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Sci Rep ; 9(1): 9484, 2019 07 01.
Article in English | MEDLINE | ID: mdl-31263184

ABSTRACT

Fertilization and early embryo development are regulated by a unique maternal-gamete/embryo cross-talk within the oviduct. Recent studies have shown that extracellular vesicles (EVs) within the oviduct play important roles in mediating this developmental process. Here, we examined the influence of oviductal EVs on sperm function in the domestic cat. We demonstrated that (1) EVs are enriched in proteins related to energy metabolism, membrane modification, and reproductive function; (2) EVs bound and fused with the membranes of the acrosome and mid piece; and (3) incubating sperm with EVs improved motility, fertilizing capacity of cat spermatozoa and prevented acrosomal exocytosis in vitro. These findings indicated that oviductal EVs mediate sperm function and fertilization in the cat and provides new insights to improve sperm cryopreservation and in vitro fertilization in the domestic and wild felids and human.


Subject(s)
Extracellular Vesicles/metabolism , Fallopian Tubes/metabolism , Fertilization/physiology , Sperm Head/metabolism , Sperm Midpiece/metabolism , Sperm Motility/physiology , Animals , Cats , Fallopian Tubes/cytology , Female , Humans , Male
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