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PE Mouse anti-BLNK
PE Mouse anti-BLNK

Analysis of BLNK in human peripheral blood lymphocytes.  Human whole blood was lysed and fixed with 1X BD Phosflow™ Lyse/Fix Buffer (Cat. No. 558049) for 10-15 minutes at 37ºC, and the leukocytes were permeabilized with BD Phosflow™ Perm Buffer II (Cat. No. 558052) on ice for 30 minutes.  The cells were then stained with either PE Mouse IgG2a, κ, isotype control (Cat. No. 558595, left panel) or PE Mouse anti-BLNK (Cat. No. 558688, right panel).  B lymphocytes were identified by their scatter profile and staining with PerCP-Cy5.5 Mouse anti-human CD20 (cytoplasmic) (Cat. No. 558021).  BLNK expression was restricted to the CD20-positive B cells.  Flow cytometry was performed on a BD FACSCalibur™ flow cytometry system.

Analysis of BLNK in human peripheral blood lymphocytes.  Human whole blood was lysed and fixed with 1X BD Phosflow™ Lyse/Fix Buffer (Cat. No. 558049) for 10-15 minutes at 37ºC, and the leukocytes were permeabilized with BD Phosflow™ Perm Buffer II (Cat. No. 558052) on ice for 30 minutes.  The cells were then stained with either PE Mouse IgG2a, κ, isotype control (Cat. No. 558595, left panel) or PE Mouse anti-BLNK (Cat. No. 558688, right panel).  B lymphocytes were identified by their scatter profile and staining with PerCP-Cy5.5 Mouse anti-human CD20 (cytoplasmic) (Cat. No. 558021).  BLNK expression was restricted to the CD20-positive B cells.  Flow cytometry was performed on a BD FACSCalibur™ flow cytometry system.

Product Details
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BD Phosflow™
SLP-65, BASH, BCA
Human (QC Testing), Mouse (Tested in Development)
Mouse IgG2a, κ
Human N-terminal BLNK Recombinant Protein
Intracellular staining (flow cytometry) (Routinely Tested)
20 µl
AB_1645329
Aqueous buffered solution containing BSA and ≤0.09% sodium azide.
RUO


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 R-PE under optimum conditions, and unconjugated antibody and free PE were removed.

Recommended Assay Procedures

This antibody conjugate is suitable for intracellular staining of human whole blood (using BD Phosflow™ Lyse/Fix Buffer) and peripheral blood mononuclear cells (using BD Cytofix™ Fixation Buffer).  Any of the three BD Phosflow™ permeabilization buffers may be used.

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. For fluorochrome spectra and suitable instrument settings, please refer to our Multicolor Flow Cytometry web page at www.bdbiosciences.com/colors.
  6. Please refer to www.bdbiosciences.com/us/s/resources for technical protocols.
558688 Rev. 2
Antibody Details
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2B11

B cell activation is initiated by crosslinking the B cell receptor, which leads to activation of non-receptor protein tyrosine kinases (PTK), including Btk, Syk, and three Src kinases, Fyn, Lyn, and Blk.  Activated PTKs then phosphorylate multiple cellular proteins involved in B lymphocyte signaling.  Syk is responsible for the tyrosine phosphorylation of B cell linker protein (BLNK), a member of the SLP-76 family of adapter proteins.  Phosphorylation of human BLNK at tyrosines 84, 178, and 189 (Y84, Y178, and Y189) creates docking sites for PLCγ2, leading to the activation of downstream signaling pathways.  

The 2B11 monoclonal antibody recognizes BLNK, regardless of phosphorylation status. A fusion protein representing amino acids 4-205 of human BLNK was used as the immunogen. BLNK is expressed as two phosphoproteins migrating at 68 and 70 kDa in SDS/PAGE that represent alternatively spliced forms of human BLNK.

558688 Rev. 2
Format Details
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PE
R-Phycoerythrin (PE), is part of the BD family of Phycobiliprotein dyes. This fluorochrome is a multimeric fluorescent phycobiliprotein with excitation maximum (Ex Max) of 496 nm and 566 nm and an emission maximum (Em Max) at 576 nm. PE is designed to be excited by the Blue (488 nm), Green (532 nm) and Yellow-Green (561 nm) lasers and detected using an optical filter centered near 575 nm (e.g., a 575/26-nm bandpass filter). As PE is excited by multiple lasers, this can result in cross-laser excitation and fluorescence spillover on instruments with various combinations of Blue, Green, and Yellow-Green lasers. Please ensure that your instrument’s configurations (lasers and optical filters) are appropriate for this dye.
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PE
Yellow-Green 488 nm, 532 nm, 561 nm
496 nm, 566 nm
576 nm
558688 Rev.2
Citations & References
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Development References (6)

  1. Chiu CW, Dalton M, Ishiai M, Kurosaki T, Chan AC. BLNK: molecular scaffolding through 'cis'-mediated organization of signaling proteins. EMBO J. 2002; 21:6461-6472. (Clone-specific).
  2. Janssen E, Zhang W. Adaptor proteins in lymphocyte activation. Curr Opin Immunol. 2003; 15:269-276. (Biology). View Reference
  3. Li X, Martin F, Oliver AM, Kearney JF, Carter RH. Antigen receptor proximal signaling in splenic B-2 cell subsets. J Immunol. 2001; 166:3122-3129. (Clone-specific).
  4. Minegishi Y, Rohrer J, Coustan-Smith E, et al. An essential role for BLNK in human B cell development. Science. 1999; 286:1954-1957. (Immunogen: Flow cytometry).
  5. Taguchi T, Kiyokawa N, Takenouch H, et al. Deficiency of BLNK hampers PLC-γ2 phosphorylation and Ca2+ influx induced by the pre-B-cell receptor in human pre-B cells. Immunology. 2004; 122:575-582. (Clone-specific: Flow cytometry).
  6. Wu JN, Koretzky GA. The SLP-76 family of adapter proteins. Semin Immunol. 2004; 16:379-393. (Biology). View Reference
View All (6) View Less
558688 Rev. 2

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Global - Refer to manufacturer's instructions for use and related User Manuals and Technical data sheets before using this products as described


Comparisons, where applicable, are made against older BD Technology, manual methods or are general performance claims.  Comparisons are not made against non-BD technologies, unless otherwise noted.

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