Monika R Paranjpe, Patrick G S Grady, Hongshi Yu, Andrew J Pask, Rachel J O'Neill, Geoff Shaw, Marilyn B Renfree
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引用次数: 0
Abstract
Introduction: The MAPK genes are critical for gonadal differentiation in eutherian mammals, but their role in marsupial mammals is unknown. Characterisation and phylogenetic analyses of the tammar wallaby MAPK genes show these genes are highly conserved with their orthologues in mammalian and non-mammalian species.
Methods: We cultured sexually indifferent tammar gonads in the presence of p38α and -β MAPK inhibitor, SB202190.
Results: SB202190 downregulated SOX9 and AMH levels in XY-treated gonads when compared to controls, similar to the effects of oestrogen on the MAPK pathway in males. In contrast, XX gonads treated with the SB202190 inhibitor showed no change in mRNA expression between the control and treated gonads for any of the markers tested.
Conclusions: This study confirms that components of the MAPK pathway drive testis differentiation via the key downstream genes SOX9 and AMH in marsupials as is observed in eutherian mammals.
期刊介绍：
Recent discoveries in experimental and clinical research have led to impressive advances in our knowledge of the genetic and environmental mechanisms governing sex determination and differentiation, their evolution as well as the mutations or endocrine and metabolic abnormalities that interfere with normal gonadal development. ‘Sexual Development’ provides a unique forum for this rapidly expanding field. Its broad scope covers all aspects of genetics, molecular biology, embryology, endocrinology, evolution and pathology of sex determination and differentiation in humans and animals. It publishes high-quality original research manuscripts, review articles, short reports, case reports and commentaries. An internationally renowned and multidisciplinary editorial team of three chief editors, ten prominent scientists serving as section editors, and a distinguished panel of editorial board members ensures fast and author-friendly editorial processing and peer reviewing.
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