Evidence map›Paper›PMID 18028898›Full record

ArticleDevelopmental biology2007

Proteolytic processing of phospholipase Czeta and [Ca2+]i oscillations during mammalian fertilization.

Manabu Kurokawa, Sook Young Yoon, Dominique Alfandari, Kiyoko Fukami, Ken-ichi Sato, Rafael A Fissore

Abstract read
In one paragraph

Article in Developmental biology, 2007. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 25 papers.

0numbers the graph read from it
0cells of the map it votes in
25citing 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

25 citing papers in PubMed.

  1. Review
  2. Article
  3. Review
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  5. Article
  6. Article
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  9. Article
  10. Article
  11. Review
  12. Sperm contributions to oocyte activation: more that meets the eye.Journal of assisted reproduction and genetics · 2016
    Review
  13. Article
  14. Article
  15. Article
  16. Article
  17. Article
  18. Article
  19. Review
  20. 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

6 authors.

Manabu KurokawaPaige Laboratory, Department of Veterinary and Animal Sciences, University of Massachusetts, Amherst, MA 01003, USA.
Sook Young Yoon
Dominique Alfandari
Kiyoko Fukami
Ken-ichi Sato
Rafael A Fissore

Funding

Mechanism of Xenopus Cranial Neural Crest Cell MigrationR01DE016289 · NIDCR · UNIVERSITY OF MASSACHUSETTS AMHERST · PI ALFANDARI, DOMINIQUE R · 2006 to 2022
$5.4M
LP3R-1 Regulation and Egg ActivationR01HD051872 · NICHD · UNIVERSITY OF MASSACHUSETTS AMHERST · PI FISSORE, RAFAEL ANTONIO · 2007 to 2011
$1.3M
Release and molecular composition of mammalian SFsR03HD042498 · NICHD · UNIVERSITY OF MASSACHUSETTS AMHERST · PI FISSORE, RAFAEL ANTONIO · 2003 to 2004
$152k
NICHD NIH HHS R01 HD051872NICHD NIH HHS R03 HD042498NIDCR NIH HHS DE 016289NIDCR NIH HHS R01 DE016289
6 · The paper itself

Abstract

Phospholipase Czeta (PLCzeta) is a sperm-specific PLC capable of causing repetitive intracellular Ca2+ ([Ca2+]i) release ([Ca2+]i oscillations) in mammalian eggs. Accumulating evidence suggests that PLCzeta is the sperm factor responsible for inducing egg activation. Nevertheless, some sperm fractions devoid of 72-kDa PLCzeta showed [Ca2+]i oscillation-inducing and PLCzeta-like PLC activity (Kurokawa et al., (2005) Dev. Biol. 285, 376-392). Here, we report that PLCzeta remains functional after proteolytic cleavage at the X-Y linker region. We found that N-terminal (33 and 37 kDa) and C-terminal fragments (27 kDa), presumably the result of PLCzeta cleavage at the X-Y linker region, were present in fresh sperm as well as in sperm extracts and remained associated as functional complexes. Protease V8 cleaved 72-kDa PLCzeta into 33/37 and 27 kDa fragments, while PLC activity and [Ca2+]i oscillation-inducing activity persisted until degradation of the fragments. Immunodepletion or affinity depletion of these fragments abolished PLC activity and [Ca2+]i oscillation-inducing activity from sperm extracts. Lastly, co-expression of cRNAs encoding residues 1-361 and 362-647 of mouse PLCzeta, mimicking cleavage at the X-Y linker region, induced [Ca2+]i oscillations and embryo development in mouse eggs. Our results support the hypothesis that PLCzeta is the sole mammalian sperm factor and that its linker region may have important regulatory functions during mammalian fertilization.

Indexed as

Calcium SignalingProtein Processing, Post-TranslationalAnimalsCalciumCattleChlorocebus aethiopsCOS CellsEmbryonic DevelopmentFemaleFertilizationHydrogen-Ion ConcentrationMaleMiceOvumPeptide FragmentsPeptidesCalciumglutamyl endopeptidasePeptide FragmentsPeptidesPhosphoinositide Phospholipase CPlcz1 protein, mouseRNA, ComplementarySerine Endopeptidases

Identifiers

PMID18028898
PMCPMC2254324

What OpenQuestion holds

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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.