Evidence map›Paper›PMID 36240767›Full record

ArticleNeuron2022

Neuronal ambient RNA contamination causes misinterpreted and masked cell types in brain single-nuclei datasets.

Emre Caglayan, Yuxiang Liu, Genevieve Konopka

Abstract read
In one paragraph

Article in Neuron, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 69 papers.

0numbers the graph read from it
0cells of the map it votes in
69citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

69 citing papers in PubMed.

  1. Article
  2. Article
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  4. A who's who of cell types in skeletal muscle.Communications biology · 2026
    Review
  5. Distinct single-nucleus RNA-seq changes among non-neuronal cells in ADNC, LATE-NC, and mixed pathologies.Alzheimer's & dementia : the journal of the Alzheimer's Association · 2026
    Article
  6. Article
  7. Article
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  13. Spatiotemporal dynamics of adoptively transferred stem-like CD8bioRxiv : the preprint server for biology · 2026
    Article
  14. Article
  15. Article
  16. Article
  17. Review
  18. Review
  19. Review
  20. Article

9 more citing papers are in PubMed but not listed here.

4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

3 authors.

Emre CaglayanDepartment of Neuroscience, UT Southwestern Medical Center, Dallas, TX 75390, USA; Peter O'Donnell Jr. Brain Institute, UT Southwestern Medical Center, Dallas, TX 75390, USA. Electronic address: emre.caglayan@utsouthwestern.edu.
Yuxiang LiuDepartment of Neuroscience, UT Southwestern Medical Center, Dallas, TX 75390, USA; Peter O'Donnell Jr. Brain Institute, UT Southwestern Medical Center, Dallas, TX 75390, USA.
Genevieve KonopkaDepartment of Neuroscience, UT Southwestern Medical Center, Dallas, TX 75390, USA; Peter O'Donnell Jr. Brain Institute, UT Southwestern Medical Center, Dallas, TX 75390, USA. Electronic address: genevieve.konopka@utsouthwestern.edu.

Funding

From ion channels to graph theory in sensorimotor learningUF1NS115821 · NINDS · UNIVERSITY OF CHICAGO · PI KONOPKA, GENEVIEVE, MACLEAN, JASON NEIL · 2020 to 2020
$3.9M
Human Specific Brain DNA Methylation and Neuropsychiatric DiseasesR01MH103517 · NIMH · GEORGIA INSTITUTE OF TECHNOLOGY · PI JORDAN, IRVING KING, PREUSS, TODD M · 2015 to 2019
$3.5M
Foxp-regulated signaling pathways in brain development - DiversityR01MH126481 · NIMH · UT SOUTHWESTERN MEDICAL CENTER · PI KONOPKA, GENEVIEVE · 2021 to 2025
$3.4M
Comparative Epigenomics of Primate BrainsR01HG011641 · NHGRI · UNIVERSITY OF CALIFORNIA SANTA BARBARA · PI KONOPKA, GENEVIEVE, SHERWOOD, CHESTER · 2021 to 2024
$2.4M
American Heart Association-American Stroke Association 915654NHGRI NIH HHS R01 HG011641NIMH NIH HHS R01 MH103517NIMH NIH HHS R01 MH126481NINDS NIH HHS UF1 NS115821
6 · The paper itself

Abstract

Ambient RNA contamination in single-cell and single-nuclei RNA sequencing (snRNA-seq) is a significant problem, but its consequences are poorly understood. Here, we show that ambient RNAs in brain snRNA-seq datasets have a nuclear or non-nuclear origin with distinct gene set signatures. Both ambient RNA signatures are predominantly neuronal, and we find that some previously annotated neuronal cell types are distinguished by ambient RNA contamination. We detect pervasive neuronal ambient RNA contamination in all glial cell types unless glia and neurons are physically separated prior to sequencing. We demonstrate that this contamination can be removed in silico and show that previous single-nuclei RNA-seq-based annotations of immature oligodendrocytes are glial nuclei contaminated with ambient RNAs. After ambient RNA removal, we detect rare, committed oligodendrocyte progenitor cells not annotated in most previous adult human brain datasets. Together, these results provide an in-depth analysis of ambient RNA contamination in brain single-nuclei datasets.

Indexed as

Cell NucleusRNAAdultHumansNeuronsRNA, Small NuclearSequence Analysis, RNASingle-Cell AnalysisSolitary NucleusRNARNA, Small Nuclearambient RNAneurogenomicsoligodendrocytessingle-cell RNA-seq

Identifiers

PMID36240767
PMCPMC9789184

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Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.