| Two new monoclonal antibodies (LN-1, LN-2) reactive in B5 formalin-fixed, paraffin-embedded tissues with follicular center and mantle zone human B lymphocytes and derived tumors. | |
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MedLine Citation:
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PMID: 6376628 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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Two monoclonal antibodies (LN-1, LN-2) reactive with B lymphocytes in B5 formalin-fixed, paraffin-embedded tissue sections have been produced by utilizing cell extracts from pokeweed mitogen-stimulated peripheral blood lymphocytes and diffuse histiocytic lymphoma SU-DHL-4 cells, respectively. Both monoclonal antibodies were initially identified by indirect immunofluorescence screening techniques on paraformaldehyde-acetone-fixed cell preparations. Specificity screens with 36 well-characterized human lymphoma and leukemia cell lines showed that both LN-1 and LN-2 stained cell lines of B cell lineage but were unreactive with those of T cell or, with one exception, myeloid derivation. Null cell acute lymphoblastic leukemia cell lines were found to be LN-2+ but LN-1-. The B cell specificity of these reagents was confirmed on 15 lymphoma and 17 leukemia biopsy specimens by using indirect immunofluorescence techniques. Immunoperoxidase staining of sections from B5-fixed, paraffin-embedded human lymphoid tissues showed that LN-1 bound to the cell membrane and cytoplasm of germinal center cells whereas LN-2 stained the nuclear membrane and cytoplasm of germinal center and mantle zone B lymphocytes as well as interfollicular histiocytes and thymic medullary dendritic cells. Both monoclonal antibodies failed to stain cortical thymocytes, lymph node T cells, and peripheral blood T and myeloid cells. Immunoperoxidase staining of 20 nonlymphoid human organs and tissues revealed that LN-1 reacted positively with red blood cell precursors of the bone marrow, ciliated epithelial cells of the bronchus, distal tubular cells of the kidney, and ductal cells from several organs including the breast and prostate. In contrast, LN-2 was unreactive with all human nonlymphoid organs and tissues including the bone marrow. Indirect immunofluorescence staining of a panel of 26 solid tumor cells lines showed that LN-1 was reactive with the majority of epithelium-derived cell lines, glioblastomas, and astrocytomas but was unreactive with neuroblastomas, small cell carcinoma of the lung, and sarcomas. LN-2 was unreactive with 25 of 26 of the solid tumor cell lines by these techniques. Immunobiochemical studies have shown that LN-1 recognizes a cell surface sialoantigen whereas LN-2 is directed against a 35,000 dalton nuclear membrane protein. Because of their high specificity for B cell tumors and their ability to stain B5-fixed, paraffin-embedded tissues, LN-1 and LN-2 are useful reagents for the diagnosis and classification of the human lymphomas and leukemias. |
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Authors:
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A L Epstein; R J Marder; J N Winter; R I Fox |
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Publication Detail:
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Type: Journal Article; Research Support, Non-U.S. Gov't; Research Support, U.S. Gov't, P.H.S. |
Journal Detail:
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Title: Journal of immunology (Baltimore, Md. : 1950) Volume: 133 ISSN: 0022-1767 ISO Abbreviation: J. Immunol. Publication Date: 1984 Aug |
Date Detail:
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Created Date: 1984-08-20 Completed Date: 1984-08-20 Revised Date: 2009-11-19 |
Medline Journal Info:
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Nlm Unique ID: 2985117R Medline TA: J Immunol Country: UNITED STATES |
Other Details:
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Languages: eng Pagination: 1028-36 Citation Subset: AIM; IM |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Antibodies, Monoclonal
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diagnostic use*,
immunology Antigen-Antibody Reactions Antigens, Neoplasm / immunology B-Lymphocytes / cytology, immunology*, pathology Cell Differentiation Cell Line Cell Transformation, Neoplastic / pathology Chemical Precipitation Fluorescent Antibody Technique Humans Leukemia / pathology* Lymph Nodes / cytology, pathology Lymphoma / pathology* Spleen / cytology, pathology |
| Grant Support | |
ID/Acronym/Agency:
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R01 CA30621/CA/NCI NIH HHS |
| Chemical | |
Reg. No./Substance:
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0/Antibodies, Monoclonal; 0/Antigens, Neoplasm |
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