Title : Nicotine-induced survival signaling in lung cancer cells is dependent on their p53 status while its down-regulation by curcumin is independent.

Pub. Date : 2010 Aug 20

PMID : 20727180






11 Functional Relationships(s)
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Protein Name
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1 Nicotine-induced survival signaling in lung cancer cells is dependent on their p53 status while its down-regulation by curcumin is independent. Nicotine tumor protein p53 Homo sapiens
2 We observed that the proliferative index of nicotine is different in the lung cancer cell lines H1299 (p53-/-) and A549 (p53+/+) which indicates that the mode of up-regulation of survival signals by nicotine might be different in cells with and without p53. Nicotine tumor protein p53 Homo sapiens
3 We observed that the proliferative index of nicotine is different in the lung cancer cell lines H1299 (p53-/-) and A549 (p53+/+) which indicates that the mode of up-regulation of survival signals by nicotine might be different in cells with and without p53. Nicotine tumor protein p53 Homo sapiens
4 We observed that the proliferative index of nicotine is different in the lung cancer cell lines H1299 (p53-/-) and A549 (p53+/+) which indicates that the mode of up-regulation of survival signals by nicotine might be different in cells with and without p53. Nicotine tumor protein p53 Homo sapiens
5 We observed that the proliferative index of nicotine is different in the lung cancer cell lines H1299 (p53-/-) and A549 (p53+/+) which indicates that the mode of up-regulation of survival signals by nicotine might be different in cells with and without p53. Nicotine tumor protein p53 Homo sapiens
6 We observed that the proliferative index of nicotine is different in the lung cancer cell lines H1299 (p53-/-) and A549 (p53+/+) which indicates that the mode of up-regulation of survival signals by nicotine might be different in cells with and without p53. Nicotine tumor protein p53 Homo sapiens
7 We observed that the proliferative index of nicotine is different in the lung cancer cell lines H1299 (p53-/-) and A549 (p53+/+) which indicates that the mode of up-regulation of survival signals by nicotine might be different in cells with and without p53. Nicotine tumor protein p53 Homo sapiens
8 The hypothesis was confirmed when lower concentrations of nicotine induced NF-kappaB in two more lung cancer cells, Hop-92 and NCI-H522 with mutant p53 status. Nicotine tumor protein p53 Homo sapiens
9 Silencing of p53 in A549 using siRNA made the cells susceptible to nicotine-induced NF-kappaB nuclear translocation as in A549 DN-p53 cells. Nicotine tumor protein p53 Homo sapiens
10 Silencing of p53 in A549 using siRNA made the cells susceptible to nicotine-induced NF-kappaB nuclear translocation as in A549 DN-p53 cells. Nicotine tumor protein p53 Homo sapiens
11 CONCLUSIONS: The present study reveals a detrimental role of nicotine especially in lung cancer patients with impaired p53 status and identifies curcumin as a potential chemopreventive. Nicotine tumor protein p53 Homo sapiens