Mouse Fas/TNFRSF6/CD95 ELISA Kit (Colorimetric)

Name: Mouse Fas/TNFRSF6/CD95 ELISA Kit (Colorimetric)
Brand: Novus Biologicals
SKU: KA2104
Price: 1039 USD
Availability: InStock

Novus Biologicals | Catalog # KA2104

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Product Specifications
Preparation & Storage
Background
Product Documents
Specific Notices
Research Areas

Key Product Details

Sample Type & Volume Required Per Well

Cell Culture Supernatant, Plasma (Citrate, EDTA, Heparin) and Serum (100 uL)

Sensitivity

<3 pg/mL

Assay Range

31.2 to 2000 pg/mL

View all Fas/TNFRSF6/CD95 ELISA Kits »

Product Specifications

Assay Type

Sandwich ELISA

Kit Type

ELISA Kit (Colorimetric)

Species

Mouse

Description

Quality control test: Standard Curve. Fas (Mouse) ELISA Kit is a sandwich enzyme immunoassay for the quantitative measurement of mouse Fas.

Preparation and Storage

Shipping

The product is shipped with polar packs. Upon receipt, store it immediately at the temperature recommended below.

Stability & Storage

Store at 4C short term. Aliquot and store at -20C long term. Avoid freeze-thaw cycles.

Background: Fas/TNFRSF6/CD95

Tumor Necrosis Family Receptor (TNFR) superfamily member Fas, also known as CD95, APO-1, and TNFRSF6, is a 40-50 kDa type I transmembrane glycoprotein that is traditionally considered a death receptor but also functions in non-apoptotic signaling (1-4). The human Fas/TNFRSF6/CD95 protein is encoded by the FAS gene which contains 9 exons and is located on chromosome 10 (10q23.3-4) (1,2). The mature canonical Fas/TNFRSF6 protein isoform is 335 aa in length, which includes the signal sequence, and has a theoretical molecular weight of 37.7 kDa (1,5). The protein contains an extracellular domain (ECD) consisting of three calcium rich domains (CRDs), a transmembrane domain (TM), and an intracellular domain (ICD) comprised of a calcium-inducing domain (CID) and characteristic dead domain (DD) (1,2,5,6). The Fas protein is expressed on the plasma membrane of activated lymphocytes as a homotrimer formed via CRD1 interactions (1,2,3,6). The DD is crucial for apoptotic signaling which is triggered by the Fas receptor binding its ligand, Fas ligand (FasL) (1,2,6,7). Upon Fas-FasL interaction, the DD recruits an adapter protein Fas-associated DD (FADD) and procaspase-8, generating the death-inducing signaling complex (DISC) (1-4,6-8). Formation of DISC activates caspase-8 and leads to cleavage of caspase-3, initiating a caspase-signaling cascade and cell death (1-4,6-8).

Fas-FasL-mediated apoptosis is important in immune homeostasis and removal of autoreactive T cells, autoreactive B cells, cytotoxic natural killer (NK) cells, and more (1,2,7). Dysfunction and mutations in the Fas receptor and the Fas-FasL signaling axis is associated a loss of apoptotic signaling and removal of autoreactive cells, which correlates with several autoimmune diseases including systemic lupus erythematosus (SLE), autoimmune lymphoproliferative syndrome (ALPS), and multiple sclerosis (MS) (1-4,6,7). In addition to apoptosis and cell death signaling, FasL/TNFRSF6/CD95 mediates other pathways involved in proliferation, survival, and differentiation (3,4,6,8). More specifically, Fas has been shown to activate the NF-kappaB pathway, driving innate immunity which includes IL-1beta production and functioning in host defense (3,4,6,8). Fas is also involved in adaptive immunity playing a role in co-stimulation of CD4+ and CD8+ T cell activation as well as precocious differentiation of naive cells to effector memory T cells (3,4,6). Differentiation into effector memory T cells shows protection against autoimmunity but also limits antitumor response to a form of cancer immunotherapy called adoptive cell transfer (ACT) (3,4). The non-apoptotic roles of the Fas/TNFRSF6/CD95 receptor highlight its potential as a target for both treating autoimmune diseases and in cancer immunotherapy (3,4).

References

1. Singh R, Pradhan V, Patwardhan M, Ghosh K. APO-1/Fas gene: Structural and functional characteristics in systemic lupus erythematosus and other autoimmune diseases. Indian J Hum Genet. 2009;15(3):98-102. https://doi.org/10.4103/0971-6866.60184

2. Magerus A, Bercher-Brayer C, Rieux-Laucat F. The genetic landscape of the FAS pathway deficiencies. Biomed J. 2021;44(4):388-399. https://doi.org/1010.1016/j.bj.2021.06.005

3. Guegan JP, Legembre P. Nonapoptotic functions of Fas/CD95 in the immune response. FEBS J. 2018;285(5):809-827. https://doi.org/10.1111/febs.14292

4. Yi F, Frazzette N, Cruz AC, Klebanoff CA, Siegel RM. Beyond Cell Death: New Functions for TNF Family Cytokines in Autoimmunity and Tumor Immunotherapy. Trends Mol Med. 2018;24(7):642-653. https://doi.org/10.1016/j.molmed.2018.05.004

5. Uniprot (P25445)

6. Guegan JP, Ginestier C, Charafe-Jauffret E, et al. CD95/Fas and metastatic disease: What does not kill you makes you stronger. Semin Cancer Biol. 2020;60:121-131. https://doi.org/10.1016/j.semcancer.2019.06.004

7. Volpe E, Sambucci M, Battistini L, Borsellino G. Fas-Fas Ligand: Checkpoint of T Cell Functions in Multiple Sclerosis. Front Immunol. 2016;7:382. Published 2016 Sep 27. https://doi.org/10.3389/fimmu.2016.00382

8. Cullen SP, Martin SJ. Fas and TRAIL 'death receptors' as initiators of inflammation: Implications for cancer. Semin Cell Dev Biol. 2015;39:26-34. https://doi.org/10.1016/j.semcdb.2015.01.012

Long Name

Fibroblast-associated

Alternate Names

Apo-1, APT1, CD95, TNFRSF6

Gene Symbol

FAS

Additional Fas/TNFRSF6/CD95 Products

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Product Specific Notices for Mouse Fas/TNFRSF6/CD95 ELISA Kit (Colorimetric)

This product is produced by and distributed for Abnova, a company based in Taiwan.

This product is for research use only and is not approved for use in humans or in clinical diagnosis. ELISA Kits are guaranteed for 6 months from date of receipt.