CD294 (CRTH2) Monoclonal Antibody (BM16), PE-Cyanine5, eBioscience™, Invitrogen™

Rat Monoclonal Antibody

Supplier:  eBioscience 15294941

Catalog No. 15-294-941

Description

Description: This BM16 monoclonal antibody reacts with human CD294, which is also known as G protein-coupled receptor-44 (GPR-44) or chemoattractant receptor expressed on Th2 cells (CRTH2). CD294 is expressed on Th2 cells, some CD8+ cells, eosinophils, and basophils. Moreover, CD294 binds prostaglandin D2, which promotes leukocyte chemotaxis during allergic responses. CD294 has been reported to mediate prostaglandin D2-mediated suppression of apoptosis of Th2 cells by activating the PI3K pathway. Applications Reported: This BM16 antibody has been reported for use in flow cytometric analysis. Applications Tested: This BM16 antibody has been pre-diluted and tested by flow cytometric analysis of normal human peripheral blood cells. This may be used at 5 μL (0.25 μg) per test. A test is defined as the amount (μg) of antibody that will stain a cell sample in a final volume of 100 μL. Cell number should be determined empirically but can range from 10^5 to 10^8 cells/test. Light sensitivity: This tandem dye is sensitive to photo-induced oxidation. Please protect this vial and stained samples from light. Fixation: Samples can be stored in IC Fixation Buffer (Product No. 00-8222-49) (100 μL of cell sample + 100 μL of IC Fixation Buffer) or 1-step Fix/Lyse Solution (Product No. 00-5333-57) for up to 3 days in the dark at 4°C with minimal impact on brightness and FRET efficiency/compensation.

CRTH2 (GPR44) is a chemoattractant receptor-homologous molecule expressed on Th2 cells that is an identified receptor for the prostaglandin D2 (PGD2) and prostaglandin D receptor. CRTH2 is expressed on Th2 cells and eosinophils and mediates chemotaxis of these cells to PGD2 and is thus thought to be a key receptor mediating eosinophil and Th2 recruitment during allergic responses. However, CRTH2-null mice showed enhanced eosinophil recruitment into the lung consistent with observations that the CRTH2-null mice produced significantly higher amounts of interleukin-5 (IL-5) and IL-3. This suggests that CRTH2 plays a nonredundant role in restricting eosinophilia and allergic response in vivo. CRTH2 is also a novel member of the G protein-coupled leukocyte chemoattractant receptor family, which is selectively expressed in Th2 but not Th1 lineage cells. CRTH2 has been reported to be expressed in the central nervous system, peripheral tissues, and in blood cells, particularly activated T helper-2 cells. Two transcripts have been isolated: a 3.5 kb transcript expressed primarily in the thalamus, frontal cortex, pons and hippocampus; and a 3.4 kb transcript expressed in fetal liver, leukocytes and thymus. CRTH2 is selectively expressed in vivo in an activated state of Th2 cells including allergen-responsive Th2 cells, suggesting its pivotal roles in ongoing Th2-type immune reactions. At least two different isoforms of CRTH2 are known to exist. Single nucleotide polymorphisms in the 3' UTR of the CRTH2 gene have been associated with asthma susceptibility.

Specifications

• Antigen: CD294 (CRTH2)
• Classification: Monoclonal
• Concentration: 5 μL/Test
• Formulation: PBS with 0.2% BSA and 0.09% sodium azide; pH 7.2
• Gene Accession No.: Q9Y5Y4
• Gene Symbols: PTGDR2
• Purification Method: Affinity chromatography
• Regulatory Status: RUO
• Gene ID (Entrez): 11251
• Content And Storage: 4° C, store in dark, DO NOT FREEZE!
• Form: Liquid

• Applications: Flow Cytometry
• Clone: BM16
• Conjugate: PE-Cyanine5
• Gene: PTGDR2
• Gene Alias: CD294; chemoattractant receptor homologous molecule expressed on T helper type 2 cells; chemoattractant receptor-homologous molecule expressed on TH2 cells; CRTH2; DL1R; DP2; G protein-coupled receptor 44; Gpr44; G-protein coupled receptor 44; Grp45; MGC130436; PGD2 receptor; prostaglandin D2 receptor 2; prostaglandin D2 receptor CRTH2; Ptgdr2; putative G-protein coupled receptor 44
• Host Species: Rat
• Quantity: 25 Tests
• Primary or Secondary: Primary
• Target Species: Human
• Product Type: Antibody
• Isotype: IgG2a κ