TY - JOUR KW - Antibodies, Monoclonal KW - Antigens, Differentiation, Myelomonocytic KW - Blood Platelets KW - Cell Differentiation KW - Endothelium KW - Flow Cytometry KW - Humans KW - Immunoenzyme Techniques KW - Interferon Type I KW - Interferon-gamma KW - Macrophages KW - Molecular Weight KW - Monocytes AU - CabaƱas C AU - Sanchez-Madrid F AU - Bellon T AU - Figdor C G AU - Te Velde A A AU - FERNANDEZ J M AU - Acevedo A AU - Bernabeu C AB -

The monoclonal antibody HC1/6 generated against phorbol 12-myristate 13-acetate-treated U-937 cells recognizes a new cell surface antigen with a broad relative molecular mass ranging from 100 to 150 kDa. This antigen is also present on monocytes, platelets and endothelial cells and is weakly expressed by granulocytes. In contrast, it is absent from T, B and erythroblastoid cells. The antigen HC1/6 is also expressed by normal tissue macrophages in tonsil, lung and kidney, as well as in skin biopsies from pathologies such as sarcoidosis and lepromatous leprosy. The expression of the HC1/6 antigen is increased up to 5-fold when U-937 (promonocytic) and HL-60 (myelomonocytic) cell lines are stimulated with phorbol 12-myristate 13-acetate. Conversely, the expression of the HC1/6 antigen is down-regulated in monocytes upon treatment with interferon-gamma. These findings are discussed in relation with other myeloid cell surface markers.

BT - European journal of immunology C1 - http://www.ncbi.nlm.nih.gov/pubmed/2506060?dopt=Abstract DA - 1989 Aug DO - 10.1002/eji.1830190804 IS - 8 J2 - Eur. J. Immunol. LA - eng N2 -

The monoclonal antibody HC1/6 generated against phorbol 12-myristate 13-acetate-treated U-937 cells recognizes a new cell surface antigen with a broad relative molecular mass ranging from 100 to 150 kDa. This antigen is also present on monocytes, platelets and endothelial cells and is weakly expressed by granulocytes. In contrast, it is absent from T, B and erythroblastoid cells. The antigen HC1/6 is also expressed by normal tissue macrophages in tonsil, lung and kidney, as well as in skin biopsies from pathologies such as sarcoidosis and lepromatous leprosy. The expression of the HC1/6 antigen is increased up to 5-fold when U-937 (promonocytic) and HL-60 (myelomonocytic) cell lines are stimulated with phorbol 12-myristate 13-acetate. Conversely, the expression of the HC1/6 antigen is down-regulated in monocytes upon treatment with interferon-gamma. These findings are discussed in relation with other myeloid cell surface markers.

PY - 1989 SP - 1373 EP - 8 T2 - European journal of immunology TI - Characterization of a novel myeloid antigen regulated during differentiation of monocytic cells. VL - 19 SN - 0014-2980 ER -