A Paradoxical Chemoresistance and Tumor Suppressive Role of Antioxidant in Solid Cancer Cells: A Strange Case of Dr. Jekyll and Mr. Hyde

Table 1

Endogenous antioxidants.

Endogenous antioxidants	Examples
Enzymes	Superoxide dismutase
	Catalase
	Peroxiredoxins
GSH enzyme-linked system	Glutathione peroxidase
	Glutathione S-transferase
	Glutathione reductase
Nonenzymes	Glutathione
	Cysteine
	Thioredoxin
Metal-binding proteins	Ferritin
	Metallothionein
	Ceruloplasmin