Evidence map›Paper›PMID 34818044›Full record

ArticleScience advances2021

Evolutionary epigenomic analyses in mammalian early embryos reveal species-specific innovations and conserved principles of imprinting.

Xukun Lu, Yu Zhang, Lijuan Wang, Leyun Wang, Huili Wang, Qianhua Xu, Yunlong Xiang, Chaolei Chen, Feng Kong, Weikun Xia and 8 more

Abstract read
In one paragraph

Article in Science advances, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 50 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
50citing papers in PubMed, 1 pooled it
–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

50 citing papers in PubMed, 1 synthesis or guideline pooled it.

  1. Pooled it
  2. Article
  3. Review
  4. Article
  5. Review
  6. The multi-omics regulatory landscape of human early embryogenesis.Cellular and molecular life sciences : CMLS · 2026
    Review
  7. Article
  8. Article
  9. Article
  10. Review
  11. Histone Modifications in Mammalian Early Embryos.Advances in experimental medicine and biology · 2026
    Review
  12. Article
  13. Article
  14. Article
  15. Article
  16. Review
  17. Article
  18. Article
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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

18 authors.

Xukun LuTsinghua-Peking Center for Life Sciences, Beijing 100084, China.ORCID 0000-0003-1122-2840
Yu ZhangTsinghua-Peking Center for Life Sciences, Beijing 100084, China.ORCID 0000-0002-3315-9427
Lijuan WangCenter for Stem Cell Biology and Regenerative Medicine, MOE Key Laboratory of Bioinformatics, School of Life Sciences, Tsinghua University, Beijing 100084, China.ORCID 0000-0003-0194-1796
Leyun WangState Key Laboratory of Stem Cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing 100101, China.ORCID 0000-0003-4448-0141
Huili WangInstitute of Animal Science, Jiangsu Academy of Agricultural Sciences, Nanjing 210014, China.ORCID 0000-0002-9026-4389
Qianhua XuTsinghua-Peking Center for Life Sciences, Beijing 100084, China.
Yunlong XiangTsinghua-Peking Center for Life Sciences, Beijing 100084, China.
Chaolei ChenCollege of Animal Science and Technology, Beijing University of Agriculture, Beijing 102206, China.
Feng KongCenter for Stem Cell Biology and Regenerative Medicine, MOE Key Laboratory of Bioinformatics, School of Life Sciences, Tsinghua University, Beijing 100084, China.
Weikun XiaTsinghua-Peking Center for Life Sciences, Beijing 100084, China.ORCID 0000-0001-5800-6040
Zili LinTsinghua-Peking Center for Life Sciences, Beijing 100084, China.
Sinan MaState Key Laboratory of Stem Cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing 100101, China.
Ling LiuCenter for Stem Cell Biology and Regenerative Medicine, MOE Key Laboratory of Bioinformatics, School of Life Sciences, Tsinghua University, Beijing 100084, China.
Xiangguo WangCollege of Animal Science and Technology, Beijing University of Agriculture, Beijing 102206, China.ORCID 0000-0002-5001-7930
Hemin NiCollege of Animal Science and Technology, Beijing University of Agriculture, Beijing 102206, China.ORCID 0000-0001-8222-251X
Wei LiState Key Laboratory of Stem Cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing 100101, China.ORCID 0000-0001-7864-404X
Yong GuoCollege of Animal Science and Technology, Beijing University of Agriculture, Beijing 102206, China.ORCID 0000-0002-1838-1636
Wei XieTsinghua-Peking Center for Life Sciences, Beijing 100084, China.ORCID 0000-0003-2126-3849

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

While mouse remains the most popular model, the conservation of parental-to-embryonic epigenetic transition across mammals is poorly defined. Through analysis of oocytes and early embryos in human, bovine, porcine, rat, and mouse, we revealed remarkable species-specific innovations as no single animal model fully recapitulates the human epigenetic transition. In rodent oocytes, transcription-dependent DNA methylation allows methylation of maternal imprints but not intergenic paternal imprints. Unexpectedly, prevalent DNA hypermethylation, paralleled by H3K36me2/3, also occurs in nontranscribed regions in porcine and bovine oocytes, except for megabase-long “CpG continents (CGCs)” where imprinting control regions preferentially reside. Broad H3K4me3 and H3K27me3 domains exist in nonhuman oocytes, yet only rodent H3K27me3 survives beyond genome activation. Coincidently, regulatory elements preferentially evade H3K27me3 in rodent oocytes, and failure to do so causes aberrant embryonic gene repression. Hence, the diverse mammalian innovations of parental-to-embryonic transition center on a delicate “to-methylate-or-not” balance in establishing imprints while protecting other regulatory regions.

Identifiers

PMID34818044
PMCPMC8612685

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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.