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Updated: May 23, 2026

Genome-wide Mapping of Drug-DNA Interactions in Cells with COSMIC (Crosslinking of Small Molecules to Isolate Chromatin)
Published on: January 20, 2016
Small molecule drugs - optimizing DNA damaging agent-based therapeutics
John A Hartley1, Daniel Hochhauser
1Cancer Research UK Drug-DNA Interactions Research Group, UCL Cancer Institute, London WC1E 6BT, UK. john.hartley@ucl.ac.uk
Abstract:
DNA-targeted chemotherapies remain fundamental in clinical management of both common solid tumours and hematologic malignancies. Recent studies indicate that novel combinations of cytotoxic chemotherapy may have significant activity even in tumours regarded as being resistant to conventional chemotherapy. In addition, the search for more selective and efficacious drugs that can deliver critical DNA damage with minimal side effects continues. Trabectedin, bendamustine and the pyrrolobenzodiazepine dimer SG2000 exemplify three different classes of DNA targeted agent undergoing clinical evaluation. Increasingly, DNA damaging drugs are being used in combination with novel agents such as small molecule inhibitors or antibodies targeting receptor tyrosine kinases. Understanding the mechanistic basis for interactions of these novel targeted agents with DNA-interactive drugs will inform design of optimal combinations for future studies and is critical to maximize benefit in the clinic.
Insights
Novel DNA-targeted chemotherapy combinations show promise against resistant tumors. Understanding drug interactions is key to developing effective cancer treatments with fewer side effects.
Area of Science:
- Oncology
- Pharmacology
- Molecular Biology
Background:
- DNA-targeted chemotherapies are crucial for treating solid tumors and hematologic malignancies.
- Conventional chemotherapy faces resistance, driving the need for novel agents and combinations.
- Developing selective DNA-damaging drugs with reduced side effects is an ongoing challenge.
Purpose of the Study:
- To review current DNA-targeted agents and their combinations in clinical evaluation.
- To explore the mechanistic basis of interactions between novel targeted agents and DNA-interactive drugs.
- To inform the design of optimal combination therapies for improved clinical outcomes.
Main Methods:
- Review of recent studies on novel DNA-targeted agents and combination therapies.
- Analysis of clinical evaluations of agents like trabectedin, bendamustine, and SG2000.
- Examination of interactions between DNA damaging drugs and novel agents (e.g., kinase inhibitors, antibodies).
Main Results:
- Novel combinations of cytotoxic chemotherapy demonstrate activity in drug-resistant tumors.
- Trabectedin, bendamustine, and SG2000 represent diverse classes of DNA-targeted agents in clinical trials.
- Combination of DNA damaging drugs with novel targeted agents is an emerging strategy.
Conclusions:
- Understanding drug interactions is critical for optimizing combination chemotherapy.
- Novel targeted agents combined with DNA-damaging drugs hold potential for enhanced cancer treatment.
- Further research into these combinations will maximize clinical benefit and patient outcomes.
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