Description
The 9E9 monoclonal antibody specifically binds to Fc receptor, IgG, low affinity IV (FcγRIV), which is also known as CD16-2. FcγRIV is encoded by Fcgr4 and belongs to the family of receptors for the Fc region of IgG (FcγRs), which also includes FcγRI (CD64), FcγRII (CD32), and FcγRIII (CD16) within the Ig superfamily. FcγRIV is expressed on monocytes, macrophages, dendritic cells, and neutrophils. FcγRIV, which serves as a ligand-biding subunit, requires the common Fcγ chain for expression and signaling. This complex serves as a cell activating receptor when bound by IgG2a or IgG2b. FcγRIV plays various roles in inflammation including neutrophil trafficking and mast cell degranulation. FcγRIV can also function as a low-affinity IgE receptor and promote IgE-induced inflammation. The 9E9 antibody can reportedly inhibit cellular FcγRIV (CD16-2) function and block non-antigen-specific binding of immune complexes to improve the quality of immunological assays.
BD® CompBeads can be used as surrogates to assess fluorescence spillover (compensation). When fluorochrome conjugated antibodies are bound to BD® 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 BD® CompBeads 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 that minimize unconjugated dye and antibody.
1. Researchers should determine the optimal concentration of this reagent for their individual applications.
2. The production process underwent stringent testing and validation to assure that it generates a high-quality conjugate with consistent performance and specific binding activity. However, verification testing has not been performed on all conjugate lots.
3. Please refer to www.bdbiosciences.com/us/s/resources for technical protocols.
4. An isotype control should be used at the same concentration as the antibody of interest.
5. 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.
6. CF™ is a trademark of Biotium, Inc.
7. Please refer to http://regdocs.bd.com to access safety data sheets (SDS).
8. For fluorochrome spectra and suitable instrument settings, please refer to our Multicolor Flow Cytometry web page at www.bdbiosciences.com/colors.
9. Since applications vary, each investigator should titrate the reagent to obtain optimal results.
10. Although hamster immunoglobulin isotypes have not been well defined, BD Biosciences Pharmingen has grouped Armenian and Syrian hamster IgG monoclonal antibodies according to their reactivity with a panel of mouse anti-hamster IgG mAbs. A table of the hamster IgG groups, Reactivity of Mouse Anti-Hamster Ig mAbs, may be viewed at http://www.bdbiosciences.com/documents/hamster_chart_11x17.pdf.
