Cited by 4,490Single-cell and spatial transcriptomicsDevelopmental Biology and Gene RegulationGenomics and Chromatin Dynamics

The DOI matches its Crossref record; 68 of the 69 references it cites were found in a registry or an index, and 1 are not checked yet; none of the 31 sources its claims cite is checked for support yet.

The single-cell transcriptional landscape of mammalian organogenesis

Open access

Abstract

Mammalian organogenesis is a remarkable process. Within a short timeframe, the cells of the three germ layers transform into an embryo that includes most of the major internal and external organs. Here we investigate the transcriptional dynamics of mouse organogenesis at single-cell resolution. Using single-cell combinatorial indexing, we profiled the transcriptomes of around 2 million cells derived from 61 embryos staged between 9.5 and 13.5 days of gestation, in a single experiment. The resulting ‘mouse organogenesis cell atlas’ (MOCA) provides a global view of developmental processes during this critical window. We use Monocle 3 to identify hundreds of cell types and 56 trajectories, many of which are detected only because of the depth of cellular coverage, and collectively define thousands of corresponding marker genes. We explore the dynamics of gene expression within cell types and trajectories over time, including focused analyses of the apical ectodermal ridge, limb mesenchyme and skeletal muscle. Data from single-cell combinatorial-indexing RNA-sequencing analysis of 2 million cells from mouse embryos between embryonic days 9.5 and 13.5 are compiled in a cell atlas of mouse organogenesis, which provides a global view of developmental processes occurring during this critical period.

Checked 2026-10-07 · 1 reference not checked yet

Overview

AI snapshot

Written from the paper’s full text.

TL;DR

This paper uses sci-RNA-seq3 to profile ~2 million cells from 61 mouse embryos staged E9.5–E13.5, producing the mouse organogenesis cell atlas (MOCA) of mid-gestational development. It identifies 38 major cell types, 572 non-doublet subtypes, and 56 developmental subtrajectories, with focused analyses of the apical ectodermal ridge and skeletal myogenesis.

Key findings

  • From one experiment, the authors recovered 2,058,652 mouse embryo cells plus 13,359 HEK293T/NIH/3T3 control cells, with a median of 35,272 cells per embryo; sequencing was shallow (~5,000 raw reads per cell) but yielded a median of 671 UMIs (519 genes) per cell.
  • MOCA contains 38 major cell types, 655 subclusters (572 non-doublet subtypes), and 56 developmental subtrajectories; 17,789 of 26,183 genes were differentially expressed across major cell types, including 2,863 cell type-specific marker genes.
  • Monocle 3 organized 1,524,792 high-quality cells (UMI > 400) into ten major trajectories, and the study matched 96 MCA fetal cell types to 58 MOCA subtypes and 48 BCA cell types to 68 MOCA subtypes.
  • Focused analyses identified AER subtype 6.23 (1,237 cells; 0.06% of MOCA) with novel markers Fndc3a, Adamts3, Slc16a10, Snap91, and Pou6f2, and a myogenic trajectory with 2,908 trajectory-dependent genes grouped into 14 patterns.

Methods

  • Nuclei were extracted from 61 C57BL/6 mouse embryos at E9.5, E10.5, E11.5, E12.5, or E13.5, fixed, and processed with sci-RNA-seq3 combinatorial indexing; the library was sequenced in one Illumina NovaSeq run yielding 11 billion reads.
  • Cells with UMI ≥ 200 were analyzed by Louvain clustering and t-SNE, followed by iterative subclustering; Scrublet was used for doublet detection, and marker genes were identified by differential expression.
  • Trajectory inference used Monocle 3 with UMAP, PAGA/Louvain partitioning, principal graph learning, pseudotime, and Moran’s I; whole-mount in situ hybridization validated selected markers.

Limitations

  • Paper-stated: only ~7% of cells entering the experiment were ultimately profiled, largely due to filtration steps; the matrix is sparse, the study does not exceed 1-fold coverage at any timepoint, and extremely rare cell types may be missed.
  • Paper-stated: annotations are preliminary because mid-gestational mouse development has not been extensively studied at single-cell resolution, many published markers have limited specificity, and whole disaggregated embryos make anatomical assignment challenging.
  • Evident from the text: sequencing was shallow (~5,000 raw reads per cell; median 671 UMIs), nuclear profiles were primarily intronic/nascent (59% intronic, 25% exonic), the estimated doublet rate was 10.3%, 13% of subtypes were annotated as likely artifacts, and trajectory discontinuity likely reflects missing ancestral states before E9.5.

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Integrity signals

Registry

Crossref · 10.1038/s41586-019-0969-x

Cites

68 of 69 references verified0 citation errors · 0 not checkable

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Claims the paper makes

86 Own result · 27 Not checked yet · 18 Own interpretation · 17 Own method · 6 No basis given

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  • It may state two separate claims as one. 43
  • Probably not a substantial claim. 30
  • The quote only partly states this claim. 1
66 of 66
  • The authors state this as an assumption.

    About 100 cells are required to detect a cell type.

    “Assuming that ~100 cells are required to detect a cell type”
  • The authors state this as an assumption.

    The cell type in question is present at only one timepoint.

    “and that the cell type in question is only present at one timepoint”
  • The authors state this as an assumption.

    Gene expression follows a negative binomial distribution in the AER spline fitting.

    “assuming gene expression following the negative binomial distribution”
3 of 3

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Metadata

Authors
Cao, J., Spielmann, M., Qiu, X., Huang, X., Ibrahim, D. M., Hill, A. J., Zhang, F., Mundlos, S., Christiansen, L., Steemers, F. J., Trapnell, C., & Shendure, J.
Affiliations
  • University of Washington (US)
  • Max Planck Institute for Molecular Genetics (DE)
  • Illumina (United States) (US)
  • Howard Hughes Medical Institute (US)
Corresponding author
  • Trapnell, Cole
  • Shendure, Jay
Venue
Nature
Published
2019-02-20
Volume
566
Issue
7745
Pages
496-502
ISSN
  • 0028-0836 (ISSN-L)
  • 1476-4687
OpenAlex
W2916020270
Cited by
4,490
References
64
Citations by year
2026: 797 · 2025: 901 · 2024: 809 · 2023: 645 · 2022: 568 · 2021: 421 · 2020: 267 · 2019: 76
FWCI
111.88
Type
journal article
Language
en
Open access
Locations
  • Nature (publishedVersion)
  • PubMed (publishedVersion)
  • Europe PMC (PubMed Central) (acceptedVersion)
  • PubMed Central (acceptedVersion)
  • RePEc: Research Papers in Economics (submittedVersion)
Funders
  • Howard Hughes Medical Institute
  • National Heart, Lung, and Blood Institute (R01HL118342, U54HL145611)
  • National Human Genome Research Institute (DP1HG007811, R01HG006283)
  • National Institute of Diabetes and Digestive and Kidney Diseases (U54DK107979)
  • Eunice Kennedy Shriver National Institute of Child Health and Human Development (DP2HD088158)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Single-cell and spatial transcriptomics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Developmental Biology and Gene Regulation
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Genomics and Chromatin Dynamics
Keywords
mouse embryo, single-cell transcriptomics, cell atlas, developmental trajectories, cell types, marker genes, apical ectodermal ridge, limb mesenchyme, skeletal muscle development, gene expression dynamics, three germ layers
MeSH terms
Animals, Ectoderm, Embryo, Mammalian, Female, Genetic Markers, Male, Mesoderm, Organ Specificity, Time Factors, Sequence Analysis, RNA, Muscle, Skeletal, Gene Expression Regulation, Developmental, Muscle Development, Organogenesis, Mice, Single-Cell Analysis, Transcriptome

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