Involvement of Metalloproteases in the Fertilization of the Ascidian Halocynthia roretzi
2024
Metalloproteases in Ascidian Fertilization
publication
Evidence: moderate
Author Information
Author(s): Sawada Hitoshi, Hattori Ikuya, Hashii Noritaka, Saito Takako
Primary Institution: Graduate School of Science, Nagoya University
Hypothesis
Are metalloproteases involved in the fertilization of the ascidian Halocynthia roretzi?
Conclusion
Metalloproteases are likely responsible for sperm penetration of the vitelline coat during fertilization in Halocynthia roretzi.
Supporting Evidence
- Three metalloprotease inhibitors strongly inhibited fertilization at specific concentrations.
- GM6001 had no effect on VC-deprived eggs, indicating its role in sperm penetration.
- Four candidate metalloprotease genes were identified in the H. roretzi genome.
Takeaway
This study found that certain proteins help sperm get through the egg's protective layer during fertilization in a type of sea creature called an ascidian.
Methodology
The study examined the effects of metalloprotease inhibitors on fertilization rates in Halocynthia roretzi.
Digital Object Identifier (DOI)
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