DNA polymerase activities in differentiating mouse neuroblastoma N-18 cells.

The toxicity of chlorpyrifos towards differentiating mouse N2a neuroblastoma cells.

The aim of this work was to study the effects of chlorpyrifos (CPF) on the outgrowth of axons by differentiating mouse N2a neuroblastoma cells. This was achieved by morphological, Western blotting and enzymatic analyses of cells induced to differentiate in the presence and absence of CPF added either at the same time (co-differentiation) or 16 h after (post-differentiation) the induction of cel...

Regulation of cyclic adenosine 3':5'-monophosphate-binding protein in N-18 mouse neuroblastoma cells.

The regulation of cyclic adenosine 3':5'-monophosphate (cAMP)-binding protein in N-18 neuroblastoma cells in tissue culture was studied by the covalent incorporation of 8-azido-cyclic adenosine 3':5'-[32P]monophosphate, together with the techniques of sodium dodecyl sulfate:polyacrylamide gel electrophoresis and autoradiography. Greater than 95% of the total cAMP binding activity of N-18 neurob...

Tubulin pools in differentiating neuroblastoma cells

The distribution of tubulin in soluble, reversibly stabilized (assembled) and insoluble forms has been determined in neuroblastoma cells undergoing microtubule-dependent neurite elongation. Procedures were developed to obtain reproducible tubulin fractions and to assay total tubulin. Radioimmunoassays showed that both differentiated and nondifferentiated cell contained approximately 4 pg of tub...

anti-proliferative and apoptotic activities of chrysin in neuroblastoma cells

Increased Rate of Acetylcholinesterase Synthesis in Differentiating Neuroblastoma Cells

When neuroblastoma cells (N18) in vitro are maintained in the absence of serum, the specific activity of AChE begins to rise rapidly after an initial lag period of about 2-3 days, reaching a maximum level (10-20-fold increase) by 7 days after induction. In order to clarify the mechanism of induction, it was necessary to measure the rate of AChE synthesis and its sensitivity to metabolic inhibit...