Retinoic Acid Antagonizes Testis Development in Mice
| Autor: | Kim Miles, Chun-Wei Feng, Vincent R. Harley, Andrew H. Sinclair, Jessica Ineson, Peter Koopman, Cassy M. Spiller, Josephine Bowles |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
Male
0301 basic medicine endocrine system Gonad Somatic cell Retinoic acid Tretinoin Endogeny Ovary SOX9 Biology Organ culture General Biochemistry Genetics and Molecular Biology Mice 03 medical and health sciences chemistry.chemical_compound Testis medicine Animals Cells Cultured DAX-1 Orphan Nuclear Receptor SOX9 Transcription Factor Retinoic Acid 4-Hydroxylase Sex Determination Processes Cell biology Mice Inbred C57BL 030104 developmental biology medicine.anatomical_structure Nuclear receptor chemistry Female |
| Zdroj: | Cell Reports. 24:1330-1341 |
| ISSN: | 2211-1247 |
| DOI: | 10.1016/j.celrep.2018.06.111 |
| Popis: | Mammalian sex determination depends on a complex interplay of signals that promote the bipotential fetal gonad to develop as either a testis or an ovary, but the details are incompletely understood. Here, we investigated whether removal of the signaling molecule retinoic acid (RA) by the degradative enzyme CYP26B1 is necessary for proper development of somatic cells of the testes. Gonadal organ culture experiments suggested that RA promotes expression of some ovarian markers and suppresses expression of some testicular markers, acting downstream of Sox9. XY Cyp26b1-null embryos, in which endogenous RA is not degraded, develop mild ovotestes, but more important, steroidogenesis is impaired and the reproductive tract feminized. Experiments involving purified gonadal cells showed that these effects are independent of germ cells and suggest the direct involvement of the orphan nuclear receptor DAX1. Our results reveal that active removal of endogenous RA is required for normal testis development in the mouse. |
| Databáze: | OpenAIRE |
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