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Flow cytometric analysis of PE anti-mouse FR4 on mouse splenocytes. Splenocytes from BALB/c mice were stained simultaneously with FITC Rat Anti-Mouse CD25 (clone 7D4, Cat. No. 553072), APC Rat Anti-Mouse CD4 (clone RM4-5, Cat. No. 553051) and PE Rat anti-Mouse FR4. The left panel shows the gated lymphocyte populations used to generate the histograms in the right panel. The histogram shows expression of FR4 as CD4+CD25+ gated lymphocytes (solid line) and CD25- gated lymphocytes (dashed line). Flow cytometry was performed on a BD FACSCalibur™ System
BD Pharmingen™ PE Rat anti-Mouse FR4 (Folate receptor 4)
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Any use of products other than the permitted use without the express written authorization of Becton, Dickinson and Company is strictly prohibited.
Preparation and Storage
Product Notices
- Since applications vary, each investigator should titrate the reagent to obtain optimal results.
- 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.
- For fluorochrome spectra and suitable instrument settings, please refer to our Multicolor Flow Cytometry web page at www.bdbiosciences.com/colors.
- Please refer to www.bdbiosciences.com/us/s/resources for technical protocols.
関連製品
The monoclonal antibodies TH6 and 12A5 recognize Folate Receptor 4 (FR4), also known as the membrane folate-binding protein 3 (FBP3). FR4 is a heavily glycosylated 35 kD receptor expressed exclusively in lymphoid tissue and an isoform of the family of receptors that recognize the essential nutrient folic acid. Natural T regulatory cells constitutively express high levels of FR4. Differential expression of FR4 in combination with CD25 can distinguish four functionally distinct CD4+ T cell subpopulations; Natural Tregs, effector T cells, memory-like T cells and Naïve T cells. FR4hi CD25+ expressing CD4+ T cells also express high amounts of Foxp3, GITR and CTLA-4.
Monoclonal antibody TH6 and 12A5 stained CD25+CD4+ T cells at a higher level than other CD4+ or CD8+ T cells. In addition, in vivo injection of TH6 monoclonal antibody reduced the number of CD25+CD4+ T cells and CD25-CD4+ T cells in peripheral blood. Clone 12A5 has been demonstrated to work in western blot. Clones TH6 and 12A5 do not block one another in a flow cytometric assay.
Development References (3)
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Rothberg KG, Ying YS, Kolhouse JF, Kamen BA, Anderson RG. The glycophospholipid-linked folate receptor internalizes folate without entering the clathrin-coated pit endocytic pathway. J Cell Biol. 1990; 110(3):637-649. (Biology). View Reference
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Spiegelstein O, Eudy JD, Finnell RH. Identification of two putative novel folate receptor genes in humans and mouse. Gene. 2000; 258(1-2):117-125. (Biology). View Reference
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Yamaguchi T, Hirota K, Nagahama K, et al. Control of immune responses by antigen-specific regulatory T cells expressing the folate receptor.. Immunity. 2007; 27(1):145-59. (Biology). View Reference
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For Research Use Only. Not for use in diagnostic or therapeutic procedures.
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