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Establishment and Characterization of Three Afatinib-resistant Lung Adenocarcinoma PC-9 Cell Lines Developed with Increasing Doses of Afatinib
Published on: June 26, 2019
Current and future targeted therapies for non-small-cell lung cancers with aberrant EGF receptors
Shanthi Kanthala1, Sandeep Pallerla, Seetharama Jois
1Basic Pharmaceutical Sciences, School of Pharmacy, University of Louisiana at Monroe, Monroe, LA 71201, USA.
Abstract:
Expression of the EGF receptors (EGFRs) is abnormally high in many types of cancer, including 25% of lung cancers. Successful treatments target mutations in the EGFR tyrosine kinase domain with EGFR tyrosine kinase inhibitors (TKIs). However, almost all patients develop resistance to this treatment, and acquired resistance to first-generation TKI has prompted the clinical development of a second generation of EGFR TKI. Because of the development of resistance to treatment of TKIs, there is a need to collect genomic information about EGFR levels in non-small-cell lung cancer patients. Herein, we focus on current molecular targets that have therapies available as well as other targets for which therapies will be available in the near future.
Insights
High expression of epidermal growth factor receptors (EGFRs) occurs in many cancers. Understanding EGFR mutations and resistance to tyrosine kinase inhibitors (TKIs) is crucial for developing new lung cancer treatments.
Area of Science:
- Oncology
- Molecular Biology
- Genetics
Background:
- Epidermal growth factor receptor (EGFR) overexpression is common in various cancers, notably in 25% of lung cancer cases.
- EGFR tyrosine kinase inhibitors (TKIs) are effective treatments targeting specific EGFR mutations.
- Acquired resistance to first-generation EGFR TKIs necessitates the development of second-generation inhibitors.
Purpose of the Study:
- To review current molecular targets for non-small-cell lung cancer (NSCLC) therapies.
- To highlight emerging therapeutic targets for NSCLC based on genomic information.
- To address the challenge of acquired resistance to EGFR TKIs.
Main Methods:
- Literature review of current and emerging molecular targets in NSCLC.
- Analysis of genomic data related to EGFR expression and mutations.
- Discussion of TKI resistance mechanisms and development of next-generation inhibitors.
Main Results:
- EGFR mutations are key targets for TKI therapy in NSCLC.
- Acquired resistance to TKIs is a significant clinical challenge.
- Genomic profiling is essential for personalized NSCLC treatment strategies.
Conclusions:
- Continued research into EGFR mutations and resistance mechanisms is vital for improving NSCLC patient outcomes.
- Development of novel TKIs and combination therapies is ongoing.
- Genomic information guides the selection of targeted therapies for NSCLC.
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