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Identification of Intracellular Signaling Events Induced in Viable Cells by Interaction with Neighboring Cells Undergoing Apoptotic Cell Death
Published on: December 27, 2016
Drug-target interactions: only the first step in the commitment to a programmed cell death?
1Toxicology Group, Pharmaceutical Sciences Institute, Aston University, Birmingham, UK.
Abstract:
The search for novel antitumour drugs has reached a plateau phase. The carcinomas remain almost as intractable as they did 40 years ago and the need for effective therapy is pressing. There is an argument that the current pharmacopoeia is sufficient but, to be effective, the biochemical mechanisms of drug resistance must be circumvented. In tackling the question of why certain cancer cells are resistant, the converse question of why others are sensitive still remains to be answered fully. Asking the fundamental question of why and how a cell dies may provide clues as to what avenues lie open for improved chemotherapy. In this review we survey the recent literature on cell death and we argue that it is possible that the outcome of chemotherapy may be determined by the response of the cell to the formation of the drug-target complex, and/or its sequellae, rather than to the biochemical changes brought about by the drug alone. One of these responses, determined by the phenotype of the cell, may be activation of a genetic programme for cell death.
Insights
Novel antitumour drug discovery faces challenges due to cancer cell resistance. Understanding cell death mechanisms, rather than just drug action, may unlock more effective chemotherapy strategies by targeting cellular responses.
Area of Science:
- Oncology
- Molecular Biology
- Pharmacology
Background:
- Antitumour drug development has plateaued, with carcinomas remaining highly resistant to current therapies.
- Overcoming drug resistance is critical for advancing cancer treatment, necessitating a deeper understanding of cellular sensitivity and resistance mechanisms.
Purpose of the Study:
- To review recent literature on cell death mechanisms in cancer.
- To explore the hypothesis that cell response to drug-target interactions, not just drug biochemistry, dictates chemotherapy outcomes.
Main Methods:
- Literature review of recent research on cell death.
- Analysis of the role of cellular phenotype in response to chemotherapy.
Main Results:
- Chemotherapy effectiveness may depend on the cell's reaction to the drug-target complex and subsequent events.
- Cellular phenotype influences the activation of programmed cell death pathways in response to treatment.
Conclusions:
- Rethinking chemotherapy's mechanism of action to include cellular response pathways is crucial for improving antitumour drug efficacy.
- Targeting programmed cell death offers a promising avenue for overcoming cancer drug resistance.
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