期刊
SCIENCE
卷 303, 期 5658, 页码 682-684出版社
AMER ASSOC ADVANCEMENT SCIENCE
DOI: 10.1126/science.1092463
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资金
- NICHD NIH HHS [HD20788, HD31398] Funding Source: Medline
Before ovulation in mammals, a cascade of events resembling an inflammatory and/or tissue remodeling process is triggered by luteinizing hormone (LH) in the ovarian follicle. Many LH effects, however, are thought to be indirect because of the restricted expression of its receptor. Here, we demonstrate that LH stimulation induces the transient and sequential expression of the epidermal growth factor (EGF) family members amphiregulin, epiregulin, and beta-cellulin. Incubation of follicles with these growth factors recapitulates the morphological and biochemical events triggered by LH, including cumulus expansion and oocyte maturation. Thus, these EGF-related growth factors are paracrine mediators that propagate the LH signal throughout the follicle.
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