Effects of in Utero PFOS Exposure on Transcriptome, Lipidome, and Function of Mouse Testis

Keng Po Lai, Jetty Chung Yung Lee, Hin Ting Wan, Jing Woei Li, Aman Yi Man Wong, Ting Fung Chan, Camille Oger, Jean Marie Galano, Thierry Durand, Kin Sum Leung, Cherry C. Leung, Rong Li, Chris K C WONG*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

22 Citations (Scopus)

Abstract

Transcriptomic and LC-MS/MS-based targeted lipidomic analyses were conducted to identify the effects of in utero PFOS exposure on neonatal testes and its relation to testicular dysfunction in adult offspring. Pregnant mice were orally administered 0.3 and 3 μg PFOS/g body weight until term. Neonatal testes (P1) were collected for the detection of PFOS, and were subjected to omics study. Integrated pathway analyses using DAVID, KEGG, and IPA underlined the effects of PFOS exposure on lipid metabolism, oxidative stress and cell junction signaling in testes. LC-MS/MS analysis showed that the levels of adrenic acid and docosahexaenoic acid (DHA) in testes were significantly reduced in the PFOS treatment groups. A significant linear decreasing trend in eicosapentaenoic acid and DHA with PFOS concentrations was observed. Moreover, LOX-mediated 5-hydroxyeicosatetraenoic acids (HETE) and 15-HETE from arachidonic acid in the testes were significantly elevated and a linear increasing trend of 15-HETE concentrations was detected with doses of PFOS. The perturbations of lipid mediators suggested that PFOS has potential negative impacts on testicular functions. Postnatal analysis of male offspring at P63 showed significant reductions in serum testosterone and epididymal sperm count. This study sheds light into the as yet unrevealed action of PFOS on lipid mediators in affecting testicular functions.

Original languageEnglish
Pages (from-to)8782-8794
Number of pages13
JournalEnvironmental Science & Technology
Volume51
Issue number15
DOIs
Publication statusPublished - 1 Aug 2017

Scopus Subject Areas

  • Chemistry(all)
  • Environmental Chemistry

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