Detects a single clean band on human FOXP3 transfected 293 cells. When used in immunocytochemistry on acetone fixed FOXP protein transfected COS cells the antibody only detects FOXP3 and not FOXP1, FOXP2 or FOXP4.
The application notes include recommended starting dilutions; optimal dilutions/concentrations should be determined by the end user.
Use at an assay dependent dilution. Used at 2 µg/ml on human FOXP3 transfected COS cells (see Abreview for further information).
1/50. This clone has been tested against FOXP3 transfectants of COS-1 cells fixed with acetone and also works against formalin-fixed paraffin-embedded FOXP3 transfectants heat retrieved with pH9 Tris-EDTA buffer.
It did not show positive staining with cryostat or paraffin-embedded human tonsil.
Use at an assay dependent dilution.
Use a concentration of 1 µg/ml. Detects a band of approximately 48 kDa (predicted molecular weight: 48 kDa).Can be blocked with Human FOXP3 peptide (ab16809).
Probable transcription factor. Plays a critical role in the control of immune response.
Involvement in disease
Defects in FOXP3 are the cause of immunodeficiency polyendocrinopathy, enteropathy, X-linked syndrome (IPEX) [MIM:304790]; also known as X-linked autoimmunity-immunodeficiency syndrome. IPEX is characterized by neonatal onset insulin-dependent diabetes mellitus, infections, secretory diarrhea, trombocytopenia, anemia and eczema. It is usually lethal in infancy.
Strong staining can be seen on the FOXP3 transfectant, with very weak staining on the FOXP1 transfectant and no staining is seen with the other FOXP protein transfectants. This shows that the antibody is largely specific for FOXP3 when used with paraffin embedded cells.
These images were produced with neat supernatant produced with this clone (the stock of this antibody is purified from supernatant).
Western blot - Anti-FOXP3 antibody [mAbcam 450] (ab450)