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H Burrichter

Publications and source records attributed to H Burrichter.

27 records · Page 2Linked to original sources
PubMed1984

Interleukin-1-like activity constitutively generated by Hodgkin derived cell lines. I. Measurement in a human lymphocyte co-stimulator assay.

Culture supernatants (CS) from Hodgkin derived cell lines have previously been shown to contain colony stimulating activity (CSF) for human cord blood cells, fetal bone marrow and fetal liver cells. In this study 3-day CS from four Hodgkin lines (L428, L538, L540, L591) and two sublines (L428KS, L428KSA) were examined for interleukin (IL) activity. None of the tested CS supported the growth of an IL-2 dependent murine T-cell line, suggesting that the Hodgkin lines do not produce significant amounts of IL-2. When crude 3-day CS from the various lines were assayed for IL-1-activity in the conventional murine thymocyte costimulator assay no or only borderline IL-1-activity was detectable. However, concentrated CS from L428KS exhibited IL-1-activity also in this assay as did lipopolysaccharide (LPS) induced human IL-1. Surprisingly, crude 3-day CS from all Hodgkin cell lines were capable of fully replacing the accessory cell requirement in ConA-induced lymphoproliferation assays of heavily monocyte-depleted human blood lymphocytes. The monocyte-depleted lymphocyte populations were obtained by 1 X g sedimentation at a sedimentation rate of 30.2 to 38.8 mm/hr (fraction IIIa and IIIb). These cells responded poorly to the T-cell mitogen ConA at 10 micrograms/ml and produced no IL-2. Addition of irradiated, autologous monocytes or of CS from the various Hodgkin cell lines quantitatively restored the ConA responsiveness and induced significant IL-2 production in the monocyte-depleted lymphocyte population, suggesting that Hodgkin lines constitutively secrete IL-1 or IL-1-like activity. A preliminary biochemical characterization (heat and pH stability, molecular weight range of 13-24 KD) supports the notion that the accessory cell replacing activity present in CS of Hodgkin cell lines is a type of human IL-1.

Animals↗
PubMed1983

[Properties of Hodgkin cell lines. Possible significance for pathophysiology and clinical medicine].

In the last three years, five permanently in-vitro growing cell cultures with malignant properties were established from tumour material of patients with histologically confirmed Hodgkin's disease. Four cell lines have been maintained in culture. L 428 had identical characteristics in every respect with Hodgkin and Sternberg-Reed cells, tested in-vivo on biopsy tissue. The other lines--L 538, L 540 and L 591 - had certain characteristics of Hodgkin and Sternberg-Reed cells with a number of markers, but were not fully congruent. All lines reacted with a heterologous antiserum against L 428, which selectively cross-reacted with Hodgkin and Sternberg-Reed cells in fresh biopsies. Two sublines, L 428 KS and L 428 KSA, were established from L 428 by modifying the culture medium. Tests on L 428 KS cells with conventional methods and with monoclonal antibodies demonstrated that this line carried antigens of myeloid cells; however, it could not be definitely placed into any haematopoetic line. Conditioned medium of L 428 and its sublines showed CSF activity (colony-stimulating factor) and suppression of cell-mediated cytolysis.

Acid Phosphatase↗
PubMed1983

Production of colony-stimulating factors by Hodgkin cell lines.

This work was performed with L 428, a cell line established in 1978 from a patient with Hodgkin's disease. These in vitro cells represent counterparts of in vivo Hodgkin and Sternberg-Reed cells. L 428 and its derived sublines produce a significant amount of colony-stimulating factor (CSF) compared to standard preparations of CSF (fetal liver conditioned medium). Hodgkin-cell-derived conditioned medium, tested in cord-blood assays and in semi-solid agar systems, induced myeloproliferation predominantly. Production of CSF is independent of fetal calf serum concentration in the cultures. L 428-conditioned medium could provide an excellent source for characterization and purification of granulocyte CSF.

Cell Line↗
PubMed1983

Hodgkin's disease cell lines: characteristics and biological activities.

In the last 4 years we have established five long-term cultures from tumor material of Hodgkin's disease. The in vitro cells have malignant characteristics and represent the in vivo Hodgkin- and Sternberg-Reed-cells as shown by the identity of multiple properties. Common immunological, functional, and morphological assays did not characterize the in vitro cells as a known cell type of lymphoid, myeloid, or monocytoid tissue. The in vitro Hodgkin's disease cells are biologically active by producing factors involved in regulation and promotion of immunological response and granulopoiesis. The relevance of the findings for pathogenesis and clinical appearance of Hodgkin's disease is discussed.

Antibodies, Monoclonal↗
PubMed1983

Gangliotriaosylceramide (asialo GM2), a glycosphingolipid marker for cell lines derived from patients with Hodgkin's disease.

Three cell lines, isolated from different patients with Hodgkin's disease, were analyzed for their neutral glycosphingolipids by high performance liquid chromatography. On two of these lines gangliotriaosylceramide (asialo GM2) was identified by the comparison of retention time to authentic standards and by degradation with specific glycosidases. This glycosphingolipid was also serologically detected with a specific monoclonal antibody of the IgM class. The third line, which according to other criteria such as the Epstein Barr virus nuclear antigen differs phenotypically from the first two, did not exhibit gangliotriaosylceramide. This glycosphingolipid is an unusual marker for human cells and could not be detected on the peripheral blood leukocytes of healthy donors.

Animals↗
PubMed1982

Translocation t(8;22) in peripheral lymphocytes and established lymphoid cell lines from a patient with Hodgkin's disease followed by acute lymphatic leukemia.

Cytogenetic studies on primary material and established cell lines of a patient with B-cell non-Hodgkin Lymphoma with leukemic presentation as secondary malignancy after Hodgkin's disease clearly revealed correspondent marker chromosomes in both culture systems. A translocation t(8;22) which has been described in some cases of non-endemic Burkitt's lymphoma as a variant of the translocation t(8;14) was found in all metaphases of the cell lines and in most of the cells of the primary material. In addition, structural aberrations involving chromosomes 1, 2, 3 and 11, as well as numerical deviations concerning chromosomes 2, 4, 7 and Y, could be observed. The cytogenetical findings are discussed in relation to clinical, immunological and cytochemical data.

Adult↗
PubMed1982

Characteristics of Hodgkin's disease-derived cell lines.

In the last 3 years we were able to establish five long-term in vitro cell cultures from biopsy specimens taken preterminally from four patients with histologically proven Hodgkin's disease (nodular sclerosing type, clinical stage IVB). Four of the lines are continuously proliferating in vitro; one culture stopped growth for unknown reasons after 7 months. When culture conditions were modulated, the first culture, L 428, gave rise to two sublines: L 428 KS, after adaptation to calf serum, and L 428 KSA, permanently growing as an adherent monolayer line after treatment with a phorbol ester (12-O-tetradecanoylphorbol-13-acetate) for 3 weeks. Cell-marker analysis by conventional means (SIg, cIg, rosette formation, Epstein-barr virus reactivity, cytochemistry, phagocytosis, and lysozyme production) and with monoclonal antibodies directed against various human lymphoid, myeloid, and monocytoid antigens showed that the tested cell lines are clearly different from all hitherto described hematopoietic lines; they most likely represent a cell type resembling an early myeloid-monocytoid progenitor cell. Conditioned medium of the L 428 cells and its two sublines showed colony-stimulating factor activity and suppression of spontaneous cell-mediated cytolysis of L 428 KS and K 562 cells.

Adult↗
PubMedDate not supplied

Hodgkin's cell lines: characteristics and possible pathogenetic implications.

In the last four years we established five long term cultures from tumor material of Hodgkin's disease. The in vitro cells have malignant characteristics and represent the in vivo H- and SR-cells. Common immunological, functional and morphological assays did not characterize the in vitro cells to be a known cell type of lymphoid, myeloid or monocytoid tissue. The in vitro Hodgkin cells are biologically active by producing factors involved in regulation and promotion of immunological response and granulopoiesis. The relevance of the findings for pathogenesis and clinical appearance of Hodgkin's disease is discussed.

Cell Line↗