Journal: The Journal of Biological Chemistry
Article Title: Matrix Metalloproteinase-3 Is Increased and Participates in Neuronal Apoptotic Signaling Downstream of Caspase-12 during Endoplasmic Reticulum Stress *
doi: 10.1074/jbc.M109.093799
Figure Lengend Snippet: Cellular TIMP-1 is protective and decreases in response to ER stress. A, typical Western blot of TIMP-1 on lysate of CATH.a cells that has been exposed to 1 μm BFA for various time periods. B, typical Western blot against TIMP-1 on lysates of CATH.a cells transfected with caspase-12 siRNA (#1 or #2) or negative siRNA control (N) and subsequently treated with BFA. C, TIMP-1 Western blot on lysate of CATH.a cells that was pretreated with 1 μm Z-ATAD-FMK for 1 h followed by 1 μm BFA for 24 h. D and E, CATH.a cells transfected with TIMP-1 cDNA were exposed to BFA, extent of cell death was monitored by TUNEL staining, and TUNEL-positive cells were counted and expressed as the percentage of total cells (D), and MMP-3 enzyme activity was measured (E). *, p < 0.05; **, p < 0.01 versus respective untreated control; +, p < 0.05; ++, p < 0.01 versus mock transfected BFA-treated.
Article Snippet: Primary antibodies used were goat polyclonal anti-mouse MMP-3 antibody (R&D Systems Inc., Minneapolis, MN), goat polyclonal anti-human MMP-3 antibody (BioVision), goat polyclonal anti-mouse TIMP-1 antibody (R&D Systems Inc.), mouse monoclonal anti-human TIMP-1 antibody (Calbiochem), rabbit polyclonal anti-mouse caspase-12 antibody (Cell Signaling Technology Inc., Beverly, MA), and rabbit anti-mouse cleaved caspase-3 (Asp-175) antibody (Cell Signaling Technology Inc.).
Techniques: Western Blot, Transfection, TUNEL Assay, Staining, Activity Assay