1
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Verdoliva V, Muzio G, Autelli R, Saviano M, Bedini E, De Luca S. Microwave-Assisted, Solid-State Procedure to Covalently Conjugate Hyaluronic Acid to Curcumin: Validation of a Green Synthetic Protocol. ACS POLYMERS AU 2024; 4:214-221. [PMID: 38882036 PMCID: PMC11177298 DOI: 10.1021/acspolymersau.3c00047] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/28/2023] [Revised: 01/23/2024] [Accepted: 01/24/2024] [Indexed: 06/18/2024]
Abstract
A microwave-assisted esterification reaction to prepare hyaluronan-curcumin derivatives by employing a solvent-free process was developed. In particular, a solid-state strategy to react two molecules characterized by totally different solubility profiles was developed. Hyaluronic acid, a highly hydrosoluble polysaccharide, was reacted with hydrophobic and even water-unstable curcumin. Microwave (MW) irradiation was employed to activate the reaction between the two solid compounds through the direct interaction with them and to preserve the integrity of the sensitive curcumin species. This new protocol can be considered efficient, fast, and also eco-friendly, avoiding the employment of toxic organic bases and solvents. A cytotoxicity test suggested that the developed hyaluronan-curcumin conjugate (HA-CUR) could be considered a candidate for its implementation as a new material. In addition, preliminary studies revealed promising anti-inflammatory activity and open future perspectives of further investigation.
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Affiliation(s)
- Valentina Verdoliva
- Institute of Biostructures and Bioimaging, National Research Council, 80131 Naples, Italy
| | - Giuliana Muzio
- Department of Clinical and Biological Sciences, University of Turin, 10125 Turin, Italy
| | - Riccardo Autelli
- Department of Clinical and Biological Sciences, University of Turin, 10125 Turin, Italy
| | - Michele Saviano
- Institute of Crystallography, National Research Council, 81100 Caserta, Italy
| | - Emiliano Bedini
- Department of Chemical Sciences, University of Naples Federico II, 80126 Naples, Italy
| | - Stefania De Luca
- Institute of Biostructures and Bioimaging, National Research Council, 80131 Naples, Italy
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2
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Aloi E, Tone CM, Barberi RC, Ciuchi F, Bartucci R. Effects of curcumin in the interaction with cardiolipin-containg lipid monolayers and bilayers. Biophys Chem 2023; 301:107082. [PMID: 37544082 DOI: 10.1016/j.bpc.2023.107082] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2023] [Revised: 07/21/2023] [Accepted: 07/30/2023] [Indexed: 08/08/2023]
Abstract
Curcumin, a plant polyphenol extracted from the Chinese herb turmeric, has gained widespread attention in recent years because of its multifunctional properties as antioxidant, antinflammatory, antimicrobial, and anticancer agent. Effects of the molecule on mitochondrial membranes properties have also been evidenced. In this work, the interaction of curcumin with models of mitochondrial membranes composed of dimyristoylphosphatidylcholine (DMPC) or mixtures of DMPC and 4 mol% tetramyristoylcardiolipin (TMCL) has been investigated by using biophysical techniques. Spectrophotometry and fluorescence allowed to determine the association constant and the binding energy of curcumin with pure DMPC and mixed DMPC/TMCL aqueous bilayers. The molecular organization of pure DMPC and cardiolipin-containing Langmuir monolayers at the air-water interface were investigated and the morphology of the monolayers transferred into mica substrates were characterized through atomic force microscopy (AFM). It is found that curcumin associates at the polar/apolar interface of the lipid bilayers and the binding is favored in the presence of cardiolipin. At 2 mol%, curcumin is well miscible with lipid monolayers, particularly with mixed DMPC/TMCL ones, where compact terraces formation characterized by a reduction of the surface roughness is observed in the AFM topographic images. At 10 mol%, curcumin perturbs the stability of DMPC monolayers and morphologically are evident terraces surrounded by cur aggregates. In the presence of TMCL, very few curcumin aggregates and larger compact terraces are observed. The overall results indicate that cardiolipin augments the incorporation of curcumin in model membranes highlighting the mutual interplay cardiolipin-curcumin in mitochondrial membranes.
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Affiliation(s)
- Erika Aloi
- Department of Physics, University of Calabria, 87036 Rende, Italy
| | - Caterina M Tone
- Department of Physics, University of Calabria, 87036 Rende, Italy; CNR Nanotec c/o Department of Physics, University of Calabria, 87036 Rende, Italy
| | - Riccardo C Barberi
- Department of Physics, University of Calabria, 87036 Rende, Italy; CNR Nanotec c/o Department of Physics, University of Calabria, 87036 Rende, Italy
| | - Federica Ciuchi
- CNR Nanotec c/o Department of Physics, University of Calabria, 87036 Rende, Italy.
| | - Rosa Bartucci
- Department of Chemistry and Chemical Technologies, University of Calabria, 87036 Rende, Italy.
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3
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Klopchevska J, Chadikovski A, Kavrakovski Z, Srbinoska M, Rafajlovska V. Evaluation of solvent efficiency for extraction of bioactive curcuminoids from turmeric (Curcuma longa L.). MAKEDONSKO FARMACEVTSKI BILTEN 2022. [DOI: 10.33320/maced.pharm.bull.2022.68.04.032] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023] Open
Affiliation(s)
- Jana Klopchevska
- Institute of Organic Technology, Faculty of Technology and Metallurgy, Ss. Cyril and Methodius University in Skopje, Rudjer Boskovic 16, 1000 Skopje, Republic of North Macedonia
| | - Aleksandar Chadikovski
- Institute of Organic Technology, Faculty of Technology and Metallurgy, Ss. Cyril and Methodius University in Skopje, Rudjer Boskovic 16, 1000 Skopje, Republic of North Macedonia
| | - Zoran Kavrakovski
- Institute of Applied Chemistry and Pharmaceutical Analysis, Faculty of Pharmacy, Mother Theresa 47, Ss. Cyril and Methodius University in Skopje 1000 Skopje, Republic of North Macedonia
| | - Marija Srbinoska
- Scientific Tobacco Institute-Prilep, University “St. Kliment Ohridski”-Bitola, Kicevska bb, 7500 Prilep, Republic of North Macedonia
| | - Vesna Rafajlovska
- Institute of Organic Technology, Faculty of Technology and Metallurgy, Ss. Cyril and Methodius University in Skopje, Rudjer Boskovic 16, 1000 Skopje, Republic of North Macedonia
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4
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Li K, Pi C, Wen J, He Y, Yuan J, Shen H, Zhao W, Zeng M, Song X, Lee RJ, Wei Y, Zhao L. Formulation of the novel structure curcumin derivative-loaded solid lipid nanoparticles: synthesis, optimization, characterization and anti-tumor activity screening in vitro. Drug Deliv 2022; 29:2044-2057. [PMID: 35775475 PMCID: PMC9255223 DOI: 10.1080/10717544.2022.2092235] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022] Open
Abstract
This study investigated the effect of structural modification of Curcumin (CU) combined with the solid lipid nanoparticles (SLN) drug delivery system on anti-tumor activity in vitro. A new structure of Curcumin derivative (CU1) was successfully synthesized by modifying the phenolic hydroxyl group of CU. CU1 was two times more stable than CU at 45 °C or constant light. The SLN containing CU1 (CU1-SLN) was prepared, and the particle size, polydispersity index, entrapment efficiency, drug loading, and zeta potential of CU1-SLN were (104.1 ± 2.43) nm, 0.22 ± 0.008, (95.1 ± 0.38) %, (4.28 ± 0.02) %, and (28.3 ± 1.60) mV, respectively. X-ray diffraction (XRD) and Differential scanning calorimetry (DSC) showed that CU1 is amorphous in SLN. CU1-SLN released the drug slowly for 48 h, while CU and CU1 were released rapidly within 8 h. In terms of cytotoxicity, CU1 exhibited a 1.5-fold higher inhibition than CU against A549 and SMMC-7721 cells, while CU1-SLN showed 2-fold higher inhibition than CU1. Both CU1 and CU1-SLN reduced the toxicity in normal hepatocytes compared with CU (2.6-fold and 12.9-fold, respectively). CU1-SLN showed a significant apoptotic effect (p < 0.05). In summary, CU1 retained the inhibitory effect of CU against tumor cells, while improving stability and safety. Additionally, CU1-SLN presents a promising strategy for the treatment of liver and lung cancer.
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Affiliation(s)
- Ke Li
- Key Laboratory of Medical Electrophysiology, Ministry of Education, School of Pharmacy of Southwest Medical University, Luzhou, China.,Luzhou Key Laboratory of Traditional Chinese Medicine for Chronic Diseases Jointly Built by Sichuan and Chongqing, The Affiliated Traditional Chinese Medicine Hospital of Southwest Medical University, Luzhou, Sichuan, P.R. China.,Central Nervous System Drug Key Laboratory of Sichuan Province, Southwest Medical University, Luzhou, Sichuan, P.R. China
| | - Chao Pi
- Key Laboratory of Medical Electrophysiology, Ministry of Education, School of Pharmacy of Southwest Medical University, Luzhou, China.,Luzhou Key Laboratory of Traditional Chinese Medicine for Chronic Diseases Jointly Built by Sichuan and Chongqing, The Affiliated Traditional Chinese Medicine Hospital of Southwest Medical University, Luzhou, Sichuan, P.R. China.,Central Nervous System Drug Key Laboratory of Sichuan Province, Southwest Medical University, Luzhou, Sichuan, P.R. China
| | - Jie Wen
- Key Laboratory of Medical Electrophysiology, Ministry of Education, School of Pharmacy of Southwest Medical University, Luzhou, China.,Luzhou Key Laboratory of Traditional Chinese Medicine for Chronic Diseases Jointly Built by Sichuan and Chongqing, The Affiliated Traditional Chinese Medicine Hospital of Southwest Medical University, Luzhou, Sichuan, P.R. China.,Central Nervous System Drug Key Laboratory of Sichuan Province, Southwest Medical University, Luzhou, Sichuan, P.R. China
| | - Yingmeng He
- Luzhou Key Laboratory of Traditional Chinese Medicine for Chronic Diseases Jointly Built by Sichuan and Chongqing, The Affiliated Traditional Chinese Medicine Hospital of Southwest Medical University, Luzhou, Sichuan, P.R. China.,Central Nervous System Drug Key Laboratory of Sichuan Province, Southwest Medical University, Luzhou, Sichuan, P.R. China
| | - Jiyuan Yuan
- Luzhou Key Laboratory of Traditional Chinese Medicine for Chronic Diseases Jointly Built by Sichuan and Chongqing, The Affiliated Traditional Chinese Medicine Hospital of Southwest Medical University, Luzhou, Sichuan, P.R. China.,Clinical Trial Center, The Affiliated Traditional Chinese Medicine Hospital of Southwest Medical University, Luzhou, Sichuan, P.R China
| | - Hongping Shen
- Luzhou Key Laboratory of Traditional Chinese Medicine for Chronic Diseases Jointly Built by Sichuan and Chongqing, The Affiliated Traditional Chinese Medicine Hospital of Southwest Medical University, Luzhou, Sichuan, P.R. China.,Clinical Trial Center, The Affiliated Traditional Chinese Medicine Hospital of Southwest Medical University, Luzhou, Sichuan, P.R China
| | - Wenmei Zhao
- Key Laboratory of Medical Electrophysiology, Ministry of Education, School of Pharmacy of Southwest Medical University, Luzhou, China.,Luzhou Key Laboratory of Traditional Chinese Medicine for Chronic Diseases Jointly Built by Sichuan and Chongqing, The Affiliated Traditional Chinese Medicine Hospital of Southwest Medical University, Luzhou, Sichuan, P.R. China.,Central Nervous System Drug Key Laboratory of Sichuan Province, Southwest Medical University, Luzhou, Sichuan, P.R. China
| | - Mingtang Zeng
- Key Laboratory of Medical Electrophysiology, Ministry of Education, School of Pharmacy of Southwest Medical University, Luzhou, China.,Luzhou Key Laboratory of Traditional Chinese Medicine for Chronic Diseases Jointly Built by Sichuan and Chongqing, The Affiliated Traditional Chinese Medicine Hospital of Southwest Medical University, Luzhou, Sichuan, P.R. China.,Central Nervous System Drug Key Laboratory of Sichuan Province, Southwest Medical University, Luzhou, Sichuan, P.R. China
| | - Xinjie Song
- School of Biological and Chemical Engineering, Zhejiang University of Science and Technology, Hangzhou, Zhejiang, China.,Department of Food Science and Technology, Yeungnam University, Gyeongsan-si, Gyeongsangbuk-do, Republic of Korea
| | - Robert J Lee
- Division of Pharmaceutics and Pharmacology, College of Pharmacy, The Ohio State University, Columbus, OH, USA
| | - Yumeng Wei
- Key Laboratory of Medical Electrophysiology, Ministry of Education, School of Pharmacy of Southwest Medical University, Luzhou, China.,Central Nervous System Drug Key Laboratory of Sichuan Province, Southwest Medical University, Luzhou, Sichuan, P.R. China
| | - Ling Zhao
- Luzhou Key Laboratory of Traditional Chinese Medicine for Chronic Diseases Jointly Built by Sichuan and Chongqing, The Affiliated Traditional Chinese Medicine Hospital of Southwest Medical University, Luzhou, Sichuan, P.R. China.,Central Nervous System Drug Key Laboratory of Sichuan Province, Southwest Medical University, Luzhou, Sichuan, P.R. China
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5
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Khan TK, You Y, Nelson TJ, Kundu S, Pramanik S, Das J. Modulation of proteasome activity by curcumin and didemethylcurcumin. J Biomol Struct Dyn 2022; 40:8332-8339. [PMID: 33876718 PMCID: PMC8827141 DOI: 10.1080/07391102.2021.1911853] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2020] [Accepted: 03/26/2021] [Indexed: 10/21/2022]
Abstract
Modulation of proteasome function by pharmacological interventions and molecular biology tools is an active area of research in cancer biology and neurodegenerative diseases. Curcumin (diferuloylmethane) is a naturally occurring polyphenol that affects multiple signaling pathways. Curcumin shows anti-inflammatory, antioxidant, anti-angiogenic, or anti-apoptotic properties. Recent research suggests that the therapeutic efficacy of curcumin may be due to its activity as a potent inhibitor of the proteasome. Using in vitro cell culture and molecular docking methods, here we show that both curcumin and its synthetic polyphenolic derivative (didemethylcurcumin, CUIII) modulated proteasome activity in a biphasic manner. Curcumin and CUIII increased proteasome activity at nanomolar concentrations, but inhibited proteasome activity at micromolar concentrations. Curcumin was more effective than CUIII in increasing relative proteasome activity at nanomolar concentrations. Also, curcumin was more effective than CUIII in inhibiting relative proteasome activity at micromolar concentrations. Docking simulations of curcumin and didemethylcurcumin binding to the 20S proteasome catalytic subunit estimated Kd values of 0.0054 µM and 1.3167 µM, respectively. These values correlate well with the results of the effectiveness of modulation by curcumin compared to CUIII. The small size of CUIII allows it to dock to the narrow cavity of the active site, but the binding interaction is not strong compared to curcumin. These results indicate that curcumin and its didemethyl derivative can be used to modulate proteasome activity and suggest that curcumin and its didemethyl derivative may be useful in treating two different disease classes: neurodegeneration and cancer.Communicated by Ramaswamy H. Sarma.
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Affiliation(s)
- Tapan K. Khan
- Center for Neurodegenerative Diseases, Blanchette Rockefeller Neurosciences Institute, West Virginia University, Morgantown, WV 26506, USA
- Department of Veterans Affairs, Rocky Mountain Mental Illness, Research, Education and Clinical Care, Denver, Aurora, CO 80045
| | - Youngki You
- Department of Pharmacological and Pharmaceutical Sciences, College of Pharmacy, University of Houston, Houston, TX 77204
| | - Thomas J. Nelson
- Center for Neurodegenerative Diseases, Blanchette Rockefeller Neurosciences Institute, West Virginia University, Morgantown, WV 26506, USA
- Department of Neurology, Marshall University School of Medicine, Huntington WV 25704
| | - Subrata Kundu
- Department of Chemistry, Indian Institute of Technology Delhi, New Delhi, Delhi 110016, India
| | - Saroj Pramanik
- Department of Biology, Morgan State University, Baltimore, MD 21251
| | - Joydip Das
- Department of Pharmacological and Pharmaceutical Sciences, College of Pharmacy, University of Houston, Houston, TX 77204
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6
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Interaction of curcumin with a winter flounder alpha-helical antifreeze protein. Biochem Biophys Res Commun 2022; 630:183-189. [PMID: 36166854 DOI: 10.1016/j.bbrc.2022.09.052] [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: 08/29/2022] [Accepted: 09/13/2022] [Indexed: 11/20/2022]
Abstract
The winter flounder, Pseudopleuronectes americanus, synthesizes a variety of alpha-helical antifreeze proteins (AFPs) that adhere to ice and inhibit its growth. The best studied of these is AFP6, which is a 37-residue protein abundant in the flounder blood plasma during winter. Curcumin from the turmeric plant (Curcuma longa) was found to interact with AFP6 in aqueous solutions, resulting in measurable changes in the curcumin, but not in the protein. Specifically, the secondary structure and unfolding of synthetic AFP6, shown by circular dichroism, appeared to be unaffected by curcumin. In contrast, the peak absorbance of curcumin shifted and increased in the presence of AFP6, and the maximum fluorescence emission was greater and blue shifted. These results also suggested the possibility of AFP6 detection by curcumin fluorescence. Synthetic AFP6 did not interact with Coomassie blue, silver or a commercial fluorescent stain following electrophoresis; however, the change in curcumin fluorescence upon binding to electrophoresed AFP6 resulted in a fluorescent signal, which was also detected upon interaction with purified natural AFP and flounder blood plasma containing the protein. Thus, aqueous curcumin can be used for the direct detection of AFP6 and curcumin binding could provide new avenues for the study of this protein.
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7
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Vanillin crosslinked chitosan films: The states of water and the effect of carriers on curcumin uptake. Carbohydr Polym 2022; 292:119725. [PMID: 35725193 DOI: 10.1016/j.carbpol.2022.119725] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2022] [Revised: 05/22/2022] [Accepted: 06/08/2022] [Indexed: 11/23/2022]
Abstract
In this work, chitosan chains were crosslinked with different contents of vanillin (Van), characterized and loaded with curcumin (CUR), a hydrophobic drug. Sodium dodecyl sulfate (SDS), Tween 20® (T20) and β-cyclodextrin (βCD) were used as curcumin carriers. Films prepared with Van 20 % yielded gel content of 70 %, swelling degree of ~23 gwater/g, bound water and capillary water, as revealed by Time-Domain Nuclear Magnetic Resonance measurements. Films prepared with higher Van contents showed small swelling degree (< 1.6 gwater/g) and hydrophobicity, making them inadequate for drug loading. UV-Vis and fluorescence spectroscopic studies indicated that Van 20 % combined with SDS and SDS/βCD presented the highest CUR uptake (~3.0 mg/g), favored by electrostatic interactions and hydrophobic interactions. CHI and Van 20 % films did not present any cytotoxicity in human neuroblastoma SH-SY5Y cells. At pH 1.0 the films were completely soluble, pointing to their potential application as gastric delivery systems for hydrophobic drugs. Chemical compounds studied in the manuscript: Chitosan, vanillin, curcumin, β-cyclodextrin, sodium dodecyl sulfate, polyethylene glycol sorbitan monolaurate.
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8
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Butnariu M, Quispe C, Koirala N, Khadka S, Salgado-Castillo CM, Akram M, Anum R, Yeskaliyeva B, Cruz-Martins N, Martorell M, Kumar M, Vasile Bagiu R, Abdull Razis AF, Sunusi U, Muhammad Kamal R, Sharifi-Rad J. Bioactive Effects of Curcumin in Human Immunodeficiency Virus Infection Along with the Most Effective Isolation Techniques and Type of Nanoformulations. Int J Nanomedicine 2022; 17:3619-3632. [PMID: 35996526 PMCID: PMC9391931 DOI: 10.2147/ijn.s364501] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2022] [Accepted: 06/07/2022] [Indexed: 11/30/2022] Open
Abstract
Human immunodeficiency virus (HIV) is one of the leading causes of death worldwide, with African countries being the worst affected by this deadly virus. Curcumin (CUR) is a Curcuma longa-derived polyphenol that has attracted the attention of researchers due to its antimicrobial, anti-inflammatory, antioxidant, immunomodulatory and antiviral effects. CUR also demonstrates anti-HIV effects by acting as a possible inhibitor of gp120 binding, integrase, protease, and topoisomerase II activities, besides also exerting a protective action against HIV-associated diseases. However, its effectiveness is limited due to its poor water solubility, rapid metabolism, and systemic elimination. Nanoformulations have been shown to be useful to enhance curcumin’s bioavailability and its effectiveness as an anti-HIV agent. In this sense, bioactive effects of CUR in HIV infection are carefully reviewed, along with the most effective isolation techniques and type of nanoformulations available.
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Affiliation(s)
- Monica Butnariu
- Chemistry & Biochemistry Discipline, University of Life Sciences "King Mihai I" from Timisoara, 300645, Calea Aradului 119, Timis, Romania
| | - Cristina Quispe
- Facultad de Ciencias de la Salud, Universidad Arturo Prat, Iquique, 1110939, Chile
| | - Niranjan Koirala
- Department of Natural Products Research, Dr. Koirala Research Institute for Biotechnology and Biodiversity, Kathmandu, 44600, Nepal.,Laboratory of Biotechnology, Faculty of Science and Technology, University of Macau, Macau SAR, 999078, People's Republic of China
| | - Sujan Khadka
- University of Chinese Academy of Sciences, Beijing, 100049, People's Republic of China.,State Key Laboratory of Environmental Aquatic Chemistry" with "State Key Laboratory of Environmental Aquatic Chemistry, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 100085, People's Republic of China
| | | | - Muhammad Akram
- Department of Eastern Medicine, Government College University Faisalabad, Faisalabad, Pakistan
| | - Rabia Anum
- SINA Health, Education and Welfare Trust, Karachi, Pakistan
| | - Balakyz Yeskaliyeva
- Faculty of Chemistry and Chemical Technology, Al-Farabi Kazakh National University, Almaty, Kazakhstan
| | - Natália Cruz-Martins
- Faculty of Medicine, University of Porto, Porto, Portugal.,Institute for Research and Innovation in Health (i3S), University of Porto, Porto, Portugal.,Institute of Research and Advanced Training in Health Sciences and Technologies (CESPU), Gandra PRD, 4585-116, Portugal.,TOXRUN-Oxicology Research Unit, University Institute of Health Sciences, CESPU, CRL, Gandra, 4585-116, Portugal
| | - Miquel Martorell
- Department of Nutrition and Dietetics, Faculty of Pharmacy, and Centre for Healthy Living, University of Concepción, Concepción, 4070386, Chile.,Universidad de Concepción, Unidad de Desarrollo Tecnológico, UDT, Concepción, 4070386, Chile
| | - Manoj Kumar
- Chemical and BioChemical Processing Division, ICAR - Central Institute for Research on Cotton Technology, Mumbai, 400019, India
| | - Radu Vasile Bagiu
- Victor Babes University of Medicine and Pharmacy of Timisoara Department of Microbiology, Timisoara, Romania.,Preventive Medicine Study Center, Timisoara, Romania
| | - Ahmad Faizal Abdull Razis
- Department of Food Science, Faculty of Food Science and Technology, Universiti Putra Malaysia, 43400 UPM Serdang, Selangor, Malaysia.,Natural Medicines and Products Research Laboratory, Institute of Bioscience, Universiti Putra Malaysia, 43400 UPM Serdang, Selangor, Malaysia
| | - Usman Sunusi
- Natural Medicines and Products Research Laboratory, Institute of Bioscience, Universiti Putra Malaysia, 43400 UPM Serdang, Selangor, Malaysia.,Department of Biochemistry, Bayero University Kano, Kano, Nigeria
| | - Ramla Muhammad Kamal
- Natural Medicines and Products Research Laboratory, Institute of Bioscience, Universiti Putra Malaysia, 43400 UPM Serdang, Selangor, Malaysia.,Department of Pharmacology, Federal University Dutse, Dutse, Jigawa State, Nigeria
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9
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Kennedy A, Griffin G, Freemont PS, Polizzi KM, Moore SJ. A curcumin direct protein biosensor for cell-free prototyping. ENGINEERING BIOLOGY 2022; 6:62-68. [PMID: 36969103 PMCID: PMC9996706 DOI: 10.1049/enb2.12024] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2022] [Revised: 08/10/2022] [Accepted: 08/12/2022] [Indexed: 11/19/2022] Open
Abstract
In synthetic biology, biosensors are routinely coupled with a gene expression system for detecting small molecules and physical signals. We reveal a fluorescent complex, based on the interaction of an Escherichia coli double bond reductase (EcCurA), as a detection unit with its substrate curcumin-we call this a direct protein (DiPro) biosensor. Using a cell-free synthetic biology approach, we use the EcCurA DiPro biosensor to fine tune 10 reaction parameters (cofactor, substrate, and enzyme levels) for cell-free curcumin biosynthesis, assisted through acoustic liquid handling robotics. Overall, we increase EcCurA-curcumin DiPro fluorescence within cell-free reactions by 78-fold. This finding adds to the growing family of protein-ligand complexes that are naturally fluorescent and potentially exploitable for a range of applications, including medical imaging to engineering high-value chemicals.
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Affiliation(s)
| | - Guy Griffin
- School of BiosciencesUniversity of KentCanterburyUK
| | - Paul S. Freemont
- Centre for Synthetic Biology and InnovationSouth Kensington CampusLondonUK
- Department of MedicineSouth Kensington CampusLondonUK
- Department of Infectious DiseaseSection of Structural and Synthetic BiologyImperial College LondonLondonUK
- Sir Alexander Fleming BuildingSouth Kensington CampusLondonUK
- UK Dementia Research Institute Care Research and Technology CentreImperial College LondonHammersmith CampusLondonUK
- UK Innovation and Knowledge Centre for Synthetic Biology (SynbiCITE) and the London BiofoundryImperial College Translation & Innovation HubLondonUK
| | - Karen M. Polizzi
- Centre for Synthetic Biology and InnovationSouth Kensington CampusLondonUK
- Department of Life SciencesImperial College LondonSouth Kensington CampusLondonUK
- Department of Chemical EngineeringImperial College LondonSouth Kensington CampusLondonUK
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10
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Usacheva T, Gamov G, Bychkova A, Anufrikov Y, Shasherina A, Alister D, Kuranova N, Sharnin V. Binding of quercetin and curcumin to human serum albumin in aqueous dimethyl sulfoxide and in aqueous ethanol. JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY 2022; 147:5511-5518. [PMID: 35283663 PMCID: PMC8897738 DOI: 10.1007/s10973-022-11216-8] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/10/2021] [Accepted: 01/14/2022] [Indexed: 06/14/2023]
Abstract
UNLABELLED The paper reports the spectrofluorimetric and calorimetric study of binding of two hydrophobic biologically active molecules with antioxidant ability, flavonoids quercetin, and curcumin, to human serum albumin (HSA) in water, aqueous DMSO (0.05 and 0.1 mol. fraction of DMSO), and aqueous ethanol (0.05 mol. fraction of EtOH). Both flavonoids induce the quenching of HSA fluorescence. The stability constants of associates, as well as the changes in enthalpy of the reaction between quercetin and protein, were evaluated. The influence of solvent composition and additions of hydroxypropyl-β-cyclodextrin as a solubilizer of hydrophobic molecules, on the association processes is discussed. SUPPLEMENTARY INFORMATION The online version contains supplementary material available at 10.1007/s10973-022-11216-8.
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Affiliation(s)
- Tatyana Usacheva
- Ivanovo State University of Chemistry and Technology, Ivanovo, Russia
| | - George Gamov
- Ivanovo State University of Chemistry and Technology, Ivanovo, Russia
| | - Anna Bychkova
- N.M. Emanuel Institute of Biochemical Physics, Russian Academy of Sciences, Moscow, Russia
| | - Yuriy Anufrikov
- Center for Thermogravimetric and Calorimetric Research, SPbSU Science Park, Saint Petersburg, Russia
| | - Anna Shasherina
- Center for Thermogravimetric and Calorimetric Research, SPbSU Science Park, Saint Petersburg, Russia
| | - Diana Alister
- Ivanovo State University of Chemistry and Technology, Ivanovo, Russia
| | - Natalya Kuranova
- Ivanovo State University of Chemistry and Technology, Ivanovo, Russia
| | - Valentin Sharnin
- Ivanovo State University of Chemistry and Technology, Ivanovo, Russia
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11
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Singh S, Barnes CA, D'Souza JS, Hosur RV, Mishra P. Curcumin, a potential initiator of apoptosis via direct interactions with Bcl-xL and Bid. Proteins 2021; 90:455-464. [PMID: 34528298 DOI: 10.1002/prot.26238] [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: 02/26/2021] [Revised: 08/18/2021] [Accepted: 09/07/2021] [Indexed: 11/07/2022]
Abstract
Apoptosis is a naturally occurring process during the growth and development of multicellular organisms and is increasingly active during times of cellular stress such as in response to intracellular DNA damage when removal of the host cell is paramount to prevent cancer. Unfortunately, once formed, cancer cells become impervious to apoptosis, creating a desperate need to identify an approach to induce apoptosis in these cells. An attractive option is to focus efforts on developing and locating compounds which activate apoptosis using natural compounds. Curcumin is a natural component in turmeric and is well-known for its pharmacological effects in preventing and combating many ailments and has been shown to decrease the rapid proliferation of a wide variety of tumor cells. However, to date, the apoptotic intermediates and interactions through which curcumin exerts its cytotoxic effects are unknown. Motivated by reports linking the intracellular modulation of the concentrations of Bid and Bcl-xL, following curcumin administration to cancer cells, we set out to probe for potential intermolecular interactions of these proteins with curcumin. Using several biophysical techniques, most notably, fluorescence, circular dichroism and nuclear magnetic resonance spectroscopy, we reveal binding interactions of curcumin with both Bcl-xLΔC and full-length Bid (Bid-FL) and prove that this binding is hydrophobically driven and localized to well-known functional regions of each protein. Specifically, our NMR studies show that while Bid-FL interacts with curcumin through its hydrophobic and pore forming helices (α6-α7), Bcl-xLΔC interacts with curcumin via its BH3 binding pocket (α2-α3-α4-α5), a critical region for mediating apoptosis.
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Affiliation(s)
- Suraj Singh
- Department of Biophysics, University of Mumbai, Santacruz (E), Mumbai, India
| | - C Ashley Barnes
- NIDDK, National Institute of Health, Bethesda, Maryland, USA
| | - Jacinta S D'Souza
- UM-DAE Centre for Excellence in Basic Sciences, Mumbai University Campus, Santacruz (E), Mumbai, India
| | - Ramakrishna V Hosur
- UM-DAE Centre for Excellence in Basic Sciences, Mumbai University Campus, Santacruz (E), Mumbai, India
| | - Pushpa Mishra
- Department of Biophysics, University of Mumbai, Santacruz (E), Mumbai, India
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12
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Gangarde Y, T. K. S, Panigrahi NR, Mishra RK, Saraogi I. Amphiphilic Small-Molecule Assemblies to Enhance the Solubility and Stability of Hydrophobic Drugs. ACS OMEGA 2020; 5:28375-28381. [PMID: 33163821 PMCID: PMC7643322 DOI: 10.1021/acsomega.0c04395] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/09/2020] [Accepted: 10/06/2020] [Indexed: 06/11/2023]
Abstract
Amphiphilic assemblies made from diverse synthetic building blocks are well known for their biomedical applications. Here, we report the synthesis of gemini-type amphiphilic molecules that form stable assemblies in water. The assembly property of molecule M2 in aqueous solutions was first inferred from peak broadening observed in the proton NMR spectrum. This was supported by dynamic light scattering and transmission electron microscopy analysis. The assembly formed from M2 (M2agg) was used to solubilize the hydrophobic drugs curcumin and doxorubicin at physiological pH. M2agg was able to effectively solubilize curcumin as well as protect it from degradation under UV irradiation. Upon solubilization in M2agg, curcumin showed excellent cell permeability and higher toxicity to cancer cells over normal cells, probably because of enhanced cellular uptake and increased stability. M2agg also showed pH-dependent release of doxorubicin, resulting in controlled toxicity on cancer cell lines, making it a promising candidate for the selective delivery of drugs to cancer cells.
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Affiliation(s)
- Yogesh
M. Gangarde
- Department
of Chemistry, Indian Institute of Science
Education and Research Bhopal, Bhopal Bypass Road, Bhauri, Bhopal 462066, Madhya
Pradesh, India
| | - Sajeev T. K.
- Department
of Biological Sciences, Indian Institute
of Science Education and Research Bhopal, Bhopal Bypass Road, Bhauri, Bhopal 462066, Madhya
Pradesh, India
| | - Nihar R. Panigrahi
- Department
of Chemistry, Indian Institute of Science
Education and Research Bhopal, Bhopal Bypass Road, Bhauri, Bhopal 462066, Madhya
Pradesh, India
| | - Ram K. Mishra
- Department
of Biological Sciences, Indian Institute
of Science Education and Research Bhopal, Bhopal Bypass Road, Bhauri, Bhopal 462066, Madhya
Pradesh, India
| | - Ishu Saraogi
- Department
of Chemistry, Indian Institute of Science
Education and Research Bhopal, Bhopal Bypass Road, Bhauri, Bhopal 462066, Madhya
Pradesh, India
- Department
of Biological Sciences, Indian Institute
of Science Education and Research Bhopal, Bhopal Bypass Road, Bhauri, Bhopal 462066, Madhya
Pradesh, India
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13
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Deka SJ, Trivedi V. Potentials of PKC in Cancer Progression and Anticancer Drug Development. Curr Drug Discov Technol 2020; 16:135-147. [PMID: 29468974 DOI: 10.2174/1570163815666180219113614] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2017] [Revised: 01/29/2018] [Accepted: 02/12/2018] [Indexed: 01/07/2023]
Abstract
PKC is a family of serine-threonine kinases which play crucial roles in the regulation of important signal transduction pathways in mammalian cell-biology. These enzymes are themselves regulated by various molecules that can serve as ligands to the regulatory domains and translocate PKC to membrane for activity. The role of PKC in the modulation of both proliferative and apoptotic signaling in cancer has become a subject of immense interest after it was discovered that PKC regulates a myriad of enzymes and transcription factors involved in carcinogenic signaling. Therefore, PKC has served as an attractive target for the development of newer generation of anti-cancer drugs. The following review discusses the potential of PKC to be regarded as a target for anti-cancer therapy. We also review all the molecules that have been discovered so far to be regulators/activators/inhibitors of PKC and also how far these molecules can be considered as potential candidates for anti-cancer drug development based on PKC.
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Affiliation(s)
- Suman J Deka
- Department of Biosciences and Bioengineering, Indian Institute of Technology-Guwahati, Guwahati-781039, Assam, India
| | - Vishal Trivedi
- Department of Biosciences and Bioengineering, Indian Institute of Technology-Guwahati, Guwahati-781039, Assam, India
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14
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Di Natale C, Onesto V, Lagreca E, Vecchione R, Netti PA. Tunable Release of Curcumin with an In Silico-Supported Approach from Mixtures of Highly Porous PLGA Microparticles. MATERIALS (BASEL, SWITZERLAND) 2020; 13:E1807. [PMID: 32290458 PMCID: PMC7215757 DOI: 10.3390/ma13081807] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/05/2020] [Revised: 04/03/2020] [Accepted: 04/09/2020] [Indexed: 12/13/2022]
Abstract
In recent years, drug delivery systems have become some of the main topics within the biomedical field. In this scenario, polymeric microparticles (MPs) are often used as carriers to improve drug stability and drug pharmacokinetics in agreement with this kind of treatment. To avoid a mere and time-consuming empirical approach for the optimization of the pharmacokinetics of an MP-based formulation, here, we propose a simple predictive in silico-supported approach. As an example, in this study, we report the ability to predict and tune the release of curcumin (CUR), used as a model drug, from a designed combination of different poly(d,l-lactide-co-glycolide) (PLGA) MPs kinds. In detail, all CUR-PLGA MPs were synthesized by double emulsion technique and their chemical-physical properties were characterized by Mastersizer and scanning electron microscopy (SEM). Moreover, for all the MPs, CUR encapsulation efficiency and kinetic release were investigated through the UV-vis spectroscopy. This approach, based on the combination of in silico and experimental methods, could be a promising platform in several biomedical applications such as vaccinations, cancer-treatment, diabetes therapy and so on.
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Affiliation(s)
- Concetta Di Natale
- Center for Advanced Biomaterials for Health Care (CABHC), IstitutoItaliano di Tecnologia, Largo Barsanti Matteucci 53, 80125 Napoli, Italy; (C.D.N.); (V.O.); (E.L.); (P.A.N.)
- Interdisciplinary Research Centre on Biomaterials (CRIB), University of Naples Federico II, P.leTecchio 80, 80125 Naples, Italy
| | - Valentina Onesto
- Center for Advanced Biomaterials for Health Care (CABHC), IstitutoItaliano di Tecnologia, Largo Barsanti Matteucci 53, 80125 Napoli, Italy; (C.D.N.); (V.O.); (E.L.); (P.A.N.)
| | - Elena Lagreca
- Center for Advanced Biomaterials for Health Care (CABHC), IstitutoItaliano di Tecnologia, Largo Barsanti Matteucci 53, 80125 Napoli, Italy; (C.D.N.); (V.O.); (E.L.); (P.A.N.)
- Department of Chemical Materials and Industrial Production (DICMAPI), University of Naples Federico II, P.leTecchio 80, 80125 Naples, Italy
| | - Raffaele Vecchione
- Center for Advanced Biomaterials for Health Care (CABHC), IstitutoItaliano di Tecnologia, Largo Barsanti Matteucci 53, 80125 Napoli, Italy; (C.D.N.); (V.O.); (E.L.); (P.A.N.)
| | - Paolo Antonio Netti
- Center for Advanced Biomaterials for Health Care (CABHC), IstitutoItaliano di Tecnologia, Largo Barsanti Matteucci 53, 80125 Napoli, Italy; (C.D.N.); (V.O.); (E.L.); (P.A.N.)
- Interdisciplinary Research Centre on Biomaterials (CRIB), University of Naples Federico II, P.leTecchio 80, 80125 Naples, Italy
- Department of Chemical Materials and Industrial Production (DICMAPI), University of Naples Federico II, P.leTecchio 80, 80125 Naples, Italy
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15
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Lian F, Wang Z, Zhou Z, Xu G. Identification, characterization, and comparison of n-alkanols and anesthetics binding to the C1b subdomain of protein kinase cα: similar function with different binding sites. J Recept Signal Transduct Res 2020; 40:109-116. [PMID: 32054382 DOI: 10.1080/10799893.2020.1726950] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
Protein kinase C (PKC) is a family of lipid-activated enzymes involved in anesthetic preconditioning signaling pathways. Previously, n-alkanols and general anesthetics have been found to activate PKC by binding to the kinase C1B subdomain. In the present study, we attempt to ascertain the molecular mechanism and interaction mode of human PKCα C1B subdomain with a variety of exogenous n-alkanols and volatile general anesthetics as well as endogenous activator phorbol ester (PE) and co-activator diacylglycerol (DG). Systematic bioinformatics analysis identifies three spatially vicinal sites on the subdomain surface to potentially accommodate small-molecule ligands, where the site 1 is a narrow, amphipathic pocket, the site 2 is a wide, flat and hydrophobic pocket, and the site 3 is a rugged, polar pocket. Further interaction modeling reveals that site 1 is the cognate binding region of natural PE activator, which can moderately simulate the kinase activity in an independent manner. The short-chain n-alkanols are speculated to also bind at the site to competitively inhibit PE-induced kinase activation. The long-chain n-alkanols and co-activator DG are found to target site 2 in a nonspecific manner, while the volatile anesthetics prefer to interact with site 3 in a specific manner. Since the site 1 is composed of two protein loops that are also shared by sites 2 and 3, binding of n-alkanols, DG and anesthetics to sites 2 and 3 can trigger a conformational displacement on the two loops, which enlarges the pocket size and changes the pocket configuration of site 1 through an allosteric mechanism, consequently enhancing kinase activation by improving PE affinity to the site.
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Affiliation(s)
- Fang Lian
- Department of Anesthesiology, the Second Affiliated Hospital of Nanchang University, Nanchang, China
| | - Zhong Wang
- Department of Anesthesiology, the Second Affiliated Hospital of Nanchang University, Nanchang, China
| | - Zhidong Zhou
- Department of Anesthesiology, the Second Affiliated Hospital of Nanchang University, Nanchang, China
| | - Guohai Xu
- Department of Anesthesiology, the Second Affiliated Hospital of Nanchang University, Nanchang, China
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16
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Xu C, Chen T, Li J, Jin M, Ye M. The structural analysis and its hepatoprotective activity of melanin isolated from Lachnum sp. Process Biochem 2020. [DOI: 10.1016/j.procbio.2019.08.022] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
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17
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Kong ZL, Sudirman S, Lin HJ, Chen WN. In vitro anti-inflammatory effects of curcumin on mast cell-mediated allergic responses via inhibiting FcεRI protein expression and protein kinase C delta translocation. Cytotechnology 2019; 72:81-95. [PMID: 31773429 DOI: 10.1007/s10616-019-00359-6] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2019] [Accepted: 11/23/2019] [Indexed: 12/18/2022] Open
Abstract
Allergy is a hypersensitivity reaction when exposed to certain environmental substances. It shows high relation between immunoglobulin E (IgE) binding to a specific receptor (FcεRI), pro-inflammatory cytokines, and mediators with allergic inflammation responses. Curcumin is a yellow pigment isolated from the turmeric. Curcumin possesses antioxidant and anti-inflammatory properties as well as exhibits significant chemopreventive activity. This study was aimed to investigate the in vitro assessment of the regulation of curcumin on allergic inflammatory responses on rat basophil leukemia (RBL)-2H3 and human pre-basophils (KU812) cell lines. Curcumin showed the activity against histamine and β-hexosaminidase releases from both IgE-mediated and A23187-induced cells degranulation. The morphological observation also confirmed that curcumin inhibits cells degranulation. IgE-mediated allergic responses and significantly induced mast cells intracellular reactive oxygen species (ROS) production. Curcumin reduced ROS production from IgE-mediated or A23187-induced cells degranulation. Curcumin also successfully reduced FcεRI expressions and some pro-inflammatory cytokines, such as interleukin (IL)-4 and IL-13. Furthermore, curcumin inhibited protein kinase C (PKC)-δ translocation from cytosolic to particulate. These results suggested that curcumin can alleviate both the IgE-mediated and calcium ionosphere A23187-stimulated allergic responses through reducing the release of the allergic mediators.
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Affiliation(s)
- Zwe-Ling Kong
- Department of Food Science, National Taiwan Ocean University, Keelung City, 202, Taiwan.
| | - Sabri Sudirman
- Department of Food Science, National Taiwan Ocean University, Keelung City, 202, Taiwan
| | - Huey-Jun Lin
- Department of Food Science, National Taiwan Ocean University, Keelung City, 202, Taiwan
| | - Wei-Ning Chen
- Department of Food Science, National Taiwan Ocean University, Keelung City, 202, Taiwan
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18
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Rodríguez Castaño P, Parween S, Pandey AV. Bioactivity of Curcumin on the Cytochrome P450 Enzymes of the Steroidogenic Pathway. Int J Mol Sci 2019; 20:ijms20184606. [PMID: 31533365 PMCID: PMC6770025 DOI: 10.3390/ijms20184606] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2019] [Revised: 09/11/2019] [Accepted: 09/16/2019] [Indexed: 11/16/2022] Open
Abstract
Turmeric, a popular ingredient in the cuisine of many Asian countries, comes from the roots of the Curcuma longa and is known for its use in Chinese and Ayurvedic medicine. Turmeric is rich in curcuminoids, including curcumin, demethoxycurcumin, and bisdemethoxycurcumin. Curcuminoids have potent wound healing, anti-inflammatory, and anti-carcinogenic activities. While curcuminoids have been studied for many years, not much is known about their effects on steroid metabolism. Since many anti-cancer drugs target enzymes from the steroidogenic pathway, we tested the effect of curcuminoids on cytochrome P450 CYP17A1, CYP21A2, and CYP19A1 enzyme activities. When using 10 µg/mL of curcuminoids, both the 17α-hydroxylase as well as 17,20 lyase activities of CYP17A1 were reduced significantly. On the other hand, only a mild reduction in CYP21A2 activity was observed. Furthermore, CYP19A1 activity was also reduced up to ~20% of control when using 1–100 µg/mL of curcuminoids in a dose-dependent manner. Molecular docking studies confirmed that curcumin could dock onto the active sites of CYP17A1, CYP19A1, as well as CYP21A2. In CYP17A1 and CYP19A1, curcumin docked within 2.5 Å of central heme while in CYP21A2 the distance from heme was 3.4 Å, which is still in the same range or lower than distances of bound steroid substrates. These studies suggest that curcuminoids may cause inhibition of steroid metabolism, especially at higher dosages. Also, the recent popularity of turmeric powder as a dilatory supplement needs further evaluation for the effect of curcuminoids on steroid metabolism. The molecular structure of curcuminoids could be modified to generate better lead compounds with inhibitory effects on CYP17A1 and CYP19A1 for potential drugs against prostate cancer and breast cancer.
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Affiliation(s)
- Patricia Rodríguez Castaño
- Pediatric Endocrinology, Diabetology, and Metabolism, University Children's Hospital Bern, 3010 Bern, Switzerland
- Department of Biomedical Research, University of Bern, 3010 Bern, Switzerland
| | - Shaheena Parween
- Pediatric Endocrinology, Diabetology, and Metabolism, University Children's Hospital Bern, 3010 Bern, Switzerland
- Department of Biomedical Research, University of Bern, 3010 Bern, Switzerland
| | - Amit V Pandey
- Pediatric Endocrinology, Diabetology, and Metabolism, University Children's Hospital Bern, 3010 Bern, Switzerland.
- Department of Biomedical Research, University of Bern, 3010 Bern, Switzerland.
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19
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Binding analysis between monomeric β-casein and hydrophobic bioactive compounds investigated by surface plasmon resonance and fluorescence spectroscopy. Food Chem 2019; 286:289-296. [DOI: 10.1016/j.foodchem.2019.01.176] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2018] [Revised: 01/12/2019] [Accepted: 01/28/2019] [Indexed: 11/18/2022]
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20
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Zembyla M, Murray BS, Radford SJ, Sarkar A. Water-in-oil Pickering emulsions stabilized by an interfacial complex of water-insoluble polyphenol crystals and protein. J Colloid Interface Sci 2019; 548:88-99. [DOI: 10.1016/j.jcis.2019.04.010] [Citation(s) in RCA: 61] [Impact Index Per Article: 12.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2018] [Revised: 03/13/2019] [Accepted: 04/03/2019] [Indexed: 11/29/2022]
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21
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Mehjabin R, Chen L, Huang R, Zhu D, Yang C, Li Y, Liao L, He L, Zhu Z, Wang Y. Expression and localization of grass carp pkc-θ (protein kinase C theta) gene after its activation. FISH & SHELLFISH IMMUNOLOGY 2019; 87:788-795. [PMID: 30716520 DOI: 10.1016/j.fsi.2019.01.057] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/25/2018] [Revised: 01/26/2019] [Accepted: 01/31/2019] [Indexed: 06/09/2023]
Abstract
Haemorrhagic disease caused by grass carp reovirus (GCRV) can result in large-scale death of young grass carp, leading to irreparable economic losses that seriously affect large-scale breeding. Protein kinase C (PKC, also known as PRKC) represents a family of serine/threonine protein kinases that includes multiple isozymes in many species. Among these, PKC-θ (PKC theta, also written as PRKCQ) is a novel isoform, mainly expressed in T cells, that is known to be involved in immune system function in mammals. To date, no research on immunological functions of fish Pkc-θ has been reported. To address this issue, we cloned the grass carp pkc-θ gene. Phylogenetic and syntenic analysis showed that this gene is the most evolutionarily conserved relative to zebrafish. Real-time quantitative PCR (RT-qPCR) indicated that pkc-θ was expressed at high levels in the gills and spleen of healthy grass carp. Infection with GCRV down regulated pkc-θ expression in the gills and spleen. Gene products that function upstream and downstream of pkc-θ were up regulated in the gill, but were down-regulated in the spleen. These results suggest that direct or indirect targeting of pkc-θ by GCRV may help the virus evade host immune defences in the spleen. Phorbol ester (PMA) treatment of Jurkat T cells induced translocation of grass carp Pkc-θ from the cytoplasm to the plasma membrane. This response to PMA suggests evolutionary conservation of an immune response function in fish Pkc-θ, as well as conservation of its sequence and structural domains. This study expanded our knowledge of the fish PKC gene family, and explored the role of pkc-θ in function of the grass carp immune system, providing new insights which may facilitate further studies of its biological functions.
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Affiliation(s)
- Rumana Mehjabin
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, 430072, China; University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Liangming Chen
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, 430072, China; University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Rong Huang
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, 430072, China.
| | - Denghui Zhu
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, 430072, China; University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Cheng Yang
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, 430072, China; University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Yongming Li
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, 430072, China
| | - Lanjie Liao
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, 430072, China
| | - Libo He
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, 430072, China
| | - Zuoyan Zhu
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, 430072, China
| | - Yaping Wang
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, 430072, China.
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22
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Kim BR, Park JY, Jeong HJ, Kwon HJ, Park SJ, Lee IC, Ryu YB, Lee WS. Design, synthesis, and evaluation of curcumin analogues as potential inhibitors of bacterial sialidase. J Enzyme Inhib Med Chem 2018; 33:1256-1265. [PMID: 30126306 PMCID: PMC6104608 DOI: 10.1080/14756366.2018.1488695] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2017] [Revised: 06/05/2018] [Accepted: 06/12/2018] [Indexed: 11/06/2022] Open
Abstract
Sialidases are key virulence factors that remove sialic acid from the host cell surface glycan, unmasking receptors that facilitate bacterial adherence and colonisation. In this study, we developed potential agents for treating bacterial infections caused by Streptococcus pneumoniae Nan A that inhibit bacterial sialidase using Turmeric and curcumin analogues. Design, synthesis, and structure analysis relationship (SAR) studies have been also described. Evaluation of the synthesised derivatives demonstrated that compound 5e was the most potent inhibitor of S. pneumoniae sialidase (IC50 = 0.2 ± 0.1 µM). This compound exhibited a 3.0-fold improvement in inhibitory activity over that of curcumin and displayed competitive inhibition. These results warrant further studies confirming the antipneumococcal activity 5e and indicated that curcumin derivatives could be potentially used to treat sepsis by bacterial infections.
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Affiliation(s)
- Bo Ram Kim
- Bio-processing Technology Development and Support Team, Korea Research Institute of Bioscience and Biotechnology, Jeongeup, Republic of Korea
| | - Ji-Young Park
- Natural Product Material Research Center, Korea Research Institute of Bioscience and Biotechnology, Jeongeup, Republic of Korea
| | - Hyung Jae Jeong
- Bio-processing Technology Development and Support Team, Korea Research Institute of Bioscience and Biotechnology, Jeongeup, Republic of Korea
| | - Hyung-Jun Kwon
- Natural Product Material Research Center, Korea Research Institute of Bioscience and Biotechnology, Jeongeup, Republic of Korea
| | - Su-Jin Park
- Natural Product Material Research Center, Korea Research Institute of Bioscience and Biotechnology, Jeongeup, Republic of Korea
| | - In-Chul Lee
- Natural Product Material Research Center, Korea Research Institute of Bioscience and Biotechnology, Jeongeup, Republic of Korea
| | - Young Bae Ryu
- Natural Product Material Research Center, Korea Research Institute of Bioscience and Biotechnology, Jeongeup, Republic of Korea
| | - Woo Song Lee
- Natural Product Material Research Center, Korea Research Institute of Bioscience and Biotechnology, Jeongeup, Republic of Korea
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23
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Raikwar MM, Rhyman L, Ramasami P, Sekar N. Theoretical Investigation of Difluoroboron Complex of Curcuminoid Derivatives with and without Phenyl Substituent (at Meso Position): Linear and Non-Linear Optical Study. ChemistrySelect 2018. [DOI: 10.1002/slct.201802231] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Affiliation(s)
- Manish M. Raikwar
- Dyestuff Technology Department; Institute of Chemical Technology Nathalal Parekh Marg; Matunga, Mumbai 400019 India
| | - Lydia Rhyman
- Department of Chemistry; Computational Chemistry Group; Faculty of Science University of Mauritius; Réduit 80837 Mauritius
- Department of Applied Chemistry; University of Johannesburg; Doornfontein Campus; Johannesburg 2028 South Africa
| | - Ponnadurai Ramasami
- Department of Chemistry; Computational Chemistry Group; Faculty of Science University of Mauritius; Réduit 80837 Mauritius
- Department of Applied Chemistry; University of Johannesburg; Doornfontein Campus; Johannesburg 2028 South Africa
| | - Nagaiyan Sekar
- Dyestuff Technology Department; Institute of Chemical Technology Nathalal Parekh Marg; Matunga, Mumbai 400019 India
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24
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Yang H, Du Z, Wang W, Song M, Sanidad K, Sukamtoh E, Zheng J, Tian L, Xiao H, Liu Z, Zhang G. Structure-Activity Relationship of Curcumin: Role of the Methoxy Group in Anti-inflammatory and Anticolitis Effects of Curcumin. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2017; 65:4509-4515. [PMID: 28513174 DOI: 10.1021/acs.jafc.7b01792] [Citation(s) in RCA: 57] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Curcumin, a dietary compound from turmeric, has beneficial effects on inflammatory diseases such as inflammatory bowel disease. Most previous studies have focused on the structure-activity relationship of the thiol-reactive α,β-unsaturated carbonyl groups of curcumin, so little is known about the roles of methoxy groups in biological activities of curcumin. Here we synthesized a series of curcumin analogues with different substitution groups (R = H-, Br-, Cl-, F-, NO2-, CH3-, and OH-) to replace the methoxy group and evaluated their biological effects in vitro and in vivo. Curcumin, Cur-OH, and Cur-Br (25 μM) suppressed 74.91 ± 0.88, 77.75 ± 0.89, and 71.75 ± 0.90% of LPS-induced NO production, respectively (P < 0.05). Similarly, these compounds also decreased iNOS expression, COX-2 expression, and NF-κB signaling in RAW 264.7 macrophage cells (P < 0.05). However, other analogues, especially Cur-NO2, were inactive (P > 0.05). In the dextran sulfate sodium (DSS)-induced colitis mouse model, the Cur-Br analogue also showed a beneficial effect the same as curcumin (P < 0.05), whereas the Cur-NO2 analogue had no effect in the animal model (P > 0.05). Together, the analogues have dramatically different effects on inflammation, supporting that the substitution group on the methoxy position plays an important role in the anti-inflammatory effects of curcumin. The methoxy group is a potential structural candidate for modification to design curcumin-based drugs for inflammatory diseases.
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Affiliation(s)
- Haixia Yang
- Department of Food Science, University of Massachusetts , Amherst, Massachusetts 01003, United States
- Department of Nutrition and Food Safety, College of Public Health, Xi'an Jiaotong University , Xi'an, Shaanxi, China 710061
| | - Zheyuan Du
- Department of Food Science, University of Massachusetts , Amherst, Massachusetts 01003, United States
| | - Weicang Wang
- Department of Food Science, University of Massachusetts , Amherst, Massachusetts 01003, United States
| | - Mingyue Song
- Department of Food Science, University of Massachusetts , Amherst, Massachusetts 01003, United States
| | - Katherine Sanidad
- Department of Food Science, University of Massachusetts , Amherst, Massachusetts 01003, United States
- Molecular and Cellular Biology Graduate Program, University of Massachusetts , Amherst, Massachusetts 01003, United States
| | - Elvira Sukamtoh
- Department of Food Science, University of Massachusetts , Amherst, Massachusetts 01003, United States
| | - Jennifer Zheng
- Department of Food Science, University of Massachusetts , Amherst, Massachusetts 01003, United States
| | - Li Tian
- Department of Food Science, University of Massachusetts , Amherst, Massachusetts 01003, United States
- Anyang Institute of Technology , Anyang, Henan, China 455000
| | - Hang Xiao
- Department of Food Science, University of Massachusetts , Amherst, Massachusetts 01003, United States
- Molecular and Cellular Biology Graduate Program, University of Massachusetts , Amherst, Massachusetts 01003, United States
| | - Zhenhua Liu
- Molecular and Cellular Biology Graduate Program, University of Massachusetts , Amherst, Massachusetts 01003, United States
- Department of Nutrition, University of Massachusetts , Amherst, Massachusetts 01003, United States
| | - Guodong Zhang
- Department of Food Science, University of Massachusetts , Amherst, Massachusetts 01003, United States
- Molecular and Cellular Biology Graduate Program, University of Massachusetts , Amherst, Massachusetts 01003, United States
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Gallic Acid Content in Taiwanese Teas at Different Degrees of Fermentation and Its Antioxidant Activity by Inhibiting PKCδ Activation: In Vitro and in Silico Studies. Molecules 2016; 21:molecules21101346. [PMID: 27754346 PMCID: PMC6273586 DOI: 10.3390/molecules21101346] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2016] [Revised: 09/28/2016] [Accepted: 10/06/2016] [Indexed: 12/16/2022] Open
Abstract
Teas can be classified according to their degree of fermentation, which has been reported to affect both the bioactive components in the teas and their antioxidative activity. In this study, four kinds of commercial Taiwanese tea at different degrees of fermentation, which include green (non-fermented), oolong (semi-fermented), black (fully fermented), and Pu-erh (post-fermented) tea, were profiled for catechin levels by using high performance liquid chromatography (HPLC). The result indicated that the gallic acid content in tea was directly proportional to the degree of fermentation in which the lowest and highest gallic acid content were 1.67 and 21.98 mg/g from green and Pu-erh tea, respectively. The antioxidative mechanism of the gallic acid was further determined by in vitro and in silico analyses. In vitro assays included the use of phorbol ester-induced macrophage RAW264.7 cell model for determining the inhibition of reactive oxygen species (ROS) production, and PKCδ and nicotinamide adenine dinucleotide phosphate (NADPH) oxidase subunit (p47) activations. The results showed that only at a concentration of 5.00 μM could gallic acid significantly (p < 0.05) reduce ROS levels in phorbol ester-activated macrophages. Moreover, protein immunoblotting expressed similar results in which activations of PKCδ and p47 were only significantly (p < 0.05) attenuated by 5.00 μM treatment. Lastly, in silico experiments further revealed that gallic acid could block PKCδ activation by occupying the phorbol ester binding sites of the protein.
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Gargoubi S, Tolouei R, Chevallier P, Levesque L, Ladhari N, Boudokhane C, Mantovani D. Enhancing the functionality of cotton fabric by physical and chemical pre-treatments: A comparative study. Carbohydr Polym 2016; 147:28-36. [DOI: 10.1016/j.carbpol.2016.03.084] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2016] [Revised: 03/12/2016] [Accepted: 03/26/2016] [Indexed: 11/27/2022]
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Das J, Ramani R, Suraju MO. Polyphenol compounds and PKC signaling. Biochim Biophys Acta Gen Subj 2016; 1860:2107-21. [PMID: 27369735 DOI: 10.1016/j.bbagen.2016.06.022] [Citation(s) in RCA: 67] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2016] [Revised: 06/01/2016] [Accepted: 06/26/2016] [Indexed: 12/17/2022]
Abstract
BACKGROUND Naturally occurring polyphenols found in food sources provide huge health benefits. Several polyphenolic compounds are implicated in the prevention of disease states, such as cancer. One of the mechanisms by which polyphenols exert their biological actions is by interfering in the protein kinase C (PKC) signaling pathways. PKC belongs to a superfamily of serine-threonine kinase and are primarily involved in phosphorylation of target proteins controlling activation and inhibition of many cellular processes directly or indirectly. SCOPE OF REVIEW Despite the availability of substantial literature data on polyphenols' regulation of PKC, no comprehensive review article is currently available on this subject. This article reviews PKC-polyphenol interactions and its relevance to various disease states. In particular, salient features of polyphenols, PKC, interactions of naturally occurring polyphenols with PKC, and future perspective of research on this subject are discussed. MAJOR CONCLUSIONS Some polyphenols exert their antioxidant properties by regulating the transcription of the antioxidant enzyme genes through PKC signaling. Regulation of PKC by polyphenols is isoform dependent. The activation or inhibition of PKC by polyphenols has been found to be dependent on the presence of membrane, Ca(2+) ion, cofactors, cell and tissue types etc. Two polyphenols, curcumin and resveratrol are in clinical trials for the treatment of colon cancer. GENERAL SIGNIFICANCE The fact that 74% of the cancer drugs are derived from natural sources, naturally occurring polyphenols or its simple analogs with improved bioavailability may have the potential to be cancer drugs in the future.
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Affiliation(s)
- Joydip Das
- Department of Pharmacological and Pharmaceutical Sciences, College of Pharmacy, University of Houston, Houston, TX 77204, United States.
| | - Rashmi Ramani
- Department of Pharmacological and Pharmaceutical Sciences, College of Pharmacy, University of Houston, Houston, TX 77204, United States
| | - M Olufemi Suraju
- Department of Pharmacological and Pharmaceutical Sciences, College of Pharmacy, University of Houston, Houston, TX 77204, United States
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Pany S, Majhi A, Das J. Selective Modulation of Protein Kinase C α over Protein Kinase C ε by Curcumin and Its Derivatives in CHO-K1 Cells. Biochemistry 2016; 55:2135-43. [PMID: 26983836 DOI: 10.1021/acs.biochem.6b00057] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Members of the protein kinase C (PKC) family of serine/threonine kinases regulate various cellular functions, including cell growth, differentiation, metabolism, and apoptosis. Modulation of isoform-selective activity of PKC by curcumin (1), the active constituent of Curcuma L., is poorly understood, and the literature data are inconsistent and obscure. The effect of curcumin (1) and its analogues, 4-[(2Z,6E)-3-hydroxy-7-(4-hydroxy-3-methoxyphenyl)-5-oxohepta-2,6-dien-1-yl]-2-methoxyphenyl oleate (2), (9Z,12Z)-4-[(2Z,6E)-3-hydroxy-7-(4-hydroxy-3-methoxyphenyl)-5-oxohepta-2,6-dien-1-yl]-2-methoxyphenyl octadeca-9,12-dienoate (3), (9Z,12Z,15Z)-4-[(2Z,6E)-3-hydroxy-7-(4-hydroxy-3-methoxyphenyl)-5-oxohepta-2,6-dien-1-yl]-2-methoxyphenyl octadeca-9,12,15-trienoate (4), and (1E,6E)-1-[4-(hexadecyloxy)-3-methoxyphenyl]-7-(4-hydroxy-3-methoxyphenyl)hepta-1,6-diene-3,5-dione (5), and didemethylcurcumin (6) on the membrane translocation of PKCα, a conventional PKC, and PKCε, a novel PKC, has been studied in CHO-K1 cells, in which these PKC isoforms are endogenously expressed. Translocation of PKC from the cytosol to the membrane was measured using immunoblotting and confocal microscopy. 1 and 6 inhibited the TPA-induced membrane translocation of PKCα but not of PKCε. Modification of the hydroxyl group of curcumin with a long aliphatic chain containing unsaturated double bonds in 2-4 completely abolished this inhibition property. Instead, 2-4 showed significant translocation of PKCα but not of PKCε to the membrane. No membrane translocation was observed with 1, 6, or the analogue 5 having a saturated long chain for either PKCα or PKCε. 1 and 6 inhibited TPA-induced activation of ERK1/2, and 2-4 activated it. ERK1/2 is the downstream readout of PKC. These results show that the hydroxyl group of curcumin is important for PKC activity and the curcumin template can be useful in developing isoform specific PKC modulators for regulating a particular disease state.
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Affiliation(s)
- Satyabrata Pany
- Department of Pharmacological and Pharmaceutical Sciences, College of Pharmacy, University of Houston , Houston, Texas 77204, United States
| | - Anjoy Majhi
- Department of Pharmacological and Pharmaceutical Sciences, College of Pharmacy, University of Houston , Houston, Texas 77204, United States
| | - Joydip Das
- Department of Pharmacological and Pharmaceutical Sciences, College of Pharmacy, University of Houston , Houston, Texas 77204, United States
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29
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Margar SN, Sekar N. Nonlinear optical properties of curcumin: solvatochromism-based approach and computational study. Mol Phys 2016. [DOI: 10.1080/00268976.2016.1161248] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
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Maity S, Pal S, Sardar S, Sepay N, Parvej H, Chakraborty J, Chandra Halder U. Multispectroscopic analysis and molecular modeling to investigate the binding of beta lactoglobulin with curcumin derivatives. RSC Adv 2016. [DOI: 10.1039/c6ra24275h] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023] Open
Abstract
Bovine beta lactoglobulin (β-lg), the major whey protein, has a great affinity for a wide range of organic compounds like fatty acids, retinoletc.
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Affiliation(s)
- Sanhita Maity
- Organic Chemistry Section
- Department of Chemistry
- Jadavpur University
- Kolkata 700032
- India
| | - Sampa Pal
- Organic Chemistry Section
- Department of Chemistry
- Jadavpur University
- Kolkata 700032
- India
| | - Subrata Sardar
- Organic Chemistry Section
- Department of Chemistry
- Jadavpur University
- Kolkata 700032
- India
| | - Nayim Sepay
- Organic Chemistry Section
- Department of Chemistry
- Jadavpur University
- Kolkata 700032
- India
| | - Hasan Parvej
- Organic Chemistry Section
- Department of Chemistry
- Jadavpur University
- Kolkata 700032
- India
| | - Jishnu Chakraborty
- Organic Chemistry Section
- Department of Chemistry
- Jadavpur University
- Kolkata 700032
- India
| | - Umesh Chandra Halder
- Organic Chemistry Section
- Department of Chemistry
- Jadavpur University
- Kolkata 700032
- India
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Curcumin inhibits development and cell adhesion in Dictyostelium discoideum: Implications for YakA signaling and GST enzyme function. Biochem Biophys Res Commun 2015; 467:275-81. [PMID: 26449461 DOI: 10.1016/j.bbrc.2015.09.175] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2015] [Accepted: 09/30/2015] [Indexed: 11/22/2022]
Abstract
The molecular basis for nutraceutical properties of the polyphenol curcumin (Curcuma longa, Turmeric) is complex, affecting multiple factors that regulate cell signaling and homeostasis. Here, we report the effect of curcumin on cellular and developmental mechanisms in the eukaryotic model, Dictyostelium discoideum. Dictyostelium proliferation was inhibited in the presence of curcumin, which also suppressed the prestarvation marker, discoidin I, members of the yakA-mediated developmental signaling pathway, and expression of the extracellular matrix/cell adhesion proteins (DdCAD and csA). This resulted in delayed chemotaxis, adhesion, and development of the organism. In contrast to the inhibitory effects on developmental genes, curcumin induced gstA gene expression, overall GST activity, and generated production of reactive oxygen species. These studies expand our knowledge of developmental and biochemical signaling influenced by curcumin, and lends greater consideration of GST enzyme function in eukaryotic cell signaling, development, and differentiation.
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32
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Prasad S, Tyagi AK. Curcumin and its analogues: a potential natural compound against HIV infection and AIDS. Food Funct 2015; 6:3412-9. [PMID: 26404185 DOI: 10.1039/c5fo00485c] [Citation(s) in RCA: 63] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
No safe and effective cure currently exists for human immunodeficiency virus (HIV). However, antiretroviral therapy can prolong the lives of HIV patients and lowers the secondary infections. Natural compounds, which are considered to be pleiotropic molecules, could be useful against HIV. Curcumin, a yellow pigment present in the spice turmeric (Curcuma longa), can be used for the treatment of several diseases including HIV-AIDS because of its antioxidant, anti-inflammatory, anticancer, antiviral, and antibacterial nature. In this review we have summarized that how curcumin and its analogues inhibit the infection and replication of viral genes and prevent multiplicity of HIV. They are inhibitors of HIV protease and integrase. Curcumin also inhibits Tat transactivation of the HIV1-LTR genome, inflammatory molecules (interleukins, TNF-α, NF-κB, COX-2) and HIV associated various kinases including tyrosine kinase, PAK1, MAPK, PKC, cdk and others. In addition, curcumin enhances the effect of conventional therapeutic drugs and minimizes their side effects.
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Affiliation(s)
- Sahdeo Prasad
- Cytokine Research Laboratory, Department of Experimental Therapeutics, The University of Texas MD Anderson Cancer Center, Houston, Texas, USA
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Kongpichitchoke T, Hsu JL, Huang TC. Number of Hydroxyl Groups on the B-Ring of Flavonoids Affects Their Antioxidant Activity and Interaction with Phorbol Ester Binding Site of PKCδ C1B Domain: In Vitro and in Silico Studies. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2015; 63:4580-6. [PMID: 25907027 DOI: 10.1021/acs.jafc.5b00312] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/20/2023]
Abstract
Although flavonoids have been reported for their benefits and nutraceutical potential use, the importance of their structure on their beneficial effects, especially on signal transduction mechanisms, has not been well clarified. In this study, three flavonoids, pinocembrin, naringenin, and eriodictyol, were chosen to determine the effect of hydroxyl groups on the B-ring of flavonoid structure on their antioxidant activity. In vitro assays, including DPPH scavenging activity, ROS quantification by flow cytometer, and proteins immunoblotting, and in silico analysis by molecular docking between the flavonoids and C1B domain of PKCδ phorbol ester binding site were both used to complete this study. Eriodictyol (10 μM), containing two hydroxyl groups on the B-ring, exhibited significantly higher (p < 0.05) antioxidant activity than pinocembrin and naringenin. The IC50 values of eriodictyol, naringenin, and pinocembrin were 17.4 ± 0.40, 30.2 ± 0.61, and 44.9 ± 0.57 μM, respectively. In addition, eriodictyol at 10 μM remarkably inhibited the phosphorylation of PKCδ at 63.4% compared with PMA-activated RAW264.7, whereas pinocembrin and naringenin performed inhibition activity at 76.8 and 72.6%, respectively. According to the molecular docking analysis, pinocembrin, naringenin, and eriodictyol showed -CDOCKER_energy values of 15.22, 16.95, and 21.49, respectively, reflecting that eriodictyol could bind with the binding site better than the other two flavonoids. Interestingly, eriodictyol had a remarkably different pose to bind with the kinase as a result of the two hydroxyl groups on its B-ring, which consequently contributed to greater antioxidant activity over pinocembrin and naringenin.
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Affiliation(s)
- Teeradate Kongpichitchoke
- †Department of Tropical Agriculture and International Cooperation and ‡Department of Biological Science and Technology, National Pingtung University of Science and Technology, Pingtung 91201, Taiwan
| | - Jue-Liang Hsu
- †Department of Tropical Agriculture and International Cooperation and ‡Department of Biological Science and Technology, National Pingtung University of Science and Technology, Pingtung 91201, Taiwan
| | - Tzou-Chi Huang
- †Department of Tropical Agriculture and International Cooperation and ‡Department of Biological Science and Technology, National Pingtung University of Science and Technology, Pingtung 91201, Taiwan
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Dhar G, Chakravarty D, Hazra J, Dhar J, Poddar A, Pal M, Chakrabarti P, Surolia A, Bhattacharyya B. Actin–Curcumin Interaction: Insights into the Mechanism of Actin Polymerization Inhibition. Biochemistry 2015; 54:1132-43. [DOI: 10.1021/bi5014408] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Gopa Dhar
- Department
of Biochemistry, Bose Institute, Kolkata 700054, India
| | | | - Joyita Hazra
- Division
of Molecular Medicine, Bose Institute, Kolkata 700054, India
| | - Jesmita Dhar
- Bioinformatics
Centre, Bose Institute, Kolkata 700054, India
| | - Asim Poddar
- Department
of Biochemistry, Bose Institute, Kolkata 700054, India
| | - Mahadeb Pal
- Division
of Molecular Medicine, Bose Institute, Kolkata 700054, India
| | | | - Avadhesha Surolia
- Molecular
Biophysics Unit, Indian Institute of Science, Bangalore 560012, India
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Affiliation(s)
- Joydip Das
- Department of Pharmacological
and Pharmaceutical Sciences, College of Pharmacy, University of Houston, 521 Science and Research Building 2, Houston, Texas 77204, United States
| | - Ghazi M. Rahman
- Department of Pharmacological
and Pharmaceutical Sciences, College of Pharmacy, University of Houston, 521 Science and Research Building 2, Houston, Texas 77204, United States
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Jirásek P, Amslinger S, Heilmann J. Synthesis of natural and non-natural curcuminoids and their neuroprotective activity against glutamate-induced oxidative stress in HT-22 cells. JOURNAL OF NATURAL PRODUCTS 2014; 77:2206-2217. [PMID: 25313922 DOI: 10.1021/np500396y] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
A strategy for the synthesis of natural and non-natural 5-deoxy-6,7-dihydrocurcuminoids (diarylheptanoids) was developed for the preparation of 14 compounds with varying aromatic substituent patterns and a different functionality in the aliphatic seven-carbon chain. The in vitro protective activity against glutamate-induced neuronal cell death was examined in the murine hippocampal cell line HT-22 to find structural motifs responsible for neuroprotective effects in vitro. Among the tested compounds the ferulic acid-like unit, present in the structures of (E)-1,7-bis(4-hydroxy-3-methoxyphenyl)hept-1-en-3-one (5) and (E)-1-(4-hydroxy-3-methoxyphenyl)-7-(4-hydroxyphenyl)hept-1-en-3-one (7), appeared to be an important feature for protection against glutamate-induced neurotoxicity. Both compounds demonstrated significant neuroprotective activity in a concentration range between 1 and 25 μM without showing toxic effects in a cytotoxicity assay with HT-22 cells. Furthermore, (E)-1,7-bis(3,4-dihydroxyphenyl)hept-1-en-3-one (9), exhibiting a caffeic acid-like structural motif, displayed a neuroprotective activity at a nontoxic concentration of 25 μM. In contrast, (1E,6E)-1,7-bis(3,4-dihydroxyphenyl)hepta-1,6-diene-3,5-dione (4, di-O-demethylcurcumin) showed mainly cytotoxic effects. A corresponding single-ring analogue that contains the ferulic acid-like unit as an enone was not active.
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Affiliation(s)
- Petr Jirásek
- Institut für Pharmazie and ‡Institut für Organische Chemie, Universität Regensburg , Universitätsstraße 31, 93053 Regensburg, Germany
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37
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Curcumin, a natural antioxidant, acts as a noncompetitive inhibitor of human RNase L in presence of its cofactor 2-5A in vitro. BIOMED RESEARCH INTERNATIONAL 2014; 2014:817024. [PMID: 25254215 PMCID: PMC4165196 DOI: 10.1155/2014/817024] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/05/2014] [Revised: 06/08/2014] [Accepted: 06/10/2014] [Indexed: 01/09/2023]
Abstract
Ribonuclease L (RNase L) is an antiviral endoribonuclease of the innate immune system, which is induced and activated by viral infections, interferons, and double stranded RNA (dsRNA) in mammalian cells. Although, RNase L is generally protective against viral infections, abnormal RNase L expression and activity have been associated with a number of diseases. Here, we show that curcumin, a natural plant-derived anti-inflammatory active principle, inhibits RNase L activity; hence, it may be exploited for therapeutic interventions in case of pathological situations associated with excess activation of RNase L.
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Abstract
Curcumin (diferuloylmethane) is the biphenolic active compound of turmeric. Curcumin has been used for hundreds of years to treat various ailments. Curcumin has been reported to exert numerous pharmacological effects by modulating multiple molecular targets including those involved in the pathogenesis of cancer. Cancer has been characterized as the dysregulation of cell signaling pathways through gradual alteration of regulatory proteins and through gene mutation. Curcumin is a highly pleiotropic molecule that modulates several intracellular signaling pathways in cancer. The pleiotropic activities of curcumin have been attributed to its novel molecular structure. Based on its β-diketone moiety, curcumin exists in keto-enol tautomers, and this tautomerism favors interaction and binding with a wide range of enzymes. Several studies have shown modulation of numerous signaling enzymes by curcumin including, LOX, COX-2, XO, proteasomes, Ca(2+)-ATPase of sarcoplasmic reticulum, MMPs, HAT, HDAC, DNMT1, DNA polymerase λ, ribonucleases, GloI, protein kinases (PKA, PKB, PKC, v-Src, GSK-3β, ErbB2), protein reductases (TrxR1, AR), GSH, ICDHs, peroxidases (Prx1, Prx2, Prx6) by treatment with curcumin. Various biophysical analyses have been reported, which shows the underlying molecular interaction of curcumin with multiple targets in terms of binding affinities. The current chapter describes how curcumin binds and modulates multiple enzymes involved cancer. Published clinical trial studies with curcumin in cancer management will also be discussed.
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Affiliation(s)
- Adeeb Shehzad
- School of Life Sciences, BK21 Plus KNU Creative BioResearch Group, Kyungpook National University, Daegu, Republic of Korea
| | - Raheem Shahzad
- School of Applied Biosciences, College of Agriculture and Life Sciences, Kyungpook National University, Daegu, Republic of Korea
| | - Young Sup Lee
- School of Life Sciences, BK21 Plus KNU Creative BioResearch Group, Kyungpook National University, Daegu, Republic of Korea.
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Mamidi N, Panda S, Borah R, Manna D. Synthesis and protein kinase C (PKC)-C1 domain binding properties of diacyltetrol based anionic lipids. MOL. BIOSYST. 2014; 10:3002-13. [DOI: 10.1039/c4mb00382a] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Protein kinase C-C1 domain binding specificity of the anionic hybrid lipids.
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Affiliation(s)
- Narsimha Mamidi
- Department of Chemistry
- Indian Institute of Technology Guwahati
- Assam 781039, India
| | - Subhankar Panda
- Department of Chemistry
- Indian Institute of Technology Guwahati
- Assam 781039, India
| | - Rituparna Borah
- Department of Chemistry
- Indian Institute of Technology Guwahati
- Assam 781039, India
| | - Debasis Manna
- Department of Chemistry
- Indian Institute of Technology Guwahati
- Assam 781039, India
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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: 360] [Impact Index Per Article: 32.7] [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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Puvvada N, Rajput S, Kumar BNP, Mandal M, Pathak A. Exploring the fluorescence switching phenomenon of curcumin encapsulated niosomes: in vitro real time monitoring of curcumin release to cancer cells. RSC Adv 2013. [DOI: 10.1039/c2ra23382g] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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PKC activation by resveratrol derivatives with unsaturated aliphatic chain. PLoS One 2012; 7:e52888. [PMID: 23285216 PMCID: PMC3528653 DOI: 10.1371/journal.pone.0052888] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2012] [Accepted: 11/22/2012] [Indexed: 01/04/2023] Open
Abstract
Resveratrol (1) is a naturally occurring phytoalexin that affects a variety of human disease models, including cardio- and neuroprotection, immune regulation, and cancer chemoprevention. One of the possible mechanisms by which resveratrol affects these disease states is by affecting the cellular signaling network involving protein kinase C (PKC). PKC is the family of serine/threonine kinases, whose activity is inhibited by resveratrol. To develop PKC isotype selective molecules on the resveratrol scaffold, several analogs (2–5) of resveratrol with a long aliphatic chain varying with number of unsaturated doubled bonds have been synthesized, their cytotoxic effects on CHO-K1 cells are measured and their effects on the membrane translocation properties of PKCα and PKCε have been determined. The analogs showed less cytotoxic effects on CHO-K1 cells. Analog 4 with three unsaturated double bonds in its aliphatic chain activated PKCα, but not PKCε. Analog 4 also activated ERK1/2, the downstream proteins in the PKC signaling pathway. Resveratrol analogs 2–5, however, did not show any inhibition of the phorbol ester-induced membrane translocation for either PKCα or PKCε. Molecular docking of 4 into the activator binding site of PKCα revealed that the resveratrol moiety formed hydrogen bonds with the activator binding residues and the aliphatic chain capped the activator binding loops making its surface hydrophobic to facilitate its interaction with the plasma membrane. The present study shows that subtle changes in the resveratrol structure can have profound impact on the translocation properties of PKCs. Therefore, resveratrol scaffold can be used to develop PKC selective modulators for regulating associated disease states.
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Abstract
Rottlerin and curcumin are natural plant polyphenols with a long tradition in folk medicine. Over the past two decades, curcumin has been extensively investigated, while rottlerin has received much less attention, in part, as a consequence of its reputation as a selective PKCδ inhibitor. A comparative analysis of genomic, proteomic, and cell signaling studies revealed that rottlerin and curcumin share a number of targets and have overlapping effects on many biological processes. Both molecules, indeed, modulate the activity and/or expression of several enzymes (PKCδ, heme oxygenase, DNA methyltransferase, cyclooxygenase, lipoxygenase) and transcription factors (NF-κB, STAT), and prevent aggregation of different amyloid precursors (α-synuclein, amyloid Aβ, prion proteins, lysozyme), thereby exhibiting convergent antioxidant, anti-inflammatory, and antiamyloid actions. Like curcumin, rottlerin could be a promising candidate in the fight against a variety of human diseases.
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Affiliation(s)
- Emanuela Maioli
- Department of Physiology, University of Siena, Siena, Italy.
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Mamidi N, Borah R, Sinha N, Jana C, Manna D. Effects of Ortho Substituent Groups of Protocatechualdehyde Derivatives on Binding to the C1 Domain of Novel Protein Kinase C. J Phys Chem B 2012; 116:10684-92. [DOI: 10.1021/jp304787j] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Narsimha Mamidi
- Department of Chemistry, Indian Institute of Technology Guwahati, Assam 781039, India
| | - Rituparna Borah
- Department of Chemistry, Indian Institute of Technology Guwahati, Assam 781039, India
| | - Narayan Sinha
- Department of Chemistry, Indian Institute of Technology Guwahati, Assam 781039, India
| | - Chandramohan Jana
- Department of Chemistry, Indian Institute of Technology Guwahati, Assam 781039, India
| | - Debasis Manna
- Department of Chemistry, Indian Institute of Technology Guwahati, Assam 781039, India
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Mamidi N, Gorai S, Sahoo J, Manna D. Alkyl cinnamates as regulator for the C1 domain of protein kinase C isoforms. Chem Phys Lipids 2012; 165:320-30. [DOI: 10.1016/j.chemphyslip.2012.02.010] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2011] [Revised: 02/22/2012] [Accepted: 02/24/2012] [Indexed: 12/11/2022]
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Mamidi N, Gorai S, Mukherjee R, Manna D. Development of diacyltetrol lipids as activators for the C1 domain of protein kinase C. MOLECULAR BIOSYSTEMS 2012; 8:1275-85. [PMID: 22301880 DOI: 10.1039/c2mb05452c] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The protein kinase C (PKC) family of serine/threonine kinases is an attractive drug target for the treatment of cancer and other diseases. Diacylglycerol (DAG), phorbol esters and others act as ligands for the C1 domain of PKC isoforms. Inspection of the crystal structure of the PKCδ C1b subdomain in complex with phorbol-13-O-acetate shows that one carbonyl group and two hydroxyl groups play pivotal roles in recognition of the C1 domain. To understand the importance of two hydroxyl groups of phorbol esters in PKC binding and to develop effective PKC activators, we synthesized DAG like diacyltetrols (DATs) and studied binding affinities with C1b subdomains of PKCδ and PKCθ. DATs, with the stereochemistry of natural DAGs at the sn-2 position, were synthesized from (+)-diethyl L-tartrate in four to seven steps as single isomers. The calculated EC(50) values for the short and long chain DATs varied in the range of 3-6 μM. Furthermore, the fluorescence anisotropy values of the proteins were increased in the presence of DATs in a similar manner to that of DAGs. Molecular docking of DATs (1b-4b) with PKCδ C1b showed that the DATs form hydrogen bonds with the polar residues and backbone of the protein, at the same binding site, as that of DAG and phorbol esters. Our findings reveal that DATs represent an attractive group of C1 domain ligands that can be used as research tools or further structurally modified for potential drug development.
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Affiliation(s)
- Narsimha Mamidi
- Department of Chemistry, Indian Institute of Technology Guwahati, Assam 781039, India
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Gupta SC, Prasad S, Kim JH, Patchva S, Webb LJ, Priyadarsini IK, Aggarwal BB. Multitargeting by curcumin as revealed by molecular interaction studies. Nat Prod Rep 2011; 28:1937-55. [PMID: 21979811 DOI: 10.1039/c1np00051a] [Citation(s) in RCA: 415] [Impact Index Per Article: 31.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Curcumin (diferuloylmethane), the active ingredient in turmeric (Curcuma longa), is a highly pleiotropic molecule with anti-inflammatory, anti-oxidant, chemopreventive, chemosensitization, and radiosensitization activities. The pleiotropic activities attributed to curcumin come from its complex molecular structure and chemistry, as well as its ability to influence multiple signaling molecules. Curcumin has been shown to bind by multiple forces directly to numerous signaling molecules, such as inflammatory molecules, cell survival proteins, protein kinases, protein reductases, histone acetyltransferase, histone deacetylase, glyoxalase I, xanthine oxidase, proteasome, HIV1 integrase, HIV1 protease, sarco (endo) plasmic reticulum Ca(2+) ATPase, DNA methyltransferases 1, FtsZ protofilaments, carrier proteins, and metal ions. Curcumin can also bind directly to DNA and RNA. Owing to its β-diketone moiety, curcumin undergoes keto-enol tautomerism that has been reported as a favorable state for direct binding. The functional groups on curcumin found suitable for interaction with other macromolecules include the α, β-unsaturated β-diketone moiety, carbonyl and enolic groups of the β-diketone moiety, methoxy and phenolic hydroxyl groups, and the phenyl rings. Various biophysical tools have been used to monitor direct interaction of curcumin with other proteins, including absorption, fluorescence, Fourier transform infrared (FTIR) and circular dichroism (CD) spectroscopy, surface plasmon resonance, competitive ligand binding, Forster type fluorescence resonance energy transfer (FRET), radiolabeling, site-directed mutagenesis, matrix-assisted laser desorption/ionization time-of-flight mass spectrometry (MALDI-TOF MS), immunoprecipitation, phage display biopanning, electron microscopy, 1-anilino-8-naphthalene-sulfonate (ANS) displacement, and co-localization. Molecular docking, the most commonly employed computational tool for calculating binding affinities and predicting binding sites, has also been used to further characterize curcumin's binding sites. Furthermore, the ability of curcumin to bind directly to carrier proteins improves its solubility and bioavailability. In this review, we focus on how curcumin directly targets signaling molecules, as well as the different forces that bind the curcumin-protein complex and how this interaction affects the biological properties of proteins. We will also discuss various analogues of curcumin designed to bind selective targets with increased affinity.
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Affiliation(s)
- Subash C Gupta
- Cytokine Research Laboratory, Department of Experimental Therapeutics, The University of Texas MD Anderson Cancer Center, Houston, 77030, USA
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Das J, Pany S, Panchal S, Majhi A, Rahman GM. Binding of isoxazole and pyrazole derivatives of curcumin with the activator binding domain of novel protein kinase C. Bioorg Med Chem 2011; 19:6196-202. [PMID: 21975067 DOI: 10.1016/j.bmc.2011.09.011] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2011] [Accepted: 09/08/2011] [Indexed: 11/26/2022]
Abstract
The protein kinase C (PKC) family of serine/threonine kinases is an attractive drug target because of its involvement in the regulation of various cellular functions, including cell growth, differentiation, metabolism, and apoptosis. The endogenous PKC activator diacylglycerol contains two long carbon chains, which are attached to the glycerol moiety via ester linkage. Natural product curcumin (1), the active constituent of Curcuma L., contains two carbonyl and two hydroxyl groups. It modulates PKC activity and binds to the activator binding site (Majhi et al., Bioorg. Med. Chem.2010, 18, 1591). To investigate the role of the carbonyl and hydroxyl groups of curcumin in PKC binding and to develop curcumin derivatives as effective PKC modulators, we synthesized several isoxazole and pyrazole derivatives of curcumin (2-6), characterized their absorption and fluorescence properties, and studied their interaction with the activator-binding second cysteine-rich C1B subdomain of PKCδ, PKCε and PKCθ. The EC(50)s of the curcumin derivatives for protein fluorescence quenching varied in the range of 3-25 μM. All the derivatives showed higher binding with the PKCθC1B compared with PKCδC1B and PKCεC1B. Fluorescence emission maxima of 2-5 were blue shifted in the presence of the C1B domains, confirming their binding to the protein. Molecular docking revealed that hydroxyl, carbonyl and pyrazole ring of curcumin (1), pyrazole (2), and isoxazole (4) derivatives form hydrogen bonds with the protein residues. The present result shows that isoxazole and pyrazole derivatives bind to the activator binding site of novel PKCs and both carbonyl and hydroxy groups of curcumin play roles in the binding process, depending on the nature of curcumin derivative and the PKC isotype used.
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Affiliation(s)
- Joydip Das
- Department of Pharmacological and Pharmaceutical Sciences, College of Pharmacy, University of Houston, Houston, TX 77204, United States.
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Das J, Pany S, Majhi A. Chemical modifications of resveratrol for improved protein kinase C alpha activity. Bioorg Med Chem 2011; 19:5321-33. [PMID: 21880495 DOI: 10.1016/j.bmc.2011.08.008] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2011] [Revised: 07/28/2011] [Accepted: 08/03/2011] [Indexed: 12/20/2022]
Abstract
Resveratrol (1) is a naturally occurring phytoalexin that affects a variety of human disease models, including cardio- and neuroprotection, immune regulation, and cancer chemoprevention. One of the possible mechanisms by which resveratrol affects these disease states is by affecting the cellular signaling network involving protein kinase C alpha (PKCα). PKCα is a member of the family of serine/threonine kinases, whose activity is inhibited by resveratrol. To study the structure-activity relationship, several monoalkoxy, dialkoxy and hydroxy analogs of resveratrol have been synthesized, tested for their cytotoxic effects on HEK293 cells, measured their effects on the membrane translocation properties of PKCα in the presence and absence of the PKC activator TPA, and studied their binding with the activator binding domain of PKCα. The analogs showed less cytotoxic effects on HEK293 cells and caused higher membrane translocation (activation) than that of resveratrol. Among all the analogs, 3, 16 and 25 showed significantly higher activation than resveratrol. Resveratrol analogs, however, inhibited phorbol ester-induced membrane translocation, and the inhibition was less than that of resveratrol. Binding studies using steady state fluorescence spectroscopy indicated that resveratrol and the analogs bind to the second cysteine-rich domain of PKCα. The molecular docking studies indicated that resveratrol and the analogs interact with the protein by forming hydrogen bonds through its hydroxyl groups. These results signify that molecules developed on a resveratrol scaffold can attenuate PKCα activity and this strategy can be used to regulate various disease states involving PKCα.
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Affiliation(s)
- Joydip Das
- Department of Pharmacological and Pharmaceutical Sciences, College of Pharmacy, University of Houston, Houston, TX 77204, United States.
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af Gennäs GB, Mologni L, Ahmed S, Rajaratnam M, Marin O, Lindholm N, Viltadi M, Gambacorti-Passerini C, Scapozza L, Yli-Kauhaluoma J. Design, synthesis, and biological activity of urea derivatives as anaplastic lymphoma kinase inhibitors. ChemMedChem 2011; 6:1680-92. [PMID: 21721129 DOI: 10.1002/cmdc.201100168] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2011] [Revised: 05/22/2011] [Indexed: 11/11/2022]
Abstract
In anaplastic large-cell lymphomas, chromosomal translocations involving the kinase domain of anaplastic lymphoma kinase (ALK), generally fused to the 5' part of the nucleophosmin gene, produce highly oncogenic ALK fusion proteins that deregulate cell cycle, apoptosis, and differentiation in these cells. Other fusion oncoproteins involving ALK, such as echinoderm microtubule-associated protein-like 4-ALK, were recently found in patients with non-small-cell lung, breast, and colorectal cancers. Recent research has focused on the development of inhibitors for targeted therapy of these ALK-positive tumors. Because kinase inhibitors that target the inactive conformation are thought to be more specific than ATP-targeted inhibitors, we investigated the possibility of using two known inhibitors, doramapimod and sorafenib, which target inactive kinases, to design new urea derivatives as ALK inhibitors. We generated a homology model of ALK in its inactive conformation complexed with doramapimod or sorafenib in its active site. The results elucidated why doramapimod is a weak inhibitor and why sorafenib does not inhibit ALK. Virtual screening of commercially available compounds using the homology model of ALK yielded candidate inhibitors, which were tested using biochemical assays. Herein we present the design, synthesis, biological activity, and structure-activity relationships of a novel series of urea compounds as potent ALK inhibitors. Some compounds showed inhibition of purified ALK in the high nanomolar range and selective antiproliferative activity on ALK-positive cells.
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Affiliation(s)
- Gustav Boije af Gennäs
- Division of Pharmaceutical Chemistry, Faculty of Pharmacy, University of Helsinki, P.O. Box 56 Viikinkaari 5 E, 00014 Helsinki, Finland
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