Macrocybin, a Natural Mushroom Triglyceride, Reduces Tumor Growth In Vitro and In Vivo through Caveolin-Mediated Interference with the Actin Cytoskeleton.

Autor: Vilariño M; Oncology Area, Center for Biomedical Research of La Rioja (CIBIR), 26006 Logroño, Spain., García-Sanmartín J; Oncology Area, Center for Biomedical Research of La Rioja (CIBIR), 26006 Logroño, Spain., Ochoa-Callejero L; Oncology Area, Center for Biomedical Research of La Rioja (CIBIR), 26006 Logroño, Spain., López-Rodríguez A; CsFlowchem, Campus Universidad San Pablo CEU, Boadilla del Monte, 28668 Madrid, Spain., Blanco-Urgoiti J; CsFlowchem, Campus Universidad San Pablo CEU, Boadilla del Monte, 28668 Madrid, Spain., Martínez A; Oncology Area, Center for Biomedical Research of La Rioja (CIBIR), 26006 Logroño, Spain.
Jazyk: angličtina
Zdroj: Molecules (Basel, Switzerland) [Molecules] 2020 Dec 18; Vol. 25 (24). Date of Electronic Publication: 2020 Dec 18.
DOI: 10.3390/molecules25246010
Abstrakt: Mushrooms have been used for millennia as cancer remedies. Our goal was to screen several mushroom species from the rainforests of Costa Rica, looking for new antitumor molecules. Mushroom extracts were screened using two human cell lines: A549 (lung adenocarcinoma) and NL20 (immortalized normal lung epithelium). Extracts able to kill tumor cells while preserving non-tumor cells were considered "anticancer". The mushroom with better properties was Macrocybe titans . Positive extracts were fractionated further and tested for biological activity on the cell lines. The chemical structure of the active compound was partially elucidated through nuclear magnetic resonance, mass spectrometry, and other ancillary techniques. Chemical analysis showed that the active molecule was a triglyceride containing oleic acid, palmitic acid, and a more complex fatty acid with two double bonds. The synthesis of all possible triglycerides and biological testing identified the natural compound, which was named Macrocybin. A xenograft study showed that Macrocybin significantly reduces A549 tumor growth. In addition, Macrocybin treatment resulted in the upregulation of Caveolin-1 expression and the disassembly of the actin cytoskeleton in tumor cells (but not in normal cells). In conclusion, we have shown that Macrocybin constitutes a new biologically active compound that may be taken into consideration for cancer treatment.
Databáze: MEDLINE
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