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Pacific Blue™ anti-human CD4 Antibody

Pricing & Availability
Clone
RPA-T4 (See other available formats)
Regulatory Status
RUO
Workshop
IV T114
Other Names
T4
Isotype
Mouse IgG1, κ
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Product Citations
publications
RPA-T4_Blue_022008
Human peripheral blood lymphocytes stained with RPA-T4 Pacific Blue™
  • RPA-T4_Blue_022008
    Human peripheral blood lymphocytes stained with RPA-T4 Pacific Blue™
Compare all formats See Pacific Blue™ spectral data
Cat # Size Price Quantity Check Availability Save
300524 25 µg £77
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300521 100 µg £184
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Description

CD4, also known as T4, is a 55 kD single-chain type I transmembrane glycoprotein expressed on most thymocytes, a subset of T cells, and monocytes/macrophages. CD4, a member of the Ig superfamily, recognizes antigens associated with MHC class II molecules, and participates in cell-cell interactions, thymic differentiation, and signal transduction. CD4 acts as a primary receptor for HIV, binding to HIV gp120. CD4 has also been shown to interact with IL-16.

Product Details
Technical Data Sheet (pdf)

Product Details

Verified Reactivity
Human
Reported Reactivity
Chimpanzee
Antibody Type
Monoclonal
Host Species
Mouse
Formulation
Phosphate-buffered solution, pH 7.2, containing 0.09% sodium azide.
Preparation
The antibody was purified by affinity chromatography, and conjugated with Pacific Blue™ under optimal conditions.
Concentration
0.5 mg/ml
Storage & Handling
The CD4 antibody solution should be stored undiluted between 2°C and 8°C, and protected from prolonged exposure to light. Do not freeze.
Application

FC - Quality tested
Recommended Usage

Each lot of this antibody is quality control tested by immunofluorescent staining with flow cytometric analysis. The suggested use of this reagent is ≤ 2.0 µg per 106 cells in 100 µl volume or 100 µl of whole blood. It is highly recommended that the reagent be titrated for optimal performance for each application.

* Pacific Blue™ has a maximum emission of 455 nm when it is excited at 405 nm. Prior to using Pacific Blue™ conjugate for flow cytometric analysis, please verify your flow cytometer's capability of exciting and detecting the fluorochrome.


Alexa Fluor® and Pacific Blue™ are trademarks of Life Technologies Corporation.

View full statement regarding label licenses
Excitation Laser
Violet Laser (405 nm)
Application Notes

The RPA-T4 antibody binds to the D1 domain of CD4 (CDR1 and CDR3 epitopes) and can block HIV gp120 binding and inhibit syncytia formation. Additional reported applications (for the relevant formats) include: immunohistochemistry of acetone-fixed frozen sections3,4,5, blocking of T cell activation1,2, and spatial biology (IBEX)10,11.  This clone was tested in-house and does not work on formalin fixed paraffin-embedded (FFPE) tissue. The Ultra-LEAF™ purified antibody (Endotoxin < 0.01 EU/µg, Azide-Free, 0.2 µm filtered) is recommended for functional assays (Cat. No. 300569 - 300574).

Application References

(PubMed link indicates BioLegend citation)
  1. Knapp W, et al. 1989. Leucocyte Typing IV. Oxford University Press. New York. (Activ)
  2. Moir S, et al. 1999. J. Virol. 73:7972. (Activ)
  3. Deng MC, et al. 1995. Circulation 91:1647. (IHC)
  4. Friedman T, et al. 1999. J. Immunol. 162:5256. (IHC)
  5. Mack CL, et al. 2004. Pediatr. Res. 56:79. (IHC)
  6. Lan RY, et al. 2006. Hepatology 43:729.
  7. Zenaro E, et al. 2009. J. Leukoc. Biol. 86:1393. (FC) PubMed
  8. Yoshino N, et al. 2000. Exp. Anim. (Tokyo) 49:97. (FC)
  9. Stoeckius M, et al. 2017. Nat. Methods. 14:865. (PG)
  10. Radtke AJ, et al. 2020. Proc Natl Acad Sci USA. 117:33455-33465. (SB) PubMed
  11. Radtke AJ, et al. 2022. Nat Protoc. 17:378-401. (SB) PubMed
Product Citations
  1. Shamriz O, et al. 2023. Front Immunol. 13:1044933. PubMed
  2. Yen M, et al. 2022. Cell. 185:1414. PubMed
  3. Kimman T, et al. 2023. J Immunother Cancer. 11:. PubMed
  4. Freitag PC, et al. 2023. Mol Ther Methods Clin Dev. 29:120. PubMed
  5. Bilich T, et al. 2021. Cancer Discov. 11:1982. PubMed
  6. Hebel K, et al. 2014. J Immunol. 192:5160. PubMed
  7. Lee YJ, et al. 2021. Front Immunol. 615369:12. PubMed
  8. Reed JC, et al. 2020. PLoS One. 15:e0236921. PubMed
  9. Dean JW, et al. 2020. J Autoimmun. 108:102417. PubMed
  10. Kobayashi Y, et al. 2020. Int J Oncol. 999:56. PubMed
  11. Boland J, et al. 2014. BMJ Support Palliat Care. 4:357. PubMed
  12. Veatch JR, et al. 2019. Cancer Immunol Res. 7:910. PubMed
  13. Frencher J, et al. 2014. J Leukoc Biol. 96:957. PubMed
  14. Vadrevu KM, et al. 2022. Sci Rep. 12:12038. PubMed
  15. Barman S, et al. 2016. Int Immunol. 28: 533 - 545. PubMed
  16. Ickrath P, et al. 2019. Biomed Rep. 10:119. PubMed
  17. van der Velden V, et al. 2017. J Immunol Methods. 10.1016/j.jim.2017.03.011. PubMed
  18. Qin H, et al. 2015. Blood. 126: 629 - 639. PubMed
  19. Jiang W, et al. 2014. J Virol. 88:5369. PubMed
  20. Køllgaard T, et al. 2015. PLoS One. 10: 0131934. PubMed
  21. Pons S, et al. 2021. Immun Inflamm Dis. 9:1656. PubMed
  22. Ickrath P, et al. 2018. Int J Mol Med. 42:1116. PubMed
  23. Chen PM, et al. 2022. Sci Adv. 8:eabo4271. PubMed
RRID
AB_493099 (BioLegend Cat. No. 300524)
AB_493099 (BioLegend Cat. No. 300521)

Antigen Details

Structure
Ig superfamily, type I transmembrane glycoprotein, 55 kD
Distribution

T cell subset, majority of thymocytes, monocytes/macrophages

Function
MHC class II co-receptor, lymphocyte adhesion, thymic differentiation, HIV receptor
Ligand/Receptor
MHC class II molecules, HIV gp120, IL-16
Cell Type
Dendritic cells, Macrophages, Monocytes, T cells, Thymocytes, Tregs
Biology Area
Immunology
Molecular Family
CD Molecules
Antigen References

1. Center D, et al. 1996. Immunol. Today 17:476.
2. Gaubin M, et al. 1996. Eur. J. Clin. Chem. Clin. Biochem. 34:723.

Gene ID
920 View all products for this Gene ID
UniProt
View information about CD4 on UniProt.org

Related FAQs

I am unable to see expression of T cell markers such as CD3 and CD4 post activation.
TCR-CD3 complexes on the T-lymphocyte surface are rapidly downregulated upon activation with peptide-MHC complex, superantigen or cross-linking with anti-TCR or anti-CD3 antibodies. PMA/Ionomycin treatment has been shown to downregulate surface CD4 expression. Receptor downregulation is a common biological phenomenon and so make sure that your stimulation treatment is not causing it in your sample type.

Other Formats

View All CD4 Reagents Request Custom Conjugation
Description Clone Applications
APC anti-human CD4 RPA-T4 FC
Biotin anti-human CD4 RPA-T4 FC
FITC anti-human CD4 RPA-T4 FC,SB
PE anti-human CD4 RPA-T4 FC
PE/Cyanine5 anti-human CD4 RPA-T4 FC
PE/Cyanine7 anti-human CD4 RPA-T4 FC
Purified anti-human CD4 RPA-T4 FC,CyTOF®,Activ,Block,IHC
APC/Cyanine7 anti-human CD4 RPA-T4 FC
Alexa Fluor® 488 anti-human CD4 RPA-T4 FC,ICC
Alexa Fluor® 647 anti-human CD4 RPA-T4 FC,SB
Pacific Blue™ anti-human CD4 RPA-T4 FC
Brilliant Violet 421™ anti-human CD4 RPA-T4 FC,ICC
Alexa Fluor® 700 anti-human CD4 RPA-T4 FC,SB
PerCP anti-human CD4 RPA-T4 FC
PerCP/Cyanine5.5 anti-human CD4 RPA-T4 FC
Brilliant Violet 570™ anti-human CD4 RPA-T4 FC
Brilliant Violet 650™ anti-human CD4 RPA-T4 FC
Purified anti-human CD4 (Maxpar® Ready) RPA-T4 FC,CyTOF®
Alexa Fluor® 594 anti-human CD4 RPA-T4 FC,ICC
Brilliant Violet 510™ anti-human CD4 RPA-T4 FC
PE/Dazzle™ 594 anti-human CD4 RPA-T4 FC
Brilliant Violet 785™ anti-human CD4 RPA-T4 FC
Brilliant Violet 605™ anti-human CD4 RPA-T4 FC
Brilliant Violet 711™ anti-human CD4 RPA-T4 FC
APC/Fire™ 750 anti-human CD4 RPA-T4 FC
CD4 Fluorophore Sampler Kit RPA-T4 FC
CD4 Fluorophore Sampler Kit with Veri-Cells™ PBMC RPA-T4 FC
TotalSeq™-A0072 anti-human CD4 RPA-T4 PG
TotalSeq™-B0072 anti-human CD4 RPA-T4 PG
TotalSeq™-C0072 anti-human CD4 RPA-T4 PG
Ultra-LEAF™ Purified anti-human CD4 RPA-T4 FC,CyTOF®,Activ,Block,IHC
TotalSeq™-D0072 anti-human CD4 RPA-T4 PG
Go To Top Version: 2    Revision Date: 07/13/2015

For Research Use Only. Not for diagnostic or therapeutic use.

 

This product is supplied subject to the terms and conditions, including the limited license, located at www.biolegend.com/terms) ("Terms") and may be used only as provided in the Terms. Without limiting the foregoing, BioLegend products may not be used for any Commercial Purpose as defined in the Terms, resold in any form, used in manufacturing, or reverse engineered, sequenced, or otherwise studied or used to learn its design or composition without express written approval of BioLegend. Regardless of the information given in this document, user is solely responsible for determining any license requirements necessary for user’s intended use and assumes all risk and liability arising from use of the product. BioLegend is not responsible for patent infringement or any other risks or liabilities whatsoever resulting from the use of its products.

 

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Toll-Free Phone: 1-877-Bio-Legend (246-5343) Phone: (858) 768-5800 Fax: (877) 455-9587

This data display is provided for general comparisons between formats.
Your actual data may vary due to variations in samples, target cells, instruments and their settings, staining conditions, and other factors.
If you need assistance with selecting the best format contact our expert technical support team.

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