Antineoplastic urinary protein inhibits Kaposi's sarcoma and angiogenesis in vitro and in vivo. 1999

R Masood, and M E McGarvey, and T Zheng, and J Cai, and N Arora, and D L Smith, and N Sloane, and P S Gill
University of Southern California School of Medicine, Department of Internal Medicine and Pathology, Los Angeles, CA, USA.

Kaposi's sarcoma (KS) is the most common tumor in human immunodeficiency virus infection and acquired immune deficiency syndrome. Recent clinical trials with human chorionic gonadotropin (hCG) prepared from early pregnancy urine have shown encouraging results in the resolution of KS lesions. A urinary protein with antitumor activity, ANUP (antineoplastic urinary protein), a dimer of 32 kD, has previously been shown to inhibit the growth of various tumor cell lines in vivo. It was thus studied for its activity in KS cell lines in vitro and in vivo to determine whether it could be a source of the anti-KS activity observed in hCG preparations. ANUP is a strong growth inhibitor for KS cell lines, but has little or no effect on fibroblast, aortic smooth muscle, T- and B-lymphocyte, and monocyte cell lines. ANUP also inhibited the proliferation of endothelial cell lines, suggesting that the in vitro effects were endothelial cell lineage-specific. However, ANUP antibodies did not block the inhibitory effect of certain commercial preparations of hCG, previously shown to be active in KS. Thus, the active protein in these commercial preparations of hCG may be distinct from ANUP. The antitumor activity of ANUP was further confirmed in a chicken allantoic membrane (CAM) assay in which vascular endothelial growth factor (VEGF) and beta fibroblast growth factor (bFGF)-induced angiogenesis was inhibited by ANUP in a dose-dependent manner. In vivo activity of ANUP was demonstrated in the murine model of KS, where ANUP inhibited tumor growth. ANUP is thus a potential candidate for development in the treatment of KS and other diseases in which angiogenesis plays an important role.

UI MeSH Term Description Entries
D008222 Lymphokines Soluble protein factors generated by activated lymphocytes that affect other cells, primarily those involved in cellular immunity. Lymphocyte Mediators,Mediators, Lymphocyte
D008819 Mice, Nude Mutant mice homozygous for the recessive gene "nude" which fail to develop a thymus. They are useful in tumor studies and studies on immune responses. Athymic Mice,Mice, Athymic,Nude Mice,Mouse, Athymic,Mouse, Nude,Athymic Mouse,Nude Mouse
D009131 Muscle, Smooth, Vascular The nonstriated involuntary muscle tissue of blood vessels. Vascular Smooth Muscle,Muscle, Vascular Smooth,Muscles, Vascular Smooth,Smooth Muscle, Vascular,Smooth Muscles, Vascular,Vascular Smooth Muscles
D009389 Neovascularization, Pathologic A pathologic process consisting of the proliferation of blood vessels in abnormal tissues or in abnormal positions. Angiogenesis, Pathologic,Angiogenesis, Pathological,Neovascularization, Pathological,Pathologic Angiogenesis,Pathologic Neovascularization,Pathological Angiogenesis,Pathological Neovascularization
D011506 Proteins Linear POLYPEPTIDES that are synthesized on RIBOSOMES and may be further modified, crosslinked, cleaved, or assembled into complex proteins with several subunits. The specific sequence of AMINO ACIDS determines the shape the polypeptide will take, during PROTEIN FOLDING, and the function of the protein. Gene Products, Protein,Gene Proteins,Protein,Protein Gene Products,Proteins, Gene
D002478 Cells, Cultured Cells propagated in vitro in special media conducive to their growth. Cultured cells are used to study developmental, morphologic, metabolic, physiologic, and genetic processes, among others. Cultured Cells,Cell, Cultured,Cultured Cell
D002642 Chick Embryo The developmental entity of a fertilized chicken egg (ZYGOTE). The developmental process begins about 24 h before the egg is laid at the BLASTODISC, a small whitish spot on the surface of the EGG YOLK. After 21 days of incubation, the embryo is fully developed before hatching. Embryo, Chick,Chick Embryos,Embryos, Chick
D004354 Drug Screening Assays, Antitumor Methods of investigating the effectiveness of anticancer cytotoxic drugs and biologic inhibitors. These include in vitro cell-kill models and cytostatic dye exclusion tests as well as in vivo measurement of tumor growth parameters in laboratory animals. Anticancer Drug Sensitivity Tests,Antitumor Drug Screens,Cancer Drug Tests,Drug Screening Tests, Tumor-Specific,Dye Exclusion Assays, Antitumor,Anti-Cancer Drug Screens,Antitumor Drug Screening Assays,Tumor-Specific Drug Screening Tests,Anti Cancer Drug Screens,Anti-Cancer Drug Screen,Antitumor Drug Screen,Cancer Drug Test,Drug Screen, Anti-Cancer,Drug Screen, Antitumor,Drug Screening Tests, Tumor Specific,Drug Screens, Anti-Cancer,Drug Screens, Antitumor,Drug Test, Cancer,Drug Tests, Cancer,Screen, Anti-Cancer Drug,Screen, Antitumor Drug,Screens, Anti-Cancer Drug,Screens, Antitumor Drug,Test, Cancer Drug,Tests, Cancer Drug,Tumor Specific Drug Screening Tests
D004730 Endothelium, Vascular Single pavement layer of cells which line the luminal surface of the entire vascular system and regulate the transport of macromolecules and blood components. Capillary Endothelium,Vascular Endothelium,Capillary Endotheliums,Endothelium, Capillary,Endotheliums, Capillary,Endotheliums, Vascular,Vascular Endotheliums
D005260 Female Females

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