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NAP Family CG5017 Chaperone Pleiotropically Regulates Human AHR Target Genes Expression in Drosophila Testis

Koltzov Institute of Developmental Biology, Russian Academy of Sciences, Vavilova str. 26, Moscow 119991, Russia
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Int. J. Mol. Sci. 2019, 20(1), 118; https://doi.org/10.3390/ijms20010118
Received: 31 October 2018 / Revised: 11 December 2018 / Accepted: 13 December 2018 / Published: 29 December 2018
(This article belongs to the Special Issue Aryl Hydrocarbon Receptor in Biology and Toxicology)
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Abstract

To study the regulatory mechanism of the Aryl hydrocarbon receptor (AHR), target genes of transcription are necessary for understanding the normal developmental and pathological processes. Here, we examined the effects of human AHR ligands on male fecundity. To induce ectopic human AhR gene expression, we used Drosophila melanogaster transformed with human AhR under the control of a yeast UAS promoter element capable of activation in the two-component UAS-GAL4 system. We found that exogenous AHR ligands decrease the number of Drosophila gonadal Tj-positive cells. We also found both an increase and decrease of AHR target gene expression, including in genes that control homeostasis and testis development. This suggests that gonadal AHR activation may affect the expression of gene networks that control sperm production and could be critical for fertility not just in Drosophila but also in humans. Finally, we found that the activation of the expression for some AHR target genes depends on the expression of testis-specific chaperone CG5017 in gonadal cells. Since CG5017 belongs to the nucleosome assembly protein (NAP) family and may participate in epigenetic regulation, we propose that this nucleotropic chaperone is essential to provide the human AHR with access to only the defined set of its target genes during spermatogenesis. View Full-Text
Keywords: nucleosome assembly protein; Aryl hydrocarbon receptor; xenobiotic; spermatogenesis; CG5017; Drosophila nucleosome assembly protein; Aryl hydrocarbon receptor; xenobiotic; spermatogenesis; CG5017; Drosophila
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Akishina, A.A.; Vorontsova, J.E.; Cherezov, R.O.; Slezinger, M.S.; Simonova, O.B.; Kuzin, B.A. NAP Family CG5017 Chaperone Pleiotropically Regulates Human AHR Target Genes Expression in Drosophila Testis. Int. J. Mol. Sci. 2019, 20, 118.

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