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Haematology and Blood Transfusion Vol. 26<br />

<strong>Modern</strong> Trends in Human Leukemia IV<br />

Edited by Neth, Gallo, Graf, Mannweiler, Winkler<br />

© Springer-Verlag Berlin Heidelberg 1981<br />

Lymphoproliferation and Heterotransplantation in Nude Mice: Tumor<br />

Cells in Hodgkin's Disease*<br />

V. Diehl, H. H. Kirchner, M. Schaadt, C. Fonatsch, and H. Stein<br />

A. Summary<br />

In the last 3 years we were able to establish<br />

four long-term cultures from Hodgkin-derived<br />

material [pleuraleffusions (2), bone marrow<br />

(1), and peripheral blood (1)], consisting of<br />

cells which represent morphologic and cytochemical<br />

as well as cytogenetic features of their<br />

in vivo ancestors. Two of these cell lines are<br />

described in this paper.<br />

These two lines share the same features:<br />

non-B-T lymphocytes, non-macrophages, non<br />

myeloid cells, EBV genome negative, monoclonality,<br />

multiple numerical and structural<br />

chromosome aberrations, and tumor formation<br />

upon intracranial xenotransplantation in<br />

nude mice.<br />

The two remaining lines are being characterized<br />

at the moment. The common characteristics<br />

expressed synonymously in the two described<br />

lines suggest that the Hodgkin tumor<br />

cell does not seem to share the features of<br />

marker-carrying lymphocytes, macrophages,<br />

or myeloblasts. The cellular origin of these<br />

cells is not dear. The loss of cellular differential<br />

markers du ring the process of possible dedifferentiation<br />

is discussed.<br />

B. Introduction<br />

The "Sternberg-Reed" (SR) and "Hodgkin"<br />

(H) cells are considered to be the neoplastic<br />

cells in Hodgkin's disease. Their cellular origin<br />

* This work was supported by the Deutsche Forschungsgemeinschaft<br />

Bad Godesberg (Di 184-<br />

5/6)<br />

is still subject of considerable controversy.<br />

There are arguments for a histiocytic origin of<br />

SR and H cells (Rappaport 1966; Mori and<br />

Lennert 1969) as wen as for their lymphoid<br />

origin (Dorfman et al. 1973; Papadimitriou et<br />

al. 1978).<br />

Because of the fragility of freshly isolated<br />

Hand SR cells and the contamination with<br />

numerous reactive cells the precise analysis of<br />

their cell type is difficult. These limitations can<br />

be overcome by the establishment of in vitro<br />

proliferating cell populations with neoplastic<br />

properties from patients with Hodgkin's disease.<br />

The present report describes the features<br />

of two established in vitro cell lines from the<br />

pleural effusions of two patients with histologically<br />

proven Hodgkin's disease.<br />

c. Patients, Material, and Methods<br />

The pleural effusions were obtained from a 37-yearold<br />

woman (E.M.) with histologically proven Hodgkin's<br />

disease, which was of the nodular sclerosing<br />

type, stage IV B, and was primarily diagnosed in<br />

1972 (L 428), and from a 36-year-old man (HR.)<br />

with Hodgkin's disease, nodular sclerosing type,<br />

which was diagnosed in 1976 from an inguinallymph<br />

node biopsy (L 439).<br />

I. Establishment of the In Vitro Cultures<br />

The heparinized pleural effusion fluid was centrifuged<br />

at 150 g for 10 min and the pellet was<br />

resuspended in an 0.84%NH 4 Cl solution to desintegrate<br />

the remaining erythrocytes. After two washings<br />

cells were incubated in RPMI 1640 medium<br />

supplemented with 20% fetal calf serum, glutamin,<br />

and penicillin/streptomycin at 37° C in a 5 % CO 2 air<br />

atmosphere.<br />

229

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