CloneID: MARX10
Antigen Long Description: The original antibody was generated by immunizing B6.XCR1-lacZ mice every 3 weeks (4 times in succession) with 30 × 10^6 CD11c-enriched cells from C57BL/6 WT mice in combination with heat-inactivated B. pertussis.
Buffer Composition: PBS with 0.02% Proclin 300.
Available Custom Conjugation Options: AP, HRP, Fluorescein, APC, PE, Biotin Type A, Biotin Type B, Streptavidin, FluoroProbes 647H, Atto488, APC/Cy7, PE/Cy7
Uniprot Accession No.: Q9R0M1
Specificity Statement: This antibody binds mouse XCR1, which is a receptor for chemokines SCYC1 and SCYC2 and expressed on 80% of CD8+ the dendritic cells. It transduces a signal by increasing the intracellular calcium ions level. This antibody is also reported to cross-reacts with rat CXR1.
Application Notes (Clone): This antibody was used to stain cryostat sections (12 μm) of spleens from C57BL/6 WT and B6.XCR1-lacZ mice. It was found that this antibody could stain 20% of splenic conventional dendritic cells in C57BL/6 WT mice but did not give a signal in homozygous B6.XCR1-lacZ animals, which lack the XCR1 receptor. This antibody was also used to subsets of dendritic cells that express XCR1 using flow cytometry (Bachem et al., 2012; PMID: 22826713). Digoxigenin (Dig) coupled MARX10 was injected into C57BL/6 mice for in vivo labeling of XCR1+ dendritic cells. Recombinant ovalbumin (OVA) coupled MARX10 (MARX10-OVA) was used to measure antibody levels in C57BL/6 and homozygous B6.XCR1-lacZ mice serum following injection and for an in vivo cytotoxicity assay; MARX10-OVA was found to be highly effective in inducing CD8+ T cell cytotoxicity in vivo (Hartung et al., 2015; PMID: 25520399).
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