Journal
MOLECULAR AND CELLULAR ENDOCRINOLOGY
Volume 317, Issue 1-2, Pages 106-111Publisher
ELSEVIER IRELAND LTD
DOI: 10.1016/j.mce.2009.11.013
Keywords
WNT4; Apoptosis; Oocyte; Granulosa cell; Human ovary
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Funding
- Academy of Finland
- Sigrid Juselius Foundation
- Oulu University Hospital
- The Europian Union [LSHG-CT-2004-005085]
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WNT4 plays an important role in female sexual development and ovarian function. WNT4-deficiency leads disturbed development of the internal genitalia in mouse and human, and to a dramatic reduction of mouse oocytes. However, the expression and role of WNT4 in human ovaries is yet unknown. The expression of WNT4 mRNA and protein was studied in human adult and fetal ovaries (gestational ages 12-41 weeks), and the role of WNT4 in oocyte apoptosis was investigated in WNT4-deficient mice. WNT4 mRNA and protein were present in human ovaries throughout fetal development and in different follicular stages in adult ovaries. Compared with wild-type mice, WNT4-deficient mice had a markedly enhanced rate of oocyte apoptosis, with the highest values at gestational ages of 14.5 and 16.5 days Post-coitum. The current results Support a view that WNT4 may have a role in oocyte selection and follicle formation and maturation in human ovaries. (C) 2009 Elsevier Ireland Ltd. All rights reserved.
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