Biomaterial Database

B cell-derived BCGF functions as autocrine growth factor(s) in normal and transformed B lymphocytes. 1986

A Muraguchi, and H Nishimoto, and N Kawamura, and A Hori, and T Kishimoto

This paper demonstrates that B cell lines, as well as normal activated B cells generate and respond to B cell-specific growth factor(s) (BCGF). BCGF derived from B cells (B-BCGF) appears to be distinct from interleukin 1, interleukin 2 (IL 2), B cell stimulatory factor, BCGF-II, interferon-gamma, or transforming growth factor. It acts on activated B cells, but not on resting G0 phase B cells to induce proliferation. B cell lines, immortalized by Epstein-Barr virus, constitutively secrete 10-fold higher level of B-BCGF compared with normal activated B cells, suggesting that an activated autocrine loop might be operating in immortalized B cells. On the basis of our observations, we postulate that B cell clonal expansion may occur, at least in part, through a B-BCGF-dependent autocrine pathway similar to IL 2 effect on T cells.

UI	MeSH Term	Description	Entries
D007399	Interphase	The interval between two successive CELL DIVISIONS during which the CHROMOSOMES are not individually distinguishable. It is composed of the G phases (G1 PHASE; G0 PHASE; G2 PHASE) and S PHASE (when DNA replication occurs).	Interphases
D008213	Lymphocyte Activation	Morphologic alteration of small B LYMPHOCYTES or T LYMPHOCYTES in culture into large blast-like cells able to synthesize DNA and RNA and to divide mitotically. It is induced by INTERLEUKINS; MITOGENS such as PHYTOHEMAGGLUTININS, and by specific ANTIGENS. It may also occur in vivo as in GRAFT REJECTION.	Blast Transformation,Blastogenesis,Lymphoblast Transformation,Lymphocyte Stimulation,Lymphocyte Transformation,Transformation, Blast,Transformation, Lymphoblast,Transformation, Lymphocyte,Activation, Lymphocyte,Stimulation, Lymphocyte
D008222	Lymphokines	Soluble protein factors generated by activated lymphocytes that affect other cells, primarily those involved in cellular immunity.	Lymphocyte Mediators,Mediators, Lymphocyte
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
D002455	Cell Division	The fission of a CELL. It includes CYTOKINESIS, when the CYTOPLASM of a cell is divided, and CELL NUCLEUS DIVISION.	M Phase,Cell Division Phase,Cell Divisions,Division Phase, Cell,Division, Cell,Divisions, Cell,M Phases,Phase, Cell Division,Phase, M,Phases, M
D002460	Cell Line	Established cell cultures that have the potential to propagate indefinitely.	Cell Lines,Line, Cell,Lines, Cell
D005260	Female		Females
D006133	Growth Substances	Signal molecules that are involved in the control of cell growth and differentiation.	Mitogens, Endogenous,Endogenous Mitogens
D006801	Humans	Members of the species Homo sapiens.	Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D000276	Adjuvants, Immunologic	Substances that augment, stimulate, activate, potentiate, or modulate the immune response at either the cellular or humoral level. The classical agents (Freund's adjuvant, BCG, Corynebacterium parvum, et al.) contain bacterial antigens. Some are endogenous (e.g., histamine, interferon, transfer factor, tuftsin, interleukin-1). Their mode of action is either non-specific, resulting in increased immune responsiveness to a wide variety of antigens, or antigen-specific, i.e., affecting a restricted type of immune response to a narrow group of antigens. The therapeutic efficacy of many biological response modifiers is related to their antigen-specific immunoadjuvanticity.	Immunoactivators,Immunoadjuvant,Immunoadjuvants,Immunologic Adjuvant,Immunopotentiator,Immunopotentiators,Immunostimulant,Immunostimulants,Adjuvant, Immunologic,Adjuvants, Immunological,Immunologic Adjuvants,Immunological Adjuvant,Adjuvant, Immunological,Immunological Adjuvants