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M9490761.TXT
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1994-09-24
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Document 0761
DOCN M9490761
TI Characterization of a human Kaposi's sarcoma cell line that induces
angiogenic tumors in animals.
DT 9411
AU Herndier BG; Werner A; Arnstein P; Abbey NW; Demartis F; Cohen RL;
Shuman MA; Levy JA; Department of Pathology, San Francisco General
Hospital,; California.
SO AIDS. 1994 May;8(5):575-81. Unique Identifier : AIDSLINE MED/94338592
AB OBJECTIVE: To characterize a Kaposi's sarcoma (KS) cell line established
from a tumor biopsy from the oral mucosa of an iatrogenically
immunosuppressed HIV-negative man. METHODS: Cells were placed in culture
and evaluated by a variety of biologic, serologic, karyotypic, and
immunologic procedures. Electron microscopic examination was performed.
The ability to produce tumors in nude mice was evaluated, and the nature
of the cells within the tumor determined. Assays for urokinase
plasminogen activator type (uPA), plasminogen activator inhibitor-1
(PAI-1) and the urokinase receptor (uPAR) were conducted. RESULTS: The
SLK cell line has an endothelial cell morphology with very little
anaplasia. The karyotype indicates diploid phenotype of human origin.
Immunohistochemical and electron microscopic examinations confirmed the
endothelial nature of this cell line. No viruses were detected. The
tumors induced in nude mice showed hypervascularization, with
characteristics of KS. The cell line produces uPA and PAI-1, and also
expresses uPAR. CONCLUSIONS: The SLK cell line is of endothelial cell
origin and the first human cell line to induce KS-like tumors in
recipient animals. The expression of urokinase and its receptor suggests
a paracrine and autocrine interaction that may be important for the
growth of the tumor. The SLK line should be valuable for studies of KS
pathogenesis and therapeutic approaches to this malignancy.
DE Animal Cell Division Endothelium/PATHOLOGY Human HIV Seronegativity
Immunocompromised Host Karyotyping Male Mice Mice, Nude Mouth
Mucosa/PATHOLOGY Mouth Neoplasms/*PATHOLOGY Neoplasm Proteins/ANALYSIS
Neoplasm Transplantation Neovascularization/*ETIOLOGY Plasminogen
Activator Inhibitor 1/ANALYSIS Receptors, Cell Surface/ANALYSIS
Sarcoma, Kaposi's/*PATHOLOGY Support, U.S. Gov't, P.H.S. *Tumor Cells,
Cultured/PATHOLOGY/TRANSPLANTATION Tumor Markers, Biological
Urokinase/ANALYSIS JOURNAL ARTICLE
SOURCE: National Library of Medicine. NOTICE: This material may be
protected by Copyright Law (Title 17, U.S.Code).