Co-stimulatory Immune Checkpoint Proteins

CD40 ligand or CD40L, also called CD154, is a protein that is primarily expressed on activated T cells and is a member of the TNF superfamily of molecules. It binds to CD40 (protein) on antigen-presenting cells (APC), which leads to many effects depending on the target cell type. In total CD40L has three binding partners: CD40, α5β1 integrin and αIIbβ3. CD154 acts as a costimulatory molecule and is particularly important on a subset of T cells called T follicular helper cells.

CD40L Protein, Rhesus macaque, Recombinant (His) is expressed in E. coli expression system with N-6xHis tag. The predicted molecular weight is 28.5 kDa and the accession number is P63304.

N/A. CD40 Ligand Protein, Rabbit, Recombinant (E. coli, His) is expressed in E. coli expression system with N-6xHis tag. The predicted molecular weight is 20.2 kDa and the accession number is G1SKP7.

T-cell-specific surface glycoprotein CD28, contains an Ig-like V-type domain. CD28 is one of the proteins expressed on T cells that provide co-stimulatory signals, which are required for their activation. It is the receptor for CD80 and CD86. When activated by Toll-like receptor ligands, the CD80 expression is upregulated in antigen presenting cells (APCs). The CD86 expression on antigen presenting cells is constitutive. CD28 is the only B7 receptor constitutively expressed on naive T cells. It involved in T-cell activation, the induction of cell proliferation and cytokine production and promotion of T-cell survival.

CD70, also named CD27 ligand (CD27L), is a type II transmembrane glycoprotein belonging to the TNF superfamily (TNFSF) and has been designated TNFSF7.  CD70 is a cytokine that binds to CD27. Plays a role in T-cell activation. Induces the proliferation of costimulated T-cells and enhances the generation of cytolytic T-cells. CD27 Ligand/CD70 Trimer Protein (Primary Amine Labeling), Human, Recombinant (His), Biotinylated is expressed in HEK293 mammalian cells with N-His tag. The predicted molecular weight is 51.8 kDa and the accession number is P32970-1.

CD28 is the receptor for CD80 (B7-1) and CD86 (B7-2) proteins.When activated by Toll-like receptor ligands, the CD80 expression is upregulated in antigen presenting cells (APCs). The CD86 expression on antigen presenting cells is constitutive. CD28 is the only B7 receptor constitutively expressed on naive T cells. CD28 Protein, Human/Cynomolgus/Rhesus macaque, Recombinant (His & Avi), Biotinylated is expressed in HEK293 mammalian cells with N-His-Avi tag. The predicted molecular weight is 18.2 kDa and the accession number is P10747.

B7-H3, a member of the B7 family of immunomodulatory molecules, is overexpressed in a wide range of solid cancers.B7-H3 binds to activated T cells via an as yet unidentified receptor. In assays using sub-optimal amount so anti-CD3 stimulation, 2Ig‑B7‑H3 enhances T cell proliferation, T cell interferon-gamma (IFN-gamma) production, and cytotoxic T cells induction. B7-H3 Protein, Human, Recombinant (aa 29-245, hFc) is expressed in HEK293 mammalian cells with C-hFc tag. The predicted molecular weight is 50.1 kDa and the accession number is Q5ZPR3-2.

CD27 antigen is also known as CD27L receptor, T-cell activation antigen CD27, Tumor necrosis factor receptor superfamily member 7, T14 and TNFRSF7. In humans, it is encoded by the CD27 gene. CD27 is a single-pass type I membrane protein with 3 TNFR-Cys repeats. It is a member of the TNF-receptor superfamily and is required for generation and long-term maintenance of T cell immunity. It binds to ligand CD70, and plays a key role in regulating B-cell activation and immunoglobulin synthesis. It plays a role in survival of activated T-cells and apoptosis through association with SIVA1.

GITR (glucocorticoid-induced tumor necrosis factor receptor), also known as AITR and TNFRSF18, is a 40 kDa transmembrane glycoprotein that functions in immune regulation.GIRT is a receptor for TNFSF18. Seems to be involved in interactions between activated T-lymphocytes and endothelial cells and in the regulation of T-cell receptor-mediated cell death. Mediated NF-kappa-B activation via the TRAF2/NIK pathway. GITR/TNFRSF18 Protein, Human, Recombinant (aa 26-161, His) is expressed in HEK293 mammalian cells with C-His tag. The predicted molecular weight is 15.4 kDa and the accession number is Q9Y5U5-1.

ILDR2 is a member of the B7-like family of proteins that regulate T cell activity, is also a known endoplasmic reticulum molecule that regulates lipid homeostasis. The human ILDR2 lumenal domain shares a 99% and 98% homology with the mouse and rat respectively. The human gene encoding ILDR2 is located in a region on Chr1q23–25 that has been associated with type 2 diabetes. ILDR2 plays critical roles in hepatic clearance of lipoproteins and in lipid homeostasis. ILDR2 regulates human dendritic cells (DC2 cells, a subpopulation of polarized DCs that promotes Th2 differentiation). Recent publications reported that ILDR2 displayed negative regulatory functions on human and mouse T cells in various experimental systems. Fusion protein of ILDR2 lumenal domain with an Fc fragment, displays therapeutic effects in collagen-induced arthritis (CIA), a mouse model of rheumatoid arthritis (RA). ILDR2 represents a novel B7-like ligand that exerts negative immune modulation via interaction with a putative counterpart receptor expressed on activated T cells.

B7-H3, a member of the B7 family of immunomodulatory molecules, is overexpressed in a wide range of solid cancers.B7-H3 binds to activated T cells via an as yet unidentified receptor. In assays using sub-optimal amount so anti-CD3 stimulation, 2Ig‑B7‑H3 enhances T cell proliferation, T cell interferon-gamma (IFN-gamma) production, and cytotoxic T cells induction. B7-H3 (4Ig) /B7-H3b Protein, Human, Recombinant (His & Avi) is expressed in HEK293 mammalian cells with C-His-Avi tag. The predicted molecular weight is 49.5 kDa and the accession number is Q5ZPR3-1.

OX40/TNFRSF4 Protein, Mouse, Recombinant (His) is expressed in HEK293 mammalian cells with C-6xHis tag. The predicted molecular weight is 40 KDa and the accession number is P47741.

Tumor necrosis factor receptor superfamily, member 4 (TNFRSF4), also known as CD134 and OX40 receptor. OX40 is a secondary co-stimulatory immune checkpoint molecule, expressed after 24 to 72 hours following activation; its ligand, OX40L, is also not expressed on resting antigen presenting cells, but is following their activation. OX40/TNFRSF4 Protein, Mouse, Recombinant (His & Avi) is expressed in HEK293 mammalian cells with C-His-Avi tag. The predicted molecular weight is 24.2 kDa and the accession number is P47741.

CD28 is the receptor for CD80 (B7-1) and CD86 (B7-2) proteins.When activated by Toll-like receptor ligands, the CD80 expression is upregulated in antigen presenting cells (APCs). The CD86 expression on antigen presenting cells is constitutive. CD28 is the only B7 receptor constitutively expressed on naive T cells. CD28 Protein, Canine, Recombinant (His) is expressed in HEK293 mammalian cells with C-His tag. The predicted molecular weight is 16.7 kDa and the accession number is Q9GKP3.

CD155 is a cell surface adhesion molecule functioning in tumor cell migration, invasion, and metastasis, and not surprisingly, is also designated as a common tumor-associated antigen. CD155 is also recognized by NK cells to induce their cytotoxicity. CD155 is also commonly referred to as the poliovirus receptor, or PVR.

4-1BB Ligand/TNFSF9 Protein, Human, Recombinant (His & Flag) is expressed in HEK293 mammalian cells with N-6xHis-Flag tag. The predicted molecular weight is 30 KDa and the accession number is P41273.

Tumor necrosis factor receptor superfamily, member 4 (TNFRSF4), also known as CD134 and OX40 receptor. OX40 is a secondary co-stimulatory immune checkpoint molecule, expressed after 24 to 72 hours following activation; its ligand, OX40L, is also not expressed on resting antigen presenting cells, but is following their activation. OX40/TNFRSF4 Protein, Human, Recombinant (aa 29-216, His & Avi), Biotinylated is expressed in HEK293 mammalian cells with C-His-Avi tag. The predicted molecular weight is 23.2 kDa and the accession number is P43489.

GITR (glucocorticoid-induced tumor necrosis factor receptor), also known as AITR and TNFRSF18, is a 40 kDa transmembrane glycoprotein that functions in immune regulation.GIRT is a receptor for TNFSF18. Seems to be involved in interactions between activated T-lymphocytes and endothelial cells and in the regulation of T-cell receptor-mediated cell death. Mediated NF-kappa-B activation via the TRAF2/NIK pathway. GITR/TNFRSF18 Protein, Mouse, Recombinant (aa 22-153, His) is expressed in HEK293 mammalian cells with C-His tag. The predicted molecular weight is 15.2 kDa and the accession number is Q8C4K3.

CD40 Protein, Cynomolgus, Recombinant (His) is expressed in HEK293 mammalian cells with C-6xHis tag. The predicted molecular weight is 28-30 KDa and the accession number is G7PG38.

CD48 is a GPI-linked protein in the CD2 family of immunoglobulin superfamily proteins. CD48 is expressed on most lineage-committed hematopoietic cells but not on hematopoietic stem cells or multipotent hematopoietic progenitors. Among dendritic cells (DC), CD48 is selectively expressed on circulating myeloid DC and resident bone marrow and thymus DC. CD2, 2B4, and heparan sulfate function as CD48 ligands. CD48 is competent to transduce signals and can also trigger signaling through CD2 or 2B4. CD48 expressed on NK cells is coactivating, whereas CD48 expressed on other cell types inhibits NK cell activation.

4-1BB Ligand/TNFSF9 Protein, Mouse, Recombinant (His) is expressed in HEK293 mammalian cells with His tag. The predicted molecular weight is 25 kDa and the accession number is P41274.

CD70 Protein, Human, Recombinant (hFc) is expressed in HEK293 mammalian cells with hFc tag. The predicted molecular weight is 45.5 kDa and the accession number is A0A0U5JA32.

CD226 Protein, Rat, Recombinant (His) is expressed in HEK293 mammalian cells with His tag. The predicted molecular weight is 28 kDa and the accession number is A6K5P0.

CD155/PVR Protein, Mouse, Recombinant (His) is expressed in HEK293 mammalian cells with His tag. The predicted molecular weight is 28 kDa and the accession number is Q8K094.

CD70 Protein, Rat, Recombinant (hFc) is expressed in HEK293 mammalian cells with hFc tag. The predicted molecular weight is 45 kDa and the accession number is D3ZGU3.

CD40 Ligand Protein, Mouse, Recombinant (hFc) is expressed in HEK293 mammalian cells with hFc tag. The predicted molecular weight is 44.4 kDa and the accession number is P27548.

CD27/TNFRSF7 Protein, Mouse, Recombinant (His) is expressed in HEK293 mammalian cells with His tag. The predicted molecular weight is 19.6 kDa and the accession number is P41272.

CD27/TNFRSF7 Protein, Mouse, Recombinant (His & hFc) is expressed in HEK293 mammalian cells with His and hFc tag. The predicted molecular weight is 46.2 kDa and the accession number is P41272.

CD48 Protein, Rat, Recombinant (His) is expressed in HEK293 mammalian cells with His tag. The predicted molecular weight is 23.9 kDa and the accession number is P10252.

4-1BB Ligand/TNFSF9 Protein, Rat, Recombinant (hFc) is expressed in HEK293 mammalian cells with hFc tag. The predicted molecular weight is 50.9 kDa and the accession number is Q80WE6.

OX40L/TNFSF4 Protein, Cynomolgus, Recombinant (mFc) is expressed in HEK293 mammalian cells with mFc tag. The predicted molecular weight is 42 kDa and the accession number is F7FL80.

The three butyrophilin BTN3A molecules, BTN3A1, BTN3A2, and BTN3A3, are members of the B7/butyrophilin-like group of Ig superfamily receptors, which modulate the function of T cells. BTN3A2 is overexpressed in gastric tumors, and deletion of BTN3A2 inhibited proliferation, migration, and invasion of gastric cancer cells. The butyrophilin 3 (BTN3) receptors are implicated in the T lymphocytes regulation and present a wide plasticity in mammals. A thorough phylogenetic analysis reveals a concerted evolution of BTN3 characterized by a strong and recurrent homogenization of the region encoding the signal peptide and the immunoglobulin variable (IgV) domain in Hominoids, where the sequences of BTN3A1 or BTN3A3 are replaced by BTN3A2 sequence.

OX40L/TNFSF4 Protein, Mouse, Recombinant (rFc) is expressed in HEK293 mammalian cells with rFc tag. The predicted molecular weight is 44.4 kDa and the accession number is B6DXE3.

CD70 Protein, Human, Recombinant (rFc) is expressed in HEK293 mammalian cells with rFc tag. The predicted molecular weight is 44.6 kDa and the accession number is A0A0U5JA32.

CD40 Protein, Canine, Recombinant (His) is expressed in HEK293 mammalian cells with His tag. The predicted molecular weight is 20.5 kDa and the accession number is Q7YRL5.

4-1BB/CD137/TNFRSF9 Protein, Human, Recombinant (His) is expressed in HEK293 mammalian cells with His tag. The predicted molecular weight is 18.8 kDa and the accession number is Q07011.

CD27/TNFRSF7 Protein, Human, Recombinant (His), Biotinylated is expressed in Baculovirus insect cells with His tag. The predicted molecular weight is 20.77 kDa and the accession number is P26842.

ICOS Protein, Rat, Recombinant (hFc) is expressed in HEK293 mammalian cells with hFc tag. The predicted molecular weight is 40.7 kDa and the accession number is Q9R1T7-1.

OX40/TNFRSF4 Protein, Rhesus, Recombinant (hFc) is expressed in HEK293 mammalian cells with hFc tag. The predicted molecular weight is 47 kDa and the accession number is A0A5F7ZEC3.

CD28 Protein, Rat, Recombinant (His) is expressed in HEK293 mammalian cells with His tag. The predicted molecular weight is 16.4 kDa and the accession number is A6IPD4.

4-1BB/CD137/TNFRSF9 Protein, Mouse, Recombinant (soluble form, rFc) is expressed in HEK293 mammalian cells with rFc tag. The predicted molecular weight is 46.1 kDa.

CD40 Ligand Protein, Rhesus, Recombinant (hFc) is expressed in HEK293 mammalian cells with hFc tag. The predicted molecular weight is 44.7 kDa and the accession number is A0A8J8XRR8.

B7-H6 Protein, Human, Recombinant (His) is expressed in HEK293 mammalian cells with His tag. The predicted molecular weight is 28.1 kDa and the accession number is Q68D85.

4-1BB Ligand/TNFSF9 Protein, Cynomolgus, Recombinant (hFc), Biotinylated is expressed in HEK293 mammalian cells with hFc tag. The predicted molecular weight is 47.8 kDa and the accession number is XP_015296398.1.

CD86 Protein, Human, Recombinant (His & Avi), Biotinylated is expressed in HEK293 mammalian cells with His and Avi tag. The predicted molecular weight is 28.42 kDa and the accession number is NP_008820.4.

CD28 Protein, Human, Recombinant (hFc & Avi), Biotinylated is expressed in HEK293 mammalian cells with hFc and Avi tag. The predicted molecular weight is 43.7 kDa and the accession number is P10747-1.

CD226 Protein, Human, Recombinant (His), Biotinylated is expressed in HEK293 mammalian cells with His tag. The predicted molecular weight is 27.4 kDa and the accession number is Q15762.

4-1BB/CD137/TNFRSF9 Protein, Human, Recombinant (soluble CD137, His) is expressed in HEK293 mammalian cells with His tag. The predicted molecular weight is 15.70 kDa and the accession number is Q07011.

CD40 Protein, Human, Recombinant (hFc & Avi), Biotinylated is expressed in HEK293 mammalian cells with hFc and Avi tag. The predicted molecular weight is 47.7 kDa and the accession number is A0A0S2Z3C7.

B7-1 Protein, Human, Recombinant (His & Avi), Biotinylated is expressed in HEK293 mammalian cells with His and Avi tag. The predicted molecular weight is 27.12 kDa and the accession number is A0N0P2.