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20 protocols using caspaseglo kit

1

Isolation and Characterization of Primary Muscle Cells

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Primary muscle cultures (pp6) were isolated as described (Qu et al., 1998 (link)) from the indicated mouse lines. FoxO3-depleted (FoxO-KO) pp6 cells were prepared from foxO3+/− mice as previously described (Dentice et al., 2010 (link)). C2C12 cells were obtained from ATCC. In some experiments, endogenous T3 and T4 were removed from the FBS by charcoal absorption (Larsen, 1972 (link)). Transient transfections were performed using Lipofectamine 2000 (Life Technologies) according to the manufacturer’s instructions. Single myofibers were prepared from the extensor digitorumlongus and gastrocnemius muscles of 6- to 12-week-old mice as previously described (Rosenblatt et al., 1995 (link)). Pax7Hi-Lo isolation by FACS has been described elsewhere (Rocheteau et al., 2012 (link)). Anti-MyoD (sc-304), myogenin (sc-12732), tubulin (sc-8035), and anti-FoxO3 antibodies were purchased from Santa Cruz Biotechnology. Polyclonal anti-MHC antibody (MF-20a) and anti-Pax7 antibody were from Developmental Studies Hybridoma Bank. Anti-D3 antibody is described elsewhere (Huang et al., 2003 (link)). Anti-Desmin antibody was from MP Biomedicals (#10519). Anti-total Akt was from Upstate, and anti-pAkt and anti-PARP were from Cell Signaling Technology. TUNEL assay was performed using the ApopTag kit from Millipore. Caspase-3/Caspase-7 activity was measured by using the CaspaseGlo kit from Promega.
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2

Apoptosis Induction in ATII Cells

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ATII cells were collected after a 24 h treatment with bleomycin (Bleo, 50 mU/mL), dexamethasone (Dex, 100 nmol/L), a combination of bleomycin and dexamethasone (Bleo + Dex) or vehicle (Ctl, saline 0,9%) and then caspase‐3/7 activity was determined by luminescent assay (630/595 nm) using the Caspase Glo kit (Promega), following the manufacturer instructions.
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3

Apoptosis Assay for Glioma and Cancer Cells

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VUGX01 (VU0007775) was prepared at 20mM in DMSO. Glioma cells (C6), colorectal cancer lines (Difi, DLD1, HCT116), and human embryonic kidney cells Hek293, were each plated in multiple wells (1×104 cells per well) of 96-well plates. 24 hours after the seeding, VUGX01 or Cetuximab (purchased from Vanderbilt Hospital Pharmacy) was added into the wells of the plates for a 24 hours treatment, then apoptosis assays based on Caspase 3/7 activity were performed (caspase-Glo kit, Promega, Madison, WI) according to manufacturer-recommended procedures.
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4

Caspase 3/7 Activity Assay

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Cells were seeded at 1.0 × 105 cells in a 96-well plate. After the culture for 24 h, the test compounds were treated for 17 h. The caspase 3/7 activity was measured using the Caspase Glo kit (Promega, WI, USA) according to the manufacturer’s instructions. Cells were incubated with 100 μL of Caspase Glo reagent at room temperature for 60 min. Following the caspase cleavage, the substrate reacts with luciferase and releases luminescent light in the presence of ATP and oxygen. The luminescence of the reaction products was measured using a microplate reader (GLOMAX MULTI Detection system, Promega, WI, USA).
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5

Cell Viability and Apoptosis Assays

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Cell viability was determined by MTT assay as described previously (21 (link)). Long-term viability was determined by performing Clonogenic assays. Cell cycle analysis was performed by staining the cells with Telford reagent as described previously (22 (link)). Caspase 3/7 activity was determined by Promega Caspase-Glo kit (Madison, WI, USA) as described previously (23 (link), 24 ).
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6

Caspase Activity Measurement Protocol

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Activities of caspase-3/7 and -9 were measured in CCLR buffer with Caspase-Glo® kit (Promega, Madison, WI, USA; Caspase-3/7 –G811A, Caspase-9 –G8211) as described before [28 (link)]. Protein concentrations were measured with Pierce 660 assay (Thermo Fisher Scientific, 22660). Samples were introduced in a caspase-activity reagent mix to measure luminescence by GloMax® 20/20 Luminometer (Promega, E5311).
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7

Caspase 3/7 Activity Measurement

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Cells were seeded in a 96-well plate at a density of 3000 cells/well. Cell death was induced, and the Caspase 3/7 activity was measured at 24h and 48h using the caspase-glo kit (Promega #G8091). A fold change to untreated cells was taken to obtain caspase 3/7 activity.
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8

Annexin V and Caspase 3/7 Assay

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For the Annexin V assay, sub-confluent cells were cultured in 6-well plates and harvested by trypsinization. Cells were washed twice with cold PBS and then resuspended in binding buffer. Annexin V and propidium iodide (PI) staining were performed according to the manufacturer's instructions (Invitrogen, Carlsbad, CA, USA), and the Annexin V and PI signals were measured by FACS. To detect caspase 3/7 activities, the cells were cultured in 96-well plates at a density of 1×104 per well. After 24 h of treatment, the caspase 3/7 activity was determined by a Caspase-Glo kit (Promega). All of the experiments were performed in triplicate.
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9

Caspase-Mediated Apoptosis Assay

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FTY720 and DTX were purchased from Selleck Chemicals (Houston, USA) and LC laboratories (Woburn, USA), respectively. Caspase-GLO kit was obtained from Promega (Fitchburg, USA). Other reagents and chemicals used were purchased from Sigma-Aldrich (Dorset, UK) unless otherwise specified.
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10

Quantitative Caspase Activation Assay

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For caspase activation assays, cells were plated at a density of 104 cells/well in opaque 96-well plates 24 hours prior to treatment. Twenty-four hours after treatment, activation of effector caspases 3 and 7 was evaluated with Promega’s CaspaseGlo kit (G8090) following manufacturer’s instructions. Resulting mixtures were quantified after 30 minutes of incubation at room temperature in a Beckton Dickinson BD 3096 luminometer.
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