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Updated: Aug 21, 2026

Assessment of Resistance to Tyrosine Kinase Inhibitors by an Interrogation of Signal Transduction Pathways by Antibody Arrays
Published on: September 19, 2018
[The place of targeted treatments: receptor tyrosine kinase inhibitors]
1Service d'Oncologie Médicale, CHU Avicenne, 125, route de Stalingrad, 93009 Bobigny. jeanne-marie.brechot@avc.ap-hop-paris.fr
Abstract:
Targeted biological treatments are aimed at correcting one or several abnormalities inherent to cancer cells by specifically affecting one or several identified abnormal cell mechanisms. Many signalisation pathways involve membrane receptors of the tyrosine kinase receptor family, notably the HER receptors (with, first-line, EGFR or epidermal growth factor receptor) and the VEGF receptors. These receptors can be blocked either by a monoclonal antibody directed against the ligand (i.e., bevacizumab or anti-VEGF Avastin) or against the extra-cellular segment of the receptor (i.e., cetuximab or anti-EGFR Erbitux) or by tyrosine kinase inhibitors of the intracellular segment of the receptor (i.e., gefitinib or Iressa and erlotinib or Tarceva). The preliminary studies with these new treatments in pulmonary oncology are presented.
Insights
Targeted biological treatments, including monoclonal antibodies and tyrosine kinase inhibitors, show promise in pulmonary oncology by targeting abnormal cancer cell mechanisms like HER and VEGF receptors.
Area of Science:
- Oncology
- Molecular Biology
- Pharmacology
Context:
- Signal transduction pathways in cancer cells often involve receptor tyrosine kinases, such as epidermal growth factor receptor (EGFR) and vascular endothelial growth factor receptor (VEGF).
- Aberrant signaling through these pathways drives tumor growth and progression in various cancers, including lung cancer.
Purpose:
- To review preliminary studies on targeted biological treatments in pulmonary oncology.
- To discuss the mechanisms of action for novel cancer therapies targeting specific molecular abnormalities.
Summary:
- Targeted therapies aim to correct specific cancer cell abnormalities by interfering with key signaling pathways.
- Examples include monoclonal antibodies (e.g., bevacizumab targeting VEGF, cetuximab targeting EGFR) and tyrosine kinase inhibitors (e.g., gefitinib, erlotinib targeting intracellular receptor segments).
- These agents block either the ligand or the receptor itself, disrupting downstream signaling.
Impact:
- Preliminary findings suggest these targeted treatments offer new therapeutic strategies for lung cancer.
- Understanding these targeted approaches is crucial for advancing personalized medicine in oncology.
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