Targeting Genes of Cd Induced Oxidative Stress Response in Yeasts

Petrova, Ventsislava Yankova; Pisareva, Emiliya; Angelov, Angel; Kujumdzieva, Anna

doi:10.5504/bbeq.2012.0127

Cited by 4 publications

(1 citation statement)

References 42 publications

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“…Therefore, to determine the acute effect of Cd exposure on the fission yeast, the cells were treated with the toxicant for 3 h, and longer incubation periods, 6 and 9 h of treatment, were performed for long-term effect determination. As cell survival is dramatically affected by Cd exposure, several working groups investigated cell responses to various Cd concentrations [ 16 , 17 , 18 , 19 ]. The IC 50 value represents the metal concentration that inhibits cell growth to 50%.…”

Section: Resultsmentioning

confidence: 99%

Cadmium-Induced Cell Homeostasis Impairment is Suppressed by the Tor1 Deficiency in Fission Yeast

Požgajová

Navrátilová

Šebová

et al. 2020

IJMS

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Cadmium has no known physiological function in the body; however, its adverse effects are associated with cancer and many types of organ system damage. Although much has been shown about Cd toxicity, the underlying mechanisms of its responses to the organism remain unclear. In this study, the role of Tor1, a catalytic subunit of the target of rapamycin complex 2 (TORC2), in Cd-mediated effects on cell proliferation, the antioxidant system, morphology, and ionome balance was investigated in the eukaryotic model organism Schizosaccharomyces pombe. Surprisingly, spectrophotometric and biochemical analyses revealed that the growth rate conditions and antioxidant defense mechanisms are considerably better in cells lacking the Tor1 signaling. The malondialdehyde (MDA) content of Tor1-deficient cells upon Cd treatment represents approximately half of the wild-type content. The microscopic determination of the cell morphological parameters indicates the role for Tor1 in cell shape maintenance. The ion content, determined by inductively coupled plasma optical emission spectroscopy (ICP-OES), showed that the Cd uptake potency was markedly lower in Tor1-depleted compared to wild-type cells. Conclusively, we show that the cadmium-mediated cell impairments in the fission yeast significantly depend on the Tor1 signaling. Additionally, the data presented here suggest the yet-undefined role of Tor1 in the transport of ions.

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