Requirement of Lim1 for female reproductive tract development
Author:
Kobayashi Akio12, Shawlot William3, Kania Artur4, Behringer Richard R.12
Affiliation:
1. Program in Developmental Biology, Baylor College of Medicine, Houston, TX 77030, USA 2. Department of Molecular Genetics, University of Texas M. D. Anderson Cancer Center, Houston, TX 77030, USA 3. Department of Genetics, Cell Biology, and Development, University of Minnesota, Minneapolis, MN 55455, USA 4. Howard Hughes Medical Institute, Department of Biochemistry and Molecular Biophysics, Center for Neurobiology and Behavior, Columbia University, New York, NY 10032, USA
Abstract
Lim1 encodes a LIM-class homeodomain transcription factor that is essential for head and kidney development. In the developing urogenital system, Lim1 expression has been documented in the Wolffian(mesonephric) duct, the mesonephros, metanephros and fetal gonads. Using, a Lim1 lacZ knock-in allele in mice, we identified a previously unreported urogenital tissue for Lim1 expression, the epithelium of the developing Müllerian duct that gives rise to the oviduct, uterus and upper region of the vagina of the female reproductive tract. Lim1expression in the Müllerian duct is dynamic, corresponding to its formation and differentiation in females and regression in males. Although female Lim1-null neonates had ovaries they lacked a uterus and oviducts. A novel female mouse chimera assay was developed and revealed that Lim1 is required cell autonomously for Müllerian duct epithelium formation. These studies demonstrate an essential role for Lim1 in female reproductive tract development.
Publisher
The Company of Biologists
Subject
Developmental Biology,Molecular Biology
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