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| 製品# | サイズ | 数量 | 価格 | 在庫 |
|---|---|---|---|---|
| 86791T | 1 Kit (9 x 20 microliters) |
|
| Product Includes | Quantity | Applications | Reactivity | MW(kDa) | Isotype |
|---|---|---|---|---|---|
| CD14 (D7A2T) Rabbit mAb (IHC Formulated) 75181 | 20 µl |
|
H Mk | Rabbit IgG | |
| CD11b/ITGAM (D6X1N) Rabbit mAb 49420 | 20 µl |
|
H Mk | 170 | Rabbit IgG |
| CD68 (D4B9C) XP® Rabbit mAb 76437 | 20 µl |
|
H Mk | Rabbit IgG | |
| CD163 (D6U1J) Rabbit mAb 93498 | 20 µl |
|
H Mk | 160, 170 | Rabbit IgG |
| CD206/MRC1 (E2L9N) Rabbit mAb 91992 | 20 µl |
|
H | 190-250 | Rabbit IgG |
| CSF-1R/M-CSF-R (E4T8Z) Rabbit mAb 28917 | 20 µl |
|
H | 140-200 | Rabbit IgG |
| Arginase-1 (D4E3M™) XP® Rabbit mAb 93668 | 20 µl |
|
H M R | 40 | Rabbit IgG |
| MHC Class II (LGII-612.14) Mouse mAb 68258 | 20 µl |
|
H | 25-35, 50-65 | Mouse IgG1 |
| CD15/SSEA1 (MC480) Mouse mAb 4744 | 20 µl |
|
H M | N/A | Mouse IgM |
製品情報
Monoclonal antibodies are produced by immunizing animals with synthetic peptides corresponding to residues surrounding Pro319 of human CD14 protein or Val47 of human arginase-1 protein, or with recombinant protein specific to human CD68 protein, human CD163 protein, human CD206/MRC1 protein, the carboxy terminus of human M-CSF receptor protein, or the amino terminus of human CD11b/ITGAM protein. CD15/SSEA1 (MC480) Mouse mAb is produced by immunizing animals with F9 teratoma cells (X-irradiated). MHC Class II (LGII-612.14) Mouse mAb is produced by immunizing animals with cultured human B lymphoid cells treated with IFN-gamma.
A combination of multiple biomarkers are required to characterize the phenotype of myeloid cell lineages. Cluster of differentiation molecule 14 (CD14) is a leucine-rich repeat-containing pattern recognition receptor with expression largely restricted to the monocyte/macrophage cell lineage (1), but can be unregulated on polymorphonuclear as well as nonmyeloid cells such as B cells and gingival fibroblasts (2,3). CD11b (Integrin alpha M or ITGAM) is a transmembrane protein forming heterodimers that are composed of α and β subunits (4). CD11b is expressed by, and commonly used as a marker for myeloid lineage cells, including neutrophils, monocytes, macrophages, dendritic cells, and microglia (5), but has also been detected on a subset of B cells (6-8). CD68 (macrosialin) is a heavily glycosylated transmembrane protein that is expressed by and commonly used as a marker for monocytes and macrophages (9,10), but there is also evidence of non-myeloid cell expression (11). The CD15 carbohydrate epitope is preferentially expressed in mature human neutrophils, monocytes, and all myeloid cells from the promyelocyte stage onwards, making it a useful cell surface marker (12-14). It is also expressed in some tissues, such as epithelial cells of intestinal tissues (15,16), and in certain neurons and glial cells in the central nervous system (17).
CD163 is a transmembrane scavenger receptor expressed on the macrophage surface. It has 9 B-type SRCR extracellular domains mediating serum haptoglobin clearing/endocytosis, pathogen binding and signal transduction, and calcium binding (18,19). The mannose receptor (CD206/MR/CLEC13D/MMR/MRC1/Macrophage mannose receptor 1) is an endocytic receptor expressed by populations of dendritic cells, macrophages, and nonvascular endothelium (20). CD206/MRC1 receptor functions include a role in antigen cross-presentation, clearance of endogenous proteins, pathogen detection and trafficking through lymphatic vessels (21-24). Macrophage-colony stimulating factor (M-CSF, CSF-1) receptor is an integral membrane tyrosine kinase encoded by the c-fms proto-oncogene. M-CSF receptor is expressed in monocytes (macrophages and their progenitors) and drives growth and development of this blood cell lineage (25,26). CD163, CD206, and M-CSF receptors are used as surface markers of M2 type macrophages, including M2 type tumor associated macrophages (TAMs), which facilitate cancer progression by secreting cytokines to promote angiogenesis, immunosuppression, and metastasis (20,27,28). Arginase-1 catalyzes the final step of the urea cycle converting L-arginine to L-ornithine and urea (29). Myeloid-derived suppressor cells express high levels of arginase-1, increasing the catabolism of L-arginine resulting in L-arginine depletion in the inflammatory microenvironment of cancer. The reduced availability of L-arginine suppresses T cell proliferation and function and thus contributes to tumor progression (30,31).
Major histocompatibility complex class II (MHC class II) molecules are heterodimeric, transmembrane glycoproteins expressed on the surface of antigen-presenting cells such as macrophages, dendritic cells, and B cells. Expression can also be induced through interferon-γ signaling (32). Prior to being displayed on the cell membrane, MHC class II molecules are loaded with exogenous peptide antigens approximately 15-24 amino acids in length that were derived from endocytosed extracellular proteins digested in the lysosome. Antigen-presentation through MHC class II is required for T cell activation during the immune response to extracellular pathogens (33). High expression of MHC class II on myeloid cell lineages is used as a surface marker of M1 type macrophages, including M1 type TAMs, which can assist in tumor eradication by secreting cytokines to activate anti-tumor immune responses, and inhibit angiogenesis and metastasis (27,28).
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