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Induction of an eosinophil chemotactic factor production from T lymphocytes by a B cell lymphoma line. 1993

M Hirashima, and M Ueno, and N Saita, and S Takamura, and K Watanabe, and S Tsurufuji, and M Adachi
Department of Pathology, Kumamoto University Medical School, Kumamoto Red Cross Hospital, Japan.

Production of an eosinophil chemotactic factor (ECF) from human mononuclear leukocytes (MNL) was induced by coculture with an irradiated B cell lymphoma line, BALL-1. BALL-1 induced ECF production from OKT4-positive T lymphocytes without evident IL-2 production. Treatment of MNL with anti-IL-2 antibody failed to suppress the BALL-1-induced ECF production, whereas the treatment strongly inhibited IL-2-induced ECF production. Control supernatants of BALL-1 cells alone did not induce ECF production. BALL-1 fixed with periodate-lysine-paraformaldehyde, but not acetone or ethanol, induced evident ECF production. The isoelectric point of BALL-1-induced ECF (m.w. 10-30 kD) was around pI 7, whereas that of the IL-2-induced ECF was around pI 5. A combination of monoclonal antibodies against IL-3, IL-5, and GM-CSF suppressed the activity of the IL-2-induced ECF but not that of the BALL-1-induced ECF. BALL-1-induced ECF suppressed a respiratory burst from an eosinophilic cell line (YY-1) induced by N-formyl-L-methionyl-L-leucyl-L-phenylalanine, whereas the IL-2-induced ECF did not, suggesting that the biological function of these two ECF is different, at least in the effect on respiratory burst of eosinophils. From the present results we propose that one reason for infiltration of eosinophils into the stroma of tumors is that some tumor cells can stimulate OKT4-positive T lymphocytes to produce an ECF, and that eosinophils attracted by this ECF exhibit biological functions which are different from those of eosinophils attracted by other ECF.

UI MeSH Term Description Entries
D007376 Interleukin-2 A soluble substance elaborated by antigen- or mitogen-stimulated T-LYMPHOCYTES which induces DNA synthesis in naive lymphocytes. IL-2,Lymphocyte Mitogenic Factor,T-Cell Growth Factor,TCGF,IL2,Interleukin II,Interleukine 2,RU 49637,RU-49637,Ro-23-6019,Ro-236019,T-Cell Stimulating Factor,Thymocyte Stimulating Factor,Interleukin 2,Mitogenic Factor, Lymphocyte,RU49637,Ro 23 6019,Ro 236019,Ro236019,T Cell Growth Factor,T Cell Stimulating Factor
D007526 Isoelectric Point The pH in solutions of proteins and related compounds at which the dipolar ions are at a maximum. Isoelectric Points,Point, Isoelectric,Points, Isoelectric
D007700 Kinetics The rate dynamics in chemical or physical systems.
D009240 N-Formylmethionine Leucyl-Phenylalanine A formylated tripeptide originally isolated from bacterial filtrates that is positively chemotactic to polymorphonuclear leucocytes, and causes them to release lysosomal enzymes and become metabolically activated. F-Met-Leu-Phe,N-Formyl-Methionyl-Leucyl-Phenylalanine,Formylmet-Leu-Phe,Formylmethionyl Peptide,Formylmethionyl-Leucyl-Phenylalanine,Formylmethionylleucylphenylalanine,N-Formylated Peptide,N-formylmethionyl-leucyl-phenylalanine,fMet-Leu-Phe,F Met Leu Phe,Formylmet Leu Phe,Formylmethionyl Leucyl Phenylalanine,Leucyl-Phenylalanine, N-Formylmethionine,N Formyl Methionyl Leucyl Phenylalanine,N Formylated Peptide,N Formylmethionine Leucyl Phenylalanine,N formylmethionyl leucyl phenylalanine,Peptide, Formylmethionyl,Peptide, N-Formylated,fMet Leu Phe
D002460 Cell Line Established cell cultures that have the potential to propagate indefinitely. Cell Lines,Line, Cell,Lines, Cell
D002631 Chemotactic Factors, Eosinophil Cytotaxins liberated from normal or invading cells that specifically attract eosinophils; they may be complement fragments, lymphokines, neutrophil products, histamine or other; the best known is the tetrapeptide ECF-A, released mainly by mast cells. Eosinophil Chemotactic Factors,Eosinophil Chemotaxins,Chemotaxins, Eosinophil,Factors, Eosinophil Chemotactic
D002634 Chemotaxis, Leukocyte The movement of leukocytes in response to a chemical concentration gradient or to products formed in an immunologic reaction. Leukotaxis,Leukocyte Chemotaxis
D004804 Eosinophils Granular leukocytes with a nucleus that usually has two lobes connected by a slender thread of chromatin, and cytoplasm containing coarse, round granules that are uniform in size and stainable by eosin. Eosinophil
D006684 HLA-DR Antigens A subclass of HLA-D antigens that consist of alpha and beta chains. The inheritance of HLA-DR antigens differs from that of the HLA-DQ ANTIGENS and HLA-DP ANTIGENS. HLA-DR,Antigens, HLA-DR,HLA DR Antigens
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man

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