Invitrogen™ FOXP3 Monoclonal Antibody (236A/E7), eFluor™ 570, eBioscience™, Invitrogen™

Catalog No.	Quantity
50-112-3621	100 μg
50-112-3620	25 μg

Catalog No. 50-112-3621 Supplier Invitrogen™ Supplier No. 41477782

Description

Mouse Monoclonal Antibody

Description: The 236A/E7 antibody reacts with human Foxp3 protein also known as FORKHEAD BOX P3, SCURFIN, and JM2. 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 and flow cytometric analysis of freshly isolated human peripheral blood mononuclear cells (PBMCs) with the 236A/E7 antibody using the Foxp3/Transcription Factor Staining Buffer Set (cat. 00-5523) and protocol reveals staining of the CD4+CD25bright population. The epitope from 236A/E7 is different from that of PCH101 (cat. 72-5776). This antibody has also been shown to recognize rhesus macaque, sooty mangabey and cynomolgus macaque. Applications Reported: This 236A/E7 antibody has been reported for use in immunohistochemical staining of frozen tissue sections, immunohistochemical staining of formalin-fixed paraffin embedded tissue sections, and microscopy. Applications Tested: This 236A/E7 antibody has been tested by immunohistochemistry on formalin-fixed paraffin embedded human tissue using high or low pH antigen retrieval and can be used at less than or equal to 5 μg/mL.

FOXP3 (Forkhead box protein 3) is a member of the forkhead/winged-helix family of transcriptional regulators, highly conserved across mammals, and essential for normal immune homeostasis. FOXP3 is 381 amino acids long, stably and constitutively expressed at a high level in CD25 + CD4 positive regulatory T cells, a low level in CD4-positive/CD25-negative cells, and is absent in CD4-negative/CD8-positive T cells. FOXP3 may be a master regulatory gene, and a more specific marker of regulatory T cells. Defects in the gene encoding FOXP3 protein cause the scurfy phenotype in mice. In humans FOXP3 defects play a role in IPEX syndrome (immune dysfunction, polyendocrinopathy, enteropathy, X-linked syndrome), also known as X-linked autoimmunity-allergic dysregulation (XLAAD) syndrome. Transcript variants of FOXP3 encoding different isoforms have been identified. In human breast and colon cancer cells, expression of FOXP3 is regulated by p53 in response to the DNA damage.

Specifications

• Antigen: FOXP3
• Applications: Immunohistochemistry, Immunohistochemistry (Frozen), Immunohistochemistry (Paraffin), Immunocytochemistry, Multiplex Immunohistochemistry
• Classification: Monoclonal
• Clone: 236A/E7
• Concentration: 0.2 mg/mL
• Conjugate: eFluor 570
• Formulation: PBS with 0.09% sodium azide; pH 7.2
• Gene: Foxp3
• Gene Accession No.: Q9BZS1
• Gene Alias: AIID; DIETER; forkhead box P3; forkhead box protein P3; Forkhead box protein P3 41 kDa form; Forkhead box protein P3, C-terminally processed; forkhead/winged helix transcription factor 3; Foxp3; FOXP3delta7; immune dysregulation, polyendocrinopathy, enteropathy, X-linked; immunodeficiency, polyendocrinopathy, enteropathy, X-linked; IPEX; JM2; MGC141961; MGC141963; PIDX; regulatory protein Foxp3; RGD1562112; RP23-54C14.1; scurfin; scurfy; sf; XPID
• Gene Symbols: Foxp3
• Host Species: Mouse
• Purification Method: Affinity chromatography
• Quantity: 100 μg
• Regulatory Status: RUO
• Primary or Secondary: Primary
• Gene ID (Entrez): 50943, 574303
• Target Species: Human, Monkey, Rhesus Macaque
• Content And Storage: 4°C, store in dark, DO NOT FREEZE!
• Product Type: Antibody
• Form: Liquid
• Isotype: IgG1 κ

Frequently Asked Questions (FAQs)

I am unable to analyze my cells stained with eFluor Organic Dyes today. What options do I have?

Our options will depend on the samples you are analyzing.

If cell viability is not critical, you can store your stained samples at 4 degrees C or on ice overnight in the dark and analyze the following day.

For samples stained with eFluor organic fluorochromes, we recommend that cells be suspended in 100 uL of Flow Cytometry Staining Buffer (Cat. No. 00-4222) and 100 uL of eBioscience IC Fixation Buffer (Cat. No. 00-8222); samples can be incubated for up to 3 days at 4 degrees C in the dark. Alternatively, the 1-step Fix/Lyse Solution (Cat. No. 00-5333) can be used. This is a great option when working with whole blood but also works for other cell types.

Can the eFluor Organic fluorochromes be used for intracellular staining?

Yes, the eFluor Organic fluorochromes can be used for intracellular staining. The eFluor organic fluorochromes maintain bright signal and require minimal changes in compensation when fixed with eBioscience IC Fixation Buffer (Cat. No. 00-8222-49) and Permeabilization Buffer (Cat. No. 00-8333-56) or 1-step Fix/Lyse Solution (Cat. No. 00-5333-54, 00-5333-57) (as compared to live cells).

What buffers are compatible with the eFluor Organic fluorochromes and eVolve QDots?

The eFluor Organic fluorochromes and eVolve QDots can be used with flow staining buffers containing PBS and protein.

What is the difference between eFluor Organic Dyes and eVolve Qdots?

The eFluor Organic Dyes (eFluor 450, APC-eFluor 780, PerCP-eFluor 710, eFluor 710) are conventional fluorochromes. In contrast, the eVolve line of products are Quantum dots.

For Research Use Only.