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Porcine Dax-1 gene: isolation and expression during gonadal development
P Parma1, E Pailhoux, C Puissant
1Laboratoire de Biologie Cellulaire et Moléculaire, INRA, Jouy en Josas, France.
Molecular and Cellular Endocrinology
|February 7, 1998
Summary
Dosage sensitive sex reversal (DSS) is linked to duplicated X chromosome regions. The Dax-1 gene, identified in this region, is crucial for reproductive system development and function in pigs.
Area of Science:
- Genetics
- Developmental Biology
- Endocrinology
Background:
- A duplicated region on the X chromosome (Xp21) in XY females was linked to dosage sensitive sex reversal (DSS).
- The DAX-1 (DSS-AHC critical region on the X) gene, a nuclear hormone receptor family member, was isolated from this region.
Purpose of the Study:
- To isolate porcine Dax-1 and analyze its expression patterns during fetal development and in adult tissues.
- To investigate the role of Dax-1 in the development and function of the reproductive system.
Main Methods:
- Isolation of the porcine Dax-1 gene.
- Analysis of Dax-1 gene expression using various tissue samples from different developmental stages.
Main Results:
- Dax-1 is expressed in porcine adrenals, pituitary gland, and gonads throughout development.
- Gonadal Dax-1 expression begins between 21-23 days post coitum in both XX and XY embryos and persists into adulthood.
Conclusions:
- Porcine Dax-1 expression in key endocrine and reproductive organs suggests its involvement in reproductive system development and function.
- The study provides insights into the molecular mechanisms underlying sex determination and reproductive health.