Related Experiment Video
Updated: Apr 17, 2026
Development of a Backbone Cyclic Peptide Library as Potential Antiparasitic Therapeutics Using Microwave Irradiation
Published on: January 26, 2016
Mode of action of anticancer peptides (ACPs) from amphibian origin
Christopher Oelkrug1, Martin Hartke2, Andreas Schubert2
1Fraunhofer Institute for Cell Therapy and Immunology (IZI), Leipzig, Germany christopher.oelkrug@izi.fraunhofer.de.
Abstract:
Although cancer belongs to one of the leading causes of death around the world, fortunately studies have shown that tumor cells have various targets that are susceptible to attack. Interestingly, tumor cells are comprised of cellular membranes, which are altered in chemical composition relative to non-neoplastic cells, giving them an increased net negative charge. These altered membranes are ideal targets for antimicrobial peptides (AMPs) shown to have additional tumoricidal properties and, hence, named anticancer peptides (ACPs). Several hundred ACPs have been explored in vitro and in vivo on various types of cancer. Novel anticancer agents are supposed not to cause serious side effects and the formation of multidrug-resistant tumor cells. During the quest for potent ACPs, promising candidates were isolated from skin secretions of amphibians, such as the granular glands of the Chinese brown frog, Rana chensinensis. ACPs have to be selective to cancer cells and should not induce strong immune responses or be cleared from the body rapidly. Several modifications can improve ACPs either by optimizing the primary structure rationally or randomly or even by introducing other chemical modifications.
Insights
Anticancer peptides (ACPs), derived from natural sources like frog secretions, show promise for targeting cancer cells. These peptides offer a novel therapeutic strategy with potential for reduced side effects and drug resistance.
Area of Science:
- Biochemistry
- Oncology
- Peptide Science
Background:
- Cancer remains a leading global cause of death, necessitating novel therapeutic strategies.
- Tumor cells exhibit distinct cellular membrane properties, including an increased net negative charge, compared to normal cells.
- Antimicrobial peptides (AMPs) possess tumoricidal activity, leading to their classification as anticancer peptides (ACPs).
Purpose of the Study:
- To explore the potential of ACPs as novel anticancer agents.
- To investigate ACPs derived from natural sources, specifically amphibian skin secretions.
- To highlight the importance of ACP selectivity, reduced immunogenicity, and favorable pharmacokinetics for therapeutic application.
Main Methods:
- Review of existing in vitro and in vivo studies on various ACPs.
- Identification of ACP candidates from amphibian skin secretions, exemplified by Rana chensinensis.
- Discussion of strategies for ACP modification to enhance efficacy and therapeutic properties.
Main Results:
- Several hundred ACPs have been investigated for their efficacy against diverse cancer types.
- Amphibian skin secretions, such as those from Rana chensinensis, are a source of potent ACP candidates.
- ACPs demonstrate selective targeting of cancer cells, a crucial characteristic for effective therapy.
Conclusions:
- ACPs represent a promising class of novel anticancer agents with tumoricidal properties.
- The unique membrane characteristics of cancer cells make them susceptible to ACP-mediated attack.
- Further research and modification of ACPs are essential to optimize their therapeutic potential and minimize adverse effects.
Related Concept Videos
02:38Mitogens and the Cell Cycle
01:23Antimicrobial Proteins
Interferons
Interferons (IFNs) are proteins produced by lymphocytes, macrophages, and fibroblasts infected with viruses. While IFNs cannot prevent viruses from entering and...
02:57Targeted Cancer Therapies
There are several types of targeted therapies against...
01:27Transducer Mechanism: Enzyme-Linked Receptors
Major types that are helpful drug targets include: