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Caspase glo 3 7 luminescence assay

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The Caspase-Glo 3/7 luminescence assay is a reagent system that measures the activity of caspase-3 and caspase-7, two key enzymes involved in the apoptotic pathway. The assay utilizes a luminogenic caspase-3/7 substrate, which upon cleavage by the enzymes, generates a luminescent signal proportional to the amount of caspase activity present in the sample.

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20 protocols using caspase glo 3 7 luminescence assay

1

Measuring Apoptosis Markers in Cell Lines

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We measured caspase 3 and 7 activity as indicators of apoptosis. 3T3 cells were nucleofected with pControl or pFlag-UCKL-1 and incubated for 16 hours at 37°C. Staurosporine (12.5 nM) was then added for an additional 6 hours. Caspase activity and cell counts were assessed 22 hours after nucleofection. K562 cells were nucleofected with pControl or pFlag-UCKL-1 and incubated for 16 hours at 37°C. Staurosporine (2.5 μM) or etoposide (50 μM) (Sigma, St. Louis, MO) was then added for an additional 8 hours. Caspase activity was measured 24 hours after nucleofection. Activity was assessed using the Caspase-Glo 3/7 luminescence assay (Promega, Madison, WI), following the manufacturer’s instructions. Triplicate samples were analyzed for luminescence using a microplate reader (Bio-Tek, Winooski, VT). Caspase activity in UCKL-1 transfected cells was calculated relative to control transfected cells.
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2

Apoptosis Quantification Protocol

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Caspase-3/7 activation was measured using the Caspase-Glo 3/7 Luminescence assay (Promega), according to the manufacturer's instructions. Annexin V was measured using a FITC Annexin V/Dead Cell Apoptosis Kit (ThermoFisher). The flow cytometry data were analyzed using FlowJo (v10.2).
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3

Caspase-3/7 Activity in Kidney Apoptosis

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Apoptosis was assessed in whole kidney lysates using the Caspase-Glo 3/7 luminescence assay (Promega) measuring levels of active-caspase 3/7, as previously described(29 (link)). Luminescence was measured using a Turner Biosystems luminometer (Promega). Experiments were performed in 10 independent kidney samples each, from RCALC2 mutant mice and WT littermates. Data was expressed as fold change±SEM for each group. Statistical analyses were performed using two-way ANOVA.
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4

GHK Peptide Effects on MSC Proliferation

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MSC were seeded at 2.5×105 cells/cm2 in multi-well plates and allowed to adhere overnight. Media was refreshed with media supplemented with GHK peptide (G4GHKSP, Commonwealth Biotechnologies) at 1, 10, 100, or 500 ng/mL, together with ammonium tetrathiomolybdate (50 μg/mL, Acros Organics) to deplete endogenous copper from serum [26 (link), 28 (link)]. Unless otherwise stated, all experiments were performed in the presence of CuCl2 (40 μM, Fisher Scientific) [29 ] to provide a more consistent concentration of copper than achievable with FBS. MSC were cultured for 3 days, and metabolic activity was measured using alamarBlue (AbD Serotec) according to the manufacturer’s instruction. Cells were collected in 1X passive lysis buffer (Promega), and protein concentration and DNA content were determined using the Micro BCA protein assay kit (Thermo Scientific) and Quant-iT Pico Green dsDNA assay kit (Invitrogen), respectively. Cell morphology was examined by brightfield microscopy on day 3 using a Nikon Eclipse TE2000-U and SpotRT digital camera. To determine apoptosis in GHK-exposed cells, MSC were collected in passive lysis buffer after incubation with GHK for 3 days, and caspase activity was quantified using the Caspase-Glo 3/7 luminescence assay (Promega). Luminescence was measured on a multifunctional plate reader (Synergy HTTR) and normalized to DNA content within each well [30 ].
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5

Apoptosis Assay Protocol

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Caspase-3/7 activation was measured using the Caspase-Glo 3/7 Luminescence assay (Promega), according to the manufacturer's instructions. Annexin V was measured using a FITC Annexin V/Dead Cell Apoptosis Kit (ThermoFisher). The flow cytometry data were analyzed using FlowJo.
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6

Amylin Oligomers Induce Caspase 3/7 Activity

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Caspase 3/7 activity in HBVP after 3, 6, 12, 18 and 24 h exposure to oligomer-EP, fibril-EP amylin or their control was analysed using Caspase-Glo 3/7 luminescence assay according to the manufacturer’s instructions (Promega, Fitchburg, WI). The cell experiment was performed in triplicate at each time point.
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7

Caspase-3/7 Activity Assay Protocol

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Caspase-3/7 activation was measured using the Caspase-Glo 3/7 Luminescence Assay (Promega Corp. Madison, Wisc., USA) according to the manufacturer’s instructions. In a 6-well plate 3×105 cells were incubated. The day after, the cells were treated with siRNAs or PDGFRB inhibitors, for 72 h. Then, the cells were collected by trypsinization, and approximately 15×103 cells were transferred in a 96-well white plate. Caspase-3/7-Glo reagent was added, and the samples were incubated at 37°C for 1 h. The luminescence that is proportional to the caspase 3/7 activities was determined by luminometer (Tecan Sunrise, Austria GMBH).
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8

Quantifying Cell Death Pathways

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DNA fragmentation and caspase‐3/7 activation were assayed using the Cell Death Detection ELISAPLUS kit (Roche, USA) and the Caspase‐Glo 3/7 Luminescence Assay (Promega Corp, Madison, WI), respectively, according to the manufacturer's instructions.
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9

Apoptosis and Senescence Quantification

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Apoptosis was quantified using Caspase-Glo 3/7 luminescence assay (Promega, G8091). Senescence staining was carried out using SA-β-Galactosidase Staining Kit (Cell Signalling Technologies, 9680) and quantified using Galacto-Light Plus Beta-Galactosidase Reporter Gene Assay System (Invitrogen, T1007) following the manufacturer’s protocol, except modified to use lysosomal reaction buffer (100 mM sodium phosphate pH 6, 20 μM MgCl2).
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10

Apoptosis Assessment via ELISA and Luminescence

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DNA fragmentation and Caspase 3/7 activation were assayed using the Cell Death Detection ELISA plus kit (Roche, USA) and the Caspase-Glo 3/7 Luminescence Assay (Promega Corp. Madison, WI, USA), respectively, according to the manufacturer’s instructions.
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