4.6 Review

Sperm-induced Ca2+ release during egg activation in mammals

Journal

BIOCHEMICAL AND BIOPHYSICAL RESEARCH COMMUNICATIONS
Volume 450, Issue 3, Pages 1204-1211

Publisher

ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.bbrc.2014.04.078

Keywords

Phospholipase C (PLC); PLCzeta; Egg activation; Calcium oscillations; Sperm; Fertilization

Funding

  1. Wellcome Trust
  2. MRC
  3. BBSRC
  4. Cardiff University

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This review discusses the role that the sperm-specific phospholipase C zeta (HA) is proposed to play during the fertilization of mammalian eggs. At fertilization, the sperm initiates development by causing a series of oscillations in cytosolic concentrations of calcium [Ca-2] within the egg. PLC zeta mimics the sperm at fertilization, causing the same pattern of Ca2+ release as seen at fertilization. Introducing PLC zeta into mouse eggs also mimics a number of other features of the way in which the fertilizing sperm triggers Ca2+ oscillations. We discuss the localization of PLC zeta within the egg and present a hypothesis about the localization of PLC zeta within the sperm before the initiation of fertilization. (C) 2014 Elsevier Inc. All rights reserved.

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