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Anticancer Potential of the Cyclolinopeptides

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CANCERS
卷 15, 期 15, 页码 -

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MDPI
DOI: 10.3390/cancers15153874

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flaxseed; cyclolinopeptides; cancer; potential therapeutics

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Peptides are abundant molecules with diverse functions and biological activities. Flaxseed oil, a natural substance, has been extensively studied for its biological effects. Cyclolinopeptides (CLPs), one of the components of flaxseed, have gained attention due to their cyclic nature and potential therapeutic applications. CLPs have shown anticancer effects and can inhibit cancer cell growth in various cancer types.
Simple Summary Peptides are ubiquitous molecules abundantly found in nature, and their diverse functions and biological activities have been extensively examined over the years. In the past, in vitro and in vivo biological effects of flaxseed oil have been well-examined and reported in numerous studies. However, the effects of many individual components from the flaxseed are yet to be examined. Cyclolinopeptides (CLPs), one of the components, have gained significant attention due to their cyclic nature and hydrophobic properties. CLPs are isolated from flaxseed and typically consist of eight, nine, or ten amino acid residues. Experimental investigations into the biological activities of CLPs began in the 1980s and early 1990s, revealing their potential therapeutic applications. In recent years, particularly, there has been interest in examining the anticancer effect of CLPs. Diverse bioactivities and potential therapeutic CLPs aspects seek novel approaches and further investigation to maximize utility. Novel therapeutic agents to combat cancer is an active area of research, as current treatment options have limitations in efficacy and tolerability. One of these therapeutic agents in our immediate environment is cyclolinopeptides (CLPs). CLPs have several advantages that make them suitable for daily consumption and potential therapeutics in cancer research. They are natural compounds, having high specificity, low toxicity, low cost, and an overall simple extraction process. Over the years, numerous in vitro studies in cancer cells demonstrated CLPs to possess anti-proliferative, apoptotic, and anti-angiogenic effects, as well as the ability to induce cell cycle arrest and inhibit cancer cell growth in various cancer types, including breast cancer, gastric cancer, and melanoma. This paper provides an overview of the significance and potential of CLPs as therapeutic agents, emphasizing their promising role in cancer treatment based on different cancer cell lines. The mechanism of action of CLPs in cancer cells is multifaceted. It involves the modulation of multiple signaling pathways, including inhibition of protein kinases, modulation of apoptosis-related proteins, and regulation of oxidative stress and inflammation.

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