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Updated: Aug 20, 2026

Therapy Testing in a Spheroid-based 3D Cell Culture Model for Head and Neck Squamous Cell Carcinoma
Published on: April 20, 2018
The epidermal growth factor receptor signaling network in head and neck carcinogenesis and implications for targeted
Rebecca G Pomerantz1, Jennifer Rubin Grandis
1Department of Otolaryngology, University of Pittsburgh School of Medicine and Cancer Institute, 200 Lothrop Street, Pittsburgh, PA 15213, USA.
Abstract:
Improved understanding of the molecular signaling pathways that mediate cellular transformation has led to the development of novel strategies for the treatment of cancer. The epidermal growth factor receptor (EGFR), a transmembrane protein with intrinsic tyrosine kinase activity, transduces important signals from the surface of epithelial cells to the intracellular domain. Aberrant signaling through EGFR plays a key role in the carcinogenesis of squamous cell carcinomas of the head and neck (SCCHN). SCCHN tend to express high levels of EGFR, and the degree of expression correlates with poor clinical outcome. Since EGFR is present at much higher levels in cancerous lesions than in normal epithelial tissue, the receptor has been implicated as a highly specific therapeutic target for the treatment of SCCHN. EGFR can be abrogated at the extracellular level using either monoclonal antibodies or toxin conjugates that compete with the natural ligand at the binding site of the receptor, and targeting of the EGFR intracellular domain has been achieved by specific inhibitors of tyrosine kinase activity. Antisense strategies use synthesized DNA or RNA oligonucleotides to block the translation of the mRNA sequences that code for the production of the EGFR or other proteins with a role in EGFR-mediated cell signaling. Clinical evaluation of EGFR-specific monoclonal antibodies and tyrosine kinase inhibitors has demonstrated limited toxicity in SCCHN patients, and concurrent administration with standard cytotoxic therapies has produced additive or synergistic antitumor effects.
Insights
Targeting the epidermal growth factor receptor (EGFR) offers a promising strategy for treating squamous cell carcinomas of the head and neck (SCCHN). Novel therapies targeting EGFR show potential for improved cancer treatment outcomes.
Area of Science:
- Oncology
- Molecular Biology
- Cancer Therapeutics
Background:
- Aberrant signaling of the epidermal growth factor receptor (EGFR) is crucial in head and neck squamous cell carcinoma (HSCSC) development.
- High EGFR expression in HSCSC correlates with poor prognosis, making it a specific therapeutic target.
- EGFR is a transmembrane protein that regulates intracellular signals in epithelial cells.
Purpose of the Study:
- To review novel therapeutic strategies targeting the epidermal growth factor receptor (EGFR) for head and neck squamous cell carcinoma (HSCSC).
- To discuss the role of EGFR in carcinogenesis and its potential as a specific therapeutic target.
- To evaluate the efficacy and safety of EGFR-targeted therapies in HSCSC treatment.
Main Methods:
- Review of molecular signaling pathways involved in cellular transformation.
- Analysis of EGFR expression levels in cancerous versus normal tissues.
- Evaluation of therapeutic strategies including monoclonal antibodies, toxin conjugates, tyrosine kinase inhibitors, and antisense strategies.
- Clinical assessment of EGFR-specific therapies in patients with SCCHN.
Main Results:
- EGFR-specific monoclonal antibodies and tyrosine kinase inhibitors exhibit low toxicity in SCCHN patients.
- Targeting EGFR extracellularly can be achieved with antibodies or toxin conjugates.
- Intracellular EGFR targeting utilizes specific tyrosine kinase inhibitors.
- Antisense strategies block EGFR production by targeting mRNA.
- Combined EGFR-targeted therapies with standard treatments show additive or synergistic antitumor effects.
Conclusions:
- EGFR is a validated and specific therapeutic target for head and neck squamous cell carcinoma (HSCSC).
- Various strategies targeting EGFR, including antibodies and kinase inhibitors, are effective and well-tolerated.
- Combination therapies involving EGFR-targeted agents hold promise for enhanced SCCHN treatment outcomes.
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