Human CD45 Biotinylated Antibody Summary
Please Note: Optimal dilutions should be determined by each laboratory for each application. General Protocols are available in the Technical Information section on our website.
CD45 in human PBMCs. CD45 was detected in immersion fixed human peripheral blood mononuclear cells (PBMCs) using Mouse Anti-Human CD45 Biotinylated Monoclonal Antibody (Catalog # BAM1430) at 25 µg/mL for 3 hours at room temperature. Cells were stained using the NorthernLights™ 557-conjugated Streptavidin (red; Catalog # NL999) and counterstained with DAPI (blue). Specific staining was localized to plasma membrane. View our protocol for Fluorescent ICC Staining of Cells on Coverslips.
Preparation and Storage
- 12 months from date of receipt, -20 to -70 °C as supplied.
- 1 month, 2 to 8 °C under sterile conditions after reconstitution.
- 6 months, -20 to -70 °C under sterile conditions after reconstitution.
CD45, previously called LCA (leukocyte common antigen), T200, or Ly5 in mice, is member C of the class 1 (receptor‑like) protein tyrosine phosphatase family (PTPRC) (1, 2). It is a variably glycosylated 180‑220 kDa transmembrane protein that is abundantly expressed on all nucleated cells of hematopoietic origin (1‑3). CD45 has several isoforms, expressed according to cell type, developmental stage and antigenic exposure (1‑5). The longest form, CD45RABC (called B220 in mouse), is expressed on B lymphocytes (5). The CD45RABC cDNA encodes 1304 amino acids (aa), including a 23 aa signal sequence, a 552 aa extracellular domain containing the splicing region, a cysteine‑rich region and two fibronectin type III domains, a 22 aa transmembrane sequence, and a 707 aa cytoplasmic domain that contains two phosphatase domains, D1 and D2. Only D1 has phosphatase activity. CD45R0 is the shortest form, lacking exons 4, 5 and 6 which encode aa 32‑191. It is expressed on memory cells, while intermediate sizes are expressed on other T cells (3, 4, 6). CD45 has been best studied in T cells, where it determines T cell receptor signaling thresholds (3, 6‑8). CD45 is moved into or out of the immunological synapse (IS) membrane microdomain depending on the relative influence of interaction with the extracellular galectin lattice or the intracellular actin cytoskeleton (9, 10). Galectin interaction can be fine‑tuned by varying usage of the heavily
O-glycosylated spliced regions and sialylation of N‑linked carbohydrates (4, 9). Within the IS, CD45 dephosphorylates and negatively regulates the Src family kinase, Lck (8‑10). In other leukocytes, CD45 influences differentiation and links immunoreceptor signaling with cytokine secretion and cell survival, partially overlapping in function with DEP‑1/CD148 (11‑14). CD45 deletion causes in severe immunodeficiency, while point mutations may be associated with autoimmune disorders (6, 7).
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Citations for Human CD45 Biotinylated Antibody
R&D Systems personnel manually curate a database that contains references using R&D Systems products. The data collected includes not only links to publications in PubMed, but also provides information about sample types, species, and experimental conditions.
Citations: Showing 1 - 5
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Molecular signatures of circulating melanoma cells for monitoring early response to immune checkpoint therapy
Authors: X Hong, RJ Sullivan, M Kalinich, TT Kwan, A Giobbie-Hu, S Pan, JA LiCausi, JD Milner, LT Nieman, BS Wittner, U Ho, T Chen, R Kapur, DP Lawrence, KT Flaherty, LV Sequist, S Ramaswamy, DT Miyamoto, M Lawrence, M Toner, KJ Isselbache, S Maheswaran, DA Haber
Proc. Natl. Acad. Sci. U.S.A., 2018;0(0):.
Sample Types: Whole Cells
Applications: Magnetic Collection
Expression of ?-globin by cancer cells promotes cell survival during blood-borne dissemination
Authors: Y Zheng, DT Miyamoto, BS Wittner, JP Sullivan, N Aceto, NV Jordan, M Yu, NM Karabacak, V Comaills, R Morris, R Desai, N Desai, E Emmons, JD Milner, RJ Lee, CL Wu, LV Sequist, W Haas, DT Ting, M Toner, S Ramaswamy, S Maheswaran, DA Haber
Nat Commun, 2017;8(0):14344.
Sample Types: Whole Blood
HER2 expression identifies dynamic functional states within circulating breast cancer cells
Sample Types: Whole Cells
Increased Susceptibility of Humanized NSG Mice to Panton-Valentine Leukocidin and Staphylococcus aureus Skin Infection.
Authors: Tseng C, Biancotti J, Berg B, Gate D, Kolar S, Muller S, Rodriguez M, Rezai-Zadeh K, Fan X, Beenhouwer D, Town T, Liu G
PLoS Pathog, 2015;11(11):e1005292.
Sample Types: Whole Tissue
Applications: IHC - Paraffin embedded
Independent, parallel pathways to CXCL10 induction in HCV-infected hepatocytes.
Authors: Brownell J, Wagoner J, Lovelace E, Thirstrup D, Mohar I, Smith W, Giugliano S, Li K, Crispe I, Rosen H, Polyak S
J Hepatol, 0;59(4):701-8.
Sample Types: Whole Cells
Applications: Cell selection
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