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- W2023755984 abstract "Coordinated proliferation and differentiation of progenitor cells is the base for production of appropriate numbers of neurons and glia during neuronal development in order to establish normal brain functions. We have used murine embryonal carcinoma P19 cells as an in vitro model for early differentiation to study participation of nicotinic (nAChR) and muscarinic acetylcholine (mAChR) receptors in the proliferation of neural progenitor cells and their differentiation to neurons. We have previously shown that functional nicotinic acetylcholine receptors (nAChRs) already expressed in embryonic cells mediate elevations in cytosolic free calcium concentration ([Ca2+]i) via calcium influx through nAChR channels whereas intracellular stores contribute to nAChR- and mAChR-mediated calcium fluxes in differentiated cells [Resende et al., Cell Calcium 43 (2008) 107-121]. In the present study, we have demonstrated that nicotine provoked inhibition of proliferation in embryonic cells as determined by BrdU labeling. However, in neural progenitor cells nicotine stimulated proliferation which was reversed in the presence of inhibitors of calcium mobilization from intracellular stores, indicating that liberation of intracellular calcium contributed to this proliferation induction. Muscarine induced proliferation stimulation in progenitor cells by activation of Galphaq/11-coupled M1, M3 and M5 receptors and intracellular calcium stores, whereas Galphai/o-protein coupled M2 receptor activity mediated neuronal differentiation." @default.
- W2023755984 created "2016-06-24" @default.
- W2023755984 creator A5028934445 @default.
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- W2023755984 creator A5078072284 @default.
- W2023755984 date "2008-04-01" @default.
- W2023755984 modified "2023-10-18" @default.
- W2023755984 title "Role of acetylcholine receptors in proliferation and differentiation of P19 embryonal carcinoma cells" @default.
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