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Updated: Aug 21, 2026

DNA Microarrays: Sample Quality Control, Array Hybridization and Scanning
Published on: March 15, 2011
Gene expression microarray technologies in the development of new therapeutic agents
Paul A Clarke1, Robert te Poele, Paul Workman
1Cancer Research UK Centre for Cancer Therapeutics, The Institute of Cancer Research, Haddow Laboratories, Sutton, Surrey SM2 5NG, UK.
Abstract:
We review in detail how gene expression microarray technology is benefiting all phases of the discovery, development and subsequent use of new cancer therapeutics. Global gene expression profiling is valuable in cancer classification, elucidation of biochemical pathways and the identification of potential targets for novel molecular therapeutics. We exemplify the value in tissue culture and animal models of cancer, as well as in clinical studies. The power of expression profiling alongside gene knockout or knockdown methods such as RNA interference is illustrated. The use of basal or constitutive gene expression profiling to understand and predict drug sensitivity or resistance is described. The ability of expression profiling to define detailed molecular signatures of drug action is emphasised. The approach can identify on-target and off-target effects. It can be used to identify molecular biomarkers for proof of concept studies, pharmacodynamic endpoints and prognostic markers for predicting outcome and patient selection.
Insights
Gene expression microarray technology aids cancer therapeutic discovery and development. This gene profiling helps classify cancer, identify targets, and predict drug responses, improving patient selection and treatment outcomes.
Area of Science:
- Oncology
- Genomics
- Pharmacology
Background:
- Gene expression microarray technology offers a global view of cellular activity.
- Understanding gene expression is crucial for advancing cancer therapeutics.
Purpose of the Study:
- To review the multifaceted benefits of gene expression microarray technology in cancer drug discovery and development.
- To highlight its applications across various stages, from target identification to clinical use.
Main Methods:
- Global gene expression profiling using microarrays.
- Integration with gene knockout/knockdown techniques like RNA interference.
- Analysis of basal/constitutive gene expression patterns.
Main Results:
- Gene expression profiling aids in cancer classification and pathway elucidation.
- It identifies potential therapeutic targets and predicts drug sensitivity/resistance.
- Molecular signatures of drug action, including on-target and off-target effects, can be defined.
Conclusions:
- Gene expression profiling is invaluable for cancer therapeutic discovery, development, and clinical application.
- It facilitates biomarker identification for proof-of-concept, pharmacodynamics, and patient stratification.
- This technology enhances the precision and efficacy of cancer treatments.
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