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Bordoloi, Devivasha; Harsha, Choudhary; Padmavathi, Ganesan; Banik, Kishore; Sailo, Bethsebie Lalduhsaki; Roy, Nand Kishor; Girisa, Sosmitha; Thakur, Krishan Kumar; Khwairakpam, Amrita Devi; Chinnathambi, Arunachalam; Alahmadi, Tahani Awad; Alharbi, Sulaiman Ali; Shakibaei, Mehdi and Kunnumakkara, Ajaikumar B. (2022): Loss of TIPE3 reduced the proliferation, survival and migration of lung cancer cells through inactivation of Akt/mTOR, NF-kappa B, and STAT-3 signaling cascades. In: Life Sciences, Vol. 293, 120332

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Lung cancer is the foremost cause of cancer related mortality among men and one of the most fatal cancers among women. Notably, the 5-year survival rate of lung cancer is very low;5% in developing countries. This low survival rate can be attributed to factors like late stage diagnosis, rapid postoperative recurrences in the patients undergoing treatment and development of chemoresistance against different agents used for treating lung cancer. Therefore, in this study we evaluated the potential of a recently identified protein namely TIPE3 which is known as a transfer protein of lipid second messengers as a lung cancer biomarker. TIPE3 was found to be significantly upregulated in lung cancer tissues indicating its role in the positive regulation of lung cancer. Supporting this finding, knockout of TIPE3 was also found to reduce the proliferation, survival and migration of lung cancer cells and arrested the G2 phase of cell cycle through inactivation of Akt/mTOR, NF-kappa B, STAT-3 signaling. It is well evinced that tobacco is the major risk factor of lung cancer which affects both males and females. Therefore, this study also evaluated the involvement of TIPE3 in tobacco mediated lung carcinogenesis. Notably, this study shows for the first time that TIPE3 positively regulates tobacco induced proliferation, survival and migration of lung cancer through modulation of Akt/mTOR signaling. Thus, TIPE3 plays critical role in the pathogenesis of lung cancer and hence it can be specifically targeted to develop novel therapeutic strategies.

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