Evidence map›Paper›PMID 10673504›Full record

ArticleGenes & development2000

Absence of Wee1 ensures the meiotic cell cycle in Xenopus oocytes.

N Nakajo, S Yoshitome, J Iwashita, M Iida, K Uto, S Ueno, K Okamoto, N Sagata

Open access · diamondAbstract read
In one paragraph

Article in Genes & development, 2000. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 57 papers.

0numbers the graph read from it
0cells of the map it votes in
57citing 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

57 citing papers in PubMed, 129 citations in OpenAlex.

  1. Article
  2. Review
  3. Article
  4. TheBiomolecules · 2025
    Review
  5. Article
  6. Egg Overactivation-An Overlooked Phenomenon of Gamete Physiology.International journal of molecular sciences · 2025
    Review
  7. Article
  8. Article
  9. Article
  10. Article
  11. Meiotic Cell Cycle Progression in Mouse Oocytes: Role of Cyclins.International journal of molecular sciences · 2023
    Review
  12. Article
  13. Article
  14. TheBiomolecules · 2021
    Article
  15. Review
  16. Dissection of the Ovulatory Process UsingFrontiers in cell and developmental biology · 2020
    Review
  17. Article
  18. Review
  19. Article
  20. Meiosis: an overview of key differences from mitosis.Cold Spring Harbor perspectives in biology · 2015
    Review
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

8 authors at 1 institution in 1 country.

N NakajoDepartment of Biology, Graduate School of Science, Kyushu University, Fukuoka 812-8581, Japan.
S Yoshitome
J Iwashita
M Iida
K Uto
S Ueno
K Okamoto
N Sagata
Kyushu University · JP

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Meiotic cells undergo two successive divisions without an intervening S phase. However, the mechanism of S-phase omission between the two meiotic divisions is largely unknown. Here we show that Wee1, a universal mitotic inhibitor, is absent in immature (but not mature) Xenopus oocytes, being down-regulated specifically during oogenesis; this down-regulation is most likely due to a translational repression. Even the modest ectopic expression of Wee1 in immature (meiosis I) oocytes can induce interphase nucleus reformation and DNA replication just after meiosis I. Thus, the presence of Wee1 during meiosis I converts the meiotic cell cycle into a mitotic-like cell cycle having S phase. In contrast, Myt1, a Wee1-related kinase, is present and directly involved in G(2) arrest of immature oocytes, but its ectopic expression has little effect on the meiotic cell cycle. These results strongly indicate that the absence of Wee1 in meiosis I ensures the meiotic cell cycle in Xenopus oocytes. Based on these results and the data published previously in other organisms, we suggest that absence of Wee1 may be a well-conserved mechanism for omitting interphase or S phase between the two meiotic divisions.

Indexed as

Cell Cycle ProteinsNuclear ProteinsXenopus ProteinsAnimalsBlotting, WesternDNA ReplicationDown-RegulationGene Expression Regulation, DevelopmentalMeiosisOocytesOogenesisProphaseProtein Serine-Threonine KinasesProtein-Tyrosine KinasesReverse Transcriptase Polymerase Chain ReactionS PhaseCell Cycle ProteinsMYT1 kinase, XenopusNuclear ProteinsProtein Serine-Threonine KinasesProtein-Tyrosine KinasesWEE1 protein, XenopusXenopus Proteins

Identifiers

PMID10673504
PMCPMC316360
OpenAlexW2171940542

What OpenQuestion holds

Textmetadata
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.