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. Author manuscript; available in PMC: 2008 Dec 20.
Published in final edited form as: Mol Cell. 2008 Jun 20;30(6):678–688. doi: 10.1016/j.molcel.2008.06.001

Figure 6. Constitutively Active and Dominant Negative JNK1 Regulate Bcl-2 Phosphorylation, Bcl-2 Binding to Beclin 1 and Starvation-Induced Autophagy.

Figure 6

(A) Effects of constitutively active JNK1 and dominant negative JNK1 on Bcl-2 phosphorylation (upper panel) and Bcl-2 co-immunoprecipitation with Beclin 1 (second panel) in MCF7.beclin 1 cells during growth in normal media (starvation -) or in HBSS for four hours (starvation +). Lower panels represent total amount of Beclin 1 (third panel), Bcl-2 (fourth panel), MKK7-JNK1 (fifth panel) or active MKK-JNK1 (MKK-P-JNK1) (sixth panel) detected in cell lysates by Western blot analysis with indicated antibody.

(B) Representative images of GFP-LC3 staining in MCF7.beclin 1 cells co-transfected with GFP-LC3 and indicated plasmid. Arrows denote representative cells containing GFP-LC3 dots (i.e. autophagosomal structures).

(C and D) Light microscopic quantitation of autophagy in MCF7.beclin 1 cells co-transfected with GFP-LC3 and plasmid(s) indicated below x axis. Results shown represent mean ± SEM for triplicate samples of greater than 100 cells per sample. Similar results were obtained in three independent experiments.