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Laneri F, Conte C, Parisi C, Catanzano O, Fraix A, Quaglia F, Sortino S. On the photobehaviour of curcumin in biocompatible hosts: The role of H-abstraction in the photodegradation and photosensitization. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY. B, BIOLOGY 2023; 245:112756. [PMID: 37454510 DOI: 10.1016/j.jphotobiol.2023.112756] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/01/2023] [Revised: 06/24/2023] [Accepted: 07/10/2023] [Indexed: 07/18/2023]
Abstract
Curcumin (CUR) is a naturally occurring pigment extensively studied due to its therapeutic activity and delivered by suitable nanocarriers to overcome poor solubility in aqueous media. The significant absorption of CUR in the visible blue region has prompted its use as a potential phototherapeutic agent in treating infectious and cancer diseases, although the mechanism underlying the phototoxic effects is still not fully understood. This contribution investigates the photobehaviour of CUR within polymeric micelles, microemulsions, and zein nanoparticles, chosen as biocompatible nanocarriers, and human serum albumin as a representative biomolecule. Spectroscopic studies indicate that in all host systems, the enolic tautomeric form of CUR is converted in a significant amount of the diketo form because of the perturbation of the intramolecular hydrogen bond. This leads to intermolecular H-abstraction from the host components by the lowest excited triplet state of CUR with the formation of the corresponding ketyl radical, detected by nanosecond laser flash photolysis. This radical is oxidized by molecular oxygen, likely generating peroxyl and hydroperoxyl radical species, unless in Zein, reasonably due to the poor availability of oxygen in the closely packed structure of this nanocarrier. In contrast, no detectable formation of singlet oxygen was revealed in all the systems. Overall these results highlight the key role of the H-abstraction process over singlet oxygen sensitization as a primary photochemical pathway strictly dictated by the specific features of the microenvironment, providing new insights into the photoreactivity of CUR in biocompatible hosts that can also be useful for a better understanding of its phototoxicity mechanism.
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Affiliation(s)
- Francesca Laneri
- PhotoChemLab, Department of Drug and Health Sciences, University of Catania, I-95125 Catania, Italy
| | - Claudia Conte
- Drug Delivery Laboratory, Department of Pharmacy, University of Napoli Federico II, I-80131 Napoli, Italy
| | - Cristina Parisi
- PhotoChemLab, Department of Drug and Health Sciences, University of Catania, I-95125 Catania, Italy
| | - Ovidio Catanzano
- Drug Delivery Laboratory, Department of Pharmacy, University of Napoli Federico II, I-80131 Napoli, Italy
| | - Aurore Fraix
- PhotoChemLab, Department of Drug and Health Sciences, University of Catania, I-95125 Catania, Italy.
| | - Fabiana Quaglia
- Drug Delivery Laboratory, Department of Pharmacy, University of Napoli Federico II, I-80131 Napoli, Italy
| | - Salvatore Sortino
- PhotoChemLab, Department of Drug and Health Sciences, University of Catania, I-95125 Catania, Italy
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Brash DE, Goncalves LCP. Chemiexcitation: Mammalian Photochemistry in the Dark †. Photochem Photobiol 2023; 99:251-276. [PMID: 36681894 PMCID: PMC10065968 DOI: 10.1111/php.13781] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2022] [Accepted: 01/18/2023] [Indexed: 01/23/2023]
Abstract
Light is one way to excite an electron in biology. Another is chemiexcitation, birthing a reaction product in an electronically excited state rather than exciting from the ground state. Chemiexcited molecules, as in bioluminescence, can release more energy than ATP. Excited states also allow bond rearrangements forbidden in ground states. Molecules with low-lying unoccupied orbitals, abundant in biology, are particularly susceptible. In mammals, chemiexcitation was discovered to transfer energy from excited melanin, neurotransmitters, or hormones to DNA, creating the lethal and carcinogenic cyclobutane pyrimidine dimer. That process was initiated by nitric oxide and superoxide, radicals triggered by ultraviolet light or inflammation. Several poorly understood chronic diseases share two properties: inflammation generates those radicals across the tissue, and cells that die are those containing melanin or neuromelanin. Chemiexcitation may therefore be a pathogenic event in noise- and drug-induced deafness, Parkinson's disease, and Alzheimer's; it may prevent macular degeneration early in life but turn pathogenic later. Beneficial evolutionary selection for excitable biomolecules may thus have conferred an Achilles heel. This review of recent findings on chemiexcitation in mammalian cells also describes the underlying physics, biochemistry, and potential pathogenesis, with the goal of making this interdisciplinary phenomenon accessible to researchers within each field.
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Affiliation(s)
- Douglas E. Brash
- Department of Therapeutic Radiology, Yale School of Medicine, New Haven, CT 06520-8040, USA
- Yale Cancer Center, Yale School of Medicine, New Haven, CT 06520-8028, USA
| | - Leticia C. P. Goncalves
- Department of Therapeutic Radiology, Yale School of Medicine, New Haven, CT 06520-8040, USA
- Institut de Chimie de Nice CNRS UMR7272, Université Côte d’Azur, 28 Avenue Valrose 06108 Nice, France
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Biswas S, Shukla PK. A DFT study on the scavenging activity of curcumin toward methyl and ethyl radicals. MOLECULAR SIMULATION 2023. [DOI: 10.1080/08927022.2023.2178236] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/27/2023]
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Study of the Electrochemical Behavior of N-Substituted-4-Piperidones Curcumin Analogs: A Combined Experimental and Theoretical Approach. Int J Mol Sci 2022; 23:ijms232315043. [PMID: 36499370 PMCID: PMC9736124 DOI: 10.3390/ijms232315043] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2022] [Revised: 11/20/2022] [Accepted: 11/25/2022] [Indexed: 12/02/2022] Open
Abstract
The electrochemical behavior of N-methyl- and N-benzyl-4-piperidone curcumin analogs were studied experimentally and theoretically. The studied compounds present different substituents at the para position in the phenyl rings (-H, -Br, -Cl, -CF3, and -OCH3). We assessed their electrochemical behavior by differential pulse and cyclic voltammetry, while we employed density functional theory (DFT) M06 and M06-2x functionals along with 6-311+G(d,p) basis set calculations to study them theoretically. The results showed that compounds suffer a two-electron irreversible oxidation in the range of 0.72 to 0.86 V, with surface concentrations ranging from 1.72 × 10-7 to 5.01 × 10-7 mol/cm2. The results also suggested that the process is diffusion-controlled for all compounds. M06 DFT calculations showed a better performance than M06-2x to obtain oxidation potentials. We found a good correlation between the experimental and theoretical oxidation potential for N-benzyl-4-piperidones (R2 = 0.9846), while the correlation was poor for N-methyl-4-piperidones (R2 = 0.3786), suggesting that the latter suffer a more complex oxidation process. Calculations of the BDEs for labile C-H bonds in the compounds suggested that neither of the two series of compounds has a different tendency for a proton-coupled electron transfer (PCET) oxidation process. It is proposed that irreversible behavior is due to possible dimerization of the compounds by Shono-type oxidation.
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Photoeradication of aquatic pathogens by curcumin for clean and safe drinking water. J Photochem Photobiol A Chem 2022. [DOI: 10.1016/j.jphotochem.2022.114104] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022]
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Marinho MAG, Marques MDS, Cordeiro MF, de Moraes Vaz Batista Filgueira D, Horn AP. Combination of Curcumin and Photodynamic Therapy Based on the Use of Red Light or Near-Infrared Radiation in Cancer: a Systematic Review. Anticancer Agents Med Chem 2022; 22:2985-2997. [PMID: 35469576 DOI: 10.2174/1871520622666220425093657] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2021] [Revised: 01/13/2022] [Accepted: 02/18/2022] [Indexed: 11/22/2022]
Abstract
BACKGROUND Photodynamic therapy (PDT) is a therapeutic intervention that can be applied to the treatment of cancer. The interaction between a photosensitizer (PS), ideal wavelength radiation and tissue molecular oxygen, triggers a series of photochemical reactions that are responsible for the production of reactive oxygen species. These highly reactive species can decrease proliferation and induce tumor cell death. The search for PS of natural origin extracted from plants becomes relevant, as they have photoactivation capacity, preferentially targeting tumor cells and because they do not present any or little toxicity to healthy cells. OBJECTIVE Our work aimed to carry out a qualitative systematic review to investigate the effects of curcumin (CUR), a molecule considered as PS of natural origin, on PDT, using red light or near infrared radiation, in tumor models. METHODS A systematic search was performed in three databases (PubMed, Scopus, and Web of Science) using the PICOT method, retrieving a total of 1,373 occurrences. At the end of the peer screening, using inclusion, exclusion, and eligibility criteria, 25 eligible articles were included in this systematic review. RESULTS CUR, whether in its free state, associated with metal complexes or other PS, and in a nanocarrier system, was considered a relevant PS for PDT using red light or near-infrared against tumoral models in vitro and in vivo, acting by increasing cytotoxicity, inhibiting proliferation, inducing cell death mainly by apoptosis, and changing oxidative parameters. CONCLUSION The results found in this systematic review suggest the potential use of CUR as a PS of natural origin to be applied in PDT against many neoplasms, encouraging further search in the field of PDT against cancer and serving as an investigative basis for upcoming pre-clinical and clinical applications.
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Affiliation(s)
- Marcelo Augusto Germani Marinho
- Programa de Pós-Graduação em Ciências Fisiológicas, Instituto de Ciências Biológicas, Universidade Federal do Rio Grande-FURG, Rio Grande, RS, 96210-900, Brasil.,Laboratório de Neurociências, Instituto de Ciências Biológicas, Universidade Federal do Rio Grande-FURG, Rio Grande, RS, 96210-900, Brasil.,Laboratório de Cultura Celular, Instituto de Ciências Biológicas, Universidade Federal do Rio Grande-FURG, Rio Grande, RS, 96210-900, Brasil
| | - Magno da Silva Marques
- Programa de Pós-Graduação em Ciências Fisiológicas, Instituto de Ciências Biológicas, Universidade Federal do Rio Grande-FURG, Rio Grande, RS, 96210-900, Brasil.,Laboratório de Neurociências, Instituto de Ciências Biológicas, Universidade Federal do Rio Grande-FURG, Rio Grande, RS, 96210-900, Brasil
| | - Marcos Freitas Cordeiro
- Programa de Pós-Graduação em Biociências e Saúde, Universidade do Oeste de Santa Catarina-UNOESC, Joaçaba, SC, 89600-000, Brasil
| | - Daza de Moraes Vaz Batista Filgueira
- Programa de Pós-Graduação em Ciências Fisiológicas, Instituto de Ciências Biológicas, Universidade Federal do Rio Grande-FURG, Rio Grande, RS, 96210-900, Brasil.,Laboratório de Cultura Celular, Instituto de Ciências Biológicas, Universidade Federal do Rio Grande-FURG, Rio Grande, RS, 96210-900, Brasil
| | - Ana Paula Horn
- Programa de Pós-Graduação em Ciências Fisiológicas, Instituto de Ciências Biológicas, Universidade Federal do Rio Grande-FURG, Rio Grande, RS, 96210-900, Brasil.,Laboratório de Neurociências, Instituto de Ciências Biológicas, Universidade Federal do Rio Grande-FURG, Rio Grande, RS, 96210-900, Brasil
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Varzandeh M, Mohammadinejad R, Esmaeilzadeh-Salestani K, Dehshahri A, Zarrabi A, Aghaei-Afshar A. Photodynamic therapy for leishmaniasis: Recent advances and future trends. Photodiagnosis Photodyn Ther 2021; 36:102609. [PMID: 34728420 DOI: 10.1016/j.pdpdt.2021.102609] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2021] [Revised: 10/15/2021] [Accepted: 10/27/2021] [Indexed: 02/06/2023]
Abstract
Leishmaniasis has infected more than 12 million people worldwide. This neglected tropical disease, causing 20,000-30,000 deaths per year, is a global health problem. The emergence of resistant parasites and serious side effects of conventional therapies has led to the search for less toxic and non-invasive alternative treatments. Photodynamic therapy is a promising therapeutic strategy to produce reactive oxygen species for the treatment of leishmaniasis. In this regard, natural and synthetic photosensitizers such as curcumin, hypericin, 5-aminolevulinic acid, phthalocyanines, phenothiazines, porphyrins, chlorins and nanoparticles have been applied. In this review, the recent advances on using photodynamic therapy for treating Leishmania species have been reviewed.
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Affiliation(s)
- Mohammad Varzandeh
- Department of Materials Engineering, Isfahan University of Technology, Isfahan 84156-83111, Iran
| | - Reza Mohammadinejad
- Research Center of Tropical and Infectious Diseases, Kerman University of Medical Sciences, Kerman, Iran
| | - Keyvan Esmaeilzadeh-Salestani
- Chair of Crop Science and Plant Biology, Institute of Agricultural and Environmental Sciences, Estonian University of Life Sciences, Fr. R.Kreutzwaldi 1, EE51014 Tartu, Estonia
| | - Ali Dehshahri
- Pharmaceutical Sciences Research Center, School of Pharmacy, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Ali Zarrabi
- Department of Biomedical Engineering, Faculty of Engineering and Natural Sciences, Istinye University, 34485 Istanbul, Turkey
| | - Abbas Aghaei-Afshar
- Research Center of Tropical and Infectious Diseases, Kerman University of Medical Sciences, Kerman, Iran.
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8
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Nebbioso M, Franzone F, Greco A, Gharbiya M, Bonfiglio V, Polimeni A. Recent Advances and Disputes About Curcumin in Retinal Diseases. Clin Ophthalmol 2021; 15:2553-2571. [PMID: 34177257 PMCID: PMC8219301 DOI: 10.2147/opth.s306706] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2021] [Accepted: 05/12/2021] [Indexed: 01/05/2023] Open
Abstract
Curcumin belongs to the group of so-called phytocompounds, biologically active molecules produced by plants exerting a beneficial effect on health. Curcumin shows a wide spectrum of different properties, being an anti-inflammatory, antioxidant, antimicrobial and antimutagenic molecule. The purpose of the review is to examine what literature reported on the characteristics of curcumin, particularly, on the beneficial and controversial aspects of this molecule, aiming for a better therapeutic management of retinal diseases. The retina is a constant target of oxidative stress, this tissue being characterized by cells rich in mitochondria and by vessels and being, obviously, continuously reached from photons affecting its layers. Particularly, the retinal ganglion cells and the photoreceptors are extremely sensitive to oxidative stress damage and it is well known that an imbalance in reactive oxygen species is often involved in several retinal diseases, such as uveitis, age-related macular degeneration, diabetic retinopathy, central serous chorioretinopathy, macular edema, retinal ischemia-reperfusion injury, proliferative vitreoretinopathy, hereditary tapeto-retinal degenerations, and retinal and choroidal tumors. To date, several studies suggest that oral treatment with curcumin is generally well tolerated in humans and, in addition, it seems to have no negative effects: therefore, curcumin is a promising candidate as a retinal disease therapy. Unfortunately, the primary limitation of curcumin is represented by its poor bioavailability, in fact only a minimal fraction of this substance can reach the blood stream in the form of a biologically active compound. However, many steps have been made in several fields. In the future, it is expected that the strategies developed until now to allow curcumin to reach the target tissues in adequate concentrations could be ameliorated and, above all, large in vivo studies on humans are needed to demonstrate the total safety of these compounds and their effectiveness in different eye diseases.
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Affiliation(s)
- Marcella Nebbioso
- Department of Sense Organs, Sapienza University of Rome, Rome, 00185, Italy
| | - Federica Franzone
- Department of Sense Organs, Sapienza University of Rome, Rome, 00185, Italy
| | - Antonio Greco
- Department of Sense Organs, Sapienza University of Rome, Rome, 00185, Italy
| | - Magda Gharbiya
- Department of Sense Organs, Sapienza University of Rome, Rome, 00185, Italy
| | - Vincenza Bonfiglio
- Department of Experimental Biomedicine and Clinical Neuroscience, Ophthalmology Section, University of Palermo, Palermo, 90133, Italy
| | - Antonella Polimeni
- Department of Oral and Maxillofacial Sciences, Sapienza University of Rome, Rome, 00185, Italy
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9
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Tsaplev YB, Lapina VA, Trofimov AV. Fluorescence of curcumin in alkaline dimethyl sulfoxide and the effects of alkali metal cations on it. J Photochem Photobiol A Chem 2021. [DOI: 10.1016/j.jphotochem.2020.112967] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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10
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Versace DL, Moran G, Belqat M, Spangenberg A, Méallet-Renault R, Abbad-Andaloussi S, Brezová V, Malval JP. Highly Virulent Bactericidal Effects of Curcumin-Based μ-Cages Fabricated by Two-Photon Polymerization. ACS APPLIED MATERIALS & INTERFACES 2020; 12:5050-5057. [PMID: 31910616 DOI: 10.1021/acsami.9b18693] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
A new antibacterial strategy is reported based on two-photon fabrication of three-dimensional curcumin-embedded μ-cages. Such devices were designed to entrap and kill Staphylococcus aureus bacteria upon visible light irradiation. The proposed concept mainly relies on the pivotal role of curcumin, which is sequentially used as a two-photon active free radical initiator and as a photogenerator of reactive oxygen species within the cage μ-volumes. We show that these μ-cages exhibit extremely high antimicrobial properties, leading to 95% bacteria mortality after only 10 min visible irradiation. A preconcentration mechanism of photogenerated oxygen species is proposed to account for this highly performing bactericidal effect whose virulence can be strikingly switched on by increasing the light exposure time from 5 to 10 min.
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Affiliation(s)
- Davy-Louis Versace
- ICMPE , CNRS-UPEC UMR 7182, Université Paris-Est Créteil (UPEC) , 94320 Thiais , France
| | - Gabriela Moran
- ISMO , CNRS, Université Paris-Saclay, Univ. Paris-Sud , Building 520 , 91405 Orsay , France
| | - Mehdi Belqat
- IS2M , CNRS, Université Haute Alsace , 68057 Mulhouse , France
| | | | - Rachel Méallet-Renault
- ISMO , CNRS, Université Paris-Saclay, Univ. Paris-Sud , Building 520 , 91405 Orsay , France
| | - Samir Abbad-Andaloussi
- Laboratoire Eau, Environnement et Systèmes Urbains (LEESU) , UMR MA 102, Université Paris-Est Créteil (UPEC) , 61, avenue du general de Gaulle , 94320 Thiais , France
| | - Vlasta Brezová
- Institute of Physical Chemistry and Chemical Physics, Faculty of Chemical and Food Technology , Slovak University of Technology in Bratislava , SK-812 37 Bratislava , Slovak Republic
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Cozzolino M, Delcanale P, Montali C, Tognolini M, Giorgio C, Corrado M, Cavanna L, Bianchini P, Diaspro A, Abbruzzetti S, Viappiani C. Enhanced photosensitizing properties of protein bound curcumin. Life Sci 2019; 233:116710. [PMID: 31369762 DOI: 10.1016/j.lfs.2019.116710] [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: 06/13/2019] [Revised: 07/18/2019] [Accepted: 07/29/2019] [Indexed: 01/09/2023]
Abstract
AIMS The naturally occurring compound curcumin has been proposed for a number of pharmacological applications. In spite of the promising chemotherapeutic properties of the molecule, the use of curcumin has been largely limited by its chemical instability in water. In this work, we propose the use of water soluble proteins to overcome this issue in perspective applications to photodynamic therapy of tumors. MATERIALS AND METHODS Curcumin was bound to bovine serum albumin and its photophysical properties was studied as well as its effect on cell viability after light exposure through MTT assay and confocal imaging. KEY FINDINGS Bovine serum albumin binds curcumin with moderate affinity and solubilizes the hydrophobic compound preserving its photophysical properties for several hours. Cell viability assays demonstrate that when bound to serum albumin, curcumin is an effective photosensitizer for HeLa cells, with better performance than curcumin alone. Confocal fluorescence imaging reveals that when curcumin is delivered alone, it preferentially associates with mitochondria, whereas curcumin bound to bovine serum albumin is found in additional locations within the cell, a fact that may be related to the higher phototoxicity observed in this case. SIGNIFICANCE The higher bioavailability of the photosensitizing compound curcumin when bound to serum albumin may be exploited to increase the efficiency of the drug in photodynamic therapy of tumors.
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Affiliation(s)
- Marco Cozzolino
- Nanoscopy, Istituto Italiano di Tecnologia, via Morego 30, Genoa 16163, Italy; Nikon Imaging Center, Istituto Italiano di Tecnologia, via Morego 30, Genoa 16163, Italy; Department of Physics, University of Genoa, via Dodecaneso 33, Genoa 16146, Italy
| | - Pietro Delcanale
- Institute for Bioengineering of Catalonia (IBEC), the Barcelona Institute of Science and Technology (BIST), Barcelona, Spain
| | - Chiara Montali
- Dipartimento di Scienze Matematiche, Fisiche e Informatiche, Università di Parma, Parco area delle Scienze 7/A, 43124 Parma, Italy
| | - Massimiliano Tognolini
- Dipartimento di Scienze degli Alimenti e del Farmaco, Università di Parma, Parco area delle Scienze 27/A, 43124 Parma, Italy.
| | - Carmine Giorgio
- Dipartimento di Scienze degli Alimenti e del Farmaco, Università di Parma, Parco area delle Scienze 27/A, 43124 Parma, Italy
| | - Miriam Corrado
- Dipartimento di Scienze degli Alimenti e del Farmaco, Università di Parma, Parco area delle Scienze 27/A, 43124 Parma, Italy
| | - Luigi Cavanna
- Dipartimento di Oncologia-ematologia, Azienda USL di Piacenza, Via Taverna, 49, 29121 Piacenza, Italy
| | - Paolo Bianchini
- Nanoscopy, Istituto Italiano di Tecnologia, via Morego 30, Genoa 16163, Italy; Nikon Imaging Center, Istituto Italiano di Tecnologia, via Morego 30, Genoa 16163, Italy
| | - Alberto Diaspro
- Nanoscopy, Istituto Italiano di Tecnologia, via Morego 30, Genoa 16163, Italy; Nikon Imaging Center, Istituto Italiano di Tecnologia, via Morego 30, Genoa 16163, Italy; Department of Physics, University of Genoa, via Dodecaneso 33, Genoa 16146, Italy
| | - Stefania Abbruzzetti
- Dipartimento di Scienze Matematiche, Fisiche e Informatiche, Università di Parma, Parco area delle Scienze 7/A, 43124 Parma, Italy.
| | - Cristiano Viappiani
- Dipartimento di Scienze Matematiche, Fisiche e Informatiche, Università di Parma, Parco area delle Scienze 7/A, 43124 Parma, Italy
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Mishra S, Patel S, Halpani CG. Recent Updates in Curcumin Pyrazole and Isoxazole Derivatives: Synthesis and Biological Application. Chem Biodivers 2019; 16:e1800366. [PMID: 30460748 DOI: 10.1002/cbdv.201800366] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2018] [Accepted: 11/20/2018] [Indexed: 12/15/2022]
Abstract
Curcumin is an admired, plant-derived compound that has been extensively investigated for diverse range of biological activities, but the use of this polyphenol is limited due to its instability. Chemical modifications in curcumin are reported to seize this limitation; such efforts are intensively performed to discover molecules with similar but improved stability and better properties. Focal points of these reviews are synthesis of stable pyrazole and isoxazole analogs of curcumin and application in various biological systems. This review aims to emphasize the latest evidence of curcumin pyrazole analogs as a privileged scaffold in medicinal chemistry. Manifold features of curcumin pyrazole analogs will be summarized herein, including the synthesis of novel curcumin pyrazole analogs and the evaluation of their biological properties. This review is expected to be a complete, trustworthy and critical review of the curcumin pyrazole analogs template to the medicinal chemistry community.
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Affiliation(s)
- Satyendra Mishra
- Medicinal Chemistry Laboratory, Center for Engineering and Enterprise, University and Institute of Advanced Research, Koba Institutional, Area Gandhinagar, Gujarat, 382426, India
| | - Sejal Patel
- Medicinal Chemistry Laboratory, Center for Engineering and Enterprise, University and Institute of Advanced Research, Koba Institutional, Area Gandhinagar, Gujarat, 382426, India
| | - Chandni G Halpani
- Medicinal Chemistry Laboratory, Center for Engineering and Enterprise, University and Institute of Advanced Research, Koba Institutional, Area Gandhinagar, Gujarat, 382426, India
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Wang X, Gao Y. Effects of length and unsaturation of the alkyl chain on the hydrophobic binding of curcumin with Tween micelles. Food Chem 2018; 246:242-248. [DOI: 10.1016/j.foodchem.2017.11.024] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2017] [Revised: 10/23/2017] [Accepted: 11/07/2017] [Indexed: 10/18/2022]
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Shlar I, Droby S, Rodov V. Antimicrobial coatings on polyethylene terephthalate based on curcumin/cyclodextrin complex embedded in a multilayer polyelectrolyte architecture. Colloids Surf B Biointerfaces 2018; 164:379-387. [PMID: 29427944 DOI: 10.1016/j.colsurfb.2018.02.008] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2017] [Revised: 01/19/2018] [Accepted: 02/03/2018] [Indexed: 11/27/2022]
Abstract
Bacterial contamination is a growing concern worldwide. The aim of this work was to develop an antimicrobial coating based on curcumin-cyclodextrin inclusion complex and using polyethylene terephthalate (PET) film as a support matrix. After a pre-treatment aimed to provide sufficient electric charge to the PET surface, it was electrostatically coated with repeated multilayers comprising alternately deposited positively-charged poly-l-lysine (PLL) and negatively-charged poly-l-glutamic acid (PLGA) and carboxymethyl-β-cyclodextrin (CMBCD). The coatings had an architecture (PLL-PLGA)6-(PLL-PLGA-PLL-CMBCD)n, with the number of repeated multilayers n varying from 5 to 20. The CMBCD molecules were either covalently cross-linked using carbodiimide crosslinker chemistry or left unbound. The surface morphology, structure and elemental composition of the coatings were analysed by scanning electron microscopy and energy dispersive x-ray spectroscopy. To impart antimicrobial properties to the coatings they were loaded with a natural phenolic compound curcumin forming inclusion complexes with β-cyclodextrin. The non-cross-linked coatings showed bactericidal activity towards Escherichia coli in the dark, and this activity was further enhanced upon illumination with white light. Curcumin was released from the non-cross-linked coatings into an aqueous medium in the form of cyclodextrin inclusion complex. After the cross-linking, the coating lost its dark antimicrobial activity but retained the photodynamic properties. Stabilized cross-linked curcumin-loaded coatings can serve a basis for developing photoactivated antimicrobial surfaces controlling bacterial contamination and spread.
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Affiliation(s)
- Ilya Shlar
- Institute of Postharvest and Food Sciences, Agricultural Research Organization, The Volcani Center, Rishon LeZion 7528809, Israel; Institute of Biochemistry, Food Science and Nutrition, Hebrew University of Jerusalem, Rehovot 76100, Israel
| | - Samir Droby
- Institute of Postharvest and Food Sciences, Agricultural Research Organization, The Volcani Center, Rishon LeZion 7528809, Israel
| | - Victor Rodov
- Institute of Postharvest and Food Sciences, Agricultural Research Organization, The Volcani Center, Rishon LeZion 7528809, Israel.
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Shlar I, Droby S, Rodov V. Modes of antibacterial action of curcumin under dark and light conditions: A toxicoproteomics approach. J Proteomics 2017; 160:8-20. [PMID: 28315482 DOI: 10.1016/j.jprot.2017.03.008] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2016] [Revised: 02/01/2017] [Accepted: 03/12/2017] [Indexed: 12/20/2022]
Abstract
Curcumin is a potent natural food-grade antimicrobial compound. Exposure to light further enhances its antimicrobial capacity. Proteomic methods were used in this study for investigating the mechanistic aspects of the antibacterial curcumin effects in the dark and upon illumination. Escherichia coli cells exposed to water-dispersible curcumin-methyl-β-cyclodextrin inclusion complex under dark and light conditions were compared with the non-treated cells kept under the same illumination regimes. Curcumin treatment in the dark evoked adaptive responses aimed at mitigation of oxidative stress, DNA protection, proteostasis, modulation of redox state via changing NADH level, and gasotransmitter (H2S and NH3) biosynthesis. Although part of these phenomena were also present in E. coli treated under light, the light-induced curcumin toxicity was prevailed by maladaptive responses. The ROS burst induced upon curcumin treatment under light overrode the cellular adaptive mechanisms disrupting the iron metabolism, deregulating the iron-sulfur cluster biosynthesis and eventually leading to cell death. The toxicoproteomic findings were validated by transcriptomic analysis and by assessment of intracellular ROS, NADH, NADPH and iron levels. SIGNIFICANCE The results of this study elucidate putative mechanistic basis of antibacterial effects of curcumin, suggesting ways towards more efficient contamination control. In particular, the antimicrobial efficacy of curcumin can be potentiated by targeting bacterial systems that remediate its dark toxicity by free radical detoxification and modulation of cell redox status. To the best of the authors' knowledge, this is the first proteomic study differentiating between the dark and light-induced antimicrobial activity of curcumin.
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Affiliation(s)
- Ilya Shlar
- Institute of Postharvest and Food Sciences, Agricultural Research Organization, The Volcani Center, Rishon LeZion 7528809, Israel; Institute of Biochemistry, Food Science and Nutrition, Hebrew University of Jerusalem, Rehovot 76100, Israel
| | - Samir Droby
- Institute of Postharvest and Food Sciences, Agricultural Research Organization, The Volcani Center, Rishon LeZion 7528809, Israel
| | - Victor Rodov
- Institute of Postharvest and Food Sciences, Agricultural Research Organization, The Volcani Center, Rishon LeZion 7528809, Israel.
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16
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Yi B, Ka HJ, Kim MJ, Lee J. Effects of Curcumin on the Oxidative Stability of Oils Depending on Type of Matrix, Photosensitizers, and Temperature. J AM OIL CHEM SOC 2015. [DOI: 10.1007/s11746-015-2639-y] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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17
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Zhao J, Lalevée J, Lu H, MacQueen R, Kable SH, Schmidt TW, Stenzel MH, Xiao P. A new role of curcumin: as a multicolor photoinitiator for polymer fabrication under household UV to red LED bulbs. Polym Chem 2015. [DOI: 10.1039/c5py00661a] [Citation(s) in RCA: 72] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
Curcumin can act as a multicolor photoinitiator in free radical photopolymerization under air upon exposure to household LED bulbs.
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Affiliation(s)
- Jiacheng Zhao
- Center for Advanced Macromolecular Design
- School of Chemistry
- University of New South Wales
- Sydney
- Australia
| | - Jacques Lalevée
- Institut de Science des Matériaux de Mulhouse IS2M
- UMR CNRS 7361
- ENSCMu-UHA
- 68057 Mulhouse Cedex
- France
| | - Hongxu Lu
- Center for Advanced Macromolecular Design
- School of Chemistry
- University of New South Wales
- Sydney
- Australia
| | - Rowan MacQueen
- School of Chemistry
- University of New South Wales
- Sydney
- Australia
| | - Scott H. Kable
- School of Chemistry
- University of New South Wales
- Sydney
- Australia
| | | | - Martina H. Stenzel
- Center for Advanced Macromolecular Design
- School of Chemistry
- University of New South Wales
- Sydney
- Australia
| | - Pu Xiao
- Center for Advanced Macromolecular Design
- School of Chemistry
- University of New South Wales
- Sydney
- Australia
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18
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Jha NS, Mishra S, Jha SK, Surolia A. Antioxidant activity and electrochemical elucidation of the enigmatic redox behavior of curcumin and its structurally modified analogues. Electrochim Acta 2015. [DOI: 10.1016/j.electacta.2014.11.026] [Citation(s) in RCA: 62] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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19
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Shi S, Allonas X, Croutxé-Barghorn C, Chemtob A. Activation of the sol–gel process by visible light-emitting diodes (LEDs) for the synthesis of inorganic films. NEW J CHEM 2015. [DOI: 10.1039/c5nj00559k] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Photosensitized acid generation opens the possibility of using a visible LED light source for inorganic photo sol–gel process. It also provides a simple approach for sustainable synthesis of inorganic or hybrid materials under solar irradiance.
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Affiliation(s)
- Suqing Shi
- Laboratory of Macromolecular Photochemistry and Engineering
- University of Haute-Alsace
- 68093 Mulhouse Cedex
- France
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of Ministry of Education and College of Chemistry & Material Science
| | - Xavier Allonas
- Laboratory of Macromolecular Photochemistry and Engineering
- University of Haute-Alsace
- 68093 Mulhouse Cedex
- France
| | - Céline Croutxé-Barghorn
- Laboratory of Macromolecular Photochemistry and Engineering
- University of Haute-Alsace
- 68093 Mulhouse Cedex
- France
| | - Abraham Chemtob
- Laboratory of Macromolecular Photochemistry and Engineering
- University of Haute-Alsace
- 68093 Mulhouse Cedex
- France
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20
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Ghosh S, Kuchlyan J, Banik D, Kundu N, Roy A, Banerjee C, Sarkar N. Organic Additive, 5-Methylsalicylic Acid Induces Spontaneous Structural Transformation of Aqueous Pluronic Triblock Copolymer Solution: A Spectroscopic Investigation of Interaction of Curcumin with Pluronic Micellar and Vesicular Aggregates. J Phys Chem B 2014; 118:11437-48. [DOI: 10.1021/jp507378w] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Affiliation(s)
- Surajit Ghosh
- Department
of Chemistry, Indian Institute of Technology, Kharagpur 721302, WB, India
| | - Jagannath Kuchlyan
- Department
of Chemistry, Indian Institute of Technology, Kharagpur 721302, WB, India
| | - Debasis Banik
- Department
of Chemistry, Indian Institute of Technology, Kharagpur 721302, WB, India
| | - Niloy Kundu
- Department
of Chemistry, Indian Institute of Technology, Kharagpur 721302, WB, India
| | - Arpita Roy
- Department
of Chemistry, Indian Institute of Technology, Kharagpur 721302, WB, India
| | - Chiranjib Banerjee
- Department
of Chemistry, Indian Institute of Technology, Kharagpur 721302, WB, India
| | - Nilmoni Sarkar
- Department
of Chemistry, Indian Institute of Technology, Kharagpur 721302, WB, India
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21
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pH Dependence of reactive sites of curcumin possessing antioxidant activity and free radical scavenging ability studied using the electrochemical and ESR techniques: Polyaniline used as a source of the free radical. J Electroanal Chem (Lausanne) 2014. [DOI: 10.1016/j.jelechem.2013.11.026] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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22
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Heger M, van Golen RF, Broekgaarden M, Michel MC. The molecular basis for the pharmacokinetics and pharmacodynamics of curcumin and its metabolites in relation to cancer. Pharmacol Rev 2013; 66:222-307. [PMID: 24368738 DOI: 10.1124/pr.110.004044] [Citation(s) in RCA: 354] [Impact Index Per Article: 32.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
This review addresses the oncopharmacological properties of curcumin at the molecular level. First, the interactions between curcumin and its molecular targets are addressed on the basis of curcumin's distinct chemical properties, which include H-bond donating and accepting capacity of the β-dicarbonyl moiety and the phenylic hydroxyl groups, H-bond accepting capacity of the methoxy ethers, multivalent metal and nonmetal cation binding properties, high partition coefficient, rotamerization around multiple C-C bonds, and the ability to act as a Michael acceptor. Next, the in vitro chemical stability of curcumin is elaborated in the context of its susceptibility to photochemical and chemical modification and degradation (e.g., alkaline hydrolysis). Specific modification and degradatory pathways are provided, which mainly entail radical-based intermediates, and the in vitro catabolites are identified. The implications of curcumin's (photo)chemical instability are addressed in light of pharmaceutical curcumin preparations, the use of curcumin analogues, and implementation of nanoparticulate drug delivery systems. Furthermore, the pharmacokinetics of curcumin and its most important degradation products are detailed in light of curcumin's poor bioavailability. Particular emphasis is placed on xenobiotic phase I and II metabolism as well as excretion of curcumin in the intestines (first pass), the liver (second pass), and other organs in addition to the pharmacokinetics of curcumin metabolites and their systemic clearance. Lastly, a summary is provided of the clinical pharmacodynamics of curcumin followed by a detailed account of curcumin's direct molecular targets, whereby the phenotypical/biological changes induced in cancer cells upon completion of the curcumin-triggered signaling cascade(s) are addressed in the framework of the hallmarks of cancer. The direct molecular targets include the ErbB family of receptors, protein kinase C, enzymes involved in prostaglandin synthesis, vitamin D receptor, and DNA.
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Affiliation(s)
- Michal Heger
- Department of Experimental Surgery, Academic Medical Center, University of Amsterdam, Meibergdreef 9, 1105AZ Amsterdam, The Netherlands.
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23
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Qian T, Kun L, Gao B, Zhu R, Wu X, Wang S. Photo-ionization and photo-excitation of curcumin investigated by laser flash photolysis. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2013; 116:6-12. [PMID: 23896291 DOI: 10.1016/j.saa.2013.06.066] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/15/2013] [Revised: 06/14/2013] [Accepted: 06/19/2013] [Indexed: 06/02/2023]
Abstract
Curcumin (Cur) has putative antitumor properties. In the current study, we examined photophysical and photochemical properties of Cur using laser flash photolysis. The results demonstrated that Cur could be photo-ionized at 355 nm laser pulse to produce radical cation (Cur(+)) and solvated electron e(sol)(-) in 7:3 ethanol-water mixtures. The quantum yield of Cur photo-ionization and the ratio of photo-ionization to photo-excitation were also determined. Cur(+) could be transferred into neutral radical of Cur (Cur) via deprotonation with the pKa 4.13. The excited singlet of Cur ((1)Cur* could be transferred into excited triplet ((3)Cur*, which could be quenched by oxygen to produce singlet oxygen (1)O2*. Reaction of (3)Cur* with tryptophan was confirmed. The results encourage developing curcumin as a photosensitive antitumor agent.
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Affiliation(s)
- Tingting Qian
- School of Life Sciences and Technology, Tongji University, 1239 Siping Road, Shanghai 200092, PR China
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24
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Tátraaljai D, Kirschweng B, Kovács J, Földes E, Pukánszky B. Processing stabilisation of PE with a natural antioxidant, curcumin. Eur Polym J 2013. [DOI: 10.1016/j.eurpolymj.2013.02.018] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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25
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Barik A, Indira Priyadarsini K. Solvent dependent photophysical properties of dimethoxy curcumin. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2013; 105:267-272. [PMID: 23314392 DOI: 10.1016/j.saa.2012.12.036] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/08/2012] [Revised: 12/07/2012] [Accepted: 12/11/2012] [Indexed: 06/01/2023]
Abstract
Dimethoxy curcumin (DMC) is a methylated derivative of curcumin. In order to know the effect of ring substitution on photophysical properties of curcumin, steady state absorption and fluorescence spectra of DMC were recorded in organic solvents with different polarity and compared with those of curcumin. The absorption and fluorescence spectra of DMC, like curcumin, are strongly dependent on solvent polarity and the maxima of DMC showed red shift with increase in solvent polarity function (Δf), but the above effect is prominently observed in case of fluorescence maxima. From the dependence of Stokes' shift on solvent polarity function the difference between the excited state and ground state dipole moment was estimated as 4.9 D. Fluorescence quantum yield (φ(f)) and fluorescence lifetime (τ(f)) of DMC were also measured in different solvents at room temperature. The results indicated that with increasing solvent polarity, φ(f) increased linearly, which has been accounted for the decrease in non-radiative rate by intersystem crossing (ISC) processes.
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Affiliation(s)
- Atanu Barik
- Radiation and Photochemistry Division, Bhabha Atomic Research Center, Trombay, Mumbai 400 085, India.
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26
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Saini RK, Das K. Picosecond Spectral Relaxation of Curcumin Excited State in a Binary Solvent Mixture of Toluene and Methanol. J Phys Chem B 2012; 116:10357-63. [DOI: 10.1021/jp305447y] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Affiliation(s)
- R. K. Saini
- Laser Bio-Medical Applications & Instrumentation Division, Raja Ramanna Center for Advanced Technology, Indore, M.P., India
| | - K. Das
- Laser Bio-Medical Applications & Instrumentation Division, Raja Ramanna Center for Advanced Technology, Indore, M.P., India
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27
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Ghatak C, Rao VG, Mandal S, Ghosh S, Sarkar N. An Understanding of the Modulation of Photophysical Properties of Curcumin inside a Micelle Formed by an Ionic Liquid: A New Possibility of Tunable Drug Delivery System. J Phys Chem B 2012; 116:3369-79. [DOI: 10.1021/jp211242c] [Citation(s) in RCA: 75] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Chiranjib Ghatak
- Department of Chemistry, Indian Institute of Technology, Kharagpur 721302, WB, India
| | - Vishal Govind Rao
- Department of Chemistry, Indian Institute of Technology, Kharagpur 721302, WB, India
| | - Sarthak Mandal
- Department of Chemistry, Indian Institute of Technology, Kharagpur 721302, WB, India
| | - Surajit Ghosh
- Department of Chemistry, Indian Institute of Technology, Kharagpur 721302, WB, India
| | - Nilmoni Sarkar
- Department of Chemistry, Indian Institute of Technology, Kharagpur 721302, WB, India
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28
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Agnihotri N, Mishra PC. Scavenging mechanism of curcumin toward the hydroxyl radical: a theoretical study of reactions producing ferulic acid and vanillin. J Phys Chem A 2011; 115:14221-32. [PMID: 22035040 DOI: 10.1021/jp209318f] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
Curcumin is known to be an antioxidant, as it can scavenge free radicals from biological media. A sequence of H-abstraction and addition reactions involving up to eight OH radicals and curcumin or its degradation products leading to the formation of two other antioxidants, namely, ferulic acid and vanillin, was studied. Single electron transfer from curcumin to an OH radical was also studied. All relevant extrema on the potential energy surfaces were located by optimizing geometries of the reactant and product complexes, as well as those of the transition states, at the BHandHLYP/6-31G(d,p) level of density functional theory in the gas phase. Single-point energy calculations were also performed in the gas phase at the BHandHLYP/aug-cc-pVDZ and B3LYP/aug-cc-pVDZ levels of theory. Solvent effects in aqueous media were treated by performing single-point energy calculations at all of the above-mentioned levels of theory employing the polarizable continuum model and the geometries optimized at the BHandHLYP/6-31G(d,p) level in the gas phase. A few reaction steps were also studied by geometry optimization in aqueous media, and the thus-obtained Gibbs free energy barriers were similar to those obtained by corresponding single-point energy calculations. Our calculations show that the hydrogen atom of the OH group attached to the phenol moiety of curcumin would be most efficiently abstracted by an OH radical, in agreement with experimental observations. Further, our study shows that OH addition would be most favored at the C10 site of the heptadiene chain. It was found that curcumin can serve as an effective antioxidant.
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Affiliation(s)
- Neha Agnihotri
- Department of Physics, Banaras Hindu University, Varanasi, India
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29
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Abstract
Curcumin, the phytochemical agent in the spice turmeric, which gives Indian curry its yellow colour, is also a traditional Indian medicine. It has been used for millennia as a wound-healing agent and for treating a variety of ailments. The antioxidant, anti-inflammatory, antiproliferative and other properties of curcumin have only recently gained the attention of modern pharmacology. The mechanism of action of curcumin is complex and multifaceted. In part, curcumin acts by activating various cytoprotective proteins that are components of the phase II response. Over the past decade, research with curcumin has increased significantly. In vitro and in vivo studies have demonstrated that curcumin could target pathways involved in the pathophysiology of Alzheimer disease (AD), such as the β-amyloid cascade, tau phosphorylation, neuroinflammation or oxidative stress. These findings suggest that curcumin might be a promising compound for the development of AD therapy. However, its insolubility in water and poor bioavailability have limited clinical trials and its therapeutic applications. To be effective as a drug therapy, curcumin must be combined with other drugs, or new delivery strategies need to be developed.
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30
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Yang IS, Jin SM, Kang JH, Ramanathan V, Kim HM, Suh YD, Kim SK. Excited State Dynamics of Curcumin and Solvent Hydrogen Bonding. B KOREAN CHEM SOC 2011. [DOI: 10.5012/bkcs.2011.32.8.3090] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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31
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Adhikari S, Indira Priyadarsini K, Mukherjee T. Physico-chemical studies on the evaluation of the antioxidant activity of herbal extracts and active principles of some Indian medicinal plants. J Clin Biochem Nutr 2011; 40:174-83. [PMID: 18398494 PMCID: PMC2275762 DOI: 10.3164/jcbn.40.174] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2006] [Accepted: 12/12/2006] [Indexed: 01/01/2023] Open
Abstract
Understanding of the efficacy and mechanism for the reaction of the biologically important radicals with natural and/or synthetic antioxidants is the first step towards the development of future therapeutic agents. The kinetic parameters e.g., formation and decay rate constants predict the efficacy of an antioxidant and its fate after reaction. These parameters also dictate the ease with which competing reactions would occur in a bio-environment. The spectroscopic parameters provide the clue to the site of free radical attack to these antioxidants. Here, in this article an attempt has been made to show the use of physico-chemical methods in the evaluation of antioxidant activity of some important medicinal plants commonly used in India and the subcontinent. The systems chosen here for discussions are herbal extracts as such, curcumin from turmeric, methoxy phenols from Indian spices, dehydrogingerdione from ginger and bakuchiol from Psoralea corylifolia. All the examples shown in this article illustrate the potential of the pulse radiolysis coupled with kinetic spectroscopy and other physicochemical techniques for the study of antioxidants either in the form of mixture as in herbal extract or as an isolated compound.
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Affiliation(s)
- Soumyakanti Adhikari
- Radiation & Photochemistry Division, Chemistry group, Bhabha Atomic Research Centre, Mumbai 400 085, India
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32
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Nardo L, Andreoni A, Masson M, Haukvik T, Tønnesen HH. Studies on curcumin and curcuminoids. XXXIX. Photophysical properties of bisdemethoxycurcumin. J Fluoresc 2011; 21:627-35. [PMID: 20953820 PMCID: PMC3104010 DOI: 10.1007/s10895-010-0750-x] [Citation(s) in RCA: 44] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2010] [Accepted: 10/05/2010] [Indexed: 01/21/2023]
Abstract
The steady-state absorption and fluorescence, as well as the time-resolved fluorescence properties of bisdemethoxycurcumin dissolved in several solvents differing in polarity and H-bonding capability were measured. The photodegradation quantum yield of the compound in acetonitrile and methanol was determined. The bisdemethoxycurcumin decay mechanisms from the S(1) state were discussed and compared with those of curcumin. The differences in S(1) dynamics observed between bisdemethoxy-curcumin and curcumin could be ascribed to a difference in H-bond acceptor/donor properties of the phenolic OH and a difference in strength of the intramolecular H-bond in the keto-enol moiety within the two molecules.
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Affiliation(s)
- Luca Nardo
- Department of Physics and Mathematics, University of Insubria and C.N.I.S.M.-C.N.R., Via Valleggio, 11- 22100 Como, Italy
| | - Alessandra Andreoni
- Department of Physics and Mathematics, University of Insubria and C.N.I.S.M.-C.N.R., Via Valleggio, 11- 22100 Como, Italy
| | - Màr Masson
- Faculty of Pharmaceutical Sciences, School of Health Sciences, University of Iceland, Hagi, Hofsvallagata 53, IS-107 Reykjavik, Iceland
| | - Tone Haukvik
- School of Pharmacy, University of Oslo, P.O.Box 1068, Blindern, 0316 Oslo, Norway
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Kee TW, Adhikary R, Carlson PJ, Mukherjee P, Petrich JW. Femtosecond Fluorescence Upconversion Investigations on the Excited-State Photophysics of Curcumin. Aust J Chem 2011. [DOI: 10.1071/ch10417] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
The demonstration of curcumin as a photodynamic therapy agent has generated a high level of interest in understanding the photoinduced chemical and physical properties of this naturally occurring, yellow-orange medicinal compound. Important photophysical processes that may be related to photodynamic therapy effects including excited-state intramolecular hydrogen atom transfer (ESIHT) occur within the femtosecond to picosecond time scales. Femtosecond fluorescence upconversion spectroscopy has sufficient time resolution to resolve and investigate these important photophysical processes. In this review, recent advances in using femtosecond fluorescence upconversion to reveal ultrafast solvation and ESIHT of curcumin are presented. The excited-state photophysics of curcumin has been investigated in alcohols and micellar solutions. The results of curcumin in methanol and ethylene glycol reveal the presence of two decay components in the excited-state kinetics with time scales of 12–20 ps and ∼100 ps. Similarly, in a micellar solution, biphasic kinetics are present with the fast decay component having a time constant of 3–8 ps, the slow decay component 50–80 ps. Deuteration of curcumin in both media leads to a pronounced isotope effect in the slow decay component, which suggests that ESIHT is an important photophysical process on this time scale. The results of multiwavelength fluorescence upconversion studies show that the fast component in the excited-state kinetics is due to ultrafast solvation. These advances form a part of the continuing efforts to elucidate the photodynamic therapy properties of curcumin.
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Singh U, Barik A, Singh BG, Priyadarsini KI. Reactions of reactive oxygen species (ROS) with curcumin analogues: Structure-activity relationship. Free Radic Res 2010; 45:317-25. [PMID: 21034358 DOI: 10.3109/10715762.2010.532493] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
Three curcumin analogues viz., bisdemethoxy curcumin, monodemethoxy curcumin, and dimethoxycurcumin that differ at the phenolic substitution were synthesized. These compounds have been subjected for free radical reactions with DPPH radicals, superoxide radicals (O(2)(•-)), singlet oxygen ((1)O(2)) and peroxyl radicals (CCl(3)O(2)(•)) and the bimolecular rate constants were determined. The DPPH radical reactions were followed by stopped-flow spectrometer, (1)O(2) reactions by transient luminescence spectrometer, and CCl(3)O(2)(•) reactions using pulse radiolysis technique. The rate constants indicate that the presence of o-methoxy phenolic OH increases its reactivity with DPPH and CCl(3)O(2)(•), while for molecules lacking phenolic OH, this reaction is very sluggish. Reaction of O(2)(•-) and (1)O(2) with curcumin analogues takes place preferably at β-diketone moiety. The studies thus suggested that both phenolic OH and the β-diketone moiety of curcumin are involved in neutralizing the free radicals and their relative scavenging ability depends on the nature of the free radicals.
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Affiliation(s)
- Umang Singh
- Radiation and Photochemistry Division, Bhabha Atomic Research Center, Trombay, Mumbai-400085, India
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35
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Ghosh R, Mondal JA, Palit DK. Ultrafast Dynamics of the Excited States of Curcumin in Solution. J Phys Chem B 2010; 114:12129-43. [DOI: 10.1021/jp1038249] [Citation(s) in RCA: 75] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Affiliation(s)
- Rajib Ghosh
- Radiation & Photochemistry Division, Bhabha Atomic Research Centre, Trombay, Mumbai 400085, India
| | - Jahur A. Mondal
- Radiation & Photochemistry Division, Bhabha Atomic Research Centre, Trombay, Mumbai 400085, India
| | - Dipak K. Palit
- Radiation & Photochemistry Division, Bhabha Atomic Research Centre, Trombay, Mumbai 400085, India
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36
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Nardo L, Andreoni A, Bondani M, Másson M, Hjorth Tønnesen H. Studies on curcumin and curcuminoids. XXXIV. Photophysical properties of a symmetrical, non-substituted curcumin analogue. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY B-BIOLOGY 2009; 97:77-86. [DOI: 10.1016/j.jphotobiol.2009.08.004] [Citation(s) in RCA: 48] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/04/2008] [Revised: 04/08/2009] [Accepted: 08/11/2009] [Indexed: 12/16/2022]
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37
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Galano A, Álvarez-Diduk R, Ramírez-Silva MT, Alarcón-Ángeles G, Rojas-Hernández A. Role of the reacting free radicals on the antioxidant mechanism of curcumin. Chem Phys 2009. [DOI: 10.1016/j.chemphys.2009.07.003] [Citation(s) in RCA: 85] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
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Priyadarsini KI. Photophysics, photochemistry and photobiology of curcumin: Studies from organic solutions, bio-mimetics and living cells. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY C-PHOTOCHEMISTRY REVIEWS 2009. [DOI: 10.1016/j.jphotochemrev.2009.05.001] [Citation(s) in RCA: 292] [Impact Index Per Article: 19.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Adhikary R, Mukherjee P, Kee TW, Petrich JW. Excited-State Intramolecular Hydrogen Atom Transfer and Solvation Dynamics of the Medicinal Pigment Curcumin. J Phys Chem B 2009; 113:5255-61. [DOI: 10.1021/jp901234z] [Citation(s) in RCA: 87] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Affiliation(s)
- Ramkrishna Adhikary
- Department of Chemistry, Iowa State University, Ames, Iowa 50011-3111, and School of Chemistry and Physics, University of Adelaide, Adelaide, South Australia, 5005, Australia
| | - Prasun Mukherjee
- Department of Chemistry, Iowa State University, Ames, Iowa 50011-3111, and School of Chemistry and Physics, University of Adelaide, Adelaide, South Australia, 5005, Australia
| | - Tak W. Kee
- Department of Chemistry, Iowa State University, Ames, Iowa 50011-3111, and School of Chemistry and Physics, University of Adelaide, Adelaide, South Australia, 5005, Australia
| | - Jacob W. Petrich
- Department of Chemistry, Iowa State University, Ames, Iowa 50011-3111, and School of Chemistry and Physics, University of Adelaide, Adelaide, South Australia, 5005, Australia
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Benassi R, Ferrari E, Lazzari S, Spagnolo F, Saladini M. Theoretical study on Curcumin: A comparison of calculated spectroscopic properties with NMR, UV–vis and IR experimental data. J Mol Struct 2008. [DOI: 10.1016/j.molstruc.2008.05.024] [Citation(s) in RCA: 54] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Itokawa H, Shi Q, Akiyama T, Morris-Natschke SL, Lee KH. Recent advances in the investigation of curcuminoids. Chin Med 2008; 3:11. [PMID: 18798984 PMCID: PMC2576304 DOI: 10.1186/1749-8546-3-11] [Citation(s) in RCA: 114] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2008] [Accepted: 09/17/2008] [Indexed: 11/30/2022] Open
Abstract
More than 30 Curcuma species (Zingiberaceae) are found in Asia, where the rhizomes of these plants are used as both food and medicine, such as in traditional Chinese medicine. The plants are usually aromatic and carminative, and are used to treat indigestion, hepatitis, jaundice, diabetes, atherosclerosis and bacterial infections. Among the Curcuma species, C. longa, C. aromatica and C. xanthorrhiza are popular. The main constituents of Curcuma species are curcuminoids and bisabolane-type sesquiterpenes. Curcumin is the most important constituent among natural curcuminoids found in these plants. Published research has described the biological effects and chemistry of curcumin. Curcumin derivatives have been evaluated for bioactivity and structure-activity relationships (SAR). In this article, we review the literature between 1976 and mid-2008 on the anti-inflammatory, anti-oxidant, anti-HIV, chemopreventive and anti-prostate cancer effects of curcuminoids. Recent studies on curcuminoids, particularly on curcumin, have discovered not only much on the therapeutic activities, but also on mechanisms of molecular biological action and major genomic effects.
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Affiliation(s)
- Hideji Itokawa
- School of Pharmacy, University of North Carolina, Chapel Hill, North Carolina 27599-7360, USA.
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Shen L, Ji HF. Theoretical study on physicochemical properties of curcumin. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2007; 67:619-23. [PMID: 16979936 DOI: 10.1016/j.saa.2006.08.018] [Citation(s) in RCA: 133] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/16/2006] [Revised: 08/15/2006] [Accepted: 08/15/2006] [Indexed: 05/11/2023]
Abstract
Curcumin is a yellow-orange pigment, which has attracted considerable attention due to its wide spectrum of biological and pharmacological activities. In spite of much effort devoted on curcumin, there still exist some open questions concerning its fundamental physicochemical properties. The present study suggests that the DFT and TD-DFT calculations are useful to answer these questions. Firstly, the thermodynamic as well as spectral parameters support that curcumin exists predominantly in enol form in solution. Secondly, the calculated absorption spectra of curcumin anions provides direct evidence that the lowest pK(a) of curcumin corresponds to the dissociation of enolic proton, which not only reconciles the controversy on this topic, but also has important implications on the proton-transfer/dissociation-associated radical-scavenging mechanisms of curcumin.
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Affiliation(s)
- Liang Shen
- Shandong Provincial Research Center for Bioinformatic Engineering and Technique, Center for Advanced Study, Shandong University of Technology, Zibo 255049, PR China
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Barik A, Priyadarsini K, Mohan H. Photophysical Studies on Binding of Curcumin to Bovine Serum Albumin¶. Photochem Photobiol 2007. [DOI: 10.1562/0031-8655(2003)0770597psoboc2.0.co2] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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Khopde SM, Indira Priyadarsini K, Palit DK, Mukherjee T. Effect of Solvent on the Excited-state Photophysical Properties of Curcumin¶. Photochem Photobiol 2007. [DOI: 10.1562/0031-8655(2000)0720625eosote2.0.co2] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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Ortica F, Rodgers MAJ. A Laser Flash Photolysis Study of Curcumin in Dioxane-Water Mixtures¶. Photochem Photobiol 2007. [DOI: 10.1562/0031-8655(2001)0740745alfpso2.0.co2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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Lin L, Lee KH. Structure-Activity Relationships of Curcumin and Its Analogs with Different Biological Activities††Antitumor Agents 241. STUDIES IN NATURAL PRODUCTS CHEMISTRY 2006. [DOI: 10.1016/s1572-5995(06)80040-2] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
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A TD-DFT study on triplet excited-state properties of curcumin and its implications in elucidating the photosensitizing mechanisms of the pigment. Chem Phys Lett 2005. [DOI: 10.1016/j.cplett.2005.05.023] [Citation(s) in RCA: 73] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Dutta S, Padhye S, Priyadarsini KI, Newton C. Antioxidant and antiproliferative activity of curcumin semicarbazone. Bioorg Med Chem Lett 2005; 15:2738-44. [PMID: 15878268 DOI: 10.1016/j.bmcl.2005.04.001] [Citation(s) in RCA: 85] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2004] [Revised: 03/31/2005] [Accepted: 04/01/2005] [Indexed: 11/23/2022]
Abstract
A new semicarbazone derivative of curcumin (CRSC) was synthesized and examined for its antioxidant, antiproliferative, and antiradical activity and compared with those of curcumin (CR). The antioxidant activity was tested by their ability to inhibit radiation induced lipid peroxidation in rat liver microsomes. The antiproliferative activity was tested by studying the in vitro activity of CRSC against estrogen dependant breast cancer cell line MCF-7. Kinetics of reaction of (2,2'-diphenyl-1-picrylhydrazide) DPPH, a stable hydrogen abstracting free radical was studied to measure the antiradical activity using stopped-flow spectrophotometer. Finally one-electron oxidized radicals of CRSC were generated and characterized by pulse radiolysis. The results suggest that the probable site of attack for CRSC is both the phenolic OH and the imine carbonyl position. CRSC shows efficient antioxidant and antiproliferative activity although its antiradical activity is less than that of CR.
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Affiliation(s)
- Sabari Dutta
- Department of Chemistry, University of Pune, India.
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Ohara K, Mizukami W, Tokunaga A, Nagaoka SI, Uno H, Mukai K. Kinetic Study of the Mechanism of Free-Radical Scavenging Action in Curcumin: Effects of Solvent and pH. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 2005. [DOI: 10.1246/bcsj.78.615] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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Bruzell EM, Morisbak E, Tønnesen HH. Studies on curcumin and curcuminoids. XXIX. Photoinduced cytotoxicity of curcumin in selected aqueous preparations. Photochem Photobiol Sci 2005; 4:523-30. [PMID: 15986060 DOI: 10.1039/b503397g] [Citation(s) in RCA: 100] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Natural curcumin was evaluated as a potential photosensitizer for oral applications. The photocytotoxicity of curcumin on salivary gland acinar cells (SM 10-12) was investigated in five aqueous preparations consisting of 5% DMSO, non-ionic micelles, cyclodextrin, liposomes, or a hydrophilic polymer. The difference in phototoxic effects between natural curcumin and synthetic curcumin was examined. Cytotoxicity in SM 10-12 cells exposed to curcumin in the concentration range 0.4-13.5 microM was investigated by MTT test, a fluorescence-staining microscopic test, and by Western immunoblotting techniques. The potential formation of a photoreaction product, hydrogen peroxide, was evaluated by a fluorescence assay. The light source was a halogen lamp used in the dental clinic, emitting mainly in the blue part of the spectrum. The phototoxic effect on SM 10-12 cells was dependent on curcumin concentration, the light dose and the type of preparation. Natural and synthetic curcumin induced phototoxicity to the same extent. Significant effects on the cells were obtained at low curcumin concentrations (< or =0.5 microM) and at a low light dose (< or =6 J cm(-2)), after 3 h incubation. Neither the activation of caspases-3, -7, -8 or -9, nor the formation of hydrogen peroxide could be detected in cells exposed to curcumin and light. The liposome preparation was the most efficient vehicle for curcumin to induce cell death. The phototoxic effect induced by curcumin is highly dependent on the type of preparation. Curcumin might be a potential photosensitizer in the treatment of oral lesions and cancers provided careful selection of the vehicle.
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Affiliation(s)
- Ellen M Bruzell
- Scandinavian Institute of Dental Materials (NIOM), Haslum, Norway.
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