Fas recombinant antibody

Anti-Fas [R-125224]

Cat. Num. AAA488361

• Gene Names: FAS; APT1; CD95; FAS1; APO-1; FASTM; ALPS1A; TNFRSF6
• Reactivity: Human
• Applications: ELISA, Flow Cytometry, Functional Assay
• Purity: Protein A Affinity Purified
• Synonyms: Fas; Monoclonal Recombinant Antibody; Anti-Fas [R-125224]; h-HFE7A; Tumor necrosis factor receptor superfamily member 6; CD95; CD-95; Apo-1; Apo 1; Apo-1 antigen; Apoptosis-mediating surface antigen FAS; FASLG receptor; Fas recombinant antibody

• Reactivity: Human
• Clonality: Monoclonal
• Isotype: Human IgG1, Kappa
• Clone Number: R-125224
• Specificity: R-125224 binds to the extracellular portion of human Fas at an eptiope consisting of the sequence RTQNTKCRCK (aa 105-114) (pmid: 11754745). Fas is a type I membrane protein which belongs to the tumor necrosis factor (TNF) receptor/nerve growth factor (NGF) receptor superfamily. It is able to transduce apoptotic signals into the cell when bound by its ligand FasL (Fas ligand), which is primarily expressed in activated T lymphoid-myeloid lineage cells, in the eye, in reproductive organs and in some tumors. The Fas-FasL system is known to play an important role in maintaining the immune system as mice with Fas-defective lymphoproliferation (lpr) and FasL-defective generalized lymphoproliferative disease (gld) mutations develop massive lymphadenopathy and autoimmune diseases.
• Purity/Purification: Protein A Affinity Purified
• Concentration: 1 mg/ml (varies by lot)
• Sequence Length: 335

• Applicable Applications for Fas recombinant antibody: Activate, Imaging, ELISA (EIA), Flow Cytometry (FC/FACS)
• Application Notes: R-125224 shows the same binding affinity and the same ability to induce apoptosis in WR19L12a cells that express human Fas as the parental murine HFE7A antibody. R-125224 selectively induces apoptosis in type I activated lymphocytes but not in type II cells. R-125224 is able to induce apoptosis in the human lymphoid cell lines H9 and SKW6.4, as well as activated human lymphocytes, when cross-linked with anti-hIgG secondary antibodies. The antibody is unable to induce apoptosis in HPB-ALL cells, Jurkat cells or human hepatocytes. R-125224 has been used in vivo where it has been shown to greatly reduce the number of activated human human CD3+ Fas+ T cells in a SCID mouse model possessing a functional human immune system. Fas antigen tissue distribution in cynomolgus monkeys with collagen-induced arthritis at the arm joint (CIA monkeys) has been studied using [125I]-Labeled R-125224. High radioactivity in the bone marrow, thymus, lungs, liver, adrenals, spleen, ovaries, axillary lymph node and mesenteric lymph node compared to the radioactivity in the plasma was observed, which correlates with Fas expression. Fas can also be detected by R-125224 by ELISA.
• Immunogen: R-125224 is generated by the humanization of the murine HFE7A anti-Fas antibody by grafting the CDR regions to the framework regions of the human 8E10 antibody and substituting key framework residues from the murine antibody into the 8E10 sequence. The original HFE7A was derived from a hybridoma cell line generated by the fusion of NS1 myeloma cells with splenocytes from Fasdeficient mice which had been immunized with partially purified recombinant human Fas-AIC2A chimera protein consisting of the extracellular region of human Fas antigen (aa-16 to 150) and the extracellular region of the murine IL-3 receptor AIC2 (aa 3-423). The HFE7A hybridoma was selected after screening by flow cytometry for the production of antibodies with the ability to bind to the WR19L12a transformed murine T cell lymphoma cell line expressing human Fas or the L5178YA1 cell line expressing murine Fas, but not to the parental WR19L or L5178Y cells.
• Buffer Composition: PBS only with 0.02% Proclin 300.
• Labeled Substance: None
• Preparation and Storage: Store at 4 degree C for up to 3 months. For longer storage, aliquot and store at -20 degree C.

Related Product Information for Fas recombinant antibody

Recombinant monoclonal antibody to Fas. Manufactured using a proprietary Recombinant Platform with variable regions (i.e. specificity) from the hybridoma R-125224.
R-125224 is generated by the humanization of the murine HFE7A anti-Fas antibody by grafting the CDR regions to the framework regions of the human 8E10 antibody and substituting key framework residues from the murine antibody into the 8E10 sequence. The original HFE7A was derived from a hybridoma cell line generated by the fusion of NS1 myeloma cells with splenocytes from Fas-deficient mice which had been immunized with partially purified recombinant human Fas-AIC2A chimera protein consisting of the extracellular region of human Fas antigen (aa-16 to 150) and the extracellular region of the murine IL-3 receptor AIC2 (aa 3-423). The HFE7A hybridoma was selected after screening by flow cytometry for the production of antibodies with the ability to bind to the WR19L12a transformed murine T cell lymphoma cell line expressing human Fas or the L5178YA1 cell line expressing murine Fas, but not to the parental WR19L or L5178Y cells.

Product Categories/Family for Fas recombinant antibody

RA; Oncology; Cancer; Biosimilar

References

Haruyama et al. Humanization of the Mouse Anti-Fas Antibody HFE7A and Crystal Structure of the Humanized HFE7A Fab Fragment Biol. Pharm. Bull. 25(12) 1537—1545 (2002) PMID:12499636

NCBI and Uniprot Product Information

• NCBI GI #: 4507583
• NCBI GeneID: 355
• NCBI Accession #: NP_000034.1
• NCBI GenBank Nucleotide #: NM_000043.6
• UniProt Accession #: P25445; Q14292; Q14293; Q14294; Q14295; Q16652; Q5T9P1; Q5T9P2; Q5T9P3; Q6SSE9; A9UJX4; B6VNV4
• Molecular Weight: 11,435 Da
• NCBI Official Full Name: tumor necrosis factor receptor superfamily member 6 isoform 1
• NCBI Official Synonym Full Names: Fas cell surface death receptor
• NCBI Official Symbol: FAS
• NCBI Official Synonym Symbols: APT1; CD95; FAS1; APO-1; FASTM; ALPS1A; TNFRSF6
• NCBI Protein Information: tumor necrosis factor receptor superfamily member 6
• UniProt Protein Name: Tumor necrosis factor receptor superfamily member 6
• Protein Family: Fascin
• UniProt Gene Name: FAS
• UniProt Synonym Gene Names: APT1; FAS1; TNFRSF6

NCBI Description

The protein encoded by this gene is a member of the TNF-receptor superfamily. This receptor contains a death domain. It has been shown to play a central role in the physiological regulation of programmed cell death, and has been implicated in the pathogenesis of various malignancies and diseases of the immune system. The interaction of this receptor with its ligand allows the formation of a death-inducing signaling complex that includes Fas-associated death domain protein (FADD), caspase 8, and caspase 10. The autoproteolytic processing of the caspases in the complex triggers a downstream caspase cascade, and leads to apoptosis. This receptor has been also shown to activate NF-kappaB, MAPK3/ERK1, and MAPK8/JNK, and is found to be involved in transducing the proliferating signals in normal diploid fibroblast and T cells. Several alternatively spliced transcript variants have been described, some of which are candidates for nonsense-mediated mRNA decay (NMD). The isoforms lacking the transmembrane domain may negatively regulate the apoptosis mediated by the full length isoform. [provided by RefSeq, Mar 2011]

Uniprot Description

Receptor for TNFSF6/FASLG. The adapter molecule FADD recruits caspase-8 to the activated receptor. The resulting death-inducing signaling complex (DISC) performs caspase-8 proteolytic activation which initiates the subsequent cascade of caspases (aspartate-specific cysteine proteases) mediating apoptosis. FAS-mediated apoptosis may have a role in the induction of peripheral tolerance, in the antigen-stimulated suicide of mature T-cells, or both. The secreted isoforms 2 to 6 block apoptosis (in vitro).