Invitrogen™ Anti-Mouse/Rat Foxp3 FITC Staining Set FJK-16s
FITC staining kit for mouse and rat Fox3p
The supplier does not provide quotations for this product through SelectScience. You can search for similar products in our Product Directory.
The FJK-16s antibody reacts with mouse, rat, dog, porcine, and bovine Foxp3 also known as FORKHEAD BOX P3, SCURFIN, and JM2; cross reactivity of this antibody to other proteins has not been determined. Foxp3, a 49-55 kDa protein, is a member of the forkhead/winged-helix family of transcriptional regulators, and is defective in ‘scurfy’ (sf) mice. CD4+CD25+ regulatory T cells constitutively express Foxp3 mRNA, and ectopic expression of Foxp3 in CD4+CD25- cells imparts a Treg phenotype in these cells.
Immunoblot results using the FJK-16s antibody mapped the epitope to amino acids 75-125 of the mouse Foxp3 protein. In the human, this region has been shown to be alternatively spliced at the mRNA level. Both the alternatively-spliced and non-spliced isoforms are present in the CD4+CD25+ subset of lymphocytes. Preliminary RT-PCR experiments have not revealed this alternatively-spliced isoform in mouse splenocytes, suggesting different gene regulation in the mouse and human.
Intracellular staining of mouse splenocytes with FJK-16s using the PE anti-mouse/rat Foxp3 Staining Set reveals approximately 2% of total cells in the C57Bl/6 strain and approximately 3-5% in the BALB/c mouse strain. Multicolor flow cytometric analysis demonstrates approximately 90% of the CD4+CD25+ cells and 4% of the CD4+CD25- cells staining with FJK-16s. B220+, CD11b+, CD11c+, and Ly6G/Gr-1+ cells do not show significant co-staining with FJK-16s.
