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Updated: Apr 30, 2026
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Medium-throughput Screening Assays for Assessment of Effects on Ca2+-Signaling and Acrosome Reaction in Human Sperm
Published on: March 1, 2019
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Sperm-induced Ca2+ release during egg activation in mammals
Junaid Kashir1, Michail Nomikos1, F Anthony Lai1
1Institute of Molecular and Experimental Medicine, Cardiff University School of Medicine, Cardiff CF14 4XN, UK.
Biochemical and Biophysical Research Communications
|April 29, 2014
Summary
Sperm-specific phospholipase C zeta (PLCζ) triggers calcium oscillations essential for mammalian egg fertilization. This review explores PLCζ
Area of Science:
- Reproductive Biology
- Cellular Biology
- Biochemistry
Background:
- Fertilization requires sperm to initiate embryonic development.
- Sperm trigger a series of calcium oscillations within the egg.
- The precise molecular mechanism of sperm-induced calcium oscillations is under investigation.
Purpose of the Study:
- To review the proposed role of sperm-specific phospholipase C zeta (PLCζ) in mammalian fertilization.
- To discuss the function of PLCζ in initiating egg activation.
- To explore the localization of PLCζ within the sperm and egg.
Main Methods:
- Literature review of existing research on PLCζ and fertilization.
- Analysis of experimental data on PLCζ function in vitro.
- Discussion of proposed mechanisms for PLCζ localization and activity.
Main Results:
- PLCζ is proposed to be the primary factor responsible for sperm-induced calcium oscillations.
- Introduction of PLCζ into eggs mimics the natural fertilization process, inducing calcium release.
- PLCζ exhibits specific localization patterns within the egg, with a hypothesized localization in the sperm.
Conclusions:
- PLCζ plays a critical role in mammalian egg activation by mimicking sperm-induced calcium oscillations.
- Understanding PLCζ function and localization is key to comprehending fertilization.
- Further research is needed to elucidate the precise localization and activation mechanisms of PLCζ in sperm.
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