Inhibition of p90 ribosomal S6 kinase potentiates cisplatin activity in A549 human lung adenocarcinoma cells. (15th July 2020)

• Record Type: Journal Article
• Authors: Abdulrahman, Nabeel; Siveen, Kodappully Sivaraman; Joseph, Jensa Mariam; Osman, Aisha; Yalcin, Huseyin C.; Hasan, Anwarul; Uddin, Shahab; Mraiche, Fatima
• Is Part Of: Journal of pharmacy and pharmacology. Volume 72:Number 11(2020)
• Page Start: 1536
• Page End: 1545
• Publication Date: 2020-07-15
• Subjects: BI‐D1870 -- cell migration -- cisplatin -- lung adenocarcinoma -- p90 ribosomal s6 kinase; Pharmacy -- Periodicals; Pharmacology -- Periodicals; 615.1
• DOI: 10.1111/jphp.13335
• Languages: English
• ISSNs: 0022-3573

Abstract

Abstract: Objective: Cisplatin is a standard treatment approach against lung adenocarcinoma. Resistance to cisplatin and the toxic side effects of cisplatin continue to remain a challenge. Combining drugs with different mechanisms is being investigated as a means to overcome these challenges. In ovarian cancer cells, the knockdown of RSK2 increased the sensitivity of cisplatin. RSK is a downstream mediator of the MAPK pathway that is responsible for cell survival, proliferation and migration. Methods: Our study examined the effect of cisplatin, BI‐D1870 (RSK inhibitor) or their combination on cell migration, apoptosis, autophagy and cell cycle in A549 human lung adenocarcinoma cells. Key Findings: The combination of cisplatin and BI‐D1870 potentiated the antimigration rate, the activation of caspases‐3 and was associated with a significant decrease in RSK1 and ERK expression when compared to cisplatin alone. The combination of cisplatin and BI‐D1870 also resulted in the inhibition of LC3 II to LC3 I expression when compared to BI‐D1870. The combination of cisplatin and BI‐D1870 increased the number of cells in the G2/M‐phase when compared to cisplatin alone. Conclusions: These findings suggest that combining cisplatin with agents that target the RSK mediated cell survival pathway, may potentiate the cisplatin effect in lung adenocarcinoma.