Title : Manganese superoxide dismutase activity regulates transitions between quiescent and proliferative growth.

Pub. Date : 2008 Jun

PMID : 18331617






4 Functional Relationships(s)
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1 MnSOD +/- and -/- MEFs demonstrated increased superoxide steady-state levels; these fibroblasts failed to exit from the proliferative cycle, and showed increasing cyclin D1 and cyclin B1 protein levels. Superoxides superoxide dismutase 2, mitochondrial Mus musculus
2 Overexpression of MnSOD in MnSOD +/- MEFs suppressed superoxide levels and G(2) accumulation, decreased cyclin B1 protein levels, and facilitated cells" transit into quiescence. Superoxides superoxide dismutase 2, mitochondrial Mus musculus
3 Overexpression of MnSOD in MnSOD +/- MEFs suppressed superoxide levels and G(2) accumulation, decreased cyclin B1 protein levels, and facilitated cells" transit into quiescence. Superoxides superoxide dismutase 2, mitochondrial Mus musculus
4 These results support the hypothesis that MnSOD activity regulates a mitochondrial "ROS-switch" favoring a superoxide-signaling regulating proliferation and a hydrogen peroxide-signaling supporting quiescence. Superoxides superoxide dismutase 2, mitochondrial Mus musculus