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Updated: Jun 25, 2026

Flow Cytometric Analysis of Apoptotic Biomarkers in Actinomycin D-Treated SiHa Cervical Cancer Cells
Published on: August 26, 2021
Biomarkers of apoptosis
1Clinical and Experimental Pharmacology Group, Paterson Institute for Cancer Research, University of Manchester, Manchester, UK.
Abstract:
Within the era of molecularly targeted anticancer agents, it has become increasingly important to provide proof of mechanism as early on as possible in the drug development cycle, especially in the clinic. Selective activation of apoptosis is often cited as one of the major goals of cancer chemotherapy. Thus, the present minireview focuses on a discussion of the pros and cons of a variety of methodological approaches to detect different components of the apoptotic cascade as potential biomarkers of programmed cell death. The bulk of the discussion centres on serological assays utilising the technique of ELISA, since here there is an obvious advantage of sampling multiple time points. Potential biomarkers of apoptosis including circulating tumour cells, cytokeratins and DNA nucleosomes are discussed at length. However, accepting that a single biomarker may not have the power to predict proof of concept and patient outcome, it is clear that in the future more emphasis will be placed on technologies that can analyse panels of biomarkers in small volumes of samples. To this end the increased throughput afforded by multiplex ELISA technologies is discussed.
Insights
Detecting apoptosis biomarkers early is crucial for targeted cancer drug development. This review discusses methods like ELISA for apoptosis cascade components, highlighting multiplex assays for future biomarker panels.
Area of Science:
- Oncology
- Molecular Biology
- Biochemistry
Background:
- Targeted anticancer agents require early proof of mechanism in clinical development.
- Selective apoptosis induction is a primary goal in cancer chemotherapy.
- Identifying reliable biomarkers for apoptosis is essential for assessing drug efficacy.
Purpose of the Study:
- To review and compare methodologies for detecting apoptosis biomarkers.
- To discuss the advantages and limitations of various detection techniques.
- To explore the potential of multiplex assays for analyzing biomarker panels.
Main Methods:
- Discussion of methodological approaches for detecting apoptosis components.
- Focus on serological assays, particularly Enzyme-Linked Immunosorbent Assay (ELISA).
- Evaluation of biomarkers such as circulating tumor cells, cytokeratins, and DNA nucleosomes.
Main Results:
- ELISA offers advantages for sampling multiple time points in apoptosis detection.
- Individual biomarkers may lack sufficient power to predict clinical outcomes.
- Multiplex ELISA technologies provide increased throughput for analyzing biomarker panels.
Conclusions:
- Accurate detection of apoptosis biomarkers is vital for advancing cancer drug development.
- A single biomarker is insufficient; panels of biomarkers are needed for robust assessment.
- Future research should emphasize technologies capable of analyzing multiple biomarkers in small sample volumes.
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