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Cell Genomics

Two proteins reshape DNA marks similarly in mouse cells

Mouse embryonic stem cells reprogrammed with either of two gene-control proteins developed similar cancer-like marking patterns, despite activating different sets of genes.

Paper by Chuck Haggerty, Sebastian D. Mackowiak, Meiying Cui, +4 more authorsAlexander Meissner
Graphical abstract from Cell Genomics
Open the figure at full size
Graphical abstract. Haggerty et al., CC BY

Our read

Mechanisms
Studied:
Experiments in mouse embryonic stem cells, against CDX2-reprogrammed mouse embryonic stem cells
What changed:
GATA6-reprogrammed mouse cells developed DNA methylation patterns similar to those in CDX2-reprogrammed cells
The catch:
The experiment tracked cell-identity changes rather than DNA methylation changes during aging
In the record:
One of 7 papers on CDX2 on record: none yet with results in people, 2 in animals.

Editor of record: Boris Djordjevic · AgingResearch.News

Paper
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Mouse embryonic stem cells developed similar cancer-like patterns of DNA methylation, chemical marks attached to DNA, when researchers reprogrammed them with either of two gene-control proteins in a laboratory experiment. The proteins, GATA6 and CDX2, pushed the cells toward identities found in tissues outside the embryo. They acted at different DNA sites and activated different sets of genes.

Both proteins nevertheless triggered rapid, coordinated changes across the genome. DNA methylation fell overall, while new methylation appeared in regions regulated by Polycomb proteins, which help control gene activity. Marks on DNA-packaging proteins also shifted. Experiments modeling senescence, a state in which cells stop dividing, and analyses of human aging and cancer groups revealed related, progressively more extensive disruptions of boundaries between differently marked regions.

Why it matters

The authors present this cell system as a way to investigate coordinated changes in DNA and its packaging, including patterns related to those seen in aging and cancer.

Caveats

The mouse-cell experiment changed cell identity rather than following cells as they aged. It did not show whether the same proteins produce the related patterns seen in human aging.

Where the evidence stands

DNA methylation

Cells, mice and humans: replicated by independent labs. Worms or flies: a single group.

C, W, M, H: cells, worms or flies, mice, humans. Dark: independent labs found the same change there. Light: one lab or one study. Outline: nothing yet.

Labs are independent when their papers share no last author and no institution.

Against: findings that point the other way from most findings on the same outcome.

Company ties: findings with an author at a company, or from a paper whose competing-interests statement declares ties to one.

Includes the processes named after it and trials of drugs aimed at it.

  • 205 independent labs in 39 countries
  • 19 findings against
  • Funders: National Institutes of Health and others
  • 44 of 410 findings with company ties

GATA6

Cells, mice and humans: a single group. Worms or flies: nothing yet.

C, W, M, H: cells, worms or flies, mice, humans. Dark: independent labs found the same change there. Light: one lab or one study. Outline: nothing yet.

Labs are independent when their papers share no last author and no institution.

Includes the processes named after it and trials of drugs aimed at it.

  • 5 independent labs in 3 countries
  • Funders: National Institute of Arthritis and Musculoskeletal and Skin Diseases and others

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The paper

Distinct extraembryonic transcription factors converge on a shared DNA methylation-Polycomb state

Chuck Haggerty, Sebastian D. Mackowiak, Meiying Cui, +4 more authorsAlexander Meissner

Cell Genomics, Nov 2026, CC BY

doi.org/10.1016/j.xgen.2026.101421

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