The abstract is read at the publisher; the summary is JClub's.
Double knockout of sperm PLCζ1 and PLCδ4 in mice abolishes fertilization-induced Ca2+ oscillations and causes male sterility, showing both PLCs are required for egg activation.
- Why it matters: Fertilization Ca2+ oscillations are essential for mammalian egg activation, but it is unclear whether PLCζ1 alone explains Ca2+ release across mammals or whether other sperm PLCs compensate.
- What they did: Using CRISPR/Cas9, the authors created Plcδ4 knockout mice and then a double knockout line lacking both sperm-enriched PLCs, measuring sperm-triggered Ca2+ oscillations and fertilization outcomes.
- The result: Plcδ4-null sperm showed attenuated, delayed Ca2+ oscillations and reduced fertilization rates, while double knockout sperm failed to induce oscillations and residual Ca2+ rise was insufficient to activate eggs.
The findingWhy it mattersWhat they didThe result
AI summary of the abstract · may contain errors · not medical advice · read the paper.