TY - INPR A1 - Völker, Johannes A1 - Ashcroft, Felicity A1 - Vedøy, Åsa A1 - Zimmermann, Lisa A1 - Wagner, Martin T1 - Adipogenic activity of chemicals used in plastic consumer products T2 - bioRxiv N2 - Bisphenols and phthalates, chemicals frequently used in plastic products, promote obesity in cell and animal models. However, these well-known metabolism disrupting chemicals (MDCs) represent only a minute fraction of all compounds found in plastics. To gain a comprehensive understanding of plastics as a source of exposure to MDCs, we characterized all chemicals present in 34 everyday products using nontarget high-resolution mass spectrometry and analyzed their joint adipogenic activities by high-content imaging. We detected 55,300 chemical features and tentatively identified 629 unique compounds, including 11 known MDCs. Importantly, chemicals that induced proliferation, growth, and triglyceride accumulation in 3T3-L1 adipocytes were found in one third of the products. Since the majority did not target peroxisome proliferator-activated receptor γ, the effects are likely to be caused by unknown MDCs. Our study demonstrates that daily-use plastics contain potent mixtures of MDCs and can, therefore, be a relevant yet underestimated environmental factor contributing to obesity. Teaser Plastics contain a potent mixture of chemicals promoting adipogenesis, a key process in developing obesity. Y1 - 2021 UR - http://publikationen.ub.uni-frankfurt.de/frontdoor/index/index/docId/72931 UR - https://nbn-resolving.org/urn:nbn:de:hebis:30:3-729316 IS - 2021.07.29.454199 ER -