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Mechanism of target cell lysis by cytotoxic T lymphocytes (CTL) employing RSV-induced H-2 congenic and recombinant mouse tumor cells: demonstration of soluble mediators released from H-2-restricted CTL clones. 1988

S Haraguchi, and T Fujii, and T Matsuo, and T O Yoshida
Department of Microbiology and Immunology, Hamamatsu University School of Medicine, Japan.

The secretion and the specificity of cytotoxic mediators from H-2-restricted cytotoxic T lymphocytes (CTL) were examined using non-virus-producing target tumor cells induced by the Schmidt-Ruppin strain of Rous sarcoma virus (SR-RSV) in B10 congenic and recombinant mice. By using rat concanavalin A supernatant, two H-2-restricted CTL clones were established from cytotoxic effector cells of B10.A(5R) mice primed with SR-RSV-induced syngeneic tumor Cell-free supernatants from the H-2-restricted CTL clones cocultured with syngeneic tumor cells had selectively high cytotoxic activity for syngeneic and H-2-compatible tumor cells, but not for H-2-incompatible tumor cells. YAC-1 cells, and B10.A(5R) blasts as defined in the 5-hr 51Cr-release assay. The cytotoxic activity was detected in the cell-free supernatants from the CTL clones cocultured with the CTL-sensitive syngeneic and H-2-compatible tumor cells, but not with the CTL-insensitive tumor cells and YAC-1 cells. The cytotoxic activity of the cell-free supernatant could be adsorbed by the syngeneic tumor cells, but not by YAC-1 and L(s) cells. Thus, the H-2-restricted CTL clones against SR-RSV-induced tumor cells were capable of releasing cytotoxic mediators by coculturing with syngeneic or H-2-compatible tumor cells, and the cytotoxic mediators showed a certain H-2-restricted manner in killing the target cells. These results suggest that the lysis of RSV-induced tumor cells by H-2-restricted CTL can at least in part be mediated by cytotoxic factors.

UI MeSH Term Description Entries
D011995 Recombination, Genetic Production of new arrangements of DNA by various mechanisms such as assortment and segregation, CROSSING OVER; GENE CONVERSION; GENETIC TRANSFORMATION; GENETIC CONJUGATION; GENETIC TRANSDUCTION; or mixed infection of viruses. Genetic Recombination,Recombination,Genetic Recombinations,Recombinations,Recombinations, Genetic
D002450 Cell Communication Any of several ways in which living cells of an organism communicate with one another, whether by direct contact between cells or by means of chemical signals carried by neurotransmitter substances, hormones, and cyclic AMP. Cell Interaction,Cell-to-Cell Interaction,Cell Communications,Cell Interactions,Cell to Cell Interaction,Cell-to-Cell Interactions,Communication, Cell,Communications, Cell,Interaction, Cell,Interaction, Cell-to-Cell,Interactions, Cell,Interactions, Cell-to-Cell
D002472 Cell Transformation, Viral An inheritable change in cells manifested by changes in cell division and growth and alterations in cell surface properties. It is induced by infection with a transforming virus. Transformation, Viral Cell,Viral Cell Transformation,Cell Transformations, Viral,Transformations, Viral Cell,Viral Cell Transformations
D002999 Clone Cells A group of genetically identical cells all descended from a single common ancestral cell by mitosis in eukaryotes or by binary fission in prokaryotes. Clone cells also include populations of recombinant DNA molecules all carrying the same inserted sequence. (From King & Stansfield, Dictionary of Genetics, 4th ed) Clones,Cell, Clone,Cells, Clone,Clone,Clone Cell
D003602 Cytotoxicity, Immunologic The phenomenon of target cell destruction by immunologically active effector cells. It may be brought about directly by sensitized T-lymphocytes or by lymphoid or myeloid "killer" cells, or it may be mediated by cytotoxic antibody, cytotoxic factor released by lymphoid cells, or complement. Tumoricidal Activity, Immunologic,Immunologic Cytotoxicity,Immunologic Tumoricidal Activities,Immunologic Tumoricidal Activity,Tumoricidal Activities, Immunologic
D003603 Cytotoxins Substances that are toxic to cells; they may be involved in immunity or may be contained in venoms. These are distinguished from CYTOSTATIC AGENTS in degree of effect. Some of them are used as CYTOTOXIC ANTIBIOTICS. The mechanism of action of many of these are as ALKYLATING AGENTS or MITOSIS MODULATORS. Cytolysins,Cytotoxic Agent,Cytotoxic Agents,Cytotoxin,Agent, Cytotoxic
D006183 H-2 Antigens The major group of transplantation antigens in the mouse. H2 Antigens,Antigens, H-2,Antigens, H2,H 2 Antigens
D000327 Adsorption The adhesion of gases, liquids, or dissolved solids onto a surface. It includes adsorptive phenomena of bacteria and viruses onto surfaces as well. ABSORPTION into the substance may follow but not necessarily. Adsorptions
D000818 Animals Unicellular or multicellular, heterotrophic organisms, that have sensation and the power of voluntary movement. Under the older five kingdom paradigm, Animalia was one of the kingdoms. Under the modern three domain model, Animalia represents one of the many groups in the domain EUKARYOTA. Animal,Metazoa,Animalia
D001358 Avian Sarcoma Viruses Group of alpharetroviruses (ALPHARETROVIRUS) producing sarcomata and other tumors in chickens and other fowl and also in pigeons, ducks, and RATS. Avian Sarcoma Virus B77,Chicken Sarcoma Virus B77,Chicken Tumor 1 Virus,Fujinami sarcoma virus,Sarcoma Viruses, Avian,Avian Sarcoma Virus,Fujinami sarcoma viruses,Sarcoma Virus, Avian,Virus, Avian Sarcoma,Viruses, Avian Sarcoma,sarcoma virus, Fujinami,virus, Fujinami sarcoma,viruses, Fujinami sarcoma

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