Detect caspase-8 activity with the FLICA Caspase-8 Assay Kit. This in vitro assay employs the fluorescent inhibitor probe FAM-LETD-FMK to label active caspase-8 enzyme in living cells. Analyze samples using fluorescence microscopy, a fluorescence plate reader, or flow cytometry.

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FAM-FLICA® Caspase-8 Assay Kit
SKU: 99

Size: 25 Tests
Sale price$209.00

Bulk Order FAM-FLICA® Caspase-8 Assay Kit

Caspases play important roles in apoptosis and inflammation. ICT’s FLICA assay kits are used by researchers seeking to quantitate apoptosis via caspase activity in cultured cells and tissues. The FAM FLICA Caspase-8 assay probe allows researchers to assess caspase-8 activation. The FLICA reagent FAM-LETD-FMK enters each cell and irreversibly binds to activated caspase-8. Because the FAM-LETD-FMK FLICA reagent becomes covalently coupled to the active enzyme, it is retained within the cell, while any unbound FAM-LETD-FMK FLICA reagent diffuses out of the cell and is washed away. The remaining green fluorescent signal is a direct measure of the active caspase-8 enzyme activity present in the cell at the time the reagent was added. Cells that contain the bound FLICA can be analyzed by a fluorescence plate reader, fluorescence microscopy, or flow cytometry. Cells labeled with the FLICA reagent may be read immediately or preserved for 16 hours using the fixative included in the kit. Unfixed samples may also be analyzed with Propidium Iodide or Hoechst 33342 to detect necrosis or changes in nuclear morphology, respectively.
488 nm / 530 nm
Flow Cytometer, Fluorescence Microscope, Fluorescence Plate Reader
Cell culture
Domestic: Overnight Delivery; International: Priority Shipping
United States
  1. Prepare samples and controls
  2. Dilute 10X Apoptosis Wash Buffer 1:10 with diH20.
  3. Reconstitute FLICA with 50 μL DMSO.
  4. Dilute FLICA 1:5 by adding 200 μL PBS.
  5. Add diluted FLICA to each sample at 1:30 (e.g., add 10 μL to 290 μL of cultured cells).
  6. Incubate approximately 1 hour.
  7. Remove media and wash cells 3 times: add 1X Apoptosis Wash Buffer and spin cells.
  8. If desired, label with additional stains, such as Hoechst, Propidium Iodide, 7-AAD, or an antibody.
  9. If desired, fix cells.
  10. Analyze with a fluorescence microscope, fluorescence plate reader, or flow cytometer. FAM-FLICA excites at 492 nm and emits at 520 nm.

If working with adherent cells, please see the manual for additional protocols.

Kit 99: 25 Tests
  • FLICA Caspase-8 Reagent (FAM-LETD-FMK), 1 vial, #656
  • 10X Apoptosis Wash Buffer, 15 mL, #635
  • Fixative, 6 mL, #636
  • Propidium Iodide, 1 mL, #638
  • Hoechst 33342, 1 mL, #639
  • Kit Manual
  • Kit 910: 100 Tests
  • FLICA Caspase-8 Reagent (FAM-LETD-FMK), 4 vials, #656
  • 10X Apoptosis Wash Buffer, 60 mL, #634
  • Fixative, 6 mL, #636
  • Propidium Iodide, 1 mL, #638
  • Hoechst 33342, 1 mL, #639
  • Kit Manual
  • Product Specific References

    PMID Publication
    36604548Chao, Y.Y., et al. 2023. Human TH17 cells engage gasdermin E pores to release IL-1α on NLRP3 inflammasome activation. Nature immunology, 295-308.
    36768675Rok, J., et al. 2023. The Assessment of the Phototoxic Action of Chlortetracycline and Doxycycline as a Potential Treatment of Melanotic Melanoma—Biochemical and Molecular Studies on COLO 829 and G-361 Cell Lines. International Journal of Molecular Sciences, 2353.
    37001390Ivasechko, I., et al. 2023. Molecular design, synthesis and anticancer activity of new thiopyrano[2,3-d]thiazoles based on 5-hydroxy-1,4-naphthoquinone (juglone). European journal of medicinal chemistry, 115304.
    36902392Peng, Z., et al. 2023. Enhanced Apoptosis and Loss of Cell Viability in Melanoma Cells by Combined Inhibition of ERK and Mcl-1 Is Related to Loss of Mitochondrial Membrane Potential, Caspase Activation and Upregulation of Proapoptotic Bcl-2 Proteins. International journal of molecular sciences.
    37047765Gornowicz, A., et al. 2023. Multi-Targeting Anticancer Activity of a New 4-Thiazolidinone Derivative with Anti-HER2 Antibodies in Human AGS Gastric Cancer Cells. International journal of molecular sciences.
    37763082Mańka, S., et al. 2023. Cytotoxic Activity of Melatonin Alone and in Combination with Doxorubicin and/or Dexamethasone on Diffuse Large B-Cell Lymphoma Cells in In Vitro Conditions. Journal of Personalized Medicine, 1314.
    35055021Rok, J., et al. 2022. The Anticancer Potential of Doxycycline and Minocycline-A Comparative Study on Amelanotic Melanoma Cell Lines. International journal of molecular sciences.
    35270004González-Sarrías, A., et al. 2022. Milk-Derived Exosomes as Nanocarriers to Deliver Curcumin and Resveratrol in Breast Tissue and Enhance Their Anticancer Activity. International journal of molecular sciences, .
    35352212Hassona, S.M., et al. 2022. Palladium(II) Schiff base complex arrests cell cycle at early stages, induces apoptosis, and reduces Ehrlich solid tumor burden: a new candidate for tumor therapy. Investigational new drugs.
    36296570Janowska, S., et al. 2022. Synthesis and Anticancer Activity of 1,3,4-Thiadiazoles with 3-Methoxyphenyl Substituent. Molecules.
    35467089Kubiak, A.B., et al. 2022. The influence of venetoclax, used alone or in combination with cladribine (2-CdA), on CLL cells apoptosis in vitro: Preliminary results. Advances in clinical and experimental medicine : official organ Wroclaw Medical University.
    33500339Lima, T.S., et al. 2021. Toxoplasma gondii Extends the Life Span of Infected Human Neutrophils by Inducing Cytosolic PCNA and Blocking Activation of Apoptotic Caspases. mBio, 125134.

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