human Foxp3 (Foxp-3, Forkhead box P3) antibody: purified antibody

Contents: Affinity Purified anti-human Foxp3
Catalog Number: 14-4776
Formulation: Phosphate buffer pH 7.2,
150 mM NaCl, 0.09% NaN₃
Storage Conditions: Store at 4°C.
Avoid repeated freeze/thaw cycles.
Clone: PCH101
Isotype: Rat IgG2a, κ

Prices for This Product*
Cat. No.	Size	Price	Qty	Action
14-4776-80	25 ug	$140
14-4776-82	100 ug	$275

*International customers: Please contact your distributor for region specific pricing.

Immunoblotting of PBMC cell lysates from 10⁶ cells (Lane A), BALB/c splenocyte cell lysates from 10⁶ cells (Lane B), or recombinant human FoxP3 fusion protein (Lane C); probed with 2 μg/mL of purified anti-human Foxp3 (PCH101). Bands are revealed with HRP anti-rat IgG. Cell lysates were prepared by direct sonication in sample loading buffer.

Available Formats of This Product
Cat. No.	Format	Excite (nm)	Emit (nm)	Reported Applications
11-4776	FITC anti-human Foxp3	488	518	IC Flow IH/F IHC(Paraffin)
12-4776	PE anti-human Foxp3	488	575	IC Flow
13-4776	Biotin anti-human Foxp3	N/A	N/A	IC Flow IH/F IHC(Paraffin) WB
14-4776	Affinity Purified anti-human Foxp3	N/A	N/A	IH/F IHC(Paraffin) WB
15-4776	Phycoerythrin-Cy5 (PE-Cy5) anti-human Foxp3	488	670	IC Flow
17-4776	APC anti-human Foxp3	633	660	IC Flow
45-4776	PerCP-Cy5.5 anti-human Foxp3	488	690	IC Flow
51-4776	Alexa Fluor® 647 anti-human Foxp3	633	668	IC Flow
53-4776	Alexa Fluor® 488 anti-human Foxp3	488	519	IC Flow
56-4776	Alexa Fluor® 700 anti-human Foxp3 (APC-Cy5.5 Equivalent)	633	723	IC Flow
57-4776	Pacific Blue® anti-human Foxp3	402	421	IC Flow

Questions? Please consult our answers to frequently asked questions at http://www.ebioscience.com/faq.

Description

eBioscience offers a panel of monoclonal antibodies to different epitopes of human Foxp3, providing useful tools for investigating the complete expression pattern of Foxp3 at the protein level, and discerning the precise subsets of Foxp3⁺ cells. Please contact tech@ebioscience.com or 888.810.6168 for any additional assistance.

The PCH101 antibody reacts with the amino terminus of human foxp3 protein 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 was identified as the gene defective in ‘scurfy’ (sf) mice. Constitutive high expression of Foxp3 mRNA has been shown in CD4+CD25+ regulatory T cells (Treg cells), and ectopic expression of foxp3 in CD4+CD25- cells imparts a Treg phenotype in these cells.

Intracellular staining of human peripheral blood mononuclear cells (PBMCs) with PCH101 antibody using the anti-human Foxp3 Staining Set and protocol reveals approximately 0.5-4% of lymphocytes staining, with the majority of staining occurring in the CD25^bright population. This is subject to donor variability.

PCH101 crossreacts with rhesus, chimpanzee and cynomolgus. We recommend the use of CD4 (OKT4, cat. 11-0048, or RPA-T4, cat. 11-0049, depending on the species) and CD25 (BC96, cat. 17-0259). Please refer to our crossreactivity table for more information.

Applications Reported

For research use only, not for diagnostic or therapeutic use. This PCH101 antibody has been reported for use in immunoblotting (WB) and immunohistology on frozen and paraffin-embedded tissue sections. Use of the purified format is not recommended for intracellular staining for flow cytometric analysis. For additional information on IHC, please visit the Foxp3 FAQs http://www.ebioscience.com/ebioscience/Foxp3FAQs.htm

Applications Tested

This PCH101 antibody has been tested by immunoblotting (WB) (1-5µg/ml) of normal human peripheral blood leukocytes.

References

Ahmadzadeh M, Rosenberg SA. IL-2 Administration Increases CD4+CD25hiFoxp3+ Regulatory T Cells in Cancer Patients. Blood. 2005 Nov 22; [Epub ahead of print] (PCH101, intracellular flow, PubMed)

Crellin NK, Garcia RV, Hadisfar O, Allan SE, Steiner TS, Levings MK. 2005. Human CD4+ T Cells Express TLR5 and Its Ligand Flagellin Enhances the Suppressive Capacity and Expression of FOXP3 in CD4+CD25+ T Regulatory Cells. J Immunol. 2005 Dec 15;175(12):8051-9. (PCH101, intracellular flow, PubMed)

Hartwig UF, Nonn M, Khan S, Meyer RG, Huber C, Herr W. Depletion of alloreactive T cells via CD69: implications on antiviral, antileukemic and immunoregulatory T lymphocytes. Bone Marrow Transplant. 2005 Dec 5; [Epub ahead of print] (Intracellular staining for flow cytometry using PCH101, PubMed)

Lim, H.W., P. Hillsamer, A.H. Banham, and C.H. Kim. 2005. Cutting Edge: Direct Suppression of B cells by CD4+CD25+ Regulatory T cells. J. Immunol. 175: 4180-4183. (PCH101, intracellular flow, PubMed)

Manigold T, Shin EC, Mizukoshi E, Mihalik K, Murthy KK, Rice CM, Piccirillo CA, Rehermann B. Foxp3+CD4+CD25+ T cells control virus-specific memory T cells in chimpanzees recovered from Hepatitis C. Blood. 2006 Feb 14; [Epub ahead of print] (PCH101 in chimpanzee, PubMed)

Hori S, Nomura T, Sakaguchi S. 2003. Control of regulatory T cell development by the transcription factor Foxp3. Science. 299(5609):1057-61.

Manavalan JS, Kim-Schulze S, Scotto L, Naiyer AJ, Vlad G, Colombo PC, Marboe C, Mancini D, Cortesini R, Suciu-Foca N.2004. Alloantigen specific CD8+CD28- FOXP3+ T suppressor cells induce ILT3+ ILT4+ tolerogenic endothelial cells, inhibiting alloreactivity. Int Immunol. 16(8):1055-68.

Takahata Y, Nomura A, Takada H, Ohga S, Furuno K, Hikino S, Nakayama H, Sakaguchi S, Hara T. 2004. CD25+CD4+ T cells in human cord blood: an immunoregulatory subset with naive phenotype and specific expression of forkhead box p3 (Foxp3) gene. Exp Hematol. 32(7):622-9.

Sakaguchi S. 2003. The origin of FOXP3-expressing CD4+ regulatory T cells: thymus or periphery. J Clin Invest. 112(9):1310-2.

Clark, Rachael, Kupper, Thomas S. (2007) “IL-15 and dermal fibroblasts induce proliferation of natural regulatory cells isolated from human skin” Blood 109:194-202

Epple, Hans-Jorg et al (2006) “Mucosal but not peripheral FOXP3 regulatory T cells are highly increased in untreated HIV infection and normalize after suppressive HAART” Blood 108: 3072-3078

Clark RA and Kupper TS. 2007. IL-15 and dermal fibroblasts induce proliferation of natural regulatory T cells isolated from human skin. Blood. 109(1):194-202. (PCH101, IHC frozen, PubMed)

Epple HJ, Loddenkemper C, et al. 2006. Mucosal but not peripheral FOXP3+ regulatory T cells are highly increased in untreated HIV infection and normalize after suppressive HAART. Blood. 108(9):3072-8. (PCH101, IHC paraffin, PubMed)

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