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Updated: Aug 8, 2026

Medium-throughput Screening Assays for Assessment of Effects on Ca2+-Signaling and Acrosome Reaction in Human Sperm
Published on: March 1, 2019
[The signalling cascade of fertilization]
A A Tokmakov1, K I Sato, Y Fukami
1A. A. Uktomsky Physiological Research Institute, St. Petersburg State University. tokmak@gsc.riken.go.ip
Abstract:
The early event of fertilization-induced egg activation is a mobilization of intracellular Ca2+ that originates from the sperm entry point and spreads through the entire egg cytoplasm. Recently, this process has been established to require the sequential activation of Src family kinases, phospholipase C gamma, and inositoltrisphosphate receptor of endoplasmic reticulum. This review summarizes recent findings concerning the signalling pathway of fertilization from sperm-egg interaction to the Ca2+ release with emphasis on the role of tyrosine kinases in the egg activation.
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