Metal Ion Reduction, Chelation, and Cytotoxicity of Selected Bicyclic Monoterpenes and Their Binary Mixtures

<b>Background/Objectives</b>: Bicyclic monoterpenes are one of the most common groups of secondary plant metabolites found in Nature. Their wide spectrum of biological activity can be used in the prevention and in the treatment of various diseases, including so-called ‘diseases of civili...

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Main Authors: Karolina Wojtunik-Kulesza, Marcela Dubiel, Katarzyna Klimek
Format: Article
Language:English
Published: MDPI AG 2025-03-01
Series:Metabolites
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Online Access:https://www.mdpi.com/2218-1989/15/3/199
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author Karolina Wojtunik-Kulesza
Marcela Dubiel
Katarzyna Klimek
author_facet Karolina Wojtunik-Kulesza
Marcela Dubiel
Katarzyna Klimek
author_sort Karolina Wojtunik-Kulesza
collection DOAJ
description <b>Background/Objectives</b>: Bicyclic monoterpenes are one of the most common groups of secondary plant metabolites found in Nature. Their wide spectrum of biological activity can be used in the prevention and in the treatment of various diseases, including so-called ‘diseases of civilization’. Their potential for synergistic interactions may influence the biological activities of more complex mixtures. <b>Methods</b>: This study investigated the ability of selected bicyclic monoterpenes and their binary mixtures to reduce Fe(III) and Cu(II) and chelate Fe(II) and assessed their cytotoxic activity against BJ and HepG2 cell lines. <b>Results</b>: The obtained results did not reveal synergistic interactions towards the biological activities, but binary mixtures proved to be safe in relation to the tested cell lines. Among the tested single monoterpenes, the most effective were 3-carene and <i>β</i>-pinene, with the latter exhibiting the greatest ability to decrease cell viability (CC<sub>50</sub> for BJ and HepG2 cells was about 1.08 and 1.85 mM, respectively). <b>Conclusions</b>: The results revealed that both single compounds and binary mixtures demonstrate the ability to reduce selected metal ions and chelate Fe(II) ions. Synergistic interactions were not observed, but an increase in the activity of selected binary mixtures was recorded. Based on cell culture experiments, the monoterpenes and their binary mixtures can be considered safe at a concentration lower than 1 mM and close to 0.313 mM, respectively.
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spelling doaj-art-2f74a607ba6b4cd289dcb472fe3081622025-08-20T02:42:22ZengMDPI AGMetabolites2218-19892025-03-0115319910.3390/metabo15030199Metal Ion Reduction, Chelation, and Cytotoxicity of Selected Bicyclic Monoterpenes and Their Binary MixturesKarolina Wojtunik-Kulesza0Marcela Dubiel1Katarzyna Klimek2Department of Inorganic Chemistry, Medical University of Lublin, Chodzki Street 4a, 20-093 Lublin, PolandDepartment of Inorganic Chemistry, Medical University of Lublin, Chodzki Street 4a, 20-093 Lublin, PolandChair and Department of Biochemistry and Biotechnology, Medical University of Lublin, 1 Chodzki Street 1, 20-093 Lublin, Poland<b>Background/Objectives</b>: Bicyclic monoterpenes are one of the most common groups of secondary plant metabolites found in Nature. Their wide spectrum of biological activity can be used in the prevention and in the treatment of various diseases, including so-called ‘diseases of civilization’. Their potential for synergistic interactions may influence the biological activities of more complex mixtures. <b>Methods</b>: This study investigated the ability of selected bicyclic monoterpenes and their binary mixtures to reduce Fe(III) and Cu(II) and chelate Fe(II) and assessed their cytotoxic activity against BJ and HepG2 cell lines. <b>Results</b>: The obtained results did not reveal synergistic interactions towards the biological activities, but binary mixtures proved to be safe in relation to the tested cell lines. Among the tested single monoterpenes, the most effective were 3-carene and <i>β</i>-pinene, with the latter exhibiting the greatest ability to decrease cell viability (CC<sub>50</sub> for BJ and HepG2 cells was about 1.08 and 1.85 mM, respectively). <b>Conclusions</b>: The results revealed that both single compounds and binary mixtures demonstrate the ability to reduce selected metal ions and chelate Fe(II) ions. Synergistic interactions were not observed, but an increase in the activity of selected binary mixtures was recorded. Based on cell culture experiments, the monoterpenes and their binary mixtures can be considered safe at a concentration lower than 1 mM and close to 0.313 mM, respectively.https://www.mdpi.com/2218-1989/15/3/199bicyclic monoterpenescytotoxicityhepatocytesfibroblastsmetal ion reductionchelation
spellingShingle Karolina Wojtunik-Kulesza
Marcela Dubiel
Katarzyna Klimek
Metal Ion Reduction, Chelation, and Cytotoxicity of Selected Bicyclic Monoterpenes and Their Binary Mixtures
Metabolites
bicyclic monoterpenes
cytotoxicity
hepatocytes
fibroblasts
metal ion reduction
chelation
title Metal Ion Reduction, Chelation, and Cytotoxicity of Selected Bicyclic Monoterpenes and Their Binary Mixtures
title_full Metal Ion Reduction, Chelation, and Cytotoxicity of Selected Bicyclic Monoterpenes and Their Binary Mixtures
title_fullStr Metal Ion Reduction, Chelation, and Cytotoxicity of Selected Bicyclic Monoterpenes and Their Binary Mixtures
title_full_unstemmed Metal Ion Reduction, Chelation, and Cytotoxicity of Selected Bicyclic Monoterpenes and Their Binary Mixtures
title_short Metal Ion Reduction, Chelation, and Cytotoxicity of Selected Bicyclic Monoterpenes and Their Binary Mixtures
title_sort metal ion reduction chelation and cytotoxicity of selected bicyclic monoterpenes and their binary mixtures
topic bicyclic monoterpenes
cytotoxicity
hepatocytes
fibroblasts
metal ion reduction
chelation
url https://www.mdpi.com/2218-1989/15/3/199
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AT marceladubiel metalionreductionchelationandcytotoxicityofselectedbicyclicmonoterpenesandtheirbinarymixtures
AT katarzynaklimek metalionreductionchelationandcytotoxicityofselectedbicyclicmonoterpenesandtheirbinarymixtures