Reacts with the "cytolytic T lymphocyte-associated antigen", CTLA-4. 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. There are recent reports that indicate that CTLA-4 is also expressed on B cells when cultured with activated T cells, suggesting a possible role of CTLA-4 in the regulation of B-cell response. Immobilized BNI3.1 enhances T-cell proliferation induced by CD3 and CD28. This antibody is routinely tested by flow cytometric analysis. Other applications were tested during antibody development only or reported in the literature. Profile of Concanavalin A-stimulated peripheral blood mononuclear cells analyzed on a FACScan
CTLA4
Reactivity: Human, Mouse, Rat
FACS, WB, ELISA, IHC (p), IF (p)
Host: Rabbit
Polyclonal
unconjugated
Application Notes
Optimal working dilution should be determined by the investigator.
Sample Volume
20 μL
Restrictions
For Research Use only
Buffer
Aqueous buffered solution containing BSA and ≤0.09 % sodium azide.
Preservative
Sodium azide
Precaution of Use
This product contains Sodium azide: a POISONOUS AND HAZARDOUS SUBSTANCE which should be handled by trained staff only.
Handling Advice
The antibody was conjugated with biotin under optimum conditions, and unreacted biotin was removed.
Storage
4 °C
Storage Comment
Store undiluted at 4°C and protected from prolonged exposure to light. Do not freeze.
Morton, Fu, Stewart, Giacoletto, White, Leysath, Evans, Shieh, Karr: "Differential effects of CTLA-4 substitutions on the binding of human CD80 (B7-1) and CD86 (B7-2)." in: Journal of immunology (Baltimore, Md. : 1950), Vol. 156, Issue 3, pp. 1047-54, (1996) (PubMed).
Kuiper, Brouwer, Linsley, van Lier: "Activated T cells can induce high levels of CTLA-4 expression on B cells." in: Journal of immunology (Baltimore, Md. : 1950), Vol. 155, Issue 4, pp. 1776-83, (1995) (PubMed).
Lindsten, Lee, Harris, Petryniak, Craighead, Reynolds, Lombard, Freeman, Nadler, Gray: "Characterization of CTLA-4 structure and expression on human T cells." in: Journal of immunology (Baltimore, Md. : 1950), Vol. 151, Issue 7, pp. 3489-99, (1993) (PubMed).
Guesdon, Ternynck, Avrameas: "The use of avidin-biotin interaction in immunoenzymatic techniques." in: The journal of histochemistry and cytochemistry : official journal of the Histochemistry Society, Vol. 27, Issue 8, pp. 1131-9, (1979) (PubMed).
Target
CTLA4
(Cytotoxic T-Lymphocyte-Associated Protein 4 (CTLA4))