Related Experiment Video
Updated: Jul 12, 2026

Establishment and Characterization of Three Afatinib-resistant Lung Adenocarcinoma PC-9 Cell Lines Developed with Increasing Doses of Afatinib
Published on: June 26, 2019
Potential role of multi-targeted tyrosine kinase inhibitors in non-small-cell lung cancer
1Department of Clinical and Biological Sciences, University of Torino, Turin, Italy. giorgio.scagliotti@unito.it
Abstract:
Treatment outcomes for patients with metastatic non-small-cell lung cancer (NSCLC) are poor with chemotherapy. In recent years, novel agents that target specific, aberrant molecular pathways in NSCLC have been under evaluation in clinical trials. To date, just two targeted agents have impacted the natural history of the disease--erlotinib and bevacizumab--each of which targets a single molecule in a signalling pathway involved in NSCLC. While modest, the activity of these single-target agents results in improved clinical outcomes, highlighting the potential of agents that target biological pathways in patients with NSCLC. However, as NSCLC is a highly heterogeneous disease, it is likely that agents with multiple targets (e.g. sunitinib, sorafenib, ZD6474, AZD2171 and AMG 706) may have greater activity than those with single-target activity through inhibition of other pathways that may act as salvage or escape mechanisms for malignant cells. New multi-targeted therapeutic agents currently undergoing clinical evaluation have shown promise as single agents, and preclinical studies have indicated that this efficacy may be due at least in part to the inhibition of multiple pathways that may result in a synergistic antitumour effect.
Insights
Targeted therapies show promise for non-small cell lung cancer (NSCLC). Multi-targeted agents may offer greater efficacy than single-target drugs by inhibiting multiple cancer pathways, potentially leading to synergistic antitumor effects.
Area of Science:
- Oncology
- Molecular Biology
- Pharmacology
Background:
- Chemotherapy offers limited treatment outcomes for metastatic non-small cell lung cancer (NSCLC).
- Novel targeted agents are being evaluated in clinical trials for NSCLC.
- Current targeted therapies like erlotinib and bevacizumab show modest but improved clinical outcomes by targeting single molecules.
Purpose of the Study:
- To evaluate the potential of multi-targeted therapeutic agents in treating NSCLC.
- To explore whether multi-targeted agents can overcome limitations of single-target therapies.
- To investigate the synergistic antitumour effects of multi-targeted agents in NSCLC.
Main Methods:
- Review of clinical trials evaluating targeted agents for NSCLC.
- Analysis of preclinical studies on multi-targeted agents (e.g., sunitinib, sorafenib).
- Examination of molecular pathways implicated in NSCLC heterogeneity and resistance.
Main Results:
- Single-target agents like erlotinib and bevacizumab have demonstrated improved outcomes in NSCLC.
- NSCLC's heterogeneity suggests multi-targeted agents may be more effective.
- Preclinical data indicate multi-targeted agents may inhibit multiple pathways, leading to synergistic antitumour effects.
Conclusions:
- Multi-targeted agents hold promise for improved NSCLC treatment outcomes.
- Inhibition of multiple aberrant molecular pathways may be key to overcoming treatment resistance.
- Further clinical evaluation of multi-targeted agents is warranted for NSCLC.
Related Concept Videos
Targeted Cancer Therapies
There are several types of targeted therapies against specific...
Combination Therapies and Personalized Medicine
The combination of the drug acetazolamide and sulforaphane is a good example of combination therapy to treat cancer. The cells in the interior of a large tumor often die due to the hypoxic and...
Transducer Mechanism: Enzyme-Linked Receptors
Major types that are helpful drug targets include:
Mitogens and the Cell Cycle
lncRNA - Long Non-coding RNAs
Treatment for Pulmonary Arterial Hypertension: Receptor Tyrosine Kinase Inhibitors and Calcium Channel Blockers
TKIs, such as imatinib (Gleevec), are particularly effective in tackling the growth and mitogenic factors that become upregulated in PAH patients. These factors contribute to the...
