Ferroptosis is an oxidative and iron-dependent form of regulated cell death (RCD) recently described in eukaryotic organisms like animals, plants, and parasites. Here, we report that a similar process takes place in the photosynthetic prokaryote Synechocystis sp. PCC 6803 in response to heat stress. After a heat shock, Synechocystis sp. PCC 6803 cells undergo a cell death pathway that can be suppressed by the canonical ferroptosis inhibitors, CPX, vitamin E, Fer-1, liproxstatin-1, glutathione (GSH), or ascorbic acid (AsA). Moreover, as described for eukaryotic ferroptosis, this pathway is characterized by an early depletion of the antioxidants GSH and AsA, and by lipid peroxidation. These results indicate that all of the hallmarks described for eukaryotic ferroptosis are conserved in photosynthetic prokaryotes and suggest that ferroptosis might be an ancient cell death program.
C-ferroptosis is an iron-dependent form of regulated cell death in cyanobacteria
A. Aguilera’s present address is Centre for Ecology and Evolution in Microbial Model Systems, Linnaeus University, Kalmar, Sweden.
F. Berdun’s present address is Instituto de Investigaciones Biológicas IIB-CONICET, Universidad Nacional de Mar del Plata, Mar del Plata, Argentina.
- Award Id(s): PICT 1956,PICT 0173,PICT-2017-0201
- Award Id(s): ARG 19-06
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Anabella Aguilera, Federico Berdun, Carlos Bartoli, Charlotte Steelheart, Matías Alegre, Hülya Bayir, Yulia Y. Tyurina, Valerian E. Kagan, Graciela Salerno, Gabriela Pagnussat, María Victoria Martin; C-ferroptosis is an iron-dependent form of regulated cell death in cyanobacteria. J Cell Biol 7 February 2022; 221 (2): e201911005. doi: https://doi.org/10.1083/jcb.201911005
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