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M94A3209.TXT
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1994-10-25
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Document 3209
DOCN M94A3209
TI Vascular endothelial growth factor produced by cultured AIDS-associated
Kaposi's sarcoma spindle cells.
DT 9412
AU Sakurada S; Mori KM; Salahuddin SZ; Okamoto T; Nakamura S; Dept. of
Molecular Genetics, Nagoya City University, Japan.
SO Int Conf AIDS. 1994 Aug 7-12;10(1):128 (abstract no. PA0131). Unique
Identifier : AIDSLINE ICA10/94369366
AB OBJECTIVE: To elucidate the mechanism of edema in AIDS-associated
Kaposi's sarcoma (AIDS-KS) lesions. METHODS: Long-term cultured AIDS-KS
spindle cells and their semi-purified conditioned medium (AIDS-KS CM)
through heparin sepharose affinity column were tested to detect the
activity inducing vascular hyper-permeability (VHP) in animal skin and
promoting vascular endothelial cell growth in vitro. To identify the
active agent produced by AIDS-KS cells, Western blot was done by using
each fraction from the affinity column with anti-vascular endothelial
growth factor(VEGF165) antibody and Northern blot was done by using RNA
extracted from various AIDS-KS cell isolates with VEGF cDNA probe
respectively. RESULTS: Both cultured AIDS-KS cells and AIDS-KS CM
induced a specific histamine independent VHP in animal model and AIDS-KS
CM demonstrated endothelial cell growth promoting activity in vitro. Two
bands of 23.5 kD and 21.5 kD were identified in 0.5 M NaCl fraction by
Western blot and high levels of VEGF mRNA in all AIDS-KS cell isolates
by Northern blot. Moreover, the biological activity was totally
neutralized by antibody to VEGF165. CONCLUSION: VEGF or VEGF like
molecule was identified as the active agent causing significant
complication of the disease: edema in AIDS-KS lesions.
DE Acquired Immunodeficiency Syndrome/*COMPLICATIONS Animal Blotting,
Northern Capillary Permeability/DRUG EFFECTS Cell Division/DRUG
EFFECTS Cells, Cultured Chromatography, Affinity Culture Media,
Conditioned Endothelial Growth Factors/*BIOSYNTHESIS/ISOLATION & PURIF/
PHARMACOLOGY Endothelium, Vascular/CYTOLOGY/DRUG EFFECTS
Histamine/PHARMACOLOGY Human Lymphokines/*BIOSYNTHESIS/ISOLATION &
PURIF/PHARMACOLOGY RNA, Neoplasm/ISOLATION & PURIF/METABOLISM Sarcoma,
Kaposi's/ETIOLOGY/*METABOLISM/*PATHOLOGY Skin/BLOOD SUPPLY Tumor
Cells, Cultured MEETING ABSTRACT
SOURCE: National Library of Medicine. NOTICE: This material may be
protected by Copyright Law (Title 17, U.S.Code).