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- W2900944384 abstract "Abstract Di(2-ethylhexyl)phthalate (DEHP) interferes with sex hormones signaling pathways (SHP). C57BL/6J mice prenatally exposed to DEHP develop a testicular dysgenesis syndrome (TDS) at adulthood, but similarly-exposed FVB/N mice are not affected. Here we aim to understand the reasons behind this drastic difference that should depend on the genome of the strain. In both backgrounds, pregnant female mice received per os either DEHP or corn oil vehicle and the male filiations were examined. Computer-assisted sperm analysis showed a DEHP-induced decreased sperm count and velocities in C57BL/6J. Sperm RNA sequencing experiments resulted in the identification of the 62 most differentially expressed RNAs. These RNAs, mainly regulated by hormones, produced strain-specific transcriptional responses to prenatal exposure to DEHP; a pool of RNAs was increased in FVB, another pool of RNAs was decreased in C57BL/6J. In FVB/N, analysis of non-synonymous SNP impacting SHP identified rs387782768 and rs387782768 respectively associated with absence of the Forkhead Box A3 ( Foxa3 ) RNA and increased expression of estrogen receptor 1 variant 4 (NM_001302533) RNA. Analysis of the role of SNPs modifying SHP binding sites in function of strain-specific responses to DEHP revealed a DEHP-resistance allele in FVB/N containing an additional FOXA1-3 binding site at rs30973633 and four DEHP-induced beta-defensins ( Defb42 , Defb30 , Defb47 and Defb48 ). A DEHP-susceptibility allele in C57BL/6J contained five SNPs (rs28279710, rs32977910, rs46648903, rs46677594 and rs48287999) affecting SHP and six genes ( Svs2 , Svs3b , Svs4 , Svs3a , Svs6 and Svs5) epigenetically silenced by DEHP. Finally, targeted experiments confirmed increased methylation in the Svs3ab promoter with decreased SEMG2 persisting across generations, providing a molecular explanation for the transgenerational sperm velocity decrease found in C57BL/6J after DEHP exposure. We conclude that the existence of SNP-dependent mechanisms in inbred mice may confer resistance to transgenerational endocrine disruption." @default.
- W2900944384 created "2018-11-29" @default.
- W2900944384 creator A5011658344 @default.
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- W2900944384 creator A5049934475 @default.
- W2900944384 creator A5057345515 @default.
- W2900944384 creator A5076860166 @default.
- W2900944384 date "2018-11-19" @default.
- W2900944384 modified "2023-09-27" @default.
- W2900944384 title "Genetic resistance to DEHP-induced transgenerational endocrine disruption" @default.
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