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Forkhead box A1 regulates prostate ductal morphogenesis and promotes epithelial cell maturation
Nan Gao1, Kenichiro Ishii, Janni Mirosevich
1Department of Cell and Developmental Biology, Vanderbilt University, Nashville, TN 37232, USA.
Development (Cambridge, England)
|July 1, 2005
Summary
Forkhead transcription factor Foxa1 is crucial for mouse prostate development. Its absence leads to abnormal ductal patterns and a lack of mature cells, highlighting Foxa1
Area of Science:
- Developmental Biology
- Molecular Biology
- Urology
Background:
- Forkhead transcription factor Foxa1 interacts with androgen signaling and controls prostate differentiated response.
- Foxa1 expression in the embryonic urogenital sinus epithelium (UGE) is widespread.
Purpose of the Study:
- To investigate the role of Foxa1 in mouse prostate morphogenesis and cell differentiation.
- To characterize the phenotypic and molecular changes in Foxa1-deficient prostates.
Main Methods:
- Analysis of Foxa1 expression patterns in embryonic mouse prostates.
- Histological and cellular characterization of Foxa1-deficient mouse prostates.
- Molecular analysis of gene expression, including Shh, Foxa2, Notch1, Nkx3.1, and androgen-regulated markers.
Main Results:
- Foxa1 expression marks the entire embryonic UGE, unlike Shh and Foxa2.
- Foxa1-deficient prostates exhibit altered ductal patterns with primitive epithelial cords and stromal expansion.
- Mutant prostates lack differentiated luminal epithelial cells, showing basal-like cells instead.
- Molecular aberrations include Shh activation, elevated Foxa2 and Notch1, downregulated Nkx3.1, and absence of prostate-specific markers.
Conclusions:
- Foxa1 plays a pivotal role in controlling prostate morphogenesis.
- Foxa1 is essential for prostate epithelial cell differentiation.
- Perturbed epithelial-stromal interactions are induced by Foxa1 deficiency.