Recombinant Human B7-H2 Fc Chimera Protein, CF

This product is produced by and ships from R&D Systems, Inc., a Bio-Techne brand.

B7-H2, also known as B7-related protein (B7RP1), ICOS Ligand, and CD275, is an approximately 60 kDa transmembrane glycoprotein in the B7 family of immune regulatory molecules (1). Mature human B7-H2 consists of a 238 amino acid (aa) extracellular domain (ECD) with two immunoglobulin-like domains, a 21 aa transmembrane segment, and a 25 aa cytoplasmic domain (2, 3). Within the ECD, human B7-H2 shares 50% and 54% aa sequence identity with mouse and rat B7‑H2, respectively. Alternative splicing generates a long isoform that carries a 10 aa substitution for the C-terminal 3 residues. B7-H2 is expressed on antigen presenting cells such as B cells, macrophages, monocytes, and dendritic cells (2-6). It binds to ICOS on activated T cells, leading to both positive and negative effects on immune responses including its own down-regulation (2, 4, 7). Mouse and human B7-H2 exhibit cross-species binding to ICOS (3, 6). The B7-H2 interaction with ICOS is costimulatory for T cell proliferation as well as the development of B cells, plasma cells, follicular helper T cells (T^FH) and germinal centers (2-4, 8, 9). In human but not in mouse, B7-H2 additionally binds to CD28 and CTLA4, and its interaction with CD28 can costimulate both human and mouse naïve T cells and regulatory T cells (Treg) (6). B7-H2 contributes to the development of allergic asthma by enhancing Th2 biased immune responses, limiting Th17 responses, and promoting eosinophilic infiltration into the lung (8, 10, 11). Its activation of ICOS on Treg limits pulmonary inflammation and airway hyperresponsiveness, promotes the development of inhalational tolerance, and impairs anti-tumor immunity (5, 12, 13). In contrast, its ligation of ICOS on T^FH cells can increase the severity of autoimmune symptoms (9). A soluble form of human B7-H2 is elevated in the circulation of patients with active systemic lupus erythematosus (14). In the thyroid, B7-H2 is up-regulated on thyrocytes during inflammation and promotes their proliferation and production of thryoid hormones (15).

We have publications tested in 1 confirmed species: Human.

We have publications tested in 1 application: Bioassay.

Showing Publications 1 - 4 of 4.

Publications using 165-B7	Applications	Species
Activin A programs the differentiation of human TFH cells Nat Immunol, 2016-07-04;17(8):976-84. 2016-07-04 [PMID: 27376469] (Bioassay, Human)	Bioassay	Human
Arcangeli M, Bardin F, Frontera V, Bidaut G, Obrados E, Adams R, Chabannon C, Aurrand-Lions M Function of Jam-B/Jam-C interaction in homing and mobilization of human and mouse hematopoietic stem and progenitor cells. Stem Cells, 2014-04-01;32(4):1043-54. 2014-04-01 [PMID: 24357068] (Bioassay, Human)	Bioassay	Human
ICOS-LICOS interaction is critically involved in TGN1412-mediated T-cell activation. Blood, 2012-05-10;119(26):6268-77. 2012-05-10 [PMID: 22577174] (Bioassay, Human)	Bioassay	Human
Mesturini R, Nicola S, Chiocchetti A, Bernardone IS, Castelli L, Bensi T, Ferretti M, Comi C, Dong C, Rojo JM, Yagi J, Dianzani U ICOS cooperates with CD28, IL-2, and IFN-gamma and modulates activation of human naive CD4+ T cells. Eur. J. Immunol., 2006-10-01;36(10):2601-12. 2006-10-01 [PMID: 17013990] (Bioassay, Human)	Bioassay	Human

Array 165-B7

• B7-H2/ICOSLG Antibodies
• B7-H2/ICOSLG Antibody Pair
• B7-H2/ICOSLG Lysate
• B7-H2/ICOSLG Protein
• B7-H2/ICOSLG ELISAs
• B7-H2/ICOSLG Proteins and Enzymes