Cell Signaling Technology

Product Pathways - Apoptosis

Cleaved Caspase-8 (Asp391) (18C8) Rabbit mAb #9496

Applications Reactivity Sensitivity MW (kDa) Isotype
W IHC-P IF-IC F H Endogenous 18, 41, 43 Rabbit IgG

Applications Key:  W=Western Blotting  IHC-P=Immunohistochemistry (Paraffin)  IF-IC=Immunofluorescence (Immunocytochemistry)  F=Flow Cytometry
Reactivity Key:  H=Human
Species cross-reactivity is determined by western blot. Species enclosed in parentheses are predicted to react based on 100% sequence homology.

Protocols

Specificity / Sensitivity

Cleaved Caspase-8 (Asp391) (18C8) Rabbit mAb detects human Caspase-8 when cleaved at Asp391 (isoform A, Asp374 on isoform B). This antibody will detect cleavage products containing the pro-domain with the p18 subunit as well as the p18 subunit alone.

Source / Purification

Monoclonal antibody is produced by immunizing animals with a synthetic peptide corresponding to residues adjacent to Asp391 of human Caspase-8.

Western Blotting

Western Blotting

Western blot analysis of HeLa cells transfected with the death receptors Fas and DR5, or treated with cycloheximide (CHX) and TNF-alpha using Cleaved Caspase-8 (Asp391) (18C8) Rabbit mAb (upper), or total Caspase-8 (1C12) Mouse mAb (lower).

IHC-P (paraffin)

IHC-P (paraffin)

Immunohistochemical analysis of paraffin-embedded human colon (chronic inflammation) using Cleaved Caspase-8 (Asp391) (18C8) Rabbit mAb.

IHC-P (paraffin)

IHC-P (paraffin)

Immunohistochemical analysis of paraffin-embedded HeLa cells, untreated (left) or Cycloheximide and TNFα-treated (right), using Cleaved Caspase-8 (Asp391) (18C8) Rabbit mAb.


IHC-P (paraffin)

IHC-P (paraffin)

Immunohistochemical analysis of paraffin-embedded human Non-Hodgkin's lymphoma using Cleaved Caspase-8 (Asp391) (18C8) Rabbit mAb.

Flow Cytometry

Flow Cytometry

Flow cytometric analysis of Jurkat cells, untreated (blue) or etoposide-treated (green), using Cleaved Caspase-8 (Asp391) (18C8) Rabbit mAb compared to a nonspecific negative control antibody (red).

IF-IC

IF-IC

Immunofluorescent staining of HeLa cells untreated or treated with cytotoxic anti-Fas Antibody, using Cleaved Caspase-8 (Asp391) (18C8) Rabbit mAb.


Background

Apoptosis induced through the CD95 receptor (Fas/APO-1) and tumor necrosis factor receptor 1 (TNFR1) activates caspase-8 and leads to the release of the caspase-8 active fragments, p18 and p10 (1-3). Activated caspase-8 cleaves and activates downstream effector caspases such as caspase-1, -3, -6, and -7. Caspase-3 ultimately elicits the morphological hallmarks of apoptosis, including DNA fragmentation and cell shrinkage.

  1. Muzio, M. et al. (1996) Cell 85, 817-827.
  2. Boldin, M.P. et al. (1996) Cell 85, 803-815.
  3. Fernandes-Alnemri, T. et al. (1996) Proc. Natl. Acad. Sci. USA 93, 7464-7469.

Application References

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Companion Products

Rabbit Monoclonals Produced Using Epitomics® Technology, U.S. Patent No. 5,675,063.


For Research Use Only. Not For Use In Diagnostic Procedures.

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