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Open AccessJournal ArticleDOI

Lysozyme synthesis by established human and murine histiocytic lymphoma cell lines.

Peter Ralph, +2 more
- 01 Jun 1976 - 
- Vol. 143, Iss: 6, pp 1528-1533
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TLDR
Among murine cell lines, lysozyme was produced by three histiocytic lymphoma or macrophage lines, which mediate antibody- dependent phagocytosis and cytolysis, and a spontaneous lymphoma and an Abelson leukemia virus-induced lymphoma.
Abstract
A human cell line established in culture from a histiocytic lymphoma patient synthesizes and secretes the monocyte-granulocyte specific enzyme lysozyme. 18 other human cell lines with characteristics of T-lymphocyte, B-lymphocyte, Burkitt's lymphoma, non-Burkitt's lymphoma, myeloma, and bone marrow epithelial cells were not associated with lysozyme. Among murine cell lines, lysozyme was produced by (a) three histiocytic lymphoma or macrophage lines, which mediate antibody-dependent phagocytosis and cytolysis; (b) myelomonocytic leukemia line which also secretes myeloid colony-stimulating factor; and (c) a spontaneous lymphoma and an Abelson leukemia virus-induced lymphoma. Lysozyme-negative lines include another Abelson lymphoma, myelomas, T lymphomas, and mastocytoma.

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Journal ArticleDOI

Establishment and characterization of a human histiocytic lymphoma cell line (U‐937)

TL;DR: The histiocytic origin of the cell line was shown by its capacity for lysozyme production and the strong esterase activity of the cells, and it was concluded that the U‐937 is a neoplastic, histuocytic cell line.
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A new rapid and simple non-radioactive assay to monitor and determine the proliferation of lymphocytes: an alternative to [3H]thymidine incorporation assay

TL;DR: The pattern of concanavalin A (ConA) or anti-CD3 antibody-induced proliferative response of murine lymphocytes as assessed by Alamar Blue was similar to that of a [3H]thymidine assay, which allows daily monitoring of proliferation without compromising the sterility of cultures.
Journal ArticleDOI

Characterization of a monoclonal antibody directed against mouse macrophage and lymphocyte Fc receptors.

TL;DR: The ability of the hybridoma IgG to inhibit mouse FcRII was independent of the major histocompatibility complex and the monoclonal 2.4G2 IgG antigenic determinant was not present on rat, guinea pig, rabbit, or human F cR-bearing cells.
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Increased superoxide anion production by immunologically activated and chemically elicited macrophages.

TL;DR: It is concluded that the phagocytosis- associated respiratory burst is significantly enhanced in mononuclear phagocytes obtained ai~r chemical inflammation or BCG infection.
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Regulation of scavenger receptor CD163 expression in human monocytes and macrophages by pro- and antiinflammatory stimuli.

TL;DR: The results demonstrate that CD163 expression in monocytes/macrophages is regulated by proinflammatory and antiinflammatory mediators, implying a functional role of CD163 in the antiinflammatory response of monocytes.
References
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Journal ArticleDOI

Human chronic myelogenous leukemia cell-line with positive Philadelphia chromosome.

TL;DR: This CML cell-line represents a unique source of CML cells with meaningful indicators of malignancy for clinical and experimental studies.

Human chronic myelogenous leukemia cell-line with positive Philadelphia

CB Lozzio, +1 more
TL;DR: This CML cell-line represents a unique source of CML cells with meaningful indicators of malignancy for clinical and experimental studies.
Journal ArticleDOI

Serum and urinary lysozyme (muramidase) in monocytic and monomyelocytic leukemia

TL;DR: Present evidence indicates that ly sozyme is the principal, if not the sole, product of the proliferating monocytes in monocytic and monomyelocytic leukemia, and quantitation of serum and urine lysozyme should be a useful diagnostic procedure for these leukemias.
Journal Article

Reticulum cell sarcoma: an effector cell in antibody-dependent cell-mediated immunity.

TL;DR: A transplantable, murine reticulum cell sarcoma is described which exhibits the cytologic, adherence, and phagocytic properties of macrophages and mediate antibody-dependent cellular immunity as assayed by release of radioactivity from 51Cr-labeled erythrocytes.
Journal ArticleDOI

An EBV-genome-negative cell line established from an American Burkitt lymphoma; receptor characteristics. EBV infectibility and permanent conversion into EBV-positive sublines by in vitro infection.

TL;DR: Permanent EBV conversion of the Ra No. 1 cell did not appear to change the cellular controls, as judged by the unchanged sensitivity of the cell to viral antigen (EA, viral capsid antigen) induction by P3HR-1 virus superinfection.
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