Biomaterial Database

Regulation of immune responses against the syngeneic ADJ-PC-5 plasmacytoma in BALB/c mice. IV. Tumor-specific T suppressor cells, induced at early stages of tumorigenesis, act on the induction phase of the tumor-specific cytotoxic T cell response. 1986

H D Haubeck, and E Kölsch

The BALB/c plasmacytoma ADJ-PC-5 induces specific non-cytolytic T suppressor (Ts) cells under experimental conditions which closely resemble early stages of tumorigenesis. The phenotype of these Ts cells is Thy-1.2+, Lyt-1.2-, Lyt-2.2+, I-Ad-. They inhibit the induction of the cytotoxic T cells in a primary mixed lymphocyte tumor culture (MLTC) against the ADJ-PC-5 plasmacytoma. Specificity of suppression can be demonstrated by testing them in MLTC against a panel of syngeneic control tumor. Only the induction phase of a primary MLTC can be suppressed, and within 24 h of MLTC, cytotoxic T (Tc) cells become resistant towards suppression. ADJ-PC-5-specific Tc cell clones are also resistant to suppression. The fact that Ts cell-mediated specific suppression can be overcome by addition of semipurified IL2 to the MLTC suggests that Th cells, and not Tc cell precursors, are the target. The findings are discussed with respect to the potential use of Tc effector cells in cancer therapy.

UI	MeSH Term	Description	Entries
D007700	Kinetics	The rate dynamics in chemical or physical systems.
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
D010954	Plasmacytoma	Any discrete, presumably solitary, mass of neoplastic PLASMA CELLS either in BONE MARROW or various extramedullary sites.	Plasma Cell Tumor,Plasmocytoma,Plasma Cell Tumors,Plasmacytomas,Plasmocytomas,Tumor, Plasma Cell,Tumors, Plasma Cell
D002460	Cell Line	Established cell cultures that have the potential to propagate indefinitely.	Cell Lines,Line, Cell,Lines, 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
D005260	Female		Females
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
D000945	Antigens, Differentiation, T-Lymphocyte	Antigens expressed on the cell membrane of T-lymphocytes during differentiation, activation, and normal and neoplastic transformation. Their phenotypic characterization is important in differential diagnosis and studies of thymic ontogeny and T-cell function.	Antigens, Differentiation, T-Cell,Differentiation Antigens, T-Cell,L3T4 Antigens,Leu Antigens, T-Lymphocyte,T-Cell Differentiation Antigens,T-Lymphocyte Differentiation Antigens,T6 Antigens,Antigens, Differentiation, T Lymphocyte,Differentiation Antigens, T Lymphocyte,Antigens, L3T4,Antigens, T-Cell Differentiation,Antigens, T-Lymphocyte Differentiation,Antigens, T-Lymphocyte Leu,Antigens, T6,Differentiation Antigens, T Cell,Differentiation Antigens, T-Lymphocyte,Leu Antigens, T Lymphocyte,T Cell Differentiation Antigens,T Lymphocyte Differentiation Antigens,T-Lymphocyte Leu Antigens
D000954	Antigens, Surface	Antigens on surfaces of cells, including infectious or foreign cells or viruses. They are usually protein-containing groups on cell membranes or walls and may be isolated.	Cell Surface Antigens,Surface Antigens,Surface Markers, Immunological,Cell Surface Antigen,Immunologic Surface Markers,Markers, Immunological Surface,Surface Antigen,Surface Markers, Immunologic,Antigen, Cell Surface,Antigen, Surface,Antigens, Cell Surface,Immunological Surface Markers,Markers, Immunologic Surface,Surface Antigen, Cell,Surface Antigens, Cell
D013602	T-Lymphocytes, Cytotoxic	Immunized T-lymphocytes which can directly destroy appropriate target cells. These cytotoxic lymphocytes may be generated in vitro in mixed lymphocyte cultures (MLC), in vivo during a graft-versus-host (GVH) reaction, or after immunization with an allograft, tumor cell or virally transformed or chemically modified target cell. The lytic phenomenon is sometimes referred to as cell-mediated lympholysis (CML). These CD8-positive cells are distinct from NATURAL KILLER CELLS and NATURAL KILLER T-CELLS. There are two effector phenotypes: TC1 and TC2.	Cell-Mediated Lympholytic Cells,Cytotoxic T Cells,Cytotoxic T Lymphocyte,Cytotoxic T-Lymphocytes,TC1 Cell,TC1 Cells,TC2 Cell,TC2 Cells,Cell Mediated Lympholytic Cells,Cell, Cell-Mediated Lympholytic,Cell, TC1,Cell, TC2,Cell-Mediated Lympholytic Cell,Cytotoxic T Cell,Cytotoxic T Lymphocytes,Cytotoxic T-Lymphocyte,Lymphocyte, Cytotoxic T,Lympholytic Cell, Cell-Mediated,Lympholytic Cells, Cell-Mediated,T Cell, Cytotoxic,T Lymphocyte, Cytotoxic,T Lymphocytes, Cytotoxic,T-Lymphocyte, Cytotoxic