Atish Mohanty, Arin Nam, Alex Pozhitkov, Lu Yang, Saumya Srivastava, Anusha Nathan, Xiwei Wu, Isa Mambetsariev, Michael Nelson, A R Subbalakshmi, Linlin Guo, Mohd W Nasser, Surinder K Batra, John Orban, Mohit Kumar Jolly, Erminia Massarelli, Prakash Kulkarni, Ravi Salgia
Tumor heterogeneity and cisplatin resistance are major causes of tumor relapse and poor survival. Here, we show that in lung cancer, interaction between paxillin (PXN) and integrin β4 (ITGB4), components of the focal adhesion (FA) complex, contributes to cisplatin resistance. Knocking down PXN and ITGB4 attenuated cell growth and improved cisplatin sensitivity, both in 2D and 3D cultures. PXN and ITGB4 independently regulated expression of several genes. In addition, they also regulated expression of common genes including USP1 and VDAC1, which are required for maintaining genomic stability and mitochondrial function, respectively...
August 22, 2020: IScience