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Series GSE252776 Query DataSets for GSE252776
Status Public on May 03, 2024
Title Persistent organic pollutants dysregulate energy homeostasis in human ovaries in vitro
Organism Homo sapiens
Experiment type Expression profiling by high throughput sequencing
Summary Exposure to persistent organic pollutants (POPs), such as dichlorodiphenyltrichloroethane (DDT) and polychlorinated biphenyls (PCBs), has historically been linked to population collapses in wildlife. Despite international regulations, these legacy chemicals are still currently detected in women of reproductive age, and their levels correlate with reduced ovarian reserve, longer time-to-pregnancy, and higher risk of infertility. However, the specific modes of action underlying these associations remain unclear. Here, we examined the effects of five commonly occurring POPs − hexachlorobenzene (HCB), p,p'-dichlorodiphenyldichloroethylene (DDE), 2,3,3′,4,4′,5-hexachlorobiphenyl (PCB156), 2,2′,3,4,4′,5,5′-heptachlorobiphenyl (PCB180), perfluorooctane sulfonate (PFOS) − and their mixture on human ovaries in vitro. We exposed human ovarian cancer cell lines COV434, KGN, and PA1 as well as primary ovarian cells for 24 h, and ovarian tissue containing unilaminar follicles for 6 days. RNA-sequencing of samples exposed to concentrations covering epidemiologically relevant levels revealed significant gene expression changes related to central energy metabolism in the exposed cells, indicating glycolysis, oxidative phosphorylation, fatty acid metabolism, and reactive oxygen species as potential shared targets of POP exposures in ovarian cells. Alpha-enolase (ENO1), lactate dehydrogenase A (LDHA), cytochrome C oxidase subunit 4I1 (COX4I1), ATP synthase F1 subunit alpha (ATP5A), and glutathione peroxidase 4 (GPX4) were validated as targets through qPCR in additional cell culture experiments in KGN. In ovarian tissue cultures, we observed significant effects of exposure on follicle growth and atresia as well as protein expression. All POP exposures, except PCB180, decreased unilaminar follicle proportion and increased follicle atresia. Immunostaining confirmed altered expression of LDHA, ATP5A, and GPX4 in the exposed tissues. Moreover, POP exposures modified ATP production in KGN and tissue culture. In conclusion, our results demonstrate the disruption of cellular energy metabolism as a novel mode of action underlying POP-mediated interference of follicle growth in human ovaries.
 
Overall design 242 samples from 3 passages of 4 cell lines (COV434, KGN, PA1, primary ovarian cells), 20 groups in total (MEDIA, DMSO, HCB 1X, HCB 10X, HCB 100X, DDE 1X, DDE 10X, DDE 100X, PCB156 1X, PCB156 10X, PCB156 100X, PCB180 1X, PCB180, 10X, PCB180 100X, PFOS 1X, PFOS 10X, PFOS 100X, MIX 1X, MIX 10X, MIX 100X)
Web link https://doi.org/10.1016/j.envint.2024.108710
 
Contributor(s) Li T, Björvang RD, Hao J, Di Nisio V, Damdimopoulos A, Lindskog C, Papaikonomou K, Damdimopoulou P
Citation(s) 38701644
Submission date Jan 08, 2024
Last update date Aug 02, 2024
Contact name Tianyi Li
E-mail(s) tianyi_li1@sina.com
Phone +46-739764359
Organization name Karolinska Institute
Department Clinical Science, Intervention and Technology
Lab Damdimopoulou lab
Street address Novum plan 5 hiss F, Hälsovägen 7-9
City Huddinge
ZIP/Postal code 14186
Country Sweden
 
Platforms (1)
GPL21697 NextSeq 550 (Homo sapiens)
Samples (242)
GSM8006849 COV434, HCB_100X, P27B
GSM8006850 COV434, HCB_100X, P28A
GSM8006851 COV434, HCB_100X, P33A
Relations
BioProject PRJNA1062431

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Supplementary file Size Download File type/resource
GSE252776_RawCounts.txt.gz 2.9 Mb (ftp)(http) TXT
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Raw data are available in SRA
Processed data are available on Series record

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