Glutathione is such a critical soldier in our line of defense that our bodies make it themselves. We even have mechanisms that recycle and reuse it. But what happens when our toxic Tumor targeted glutathione oxidation catalysis with ruthenium nanoreactors against hypoxic osteosarcoma Nature Communications Frontiers Glutathione responsive and exhausting metal nanomedicines for robust synergistic cancer therapy Frontiers Glutathione responsive and exhausting metal nanomedicines for robust synergistic cancer therapy