Date published: 2026-5-15

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FOXP3 Antibody (2A11G9): sc-53876

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Datasheets
  • FOXP3 Antibody (2A11G9) is a mouse monoclonal IgG2a κ FOXP3 antibody, cited in 40 publications, provided at 200 µg/ml
  • raised against purified truncated recombinant FoxP3 of human origin
  • FOXP3 Antibody (2A11G9) is recommended for detection of FOXP3 of mouse, rat and human origin by IP, IF, IHC(P), FCM and ELISA
  • FOXP3 Antibody (2A11G9) is available conjugated to agarose for IP; HRP for IHC(P) and ELISA; and to either phycoerythrin or FITC for IF, IHC(P) and FCM
  • also available conjugated to Alexa Fluor® 488, Alexa Fluor® 546, Alexa Fluor® 594 or Alexa Fluor® 647 for IF, IHC(P) and FCM, and for use with RGB fluorescent imaging systems, such as iBright™ FL1000, FluorChem™, Typhoon, Azure and other comparable systems
  • also available conjugated to Alexa Fluor® 680 or Alexa Fluor® 790 for IF and FCM; for use with Near-Infrared (NIR) detection systems, such as LI-COR®/Odyssey®, iBright™ FL1000, FluorChem™, Typhoon, Azure and other comparable systems
  • m-IgG Fc BP-HRP, m-IgG2a BP-HRP and m-IgGκ BP-HRP are the preferred secondary detection reagents for FOXP3 Antibody (2A11G9) for IHC(P) applications. These reagents are now offered in bundles with FOXP3 Antibody (2A11G9) (see ordering information below).
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FOXP3 Antibody (2A11G9) is a mouse monoclonal IgG2a kappa light chain antibody that detects the FOXP3 protein of mouse, rat, and human origin by immunoprecipitation (IP), immunofluorescence (IF), immunohistochemistry with paraffin-embedded sections (IHCP), flow cytometry (FCM), and enzyme-linked immunosorbent assay (ELISA). FOXP3 (2A11G9) antibody is available in both non-conjugated and various conjugated forms, including agarose, horseradish peroxidase (HRP), phycoerythrin (PE), fluorescein isothiocyanate (FITC), and multiple Alexa Fluor® conjugates. FOXP3, also known as scurfin, plays a critical role in maintaining immune homeostasis by acting as a transcriptional repressor. FOXP3 is essential for the development and function of regulatory T cells, which are crucial for preventing autoimmune diseases and maintaining tolerance to self-antigens. Mutations in the FOXP3 gene can lead to immune dysregulation, resulting in the severe X-linked disorder known as immune dysregulation, polyendocrinopathy, enteropathy, X-linked syndrome (IPEX). FOXP3′s ability to bind DNA through its forkhead domain allows regulation of genes involved in T cell activation and differentiation, highlighting FOXP3′s importance in the immune response. The gene encoding FOXP3 is located on the X chromosome at position Xp11.23, and FOXP3 expression is tightly regulated during T cell development, making FOXP3 a vital marker for identifying and studying regulatory T cells in various research and clinical applications.

For Research Use Only. Not Intended for Diagnostic or Therapeutic Use.

Alexa Fluor® is a trademark of Molecular Probes Inc., OR., USA

LI-COR® and Odyssey® are registered trademarks of LI-COR Biosciences

FOXP3 Antibody (2A11G9) References:

  1. The SPCH1 region on human 7q31: genomic characterization of the critical interval and localization of translocations associated with speech and language disorder.  |  Lai, CS., et al. 2000. Am J Hum Genet. 67: 357-68. PMID: 10880297
  2. The immune dysregulation, polyendocrinopathy, enteropathy, X-linked syndrome (IPEX) is caused by mutations of FOXP3.  |  Bennett, CL., et al. 2001. Nat Genet. 27: 20-1. PMID: 11137993
  3. Disruption of a new forkhead/winged-helix protein, scurfin, results in the fatal lymphoproliferative disorder of the scurfy mouse.  |  Brunkow, ME., et al. 2001. Nat Genet. 27: 68-73. PMID: 11138001
  4. Characterization of a new subfamily of winged-helix/forkhead (Fox) genes that are expressed in the lung and act as transcriptional repressors.  |  Shu, W., et al. 2001. J Biol Chem. 276: 27488-97. PMID: 11358962
  5. Scurfin (FOXP3) acts as a repressor of transcription and regulates T cell activation.  |  Schubert, LA., et al. 2001. J Biol Chem. 276: 37672-9. PMID: 11483607
  6. The FOXP1 winged helix transcription factor is a novel candidate tumor suppressor gene on chromosome 3p.  |  Banham, AH., et al. 2001. Cancer Res. 61: 8820-9. PMID: 11751404
  7. FOXP3 and its role in the immune system.  |  Kim, CH. 2009. Adv Exp Med Biol. 665: 17-29. PMID: 20429413
  8. Two FOXP3(+)CD4(+) T cell subpopulations distinctly control the prognosis of colorectal cancers.  |  Saito, T., et al. 2016. Nat Med. 22: 679-84. PMID: 27111280
  9. Human FOXP3+ Regulatory T Cell Heterogeneity and Function in Autoimmunity and Cancer.  |  Wing, JB., et al. 2019. Immunity. 50: 302-316. PMID: 30784578
  10. Human FOXP3 and tumour microenvironment.  |  Wang, J., et al. 2023. Immunology. 168: 248-255. PMID: 35689826
  11. Genetic tracing reveals transcription factor Foxp3-dependent and Foxp3-independent functionality of peripherally induced Treg cells.  |  van der Veeken, J., et al. 2022. Immunity. 55: 1173-1184.e7. PMID: 35700740
  12. FOXP3 recognizes microsatellites and bridges DNA through multimerization.  |  Zhang, W., et al. 2023. Nature. 624: 433-441. PMID: 38030726

Ordering Information

Product NameCatalog #UNITPriceQtyFAVORITES

FOXP3 Antibody (2A11G9)

sc-53876
200 µg/ml
$322.00

FOXP3 Antibody (2A11G9): m-IgG Fc BP-HRP Bundle

sc-528584
200 µg Ab; 10 µg BP
$361.00

FOXP3 Antibody (2A11G9): m-IgGκ BP-HRP Bundle

sc-520996
200 µg Ab, 40 µg BP
$361.00

FOXP3 Antibody (2A11G9): m-IgG2a BP-HRP Bundle

sc-547125
200 µg Ab; 10 µg BP
$361.00

FOXP3 Antibody (2A11G9) AC

sc-53876 AC
500 µg/ml, 25% agarose
$424.00

FOXP3 Antibody (2A11G9) HRP

sc-53876 HRP
200 µg/ml
$322.00

FOXP3 Antibody (2A11G9) FITC

sc-53876 FITC
200 µg/ml
$336.00

FOXP3 Antibody (2A11G9) PE

sc-53876 PE
200 µg/ml
$349.00

FOXP3 Antibody (2A11G9) Alexa Fluor® 488

sc-53876 AF488
200 µg/ml
$364.00

FOXP3 Antibody (2A11G9) Alexa Fluor® 546

sc-53876 AF546
200 µg/ml
$364.00

FOXP3 Antibody (2A11G9) Alexa Fluor® 594

sc-53876 AF594
200 µg/ml
$364.00

FOXP3 Antibody (2A11G9) Alexa Fluor® 647

sc-53876 AF647
200 µg/ml
$364.00

FOXP3 Antibody (2A11G9) Alexa Fluor® 680

sc-53876 AF680
200 µg/ml
$364.00

FOXP3 Antibody (2A11G9) Alexa Fluor® 790

sc-53876 AF790
200 µg/ml
$364.00

my customer order FOXP3 (2A11G9): sc-53876 conjugated with PE, she need to use it for flow cytometry application , her question what is the solvent should be use for reconstitution and the volume. what will be the vial concentration after reconstitution

Asked by: muneer
Thank you for your question . Please contact technical service by phone or email . (800)-457-3801 or scbt@scbt.com
Answered by: BlakeJ
Date published: 2022-11-14

请问这个抗体用来做细胞免疫荧光效果怎样

Asked by: JINGJINGJING123456789
Thank you for your question. It would be helpful if you could call us, allowing for a more interactive discussion of this and other related questions.
Answered by: Technical Support
Date published: 2021-07-23

What is the recommended dilution for Foxp3 anti mouse for IHC staining?

Asked by: Maysa
Thank you for your question. We recommend a starting dilution of 1:50 for this antibody for IHC staining. Here is a link to the preferred protocol: https://www.scbt.com/scbt/resources/protocols/immunoperoxidase-staining
Answered by: Tech Service
Date published: 2017-12-05

Why FOXP3 molecular weight is 48KDa and we see the band between 55 and 90KDa? Thank you

Asked by: mayo2n
Thank you for your question. Please contact our Technical Service Department by phone, e-mail or live chat. We are happy to provide you further information. The product is recommended for detection of FOXP3 of mouse, rat and human origin by WB, IP, IF, IHC(P), FCM and ELISA Santa Cruz Biotechnology does warranty our antibodies for one year from the date of purchase. If we are unable to successfully troubleshoot your application we will send you a replacement antibody free of charge.
Answered by: Technical Support Europe
Date published: 2021-10-15

Hi, I asked you before about the best ab to detect Foxp3 for human tissue by IHC-P and you advice me by sc53876. I would like to ask about sc-130666 and sc130666 PerCP, whats the different. If I would like to test sc130666 in IHC-P it will possible or not

Asked by: shaikhah
Thank you for your question. sc-130666 PerCP is conjugated to a fluorescent peridinin-chlorophyll protein complex (PerCP) and, therefore, a secondary detection reagent is not needed. Whereas sc-130666 is unconjugated so it would require use of a secondary detection reagent. sc-130666:FOXP3 (150D/E4) is recommended for use in IHC with paraffin embedded sections. For further information regarding collaboration, please contact our Technical Service Department and we would be happy to discuss this with you.
Answered by: Santa Cruz TS
Date published: 2017-03-24

if i would like to detect Foxp3 (mouse momclonal ) of human tissue by using IHC-P. which is the best one?please advice me

Asked by: shaikhah
Thank you for your question. This monoclonal antibody, sc-53876, would be the best choice for IHC(P) use on human tissues, so this is the one that I would recommend. If you have any further questions, please contact our Technical Service team.
Answered by: Tech Service
Date published: 2017-03-24

Which negative control should be used when using the FITC conjugated FOXP3 (2A11G9): sc-53876 in flow cytometry?

Asked by: jenni
Thank you for your inquiry. We recommend using isotype specific normal mouse IgG2a conjugated to FITC, sc-2856
Answered by: Technical Support 6
Date published: 2017-01-09
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Rated 4 out of 5 by from This antibody works well for IFC and IHQ(P)This antibody works well for immunofluorescence and immunohistochemistry (mouse lung tumor tissue)
Date published: 2023-06-20
Rated 3 out of 5 by from WB testI used this antibody to detect the expression of foxp3 protein in mouse intestinal tissue, but there are at least two molecular weight bands on the pvdf membrane. Which is the specific band?
Date published: 2021-10-15
Rated 5 out of 5 by from Great antibodyThis antibody is very good for western blot ,strong signal.
Date published: 2019-02-13
Rated 5 out of 5 by from Great antibody for WBI received a small sample and tried it for detection of FOXP3 in skeletal muscle samples (rat). It worked well in Western blots at 1:500 concentration, producing a strong signal at predicted MW.
Date published: 2018-03-08
Rated 1 out of 5 by from Several weak bandsI used this Ab on mouse lung homogenates at 1:1000 dilution. There were multiple bands, high background, and the bands were not strong. The datasheet says the band will be at 48kda, but the image shows it well about 55kda... I had two weak bands around that area.
Date published: 2018-03-01
Rated 5 out of 5 by from Quite good antibody1:500 diluted for wb of rat protein ,the band is strong and special
Date published: 2017-12-30
Rated 5 out of 5 by from great in WB & IHCtissue: spleen&liver WB, 1:1000 diluted in 5%BSA(TBST), incubate 4℃ overnight, and IgG-HRP, RT, 1hour. IHC- Aorta root 1:50 diluted is great
Date published: 2017-09-17
Rated 5 out of 5 by from 很好的抗体好的很,效果不错的。这的荧光效果非常的好. 并且是单克隆 抗体,建议大家 购买此货号的抗体来作免疫荧光实验的数据
Date published: 2017-07-28
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FOXP3 Antibody (2A11G9) is rated 4.1 out of 5 by 21.
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