Chemotaxis Induced by CXCL11/I‑TAC and Neutralization by Mouse CXCL11/I‑TAC Antibody. Recombinant Mouse|
CXCL11/I‑TAC (Catalog #
572-MC) chemoattracts the BaF3 mouse pro‑B cell line transfected with human CXCR3 in a dose-dependent manner (orange line). The amount of cells that migrated through to the lower chemotaxis chamber was measured by Resazurin (Catalog # AR002). Chemotaxis elicited by Recombinant Mouse CXCL11/
I‑TAC (200 ng/mL) is neutralized (green line) by increasing concentrations of Goat Anti-Mouse CXCL11/I-TAC Antigen Affinity-purified Polyclonal Antibody (Catalog # AF572). The ND50 is typically 2-12 µg/mL.
CXCL11 (also known as I-TAC, SCYB9B, H174, IP-9, and beta -R1) is a member within the non-ELR CXC chemokine subgroup and has been designated CXCL11. CXCL11, together with MIG and IP-10, constitute a subset of chemokines that are ligands for CXCR3, a chemokine receptor that is primarily expressed on activated Th1 cells and NK cells. The three chemokines were also reported to act as antagonists for CCR3, a chemokine receptor that is preferentially expressed on activated Th2 cells. Mouse CXCL11 cDNA encodes a 100 amino acid (aa) residue precursor protein with a putative 21 aa residue signal peptide that is cleaved to yield a 79 aa residue mature protein. Mature mouse and human CXCL11 share 71% aa sequence identity. Mouse CXCL11 also shares 36% and 29% aa sequence identity with mouse IP-10 (CRG-2) and mouse MIG, respectively. The gene for mouse CXCL11 has been mapped to chromosome 5, in close proximity to the IP-10 and MIG genes. Mouse CXCL11 is induced in multiple tissues during endoxemia, with the greatest expression in lung, heart, small intestine, and kidney. The endotoxemia-induced mouse CXCL11 expression is strongly attenuated by treatment with glucocorticoid.
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