Τίτλος:
Effect of PRL on in vitro follicle growth, in vitro oocyte maturation, fertilization and early embryonic development in mice
Περίληψη:
Prolactin (PRL), along with other hormones, plays a role in oocyte maturation, fertilization, and early embryonic development in mammals. In order to investigate the role of PRL on in vitro oocyte maturation from early follicular growth stages, as well as on fertilization and early embryonic development, we cultured preantral mouse follicles with and without PRL, followed by fertilization of the in vitro matured oocytes. Prolactin significantly improved the rate of oocyte maturation, fertilization, and early embryo development. Four isoforms of PRL-Receptor (R) have been found in whole ovaries of mice: one long (PRL-RL) and three short (-RS1, -RS 2, and -RS3). We examined expression of the four PRL-R isoforms in preantral follicles, in cumulus-oocyte complexes (COCs) and in germinal vesicle GV stage oocytes by RT-PCR. Prolactin-RL, -RS2 and -RS3 mRNA, but not -RS1, were expressed in preantral follicles, COCs, and GV stage oocytes. Our results indicate the prolactin pathway is functional in early preantral follicles, in COCs and in GV stage oocytes, and promotes oocyte maturation, meiosis, fertilization, and early embryonic development. © Copyright 2009, Mary Ann Liebert, Inc.
Συγγραφείς:
Kiapekou, E.
Loutradis, D.
Mastorakos, G.
Bletsa, R.
Beretsos, P.
Zapanti, E.
Drakakis, P.
Antsaklis, A.
Kiessling, A.A.
Λέξεις-κλειδιά:
messenger RNA; prolactin; prolactin receptor; isoprotein; prolactin; prolactin receptor, animal cell; animal experiment; animal tissue; article; cell culture; cell growth; controlled study; cumulus cell; drug effect; embryo development; female; fertilization; germinal vesicle; in vitro study; meiosis; mouse; newborn; nonhuman; nucleotide sequence; oocyte maturation; ovary; ovary follicle cell; priority journal; reverse transcription polymerase chain reaction; animal; animal embryo; fertilization; genetics; growth, development and aging; metabolism; oocyte; ovary follicle; physiology; pregnancy, Mammalia; Mus, Animals; Embryo, Mammalian; Female; Fertilization; Mice; Oocytes; Ovarian Follicle; Pregnancy; Prolactin; Protein Isoforms; Receptors, Prolactin
