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Purified Mouse Anti-Human CD152
Purified Mouse Anti-Human CD152

Immunohistochemical staining of CTLA-4 positive cells. Frozen section of normal human tonsil was stained with Purified Mouse Anti-Human CD152 (Cat. No. 550405), and visualized with Biotin Goat Anti-Mouse Ig (Multiple Adsorption) (Cat. No. 550337), Streptavidin HRP (Cat. No. 550946), and DAB Substrate Kit (Cat. No. 550880). Activated T- and B-lymphocytes positive for CTLA-4 can be identified by the intense brown labeling of their cell membranes. Amplification 40X.

Immunohistochemical staining of CTLA-4 positive cells. Frozen section of normal human tonsil was stained with Purified Mouse Anti-Human CD152 (Cat. No. 550405), and visualized with Biotin Goat Anti-Mouse Ig (Multiple Adsorption) (Cat. No. 550337), Streptavidin HRP (Cat. No. 550946), and DAB Substrate Kit (Cat. No. 550880). Activated T- and B-lymphocytes positive for CTLA-4 can be identified by the intense brown labeling of their cell membranes. Amplification 40X.

Product Details
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BD Pharmingen™
CTLA-4; AILIM; Cytotoxic T-lymphocyte protein 4
Human (QC Testing), Rhesus, Cynomolgus, Baboon (Tested in Development)
Mouse BALB/c IgG2a, κ
Human CTLA4 Recombinant Protein
Flow cytometry (Routinely Tested), Immunofluorescence, Immunohistochemistry-frozen (Tested During Development), Immunohistochemistry-paraffin (Not Recommended)
250 µg/ml
1493
AB_393666
Aqueous buffered solution containing BSA, goat serum, and ≤0.09% sodium azide.
RUO


Preparation And Storage

Store undiluted at 4°C. The monoclonal antibody was purified from tissue culture supernatant or ascites by affinity chromatography.

Recommended Assay Procedures

Immunohistochemistry: The BNI3.1 clone reactive against human CD152 is tested for immunohistochemical staining of acetone-fixed frozen sections. Tissue tested was human spleen and tonsil. The antibody stains activated T- and B-lymphocytes. The isotype control recommended for use with this antibody is purified mouse IgG2a (Cat. No. 550339). For optimal indirect immunohistochemical staining, the BNI3.1 antibody should be titrated (1:10 to 1:50 dilution) and visualized via a three-step staining procedure in combination with polyclonal, biotin conjugated anti-mouse Igs (multiple adsorbed) (Cat. No. 550337) as the secondary antibody and Streptavidin-HRP (Cat. No. 550946) together with the DAB detection system (Cat. No. 550880).

Product Notices

  1. Since applications vary, each investigator should titrate the reagent to obtain optimal results.
  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. This antibody has been developed for the immunohistochemistry application. However, a routine immunohistochemistry test is not performed on every lot. Researchers are encouraged to titrate the reagent for optimal performance.
  6. Species cross-reactivity detected in product development may not have been confirmed on every format and/or application.
  7. Sodium azide is a reversible inhibitor of oxidative metabolism; therefore, antibody preparations containing this preservative agent must not be used in cell cultures nor injected into animals. Sodium azide may be removed by washing stained cells or plate-bound antibody or dialyzing soluble antibody in sodium azide-free buffer. Since endotoxin may also affect the results of functional studies, we recommend the NA/LE (No Azide/Low Endotoxin) antibody format, if available, for in vitro and in vivo use.
  8. Please refer to www.bdbiosciences.com/us/s/resources for technical protocols.
550405 Rev. 3
Antibody Details
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BNI3

The BNI3 monoclonal antibody specifically binds to the human cytolytic T lymphocyte-associated antigen (CTLA-4), also known as CD152. CTLA-4 is transiently expressed on activated CD28+ T cells and binds to CD80 and CD86 present on antigen presenting cells (APC) with high avidity. This interaction appears to deliver a negative regulatory signal to the T cell. Recent reports indicate that CTLA-4 is also expressed on B cells when cultured with activated T cells, suggesting a role for CTLA-4 in the regulation of B-cell response. Immobilized BNI3 antibody enhances T-cell proliferation induced by antibody-mediated crosslinking of CD3 and CD28. Recent studies have shown that CD152 can be expressed by regulatory T (Treg) cells. After cellular fixation and permeabilization, the BNI3 antibody can stain intracellular CD152 expressed in T cells including Treg cells. Clone BNI3 was studied in the VI Leukocyte Typing Workshop.

Clone BNI3 also cross-reacts with a subset of peripheral blood lymphocytes of baboon, and both rhesus and cynomolgus macaque monkeys, following Concanavalin A (Con A) treatment. The distribution of BNI3+ cells following activation is similar to that observed with peripheral blood lymphocytes from normal human donors.

550405 Rev. 3
Format Details
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Purified
Tissue culture supernatant is purified by either protein A/G or affinity purification methods. Both methods yield antibody in solution that is free of most other soluble proteins, lipids, etc. This format provides pure antibody that is suitable for a number of downstream applications including: secondary labeling for flow cytometry or microscopy, ELISA, Western blot, etc.
Purified
550405 Rev.3
Citations & References
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Development References (4)

  1. Barclay NA, Brown MH, Birkeland ML, et al, ed. The Leukocyte Antigen FactsBook. San Diego, CA: Academic Press; 1997.
  2. Kuiper HM, Brouwer M, Linsley PS, van Lier RA. Activated T cells can induce high levels of CTLA-4 expression on B cells. J Immunol. 1995; 155(4):1776-1783. (Biology). View Reference
  3. Lindsten T, Lee KP, Harris ES, et al. Characterization of CTLA-4 structure and expression on human T cells. J Immunol. 1993; 151(7):3489-3499. (Biology). View Reference
  4. Morton PA, Fu XT, Stewart JA, et al. Differential effects of CTLA-4 substitutions on the binding of human CD80 (B7-1) and CD86 (B7-2). J Immunol. 1996; 156(3):1047-1054. (Biology). View Reference
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550405 Rev. 3

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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.