Related Experiment Video
Updated: Sep 11, 2026

Formation of Covalent DNA Adducts by Enzymatically Activated Carcinogens and Drugs In Vitro and Their Determination by 32P-postlabeling
Published on: March 20, 2018
Binary combination effects of some pharmacologically active chemicals as promoters of tumorigenesis
1Science Applications International Corporation, McLean, VA 22102.
Abstract:
Identification of potential interactions in exposures either to simultaneous or sequential combinations of carcinogenic chemicals and chemicals that modify carcinogenesis poses considerable difficulties in human health risk assessments. Studies of experimental carcinogenesis over the past four decades have revealed that many pharmacologically active agents possess tumorigenesis-promoting properties. The effort to identify the possible chemical structural basis of interactions of binary combinations of carcinogenic chemicals and chemical agents that modify carcinogenesis led to the identification of a class of structurally diverse and pharmacologically active tumorigenesis promoters that are known as pharmaceuticals. The chemical class-class interactions of carcinogens and pharmaceutical agents with reported tumorigenesis-promoting properties and the possible biochemical mechanism(s) that underlie such interactions are discussed.
Insights
Assessing combined exposures to carcinogens and cancer-promoting pharmaceuticals is challenging. Research identified pharmaceuticals as a class of compounds that can interact with carcinogens, influencing cancer risk.
Area of Science:
- Toxicology
- Pharmacology
- Carcinogenesis
Background:
- Assessing combined exposures to carcinogens and cancer-modifying agents is complex for human health risk evaluations.
- Numerous pharmacologically active agents have demonstrated tumor-promoting capabilities in experimental carcinogenesis studies over the last 40 years.
Purpose of the Study:
- To investigate the chemical structural basis for interactions between binary combinations of carcinogenic chemicals and carcinogenesis-modifying agents.
- To identify and discuss chemical class-class interactions between carcinogens and pharmaceutical agents with known tumor-promoting properties.
Main Methods:
- Review of experimental carcinogenesis studies.
- Analysis of chemical structures and pharmacological activities of tumorigenesis promoters.
- Discussion of potential biochemical mechanisms underlying interactions.
Main Results:
- Identification of pharmaceuticals as a class of structurally diverse, pharmacologically active tumorigenesis promoters.
- Established that pharmaceuticals can interact with carcinogenic chemicals.
Conclusions:
- Pharmaceuticals represent a significant class of compounds involved in chemical interactions that modify carcinogenesis.
- Understanding these interactions is crucial for accurate human health risk assessment.
More Related Videos
15:04Potentiation of Anticancer Antibody Efficacy by Antineoplastic Drugs: Detection of Antibody-drug Synergism Using the Combination Index Equation
Published on: January 19, 2019
04:12Chemical-Induced Skin Carcinogenesis Model Using Dimethylbenz[a]Anthracene and 12-O-Tetradecanoyl Phorbol-13-Acetate (DMBA-TPA)
Published on: December 19, 2019
Related Concept Videos
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...
Effects of Chemicals: Overview
Mutagenicity and Carcinogenicity
Combined Effects of Drugs: Synergism
Such synergistic combinations...
Pharmacogenetics of Drug Targets: β₂-Adrenergic Receptors, Apo E, Thymidylate Synthase
Drug Toxicity: Dose-Dependent Reactions