MAIA, Fc receptor–like 3, supersedes JUNO as IZUMO1 receptor during human fertilization

Jana Vondrakova, Michaela Frolikova, Lukas Ded, Jiri Cerny, Pavla Postlerova, Veronika Palenikova, Ondrej Simonik, Zuzana Nahacka, Krystof Basus, Eliska Valaskova, Radek Machan, Allan Pacey, Zuzana Holubcova, Pavel Koubek, Zuzana Ezrova, Soojin Park, Ruiwu Liu, Raghavendran Partha, Nathan Clark, Jiri NeuzilMasahito Ikawa, Kent Erickson, Kit S Lam, Harry Moore, Katerina Komrskova

Research output: Contribution to journalArticlepeer-review

Abstract

Gamete fusion is a critical event of mammalian fertilization. A random one-bead one-compound combinatorial peptide library represented synthetic human egg mimics and identified a previously unidentified ligand as Fc receptor-like 3, named MAIA after the mythological goddess intertwined with JUNO. This immunoglobulin super family receptor was expressed on human oolemma and played a major role during sperm-egg adhesion and fusion. MAIA forms a highly stable interaction with the known IZUMO1/JUNO sperm-egg complex, permitting specific gamete fusion. The complexity of the MAIA isotype may offer a cryptic sexual selection mechanism to avoid genetic incompatibility and achieve favorable fitness outcomes.

Original languageEnglish
Article numbereabn0047
JournalScience Advances
Volume8
Issue number36
DOIs
Publication statusPublished - 9 Sept 2022

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