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. 2016 Feb 24;11(2):e0149120. doi: 10.1371/journal.pone.0149120

Fig 2. Nicotine promoted BGC823 cell proliferation through α5-nAChR.

Fig 2

A: BGC823 were exposed to nicotine (0, 1, 10, 100, 500, 1000μM) for 24, 48, and 72h, respectively. Nicotine promoted cell proliferation in a time-dependent and concentration-dependent relation; B: Treatment of nicotine at the dose of nicotine (0, 1, 10, 100, 500, 1000μM) for 24 hours promoted the expression of α5-nAChR protein in a dose-dependent manner; C: Cells were transfected with α5-nAChR specific siRNA (si-α5) and then treated with nicotine at 100μM for 24 hours. α5-nAChR expressions were significantly decreased compared with scrambled nonspecific control siRNA (si-NC) and Nic (Nicotine) + si-NC group; D: By comparison with the si-NC, transfection with si-α5 considerably inhibited cell proliferation. *P < 0.05 vs. the untreated control; each experiment was performed in triplicate.