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Anti-Rt CD28 PE

CD28 is the critical T cell costimulatory receptor which provides to the cell the important second activation signal by binding CD80 and CD86 that are expressed by antigen presenting cells. Besides its costimulation role CD28 functions in preventing T cells from anergic hyporesponsive state or from undergoing premature apoptotic cell death. CD28 is also expressed on human fetal NK cells and some NK cell lines, whereas on murine NK cells the CD28 expression is much broader.

Product Specifications

Certification

RUO

Immunogen

Mouse A20J B lymphoma cells transfected with rat CD28

Target Antigen

CD28

Clone

JJ319

Applications

FC (QC tested)

Concentration

0.5 mg/mL

Format

PE

Buffer

Phosphate buffered saline (PBS), pH 7.4, 15 mM sodium azide

References & Citations

*Haspot F, Villemain F, Laflamme G, Coulon F, Olive D, Tiollier J, Soulillou JP, Vanhove B: Differential effect of CD28 versus B7 blockade on direct pathway of allorecognition and self-restricted responses. Blood. 2002 Mar 15;99 (6) :2228-34., URL: http://www.ncbi.nlm.nih.gov/pubmed/11877302 , *Laskowski IA, Pratschke J, Wilhelm MJ, Dong VM, Beato F, Taal M, Gasser M, Hancock WW, Sayegh MH, Tilney NL: Anti-CD28 monoclonal antibody therapy prevents chronic rejection of renal allografts in rats. J Am Soc Nephrol. 2002 Feb;13 (2) :519-27., URL: http://www.ncbi.nlm.nih.gov/pubmed/11805183 , *van den Brandt J, Wang D, Reichardt HM: Resistance of single-positive thymocytes to glucocorticoid-induced apoptosis is mediated by CD28 signaling. Mol Endocrinol. 2004 Mar;18 (3) :687-95., URL: http://www.ncbi.nlm.nih.gov/pubmed/14701943 , *Kerstan A, Armbruster N, Leverkus M, Hünig T: Cyclosporin A abolishes CD28-mediated resistance to CD95-induced apoptosis via superinduction of caspase-3. J Immunol. 2006 Dec 1;177 (11) :7689-97., URL: http://www.ncbi.nlm.nih.gov/pubmed/17114439 , *Guillonneau C, Séveno C, Dugast AS, Li XL, Renaudin K, Haspot F, Usal C, Veziers J, Anegon I, Vanhove B: Anti-CD28 antibodies modify regulatory mechanisms and reinforce tolerance in CD40Ig-treated heart allograft recipients. J Immunol. 2007 Dec 15;179 (12) :8164-71., URL: http://www.ncbi.nlm.nih.gov/pubmed/18056359 , *Dengler TJ, Szabo G, Sido B, Nottmeyer W, Zimmerman R, Vahl CF, Hünig T, Meuer SC: Prolonged allograft survival but no tolerance induction by modulating CD28 antibody JJ319 after high-responder rat heart transplantation. Transplantation. 1999 Feb 15;67 (3) :392-8., URL: http://www.ncbi.nlm.nih.gov/pubmed/10030284 , *Lühder F, Huang Y, Dennehy KM, Guntermann C, Müller I, Winkler E, Kerkau T, Ikemizu S, Davis SJ, Hanke T, Hünig T: Topological requirements and signaling properties of T cell-activating, anti-CD28 antibody superagonists. J Exp Med. 2003 Apr 21;197 (8) :955-66., URL: http://www.ncbi.nlm.nih.gov/pubmed/12707299 , *Tacke M, Hanke G, Hanke T, Hünig T: CD28-mediated induction of proliferation in resting T cells in vitro and in vivo without engagement of the T cell receptor: evidence for functionally distinct forms of CD28. Eur J Immunol. 1997 Jan;27 (1) :239-47., URL: https://www.ncbi.nlm.nih.gov/pubmed/9022025, *Robinson LE, Clandinin MT, Field CJ: R3230AC rat mammary tumor and dietary long-chain (n-3) fatty acids change immune cell composition and function during mitogen activation. J Nutr. 2001 Jul;131 (7) :2021-7., URL: https://www.ncbi.nlm.nih.gov/pubmed/11435524

Storage Conditions

Store at 2-8°C. Protect from prolonged exposure to light. Do not freeze.

Specificity

The mouse monoclonal antibody JJ319 reacts with an extracellular epitope of CD28, a disulfide-linked homodimeric type I glycoprotein (monomer of Mw 44 kDa) which is a critical costimulatory receptor of T cells.

Applications Notes

Flow cytometry: Recommended dilution: 1-5 μg/ml.

Species

Rat

CAS Number

9007-83-4

Isotype

Mouse IgG1 kappa

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