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Updated: Aug 30, 2025

Establishment and Characterization of Three Afatinib-resistant Lung Adenocarcinoma PC-9 Cell Lines Developed with Increasing Doses of Afatinib
Published on: June 26, 2019
An overview of epithelial growth factor receptor (EGFR) inhibitors in cancer therapy
Khalid Saad Alharbi1, Mohammad Arshad Javed Shaikh2, Obaid Afzal3
1Department of Pharmacology, College of Pharmacy, Jouf University, Sakaka, Al-Jouf, Saudi Arabia.
Abstract:
Epithelial growth factor receptor (EGFR), a transmembrane receptor on the cell surface, carries extracellular messages into the cell and alters the activity of the nucleus through tyrosine signalling. EGFR-targeted treatments have influenced the new era of precision oncology throughout the last few decades. Despite significant progress, long-term remission from solid tumours is still a distant goal for many oncologists. There are several methods by which tumour cells alter the activity of this protein in solid tumours. EGFR-related oncogenic pathways, resistance mechanisms, and novel avenues to suppress tumour development and metastatic spread were discovered in clinical specimens using preclinical models (cell cultures, xenografts, mouse models), which were then validated in those specimens. EGFR has been implicated in the onset and advancement of a variety of cancers, according to research. An overview of EGFR's structural anatomy and physiology, its role in cancers, and clinical studies that target EGFR in various tumours are included in this review.
Insights
Targeting epithelial growth factor receptor (EGFR) is key in precision oncology for solid tumors. This review explores EGFR
Area of Science:
- Oncology and Molecular Biology: Focuses on cell surface receptors and intracellular signaling pathways.
Background:
- Epithelial growth factor receptor (EGFR) is a transmembrane protein crucial for cell signaling.
- EGFR-targeted therapies have advanced precision oncology but long-term remission in solid tumors remains a challenge.
- Tumor cells employ various strategies to manipulate EGFR activity, leading to resistance.
Purpose of the Study:
- To provide a comprehensive overview of EGFR's structure, function, and role in cancer development.
- To review current clinical strategies targeting EGFR in various solid tumors.
- To discuss resistance mechanisms and novel therapeutic approaches against EGFR in oncology.
Main Methods:
- Review of preclinical models including cell cultures, xenografts, and mouse models.
- Analysis of clinical specimens to identify EGFR-related oncogenic pathways and resistance mechanisms.
- Synthesis of existing literature on EGFR's role in cancer and clinical trial outcomes.
Main Results:
- EGFR plays a significant role in the initiation and progression of diverse cancers.
- Preclinical models have elucidated key oncogenic pathways and resistance mechanisms associated with EGFR.
- Clinical studies demonstrate the impact of EGFR-targeted therapies across various tumor types.
Conclusions:
- Understanding EGFR's multifaceted role is crucial for developing effective cancer treatments.
- Novel strategies are needed to overcome resistance and improve long-term outcomes in EGFR-targeted therapy.
- Continued research into EGFR pathways holds promise for future cancer therapies.
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