✦ LIBER ✦

Follicle cell regulation of mammalian oocyte growth

✍ Scribed by Buccione, Roberto ;Cecconi, Sandra ;Tatone, Carla ;Mangia, Franco ;Colonna, Rosella

Publisher: John Wiley and Sons
Year: 1987
Tongue: English
Weight: 388 KB
Volume: 242
Category: Article
ISSN: 0022-104X
DOI: 10.1002/jez.1402420314

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✦ Synopsis

To investigate mechanisms of follicle cell control on mammalian oocyte growth, preantral mouse oocytes free from surrounding follicle cells were individually cocultured with monolayers of different somatic cells competent to form gap junctions, and the rate of in vitro oocyte growth was directly correlated with the level of metabolic coupling on the same cells. The results indicate that 1) at a similar extent of metabolic coupling, mouse oocytes grew on follicle cells but not on 3T3 and Sertoli cell monolayers, and 2) the growth rate of oocytes cultured on follicle cells was dependent on the extent of metabolic coupling. It was concluded that gap-junction-mediated nutrition of ovarian mouse oocytes exerted by somatic cells is necessary but not sufficient to maintain oocyte growth. A specific regulatory role of follicle cells on mammalian oocyte growth is proposed.

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