CD183 (CXCR3) Monoclonal Antibody (CXCR3-173), PE-Cyanine7, eBioscience™

Product Specific Information

Description: The monoclonal antibody CXCR3-173 recognizes mouse CD183 also known as CXCR3. CD183 is a seven transmembrane G-protein liked chemokine receptor which binds three ligands; CXCL9 (mig), CXCL10 (IP-10)and CXCL11 (ITAC). CD183 as been shown to play a role in CD4 T cell responses to grafts. CXCR3 knockout mice have compromised allograft rejection responses. Expression is found on NK cells, a subset of T lymphocytes and a subset of Tregs as well as preferential expression on Th1-polarized cells.

The antibody CXCR3-173 has been shown to affect chemotaxis in response to ligand. The presence of ligand eliminates staining with the antibody. In vivo addition of the antibody delays cardiac and pancreatic islet allograft rejection.

Applications Reported: This CXCR3-173 antibody has been reported for use in flow cytometric analysis.

Applications Tested: This CXCR3-173 antibody has been tested by flow cytometric analysis of mouse splenocytes. This can be used at less than or equal to 0.5 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. It is recommended that the antibody be carefully titrated for optimal performance in the assay of interest.

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 # 00-8222-49) (100 µL of cell sample + 100 µL of IC Fixation Buffer) or 1-step Fix/Lyse Solution (Product # 00-5333-57) for up to 3 days in the dark at 4°C with minimal impact on brightness and FRET efficiency/compensation. Some generalizations regarding fluorophore performance after fixation can be made, but clone specific performance should be determined empirically.

Excitation: 488-561 nm; Emission: 775 nm; Laser: Blue Laser, Green Laser, Yellow-Green Laser.

Filtration: 0.2 µm post-manufacturing filtered.

Target Information

CD183, also known as CXCR3, is a seven-transmembrane G protein-coupled chemokine receptor that binds CXCL9 (Mig), CXCL10 (IP-10), and CXCL11 (I-TAC), which are part of the CXC chemokine subfamily. CD183 plays a crucial role in leukocyte traffic, influencing integrin activation, cytoskeletal changes, and chemotactic migration. It is expressed on NK cells, subsets of T lymphocytes, regulatory T cells (Tregs), and is preferentially found on Th1-polarized cells. CD183 is prominently expressed in effector/memory T cells and T cells in inflamed tissues, contributing to CD4 T cell responses to grafts, as evidenced by compromised allograft rejection in CXCR3 knockout mice. Chemokine binding induces rapid, short-lived cellular responses due to receptor internalization, with responsiveness restored after receptor recycling. Inhibition by Bordetella pertussis toxin suggests coupling with Gi subclass G proteins. The production of IP-10, Mig, and I-TAC in inflammatory lesions indicates CD183 role in recruiting inflammatory cells, making it a target for developing antagonists to treat inflammatory diseases. Multiple transcript variants encoding different isoforms of CD183 have been identified.