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AB108333

Anti-Pro Caspase-8 antibody [EPR162]

  • 20ul selling size
  • RabMAb
  • Recombinant
  • KO Validated
  • What is this?

4

(1 Review)

|

(53 Publications)

Rabbit Recombinant Monoclonal Caspase-8 antibody. Suitable for WB, IHC-P and reacts with Rat, Mouse, Human samples. Cited in 53 publications.

View Alternative Names

MCH5, CASP8, Caspase-8, CASP-8, Apoptotic cysteine protease, Apoptotic protease Mch-5, CAP4, FADD-homologous ICE/ced-3-like protease, FADD-like ICE, ICE-like apoptotic protease 5, MORT1-associated ced-3 homolog, FLICE, MACH

8 Images
Immunohistochemistry (Formalin/PFA-fixed paraffin-embedded sections) - Anti-Pro Caspase-8 antibody [EPR162] (AB108333)
  • IHC-P

Unknown

Immunohistochemistry (Formalin/PFA-fixed paraffin-embedded sections) - Anti-Pro Caspase-8 antibody [EPR162] (AB108333)

ab108333, at 1/100 dilution, staining Pro Caspase-8 in paraffin-embedded human tonsil tissue by Immunohistochemistry.

Perform heat mediated antigen retrieval with citrate buffer pH 6 before commencing with IHC staining protocol.

Immunohistochemistry (Formalin/PFA-fixed paraffin-embedded sections) - Anti-Pro Caspase-8 antibody [EPR162] (AB108333)
  • IHC-P

Unknown

Immunohistochemistry (Formalin/PFA-fixed paraffin-embedded sections) - Anti-Pro Caspase-8 antibody [EPR162] (AB108333)

ab108333, at 1/100 dilution, staining Pro Caspase-8 in paraffin-embedded human hepatocellular carcinoma by Immunohistochemistry.

Perform heat mediated antigen retrieval with citrate buffer pH 6 before commencing with IHC staining protocol.

Western blot - Anti-Pro Caspase-8 antibody [EPR162] (AB108333)
  • WB

Lab

Western blot - Anti-Pro Caspase-8 antibody [EPR162] (AB108333)

Lanes 1 - 3 : Merged signal (red and green). Green - ab108333 observed at 55 kDa. Red - loading control, ab8245, observed at 37 kDa.

This blot was produced using a 4-12% Bis-tris gel under the MOPS buffer system. The gel was run at 200V for 50 minutes before being transferred onto a Nitrocellulose membrane at 30V for 70 minutes. The membrane was then blocked for an hour using Licor blocking buffer before being incubated with ab108333 and ab8245 (loading control) overnight at 4°C. Antibody binding was detected using Goat anti-Rabbit IgG H&L (IRDye® 800CW) preabsorbed (ab216773) and Goat anti-Mouse IgG H&L (IRDye® 680RD) preabsorbed (ab216776) at a 1 : 10000 dilution for 1hr at room temperature and then imaged.

All lanes:

Western blot - Anti-Pro Caspase-8 antibody [EPR162] (ab108333) at 1/1000 dilution

Lane 1:

HepG2 whole cell lysate at 20 µg

Lane 2:

Rat liver tissue lysate at 20 µg

Lane 3:

Mouse liver tissue lysate at 20 µg

Secondary

All lanes:

Western blot - Goat anti-Rabbit IgG H&L (IRDye® 800CW) preadsorbed (<a href='/en-us/products/secondary-antibodies/goat-rabbit-igg-h-l-irdye-800cw-preadsorbed-ab216773'>ab216773</a>) at 1/10000 dilution

Predicted band size: 55 kDa

Observed band size: 55 kDa

false

Western blot - Anti-Pro Caspase-8 antibody [EPR162] (AB108333)
  • WB

Unknown

Western blot - Anti-Pro Caspase-8 antibody [EPR162] (AB108333)

All lanes:

Western blot - Anti-Pro Caspase-8 antibody [EPR162] (ab108333) at 1/1000 dilution

Lane 1:

Jurkat cell lysate at 10 µg

Lane 2:

IM9 cell lysate at 10 µg

Lane 3:

HepG2 cell lysate at 10 µg

Lane 4:

HL60 cell lysate at 10 µg

Predicted band size: 55 kDa

false

Western blot - Anti-Pro Caspase-8 antibody [EPR162] (AB108333)
  • WB

Unknown

Western blot - Anti-Pro Caspase-8 antibody [EPR162] (AB108333)

All lanes:

Western blot - Anti-Pro Caspase-8 antibody [EPR162] (ab108333) at 1/1000 dilution

Lane 1:

Jurkat cell lysate, treated with etoposide at 10 µg

Lane 2:

Jurkat cell lysate at 10 µg

Lane 3:

HeLa cell lysate, treated staurosporine at 10 µg

Lane 4:

HeLa cell lysate at 10 µg

Predicted band size: 55 kDa

false

Western blot - Anti-Pro Caspase-8 antibody [EPR162] (AB108333)
  • WB

Lab

Western blot - Anti-Pro Caspase-8 antibody [EPR162] (AB108333)

Lane 1 : Wild-type HAP1 cell lysate (20 μg)
Lane 2 : Pro Caspase-8 knockout HAP1 cell lysate (20 μg)
Lanes 1 and 2 : Merged signal (red and green).

Green - target observed at 55 kDa. Red - loading control, ab8245, observed at 37 kDa.

This western blot image is a comparison between ab108333 and a competitor's top cited mouse monoclonal antibody.

All lanes:

Western blot - Anti-Pro Caspase-8 antibody [EPR162] (ab108333)

Predicted band size: 55 kDa

false

Western blot - Anti-Pro Caspase-8 antibody [EPR162] (AB108333)
  • WB

Lab

Western blot - Anti-Pro Caspase-8 antibody [EPR162] (AB108333)

Lane 1 : Wild-type HAP1 cell lysate (20 μg)
Lane 2 : Pro Caspase-8 knockout HAP1 cell lysate (20 μg)
Lanes 1 and 2 : Merged signal (red and green). Green - ab108333 observed at 55 kDa. Red - loading control, ab8245, observed at 37 kDa.

ab108333 was shown to specifically react with Caspase-8 when Caspase-8 knockout samples were used. Wild-type and Pro Caspase-8 knockout samples were subjected to SDS-PAGE. ab108333 and ab8245 (loading control to GAPDH) were both diluted 1/1000 and incubated overnight at 4°C. Blots were developed with Goat anti-Rabbit IgG H&L (IRDye® 800CW) preadsorbed (ab216773) and Goat anti-Mouse IgG H&L (IRDye® 680RD) preadsorbed (ab216776) secondary antibodies at 1/10 000 dilution for 1 h at room temperature before imaging.

All lanes:

Western blot - Anti-Pro Caspase-8 antibody [EPR162] (ab108333)

Predicted band size: 55 kDa

false

Western blot - Anti-Pro Caspase-8 antibody [EPR162] (AB108333)
  • WB

Supplier Data

Western blot - Anti-Pro Caspase-8 antibody [EPR162] (AB108333)

Blocking and diluting buffer : 5% NFDM /TBST.

Exposure time :

Lane 1 & 2 : 7 seconds

Lane 3 & 4 : 3 seconds

Lanes 1 - 2:

Western blot - Anti-Pro Caspase-8 antibody [EPR162] (ab108333) at 1/1000 dilution

Lanes 3 - 4:

Western blot - Anti-Caspase-10/CASP-10 antibody [EPR10890] (<a href='/en-us/products/primary-antibodies/caspase-10-casp-10-antibody-epr10890-ab177475'>ab177475</a>) at 1/1000 dilution

Lanes 1 - 2:

His-tagged Human full-length Caspase 8 recombinant protein at 10 ng

Lanes 3 - 4:

His-tagged Human full-length Caspase 10 recombinant protein at 10 ng

Secondary

All lanes:

Western blot - Goat Anti-Rabbit IgG H&L (HRP) (<a href='/en-us/products/secondary-antibodies/goat-rabbit-igg-h-l-hrp-ab97051'>ab97051</a>) at 1/20000 dilution

Observed band size: 60-70 kDa

false

  • Carrier free

    Anti-Pro Caspase-8 antibody [EPR162] - BSA and Azide free

Key facts

Host species

Rabbit

Clonality

Monoclonal

Clone number

EPR162

Isotype

IgG

Carrier free

No

Reacts with

Mouse, Rat, Human

Applications

IHC-P, WB

applications

Immunogen

The exact immunogen used to generate this antibody is proprietary information.

Specificity

Theoretically, ab108333 should recognize p55/54, p43/41 and p18&#46; However, in our internal tests, it only recognized pro caspase 8&#46; We tested it side by side with ab32397&#46; Both antibodies are KO validated, and ab32397 recognizes pro-caspase 8 and cleavage caspase 8&#46;

Reactivity data

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Product details

Patented technology
Our RabMAb® technology is a patented hybridoma-based technology for making rabbit monoclonal antibodies. For details on our patents, please refer to RabMAb® patents.

What are the advantages of a recombinant monoclonal antibody?
This product is a recombinant monoclonal antibody, which offers several advantages including:

  • - High batch-to-batch consistency and reproducibility
  • - Improved sensitivity and specificity
  • - Long-term security of supply
  • - Animal-free batch production

For more information, read more on recombinant antibodies.

Properties and storage information

Form
Liquid
Purification technique
Affinity purification Protein A
Storage buffer
pH: 7.2 - 7.4 Preservative: 0.01% Sodium azide Constituents: PBS, 40% Glycerol (glycerin, glycerine), 0.05% BSA
Shipped at conditions
Blue Ice
Appropriate short-term storage conditions
+4°C
Appropriate long-term storage conditions
-20°C
Storage information
Stable for 12 months at -20°C

Supplementary information

This supplementary information is collated from multiple sources and compiled automatically.

Pro Caspase-8 also known as CASP8 is an inactive precursor of caspase-8 an important enzyme in the apoptosis and necroptosis pathways. This protein has a molecular mass of approximately 55 kDa. Caspase-8 expression occurs in various tissues with higher prevalence in immune cells including T lymphocytes and natural killer cells. Researchers often use techniques like western blot for caspase 8 detection particularly when analyzing its activation state.
Biological function summary

Pro caspase-8 plays a significant role in the regulation of apoptosis a programmed cell death process. It is initially synthesized in an inactive form and requires activation by cleavage to become functional. Pro caspase-8 integrates into the death-inducing signaling complex (DISC) following specific triggers such as Fas receptor engagement or TNF receptor activation indicating its role in response to external apoptotic signals. Its activation marks the initiation of a cascade that results in apoptosis ensuring controlled cell removal in multicellular organisms.

Pathways

Pro caspase-8 functions within the extrinsic apoptosis pathway where it serves as an initiator caspase. Alongside other proteins like Fas-associated protein with death domain (FADD) caspase-8 forms a critical part of the apoptotic signaling network. Another important pathway involving pro caspase-8 is necroptosis an alternative form of programmed cell death where it can inhibit the function of receptor-interacting protein kinase 1 (RIPK1) and RIPK3 under certain conditions. The regulation of these pathways highlights pro caspase-8's central role in determining cell fate under stress or damage.

Aberrations in pro caspase-8 activity link to various conditions such as cancer and autoimmune diseases. In cancers insufficient caspase-8 activation results in the evasion of apoptosis allowing uncontrolled cell proliferation. Meanwhile excessive or improper activation associates with autoimmune disorders where unregulated apoptosis leads to immune system imbalance. Pro caspase-8 connects with proteins like FLICE-like inhibitory protein (c-FLIP) in cancer where it influences the apoptotic threshold and contributes to the pathology.

Product protocols

For this product, it's our understanding that no specific protocols are required. You can visit:

Target data

Thiol protease that plays a key role in programmed cell death by acting as a molecular switch for apoptosis, necroptosis and pyroptosis, and is required to prevent tissue damage during embryonic development and adulthood (PubMed : 23516580, PubMed : 35338844, PubMed : 35446120, PubMed : 8681376, PubMed : 8681377, PubMed : 8962078, PubMed : 9006941, PubMed : 9184224). Initiator protease that induces extrinsic apoptosis by mediating cleavage and activation of effector caspases responsible for FAS/CD95-mediated and TNFRSF1A-induced cell death (PubMed : 23516580, PubMed : 35338844, PubMed : 35446120, PubMed : 8681376, PubMed : 8681377, PubMed : 8962078, PubMed : 9006941, PubMed : 9184224). Cleaves and activates effector caspases CASP3, CASP4, CASP6, CASP7, CASP9 and CASP10 (PubMed : 16916640, PubMed : 8962078, PubMed : 9006941). Binding to the adapter molecule FADD recruits it to either receptor FAS/TNFRSF6 or TNFRSF1A (PubMed : 8681376, PubMed : 8681377). The resulting aggregate called the death-inducing signaling complex (DISC) performs CASP8 proteolytic activation (PubMed : 9184224). The active dimeric enzyme is then liberated from the DISC and free to activate downstream apoptotic proteases (PubMed : 9184224). Proteolytic fragments of the N-terminal propeptide (termed CAP3, CAP5 and CAP6) are likely retained in the DISC (PubMed : 9184224). Also cleaves and activates BID, thereby promoting cytochrome C release from mitochrondria (By similarity). In addition to extrinsic apoptosis, also acts as a negative regulator of necroptosis : acts by cleaving RIPK1 at 'Asp-324', which is crucial to inhibit RIPK1 kinase activity, limiting TNF-induced apoptosis, necroptosis and inflammatory response (PubMed : 31827280, PubMed : 31827281). Also able to initiate pyroptosis by mediating cleavage and activation of gasdermin-C and -D (GSDMC and GSDMD, respectively) : gasdermin cleavage promotes release of the N-terminal moiety that binds to membranes and forms pores, triggering pyroptosis (PubMed : 32929201, PubMed : 34012073). Initiates pyroptosis following inactivation of MAP3K7/TAK1 (By similarity). Also acts as a regulator of innate immunity by mediating cleavage and inactivation of N4BP1 downstream of TLR3 or TLR4, thereby promoting cytokine production (By similarity). May participate in the Granzyme B (GZMB) cell death pathways (PubMed : 8755496). Cleaves PARP1 and PARP2 (PubMed : 8681376). Independent of its protease activity, promotes cell migration following phosphorylation at Tyr-380 (PubMed : 18216014, PubMed : 27109099).. Isoform 5. Lacks the catalytic site and may interfere with the pro-apoptotic activity of the complex.. Isoform 6. Lacks the catalytic site and may interfere with the pro-apoptotic activity of the complex.. Isoform 7. Lacks the catalytic site and may interfere with the pro-apoptotic activity of the complex (Probable). Acts as an inhibitor of the caspase cascade (PubMed : 12010809).. Isoform 8. Lacks the catalytic site and may interfere with the pro-apoptotic activity of the complex.
See full target information CASP8

Publications (53)

Recent publications for all applications. Explore the full list and refine your search

PLoS neglected tropical diseases 19:e0013443 PubMed40892762

2025

PANoptosis-mediated mechanisms underlying AST elevation in Talaromyces marneffei infection.

Applications

Unspecified application

Species

Unspecified reactive species

Wudi Wei,Baili Zhan,Lixiang Chen,Gang Wang,Xiuli Bao,Xiaotao He,Meng Zhang,Xiaoting Xie,Weihong Huang,Zhiman Xie,Junjun Jiang,Hao Liang,Li Ye

Cell death discovery 11:345 PubMed40715038

2025

RIPK1 S213E mutant suppresses RIPK1-dependent cell death by preventing interactions with RIPK3 and CASP8.

Applications

Unspecified application

Species

Unspecified reactive species

Ning Nan,Hong Hu,Xinxin Zhu,Jia Liu,Feiyang Yuan,Zhijie Li,Huayi Wang

Journal of environmental pathology, toxicology and oncology : official organ of the International Society for Environmental Toxicology and Cancer 44:31-39 PubMed40493899

2025

lncRNA PTCSC1 Promotes TRAIL Resistance through FOXO3a Pathway in HCT116 and SW480 Cells.

Applications

Unspecified application

Species

Unspecified reactive species

Changcheng Wang,Jia Guo,Zengan Wu

Frontiers in pharmacology 16:1557125 PubMed40183095

2025

Licorice attenuates cisplatin-induced hepatotoxicity by alleviating endoplasmic reticulum stress and apoptosis.

Applications

Unspecified application

Species

Unspecified reactive species

Jie Li,Xiujuan Yang,Xiaolong Lian,Baojian Li,Quhuan Ma,Lingling Yang,Guangmiao Gao,Yi Deng,Zhijun Yang

PloS one 20:e0313582 PubMed39820800

2025

Extraction of coronary thrombus-derived exosomes from patients with acute myocardial infarction and its effect on the function of adventitial cells.

Applications

Unspecified application

Species

Unspecified reactive species

Youfu He,Bo Wang,Yu Qian,Debin Liu,Qiang Wu

iScience 27:110382 PubMed39108730

2024

Bombinin-BO1 induces hepatocellular carcinoma cell-cycle arrest and apoptosis via the HSP90A-Cdc37-CDK1 axis.

Applications

Unspecified application

Species

Unspecified reactive species

Xiaoting Wang,Peiyu Tang,Yitong Gong,Hang Yao,Mingpeng Liang,Hongxia Qu,Xiao Han,Qiusheng Zheng,Zhen Shi,Defang Li,Qingling Jiang

Antioxidants (Basel, Switzerland) 13: PubMed39061948

2024

Antioxidant and Anti-Apoptotic Neuroprotective Effects of Cinnamon in Imiquimod-Induced Lupus.

Applications

Unspecified application

Species

Unspecified reactive species

Georges Maalouly,Christine-Marie-Anne Martin,Yara Baz,Youakim Saliba,Anna-Maria Baramili,Nassim Fares

Cell death & disease 15:163 PubMed38388468

2024

CHOP-mediated Gasdermin E expression promotes pyroptosis, inflammation, and mitochondrial damage in renal ischemia-reperfusion injury.

Applications

Unspecified application

Species

Unspecified reactive species

Nannan Ma,Hao Lu,Ning Li,Weijian Ni,Wenbo Zhang,Qiang Liu,Wenzheng Wu,Shichao Xia,Jiagen Wen,Tao Zhang

Cell reports 42:113581 PubMed38103201

2023

The tetrapeptide sequence of IL-18 and IL-1β regulates their recruitment and activation by inflammatory caspases.

Applications

Unspecified application

Species

Unspecified reactive species

Patrick M Exconde,Claudia Hernandez-Chavez,Christopher M Bourne,Rachel M Richards,Mark B Bray,Jan L Lopez,Tamanna Srivastava,Marisa S Egan,Jenna Zhang,William Yoo,Sunny Shin,Bohdana M Discher,Cornelius Y Taabazuing

Environmental toxicology 39:1031-1043 PubMed38069565

2023

USP14 promotes the proliferation of cervical cancer via upregulating β-catenin.

Applications

Unspecified application

Species

Unspecified reactive species

Han Song,Junjun Qiu,Keqin Hua
View all publications

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