title: Differential effect of sodium butyrate on cyclic AMP phosphodiesterase activities in butyrate sensitive and resistant mastocytoma cells.
abstract: The effect of sodium butyrate on the intracellular cyclic AMP levels and the activities of cyclic AMP-regulating enzymes were examined in two types of mastocytoma p-815 cells in culture: one type (S cell) was sensitive and the other (R cell) was resistant to the induction of differentiation by sodium butyrate. In the presence of sodium butyrate, adenylate cyclase activity increased in both S and R cells to the same degree, whereas the level of cyclic AMP was elevated only in S cells. Cyclic AMP phosphodiesterase activity increased in R cells but not in S cells. Cyclic AMP phosphodiesterase activities of two cell populations differed in their response to sodium butyrate and they seem to have an important role in regulating cellular level of cyclic AMP that might be an important factor in controlling cell differentiation.
mesh_terms: D015105:3',5'-Cyclic-AMP Phosphodiesterases / Q000378:metabolism*; D000262:Adenylyl Cyclases / Q000378:metabolism; D000818:Animals; D002087:Butyrates / Q000494:pharmacology*; D020148:Butyric Acid; D002453:Cell Cycle / Q000187:drug effects; D002454:Cell Differentiation / Q000187:drug effects; D002460:Cell Line; D000242:Cyclic AMP / Q000378:metabolism*; D004351:Drug Resistance; D006632:Histamine / Q000378:metabolism; D012515:Mast-Cell Sarcoma / Q000201:enzymology*; D051379:Mice; D012701:Serotonin / Q000378:metabolism
chemical_list: D002087:Butyrates; D020148:Butyric Acid; D012701:Serotonin; D006632:Histamine; D000242:Cyclic AMP; D015105:3',5'-Cyclic-AMP Phosphodiesterases; D000262:Adenylyl Cyclases