MHC Ligand

Cholic acid 7-sulfate (7-Sulfocholic acid) is a selective agonist targeting TGR5 (EC₅₀=0.17 μM) and a ligand for MHC class I-related protein (MR1). As a gut-restricted TGR5 agonist, cholic acid 7-sulfate binds to TGR5 on enteroendocrine L cells, induces GLP-1 secretion, and improves glucose tolerance in a TGR5-dependent manner. Cholic acid 7-sulfate also acts as an endogenous ligand for MR1, promoting the survival of mucosal-associated invariant T cells MAIT and the expression of homeostatic gene signatures, affecting MAIT cell development and function. Cholic acid 7-sulfate is mainly used in the research of diabetes and MAIT cell-related immune regulation.

ESAT6 Epitope is a ESAT6 CD4⁺ T cell epitope. ESAT6 Epitope binds to MHC class I molecules with an IC₅₀ value of approximately 180 nM. ESAT6 Epitope has weak immunogenicity. ESAT6 Epitope can be used in studies related to pulmonary tuberculosis.

CMV pp65(13-27) is a biological active peptide. (This peptide is derived from amino acid residues 13 to 27 of the 65k lower matrix phosphoprotein of the human cytomegalovirus. It contains a nine-amino-acid sequence (LGPISGHVL) that matches the consensus binding motif for a major histocompatibility complex H2-Dd T-cell epitope.)

VMAPRTLFL is a 9-mer peptide derived from the signal peptide of HLA-G and can serve as a peptide ligand for HLA-E. VMAPRTLFL plays a crucial role in regulating the functions of adaptive natural killer (NK) cells. Specifically, VMAPRTLFL enriches FcεRγ^- adaptive NK cells, upregulates the expression of CD25, and enhances their proliferative activity, antibody-dependent cellular cytotoxicity (ADCC), and IFN-γ release. VMAPRTLFL can be used in research related to human cytomegalovirus (HCMV) infection, transplant rejection, and pregnancy immunity.

BAGE (2-10) is a BAGE-encoded nonapeptide. BAGE (2-10) binds to the HLA-Cw*1601 molecule to form an antigen recognized by autologous cytotoxic T lymphocytes. BAGE (2-10) can be used in melanoma research.

Adipophilin-derived peptide is a peptide derived from Adipophilin. Adipophilin-derived peptide binds to HLA-A*0201. Adipophilin-derived peptide can be used in cancer research.

GFKQSSKAL is an e14a2 junctional sequence. GFKQSSKAL binds well to HLA-B8. GFKQSSKAL can be used in the research of chronic myeloid leukemia.

Cholic acid 7-sulfate-d₄ (7-Sulfocholic acid-d₄) is the deuterium labeled Cholic acid 7-sulfate (HY-126855). Cholic acid 7-sulfate is a selective agonist targeting TGR5 (EC₅₀=0.17 μM) and a ligand for MHC class I-related protein (MR1). As a gut-restricted TGR5 agonist, cholic acid 7-sulfate binds to TGR5 on enteroendocrine L cells, induces GLP-1 secretion, and improves glucose tolerance in a TGR5-dependent manner. Cholic acid 7-sulfate also acts as an endogenous ligand for MR1, promoting the survival of mucosal-associated invariant T cells MAIT and the expression of homeostatic gene signatures, affecting MAIT cell development and function. Cholic acid 7-sulfate is mainly used in the research of diabetes and MAIT cell-related immune regulation.