Abstract
This paper describes the establishment of a new polyclonal human neuroblastoma cell line NAL-GT. Pharmacological characterisation of a cell line comprising > 70% neurones using radioligand binding, Ins(1,4,5)trisphosphate (Ins(1,4,5)P 3) mass formation, intracellular Ca 2+ ([Ca 2+] i) determinations and cyclic adenosine monophosphate (cAMP) formation has been performed. Carbachol (1 mM) and noradrenaline (l0, μM) increased Ins(1,4,5)P 3 formation 2-3-fold basal. Noradrenaline (l0 μM) and morphine (10 μM) reduced forskolin stimulated cAMP formation by 19.7 and 30.5%, respectively. Carbachol (1 mM) and K+ (50 mM) increased [Ca 2+] i. These data indicate that polyclonal (heterogeneous) NAL-GT cells express muscarinic, alphas and alpha 2 adrenoceptors, opioid receptors and voltage-sensitive Ca 2+ channels and may prove useful in the study of the cellular basis of drug action.
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