CD141 Monoclonal Antibody (LS17-9), PE-Cyanine7, eBioscience™

Product Specific Information

Description: The monoclonal antibody LS17-9 recognizes mouse CD141 (Thrombomodulin, BDCA-3), a type I cell surface glycoprotein that binds to and allosterically activates thrombin. This complex cleaves protein C and the Thrombin Activatable Fibrinolysis Inhibitor (TAFI), initiating an important anticoagulant and antifibrinolytic pathway. Although expressed across many tissues and cell types, its highest expression has been reported on the lumenal surface of vascular endothelial cell. In the immune system the highest expression can be observed on monocytes and macrophages. Soluble CD141 is constitutively present in the serum at a very low level, and can be upregulated during inflammation. The anti-inflammatory activity of CD141 results from its ability to block the highly pro-inflammatory activity of thrombin. CD141 prevents chemotaxis and binding of granulocytes to activated endothelium, and inhibits activation of eosinophils and mast cells thereby reducing inflammation. Although human CD141 is commonly used as a marker of cross-presenting dendritic cells, mouse CD141 does not exhibit the same expression pattern.

Applications Reported: This LS17-9 antibody has been reported for use in flow cytometric analysis.

Applications Tested: This LS17-9 antibody has been tested by flow cytometric analysis of mouse resident peritoneal exudate cells. This can be used at less than or equal to 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. 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 # 00-822-49) (100 µL of cell sample + 100 µL of IC Fixation Buffer) or 1-step Fix/Lyse Solution (Product # 00-5333-54) 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

Thrombomodulin (TM) is also known as Fetomodulin (FM), endothelial anticoagulant protein, or glycoprotein P112. Thrombomodulin contains six repeated domains homologous with epidermal growth factor (EGF) and an amino terminal domain homologous to lectin-like protein. Through its accelerated activation of protein C, synthesis of TM is one of several mechanisms important in maintaining thrombo-resistance and thus reducing clot formation on the surface of the endothelial cells. Immunohistochemical staining of formalin-fixed tissue for TM has been used for the study of a variety of vascular tumors, meningiomas and choriocarcinomas.