Evidence map›Paper›PMID 32587328›Full record

ArticleCommunications biology2020

Single-cell sequencing of genomic DNA resolves sub-clonal heterogeneity in a melanoma cell line.

Enrique I Velazquez-Villarreal, Shamoni Maheshwari, Jon Sorenson, Ian T Fiddes, Vijay Kumar, Yifeng Yin, Michelle G Webb, Claudia Catalanotti, Mira Grigorova, Paul A Edwards and 2 more

Abstract read
In one paragraph

Article in Communications biology, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 39 papers.

0numbers the graph read from it
0cells of the map it votes in
39citing 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

39 citing papers in PubMed.

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  10. Seq2Karyotype (S2K): A Method forbioRxiv : the preprint server for biology · 2025
    Article
  11. Article
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  14. Pathway-specific genomic alterations in pancreatic cancer across diverse cohorts.medRxiv : the preprint server for health sciences · 2025
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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

12 authors.

Enrique I Velazquez-Villarreal *Department of Translational Genomics, Keck School of Medicine of University of Southern California, Los Angeles, CA, USA. eivelazq@usc.edu.
Shamoni Maheshwari *10X Genomics, Pleasanton, CA, USA.
Jon Sorenson10X Genomics, Pleasanton, CA, USA.
Ian T Fiddes10X Genomics, Pleasanton, CA, USA.
Vijay Kumar10X Genomics, Pleasanton, CA, USA.
Yifeng Yin10X Genomics, Pleasanton, CA, USA.
Michelle G WebbDepartment of Translational Genomics, Keck School of Medicine of University of Southern California, Los Angeles, CA, USA.
Claudia Catalanotti10X Genomics, Pleasanton, CA, USA.
Mira GrigorovaHutchison-MRC Research Centre, University of Cambridge, Cambridge, UK.
Paul A EdwardsHutchison-MRC Research Centre, University of Cambridge, Cambridge, UK.ORCID http://orcid.org/0000-0002-4789-3374
John D CarptenDepartment of Translational Genomics, Keck School of Medicine of University of Southern California, Los Angeles, CA, USA.ORCID http://orcid.org/0000-0002-6862-2821
David W CraigDepartment of Translational Genomics, Keck School of Medicine of University of Southern California, Los Angeles, CA, USA. davidwcr@usc.edu.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

We performed shallow single-cell sequencing of genomic DNA across 1475 cells from a cell-line, COLO829, to resolve overall complexity and clonality. This melanoma tumor-line has been previously characterized by multiple technologies and is a benchmark for evaluating somatic alterations. In some of these studies, COLO829 has shown conflicting and/or indeterminate copy number and, thus, single-cell sequencing provides a tool for gaining insight. Following shallow single-cell sequencing, we first identified at least four major sub-clones by discriminant analysis of principal components of single-cell copy number data. Based on clustering, break-point and loss of heterozygosity analysis of aggregated data from sub-clones, we identified distinct hallmark events that were validated within bulk sequencing and spectral karyotyping. In summary, COLO829 exhibits a classical Dutrillaux's monosomic/trisomic pattern of karyotype evolution with endoreduplication, where consistent sub-clones emerge from the loss/gain of abnormal chromosomes. Overall, our results demonstrate how shallow copy number profiling can uncover hidden biological insights.

Indexed as

Cell Line, TumorDNA Copy Number VariationsHumansKaryotypingLoss of HeterozygosityMelanomaSequence Analysis, DNASingle-Cell Analysis

Identifiers

PMID32587328
PMCPMC7316972

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Registered trials

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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.