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Vimalkumar PS, Sivadas N, Murali VP, Sherin DR, Murali M, Joseph AG, Radhakrishnan KV, Maiti KK. Exploring apoptotic induction of malabaricone A in triple-negative breast cancer cells: an acylphenol phyto-entity isolated from the fruit rind of Myristica malabarica Lam. RSC Med Chem 2024:d4md00391h. [PMID: 39263684 PMCID: PMC11382570 DOI: 10.1039/d4md00391h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2024] [Accepted: 08/20/2024] [Indexed: 09/13/2024] Open
Abstract
Myristica malabarica Lam., commonly known as Malabar nutmeg or false nutmeg, is used in traditional medicine and as a spice. Our exploration focuses on malabaricones, a distinct group of secondary metabolites isolated from the fruit rind of M. malabarica. We investigated the selective cytotoxicity of malabaricones against the triple-negative breast cancer (TNBC) cell line. In particular, malabaricone A (Mal-A) displays heightened toxicity towards TNBC cells (MDA-MB-231), with an IC50 of 8.81 ± 0.03 μM. In vitro fluorimetric assays confirmed the apoptotic capability of Mal-A and its capacity to induce nuclear fragmentation. Additionally, ultrasensitive surface-enhanced Raman spectroscopy confirms DNA fragmentation during cellular apoptosis. Cell cycle analysis indicates arrest during the sub-G0 phase by downregulating key regulatory proteins involved in cell cycle progression. Increased expression levels of caspase 3, 9, and 8 suggest involvement of both extrinsic and intrinsic apoptotic pathways. Finally, assessment of protein expression patterns within apoptotic pathways reveals upregulation of key apoptotic proteins like Fas/FasL, TNF/TNFR1, and p53, coupled with downregulation of several inhibitors of apoptosis proteins such as XIAP, cIAP-2, and Livin. These findings are further verified with in silico molecular docking. Mal-A reveals a strong affinity towards apoptotic proteins, including TNF, Fas, HTRA, Smac, and XIAP, with docking scores ranging from -5.1 to -7.2 kcal mol-1. Subsequently, molecular dynamics simulation confirms the binding stability. This conclusive in vitro evaluation validates Mal-A as a potent phyto-entity against TNBC. To the best of our knowledge, this study represents the first comprehensive anticancer evaluation of Mal-A in TNBC cells.
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Affiliation(s)
- Pothiyil S Vimalkumar
- Chemical Sciences and Technology Division, CSIR-National Institute for Interdisciplinary Science and Technology (CSIR-NIIST) Thiruvananthapuram-695019 India
- Academy of Scientific and Innovative Research (AcSIR) Ghaziabad-201002 India
| | - Neethu Sivadas
- Chemical Sciences and Technology Division, CSIR-National Institute for Interdisciplinary Science and Technology (CSIR-NIIST) Thiruvananthapuram-695019 India
- Academy of Scientific and Innovative Research (AcSIR) Ghaziabad-201002 India
| | - Vishnu Priya Murali
- Chemical Sciences and Technology Division, CSIR-National Institute for Interdisciplinary Science and Technology (CSIR-NIIST) Thiruvananthapuram-695019 India
| | - Daisy R Sherin
- School of Digital Sciences, Kerala University of Digital Sciences, Innovation and Technology, Digital University Kerala Thiruvananthapuram-695317 India
| | - Madhukrishnan Murali
- Chemical Sciences and Technology Division, CSIR-National Institute for Interdisciplinary Science and Technology (CSIR-NIIST) Thiruvananthapuram-695019 India
- Academy of Scientific and Innovative Research (AcSIR) Ghaziabad-201002 India
| | - Anuja Gracy Joseph
- Chemical Sciences and Technology Division, CSIR-National Institute for Interdisciplinary Science and Technology (CSIR-NIIST) Thiruvananthapuram-695019 India
- Academy of Scientific and Innovative Research (AcSIR) Ghaziabad-201002 India
| | - Kokkuvayil Vasu Radhakrishnan
- Chemical Sciences and Technology Division, CSIR-National Institute for Interdisciplinary Science and Technology (CSIR-NIIST) Thiruvananthapuram-695019 India
- Academy of Scientific and Innovative Research (AcSIR) Ghaziabad-201002 India
| | - Kaustabh Kumar Maiti
- Chemical Sciences and Technology Division, CSIR-National Institute for Interdisciplinary Science and Technology (CSIR-NIIST) Thiruvananthapuram-695019 India
- Academy of Scientific and Innovative Research (AcSIR) Ghaziabad-201002 India
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Zicarelli G, Multisanti CR, Falco F, Faggio C. Evaluation of toxicity of Personal Care Products (PCPs) in freshwaters: Zebrafish as a model. ENVIRONMENTAL TOXICOLOGY AND PHARMACOLOGY 2022; 94:103923. [PMID: 35772612 DOI: 10.1016/j.etap.2022.103923] [Citation(s) in RCA: 27] [Impact Index Per Article: 13.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/16/2022] [Revised: 06/19/2022] [Accepted: 06/25/2022] [Indexed: 06/15/2023]
Abstract
Personal care products (PCPs) are part of the large and growing family of emerging contaminants (ECs). Many daily products such as sunscreens, toothpaste, make-up products, perfume, and others, fall under this definition, and their use is increasing exponentially. Furthermore, the degradation of some components of these products is limited. Indeed, they are able to easily reach and accumulate in aquatic systems, representing a new class of contaminants. Moreover, due to their chemical properties, they can interfere at different biological levels, and for this reason, they need to be thoroughly investigated. We have reviewed the literature on PCPs, with a special focus on the adverse effects on the freshwater zebrafish (Danio rerio). The aim of this work is to provide a careful assessment of the toxicity of these compounds, in order to raise awareness for more conscious and responsible use.
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Affiliation(s)
- Giorgia Zicarelli
- Department of Chemical, Biological, Pharmaceutical and Environmental Sciences, University of Messina, Viale Ferdinando Stagno d'Alcontres, 31, 98166S Agata-Messina, Italy.
| | - Cristiana Roberta Multisanti
- Department of Chemical, Biological, Pharmaceutical and Environmental Sciences, University of Messina, Viale Ferdinando Stagno d'Alcontres, 31, 98166S Agata-Messina, Italy.
| | - Francesca Falco
- Institute of Marine Biological Resources and Biotechnologies, National Research Council (CNR), Mazara del Vallo, Italy.
| | - Caterina Faggio
- Department of Chemical, Biological, Pharmaceutical and Environmental Sciences, University of Messina, Viale Ferdinando Stagno d'Alcontres, 31, 98166S Agata-Messina, Italy.
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De Marchi J, Cé R, Bruschi L, Santos M, Paese K, Lavayen V, Klamt F, Pohlmann A, Guterres S. Triclosan and ⍺-bisabolol–loaded nanocapsule functionalized with ascorbic acid as a dry powder formulation against A549 lung cancer cells. J Drug Deliv Sci Technol 2022. [DOI: 10.1016/j.jddst.2022.103463] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Health Benefits, Pharmacological Effects, Molecular Mechanisms, and Therapeutic Potential of α-Bisabolol. Nutrients 2022; 14:nu14071370. [PMID: 35405982 PMCID: PMC9002489 DOI: 10.3390/nu14071370] [Citation(s) in RCA: 25] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2022] [Revised: 03/14/2022] [Accepted: 03/15/2022] [Indexed: 12/04/2022] Open
Abstract
α-Bisabolol is one of the important monocyclic sesquiterpenes, derived naturally from essential oils of many edible and ornamental plants. It was first obtained from Matricaria chamomilla, commonly known as chamomile or German chamomile. The available literature indicates that this plant along with other α-Bisabolol containing plants is popularly used in traditional medicine for potential health benefits and general wellbeing. Nutritional studies are indicative of the health benefits of α-Bisabolol. Numerous experimental studies demonstrated pharmacological properties of α-Bisabolol including anticancer, antinociceptive, neuroprotective, cardioprotective, and antimicrobial. This review aims to collectively present different pharmacological activities based on both in vitro and in vivo studies. In the present review using synoptic tables and figures, we comprehensively present that α-Bisabolol possesses therapeutic and protective activities, therefore, it can be used for potential health benefits based on pharmacological effects, underlying molecular mechanism, and favorable pharmaceutical properties. Based on the studies mostly performed on cell lines or animal models, it is evident that α-Bisabolol may be a promising nutraceutical and phytomedicine to target aberrant biological mechanisms which result in altered physiological processes and various ailments. Given the polypharmacological effects and pleiotropic properties, along with favorable pharmacokinetics, and dietary availability and safety, α-Bisabolol can be used as a dietary agent, nutraceutical or phytopharmaceutical agent or as an adjuvant with currently available modern medicines. The regulatory approval of this molecule for use as food additives, and in cosmetics and fragrance industry is also supportive of its human usage. Moreover, further studies are necessary to address pharmaceutical, pharmacological, and toxicological aspects before clinical or nutritional usage in humans. The biological actions and health benefits open opportunities for pharmaceutical development with pharmacological basis of its use in future therapeutics.
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Egbuta MA, McIntosh S, Waters DLE, Vancov T, Liu L. In Vitro Anti-Inflammatory Activity of Essential Oil and β-Bisabolol Derived from Cotton Gin Trash. Molecules 2022; 27:molecules27020526. [PMID: 35056836 PMCID: PMC8779114 DOI: 10.3390/molecules27020526] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2021] [Revised: 01/07/2022] [Accepted: 01/10/2022] [Indexed: 02/05/2023] Open
Abstract
Natural α-bisabolol has been widely used in cosmetics and is sourced mainly from the stems of Candeia trees that have become endangered due to over exploitation. The in vitro anti-inflammatory activity of cotton gin trash (CGT) essential oil and the major terpenoid (β-bisabolol) purified from the oil were investigated against lipopolysaccharide (LPS)-stimulated RAW264.7 macrophages as well as the 3t3 and HS27 fibroblast cell lines. Nitric oxide (NO), prostaglandin E2 (PGE2), tumor necrosis factor-alpha (TNF-α), interleukin 6 (IL-6), and interleukin 8 (IL-8) were measured using Greiss reagent, enzyme-linked immunosorbent assay (ELISA), and cytokine bead array (CBA)-flow cytometry. Non-toxic concentrations of CGT oil and β-bisabolol (1.6–50.0 µg/mL) significantly inhibited the production of the inflammatory mediators in a dose-dependent manner. Maximal inhibition by β-bisabolol was 55.5% for NO, 62.3% for PGE2, and 45.3% for TNF-α production in RAW cells. β-Bisabolol induced a level of inhibition similar to an equal concentration of α-bisabolol (50.0 µg/mL), a known anti-inflammatory agent. These results suggest β-bisabolol exerts similar in vitro effects to known topical anti-inflammatory agents and could therefore be exploited for cosmetic and therapeutic uses. This is the first study to report the in vitro anti-inflammatory activity of β-bisabolol in CGT essential oil.
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Affiliation(s)
- Mary A. Egbuta
- Southern Cross Plant Science, Faculty of Science and Engineering, Southern Cross University, Lismore, NSW 2480, Australia; (M.A.E.); (S.M.); (D.L.E.W.)
| | - Shane McIntosh
- Southern Cross Plant Science, Faculty of Science and Engineering, Southern Cross University, Lismore, NSW 2480, Australia; (M.A.E.); (S.M.); (D.L.E.W.)
| | - Daniel L. E. Waters
- Southern Cross Plant Science, Faculty of Science and Engineering, Southern Cross University, Lismore, NSW 2480, Australia; (M.A.E.); (S.M.); (D.L.E.W.)
| | - Tony Vancov
- Elizabeth Macarthur Agricultural Institute, NSW Department of Planning, Industry & Environment, DPI Agriculture, Woodbridge Rd, Menangle, NSW 2568, Australia;
| | - Lei Liu
- Southern Cross Plant Science, Faculty of Science and Engineering, Southern Cross University, Lismore, NSW 2480, Australia; (M.A.E.); (S.M.); (D.L.E.W.)
- Correspondence: ; Tel.: +61-02-6620-3293
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Hanuš LO, Hod Y. Terpenes/Terpenoids in Cannabis: Are They Important? Med Cannabis Cannabinoids 2020; 3:25-60. [PMID: 34676339 PMCID: PMC8489319 DOI: 10.1159/000509733] [Citation(s) in RCA: 44] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2020] [Accepted: 06/26/2020] [Indexed: 11/19/2022] Open
Abstract
Cannabis sativa plant has not only cannabinoids as crucial compounds but also the other compounds that play important role as synergistic and/or entourage compound. Cannabis/hemp plant materials and essential oils were analyzed with the help of gas chromatography/mass spectrometry detector for the content of terpenes and terpenoids. The main terpenes/terpenoids and their abundance in the samples were evaluated. Results of this study will be helpful in the next evaluation of these compound in mixture with cannabinoids and their importance in medical treatment.
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Affiliation(s)
- Lumír Ondřej Hanuš
- Lumir Lab, Asana Bio Group Ltd., The Hadassah Medical Center, Hebrew University Biotechnology Park, Ein Kerem, Jerusalem, Israel
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BID and the α-bisabolol-triggered cell death program: converging on mitochondria and lysosomes. Cell Death Dis 2019; 10:889. [PMID: 31767857 PMCID: PMC6877650 DOI: 10.1038/s41419-019-2126-8] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2019] [Revised: 10/08/2019] [Accepted: 11/07/2019] [Indexed: 01/09/2023]
Abstract
α-Bisabolol (BSB) is a plant-derived sesquiterpene alcohol able to trigger regulated cell death in transformed cells, while deprived of the general toxicity in several mouse models. Here, we investigated the involvement of lysosomal and mitochondrial compartments in the cytotoxic effects of BSB, with a specific focus on the BH3-only activator protein BID. We found that BSB particularly accumulated in cancer cell lines, displaying a higher amount of lipid rafts as compared to normal blood cells. By means of western blotting and microscopy techniques, we documented rapid BSB-induced BID translocation to lysosomes and mitochondria, both of them becoming dysfunctional. Lysosomal membranes were permeabilized, thus blocking the cytoprotective autophagic flux and provoking cathepsin B leakage into the cytosol. Multiple flow cytometry-based experiments demonstrated the loss of mitochondrial membrane potential due to pore formation across the lipid bilayer. These parallel events converged on neoplastic cell death, an outcome significantly prevented by BID knockdown. Therefore, BSB promoted BID redistribution to the cell death executioner organelles, which in turn activated anti-autophagic and proapoptotic mechanisms. This is an example of how xenohormesis can be exploited to modulate basic cellular programs in cancer.
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8
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Baron EP. Medicinal Properties of Cannabinoids, Terpenes, and Flavonoids in Cannabis, and Benefits in Migraine, Headache, and Pain: An Update on Current Evidence and Cannabis Science. Headache 2019; 58:1139-1186. [PMID: 30152161 DOI: 10.1111/head.13345] [Citation(s) in RCA: 127] [Impact Index Per Article: 25.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2018] [Accepted: 05/09/2018] [Indexed: 12/19/2022]
Abstract
BACKGROUND Comprehensive literature reviews of historical perspectives and evidence supporting cannabis/cannabinoids in the treatment of pain, including migraine and headache, with associated neurobiological mechanisms of pain modulation have been well described. Most of the existing literature reports on the cannabinoids Δ9 -tetrahydrocannabinol (THC) and cannabidiol (CBD), or cannabis in general. There are many cannabis strains that vary widely in the composition of cannabinoids, terpenes, flavonoids, and other compounds. These components work synergistically to produce wide variations in benefits, side effects, and strain characteristics. Knowledge of the individual medicinal properties of the cannabinoids, terpenes, and flavonoids is necessary to cross-breed strains to obtain optimal standardized synergistic compositions. This will enable targeting individual symptoms and/or diseases, including migraine, headache, and pain. OBJECTIVE Review the medical literature for the use of cannabis/cannabinoids in the treatment of migraine, headache, facial pain, and other chronic pain syndromes, and for supporting evidence of a potential role in combatting the opioid epidemic. Review the medical literature involving major and minor cannabinoids, primary and secondary terpenes, and flavonoids that underlie the synergistic entourage effects of cannabis. Summarize the individual medicinal benefits of these substances, including analgesic and anti-inflammatory properties. CONCLUSION There is accumulating evidence for various therapeutic benefits of cannabis/cannabinoids, especially in the treatment of pain, which may also apply to the treatment of migraine and headache. There is also supporting evidence that cannabis may assist in opioid detoxification and weaning, thus making it a potential weapon in battling the opioid epidemic. Cannabis science is a rapidly evolving medical sector and industry with increasingly regulated production standards. Further research is anticipated to optimize breeding of strain-specific synergistic ratios of cannabinoids, terpenes, and other phytochemicals for predictable user effects, characteristics, and improved symptom and disease-targeted therapies.
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Affiliation(s)
- Eric P Baron
- Department of Neurology, Center for Neurological Restoration - Headache and Chronic Pain Medicine, Cleveland Clinic Neurological Institute, Cleveland, OH, 44195, USA
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Antiparasitic effect of (-)-α-bisabolol against Trypanosoma cruzi Y strain forms. Diagn Microbiol Infect Dis 2019; 95:114860. [PMID: 31353066 DOI: 10.1016/j.diagmicrobio.2019.06.012] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2018] [Revised: 05/20/2019] [Accepted: 06/18/2019] [Indexed: 12/22/2022]
Abstract
Chagas disease is caused by Trypanosoma cruzi and affects about 7 million people worldwide. Benznidazole and nifurtimox have low efficacy and high toxicity. The present study was designed to identify the trypanocidal effect of (-)-α-Bisabolol (BIS) and investigate its mechanism. Epimastigotes and trypomastigotes were cultured with BIS and the viable cells were counted. BIS antiamastigote effect was evaluated using infected LLC-MK2 cells. MTT assay was performed to evaluate BIS cytotoxicity. Growth recovery was assessed to evaluate BIS effect after short times of exposure. BIS mechanism was investigated through flow cytometry, with 7-AAD and Annexin V-PE. DCFH-DA, rhodamine 123 (Rho123) and acridine orange (AO). Finally, enzymatic and computational assays were performed to identify BIS interaction with T. cruzi GAPDH (tcGAPDH). BIS showed an inhibitory effect on epimastigotes after all tested periods, as well on trypomastigotes. It caused cytotoxicity on LLC-MK2 cells at higher concentrations, with selectivity index (SeI) = 26.5. After treatment, infected cells showed a decrease in infected cells, the number of amastigotes per infected cell and the survival index (SuI). Growth recovery demonstrated that BIS effect causes rapid death of T. cruzi. Flow cytometry showed that BIS biological effect is associated with apoptosis induction, increase in cytoplasmic ROS and mitochondrial transmembrane potential, while reservosome swelling was observed at a late stage. Also, BIS action mechanism may be associated to tcGAPDH inhibition. Altogether, the results demonstrate that BIS causes cell death in Trypanosoma cruzi Y strain forms, with the involvement of apoptosis and oxidative stress and enzymatic inhibition.
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Jin M, Xiao Z, Zhang S, Men X, Li X, Zhang B, Zhou T, Hsiao CD, Liu K. Possible involvement of Fas/FasL-dependent apoptotic pathway in α-bisabolol induced cardiotoxicity in zebrafish embryos. CHEMOSPHERE 2019; 219:557-566. [PMID: 30553216 DOI: 10.1016/j.chemosphere.2018.12.060] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/03/2018] [Revised: 12/05/2018] [Accepted: 12/07/2018] [Indexed: 06/09/2023]
Abstract
α-Bisabolol, an unsaturated monocyclic sesquiterpene alcohol, is a common ingredient in many pharmaceuticals and personal care products (PPCPs). Despite being widely used, little is known about its toxic effects on organisms and aquatic environment. In this study, we investigated the developmental toxicity of α-Bisabolol, especially its effects on the cardiac development using zebrafish embryos as a model. Embryos at 4 h post-fertilization (hpf) were exposed to 10, 30, 50, 70, 90, and 100 μM α-Bisabolol until 144 hpf. α-Bisabolol caused phenotypic defects and the most striking one is the heart malformation. Treatment of α-Bisabolol significantly increased the cardiac malformation rate, the SV-BA distance, as well as the pericardial edema area, and reduced heart rate in a concentration-dependent manner. Notably, considerable numbers of apoptotic cells were mainly observed in the heart region of zebrafish treated with α-Bisabolol. Further study on α-Bisabolol induced apoptosis in the zebrafsh heart suggested that an activation of Fas/FasL-dependent apoptotic pathway. Taken together, our study investigated the cardiotoxicity of α-Bisabolol on zebrafish embryonic development and its underlying molecular mechanism, shedding light on the full understanding of α-Bisabolol toxicity on living organisms and its environmental impact.
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Affiliation(s)
- Meng Jin
- Biology Institute, Qilu University of Technology (Shandong Academy of Sciences), 28789 East Jingshi Road, Jinan, 250103, Shandong Province, PR China; Key Laboratory for Drug Screening Technology of Shandong Academy of Sciences, 28789 East Jingshi Road, Jinan, 250103, Shandong Province, PR China.
| | - Zhixin Xiao
- Biology Institute, Qilu University of Technology (Shandong Academy of Sciences), 28789 East Jingshi Road, Jinan, 250103, Shandong Province, PR China; Key Laboratory for Drug Screening Technology of Shandong Academy of Sciences, 28789 East Jingshi Road, Jinan, 250103, Shandong Province, PR China
| | - Shanshan Zhang
- Biology Institute, Qilu University of Technology (Shandong Academy of Sciences), 28789 East Jingshi Road, Jinan, 250103, Shandong Province, PR China; Key Laboratory for Drug Screening Technology of Shandong Academy of Sciences, 28789 East Jingshi Road, Jinan, 250103, Shandong Province, PR China
| | - Xiao Men
- CAS Key Laboratory of Biobased Materials, Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences, 189 Songling Road, Laoshan District, Qingdao, 266101, Shandong Province, PR China
| | - Xia Li
- Yinfeng Cryomedicine Technology Co., Ltd, 1109 Gang Xin San Road, Jinan, 250103, Shandong Province, PR China
| | - Baoyue Zhang
- Biology Institute, Qilu University of Technology (Shandong Academy of Sciences), 28789 East Jingshi Road, Jinan, 250103, Shandong Province, PR China; Key Laboratory for Drug Screening Technology of Shandong Academy of Sciences, 28789 East Jingshi Road, Jinan, 250103, Shandong Province, PR China
| | - Tianxia Zhou
- Biology Institute, Qilu University of Technology (Shandong Academy of Sciences), 28789 East Jingshi Road, Jinan, 250103, Shandong Province, PR China; Key Laboratory for Drug Screening Technology of Shandong Academy of Sciences, 28789 East Jingshi Road, Jinan, 250103, Shandong Province, PR China
| | - Chung-Der Hsiao
- Department of Bioscience Technology, Chung Yuan Christian University, Chung-Li, Taiwan
| | - Kechun Liu
- Biology Institute, Qilu University of Technology (Shandong Academy of Sciences), 28789 East Jingshi Road, Jinan, 250103, Shandong Province, PR China; Key Laboratory for Drug Screening Technology of Shandong Academy of Sciences, 28789 East Jingshi Road, Jinan, 250103, Shandong Province, PR China.
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Betim FCM, Oliveira CFD, Souza AMD, Szabo EM, Zanin SMW, Miguel OG, Miguel MD, Dias JDFG. Ocotea nutans (Nees) Mez (Lauraceae): chemical composition, antioxidant capacity and biological properties of essential oil. BRAZ J PHARM SCI 2019. [DOI: 10.1590/s2175-97902019000118284] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
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Bouyahya A, Abrini J, Bakri Y, Dakka N. Les huiles essentielles comme agents anticancéreux : actualité sur le mode d’action. ACTA ACUST UNITED AC 2018. [DOI: 10.3166/s10298-016-1058-z] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
Le cancer est une maladie complexe qui présente un réel problème de santé publique à travers le monde et cause statiquement sept millions de décès chaque année. Au cours des dernières décennies, la thérapie anticancéreuse a connu un réel bouleversement et un foisonnement de découvertes fondamentales. Plusieurs études accumulatives ont révélé l’activité antitumorale des substances naturelles isolées à partir de plantes. Les huiles essentielles (HE) et leurs constituants ont montré des activités anticancéreuses puissantes in vitro et in vivo. Cependant, les mécanismes d’action sont encore peu étudiés et moins connus. Par ailleurs, leur application dans l’industrie pharmaceutique nécessite une spécificité– sélectivité pharmacodynamique absolue. Dans le présent travail, nous présentons une synthèse des travaux réalisés sur les mécanismes d’actions anticancéreuses des HE et leurs composés bioactifs.
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Rigo A, Ferrarini I, Bonalumi A, Tecchio C, Montresor A, Laudanna C, Vinante F. Efficient lysis of B-chronic lymphocytic leukemia cells by the plant-derived sesquiterpene alcohol α-bisabolol, a dual proapoptotic and antiautophagic agent. Oncotarget 2018; 9:25877-25890. [PMID: 29899828 PMCID: PMC5995246 DOI: 10.18632/oncotarget.25398] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2018] [Accepted: 04/28/2018] [Indexed: 12/14/2022] Open
Abstract
The sesquiterpene α-bisabolol (α-BSB) is a cytotoxic agent against acute leukemia and chronic myeloid leukemia cells. Here the profile of α-BSB citotoxicity was evaluated ex vivo in primary mononuclear blood cells isolated from 45 untreated B-chronic lymphocytic leukemia (B-CLL) patients. We studied the effects of α-BSB by flow cytometric and western blotting techniques with the following findings: (1) α-BSB was an effective proapoptotic agent against B-CLL cells (IC50 42 ± 15 μM). It was also active, but to a lesser extent, on normal residual B cells and monocytes (IC50 68 ± 34 and 74 ± 28 μM, respectively; p < 0.01), while T-cells, though not achieving IC50, were nevertheless decreased. (2) Lipid raft content positively correlated with α-BSB cell sensitivity, while neither the phenotype of B-CLL cells nor the disease clinical stage did affect the sensitivity to α-BSB. (3) Flow cytometry analysis evidenced the induction of pores in mitochondrial and lysosomal membrane after 3- to 5-hour exposure of B-CLL cells to α-BSB, leading to apoptosis; in contrast, western blotting analysis showed inhibition of the autophagic flux. Therefore, according to cellular selectivity, α-BSB is a cytotoxic agent preferentially active against leukemic cells, while its lower activity on normal B cells, monocytes and T cells may account for an additive anti-inflammatory effect targeting the leukemia-associated pro-inflammatory microenvironment. Consistent with the observed effects on intracellular processes, α-BSB should be regarded as a dual agent, both activating mitochondrial-based apoptosis and inhibiting autophagy by disrupting lysosomes.
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Affiliation(s)
- Antonella Rigo
- Section of Hematology, Department of Medicine, University of Verona, Verona, Italy
- Cancer Research and Cell Biology Laboratory, Department of Medicine, University of Verona, Verona, Italy
| | - Isacco Ferrarini
- Section of Hematology, Department of Medicine, University of Verona, Verona, Italy
- Cancer Research and Cell Biology Laboratory, Department of Medicine, University of Verona, Verona, Italy
| | - Angela Bonalumi
- Section of Hematology, Department of Medicine, University of Verona, Verona, Italy
| | - Cristina Tecchio
- Section of Hematology, Department of Medicine, University of Verona, Verona, Italy
| | - Alessio Montresor
- Section of General Pathology, Department of Medicine, University of Verona, Verona, Italy
| | - Carlo Laudanna
- Section of General Pathology, Department of Medicine, University of Verona, Verona, Italy
| | - Fabrizio Vinante
- Section of Hematology, Department of Medicine, University of Verona, Verona, Italy
- Cancer Research and Cell Biology Laboratory, Department of Medicine, University of Verona, Verona, Italy
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Leite GDO, Ecker A, Seeger RL, Krum BN, Lugokenski TH, Fachinetto R, Sudati JH, Barbosa NV, Wagner C. Protective effect of (−)-α-bisabolol on rotenone-induced toxicity in Drosophila melanogaster. Can J Physiol Pharmacol 2018; 96:359-365. [DOI: 10.1139/cjpp-2017-0207] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
(−)-α-Bisabolol (BISA) is a sesquiterpene alcohol, which has several recognized biological activities, including anti-inflammatory, anti-irritant, and antibacterial properties. In the present study, we investigated the influence of BISA (5, 25, and 250 μmol/L) on rotenone (500 μmol/L)-induced toxicity in Drosophila melanogaster for 7 days. BISA supplementation significantly decreased rotenone-induced mortality and locomotor deficits. The loss of motor function induced by rotenone correlated with a significant change in stress response factors; it decreased thiol levels, inhibited mitochondria complex I, and increased the mRNA expression of antioxidant marker proteins such as superoxide dismutase (SOD), catalase (CAT), and the keap1 gene product. Taken together, our findings indicate that the toxicity of rotenone is likely due to the direct inhibition of complex I activity, resulting in a high level of oxidative stress. Dietary supplementation with BISA affected the expression of SOD mRNA only at a concentration of 250 μmol/L, and did not affect any other parameter measured. Our results showed a protective effect of BISA on rotenone-induced mortality and locomotor deficits in Drosophila; this effect did not correlate with mitochondrial complex I activity, but may be related to the antioxidant protection afforded by eliminating superoxide generated as a result of rotenone-induced mitochondrial dysfunction.
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Affiliation(s)
- Gerlânia de Oliveira Leite
- Programa de Pós-Graduação em Farmacologia, Universidade Federal de Santa Maria, Santa Maria – RS, Brazil
| | - Assis Ecker
- Programa de Pós-Graduação em Ciências Biológicas – Bioquímica Toxicológica, Universidade Federal de Santa Maria, Santa Maria – RS, Brazil
| | - Rodrigo Lopes Seeger
- Programa de Pós-Graduação em Ciências Biológicas – Bioquímica Toxicológica, Universidade Federal de Santa Maria, Santa Maria – RS, Brazil
| | - Bárbara Nunes Krum
- Programa de Pós-Graduação em Ciências Biológicas – Bioquímica Toxicológica, Universidade Federal de Santa Maria, Santa Maria – RS, Brazil
| | | | - Roselei Fachinetto
- Programa de Pós-Graduação em Farmacologia, Universidade Federal de Santa Maria, Santa Maria – RS, Brazil
| | | | - Nilda Vargas Barbosa
- Programa de Pós-Graduação em Ciências Biológicas – Bioquímica Toxicológica, Universidade Federal de Santa Maria, Santa Maria – RS, Brazil
| | - Caroline Wagner
- Programa de Pós-Graduação em Farmacologia, Universidade Federal de Santa Maria, Santa Maria – RS, Brazil
- Universidade Federal do Pampa, Campus Caçapava do Sul, Caçapava do Sul – RS, Brazil
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15
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De Marchi JGB, Jornada DS, Silva FK, Freitas AL, Fuentefria AM, Pohlmann AR, Guterres SS. Triclosan resistance reversion by encapsulation in chitosan-coated-nanocapsule containing α-bisabolol as core: development of wound dressing. Int J Nanomedicine 2017; 12:7855-7868. [PMID: 29123398 PMCID: PMC5661849 DOI: 10.2147/ijn.s143324] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
The use of nanoparticles may be particularly advantageous in treating bacterial infections due to their multiple simultaneous mechanisms of action. Nanoencapsulation is particularly useful for lipophilic drugs. In this scenario, triclosan is considered a good candidate due to its lipophilicity, broad-spectrum activity, and safety. In the present study, we have developed and characterized an antimicrobial suspension of triclosan and α-bisabolol against pathogenic strains that are resistant (Pseudomonas aeruginosa) and susceptible (Escherichia coli, Staphylococcus aureus, and Candida albicans) to triclosan. We also aimed to determine the minimum inhibitory concentration, using serial microdilution adapted from a CLSI methodology (Clinical and Laboratory Standards Institute). Challenge test was used to confirm the antimicrobial effectiveness of the nanocapsule formulation, as well as after its incorporation into a commercial wound dressing (Veloderm®). The zeta potential of P. aeruginosa before and after contact with cationic nanocapsules and the ratio between the number of nanocapsules per colony forming unit (CFU) were determined to evaluate a possible interaction between nanocapsules and bacteria. The results showed that nanoencapsulation has improved the antimicrobial activity when tested with two different methodologies. The number of nanocapsules per CFU was high even in great dilutions and the zeta potential was reverted after being in contact with the cationic nanocapsules. The nanocapsules were able to improve the activity of triclosan, even when tested within 28 days and when dried in the wound dressing.
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Affiliation(s)
| | | | | | - Ana L Freitas
- Department of Organic Chemistry, Institute of Chemistry, Federal University of Rio Grande do Sul, Porto Alegre, RS, Brazil
| | - Alexandre M Fuentefria
- Department of Organic Chemistry, Institute of Chemistry, Federal University of Rio Grande do Sul, Porto Alegre, RS, Brazil
| | - Adriana R Pohlmann
- Pharmaceutical Sciences Graduate Program
- Department of Organic Chemistry, Institute of Chemistry, Federal University of Rio Grande do Sul, Porto Alegre, RS, Brazil
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16
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Chirumbolo S, Bjørklund G. The sesquiterpene α-bisabolol in the adipocyte-cancer desmoplastic crosstalk: does it have an action on epithelial-mesenchymal transition mechanisms? Int J Clin Oncol 2017; 22:222-228. [PMID: 27942879 DOI: 10.1007/s10147-016-1072-z] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2016] [Accepted: 12/02/2016] [Indexed: 12/12/2022]
Abstract
Alpha-bisabolol is a plant-derived sesquiterpene alcohol recently associated with a supposed anti-cancer action due to its ability to induce BID-related apoptosis. The molecule, which enters the cell through lipid rafts, may also interact with kisspeptin receptor 1, which has recently been associated with tumor mobility and invasiveness. This evidence suggests the possibility that α-bisabolol might act on the epithelial-mesenchymal transition mechanism, closely associated with the desmoplastic reaction of adipose tissue surrounding a pancreatic ductal adenocarcinoma. This review addresses the issue on the basis of the most recent reported literature in the field.
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Affiliation(s)
- Salvatore Chirumbolo
- Department of Neurological and Movement Sciences, University of Verona, Strada Le Grazie 9, Verona, Italy.
- CONEM Scientific Secretary, Mo i Rana, Norway.
| | - Geir Bjørklund
- Council for Nutritional and Environmental Medicine, Mo i Rana, Norway
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17
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Biological Importance of Cotton By-Products Relative to Chemical Constituents of the Cotton Plant. Molecules 2017; 22:molecules22010093. [PMID: 28067842 PMCID: PMC6155835 DOI: 10.3390/molecules22010093] [Citation(s) in RCA: 42] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2016] [Revised: 12/21/2016] [Accepted: 12/26/2016] [Indexed: 01/28/2023] Open
Abstract
Although cultivated for over 7000 years, mainly for production of cotton fibre, the cotton plant has not been fully explored for potential uses of its other parts. Despite cotton containing many important chemical compounds, limited understanding of its phytochemical composition still exists. In order to add value to waste products of the cotton industry, such as cotton gin trash, this review focuses on phytochemicals associated with different parts of cotton plants and their biological activities. Three major classes of compounds and some primary metabolites have been previously identified in the plant. Among these compounds, most terpenoids and their derivatives (51), fatty acids (four), and phenolics (six), were found in the leaves, bolls, stalks, and stems. Biological activities, such as anti-microbial and anti-inflammatory activities, are associated with some of these phytochemicals. For example, β-bisabolol, a sesquiterpenoid enriched in the flowers of cotton plants, may have anti-inflammatory product application. Considering the abundance of biologically active compounds in the cotton plant, there is scope to develop a novel process within the current cotton fibre production system to separate these valuable phytochemicals, developing them into potentially high-value products. This scenario may present the cotton processing industry with an innovative pathway towards a waste-to-profit solution.
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18
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Rigo A, Vinante F. The antineoplastic agent α-bisabolol promotes cell death by inducing pores in mitochondria and lysosomes. Apoptosis 2016; 21:917-27. [DOI: 10.1007/s10495-016-1257-y] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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19
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Rocha JBT, Leite GDO, Dubois AF, Seeger RL, Boligon AA, Costa JGM, Lugokenski TH, Campos AR, Fachinetto R, Kamdem JP, Wagner C. In vitro Antioxidant Activity Investigation of Vanillomopsis arborea Baker Aqueous Extracts, Essential Oil and Isolated Compound: (-)-α-bisabolol. ACTA ACUST UNITED AC 2016. [DOI: 10.5567/pharmacologia.2016.193.201] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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20
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Mao X, He J, Li T, Lu Z, Sun J, Meng Y, Abliz Z, Chen J. Application of imaging mass spectrometry for the molecular diagnosis of human breast tumors. Sci Rep 2016; 6:21043. [PMID: 26868906 PMCID: PMC4751527 DOI: 10.1038/srep21043] [Citation(s) in RCA: 43] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2015] [Accepted: 01/15/2016] [Indexed: 01/02/2023] Open
Abstract
Distinguishing breast invasive ductal carcinoma (IDC) and breast ductal carcinoma in situ (DCIS) is a key step in breast surgery, especially to determine whether DCIS is associated with tumor cell micro-invasion. However, there is currently no reliable method to obtain molecular information for breast tumor analysis during surgery. Here, we present a novel air flow-assisted ionization (AFAI) mass spectrometry imaging method that can be used in ambient environments to differentiate breast cancer by analyzing lipids. In this study, we demonstrate that various subtypes and histological grades of IDC and DCIS can be discriminated using AFAI-MSI: phospholipids were more abundant in IDC than in DCIS, whereas fatty acids were more abundant in DCIS than in IDC. The classification of specimens in the subtype and grade validation sets showed 100% and 78.6% agreement with the histopathological diagnosis, respectively. Our work shows the rapid classification of breast cancer utilizing AFAI-MSI. This work suggests that this method could be developed to provide surgeons with nearly real-time information to guide surgical resections.
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Affiliation(s)
- Xinxin Mao
- Department of Pathology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100730, China
| | - Jiuming He
- State Key Laboratory of Bioactive Substance and Function of Natural Medicines, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100050, China
| | - Tiegang Li
- State Key Laboratory of Bioactive Substance and Function of Natural Medicines, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100050, China
| | - Zhaohui Lu
- Department of Pathology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100730, China
| | - Jian Sun
- Department of Pathology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100730, China
| | - Yunxiao Meng
- Department of Pathology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100730, China
| | - Zeper Abliz
- State Key Laboratory of Bioactive Substance and Function of Natural Medicines, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100050, China
| | - Jie Chen
- Department of Pathology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100730, China
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21
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Corpas-López V, Morillas-Márquez F, Navarro-Moll MC, Merino-Espinosa G, Díaz-Sáez V, Martín-Sánchez J. (-)-α-Bisabolol, a Promising Oral Compound for the Treatment of Visceral Leishmaniasis. JOURNAL OF NATURAL PRODUCTS 2015; 78:1202-1207. [PMID: 26076227 DOI: 10.1021/np5008697] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
The aim of the present study was to assess the in vitro and in vivo activity of (-)-α-bisabolol (1) against the etiological agents of visceral leishmaniasis. Bone-marrow-derived macrophages were infected with Leishmania infantum or L. donovani promastigotes and incubated with (-)-α-bisabolol at different concentrations. Pentamidine isethionate and meglumine antimoniate were used as reference drugs. Inhibitory concentration 50% (IC50) and cytotoxic concentration 50% (CC50) were calculated. Balb/c mice were infected intraperitoneally with stationary-phase promastigotes. They were treated with (-)-α-bisabolol at different doses orally, meglumine antimoniate at 104 mg Sb(V)/kg, or a combination of both. (-)-α-Bisabolol proved to be innocuous to mammal cells and active against L. infantum and L. donovani intracellular amastigotes (IC50 55 and 39 μM, respectively). Compound 1 also proved to be active in an in vivo model of visceral leishmaniasis due to L. infantum, as it reduced parasite load in the spleen and liver by 71.60% and 89.22%, respectively, at 200 mg/kg without showing toxicity. (-)-α-Bisabolol (1) is a nontoxic compound that was proven to be active against visceral leishmaniasis in an in vivo murine model orally. It was more effective than meglumine antimoniate at reducing spleen parasite load and as effective as this antimonial drug in the liver.
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Affiliation(s)
- Victoriano Corpas-López
- †Departamento de Parasitología and ‡Departamento de Farmacología, Facultad de Farmacia, Universidad de Granada, Granada, Spain
| | - Francisco Morillas-Márquez
- †Departamento de Parasitología and ‡Departamento de Farmacología, Facultad de Farmacia, Universidad de Granada, Granada, Spain
| | - M Concepción Navarro-Moll
- †Departamento de Parasitología and ‡Departamento de Farmacología, Facultad de Farmacia, Universidad de Granada, Granada, Spain
| | - Gemma Merino-Espinosa
- †Departamento de Parasitología and ‡Departamento de Farmacología, Facultad de Farmacia, Universidad de Granada, Granada, Spain
| | - Victoriano Díaz-Sáez
- †Departamento de Parasitología and ‡Departamento de Farmacología, Facultad de Farmacia, Universidad de Granada, Granada, Spain
| | - Joaquina Martín-Sánchez
- †Departamento de Parasitología and ‡Departamento de Farmacología, Facultad de Farmacia, Universidad de Granada, Granada, Spain
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22
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Chirumbolo S. Alpha-bisabolol, not a matter for cancer therapy. Commentary: "Research on the immunosuppressive activity of ingredients contained in sunscreens". Front Pharmacol 2015; 6:96. [PMID: 26029105 PMCID: PMC4426726 DOI: 10.3389/fphar.2015.00096] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2015] [Accepted: 04/19/2015] [Indexed: 11/13/2022] Open
Affiliation(s)
- Salvatore Chirumbolo
- Department of Medicine, University Laboratories for Medical Research (LURM)-Medicine D, University of Verona Verona, Italy
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23
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de Siqueira RJB, Ribeiro-Filho HV, Freire RS, Cosker F, Freire WBS, Vasconcelos-Silva AA, Soares MA, Lahlou S, Magalhães PJC. (-)-α-Bisabolol inhibits preferentially electromechanical coupling on rat isolated arteries. Vascul Pharmacol 2014; 63:37-45. [PMID: 25128618 DOI: 10.1016/j.vph.2014.06.006] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2014] [Revised: 06/09/2014] [Accepted: 06/26/2014] [Indexed: 01/23/2023]
Abstract
Previous findings enable us to hypothesize that (-)-α-bisabolol acts as inhibitor of voltage-dependent Ca(2+) channels in smooth muscle. The current study was aimed at consolidating such hypothesis through the recording of isometric tension, measurement of intracellular Ca(2+) as well as discovery of channel target using in silico analysis. In rat aortic rings, (-)-α-bisabolol (1-1000 µM) relaxed KCl- and phenylephrine-elicited contractions, but the IC50 differed significantly (22.8 [17.6-27.7] and 200.7 [120.4-334.6] µM, respectively). The relaxation of phenylephrine contractions remained unaffected by l-NAME, indomethacin, 1H-[1,2,4]oxadiazolo[4,3-a]quinoxalin-1-one, tetraethylammonium, glibenclamide or KT-5720. Under Ca(2+)-free conditions, (-)-α-bisabolol did not alter the contractions evoked by phenylephrine or caffeine whereas it reduced those evoked by CaCl2 in KCl-, but not in PHE-stimulated preparations. Furthermore, it did not significantly alter the contractions evoked by phorbol 12,13-dibutyrate or induced by the extracellular Ca(2+) restoration in cyclopiazonic acid-treated preparations. In mesenteric rings loaded with Fluo-4 AM, (-)-α-bisabolol blunted the tension and the cytosolic levels of Ca(2+) in response to K(+) but not to norepinephrine. Silico docking analysis of the Cavβ2a subunit of voltage-dependent Ca(2+) channel indicated putative docking sites for (-)-α-bisabolol. These findings reinforce the ability of (-)-α-bisabolol to inhibit preferentially contractile responses evoked by Ca(2+) influx through voltage-dependent Ca(2+) channels.
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Affiliation(s)
- R J B de Siqueira
- Department of Physiology and Pharmacology, School of Medicine, Federal University of Ceará, Fortaleza, CE, Brazil.
| | - H V Ribeiro-Filho
- Department of Physiology and Pharmacology, School of Medicine, Federal University of Ceará, Fortaleza, CE, Brazil
| | - R S Freire
- Department of Physiology and Pharmacology, School of Medicine, Federal University of Ceará, Fortaleza, CE, Brazil
| | - F Cosker
- Department of Physiology and Pharmacology, School of Medicine, Federal University of Ceará, Fortaleza, CE, Brazil
| | - W B S Freire
- Department of Physiology and Pharmacology, School of Medicine, Federal University of Ceará, Fortaleza, CE, Brazil
| | - A A Vasconcelos-Silva
- Department of Physiology and Pharmacology, School of Medicine, Federal University of Ceará, Fortaleza, CE, Brazil
| | - M A Soares
- Department of Physiology and Pharmacology, School of Medicine, Federal University of Ceará, Fortaleza, CE, Brazil
| | - S Lahlou
- Department of Physiology and Pharmacology, School of Medicine, Federal University of Ceará, Fortaleza, CE, Brazil
| | - P J C Magalhães
- Department of Physiology and Pharmacology, School of Medicine, Federal University of Ceará, Fortaleza, CE, Brazil
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24
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Lesgards JF, Baldovini N, Vidal N, Pietri S. Anticancer Activities of Essential Oils Constituents and Synergy with Conventional Therapies: A Review. Phytother Res 2014; 28:1423-46. [DOI: 10.1002/ptr.5165] [Citation(s) in RCA: 85] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2013] [Revised: 03/09/2014] [Accepted: 04/11/2014] [Indexed: 01/19/2023]
Affiliation(s)
| | - Nicolas Baldovini
- Faculté des Sciences; University of Nice-Sophia Antipolis, CNRS UMR 7272, Institut de Chimie de Nice; Avenue Valrose 06108 Nice Cedex 2 France
| | - Nicolas Vidal
- Aix Marseille Université, CNRS, ICR UMR 7273; 13397 Marseille France
| | - Sylvia Pietri
- Aix Marseille Université, CNRS, ICR UMR 7273; 13397 Marseille France
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25
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Avonto C, Wang M, Chittiboyina AG, Avula B, Zhao J, Khan IA. Hydroxylated bisabolol oxides: evidence for secondary oxidative metabolism in Matricaria chamomilla. JOURNAL OF NATURAL PRODUCTS 2013; 76:1848-1853. [PMID: 24070008 DOI: 10.1021/np4003349] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
German chamomile (Matricaria chamomilla) is one of the most popular medicinal plants used in Western herbal medicine. Among the various phytochemicals present in the essential oil of the flowers of German chamomile, bisabolol and its oxidized metabolites are considered as marker compounds for distinguishing different chemotypes. These compounds are influential in mediating the aroma of the essential oil of M. chamomilla and contribute to the therapeutic properties (anti-inflammatory, antibacterial, insecticidal, and antiulcer) of this species. In order to find other possible bisabolol derivatives as marker compounds for authentication of German chamomile in botanical and commercial products, an in-depth investigation using a GC-assisted fractionation procedure was performed on nonpolar fractions. As a result of this approach, three new hydroxylated derivatives of bisabolol oxides A and B (1-3) have been isolated from M. chamomilla. Plausible biogenetic pathways are presented.
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Affiliation(s)
- Cristina Avonto
- National Center for Natural Products Research, The University of Mississippi , Mississippi 38677, United States
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26
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Bonifacio M, Rigo A, Guardalben E, Bergamini C, Cavalieri E, Fato R, Pizzolo G, Suzuki H, Vinante F. α-bisabolol is an effective proapoptotic agent against BCR-ABL(+) cells in synergism with Imatinib and Nilotinib. PLoS One 2012; 7:e46674. [PMID: 23056396 PMCID: PMC3463553 DOI: 10.1371/journal.pone.0046674] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2012] [Accepted: 09/04/2012] [Indexed: 01/04/2023] Open
Abstract
We showed that α-bisabolol is active against primary acute leukemia cells, including BCR-ABL+ acute lymphoblastic leukemias (ALL). Here we studied the activity of α-bisabolol against BCR-ABL+ cells using 3 cell lines (K562, LAMA-84, CML-T1) and 10 primary BCR-ABL+ ALL samples. We found that: (a) α-bisabolol was effective in reducing BCR-ABL+ cell viabilty at concentrations ranging from 53 to 73 µM; (b) α-bisabolol concentrations in BCR-ABL+ cellular compartments were 4- to 12-fold higher than in normal cells, thus indicating a preferential intake in neoplastic cells; (c) α-bisabolol displayed a slight to strong synergism with the Tyrosine Kinase Inhibitors (TKI) imatinib and nilotinib: the combination of α-bisabolol+imatinib allowed a dose reduction of each compound up to 7.2 and 9.4-fold respectively, while the combination of α-bisabolol+nilotinib up to 6.7 and 5-fold respectively; (d) α-bisabolol-induced apoptosis was associated with loss of plasma membrane integrity, irreversible opening of mitochondrial transition pore, disruption of mitochondrial potential, inhibition of oxygen consumption and increase of intracellular reactive oxygen species. These data indicate α-bisabolol as a candidate for treatment of BCR-ABL+ leukemias to overcome resistance to TKI alone and to target leukemic cells through BCR-ABL-independent pathways.
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Affiliation(s)
| | - Antonella Rigo
- Department of Medicine, Section of Hematology, University of Verona, Verona, Italy
| | - Emanuele Guardalben
- Department of Medicine, Section of Hematology, University of Verona, Verona, Italy
| | - Christian Bergamini
- Department of Biochemistry “G. Moruzzi”, University of Bologna, Bologna, Italy
| | - Elisabetta Cavalieri
- Department of Life and Reproduction Sciences, Section of Biochemistry, University of Verona, Verona, Italy
| | - Romana Fato
- Department of Biochemistry “G. Moruzzi”, University of Bologna, Bologna, Italy
| | - Giovanni Pizzolo
- Department of Medicine, Section of Hematology, University of Verona, Verona, Italy
| | - Hisanori Suzuki
- Department of Life and Reproduction Sciences, Section of Biochemistry, University of Verona, Verona, Italy
| | - Fabrizio Vinante
- Department of Medicine, Section of Hematology, University of Verona, Verona, Italy
- * E-mail:
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27
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Taglialatela-Scafati O, Pollastro F, Cicione L, Chianese G, Bellido ML, Munoz E, Özen HÇ, Toker Z, Appendino G. STAT-3 inhibitory bisabolanes from Carthamus glaucus. JOURNAL OF NATURAL PRODUCTS 2012; 75:453-458. [PMID: 22309250 DOI: 10.1021/np2008973] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
Apart from a large amount (ca. 2.0%) of α-bisabolol β-D-fucopyranoside (2a), the aerial parts of the Mediterranean weed Carthamus glaucus afforded an unusual triglyceride (E-2-crotonyl-1,3-distearolylglycerol, 7), two lipophilic flavonoids (6a,b), and a series of bisabolane fucopyranosides variously acylated on the sugar moiety (2b-e) or oxidized on the terpenoid core (3, 4a,b, 5a,b). The fucopyranoside 2a is more soluble in polar media and more versatile in terms of formulation than its aglycone [(-)-α-bisabolol, 1], an anti-inflammatory cosmetic ingredient in current short supply in its natural form. A comparative investigation of the activity of α-bisabolol (1a), the fucopyranoside 2a, and its senecioate 2b on transcription factors involved in inflammation and cancer pathways (NF-κB and STAT-3) showed only marginal activity on NF-κB inhibition for all compounds, while STAT-3 was inhibited potently by the fucoside 2a and, to a lesser extent, also by α-bisabolol. These observations qualify 2a as an easily available compound, both as an apoptotic lead structure and as a potential alternative to natural α-bisabolol (1) for pharmaceutical and/or cosmetic development.
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Affiliation(s)
- Orazio Taglialatela-Scafati
- Dipartimento di Chimica delle Sostanze Naturali, Università di Napoli Federico II, Via Montesano 49, 80131 Napoli, Italy.
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28
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Seki T, Kokuryo T, Yokoyama Y, Suzuki H, Itatsu K, Nakagawa A, Mizutani T, Miyake T, Uno M, Yamauchi K, Nagino M. Antitumor effects of α-bisabolol against pancreatic cancer. Cancer Sci 2011; 102:2199-205. [PMID: 21883695 DOI: 10.1111/j.1349-7006.2011.02082.x] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022] Open
Abstract
In the present study, we investigated whether α-bisabolol, a sesquiterpene alcohol present in essential oils derived from a variety of plants, has antitumor effects against pancreatic cancer. α-Bisabolol induced a decrease in cell proliferation and viability in pancreatic cancer cell lines (KLM1, KP4, Panc1, MIA Paca2), but not in pancreatic epithelial cells (ACBRI515). α-Bisabolol treatment induced apoptosis and suppressed Akt activation in pancreatic cancer cell lines. Furthermore, α-bisabolol treatment induced the overexpression of early growth response-1 (EGR1), whereas EGR1 siRNA decreased the α-bisabolol-induced cell death of KLM1 cells. Tumor growth in both subcutaneous and peritoneal xenograft nude mouse models was significantly inhibited by intragastric administration of 1000 mg/kg of α-bisabolol, once a week for three weeks. The results indicate that α-bisabolol could be a novel therapeutic option for the treatment of pancreatic cancer.
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Affiliation(s)
- Takashi Seki
- Division of Surgical Oncology, Department of Surgery, Nagoya University Graduate School of Medicine, Nagoya, Japan
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Cavalieri E, Rigo A, Bonifacio M, Carcereri de Prati A, Guardalben E, Bergamini C, Fato R, Pizzolo G, Suzuki H, Vinante F. Pro-apoptotic activity of α-bisabolol in preclinical models of primary human acute leukemia cells. J Transl Med 2011; 9:45. [PMID: 21510902 PMCID: PMC3112094 DOI: 10.1186/1479-5876-9-45] [Citation(s) in RCA: 48] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2010] [Accepted: 04/21/2011] [Indexed: 01/02/2023] Open
Abstract
Background We previously demonstrated that the plant-derived agent α-bisabolol enters cells via lipid rafts, binds to the pro-apoptotic Bcl-2 family protein BID, and may induce apoptosis. Here we studied the activity of α-bisabolol in acute leukemia cells. Methods We tested ex vivo blasts from 42 acute leukemias (14 Philadelphia-negative and 14 Philadelphia-positive B acute lymphoid leukemias, Ph-/Ph+B-ALL; 14 acute myeloid leukemias, AML) for their sensitivity to α-bisabolol in 24-hour dose-response assays. Concentrations and time were chosen based on CD34+, CD33+my and normal peripheral blood cell sensitivity to increasing α-bisabolol concentrations for up to 120 hours. Results A clustering analysis of the sensitivity over 24 hours identified three clusters. Cluster 1 (14 ± 5 μM α-bisabolol IC50) included mainly Ph-B-ALL cells. AML cells were split into cluster 2 and 3 (45 ± 7 and 65 ± 5 μM IC50). Ph+B-ALL cells were scattered, but mainly grouped into cluster 2. All leukemias, including 3 imatinib-resistant cases, were eventually responsive, but a subset of B-ALL cells was fairly sensitive to low α-bisabolol concentrations. α-bisabolol acted as a pro-apoptotic agent via a direct damage to mitochondrial integrity, which was responsible for the decrease in NADH-supported state 3 respiration and the disruption of the mitochondrial membrane potential. Conclusion Our study provides the first evidence that α-bisabolol is a pro-apoptotic agent for primary human acute leukemia cells.
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Leite GDO, Leite LH, Sampaio RDS, Araruna MKA, de Menezes IRA, da Costa JGM, Campos AR. (−)-α-Bisabolol attenuates visceral nociception and inflammation in mice. Fitoterapia 2011; 82:208-11. [DOI: 10.1016/j.fitote.2010.09.012] [Citation(s) in RCA: 52] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2010] [Revised: 09/21/2010] [Accepted: 09/22/2010] [Indexed: 10/19/2022]
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Antitumor activity of (−)-α-bisabolol-based thiosemicarbazones against human tumor cell lines. Eur J Med Chem 2010; 45:2987-93. [DOI: 10.1016/j.ejmech.2010.03.026] [Citation(s) in RCA: 47] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2009] [Revised: 03/15/2010] [Accepted: 03/16/2010] [Indexed: 11/30/2022]
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Magnelli L, Caldini R, Schiavone N, Suzuki H, Chevanne M. Differentiating and apoptotic dose-dependent effects in (-)-alpha-bisabolol-treated human endothelial cells. JOURNAL OF NATURAL PRODUCTS 2010; 73:523-526. [PMID: 20364847 DOI: 10.1021/np9003933] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
The effect on angiogenesis of (-)-alpha-bisabolol [(-)-6-methyl-2-(4-methyl-3-cyclohexen-1-yl)-5-hepten-2-ol] (1), a widely distributed plant sesquiterpene alcohol, was investigated for the first time. Human endothelial cells treated with 1 were analyzed for their ability to differentiate and organize in microvessels and for their sensitivity to this compound in terms of cytotoxicity and cell growth inhibition. Within 24 h of the treatment with 5 microM 1, cells underwent massive death. Apoptosis induction was responsible for cytotoxicity triggered by 1 as revealed by the release of cytochrome c from the mitochondria, reduction of the Bcl-2/Bax ratio, and caspase 3 activation. At a lower, non-apoptotic concentration (0.25 microM), 1 showed a differentiating effect resulting in growth inhibition, invasiveness reduction, and tubule stabilization.
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Affiliation(s)
- Lucia Magnelli
- Department of Experimental Pathology and Oncology, University of Firenze, Florence, Italy
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Chen W, Hou J, Yin Y, Jang J, Zheng Z, Fan H, Zou G. alpha-Bisabolol induces dose- and time-dependent apoptosis in HepG2 cells via a Fas- and mitochondrial-related pathway, involves p53 and NFkappaB. Biochem Pharmacol 2010; 80:247-54. [PMID: 20346922 DOI: 10.1016/j.bcp.2010.03.021] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2010] [Revised: 03/15/2010] [Accepted: 03/15/2010] [Indexed: 01/16/2023]
Abstract
In this study, the apoptotic effect of alpha-bisabolol, a sesquiterpene, against human liver carcinoma cell line HepG2 was investigated. MTT assay showed alpha-bisabolol could effectively induce cytotoxicity in several human cancer cell lines (PC-3, Hela, ECA-109 and HepG2). The results of nuclei morphology examination, DNA fragmentation detection, flow cytometry analysis and cleavage of poly(ADP-ribose) polymerase and caspases indicated alpha-bisabolol might induce dose- and time-dependent apoptosis in HepG2 cells. Western blot data also showed a cascade activation of caspases-8,-9,-3 and promoted expression of Fas, implying caspase-8 might function as an upstream regulator, and the Fas-related pathway might be involved in this process. Preparation of mitochondrial/cytosol fraction followed with immunoblot analysis showed the release of chromosome c from mitochondria, down-regulated expression of Bcl-2 and translocation of Bax, Bak and Bid, suggesting the mitochondrial-related pathway might be involved in alpha-bisabolol-induced apoptosis either. Detection of accumulation of nuclear wild-type p53 and up-regulated expression of NFkappaB indicated these two key regulator with transcriptional decision-making function in various signaling pathways might also play a role in alpha-bisabolol-induced apoptosis in HepG2 cells.
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Rich RL, Myszka DG. Grading the commercial optical biosensor literature-Class of 2008: 'The Mighty Binders'. J Mol Recognit 2010; 23:1-64. [PMID: 20017116 DOI: 10.1002/jmr.1004] [Citation(s) in RCA: 109] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Optical biosensor technology continues to be the method of choice for label-free, real-time interaction analysis. But when it comes to improving the quality of the biosensor literature, education should be fundamental. Of the 1413 articles published in 2008, less than 30% would pass the requirements for high-school chemistry. To teach by example, we spotlight 10 papers that illustrate how to implement the technology properly. Then we grade every paper published in 2008 on a scale from A to F and outline what features make a biosensor article fabulous, middling or abysmal. To help improve the quality of published data, we focus on a few experimental, analysis and presentation mistakes that are alarmingly common. With the literature as a guide, we want to ensure that no user is left behind.
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Affiliation(s)
- Rebecca L Rich
- Center for Biomolecular Interaction Analysis, University of Utah, Salt Lake City, UT 84132, USA
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São Pedro A, Detoni C, Ferreira D, Cabral-Albuquerque E, Sarmento B. Validation of a high-performance liquid chromatography method for the determination of (-)-alpha-bisabolol from particulate systems. Biomed Chromatogr 2009; 23:966-72. [PMID: 19353738 DOI: 10.1002/bmc.1208] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
A reversed-phase high performance liquid chromatography method has been developed and validated for determination and quantitation of the natural sesquiterpene (-)-alpha-bisabolol. Furthermore the application of the method was done by characterization of chitosan milispheres and liposomes entrapping Zanthoxylum tingoassuiba essential oil, which contains appreciable amount of (-)-alpha-bisabolol. A reversed-phase C(18) column and gradient elution was used with the mobile phase composed of (A) acetonitrile-water-phosphoric acid (19:80:1) and (B) acetonitrile. The eluent was pumped at a flow rate of 0.8 mL/min with UV detection at 200 nm. In the range 0.02-0.64 mg/mL the assay showed good linearity (R(2 )= 0.9999) and specificity for successful identification and quantitation of (-)-alpha-bisabolol in the essential oil without interfering peaks. The method also showed good reproducibility, demonstrating inter-day and intra-day precision based on relative standard deviation values (up to 3.03%), accuracy (mean recovery of 100.69% +/- 1.05%) and low values of detection and quantitation limits (0.0005 and 0.0016 mg/mL, respectively). The method was also robust for showing a recovery of 98.81% under a change of solvent in standard solutions. The suitability of the method was demonstrated by the successful determination of association efficiency of the (-)-alpha-bisabolol in chitosan milispheres and liposomes.
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Affiliation(s)
- André São Pedro
- Medical Subject Research Laboratory, Faculty of Pharmacy, Federal University of Bahia, Brazil
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Bisabolol-Induced Gastroprotection Against Acute Gastric Lesions: Role of Prostaglandins, Nitric Oxide, and K+ATP Channels. J Med Food 2009; 12:1403-6. [DOI: 10.1089/jmf.2008.0290] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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A Review of the Application and Pharmacological Properties of α-Bisabolol and α-Bisabolol-Rich Oils. J AM OIL CHEM SOC 2009. [DOI: 10.1007/s11746-009-1483-3] [Citation(s) in RCA: 121] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Cavalieri E, Bergamini C, Mariotto S, Leoni S, Perbellini L, Darra E, Suzuki H, Fato R, Lenaz G. Involvement of mitochondrial permeability transition pore opening in alpha-bisabolol induced apoptosis. FEBS J 2009; 276:3990-4000. [PMID: 19570051 DOI: 10.1111/j.1742-4658.2009.07108.x] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Alpha-bisabolol is a natural monocyclic sesquiterpene alcohol. It has been used in cosmetics for hundreds of years because of its perceived skin-healing properties. Alpha-bisabolol is known to have anti-irritant, anti-inflammatory and antimicrobial properties. In precedent studies, we described how alpha-bisabolol exerts a selective pro-apoptotic action towards transformed cells [Cavalieri E et al. (2004) Biochem Biophys Res Commun 315, 589-594] and its uptake is mediated by lipid rafts on the plasma membrane [Darra E et al. (2008) Arch Biochem Biophys 476, 113-123]. In this study, we hypothesize that the intracellular target of alpha-bisabolol may be the mitochondrial permeability transition pore (mPTP). To evaluate this hypothesis, we used one transformed cell line (human glioma T67) in comparison with a nontransformed one (human fibroblasts). We assessed the effect of a specific mPTP inhibitor (cyclosporine A) on the toxic action of alpha-bisabolol. Results show that the alpha-bisabolol-induced decrease in oxygen consumption is abolished by the addition of cyclosporine A in T67 cells, indicating that alpha-bisabolol may target mPTP. The central role of mitochondria was also demonstrated by using galactose to force cells to a more aerobic metabolism. In this condition, we observed higher alpha-bisabolol toxicity. Furthermore, we studied the effect of alpha-bisabolol on isolated rat liver mitochondria. This study expands the notion of the specific action of alpha-bisabolol on transformed cells and suggests that it may act by disturbing the structure and function of the mPTP. Alpha-bisabolol toxicity is clearly related to its cellular uptake, which is higher in transformed cell lines.
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Manara A, Lindsay J, Marchioretto M, Astegno A, Gilmore AP, Esposti MD, Crimi M. Bid binding to negatively charged phospholipids may not be required for its pro-apoptotic activity in vivo. Biochim Biophys Acta Mol Cell Biol Lipids 2009; 1791:997-1010. [PMID: 19463967 DOI: 10.1016/j.bbalip.2009.05.003] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2008] [Revised: 05/08/2009] [Accepted: 05/13/2009] [Indexed: 01/07/2023]
Abstract
Bid is a ubiquitous pro-apoptotic member of the Bcl-2 family that has been involved in a variety of pathways of cell death. Unique among pro-apoptotic proteins, Bid is activated after cleavage by the apical caspases of the extrinsic pathway; subsequently it moves to mitochondria, where it promotes the release of apoptogenic proteins in concert with other Bcl-2 family proteins like Bak. Diverse factors appear to modulate the pro-apoptotic action of Bid, from its avid binding to mitochondrial lipids (in particular, cardiolipin) to multiple phosphorylations at sites that can modulate its caspase cleavage. This work addresses the question of how the lipid interactions of Bid that are evident in vitro actually impact on its pro-apoptotic action within cells. Using site-directed mutagenesis, we identified mutations that reduced mouse Bid lipid binding in vitro. Mutation of the conserved residue Lys157 specifically decreased the binding to negatively charged lipids related to cardiolipin and additionally affected the rate of caspase cleavage. However, this lipid-binding mutant had no discernable effect on Bid pro-apoptotic function in vivo. The results are interpreted in relation to an underlying interaction of Bid with lysophosphatidylcholine, which is not disrupted in any mutant retaining pro-apoptotic function both in vitro and in vivo.
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Affiliation(s)
- Anna Manara
- Department of Biotechnology, University of Verona, Strada le Grazie 15, 37134 Verona, Italy
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Piochon M, Legault J, Gauthier C, Pichette A. Synthesis and cytotoxicity evaluation of natural alpha-bisabolol beta-D-fucopyranoside and analogues. PHYTOCHEMISTRY 2009; 70:228-236. [PMID: 19136127 DOI: 10.1016/j.phytochem.2008.11.013] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/28/2008] [Revised: 10/16/2008] [Accepted: 11/26/2008] [Indexed: 05/27/2023]
Abstract
alpha-Bisabolol beta-d-fucopyranoside, a cytotoxic naturally occurring compound, was efficiently synthesized along with five other alpha-bisabolol glycosides (beta-d-glucoside, beta-d-galactoside, alpha-d-mannoside, beta-d-xyloside and alpha-l-rhamnoside). Glycosidation of alpha-bisabolol was performed using Schmidt's inverse procedure and provided excellent yields (83-95%). Cytotoxicity was evaluated against a broad panel of cancerous cell lines including human and rat glioma (U-87, U-251 and GL-261) since the anticancer activity of alpha-bisabolol was previously demonstrated against brain tumor cell lines. The addition of a sugar moiety markedly increased alpha-bisabolol cytotoxicity in most cases. Among the synthesized glycosides, alpha-bisabolol alpha-l-rhamnopyranoside exhibited the strongest cytotoxic activity with IC(50) ranging from 40 to 64muM. According to ADME in silico predictions, this glycoside closely respects physicochemical parameters necessary to cross the blood-brain barrier passively.
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Affiliation(s)
- Marianne Piochon
- Laboratoire d'Analyse et de Séparation des Essences Végétales (LASEVE), Département des Sciences Fondamentales, Université du Québec à Chicoutimi (UQAC), 555 boul. de l'Université, Chicoutimi, Québec, Canada G7H 2B1
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