Human CD14 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.
Detection of Human CD14 by Western Blot. Western blot shows lysates of THP‑1 human acute monocytic leukemia cell line untreated (-) or treated (+) with 200 nM of PMA for 24 hours and 10 ug/mL of LPS for 3 hours. PVDF membrane was probed with 1 µg/mL of Sheep Anti-Human CD14 Polyclonal Antibody (Catalog # AB383) followed by HRP-conjugated Anti-Sheep IgG Secondary Antibody (HAF016). A specific band was detected for CD14 at approximately 55 kDa (as indicated). This experiment was conducted under non-reducing conditions and using Western Blot Buffer Group 1.
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.
CD14 is a 55 kDa cell surface glycoprotein that is preferentially expressed on monocytes/macrophages. The human CD14 cDNA encodes a 375 amino acid (aa) residue precursor protein with a 19 aa signal peptide and a C-terminal hydrophobic region characteristic for glycosylphosphatidyinositol (GPI)-anchored proteins. Human CD14 has four potential N-linked glycosylation sites and also bears O-linked carbohydrates. The amino acid sequence of human CD14 is approximately 65% identical with the mouse, rat, rabbit, and bovine proteins. CD14 is a pattern recognition receptor that binds lipopolysaccharides (LPS) and a variety of ligands derived from different microbial sources. The binding of CD14 with LPS is catalyzed by LPS-binding protein (LBP). The toll-like-receptors have also been implicated in the transduction of CD14-LPS signals. Similar to other GPI-anchored proteins, soluble CD14 can be released from the cell surface by phosphatidyinositol-specific phospholipase C. Soluble CD14 has been detected in serum and body fluids. High concentrations of soluble CD14 have been shown to inhibit LPS-mediated responses. However, soluble CD14 can also potentiate LPS response in cells that do not express cell surface CD14.
- Wright, S.D. et al. (1990) Science 249:1431.
- Pugin, J. et al. (1993) Proc. Natl. Acad. Sci. USA 90:2744.
- Beutler, B. (2000) Current Opinion in Immunology 12:20.
- Stelter, F. (2000) Chem. Immunol. 74:25.
Citations for Human CD14 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 - 2
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Dermal CD14(+) Dendritic Cell and Macrophage Infection by Dengue Virus Is Stimulated by Interleukin-4.
Authors: Schaeffer E, Flacher V, Papageorgiou V, Decossas M, Fauny J, Kramer M, Mueller C
J Invest Dermatol, 2015;135(7):1743-51.
Sample Types: Whole Cells
Applications: Flow Cytometry
Induction of keratinocyte growth factor 1 Expression by lipopolysaccharide is regulated by CD-14 and toll-like receptors 2 and 4.
Authors: Putnins EE, Sanaie AR, Wu Q
Infect. Immun., 2002;70(12):6541-8.
Sample Types: Cell Lysates
Applications: Western Blot
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