Description
The 3G3 monoclonal antibody specifically binds to Forkhead box protein P3 (Foxp3) which is also known as Scurfin and JM2. Foxp3 is a 50-55 kDa protein that is encoded by Foxp3 (forkhead box P3) which belongs to the forkhead/winged helix family of transcriptional regulators. FoxP3 contains a single C2H2-type zinc-finger motif, a leucine-zipper region, and a C-terminal forkhead DNA-binding domain. Foxp3 is expressed by natural (nTreg) and induced/adaptive (iTreg) T regulatory cells. Foxp3 is a key transcription factor for Treg cell development and regulatory function. Treg cells play crucial roles in maintaining immune homeostasis by enforcing immunological tolerance to self-antigens and by suppressing excessive responses made by other immune cells to foreign antigens. Ectopic expression of Foxp3 in conventional T cells is sufficient to induce suppressive activity, repress the production of cytokines such as IL2 and IFN-γ, and upregulate Treg cell-associated molecules such as CTLA4/CD152 and GITR/TNFRSF18. A mutation in Foxp3 causes a lack of functional Tregs in Scurfy (sf) mice which develop a systemic disease state with autoimmune manifestations. The 3G3 antibody reportedly binds to the N-terminus of Foxp3.
BD® CompBeads can be used as surrogates to assess fluorescence spillover (Compensation). When fluorochrome conjugated antibodies are bound to CompBeads, they have spectral properties very similar to cells. However, for some fluorochromes there can be small differences in spectral emissions compared to cells, resulting in spillover values that differ when compared to biological controls. It is strongly recommended that when using a reagent for the first time, users compare the spillover on cells and CompBead to ensure that BD® CompBeads are appropriate for your specific cellular application.
Store undiluted at 4°C and protected from prolonged exposure to light. Do not freeze. The monoclonal antibody was purified from tissue culture supernatant or ascites by affinity chromatography. The antibody was conjugated to the dye under optimum conditions and unreacted dye was removed.
1. Please refer to www.bdbiosciences.com/us/s/resources for technical protocols.
2. Alexa Fluor® 488 fluorochrome emission is collected at the same instrument settings as for fluorescein isothiocyanate (FITC).
3. Caution: Sodium azide yields highly toxic hydrazoic acid under acidic conditions. Dilute azide compounds in running water before discarding to avoid accumulation of potentially explosive deposits in plumbing.
4. Since applications vary, each investigator should titrate the reagent to obtain optimal results.
5. For fluorochrome spectra and suitable instrument settings, please refer to our Multicolor Flow Cytometry web page at www.bdbiosciences.com/colors.
6. An isotype control should be used at the same concentration as the antibody of interest.
7. This product is provided under an intellectual property license between Life Technologies Corporation and BD Businesses. The purchase of this product conveys to the buyer the non-transferable right to use the purchased amount of the product and components of the product in research conducted by the buyer (whether the buyer is an academic or for-profit entity). The buyer cannot sell or otherwise transfer (a) this product (b) its components or (c) materials made using this product or its components to a third party or otherwise use this product or its components or materials made using this product or its components for Commercial Purposes. Commercial Purposes means any activity by a party for consideration and may include, but is not limited to: (1) use of the product or its components in manufacturing; (2) use of the product or its components to provide a service, information, or data; (3) use of the product or its components for therapeutic, diagnostic or prophylactic purposes; or (4) resale of the product or its components, whether or not such product or its components are resold for use in research. For information on purchasing a license to this product for any other use, contact Life Technologies Corporation, Cell Analysis Business Unit Business Development, 29851 Willow Creek Road, Eugene, OR 97402, USA, Tel: (541) 465-8300. Fax: (541) 335-0504.
8. Please refer to http://regdocs.bd.com to access safety data sheets (SDS).
9. Alexa Fluor™ is a trademark of Life Technologies Corporation.
