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Comparison of epithelial mesenchymal transition mediated tyrosine kinase inhibitor resistance in non-small cell lung cancer cell lines with wild type EGFR and mutant type EGFR.
This study investigates the role of epithelial-mesenchymal transition (EMT) in the development of resistance against TKIs in NSCLC. Currently, the role of p120-catenin, Kaiso factor and PRMT-1 in reversal of EMT in T790M mutated and TKI-resistant NSCLC cells is a new line of study. In this investigation we found upregulation of cytoplasmic p120-catenin, and it was co-localized with Kaiso factor. In the nucleus, binding of p120-catenin to Kaiso factor initiates transcription by activating EMT-transcription factors such as Snail, Slug, Twist, and ZEB1. PRMT-1 was also found to be upregulated, which induces methylation of Twi...
Source: Biochemical and Biophysical Research communications - January 11, 2018 Category: Biochemistry Authors: Iderzorig T, Kellen J, Osude C, Singh S, Woodman JA, Garcia C, Puri N Tags: Biochem Biophys Res Commun Source Type: research

Mechanism of c-Met and EGFR tyrosine kinase inhibitor resistance through epithelial mesenchymal transition in non-small cell lung cancer.
Abstract According to Cancer Research UK currently available estimates, 14.1 million new lung cancer cases were diagnosed and a staggering 8.2 million people worldwide died from lung cancer in 2012. EGFR and c-Met are two tyrosine kinase receptors most commonly overexpressed or mutated in Non-small Cell Lung Cancer (NSCLC) resulting in increased proliferation and survival of lung cancer cells. Tyrosine kinase inhibitors (TKIs), such as Erlotinib, approved by the FDA as first/second line therapy for NSCLC patients have limited clinical efficacy due to acquired resistance. In this manuscript, we investigate and disc...
Source: Biochemical and Biophysical Research communications - July 6, 2016 Category: Biochemistry Authors: Rastogi I, Rajanna S, Webb A, Chhabra G, Foster B, Webb B, Puri N Tags: Biochem Biophys Res Commun Source Type: research