PMID- 2473769 OWN - NLM STAT- MEDLINE DCOM- 19890831 LR - 20161123 IS - 0724-6803 (Print) IS - 0724-6803 (Linking) VI - 3 IP - 4 DP - 1987 TI - Activation of murine B cells with Salmonella typhimurium mitogen (STM), lipopolysaccharide (LPS), and dextran sulfate (DxS). I. Cell-cycle analysis and induction of cytoplasmic immunoglobulin. PG - 215-9 AB - There have been two recent reports concerning a B cell-specific mitogen that induces proliferation, but not differentiation of rat and human B cells. This mitogen, which is derived from Salmonella typhimurium (STM), appears to be providing the signals required for anti-immunoglobulin-treated (anti-Ig) B cells to enter cycle and divide, but may not be inducing responsiveness to B cell differentiation factors (BCDF). In this report, we have compared STM to the other known murine B cell polyclonal activators: lipopolysaccharide (LPS), dextran sulfate (DxS), and the combination of LPS/DxS. STM was the most potent stimulus of B cell proliferation as determined by uptake of 3H-thymidine, viable cell numbers and cell cycle analysis utilizing acridine orange (AO). STM did not induce significant proliferation of murine T lymphocytes. In addition, the proliferative effect of STM on B cells shows minimal, if any, macrophage dependence. However, in contrast to its effect on human and rat B cells, STM induces differentiation of murine B cells. The levels of cytoplasmic Ig induced by STM are equivalent or greater to those induced by LPS/DxS. Thus, in the murine system, STM will be useful as a polyclonal activator which induces proliferation and differentiation of the vast majority of the B cell population without stringent accessory cell requirements. FAU - Brooks, K H AU - Brooks KH AD - Department of Microbiology, University of Texas Health Science Center, Southwestern Medical School, Dallas 75235. FAU - Vitetta, E S AU - Vitetta ES LA - eng GR - AI-11851/AI/NIAID NIH HHS/United States PT - Comparative Study PT - Journal Article PT - Research Support, U.S. Gov't, P.H.S. PL - United States TA - J Mol Cell Immunol JT - The Journal of molecular and cellular immunology : JMCI JID - 8405005 RN - 0 (Dextrans) RN - 0 (Immunoglobulins) RN - 0 (Lipopolysaccharides) RN - 0 (Mitogens) RN - 9042-14-2 (Dextran Sulfate) SB - IM MH - Animals MH - B-Lymphocytes/cytology/*immunology MH - Cell Cycle MH - Cytoplasm/immunology MH - Dextran Sulfate MH - Dextrans/pharmacology MH - Female MH - Immunoglobulins/*biosynthesis MH - In Vitro Techniques MH - Lipopolysaccharides/pharmacology MH - *Lymphocyte Activation MH - Mice MH - Mitogens/pharmacology MH - Salmonella typhimurium/immunology EDAT- 1987/01/01 00:00 MHDA- 1987/01/01 00:01 CRDT- 1987/01/01 00:00 PHST- 1987/01/01 00:00 [pubmed] PHST- 1987/01/01 00:01 [medline] PHST- 1987/01/01 00:00 [entrez] PST - ppublish SO - J Mol Cell Immunol. 1987;3(4):215-9.