Semin Reprod Med 2009; 27(1): 014-023
DOI: 10.1055/s-0028-1108006
© Thieme Medical Publishers

Roles for Transforming Growth Factor Beta Superfamily Proteins in Early Folliculogenesis

Daniel J. Trombly1 , 3 , Teresa K. Woodruff1 , 2 , 3 , Kelly E. Mayo1 , 3
  • 1Department of Biochemistry, Molecular Biology & Cell Biology and Center for Reproductive Science, Northwestern University, Chicago, Illinois
  • 2Department of Obstetrics & Gynecology, Northwestern University, Chicago, Illinois
  • 3Northwestern University, Chicago, Illinois
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Publication History

Publication Date:
05 February 2009 (online)

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ABSTRACT

Primordial follicle formation and the subsequent transition of follicles to the primary and secondary stages encompass the early events during folliculogenesis in mammals. These processes establish the ovarian follicle pool and prime follicles for entry into subsequent growth phases during the reproductive cycle. Perturbations during follicle formation can affect the size of the primordial follicle pool significantly, and alterations in follicle transition can cause follicles to arrest at immature stages or result in premature depletion of the follicle reserve. Determining the molecular events that regulate primordial follicle formation and early follicle growth may lead to the development of new fertility treatments. Over the last decade, many of the growth factors and signaling proteins that mediate the early stages of folliculogenesis have been identified using mouse genetic models, in vivo injection studies, and ex vivo organ culture approaches. These studies reveal important roles for the transforming growth factor β (TGF-β) superfamily of proteins in the ovary. This article reviews these roles for TGF-β family proteins and focuses in particular on work from our laboratories on the functions of activin in early folliculogenesis.

REFERENCES

Kelly MayoPh.D. 

Department of Biochemistry, Molecular Biology & Cell Biology, Northwestern University

Hogan 4-112, 2205 Tech Drive, Evanston, IL 60208

Email: k-mayo@northwestern.edu