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A mutation in the nucleoporin-107 gene causes XX gonadal dysgenesis
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A mutation in the nucleoporin-107 gene causes XX gonadal dysgenesis
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Journal Article
A mutation in the nucleoporin-107 gene causes XX gonadal dysgenesis
2015
Overview
Ovarian development and maintenance are poorly understood; however, diseases that affect these processes can offer insights into the underlying mechanisms. XX female gonadal dysgenesis (XX-GD) is a rare, genetically heterogeneous disorder that is characterized by underdeveloped, dysfunctional ovaries, with subsequent lack of spontaneous pubertal development, primary amenorrhea, uterine hypoplasia, and hypergonadotropic hypogonadism. Here, we report an extended consanguineous family of Palestinian origin, in which 4 females exhibited XX-GD. Using homozygosity mapping and whole-exome sequencing, we identified a recessive missense mutation in nucleoporin-107 (NUP107, c.1339G>A, p.D447N). This mutation segregated with the XX-GD phenotype and was not present in available databases or in 150 healthy ethnically matched controls. NUP107 is a component of the nuclear pore complex, and the NUP107-associated protein SEH1 is required for oogenesis in Drosophila. In Drosophila, Nup107 knockdown in somatic gonadal cells resulted in female sterility, whereas males were fully fertile. Transgenic rescue of Drosophila females bearing the Nup107D364N mutation, which corresponds to the human NUP107 (p.D447N), resulted in almost complete sterility, with a marked reduction in progeny, morphologically aberrant eggshells, and disintegrating egg chambers, indicating defective oogenesis. These results indicate a pivotal role for NUP107 in ovarian development and suggest that nucleoporin defects may play a role in milder and more common conditions such as premature ovarian failure.
Publisher
American Society for Clinical Investigation
Subject
/ Adult
/ Animals
/ Animals, Genetically Modified
/ Drosophila melanogaster - genetics
/ Drosophila Proteins - deficiency
/ Drosophila Proteins - genetics
/ Drosophila Proteins - physiology
/ Female
/ Females
/ Genes
/ Gonadal Dysgenesis, 46,XX - genetics
/ Humans
/ Infertility, Female - genetics
/ Insects
/ Male
/ Mice
/ Mutation
/ Nuclear Pore Complex Proteins - deficiency
/ Nuclear Pore Complex Proteins - genetics
/ Nuclear Pore Complex Proteins - physiology
/ Pedigree
/ Studies
/ Values
