Research Article

Deoxycholate, an Endogenous Cytotoxin/Genotoxin, Induces the Autophagic Stress-Survival Pathway: Implications for Colon Carcinogenesis

Figure 5

Effect of antioxidants and an antioxidant enzyme on protein expression of beclin-1. Cells were pretreated for 2 hours with either catalase, HBED, MnTBAP, or CuDIPS, followed by a 24-hour incubation with 0.2 mM DOC. (a) All pretreatments decreased both the constitutive beclin-1 protein levels and the DOC-induced increase in beclin-1 protein levels, with catalase being the most effective. (b) The Brilliant Blue loading control with the position of the beclin-1 band indicated by the arrow.
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(a)
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(b)