PMID- 8345199 OWN - NLM STAT- MEDLINE DCOM- 19930908 LR - 20141120 IS - 0022-1767 (Print) IS - 0022-1767 (Linking) VI - 151 IP - 4 DP - 1993 Aug 15 TI - Transforming growth factor-beta suppresses activation and proliferation of microglia in vitro. PG - 2150-8 AB - Transforming growth factor-beta (TGF-beta) has been shown to be produced in the central nervous system (CNS). The functions of TGF-beta, however, remain to be elucidated. We investigated the effects of TGF-beta on the proliferation, activation, and cytokine production of isolated microglia in vitro. TGF-beta dose-dependently suppressed the acid phosphatase activity of and formation of superoxide anion by LPS activated microglia. It also suppressed the IFN-gamma-induced expression of class II MHC Ag- and the production of cytokines, IL-1, IL-6, and TNF-alpha, by these cells. TGF-beta also inhibited the proliferation of microglia that was induced by either GM-CSF or M-CSF. Because various immunoregulatory cytokines are produced in the CNS that serve as autocrine or paracrine mediators it is suggested that TGF-beta could be a negative regulator in the CNS cytokine network. It may play a role in the development of various disease processes in the CNS by inhibiting the function of microglia in inflammation or in immunoregulation. FAU - Suzumura, A AU - Suzumura A AD - Department of Neurology, School of Medicine, Fujita Health University, Aichi, Japan. FAU - Sawada, M AU - Sawada M FAU - Yamamoto, H AU - Yamamoto H FAU - Marunouchi, T AU - Marunouchi T LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - United States TA - J Immunol JT - Journal of immunology (Baltimore, Md. : 1950) JID - 2985117R RN - 0 (Cytokines) RN - 0 (Histocompatibility Antigens Class II) RN - 0 (Oligodeoxyribonucleotides) RN - 0 (Transforming Growth Factor beta) SB - IM MH - Animals MH - Base Sequence MH - Cell Division/drug effects MH - Cells, Cultured MH - Cytokines/*genetics MH - Gene Expression/drug effects MH - Genes, MHC Class II MH - Histocompatibility Antigens Class II/*genetics MH - In Vitro Techniques MH - Mice MH - Mice, Inbred C3H MH - Molecular Sequence Data MH - Neuroglia/cytology/*physiology MH - Oligodeoxyribonucleotides/chemistry MH - Transforming Growth Factor beta/*pharmacology EDAT- 1993/08/15 00:00 MHDA- 1993/08/15 00:01 CRDT- 1993/08/15 00:00 PHST- 1993/08/15 00:00 [pubmed] PHST- 1993/08/15 00:01 [medline] PHST- 1993/08/15 00:00 [entrez] PST - ppublish SO - J Immunol. 1993 Aug 15;151(4):2150-8.