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Department of Molecular and Cellular Biology, Baylor College of Medicine, Houston, Texas 77030
The interactions of peptide and steroid hormone signaling cascades in the ovary are critical for follicular growth, ovulation, and luteinization. Although the pituitary gonadotropins follicle-stimulating hormone (FSH) and luteinizing hormone (LH) play key regulatory roles, their actions are also dependent on other peptide signaling pathways, including those stimulated by insulin-like growth factor-1 (IGF-1), transforming growth factor-beta (TGF-ß) family members (e.g., inhibin, activin, growth differentiation factor-9, bone morphogenic proteins), fibroblast growth factor, and Wnts (via Frizzled receptors). Each of these factors is expressed and acts in a cell-specific manner at defined stages of follicular growth. IGF-1, estrogen, and FSH comprise one major regulatory system. The Wnt/Frizzled pathways define other aspects relating to ovarian embryogenesis and possibly ovulation and luteinization. Likewise, the steroid receptors as well as orphan nuclear receptors and their ligands impact ovarian cell function. The importance of these multiple signaling cascades has been documented by targeted deletion of specific genes. For example, mice null for the LH-induced genes progesterone receptor (PR) and cyclo-oxygenase-2 (COX-2) fail to ovulate. Whereas PR appears to regulate the induction of novel proteases, COX-2 appears to regulate cumulus expansion. This review summarizes some new aspects of peptide and steroid hormone signaling in the rodent ovary.
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A. Sanfins, C. E. Plancha, E. W. Overstrom, and D. F. Albertini Meiotic spindle morphogenesis in in vivo and in vitro matured mouse oocytes: insights into the relationship between nuclear and cytoplasmic quality Hum. Reprod., December 1, 2004; 19(12): 2889 - 2899. [Abstract] [Full Text] [PDF] |
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M. Jo, M. C. Gieske, C. E. Payne, S. E. Wheeler-Price, J. B. Gieske, I. V. Ignatius, T. E. Curry Jr., and C. Ko Development and Application of a Rat Ovarian Gene Expression Database Endocrinology, November 1, 2004; 145(11): 5384 - 5396. [Abstract] [Full Text] [PDF] |
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D. L. Russell, K. M. H. Doyle, S. A. Ochsner, J. D. Sandy, and J. S. Richards Processing and Localization of ADAMTS-1 and Proteolytic Cleavage of Versican during Cumulus Matrix Expansion and Ovulation J. Biol. Chem., October 24, 2003; 278(43): 42330 - 42339. [Abstract] [Full Text] [PDF] |
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K. H. Burns, G. E. Owens, S. C. Ogbonna, J. H. Nilson, and M. M. Matzuk Expression Profiling Analyses of Gonadotropin Responses and Tumor Development in the Absence of Inhibins Endocrinology, October 1, 2003; 144(10): 4492 - 4507. [Abstract] [Full Text] [PDF] |
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M. Hsieh, S. M. Mulders, R. R. Friis, A. Dharmarajan, and J. S. Richards Expression and Localization of Secreted Frizzled-Related Protein-4 in the Rodent Ovary: Evidence for Selective Up-Regulation in Luteinized Granulosa Cells Endocrinology, October 1, 2003; 144(10): 4597 - 4606. [Abstract] [Full Text] [PDF] |
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L. T. Budnik, B. Brunswig-Spickenheier, and A. K. Mukhopadhyay Lysophosphatidic Acid Signals through Mitogen-Activated Protein Kinase-Extracellular Signal Regulated Kinase in Ovarian Theca Cells Expressing the LPA1/edg2-Receptor: Involvement of a Nonclassical Pathway? Mol. Endocrinol., August 1, 2003; 17(8): 1593 - 1606. [Abstract] [Full Text] [PDF] |
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A. E. Falender, R. Lanz, D. Malenfant, L. Belanger, and J. S. Richards Differential Expression of Steroidogenic Factor-1 and FTF/LRH-1 in the Rodent Ovary Endocrinology, August 1, 2003; 144(8): 3598 - 3610. [Abstract] [Full Text] [PDF] |
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B. M. Gummow, J. N. Winnay, and G. D. Hammer Convergence of Wnt Signaling and Steroidogenic Factor-1 (SF-1) on Transcription of the Rat Inhibin {alpha} Gene J. Biol. Chem., July 11, 2003; 278(29): 26572 - 26579. [Abstract] [Full Text] [PDF] |
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J.-Y. Park, F. Richard, S.-Y. Chun, J.-H. Park, E. Law, K. Horner, S-L C. Jin, and M. Conti Phosphodiesterase Regulation Is Critical for the Differentiation and Pattern of Gene Expression in Granulosa Cells of the Ovarian Follicle Mol. Endocrinol., June 1, 2003; 17(6): 1117 - 1130. [Abstract] [Full Text] [PDF] |
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S. Jabara, L. K. Christenson, C. Y. Wang, J. M. McAllister, N. B. Javitt, A. Dunaif, and J. F. Strauss III Stromal Cells of the Human Postmenopausal Ovary Display a Distinctive Biochemical and Molecular Phenotype J. Clin. Endocrinol. Metab., January 1, 2003; 88(1): 484 - 492. [Abstract] [Full Text] [PDF] |
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L. L. Espey and J. S. Richards Temporal and Spatial Patterns of Ovarian Gene Transcription Following an Ovulatory Dose of Gonadotropin in the Rat Biol Reprod, December 1, 2002; 67(6): 1662 - 1670. [Abstract] [Full Text] [PDF] |
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