首页 > Biolegend > Biolegend/Recombinant Mouse B7.1 CD80-Fc Chimera carrier-free/25 µg/555404

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Biolegend/Recombinant Mouse B7.1 CD80-Fc Chimera carrier-free/25 µg/555404

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DescriptionThe B7 family of proteins are structurally related, cell membrane-associated molecules that regulate immune responses by delivering costimulatory or coinhibitory signals via their ligands. So far, eight family members have been identified, including B7.1, B7.2, B7-H1, B7-H2, B7-H4, B7-H6, PD-L1, and PD-L2. These proteins are mainly expressed by activated antigen presenting cells (APCs) and when paired with either CD28 or CTLA-4 on a T lymphocyte, they induce an increase or decrease in the downstream signaling activity of the MHC-TCR interaction between APCs and T cells. B7.1 has been shown to bind both CTLA-4 and CD28; however, it has a 20-fold higher affinity to CTLA-4 than to CD28. Despite their structural similarities, the individual contribution of B7.1 and B7.2 to the development of pathogenic T cells in autoimmune diseases and protective T cells in infectious diseases is markedly distinct. Besides regulating T cell immune responses, B7 also plays a role in anti-tumor immunity. This is confirmed by demostrating that cytotoxic T cells were able to eradicate tumor cells transfected with B7.1 and B7.2. After activation, follicular lymphoma was shown to upregulate B7.1 and other costimulatory and adhesion molecules, therefore increasing APC activity and amplifying primed T cell responses. Homozygous null B7.1/B7.2 mice fail to generate antigen specific IgG1 and IgG2a responses, suggesting that B7 proteins are important in Ig immune responses. Mouse and human B7.1 share 44% amino acid identity.Product Details

美国BioLegend公司是世界著名的流式抗体生产商之一。BioLegend聚集了一批来自BD PharMingen公司的专业人士，建立了一支具有雄厚技术背景的专业队伍。通过其自身的先天优势，以及与世界知名实验室和研究所的良好合作关系，以最合理的价格为生物医药研究的各个前沿领域提供高质量的抗体、试剂盒及其他相关产品