What question did this study set out to answer?

To review the distinct physiological, signaling, and transcription-modulating functions of mammalian glutathione peroxidases beyond their classical roles as redundant antioxidant enzymes.

January 1, 2006Biological Chemistry

Glutathione peroxidases and redox-regulated transcription factors

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RBRegina Brigelius‐FlohéGerman Institute of Human Nutrition

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Narrative review reveals specialized redox-sensing and transcription-modulating functions across mammalian glutathione peroxidases, indicating distinct biological roles beyond basic antioxidant...

Key Points

To review the distinct physiological, signaling, and transcription-modulating functions of mammalian glutathione peroxidases beyond their classical roles as redundant antioxidant enzymes.
Evaluated molecular and genetic evidence across five mammalian selenoprotein glutathione peroxidases: GPx1, GPx2, GPx3, GPx4, and GPx6.
Examined mechanistic interactions involving cellular redox sensing, eicosanoid biosynthesis, and transcription factors including NF-κB and Nrf2 in knockout and cancer models.
Cytosolic GPx (GPx1) serves primarily as a direct hydroperoxide-clearing antioxidant, as evidenced by GPx1-knockout models.
Phospholipid hydroperoxide GPx (GPx4) suppresses interleukin-1-induced NF-κB activation, inhibits COX-2 expression, downregulates leukotriene and prostanoid synthesis, and is essential for embryogenesis and sperm maturation.
Gastrointestinal GPx (GPx2) is regulated by Nrf2 as an adaptive response factor and shows elevated expression in colon and skin malignancies.

Cite This Study

Regina Brigelius‐Flohé (2006) studied this question.

synapsesocial.com/papers/6a7a99ad14b028facf0e7348 https://doi.org/10.1515/bc.2006.166

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Implication

Narrative review reveals specialized redox-sensing and transcription-modulating functions across mammalian glutathione peroxidases, indicating distinct biological roles beyond basic antioxidant...

Glutathione peroxidases and redox-regulated transcription factors

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Implication

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Cite This Study

Glutathione peroxidases and redox-regulated transcription factors

Discussion

Member takes

Implication

Key Points

Cite This Study

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