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Formation of Covalent DNA Adducts by Enzymatically Activated Carcinogens and Drugs In Vitro and Their Determination by 32P-postlabeling
Published on: March 20, 2018
Natural peroxy anticancer agents
Valery M Dembitsky1, Tatyana A Gloriozova, Vladimir V Poroikov
1Department of Medicinal, Chemistry and Natural Products, School of Pharmacy, Hebrew University, Jerusalem, Israel. dvalery@cc.huji.ac.il
Abstract:
Present review describes research on novel natural anticancer agents isolated from terrestrial and marine sources. More than 120 cytotoxic anticancer compounds have shown confirmed activity in vitro tumor cell lines bioassay and are of current interest to Natural Cancer Institute for further in vivo evaluation. Intensive searches for new classes of pharmacologically potent agents produced by terrestrial and marine organisms have resulted in the discovery of dozens of compounds possessing high cytotoxic activities. However, only a limited number of them have been tested in pre-clinical and clinical trials. One of the reasons is a limited supply of the active ingredients from the natural sources. However, the pre-clinical and clinical development of many terrestrial and/or marine-derived natural products into pharmaceuticals is often hampered by a limited supply from the natural source. Total synthesis is of vital importance in these situations, allowing for the production of useful quantities of the target compound for further biological evaluation. With computer program PASS some additional biological activities are also predicted, which point toward new possible applications of these compounds. This review emphasizes the role of terrestrial and marine peroxides as an important source of leads for drug discovery.
Insights
Natural products from land and sea offer promising anticancer agents, with over 120 showing in vitro activity. Limited supply necessitates total synthesis for further drug development.
Area of Science:
- Natural product chemistry
- Pharmacology
- Drug discovery
Background:
- Terrestrial and marine organisms are rich sources of novel anticancer compounds.
- Over 120 cytotoxic agents have demonstrated in vitro activity against tumor cell lines.
- Many natural products show potential but face development hurdles due to limited supply.
Purpose of the Study:
- To review novel natural anticancer agents from terrestrial and marine sources.
- To highlight the importance of total synthesis for overcoming supply limitations.
- To explore potential new applications predicted by computational analysis.
Main Methods:
- Literature review of natural product research.
- Analysis of in vitro bioassay data for cytotoxic activity.
- Discussion of total synthesis strategies for natural products.
- Mention of computational prediction of biological activities using PASS.
Main Results:
- Identification of over 120 cytotoxic compounds from natural sources.
- Discovery of numerous potent cytotoxic agents from terrestrial and marine organisms.
- Emphasis on terrestrial and marine peroxides as key sources for drug leads.
Conclusions:
- Natural products, particularly peroxides, are vital for discovering new anticancer drugs.
- Total synthesis is crucial for advancing natural product-derived drug candidates.
- Further research is needed to overcome supply challenges and advance natural products into clinical use.
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