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PE-Cy™7 Mouse Anti-Human CD127 HIL-7R-M21 RUO

PE-Cy™7 Mouse Anti-Human CD127 

Clone  HIL-7R-M21   (RUO)

  • Brand BD Pharmingen™
  • Alternative Name IL-7R; IL7R; IL7RA; IL-7Rα; IL-7R-alpha; Interleukin-7 Receptor alpha
  • Vol. Per Test 5 µl
  • Isotype Mouse IgG1, κ
  • Reactivity Human (QC Testing) 
  • Application Flow cytometry (Routinely Tested) 
  • Immunogen Human IL-7R Recombinant Protein
  • Entrez Gene ID 3575 
  • Storage Buffer Aqueous buffered solution containing BSA and ≤0.09% sodium azide.
  • Regulatory Status RUO
Product Details Recommended Assay References

Description

The hIL-7R-M21 monoclonal antibody specifically binds to the 60-90 kDa glycoprotein, CD127. CD127 is also known as the IL-7 receptor alpha (IL-7Rα) subunit. The IL-7 receptor complex is a heterodimer composed of CD127 and the common gamma chain (γc, CD132), shared by other cytokine receptors (IL-2R, IL-4R, IL-9R, IL-15R, and IL-21R). CD127 is expressed on thymocytes, T- and B-cell progenitors, mature T cells, and some lymphoid and myeloid cells. In vitro experiments show the expression of CD127 is down-regulated following T cell activation. Studies indicate that the IL-7 Receptor plays an important role in the proliferation and differentiation of mature T cells. Recently, it has been shown that low surface expression of CD127, in combination with intermediate to high surface expression of CD25, the α chain of the IL-2 receptor complex, can distinguish between human regulatory and conventional CD4+ T cells in human adult and cord blood, lymph nodes and thymus.

Format
  • Format PE-Cy™7
  • Excitation Source Blue 488 nm,Green 532 nm,Yellow/Green 561 nm
  • Excitation Max 496 nm
  • Emission Max 785 nm

PE-Cy™7 is a tandem fluorochrome that combines PE and a cyanine dye. PE-Cy7 conjugated reagents are as bright as PE conjugates. PE-Cy7 is particularly sensitive to photo-induced degradation, resulting in loss of fluorescence and changes in fluorescence spillover. Extreme caution must be taken to avoid light exposure and prolonged exposure to paraformaldehyde fixative. Fixed cells should be analyzed within 4 hours of fixation in paraformaldehyde or transferred to a paraformaldehyde-free buffer for overnight storage.

Other Formats →

Suggested Companion Products

PE-Cy™7 Mouse IgG1 κ Isotype Control RUO
100 Tests Cat No: 557872

Lysing Buffer RUO
100 mL Cat No: 555899

Lysing Solution 10X Concentrate IVD
100 Cat No: 349202

Stain Buffer (FBS) RUO
500 mL Cat No: 554656

Stain Buffer (BSA) RUO
500 mL Cat No: 554657

Resources & Tools
 Spectrum Viewer  Panel Designer  Spectrum Viewer  Download MSDS  Download TDS
Preparation and Storage

Store undiluted at 4°C and protected from prolonged exposure to light. Do not freeze. The monoclonal antibody was purified from tissue culture supernatant or ascites by affinity chromatography. The antibody was conjugated with PE-Cy7 under optimum conditions, and unconjugated antibody and free PE-Cy7 were removed.

Product Notices

  1. This reagent has been pre-diluted for use at the recommended Volume per Test. We typically use 1 × 10^6 cells in a 100-µl experimental sample (a test).
  2. An isotype control should be used at the same concentration as the antibody of interest.
  3. Source of all serum proteins is from USDA inspected abattoirs located in the United States.
  4. Caution: Sodium azide yields highly toxic hydrazoic acid under acidic conditions. Dilute azide compounds in running water before discarding to avoid accumulation of potentially explosive deposits in plumbing.
  5. Warning: Some APC-Cy7 and PE-Cy7 conjugates show changes in their emission spectrum with prolonged exposure to formaldehyde. If you are unable to analyze fixed samples within four hours, we recommend that you use BD™ Stabilizing Fixative (Cat. No. 338036).
  6. Please observe the following precautions: Absorption of visible light can significantly alter the energy transfer occurring in any tandem fluorochrome conjugate; therefore, we recommend that special precautions be taken (such as wrapping vials, tubes, or racks in aluminum foil) to prevent exposure of conjugated reagents, including cells stained with those reagents, to room illumination.
  7. PE-Cy7 is a tandem fluorochrome composed of R-phycoerythrin (PE), which is excited by 488-nm light and serves as an energy donor, coupled to the cyanine dye Cy7, which acts as an energy acceptor and fluoresces maximally at 780 nm. PE-Cy7 tandem fluorochrome emission is collected in a detector for fluorescence wavelengths of 750 nm and higher. Although every effort is made to minimize the lot-to-lot variation in the efficiency of the fluorochrome energy transfer, differences in the residual emission from PE may be observed. Therefore, we recommend that individual compensation controls be performed for every PE-Cy7 conjugate. PE-Cy7 is optimized for use with a single argon ion laser emitting 488-nm light, and there is no significant overlap between PE-Cy7 and FITC emission spectra. When using dual-laser cytometers, which may directly excite both PE and Cy7, we recommend the use of cross-beam compensation during data acquisition or software compensation during data analysis.
  8. For fluorochrome spectra and suitable instrument settings, please refer to our Multicolor Flow Cytometry web page at www.bdbiosciences.com/colors.
  9. Cy is a trademark of GE Healthcare.
  10. Please refer to www.bdbiosciences.com/us/s/resources for technical protocols.


  1. Akashi K, Traver D, Kondo M, Weissman IL. Lymphoid development from hematopoietic stem cells. Int J Hematol. 1999; 69(4):217-226. (Biology: Flow cytometry). View reference

  2. Appasamy PM. Biological and clinical implications of interleukin-7 and lymphopoiesis. Cytokines Cell Mol Ther. 1999; 5(1):25-39. (Biology: Flow cytometry). View reference

  3. Armitage RJ, Ziegler SF, Friend DJ, Park LS, Fanslow WC. Identification of a novel low-affinity receptor for human interleukin-7. Blood. 1992; 79(7):1738-1745. (Clone-specific: Flow cytometry). View reference

  4. Goodwin RG, Friend D, Ziegler SF et al. Cloning of the human and murine interleukin-7 receptors: demonstration of a soluble form and homology to a new receptor superfamily. Cell. 1990; 60(6):941-951. (Biology: Flow cytometry). View reference

  5. Hardy RR, Carmack CE, Shinton SA, Kemp JD, Hayakawa K. Resolution and characterization of pro-B and pre-pro-B cell stages in normal mouse bone marrow. J Exp Med. 1991; 173(5):1213-1225. (Biology: Flow cytometry). View reference

  6. Hofmeister R, Khaled AR, Benbernou N, Rajnavolgyi E, Muegge K, Durum SK. Interleukin-7: physiological roles and mechanisms of action. Cytokine Growth Factor Rev. 1999; 10(1):41-60. (Biology: Flow cytometry). View reference

  7. In: Fitzgerald KA, Callard RE. The cytokine factsbook., 2nd ed. / Katherine A. Fitzgerald ... [et al.].. San Diego: Academic Press; 2001; :75.

  8. Liu W, Putnam AL, Xu-Yu Z, et al. CD127 expression inversely correlates with FoxP3 and suppressive function of human CD4+ T reg cells. J Exp Med. 2006; 203(7):1701-1711. (Biology: Flow cytometry). View reference

  9. Namen AE, Lupton S, Hjerrild K et al. Stimulation of B-cell progenitors by cloned murine interleukin-7. Nature. 1988; 333(6173):571-573. (Biology: Flow cytometry). View reference

  10. Plum J, De Smedt M, Leclercq G, Verhasselt B, Vandekerckhove B. Interleukin-7 is a critical growth factor in early human T-cell development. Blood. 1996; 88(11):4239-4245. (Biology: Flow cytometry). View reference

  11. Seddiki N, Santner-Nanan B, Martinson J et al. Expression of interleukin (IL)-2 and IL-7 receptors discriminates between human regulatory and activated T cells. J Exp Med. 2006; 203(7):1693-1700. (Biology: Flow cytometry). View reference

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