Ferroptosis is the key cellular process mediating Bisphenol A responses in Chlamydomonas and a promising target for enhancing microalgae-based bioremediation

María Carbó, Palak Chaturvedi, Ana Álvarez, Daniela Pineda-Cevallos, Arindam Ghatak, Pablo Rodríguez González, María Jesús Cañal, Wolfram Weckwerth, Luis Valledor

Microplastics are one of the major pollutants in aquatic environments. Among their components, Bisphenol A (BPA) is one of the most abundant and dangerous, leading to endocrine disorders deriving even in different types of cancer in mammals. However, despite this evidence, the xenobiotic effects of BPA over plantae and microalgae still need to be better understood at the molecular level. To fill this gap, we characterized the physiological and proteomic response of Chlamydomonas reinhardtii during long-term BPA exposure by analyzing physiological and biochemical parameters combined with proteomics. BPA imbalanced iron and redox homeostasis, disrupting cell function and triggering ferroptosis. Intriguingly, this microalgae defense against this pollutant is recovering at both molecular and physiological levels while starch accumulation at 72 h of BPA exposure. In this work, we addressed the molecular mechanisms involved in BPA exposure, demonstrating for the first time the induction of ferroptosis in a eukaryotic alga and how ROS detoxification mechanisms and other specific proteomic rearrangements reverted this situation. These results are of great significance not only for understanding the BPA toxicology or exploring the molecular mechanisms of ferroptosis in microalgae but also for defining novel target genes for microplastic bioremediation efficient strain development.

Functional and Evolutionary Ecology, Research Platform Vienna Metabolomics Center
External organisation(s)
Universidad de Oviedo
Journal of Hazardous Materials
Publication date
Peer reviewed
Austrian Fields of Science 2012
208001 Bioremediation, 106002 Biochemistry, 104023 Environmental chemistry, 106031 Plant physiology
ASJC Scopus subject areas
Pollution, Waste Management and Disposal, Health, Toxicology and Mutagenesis, Environmental Engineering, Environmental Chemistry
Sustainable Development Goals
SDG 3 - Good Health and Well-being
Portal url