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Casp1 assay buffer

Manufactured by Enzo Life Sciences

CASP1 assay buffer is a solution used to maintain the activity and stability of the CASP1 enzyme during experimental procedures. It provides the necessary environmental conditions for the enzyme to function properly.

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4 protocols using casp1 assay buffer

1

Caspase-1 Enzymatic Assay Protocol

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Recombinant human CASP1 (100–200 U, where U = 1 pmol/min at 30°C, 200 µM YVAD-pNA) from a CASP1 assay kit for drug discovery (Enzo Life Sciences, catalog number BML-AK701-0001) was incubated at 30°C with wild-type or mutated glucocorticoid receptor in the presence (10 µM unless otherwise indicated) or absence of inhibitors, (Ac-YVAD-CHO, Enzo Life Sciences, catalog number BML-P403-9090), VX765, VRT-043198. Substrates for enzyme assays were prepared in CASP1 assay buffer (Enzo Life Sciences, catalog number KI-111) consisting of 50 mM HEPES, pH7.4, 100 mM NaCl, 0.1% CHAPS, 10 mM DTT, 1 mM EDTA and 10% glycerol.
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2

Caspase-1 Enzymatic Assay Protocol

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Recombinant human CASP1 (100–200 U, where U = 1 pmol/min at 30°C, 200 µM YVAD-pNA) from a CASP1 assay kit for drug discovery (Enzo Life Sciences, catalog number BML-AK701-0001) was incubated at 30°C with wild-type or mutated glucocorticoid receptor in the presence (10 µM unless otherwise indicated) or absence of inhibitors, (Ac-YVAD-CHO, Enzo Life Sciences, catalog number BML-P403-9090), VX765, VRT-043198. Substrates for enzyme assays were prepared in CASP1 assay buffer (Enzo Life Sciences, catalog number KI-111) consisting of 50 mM HEPES, pH7.4, 100 mM NaCl, 0.1% CHAPS, 10 mM DTT, 1 mM EDTA and 10% glycerol.
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3

Quantitative Western Blot Analysis

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In brief, cells were pelleted by centrifugation, washed once with PBS and lysed with RIPA buffer or CASP1 assay buffer (Enzo Life Sciences, catalog number KI-111), equal amounts of proteins (1–20 µg) separated by 4–12% Novex Bis-Tris gels (Life Technologies), and then transblotted to PVDF membranes (Life Technologies). Anti-glucocorticoid receptor (1:1000–1:10,000, BD catalog number 611227), anti-CASP1 p20 (Adipogen catalog number AG-20B-0048), anti-DDK tubulin (1:1000, Origene catalog number TA50011), anti-Bim (1:1000, Cell Signaling catalog number 2819) anti-Tubulin (1:1000, Santa Cruz, sc-8035), or anti-HSP90 (1:1000, Cell Signaling catalog number 4874) were used as primary antibodies followed by appropriate secondary HRP-conjugated IgG (1:1000, Dako) and immunocomplexes were visualized by chemiluminescence using a Chemidoc Imager (BioRad). Signal intensities of CASP1 and glucocorticoid receptor where quantified using Quantity One Software (BioRad) and normalized for the signal intensity of the loading control in the same lane.
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4

Quantitative Western Blot Analysis

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In brief, cells were pelleted by centrifugation, washed once with PBS and lysed with RIPA buffer or CASP1 assay buffer (Enzo Life Sciences, catalog number KI-111), equal amounts of proteins (1–20 µg) separated by 4–12% Novex Bis-Tris gels (Life Technologies), and then transblotted to PVDF membranes (Life Technologies). Anti-glucocorticoid receptor (1:1000–1:10,000, BD catalog number 611227), anti-CASP1 p20 (Adipogen catalog number AG-20B-0048), anti-DDK tubulin (1:1000, Origene catalog number TA50011), anti-Bim (1:1000, Cell Signaling catalog number 2819) anti-Tubulin (1:1000, Santa Cruz, sc-8035), or anti-HSP90 (1:1000, Cell Signaling catalog number 4874) were used as primary antibodies followed by appropriate secondary HRP-conjugated IgG (1:1000, Dako) and immunocomplexes were visualized by chemiluminescence using a Chemidoc Imager (BioRad). Signal intensities of CASP1 and glucocorticoid receptor where quantified using Quantity One Software (BioRad) and normalized for the signal intensity of the loading control in the same lane.
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