Evidence map›Paper›PMID 33871360›Full record

ArticleeLife2021

Evolutionarily conserved sperm factors, DCST1 and DCST2, are required for gamete fusion.

Naokazu Inoue, Yoshihisa Hagihara, Ikuo Wada

Open access · goldAbstract read
In one paragraph

Article in eLife, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 53 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
53citing papers in PubMed, 1 pooled it
11.1field-weighted citation impact, top 1% 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

53 citing papers in PubMed, 1 synthesis or guideline pooled it, 81 citations in OpenAlex.

  1. Pooled it
  2. Review
  3. Article
  4. Review
  5. Article
  6. Review
  7. Article
  8. Characterization ofbioRxiv : the preprint server for biology · 2026
    Article
  9. Article
  10. The SPARK complex forms the molecular basis of vertebrate fertilization.bioRxiv : the preprint server for biology · 2026
    Article
  11. Article
  12. Article
  13. Article
  14. Article
  15. Molecular mechanisms leading to gamete fusion.Fukushima journal of medical science · 2025
    Review
  16. Article
  17. Allosteric inhibition of the IZUMO1-JUNO fertilization complex by the naturally occurring antisperm antibody OBF13.Proceedings of the National Academy of Sciences of the United States of America · 2025
    Article
  18. Review
  19. Article
  20. Article
4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

3 authors at 2 institutions in 1 country.

Naokazu InoueDepartment of Cell Science, Institute of Biomedical Sciences, School of Medicine, Fukushima Medical University, Fukushima, Japan.ORCID 0000-0002-6187-8293
Yoshihisa HagiharaBiomedical Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), Ikeda, Japan.ORCID 0000-0002-5980-1764
Ikuo WadaDepartment of Cell Science, Institute of Biomedical Sciences, School of Medicine, Fukushima Medical University, Fukushima, Japan.ORCID 0000-0001-5668-6994
Fukushima Medical University · JPNational Institute of Advanced Industrial Science and Technology · JP

Funding

Gunma University 19014Japan Society for the Promotion of Science JP17K07311Japan Society for the Promotion of Science JP18H02453
6 · The paper itself

Abstract

To trigger gamete fusion, spermatozoa need to activate the molecular machinery in which sperm IZUMO1 and oocyte JUNO (IZUMO1R) interaction plays a critical role in mammals. Although a set of factors involved in this process has recently been identified, no common factor that can function in both vertebrates and invertebrates has yet been reported. Here, we first demonstrate that the evolutionarily conserved factors dendrocyte expressed seven transmembrane protein domain-containing 1 (DCST1) and dendrocyte expressed seven transmembrane protein domain-containing 2 (DCST2) are essential for sperm-egg fusion in mice, as proven by gene disruption and complementation experiments. We also found that the protein stability of another gamete fusion-related sperm factor, SPACA6, is differently regulated by DCST1/2 and IZUMO1. Thus, we suggest that spermatozoa ensure proper fertilization in mammals by integrating various molecular pathways, including an evolutionarily conserved system that has developed as a result of nearly one billion years of evolution.

Indexed as

Evolution, MolecularAdaptor Proteins, Signal TransducingAmino Acid SequenceAnimalsBase SequenceFemaleFertilizationMaleMembrane ProteinsMiceOocytesPhylogenySequence AlignmentSpermatozoaUbiquitin-Protein LigasesAdaptor Proteins, Signal TransducingMembrane ProteinsUbiquitin-Protein Ligasesdevelopmental biologyfertilizationgamete fusiongamete interactionmouseoocytespermatozoon

Identifiers

PMID33871360
PMCPMC8055269
OpenAlexW3152541033

What OpenQuestion holds

Textmetadata
LicenceCC BY
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.