FoxP3 Antibody (376209) [Phycoerythrin]

Human peripheral blood mononuclear cells (PBMCs) were stained with Mouse Anti-Human/Mouse/Rat FoxP3 PE-conjugated Monoclonal Antibody (Catalog # IC8970P) and Mouse Anti-Human CD4 Fluorescein-conjugated Monoclonal Antibody (Catalog # FAB3791F). Quadrant markers were set based on control antibody staining (Catalog # IC002P). To facilitate intracellular staining, cells were fixed and permeabilized with FlowX FoxP3 Fixation & Permeabilization Buffer Kit (Catalog # FC012). View our protocol for Staining Intracellular Molecules.

Human peripheral blood mononuclear cells (PBMCs) were stained with Mouse Anti-Human/Mouse/Rat FoxP3 PE-conjugated Monoclonal Antibody (Catalog # IC8970P) and Mouse Anti-Human CD25/IL-2 R alpha APC-conjugated Monoclonal Antibody (Catalog # FAB1020A). Quadrant markers were set based on control antibody staining (Catalog # IC002P). To facilitate intracellular staining, cells were fixed and permeabilized with FlowX FoxP3 Fixation & Permeabilization Buffer Kit (Catalog # FC012). View our protocol for Staining Intracellular Molecules.

Mouse splenocytes were stained with Mouse Anti-Human/Mouse/Rat FoxP3 PE-conjugated Monoclonal Antibody (Catalog # IC8970P) and Rat Anti-Mouse CD4 Alexa Fluor® 488-conjugated Monoclonal Antibody (Catalog # FAB554G). Quadrant markers were set based on control antibody staining (Catalog # IC002P). To facilitate intracellular staining, cells were fixed and permeabilized with FlowX FoxP3 Fixation & Permeabilization Buffer Kit (Catalog # FC012). View our protocol for Staining Intracellular Molecules.

Mouse splenocytes were stained with Mouse Anti-Human/Mouse/Rat FoxP3 PE-conjugated Monoclonal Antibody (Catalog # IC8970P) and Rat Anti-Mouse CD25/IL-2 R alpha APC-conjugated Monoclonal Antibody (Catalog # FAB2438A). Quadrant markers were set based on control antibody staining (Catalog # IC002P). To facilitate intracellular staining, cells were fixed and permeabilized with FlowX FoxP3 Fixation & Permeabilization Buffer Kit (Catalog # FC012). View our protocol for Staining Intracellular Molecules.

Rat splenocytes were stained with Mouse Anti-Human/Mouse/Rat FoxP3 PE-conjugated Monoclonal Antibody (Catalog # IC8970P) and Anti-Rat CD4 APC-conjugated Antibody. Quadrant markers were set based on control antibody staining (Catalog # IC002P). To facilitate intracellular staining, cells were fixed and permeabilized with FlowX FoxP3 Fixation & Permeabilization Buffer Kit (Catalog # FC012). View our protocol for Staining Intracellular Molecules.

• Reactivity: Hu, Mu, Rt
• Applications: Flow
• Clone: 376209
• Clonality: Monoclonal
• Host: Mouse
• Conjugate: Phycoerythrin

FoxP3 Antibody (376209) [Phycoerythrin] Summary

• Additional Information: Recombinant Monoclonal Antibody.
• Immunogen: E. coli-derived recombinant human FoxP3
  Gln105-Lys200
  Accession # Q9BZS1
• Specificity: Detects human FoxP3 in direct ELISAs. Detects human, mouse, and rat FoxP3 in flow cytometry.
• Source: N/A
• Isotype: IgG1
• Clonality: Monoclonal
• Host: Mouse
• Gene: FOXP3
• Purity Statement: Protein A or G purified from cell culture supernatant

Applications/Dilutions

• Dilutions:
  • Intracellular Staining by Flow Cytometry 10 uL/10^6 cells

Packaging, Storage & Formulations

• Storage: Protect from light. Do not freeze.
  • 12 months from date of receipt, 2 to 8 °C as supplied.
• Buffer: Supplied in a saline solution containing BSA and Sodium Azide.
• Preservative: Sodium Azide

Notes

This product is produced by and ships from R&D Systems, Inc., a Bio-Techne brand.

Alternate Names for FoxP3 Antibody (376209) [Phycoerythrin]

• AIID
• AIIDMGC141961
• DIETER
• forkhead box P3
• Forkhead Box Protein P3
• FoxP3
• FOXP3delta7
• immune dysregulation, polyendocrinopathy, enteropathy, X-linked
• Immunodeficiency, Polyendocrinopathy, Enteropathy, X-Linked
• IPEX
• JM2
• MGC141961
• MGC141963
• PIDX
• PIDXMGC141963
• SCURFIN
• XPID
• XPIDpolyendocrinopathy, enteropathy, X-linked

Background

Human FoxP3 is a 431 amino acid (aa), 47 kDa member of the P subclass of the FOX (forkhead box) family of transcription factors. It contains a Leu-rich repeat, a C2H2 zinc finger region, and a C-terminal FKH (fork head), DNA-binding domain. Three alternative splicing events have been described in human. The first shows a deletion of aa 72-106, a second exhibits a deletion of aa 246-272, and a third records a 60 aa insertion after Lys382. These events are likely not to be mutually exclusive. The first isoform (plus the full-length form) occurs in CD4⁺CD25⁺ T cells, while the less frequent second isoform appears in CD8⁺ Tregs. The mouse FoxP3 gene does not appear to be spliced. In addition, FoxP3 is found only in Tregs in mouse, while human FoxP3 appears in both Tregs and CD4⁺ and CD8⁺ conventional T cells.

Both mouse and human FoxP3 undergo proteolytic processing, after Arg51 and Arg417 in human, and at equivalent sites in mouse. Cleavage at the N-terminus generate a 41 kDa isoform, whereas C-terminal cleavage generates an isoform indistinguishable from the full-length isoform (47 kDa) in SDS-PAGE.

FoxP3 can act as a transcriptional repressor (for IL-2) via an interaction with HDAC7. By contrast, it can also act as a transcriptional activator (for GITRL and
CTLA-4) through an interaction with RUNX7. Notably, for both human and mouse, full-length 47 kDa FoxP3 will induce high levels of CTLA-4 on expressing cells. However, when the C-terminally truncated isoform (at Arg417) is considered, IL-10 promoting activity is enhanced in mouse, while suppressive activity is lost in human. Over aa 105-200, human FoxP3 shares 83% and 84% aa sequence identity with rat and mouse FoxP3, respectively.

Limitations

This product is for research use only and is not approved for use in humans or in clinical diagnosis. Primary Antibodies are guaranteed for 1 year from date of receipt.

Publications for FoxP3 Antibody (IC8970P)(1)

Publication using IC8970P

• Audu, CO;Wolf, SJ;Joshi, AD;Moon, JY;Melvin, WJ;Sharma, SB;Davis, FM;Obi, AT;Wasikowski, R;Tsoi, LC;Barrett, EC;Mangum, KD;Bauer, TM;Kunkel, SL;Moore, BB;Gallagher, KA; Histone demethylase JARID1C/KDM5C regulates Th17 cells by increasing IL-6 expression in diabetic plasmacytoid dendritic cells JCI insight 2024-06-24 [PMID: 38912581] (Flow Cytometry, Mouse)

FAQs for FoxP3 Antibody (IC8970P). (Showing 1 - 3 of 3 FAQ).

1. Does FoxP3 antibodies comes in lyophilized form?
   • FoxP3 antibodies, aka JM2 IPEX, and Scurfin antibodies, have the following products in lyophilized form: NBP1-18319, AF3240.
2. What the theoretical molecular weight for FoxP3 antibodies?
   • The TMW of FoxP3 antibodies is approximately 47 - 52 kDa.
3. What is the immunogen sequence of this FoxP3 antibody?
   • A sequence from Gln105 - Lys200.

Bioinformatics

• Gene Symbol: FOXP3
• Uniprot:
  • Q9BZS1()