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Human tumor necrosis factor-alpha mutant RGD-V29 (F4614) shows potent antitumor activity and reduced toxicity against human tumor xenografted nude mice. 2000

K Kuroda, and K Miyata, and F Fujita, and M Koike, and M Fujita, and M Nomura, and S Nakagawa, and Y Tsutsumi, and T Kawagoe, and Y Mitsuishi, and T Mayumi
Medicinal Research Laboratory, Central Research Institute, Ishihara Sangyo Kaisha Ltd., 2-3-1 Nishi-Shibukawa, Kusatsu, 525-0025, Shiga, Japan.

The antitumor effects of human tumor necrosis factor-alpha (TNF) mutant RGD-V29 (code no. F4614), that includes the cell adhesive sequence (4)Arg-(5)Gly-(6)Asp and (29)Arg-->Val substitution, were evaluated. The therapeutic index, a measure of the extent of the therapeutically-effective range, using three constitutive administrations of RGD-V29 in Meth A-bearing mice was 4.8, whereas that of recombinant human TNF (rhTNF) ((1)SSS(4)RTPSDK...(29)RR...(155)L) was 2.8, clearly indicating that the effective RGD-V29 dose-range was extended. Furthermore, RGD-V29 showed potent antitumor activity against human lung cancer Mqnu-1 xenografted nude mice without severe gastrointestinal and other organ toxicities, even when administered at the maximal tolerated dose (MTD). In contrast, rhTNF induced severe toxicity at the MTD. Direct cytotoxicity of RGD-V29 against Mqnu-1 cells was similar to that of rhTNF. In addition, a cytotoxicity assay using a tumor-derived endothelial-like cell (tEC)/normal endothelial cell (nEC) system used to study TNF antitumor effects on tumor-associated endothelial cells, suggested that RGD-V29 showed preferential cytotoxicity toward tumor-associated endothelial cells compared with rhTNF. Thus, RGD-V29 appears to be a low-toxicity mutant of rhTNF that shows preferential activity towards tumors, and therefore merits further investigation in pre-clinical and clinical studies.

UI MeSH Term Description Entries
D008175 Lung Neoplasms Tumors or cancer of the LUNG. Cancer of Lung,Lung Cancer,Pulmonary Cancer,Pulmonary Neoplasms,Cancer of the Lung,Neoplasms, Lung,Neoplasms, Pulmonary,Cancer, Lung,Cancer, Pulmonary,Cancers, Lung,Cancers, Pulmonary,Lung Cancers,Lung Neoplasm,Neoplasm, Lung,Neoplasm, Pulmonary,Pulmonary Cancers,Pulmonary Neoplasm
D008807 Mice, Inbred BALB C An inbred strain of mouse that is widely used in IMMUNOLOGY studies and cancer research. BALB C Mice, Inbred,BALB C Mouse, Inbred,Inbred BALB C Mice,Inbred BALB C Mouse,Mice, BALB C,Mouse, BALB C,Mouse, Inbred BALB C,BALB C Mice,BALB C Mouse
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
D009368 Neoplasm Transplantation Experimental transplantation of neoplasms in laboratory animals for research purposes. Transplantation, Neoplasm,Neoplasm Transplantations,Transplantations, Neoplasm
D011994 Recombinant Proteins Proteins prepared by recombinant DNA technology. Biosynthetic Protein,Biosynthetic Proteins,DNA Recombinant Proteins,Recombinant Protein,Proteins, Biosynthetic,Proteins, Recombinant DNA,DNA Proteins, Recombinant,Protein, Biosynthetic,Protein, Recombinant,Proteins, DNA Recombinant,Proteins, Recombinant,Recombinant DNA Proteins,Recombinant Proteins, DNA
D002460 Cell Line Established cell cultures that have the potential to propagate indefinitely. Cell Lines,Line, Cell,Lines, Cell
D002470 Cell Survival The span of viability of a cell characterized by the capacity to perform certain functions such as metabolism, growth, reproduction, some form of responsiveness, and adaptability. Cell Viability,Cell Viabilities,Survival, Cell,Viabilities, Cell,Viability, Cell
D004305 Dose-Response Relationship, Drug The relationship between the dose of an administered drug and the response of the organism to the drug. Dose Response Relationship, Drug,Dose-Response Relationships, Drug,Drug Dose-Response Relationship,Drug Dose-Response Relationships,Relationship, Drug Dose-Response,Relationships, Drug Dose-Response
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D000595 Amino Acid Sequence The order of amino acids as they occur in a polypeptide chain. This is referred to as the primary structure of proteins. It is of fundamental importance in determining PROTEIN CONFORMATION. Protein Structure, Primary,Amino Acid Sequences,Sequence, Amino Acid,Sequences, Amino Acid,Primary Protein Structure,Primary Protein Structures,Protein Structures, Primary,Structure, Primary Protein,Structures, Primary Protein

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