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Background
Cluster of Differentiation 86 (CD86) is also known as B-lymphocyte activation antigen B7-2, is a type I membrane protein that is a member of the immunoglobulin superfamily, and is constitutively expressed on interdigitating dendritic cells, Langerhans cells, peripheral blood dendritic cells, memory B cells, and germinal center B cells. Additionally, B72 is expressed at low levels on monocytes and can be upregulated through interferon γ. CD86 is the ligand for two different proteins on the T cell surface: CD28 (for autoregulation and intercellular association) and CTLA-4 (for attenuation of regulation and cellular disassociation). CD86 works in tandem with CD80 to prime T cells. Recent study has revealed that B7-2 promotes the generation of a mature APC repertoire and promotes APC function and survival. Furthermore, the B7 proteins are also involved in innate immune responses by activating NF-κB-signaling pathway in macrophages. CD86 thus is regarded as a promising candidate for immune therapy. CD86+ macrophages in Hodgkin lymphoma patients are an independent marker for potential nonresponse to firstline-therapy.
Source
Recombinant Human B7-2, His Tag (CD6-H5223) is expressed from human 293 cells (HEK293). It contains AA Leu 26 - Pro 247 (Accession # AAH40261).
Predicted N-terminus: Leu 26
Molecular Characterization
This protein carries a polyhistidine tag at the C-terminus.
The protein has a calculated MW of 26.2 kDa. The protein migrates as 40-63 kDa when calibrated against Star Ribbon Pre-stained Protein Marker under reducing (R) condition (SDS-PAGE) due to glycosylation.
Endotoxin
Less than 1.0 EU per μg by the LAL method.
Purity
>95% as determined by SDS-PAGE.
>90% as determined by SEC-MALS.
Formulation
Lyophilized from 0.22 μm filtered solution in PBS, pH7.4 with trehalose as protectant.
Reconstitution
See Certificate of Analysis for details of reconstitution instruction and specific concentration.
Storage
For long term storage, the product should be stored at lyophilized state at -20°C or lower.
Please avoid repeated freeze-thaw cycles.
This product is stable after storage at:
-20°C to -70°C for 12 months in lyophilized state;
-70°C for 3 months under sterile conditions after reconstitution.
Bioactivity
Please refer to product data sheet.
(1) "An Industry Perspective on the use of Forced Degradation Studies to Assess Comparability of Biopharmaceuticals"
Campbell, Colombo, Doyle et al
J Pharm Sci (2023)
(2) "A better understanding of the role of the CTLA-CD80/86 axis in the treatment of autoimmune diseases"
Darvish, Kheder, Faraj et al
Cell Biochem Funct (2024) 42 (1), e3895
(3) "Predicting the Response to Neoadjuvant Chemoradiotherapy in Locally Advanced Rectal Cancer Using Soluble Immune Checkpoints"
Ari, Sevik, Sevinc et al
Cancer Biother Radiopharm (2023)
Showing 1-3 of 4787 papers.
Recombinant human B7-2 / CD86 Protein, Fc tag (MALS verified), 200µg - 442,00 €
Recombinant Cynomolgus / Rhesus macaque B7-2 / CD86 Protein, His Tag (MALS verified) , 100µg - 338,00 €
Recombinant Mouse B7-2 / CD86 Protein, His Tag (MALS verified),100µg - 234,00 €
Recombinant Cynomolgus / Rhesus macaque B7-2 / CD86 Protein, Fc Tag, 100µg - 338,00 €
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