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Antitumor Activity of Natural Products

A special issue of International Journal of Molecular Sciences (ISSN 1422-0067). This special issue belongs to the section "Bioactives and Nutraceuticals".

Deadline for manuscript submissions: 25 September 2025 | Viewed by 926

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Department of Pharmacology, Pharmacotherapy and Toxicology, Faculty of Pharmacy, Medical University of Sofia, Sofia, Bulgaria
Interests: leukemia; lymphoma; solid tumors; antineoplastic agents; cell death induction; signal transduction; predictive biomarkers
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Special Issue Information

Dear Colleagues,

Vincristine, irinotecan, etoposide, and paclitaxel are examples of plant-derived compounds that are being employed in cancer treatment, and dactinomycin, bleomycin, and doxorubicin are anticancer agents derived from microbial sources. Cytarabine is an example of an anticancer agent originating from a marine source. Recently, some products of natural origin were reclassified as targeted drugs, e.g., alvocidib (flavopiridol), which acts as a CDK9 inhibitor; staurosporine, which acts as a precursor of the novel protein kinase inhibitor midostaurin, as well as many other examples. It can be expected that natural products with lower toxicity may serve as a source of new antitumor drugs with preferential pharmacological properties against different types of cancer in humans. Additionally, natural products may contribute to a reduction in or the amelioration of the side effects of contemporary antineoplastic therapy. In this Special Issue, we invite authors to present their achievements in this research area of great interest. Studies on the molecular mechanisms of the antineoplastic activity of known and new natural products are welcome to be submitted. High-quality chemical and pharmacological analyses are also welcome, as these may lead to the specific discovery of synergistic interactions between different naturally occurring compounds in plant and animal extracts.

Prof. Dr. Spiro Mihaylov Konstantinov
Guest Editor

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Keywords

  • natural compounds and extracts with antitumor activity
  • studies on molecular mechanisms
  • signal transduction modulation in tumor cells
  • immunomodulating activity
  • mitosis inhibition
  • cell differentiation
  • cell death induction (apoptosis/autophagy)

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Published Papers (1 paper)

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Research

20 pages, 4073 KiB  
Article
Anti-Cancer and Pro-Immune Effects of Lauric Acid on Colorectal Cancer Cells
by Shiori Mori, Rina Fujiwara-Tani, Ruiko Ogata, Hitoshi Ohmori, Kiyomu Fujii, Yi Luo, Takamitsu Sasaki, Yukiko Nishiguchi, Ujjal Kumar Bhawal, Shingo Kishi and Hiroki Kuniyasu
Int. J. Mol. Sci. 2025, 26(5), 1953; https://doi.org/10.3390/ijms26051953 - 24 Feb 2025
Viewed by 750
Abstract
Lauric acid (LAA) is a 12-carbon medium-chain fatty acid that reportedly has antitumor and muscle-protecting effects. However, the details of these antitumor effects remain unclear. Therefore, in this study, we investigated the mechanism underlying the antitumor effects of LAA in CT26 and HT29 [...] Read more.
Lauric acid (LAA) is a 12-carbon medium-chain fatty acid that reportedly has antitumor and muscle-protecting effects. However, the details of these antitumor effects remain unclear. Therefore, in this study, we investigated the mechanism underlying the antitumor effects of LAA in CT26 and HT29 colorectal cancer (CRC) cell lines. Our in vitro findings demonstrated that LAA suppressed CRC cell proliferation, induced mitochondrial oxidative stress (reactive oxygen species (ROS)), inhibited oxidative phosphorylation (OXPHOS), and induced apoptosis. Moreover, in vivo analysis of LAA showed a more pronounced antitumor effect in CT26 cells in a syngeneic mouse tumor model than in vitro; therefore, we further investigated its impact on host antitumor immunity. We observed that LAA increased the number of effector T cells in mouse tumors, while in vitro LAA activated mouse splenocytes (SplC) and promoted OXPHOS. In two-dimensional co-culture of SplC and CT26 cells, LAA induced cell death in cancer cells. In three-dimensional co-culture, LAA promoted SplC infiltration and suppressed the formation of tumor spheres. Thus, LAA may exert antitumor effects through increased ROS production in cancer cells and effector T cell activation via increased energy metabolism. These results suggest that LAA, when used in combination with existing anti-cancer drugs, is likely to exhibit sensitizing effects in terms of both antitumor and antitumor immune effects, and future clinical studies are anticipated. Full article
(This article belongs to the Special Issue Antitumor Activity of Natural Products)
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