Evidence map›Paper›PMID 35254875›Full record

ArticleProceedings of the National Academy of Sciences of the United States of America2022

Viable offspring derived from single unfertilized mammalian oocytes.

Yanchang Wei, Cai-Rong Yang, Zhen-Ao Zhao

Open access · greenAbstract read
In one paragraph

Article in Proceedings of the National Academy of Sciences of the United States of America, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 18 papers.

0numbers the graph read from it
0cells of the map it votes in
18citing papers in PubMed
9.4field-weighted citation impact, top 2% of its field
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

18 citing papers in PubMed, 51 citations in OpenAlex.

  1. Article
  2. The multi-omics regulatory landscape of human early embryogenesis.Cellular and molecular life sciences : CMLS · 2026
    Review
  3. Article
  4. Article
  5. Epigenetic editing: from concept to clinic.Nature reviews. Drug discovery · 2026
    Review
  6. Fertile androgenetic mice generated by targeted epigenetic editing of imprinting control regions.Proceedings of the National Academy of Sciences of the United States of America · 2025
    Article
  7. Article
  8. Review
  9. Article
  10. Review
  11. Review
  12. Article
  13. Article
  14. Folding makes an imprint.Genes & development · 2023
    Article
  15. Article
  16. Article
  17. Article
  18. Identification of the porcine IG-DMR and abnormal imprinting ofFrontiers in cell and developmental biology · 2022
    Article
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 at 2 institutions in 2 countries.

Yanchang WeiCenter for Reproductive Medicine, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200135, China.ORCID 0000-0003-4810-9761
Cai-Rong YangCenter for Reproductive Medicine, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200135, China.
Zhen-Ao ZhaoCenter for Reproductive Medicine, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200135, China.ORCID 0000-0002-9868-2534
Shanghai Jiao Tong University · CNUniversity of California, San Francisco · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

In mammals, a new life starts with the fusion of an oocyte and asperm cell. Parthenogenesis, a way of generating offspring solelyfrom female gametes, is limited because of problems arising fromgenomic imprinting. Here, we report live mammalian offspringderived from single unfertilized oocytes, which was achieved by tar-geted DNA methylation rewriting of seven imprinting control regions.Oocyte coinjection of catalytically inactive Cas9 (dCas9)-Dnmt3a ordCpf1-Tet1 messenger RNA (mRNA) with single-guide RNAs (sgRNAs)targeting specific regions induced de novo methylation or demethyla-tion, respectively, of the targeted region. Following parthenogeneticactivation, these edited regions showed maintenance of methylationas naturally established regions during early preimplantation develop-ment. The transfer of modified parthenogenetic embryos into fostermothers resulted in significantly extended development andfinally inthe generation of viable full-term offspring. These data demonstratethat parthenogenesis can be achieved by targeted epigenetic rewrit-ing of multiple critical imprinting control regions.

Indexed as

DNA MethylationGenomic ImprintingAnimalsMammalsOocytesParthenogenesisearly embryogenomic imprintingmammaloffspringoocyte

Identifiers

PMID35254875
PMCPMC8944925
OpenAlexW4221065481

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC-ND
Read underepoch 390

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.