curated marker genes.

    “Annotations were supported by expression patterns of curated marker genes16,17 (Extended Data Fig. 1e; Supplementary Table S2).”
  • Unannotated clusters in human skin tumor scRNA-seq were manually annotated via established marker gene expression and clonal copy number variation profiles.

    “Unannotated clusters (presumed to reflect one of tumor, cancer-associated fibroblast or endothelial cells) were manually annotated via established marker gene expression98 and clonal copy number variation profiles, examined using the inferCNV114 package for R.”
  • Four housekeeping genes (GUSB, PPIA, RPL15, RPL19) with minimal variation on GC treatment were selected for RT-PCR normalization on the basis of a literature review and differential expression analysis in ENCODE RNA-seq data.

    “Four housekeeping genes (GUSB, PPIA, RPL15, RPL19) with minimal variation on GC treatment were selected on the basis of a literature review98 and differential expression analysis in ENCODE RNA-seq data (accession ENCSR897XFT), implemented in edgeR.”

    From Cystatin C is glucocorticoid responsive, directs recruitment of Trem2+ macrophages, and predicts failure of cancer immunotherapy (2023) · cites this paper as [98]

    The Results and discussion section describes an index of genes involved in housekeeping tasks, but does not identify GUSB, PPIA, RPL15, or RPL19 as RT-PCR normalization genes. Searches for those genes, GC-treatment stability, a literature review supporting their selection, and the specified ENCODE analysis found no passage addressing the attributed selection; the paper’s Materials and methods instead describes single-cell RNA-seq analyses. (LLM, conf=0.76)

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Authors
Franzén, O., Gan, L.-M., & Björkegren, J. L. M.
Affiliations
  • Karolinska Institutet (SE)
  • AstraZeneca (Sweden) (SE)
Corresponding author
Franzén, Oscar
Venue
Database
Published
2019-01-01
Volume
2019
ISSN
1758-0463 (ISSN-L)
OpenAlex
W2931036699
Cited by
1,551
References
42
Citations by year
2026: 231 · 2025: 336 · 2024: 314 · 2023: 258 · 2022: 191 · 2021: 144 · 2020: 71 · 2019: 6
FWCI
34.26
Type
journal article
Language
en
Open access
Locations
  • Database (publishedVersion, cc-by)
  • Europe PMC (PubMed Central) (publishedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
Funders
  • Karolinska Institutet
  • AstraZeneca Integrated Cardio Metabolic Centre
  • Fondation Leducq—Transantlantic PlaqOmics Network
  • Hjärt-och Lungfonden (20170265)
  • Vetenskapsrådet (2018-02529)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Single-cell and spatial transcriptomics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Bioinformatics and Genomic Networks
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Genomics and Phylogenetic Studies
Keywords
single-cell RNA sequencing, web server, mice, human, cell type atlas, cell type markers, cell type annotation, gene regulatory networks, gene pathways, gene expression in tissues
MeSH terms
RNA-Seq, Animals, Humans, RNA, Databases, Nucleic Acid, Mice

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