Journal: Molecular Medicine Reports
Article Title: Hypoxia-induced autophagy contributes to the invasion of salivary adenoid cystic carcinoma through the HIF-1α/BNIP3 signaling pathway
doi: 10.3892/mmr.2015.4255
Figure Lengend Snippet: HIF-1α/BNIP3 pathway is activated in ACC-M cells treated with CoCl 2 . The ACC-M cells were cultured with 200 µ M CoCl 2 for the indicated time-periods. Untreated cells (0 h group) served as a control. (A) Variations in the protein expression levels of HIF-1α and BNIP3 were compared using western blotting, with GAPDH as an internal control. (B) Expression levels of autophagy-associated proteins were increased in the ACC-M cells treated with CoCl 2 . The ACC-M cells were cultured with 200 µ M CoCl 2 for the indicated time-periods. Untreated cells t (0 h group) served as a control. Variations in the protein expression levels of Beclin 1 and LC3 were compared using western blotting, with GAPDH as an internal control. (C) Variations in the mRNA expression levels of HIF-1α, BNIP3 and Beclin1 were examined using reverse transcription-quantitative polymerase chain reaction. The ACC-M cells were cultured with 200 µ M CoCl 2 for the indicated time-periods. Untreated cells (0 h group) served as a control. * P<0.05, ** P<0.01 and *** P<0.001, vs. control group. The data are presented as the mean ± standard error of the mean of three independent experiments with duplicates. (D) Double immunofluorescent staining for HIF-1α and BNIP3 in the ACC-M cells treated with CoCl 2 . (a) HIF-1α, (b) BNIP3, (c) merged signals, (d) DAPI staining in the nucleus. The staining was observed by fluorescence microscopy; magnification, ×400. HIF-1α, hypoxia-inducible factor 1α; BNIP3, B cell lymphoma 2/adenovirus E1B 19K-interacting protein 3; CoCl 2 , cobalt chloride; ACC, adenoid cystic carcinoma.
Article Snippet: Antibodies targeting HIF-1α and B cell lymphoma 2 (Bcl-2)/adenovirus E1B 19K-interacting protein 3 (BNIP3) were purchased from Santa Cruz Biotechnology, Inc. (Dallas, TX, USA).
Techniques: Cell Culture, Control, Expressing, Western Blot, Reverse Transcription, Real-time Polymerase Chain Reaction, Staining, Fluorescence, Microscopy