2026-10-14T02:59:28Z https://api.figshare.com/v2/oai

oai:figshare.com:article/34025341 2026-09-29T17:15:38Z category_4 category_8 category_19 category_21 category_272 category_873 category_39 category_734 category_69 category_106 portal_63 item_type_6 month_year_09_2026

High-Throughput Identification of PPARγ-Active Chemicals in Riverine Drinking Water Sources: Discover a Novel DEHP Biodegradation Product Qiang Li (8118) Kaisheng Hong (19826413) Chenke Xu (19547075) Linwan Li (15345909) Geng Yue (23158796) Cheng Xu (352754) Min Yang (146229) Jianying Hu (1430806) Biochemistry Microbiology Pharmacology Biotechnology Environmental Sciences not elsewhere classified Chemical Sciences not elsewhere classified Ecology Biological Sciences not elsewhere classified Inorganic Chemistry Science Policy novel biodegradation product including 18 antagonists 61 chemicals ranging study comprehensively revealed ppar active compounds potent pparγ antagonist 61 pparγ ligands priority antagonistic chemicals priority agonistic chemicals 50 </ sub 5 μm ). source water samples 2 -( 2 antagonistic chemicals water samples active chemicals pparγ agonistic source waters comprehensively identify active contaminants prioritize pparγ yellow rivers widespread occurrence transformation products throughput identification reported previously mass spectrometry environmental contaminants dodecylbenzenesulfonic acid 5748 ng While exposure to PPAR active compounds can lead to various adverse health effects, studies on the environmental contaminants and their transformation products with PPAR activity remain limited. This study employed PPARγ protein affinity selection-mass spectrometry (AS-MS) to comprehensively identify and prioritize PPARγ-active contaminants in the Yangtze and Yellow Rivers, key drinking water sources in China. From wastewater treatment plant effluents, river, and source water samples, 61 PPARγ ligands were identified, including 18 antagonists not reported previously. Notably, a novel biodegradation product of di-2-ethylhexyl phthalate (DEHP), phthalic acid 1-(2-ethylhexyl) 2-(2-ethyl-5-carboxypentyl) ester (5CX-DEHP), was discovered and characterized as a potent PPARγ antagonist (IC₅₀ = 8.5 μM). Semi-quantification revealed total concentrations of 61 chemicals ranging from 965.2 to 5748 ng/L in source waters, with priority agonistic chemicals such as 4-dodecylbenzenesulfonic acid and priority antagonistic chemicals such as 2-amino-6-methylmercaptopurine and 5CX-DEHP posing high ranking. This study comprehensively revealed the widespread occurrence of PPARγ agonistic and antagonistic chemicals in the water samples and identified a previously overlooked transformation product of DEHP as a relatively strong PPARγ antagonist. 2026-09-29T00:00:00Z Text Journal contribution 10.1021/acs.est.6c03326.s001 https://figshare.com/articles/journal_contribution/High-Throughput_Identification_of_PPAR_-Active_Chemicals_in_Riverine_Drinking_Water_Sources_Discover_a_Novel_DEHP_Biodegradation_Product/34025341 CC BY-NC 4.0