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should be subtracted before calculating fold increase in Caspase-3 activity. VI. EXAMPLES OF USING THE KIT JK cells were cultured in an incubator containing 5% CO 2 at 37℃ and stimulated by H2O2 for 6 hours to induce apoptosis. The procedure was done as instrument manual described.
Cell biology kits
Caspase-3 Colorimetric Assay Kit
$350/ 100T
QuantityTotal: $350
Ship worldwide. Contact order@enogene.com for ordering and bulk pricing or contact your local distributor.
Price350$
Research AreaCell Biology
Storage/StabilityStore the kit at -20℃, while store the Lysis Buffer and 2×Reaction Buffer at 4℃ after opened. All reagents will remain stable for one year.
Product Information
Experimental MethodsCASPASE-3 COLORIMETRIC ASSAY KIT PROTOCOL
Α. General Considerations
• Aliquot enough 2X Reaction Buffer for the number of assays to be performed. Add DTT into the 2X Reaction Buffer immediately to 10 mM final concentration before use (add 10 μl of 1.0 M DTT stock in per 1ml 2X Reaction Buffer).
• After thawing, store the Lysis Buffer at 4℃.
• Do not expose Caspase-3 Substrate from light.
B. Assay Procedure
1.Induce cells apoptosis with required way and set negative control.
2.Collect cells and wash cells twice with PBS by centrifugation in 2000 rpm for 5 min.
3.Collect 3～5×106 cells, try to remove PBS
4.Add 50µl cold Lysis Buffer into collected cells, mix uniformity (Note: Before using Lysis Buffer, add 0.5 µl DTT into 50 µl Lysis Buffer)
5.Incubate cells on ice for 20～60 min, vortex vibration 3-4 times,10 s per time, or freeze thawing 2-3 times.
6.Centrifugation in 10,000 rpm at 4 ℃ for 1 min.
7.Suck supernatant and transfer to a new tube, put it on ice
8.Get a small quantity supernatant to assay the protein concentration by Bradford or BCA method.
9.Take 50 µl supernatant containing 100～200µg protein. If there is no enough volume, Lysis Buffer can be compensated.
10.Add 50 µl 2×Reaction Buffer (Note: add 0.5 µl DTT into 50 µl 2×Reaction Buffer)
11.Add 5 µl Caspase-3 Substrate and incubate away from light at 37℃ for 4 hours.
12.Determine extinction value of samples by a spectrophotometer (using a 100 μl micro quartz cuvet) or a microtiter plate reader at 400 nm or 405nm. Get the result of the induced group’s Caspase-3 activity by computing ODinducer/ODnegtive control.
Note: Background of cell lysates buffers from the readings of induced samples and negative control should be subtracted before calculating fold increase in Caspase-3 activity.
Α. General Considerations
• Aliquot enough 2X Reaction Buffer for the number of assays to be performed. Add DTT into the 2X Reaction Buffer immediately to 10 mM final concentration before use (add 10 μl of 1.0 M DTT stock in per 1ml 2X Reaction Buffer).
• After thawing, store the Lysis Buffer at 4℃.
• Do not expose Caspase-3 Substrate from light.
B. Assay Procedure
1.Induce cells apoptosis with required way and set negative control.
2.Collect cells and wash cells twice with PBS by centrifugation in 2000 rpm for 5 min.
3.Collect 3～5×106 cells, try to remove PBS
4.Add 50µl cold Lysis Buffer into collected cells, mix uniformity (Note: Before using Lysis Buffer, add 0.5 µl DTT into 50 µl Lysis Buffer)
5.Incubate cells on ice for 20～60 min, vortex vibration 3-4 times,10 s per time, or freeze thawing 2-3 times.
6.Centrifugation in 10,000 rpm at 4 ℃ for 1 min.
7.Suck supernatant and transfer to a new tube, put it on ice
8.Get a small quantity supernatant to assay the protein concentration by Bradford or BCA method.
9.Take 50 µl supernatant containing 100～200µg protein. If there is no enough volume, Lysis Buffer can be compensated.
10.Add 50 µl 2×Reaction Buffer (Note: add 0.5 µl DTT into 50 µl 2×Reaction Buffer)
11.Add 5 µl Caspase-3 Substrate and incubate away from light at 37℃ for 4 hours.
12.Determine extinction value of samples by a spectrophotometer (using a 100 μl micro quartz cuvet) or a microtiter plate reader at 400 nm or 405nm. Get the result of the induced group’s Caspase-3 activity by computing ODinducer/ODnegtive control.
Note: Background of cell lysates buffers from the readings of induced samples and negative control should be subtracted before calculating fold increase in Caspase-3 activity.
should be subtracted before calculating fold increase in Caspase-3 activity. VI. EXAMPLES OF USING THE KIT JK cells were cultured in an incubator containing 5% CO 2 at 37℃ and stimulated by H2O2 for 6 hours to induce apoptosis. The procedure was done as instrument manual described.
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