1
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Howe CL, Icka-Araki D, Viray AEG, Garza S, Frank JA. Optical Control of TRPV1 Channels In Vitro with Tethered Photopharmacology. ACS Chem Biol 2024; 19:1466-1473. [PMID: 38904446 DOI: 10.1021/acschembio.4c00052] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/22/2024]
Abstract
Transient receptor potential vanilloid 1 (TRPV1) is a nonselective cation channel that is important for nociception and inflammatory pain and is activated by a variety of nociceptive stimuli─including lipids such as capsaicin (CAP) and endocannabinoids. TRPV1's role in physiological systems is often studied by activating it with externally perfused ligands; however, this approach is plagued by poor spatiotemporal resolution. Lipid agonists are insoluble in physiological buffers and can permeate membranes to accumulate nonselectively inside cells, where they can have off-target effects. To increase the spatiotemporal precision with which we can activate lipids on cells and tissues, we previously developed optically cleavable targeted (OCT) ligands, which use protein tags (SNAP-tags) to localize a photocaged ligand on a target cellular membrane. After enrichment, the active ligand is released on a flash of light to activate nearby receptors. In our previous work, we developed an OCT-ligand to control a cannabinoid-sensitive GPCR. Here, we expand the scope of OCT-ligand technology to target TRPV1 ion channels. We synthesize a probe, OCT-CAP, that tethers to membrane-bound SNAP-tags and releases a TRPV1 agonist when triggered by UV-A irradiation. Using Ca2+ imaging and electrophysiology in HEK293T cells expressing TRPV1, we demonstrate that OCT-CAP uncaging activates TRPV1 with superior spatiotemporal precision when compared to standard diffusible ligands or photocages. This study is the first example of an OCT-ligand designed to manipulate an ion-channel target. We anticipate that these tools will find many applications in controlling lipid signaling pathways in various cells and tissues.
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Affiliation(s)
- Carmel L Howe
- Department of Chemical Physiology and Biochemistry, Oregon Health & Science University, Portland, Oregon 97239, United States
| | - David Icka-Araki
- Department of Chemical Physiology and Biochemistry, Oregon Health & Science University, Portland, Oregon 97239, United States
| | - Alexander E G Viray
- Department of Chemical Physiology and Biochemistry, Oregon Health & Science University, Portland, Oregon 97239, United States
| | - Sarahi Garza
- Department of Chemical Physiology and Biochemistry, Oregon Health & Science University, Portland, Oregon 97239, United States
- Neuroscience Graduate Program, Oregon Health & Science University, Portland, Oregon 97239, United States
| | - James A Frank
- Department of Chemical Physiology and Biochemistry, Oregon Health & Science University, Portland, Oregon 97239, United States
- Vollum Institute, Oregon Health & Science University, Portland, Oregon 97239, United States
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2
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Chen L, Gao Z, Zhang Y, Dai X, Meng F, Guo Y. A green, facile, and practical preparation of capsaicin derivatives with thiourea structure. Sci Rep 2024; 14:10576. [PMID: 38719947 PMCID: PMC11078945 DOI: 10.1038/s41598-024-61014-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2024] [Accepted: 04/30/2024] [Indexed: 05/12/2024] Open
Abstract
Capsaicin derivatives with thiourea structure (CDTS) is highly noteworthy owing to its higher analgesic potency in rodent models and higher agonism in vitro. However, the direct synthesis of CDTS remains t one or more shortcomings. In this study, we present reported a green, facile, and practical synthetic method of capsaicin derivatives with thiourea structure is developed by using an automated synthetic system, leading to a series of capsaicin derivatives with various electronic properties and functionalities in good to excellent yields.
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Affiliation(s)
- Lina Chen
- State Key Laboratory of NBC Protection for Civilian, Beijing, People's Republic of China
| | - Zhenhua Gao
- State Key Laboratory of NBC Protection for Civilian, Beijing, People's Republic of China
| | - Ye Zhang
- Sichuan University of Science and Engineering, Zigong, People's Republic of China
| | - Xiandong Dai
- State Key Laboratory of NBC Protection for Civilian, Beijing, People's Republic of China
| | - Fanhua Meng
- State Key Laboratory of NBC Protection for Civilian, Beijing, People's Republic of China
| | - Yongbiao Guo
- State Key Laboratory of NBC Protection for Civilian, Beijing, People's Republic of China.
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3
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Treat A, Henri V, Liu J, Shen J, Gil-Silva M, Morales A, Rade A, Tidgewell KJ, Kolber B, Shen Y. Novel TRPV1 Modulators with Reduced Pungency Induce Analgesic Effects in Mice. ACS OMEGA 2022; 7:2929-2946. [PMID: 35097287 PMCID: PMC8793056 DOI: 10.1021/acsomega.1c05727] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/20/2021] [Accepted: 12/31/2021] [Indexed: 06/14/2023]
Abstract
Capsaicin, the compound in hot chili peppers responsible for their pungency and an agonist of the transient receptor potential cation channel, subfamily V, member 1 (TRPV1), has long been known to promote the desensitization of nociceptors at high concentrations. This has led to the utilization and implementation of topical capsaicin cream as an analgesic to treat acute and chronic pain. Critically, the application of capsaicin cream is limited due to capsaicin's high pungency, which is experienced prior to analgesia. To combat this issue, novel capsaicin analogues were developed to provide analgesia with reduced pungency. Analogues reported in this paper add to and show some differences from previous structure-activity relationship (SAR) studies of capsaicin-like molecules against TRPV1, including the necessity of phenol in the aromatic "A-region", the secondary amide in the "B-region", and modifications in the hydrophobic "C-region". This provided a new framework for de novo small-molecule design using capsaicin as the starting point. In this study, we describe the synthesis of capsaicin analogues, their in vitro activity in Ca2+ assays, and initial in vivo pungency and feasibility studies of capsaicin analogues YB-11 and YB-16 as analgesics. Our results demonstrate that male and female mice treated with YB capsaicin analogues showed diminished pain-associated behavior in the spontaneous formalin assay as well as reduced thermal sensitivity in the hotplate assay.
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Affiliation(s)
- Anny Treat
- Department
of Neuroscience and Center for Advanced Pain Studies, University of Texas at Dallas, 800 W. Campbell Road, Richardson, Texas 75080, United States
| | - Vianie Henri
- Department
of Biological Sciences, Duquesne University, 600 Forbes Avenue, Pittsburgh, Pennsylvania 15282, United States
- Graduate
School of Pharmaceutical Sciences, Duquesne
University, 600 Forbes
Avenue, Pittsburgh, Pennsylvania 15282, United States
| | - Junke Liu
- Young
BioPharma, LLC, 110 Canal
Street, 4th Floor, Lowell, Massachusetts 01852, United States
| | - Joyce Shen
- Young
BioPharma, LLC, 110 Canal
Street, 4th Floor, Lowell, Massachusetts 01852, United States
| | - Mauricio Gil-Silva
- Department
of Neuroscience and Center for Advanced Pain Studies, University of Texas at Dallas, 800 W. Campbell Road, Richardson, Texas 75080, United States
| | - Alejandro Morales
- Department
of Neuroscience and Center for Advanced Pain Studies, University of Texas at Dallas, 800 W. Campbell Road, Richardson, Texas 75080, United States
| | - Avaneesh Rade
- Department
of Neuroscience and Center for Advanced Pain Studies, University of Texas at Dallas, 800 W. Campbell Road, Richardson, Texas 75080, United States
| | - Kevin Joseph Tidgewell
- Graduate
School of Pharmaceutical Sciences, Duquesne
University, 600 Forbes
Avenue, Pittsburgh, Pennsylvania 15282, United States
| | - Benedict Kolber
- Department
of Neuroscience and Center for Advanced Pain Studies, University of Texas at Dallas, 800 W. Campbell Road, Richardson, Texas 75080, United States
| | - Young Shen
- Young
BioPharma, LLC, 110 Canal
Street, 4th Floor, Lowell, Massachusetts 01852, United States
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4
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Ogawa Y, Zhou L, Kaneko S, Kusakabe Y. Agonistic/antagonistic properties of lactones in food flavors on the sensory ion channels TRPV1 and TRPA1. Chem Senses 2022; 47:6827387. [PMID: 36374622 DOI: 10.1093/chemse/bjac023] [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] [Indexed: 11/15/2022] Open
Abstract
Flavor compounds provide aroma and sensations in the oral cavity. They are not present alone in the oral cavity, but rather in combination with several other food ingredients. This study aimed to clarify the relationship between the mixing of pungent flavor compounds and the response of pungent receptors, TRPV1 and TRPA1 channels. We focused on lactones that activate TRPV1 despite their presence in bland foods, such as dairy products and fruits, and analyzed their interaction with receptors using TRPV1- and TRPA1-expressing HEK293 cells. We found that γ-octalactone, γ-nonalactone, and δ-nonalactone activated TRPA1. When mixed with pungent components, some γ- and δ-lactones inhibited capsaicin-mediated TRPV1 responses, and δ-dodecalactone inhibited allyl isothiocyanate-mediated TRPA1 responses. Furthermore, the dose-response relationship of capsaicin and γ-nonalactone to TRPV1 suggests that γ-nonalactone acts as an agonist or antagonist of TRPV1, depending on its concentration. Conversely, γ-nonalactone and δ-dodecalactone were found to act only as agonists and antagonists, respectively, against TRPA1. These results suggest that lactones in foods may not only endow food with aroma, but also play a role in modulating food pungency by acting on TRPV1 and TRPA1. The dose-response relationships of a mixture of flavor compounds with TRPV1 and TRPA1 provide insights into the molecular physiological basis of pungency that may be the cornerstone for developing new spice mix recipes.
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Affiliation(s)
- Yukino Ogawa
- Food Research Institute, National Agriculture and Food Research Organization (NARO), Tsukuba, Ibaraki, Japan
| | - Lanxi Zhou
- Ogawa & Co., Ltd., Material Research & Development Division, Ami, Ibaraki, Japan
| | - Shu Kaneko
- Ogawa & Co., Ltd., Material Research & Development Division, Ami, Ibaraki, Japan
| | - Yuko Kusakabe
- Food Research Institute, National Agriculture and Food Research Organization (NARO), Tsukuba, Ibaraki, Japan
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5
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6
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Ticona LA, Sánchez ÁR, Estrada CT, Palomino OM. Identification of TRPV1 Ion Channels Agonists of Tropaeolum tuberosum in Human Skin Keratinocytes. PLANTA MEDICA 2021; 87:383-394. [PMID: 33007786 DOI: 10.1055/a-1264-0572] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Tropaeolum tuberosum, commonly known as Mashua, is an herbal remedy used in traditional Andean medicine for the relief of kidney and bladder pain, as well as contusions. This study aimed to evaluate the fractions and isolated compounds from T. tuberosum with analgesic activity mediated by the transient receptor potential vanilloid-1 receptor. A bioguided phytochemical analysis based on NMR/MS was performed to identify the compounds of the n-heptane fractions from samples of purple tubers of T. tuberosum. The transient receptor potential vanilloid-1 agonist and antagonist activity were assessed through the measurement of intracellular Ca2+ in HEK001 cells. The chemical structure determination led to the identification of two alkamides: N-(2-hydroxyethyl)-7Z,10Z,13Z,16Z-docosatetraenamide (1: ) and N-oleoyldopamine (2: ). Both compounds induced increased intracellular calcium flow with IC50 values of 3.2 nM and 7.9 nM, respectively, thus activating the transient receptor potential vanilloid-1 receptor. Our research is the first report to show that these two compounds isolated from T. tuberosum can act as agonists of the transient receptor potential vanilloid-1 receptor, providing scientific evidence for the traditional use of this species in pain relief.
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Affiliation(s)
- Luis Apaza Ticona
- Department of Organic Chemistry, Faculty of Sciences, University Autónoma of Madrid, Madrid, Spain
- Department of Pharmacology, Pharmacognosy and Botany, Faculty of Pharmacy, University Complutense of Madrid, Madrid, Spain
| | - Ángel Rumbero Sánchez
- Department of Organic Chemistry, Faculty of Sciences, University Autónoma of Madrid, Madrid, Spain
| | | | - Olga M Palomino
- Department of Pharmacology, Pharmacognosy and Botany, Faculty of Pharmacy, University Complutense of Madrid, Madrid, Spain
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7
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Laolob T, Bunyapraphatsara N, Waranuch N, Pongcharoen S, Punyain W, Chancharunee S, Sakchaisri K, Pratuangdejkul J, Chongruchiroj S, Kielar F, Wichai U. Enhancement of Lipolysis in 3T3-L1 Adipocytes by Nitroarene Capsaicinoid Analogs. Nat Prod Commun 2021. [DOI: 10.1177/1934578x20987949] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
Abstract
Transient receptor potential vanilloid 1 (TRPV1) activation by capsaicin binding increased intracellular calcium influx and stimulated adipocyte-to-adipocyte communication, leading to lipolysis. Generally, enhancement of π-stacking capabilities improves certain binding interactions. Notably, nitroarenes exhibit strong binding interactions with aromatic amino acid side chains in proteins. New capsaicinoid analogs were designed by substitution of the OCH3 group with a nitrogen dioxide (NO2) group on the vanillyl ring to investigate how π-stacking interactions in capsaicinoid analogs contribute to lipolysis. Capsaicinoid analogs, nitro capsaicin (5), and nitro dihydrocapsaicin (6) were prepared in moderate yields via coupling of a nitroaromatic amine salt and fatty acids. Oil Red O staining and triglyceride assays with 10 µM loading of capsaicin (CAP), dihydrocapsaicin (DHC), 5, and 6 were performed to investigate their effect on lipolysis in 3T3-L1 adipocytes. Both assay results indicated that 5 and 6 decreased lipid accumulation by 13.6% and 14.7%, respectively, and significantly reduced triglyceride content by 26.9% and 28.4%, respectively, in comparison with the control experiment. Furthermore, the decrease in triglyceride content observed in response to nitroarene capsaicinoid analogs was approximately 2-folds higher than that of CAP and DHC. These results arose from the NO2 group augmented π-π stacking with Tyr511 and the attractive charge interaction with Glu570 affecting binding interactions with TRPV1 receptors.
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Affiliation(s)
- Thanet Laolob
- Department of Chemistry, Faculty of Science, Naresuan University, Phitsanulok, Thailand
| | | | - Neti Waranuch
- Department of Pharmaceutical Technology, Faculty of Pharmaceutical Sciences, Naresuan University, Phitsanulok, Thailand
| | - Sutatip Pongcharoen
- Department of Medicine, Faculty of Medicine, Naresuan University, Phitsanulok, Thailand
| | - Wikorn Punyain
- Department of Chemistry, Faculty of Science, Naresuan University, Phitsanulok, Thailand
| | - Sirirat Chancharunee
- Department of Chemistry, Faculty of Science, Chiang Mai University, Chiang Mai, Thailand
| | - Krisada Sakchaisri
- Department of Pharmacology, Faculty of Pharmacy, Mahidol University, Bangkok, Thailand
| | | | - Sumet Chongruchiroj
- Department of Microbiology, Faculty of Pharmacy, Mahidol University, Bangkok, Thailand
| | - Filip Kielar
- Department of Chemistry and Center of Excellence in Biomaterials, Naresuan University, Phitsanulok, Thailand
| | - Uthai Wichai
- Department of Chemistry and Center of Excellence in Biomaterials, Naresuan University, Phitsanulok, Thailand
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8
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Tobita N, Makino M, Fujita R, Jyotaki M, Shinohara Y, Yamamoto T. Sweet scent lactones activate hot capsaicin receptor, TRPV1. Biochem Biophys Res Commun 2020; 534:547-552. [PMID: 33239169 DOI: 10.1016/j.bbrc.2020.11.046] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2020] [Accepted: 11/12/2020] [Indexed: 12/18/2022]
Abstract
In this study, we investigated the activation of Transient receptor potential vanilloid subtype 1, TRPV1, by lactones, a representative flavor ingredient currently used for foods and beverages. As a result, we found that some lactones having C4 acyl chain length, γ-octalactone, δ-nonalactone and β-methyl-γ-octalactone, γ-undecalactone with C7 acyl chain length and δ-undecalactone with C6 acyl chain length activated TRPV1. TRPV1 is known as a non-selective cation channels that respond to a wide range of physical and chemical stimuli such as high temperature, protons, capsaicin and so on. Furthermore, it has been also demonstrated that activation of TRPV1 induced energy expenditure enhancement and thermogenesis, suppressed accumulation of visceral fat in mice and prevented non-alcoholic fatty acid liver. Thus, lactones that function as TRPV1 agonists are thought to be important candidates for decreasing the risks of developing a metabolic syndrome.
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Affiliation(s)
- Naoya Tobita
- Tobacco Science Research Center, Japan Tobacco Inc, 6-2 Umegaoka, Aoba, Yokohama, Kanagawa, 227-8512, Japan
| | - Masanari Makino
- Tobacco Science Research Center, Japan Tobacco Inc, 6-2 Umegaoka, Aoba, Yokohama, Kanagawa, 227-8512, Japan
| | - Ryujiro Fujita
- Tobacco Science Research Center, Japan Tobacco Inc, 6-2 Umegaoka, Aoba, Yokohama, Kanagawa, 227-8512, Japan
| | - Masafumi Jyotaki
- Tobacco Science Research Center, Japan Tobacco Inc, 6-2 Umegaoka, Aoba, Yokohama, Kanagawa, 227-8512, Japan
| | - Yuhei Shinohara
- Tobacco Science Research Center, Japan Tobacco Inc, 6-2 Umegaoka, Aoba, Yokohama, Kanagawa, 227-8512, Japan
| | - Takeshi Yamamoto
- Tobacco Science Research Center, Japan Tobacco Inc, 6-2 Umegaoka, Aoba, Yokohama, Kanagawa, 227-8512, Japan.
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9
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Quantifying Capsaicinoids from Chili Pepper and Motor Oil Mixtures Used in Elephant Deterrent Fences. Chromatographia 2020. [DOI: 10.1007/s10337-020-03934-8] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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10
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Pereira GJV, Tavares MT, Azevedo RA, Martins BB, Cunha MR, Bhardwaj R, Cury Y, Zambelli VO, Barbosa EG, Hediger MA, Parise-Filho R. Capsaicin-like analogue induced selective apoptosis in A2058 melanoma cells: Design, synthesis and molecular modeling. Bioorg Med Chem 2019; 27:2893-2904. [PMID: 31104785 DOI: 10.1016/j.bmc.2019.05.020] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2019] [Revised: 04/13/2019] [Accepted: 05/12/2019] [Indexed: 01/19/2023]
Abstract
The use of molecules inspired by natural scaffolds has proven to be a very promising and efficient method of drug discovery. In this work, capsaicin, a natural product from Capsicum peppers with antitumor properties, was used as a prototype to obtain urea and thiourea analogues. Among the most promising compounds, the thiourea compound 6g exhibited significant cytotoxic activity against human melanoma A2058 cells that was twice as high as that of capsaicin. Compound 6g induced significant and dose-dependent G0/G1 cell cycle arrest in A2058 cells triggering cell death by apoptosis. Our results suggest that 6g modulates the RAF/MEK/ERK pathway, inducing important morphological changes, such as formation of apoptotic bodies and increased levels of cleaved caspase-3. Compared to capsaicin, 6g had no significant TRPV1/6 agonist effect or irritant effects on mice. Molecular modeling studies corroborate the biological findings and suggest that 6g, besides being a more reactive molecule towards its target, may also present a better pharmacokinetic profile than capsaicin. Inverse virtual screening strategy found MEK1 as a possible biological target for 6g. Consistent with these findings, our observations suggested that 6g could be developed as a potential anticancer agent.
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Affiliation(s)
- Gustavo José Vasco Pereira
- Laboratory of Design and Synthesis of Bioactive Substances (LAPESSB), Department of Pharmacy, Faculty of Pharmaceutical Sciences, University of São Paulo, São Paulo, Brazil
| | - Maurício Temotheo Tavares
- Laboratory of Design and Synthesis of Bioactive Substances (LAPESSB), Department of Pharmacy, Faculty of Pharmaceutical Sciences, University of São Paulo, São Paulo, Brazil
| | - Ricardo Alexandre Azevedo
- Experimental Oncology Unit (UNONEX), Department of Microbiology, Immunology and Parasitology, Federal University of São Paulo, São Paulo, Brazil
| | | | - Micael Rodrigues Cunha
- Laboratory of Design and Synthesis of Bioactive Substances (LAPESSB), Department of Pharmacy, Faculty of Pharmaceutical Sciences, University of São Paulo, São Paulo, Brazil; Department of Chemistry and Biochemistry, University of Bern, Freiestrasse 3, 3012 Bern, Switzerland
| | - Rajesh Bhardwaj
- Institute of Biochemistry and Molecular Medicine, National Center for Competence in Research, NCCR TransCure, University of Bern, Bühlstrasse 28, 3012 Bern, Switzerland
| | - Yara Cury
- Laboratory of Pain and Signaling, Butantan Institute, São Paulo, Brazil
| | | | | | - Matthias A Hediger
- Institute of Biochemistry and Molecular Medicine, National Center for Competence in Research, NCCR TransCure, University of Bern, Bühlstrasse 28, 3012 Bern, Switzerland
| | - Roberto Parise-Filho
- Laboratory of Design and Synthesis of Bioactive Substances (LAPESSB), Department of Pharmacy, Faculty of Pharmaceutical Sciences, University of São Paulo, São Paulo, Brazil.
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11
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2-Methylacrylamide as a bioisoster of thiourea group for 1,3-dibenzylthioureido TRPV1 receptor antagonists. Bioorg Med Chem Lett 2018; 28:2080-2083. [PMID: 29709253 DOI: 10.1016/j.bmcl.2018.04.044] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2018] [Revised: 04/13/2018] [Accepted: 04/16/2018] [Indexed: 01/06/2023]
Abstract
In order to replace thiourea group with the more drug-like moiety for 1,3-dibenzylthioureas having TRPV1 antagonist activity, we introduced a set of functional groups between the two aromatic rings based on bioisosteric replacement. The synthesized bioisosteres of 1,3-dibenzylthioureas were tested for their antagonist activities on TRPV1 by 45Ca2+-influx assay using neonatal rat cultured spinal sensory neurons. Among the tested 14 kinds of bioisosters, 2-methylacrylamide group was the best candidate to replace thiourea group. Compound 7c, 2-methylacrylamide analog of ATC-120, showed as potent as ATC-120 in its antagonist activity. In addition, 2-methylacrylamide analog 7e having vinyl moiety showed the most potent activity with 0.022 μM of IC50 value, indicating that thiourea group of 1,3-dibenzylthioureas could be replaced to 2-methylacrylamide without loss of their potencies.
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12
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Pallavi P, Pretze M, Caballero J, Li Y, Hofmann BB, Stamellou E, Klotz S, Wängler C, Wängler B, Loesel R, Roth S, Theisinger B, Moerz H, Binzen U, Greffrath W, Treede RD, Harmsen MC, Krämer BK, Hafner M, Yard BA, Kälsch AI. Analyses of Synthetic N-Acyl Dopamine Derivatives Revealing Different Structural Requirements for Their Anti-inflammatory and Transient-Receptor-Potential-Channel-of-the-Vanilloid-Receptor-Subfamily-Subtype-1 (TRPV1)-Activating Properties. J Med Chem 2018. [PMID: 29543451 DOI: 10.1021/acs.jmedchem.8b00156] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
We studied the chemical entities within N-octanoyl dopamine (NOD) responsible for the activation of transient-receptor-potential channels of the vanilloid-receptor subtype 1 (TRPV1) and inhibition of inflammation. The potency of NOD in activating TRPV1 was significantly higher compared with those of variants in which the ortho-dihydroxy groups were acetylated, one of the hydroxy groups was omitted ( N-octanoyl tyramine), or the ester functionality consisted of a bulky fatty acid ( N-pivaloyl dopamine). Shortening of the amide linker (ΔNOD) slightly increased its potency, which was further increased when the carbonyl and amide groups (ΔNODR) were interchanged. With the exception of ΔNOD, the presence of an intact catechol structure was obligatory for the inhibition of VCAM-1 and the induction of HO-1 expression. Because TRPV1 activation and the inhibition of inflammation by N-acyl dopamines require different structural entities, our findings provide a framework for the rational design of TRPV1 agonists with improved anti-inflammatory properties.
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Affiliation(s)
- Prama Pallavi
- Institute for Molecular and Cellular Biology , Mannheim University of Applied Sciences , Mannheim 68163 , Germany
| | | | - Julio Caballero
- Center for Bioinformatics and Molecular Simulations, Faculty of Engineering in Bioinformatics , Universidad de Talca , Talca 3460000 , Chile
| | | | | | | | | | | | | | - Ralf Loesel
- Department of Applied Chemistry , Technical University of Applied Sciences , Nuremberg 90489 , Germany
| | - Steffen Roth
- Department of Applied Chemistry , Technical University of Applied Sciences , Nuremberg 90489 , Germany
| | | | | | | | | | | | - Martin C Harmsen
- Department of Pathology and Medical Biology, University Medical Centre Groningen , University of Groningen , Groningen 9713 , The Netherlands
| | | | - Mathias Hafner
- Institute for Molecular and Cellular Biology , Mannheim University of Applied Sciences , Mannheim 68163 , Germany
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13
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Factors affecting the uncaging efficiency of 500 nm light-activatable BODIPY caging group. Bioorg Med Chem Lett 2018; 28:1-5. [DOI: 10.1016/j.bmcl.2017.11.030] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2017] [Accepted: 11/15/2017] [Indexed: 12/20/2022]
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14
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Pearce LV, Ann J, Jung A, Thorat SA, Herold BKA, Habtemichael AD, Blumberg PM, Lee J. Novel Radiolabeled Vanilloid with Enhanced Specificity for Human Transient Receptor Potential Vanilloid 1 (TRPV1). J Med Chem 2017; 60:8246-8252. [PMID: 28892388 DOI: 10.1021/acs.jmedchem.7b00859] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
Transient receptor potential vanilloid 1 (TRPV1) has emerged as a promising therapeutic target. While radiolabeled resiniferatoxin (RTX) has provided a powerful tool for characterization of vanilloid binding to TRPV1, TRPV1 shows 20-fold weaker binding to the human TRPV1 than to the rodent TRPV1. We now describe a tritium radiolabeled synthetic vanilloid antagonist, 1-((2-(4-(methyl-[3H])piperidin-1-yl-4-[3H])-6-(trifluoromethyl)pyridin-3-yl)methyl)-3-(3-oxo-3,4-dihydro-2H-benzo[b][1,4]oxazin-8-yl)urea ([3H]MPOU), that embodies improved absolute affinity for human TRPV1 and improved synthetic accessibility.
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Affiliation(s)
- Larry V Pearce
- Laboratory of Cancer Biology and Genetics, Center for Cancer Research, National Cancer Institute, NIH , Bethesda, Maryland 20892-4255, United States
| | - Jihyae Ann
- Laboratory of Medicinal Chemistry, Research Institute of Pharmaceutical Sciences, College of Pharmacy, Seoul National University , Seoul 08826, Republic of Korea
| | - Aeran Jung
- Laboratory of Medicinal Chemistry, Research Institute of Pharmaceutical Sciences, College of Pharmacy, Seoul National University , Seoul 08826, Republic of Korea
| | - Shivaji A Thorat
- Laboratory of Medicinal Chemistry, Research Institute of Pharmaceutical Sciences, College of Pharmacy, Seoul National University , Seoul 08826, Republic of Korea
| | - Brienna K A Herold
- Laboratory of Cancer Biology and Genetics, Center for Cancer Research, National Cancer Institute, NIH , Bethesda, Maryland 20892-4255, United States
| | - Amelework D Habtemichael
- Laboratory of Cancer Biology and Genetics, Center for Cancer Research, National Cancer Institute, NIH , Bethesda, Maryland 20892-4255, United States
| | - Peter M Blumberg
- Laboratory of Cancer Biology and Genetics, Center for Cancer Research, National Cancer Institute, NIH , Bethesda, Maryland 20892-4255, United States
| | - Jeewoo Lee
- Laboratory of Medicinal Chemistry, Research Institute of Pharmaceutical Sciences, College of Pharmacy, Seoul National University , Seoul 08826, Republic of Korea
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15
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de la Rosa-Lugo V, Acevedo-Quiroz M, Déciga-Campos M, Rios MY. Antinociceptive effect of natural and synthetic alkamides involves TRPV1 receptors. J Pharm Pharmacol 2017; 69:884-895. [DOI: 10.1111/jphp.12721] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2016] [Accepted: 03/04/2017] [Indexed: 12/16/2022]
Abstract
Abstract
Objective
To establish the role of TRPV1 receptor in the antinociceptive effect of natural alkamides (i.e. affinin, longipinamide A, longipenamide A and longipenamide B) isolated from Heliopsis longipes (A. Gray) S.F. Blake and some related synthetic alkamides (i.e. N-isobutyl-feruloylamide and N-isobutyl-dihydroferuloylamide).
Methods
The orofacial formalin test was used to assess the antinociceptive activity of natural (1–30 μg, orofacial region) and synthetic alkamides (0.1–100 μg, orofacial region). The alkamide capsaicin was used as positive control, while capsazepine was used to evaluate the possible participation of TRPV1 receptor in alkamide-induced antinociception.
Key findings
Natural (1–30 μg) and synthetic (0.1–100 μg) alkamides administered to the orofacial region produced antinociception in mice. The antinociceptive effect induced by affinin, N-isobutyl-feruloylamide and N-isobutyl-dihydroferuloylamide was antagonized by capsazepine but not by vehicle.
Conclusions
These results suggest that alkamide affinin, longipinamide A, longipenamide A and longipenamide B isolated from Heliopsis longipes as well as the synthesized analogue compounds N-isobutyl-feruloylamide and N-isobutyl-dihydroferuloylamide produce their effects by activating TRPV1 receptor and they may have potential for the development of new analgesic drugs for the treatment of orofacial pain.
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Affiliation(s)
- Vianey de la Rosa-Lugo
- Centro de Investigaciones Químicas, IICBA, Universidad Autónoma del Estado de Morelos, Cuernavaca, Morelos, México
| | - Macdiel Acevedo-Quiroz
- Centro de Investigaciones Químicas, IICBA, Universidad Autónoma del Estado de Morelos, Cuernavaca, Morelos, México
| | - Myrna Déciga-Campos
- Sección de Estudios de Posgrado e Investigación, Escuela Superior de Medicina, Instituto Politécnico Nacional, Ciudad de México, México
| | - María Yolanda Rios
- Centro de Investigaciones Químicas, IICBA, Universidad Autónoma del Estado de Morelos, Cuernavaca, Morelos, México
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16
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Ann J, Sun W, Zhou X, Jung A, Baek J, Lee S, Kim C, Yoon S, Hong S, Choi S, Turcios NA, Herold BKA, Esch TE, Lewin NE, Abramovitz A, Pearce LV, Blumberg PM, Lee J. Discovery of N-(3-fluoro-4-methylsulfonamidomethylphenyl)urea as a potent TRPV1 antagonistic template. Bioorg Med Chem Lett 2016; 26:3603-7. [PMID: 27317643 PMCID: PMC6957248 DOI: 10.1016/j.bmcl.2016.06.010] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2016] [Revised: 06/02/2016] [Accepted: 06/06/2016] [Indexed: 12/21/2022]
Abstract
A series of homologous analogues of prototype antagonist 1 and its urea surrogate were investigated as hTRPV1 ligands. Through one-carbon elongation in the respective pharmacophoric regions, N-(3-fluoro-4-methylsulfonamidomethylphenyl)urea was identified as a novel and potent TRPV1 antagonistic template. Its representative compound 27 showed a potency comparable to that of lead compound 1. Docking analysis of compound 27 in our hTRPV1 homology model indicated that its binding mode was similar with that of 1S.
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Affiliation(s)
- Jihyae Ann
- Laboratory of Medicinal Chemistry, Research Institute of Pharmaceutical Sciences, College of Pharmacy, Seoul National University, Seoul 151-742, Republic of Korea
| | - Wei Sun
- Shenyang Pharmaceutical University, Shenyang 110016, China
| | - Xing Zhou
- Hainan Institute of Materia Medica, Haikou 570311, China
| | - Aeran Jung
- Laboratory of Medicinal Chemistry, Research Institute of Pharmaceutical Sciences, College of Pharmacy, Seoul National University, Seoul 151-742, Republic of Korea
| | - Jisoo Baek
- Laboratory of Medicinal Chemistry, Research Institute of Pharmaceutical Sciences, College of Pharmacy, Seoul National University, Seoul 151-742, Republic of Korea
| | - Sunho Lee
- Laboratory of Medicinal Chemistry, Research Institute of Pharmaceutical Sciences, College of Pharmacy, Seoul National University, Seoul 151-742, Republic of Korea
| | - Changhoon Kim
- Laboratory of Medicinal Chemistry, Research Institute of Pharmaceutical Sciences, College of Pharmacy, Seoul National University, Seoul 151-742, Republic of Korea
| | - Suyoung Yoon
- Laboratory of Medicinal Chemistry, Research Institute of Pharmaceutical Sciences, College of Pharmacy, Seoul National University, Seoul 151-742, Republic of Korea
| | - Sunhye Hong
- National Leading Research Laboratory of Molecular Modeling & Drug Design, College of Pharmacy, Graduate School of Pharmaceutical Sciences, Ewha Womans University, Seoul 120-750, Republic of Korea
| | - Sun Choi
- National Leading Research Laboratory of Molecular Modeling & Drug Design, College of Pharmacy, Graduate School of Pharmaceutical Sciences, Ewha Womans University, Seoul 120-750, Republic of Korea
| | - Noe A Turcios
- Laboratory of Cancer Biology and Genetics, Center for Cancer Research, National Cancer Institute, NIH, Bethesda, MD 20892, USA
| | - Brienna K A Herold
- Laboratory of Cancer Biology and Genetics, Center for Cancer Research, National Cancer Institute, NIH, Bethesda, MD 20892, USA
| | - Timothy E Esch
- Laboratory of Cancer Biology and Genetics, Center for Cancer Research, National Cancer Institute, NIH, Bethesda, MD 20892, USA
| | - Nancy E Lewin
- Laboratory of Cancer Biology and Genetics, Center for Cancer Research, National Cancer Institute, NIH, Bethesda, MD 20892, USA
| | - Adelle Abramovitz
- Laboratory of Cancer Biology and Genetics, Center for Cancer Research, National Cancer Institute, NIH, Bethesda, MD 20892, USA
| | - Larry V Pearce
- Laboratory of Cancer Biology and Genetics, Center for Cancer Research, National Cancer Institute, NIH, Bethesda, MD 20892, USA
| | - Peter M Blumberg
- Laboratory of Cancer Biology and Genetics, Center for Cancer Research, National Cancer Institute, NIH, Bethesda, MD 20892, USA
| | - Jeewoo Lee
- Laboratory of Medicinal Chemistry, Research Institute of Pharmaceutical Sciences, College of Pharmacy, Seoul National University, Seoul 151-742, Republic of Korea.
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17
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Gómez-Calvario V, Garduño-Ramírez ML, León-Rivera I, Rios MY. (1) H and (13) C NMR data on natural and synthetic capsaicinoids. MAGNETIC RESONANCE IN CHEMISTRY : MRC 2016; 54:268-290. [PMID: 26626418 DOI: 10.1002/mrc.4382] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/23/2015] [Revised: 10/04/2015] [Accepted: 10/13/2015] [Indexed: 06/05/2023]
Abstract
Capsaicinoids are the compounds responsible for the pungency of chili peppers. These substances have attracted the attention of many research groups in recent decades because of their antinociceptive, analgesic, anti-inflammatory, and anti-obesity properties, among others. There are nearly 160 capsaicinoids reported in the literature. Approximately 25 of them are natural products, while the rest are synthetic or semi-synthetic products. A large amount of NMR data for the capsaicinoids is dispersed throughout literature. Therefore, there is a need to organize all this NMR data in a systematic and orderly way. This review summarizes the (1) H and (13) C NMR data on 159 natural and synthetic capsaicinoids, with a brief discussion of some typical and relevant aspects of these NMR data. Copyright © 2015 John Wiley & Sons, Ltd.
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Affiliation(s)
- Víctor Gómez-Calvario
- Centro de Investigaciones Químicas, IICBA, Universidad Autónoma del Estado de Morelos, Avenida Universidad 1001, Col. Chamilpa, 62209, Cuernavaca, Morelos, Mexico
| | - María Luisa Garduño-Ramírez
- Centro de Investigaciones Químicas, IICBA, Universidad Autónoma del Estado de Morelos, Avenida Universidad 1001, Col. Chamilpa, 62209, Cuernavaca, Morelos, Mexico
| | - Ismael León-Rivera
- Centro de Investigaciones Químicas, IICBA, Universidad Autónoma del Estado de Morelos, Avenida Universidad 1001, Col. Chamilpa, 62209, Cuernavaca, Morelos, Mexico
| | - María Yolanda Rios
- Centro de Investigaciones Químicas, IICBA, Universidad Autónoma del Estado de Morelos, Avenida Universidad 1001, Col. Chamilpa, 62209, Cuernavaca, Morelos, Mexico
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18
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Ann J, Ki Y, Yoon S, Kim MS, Lee JU, Kim C, Lee S, Jung A, Baek J, Hong S, Choi S, Pearce LV, Esch TE, Turcios NA, Lewin NE, Ogunjirin AE, Herold BKA, McCall AK, Blumberg PM, Lee J. 2-Sulfonamidopyridine C-region analogs of 2-(3-fluoro-4-methylsulfonamidophenyl)propanamides as potent TRPV1 antagonists. Bioorg Med Chem 2016; 24:1231-40. [PMID: 26860926 PMCID: PMC6957252 DOI: 10.1016/j.bmc.2016.01.051] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2015] [Revised: 01/25/2016] [Accepted: 01/27/2016] [Indexed: 12/30/2022]
Abstract
A series of 2-sulfonamidopyridine C-region derivatives of 2-(3-fluoro-4-methylsulfonamidophenyl)propanamide were investigated as hTRPV1 ligands. Systematic modification on the 2-sulfonamido group provided highly potent TRPV1 antagonists. The N-benzyl phenylsulfonamide derivatives 12 and 23 in particular showed higher affinities than that of lead compound 1. Compound 12 exhibited strong analgesic activity in the formalin pain model. Docking analysis of its chiral S-form 12S in our hTRPV1 homology model indicated that its high affinity might arise from additional hydrophobic interactions not present in lead compound 1S.
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Affiliation(s)
- Jihyae Ann
- Laboratory of Medicinal Chemistry, Research Institute of Pharmaceutical Sciences, College of Pharmacy, Seoul National University, Seoul 151-742, Republic of Korea
| | - Yooran Ki
- Laboratory of Medicinal Chemistry, Research Institute of Pharmaceutical Sciences, College of Pharmacy, Seoul National University, Seoul 151-742, Republic of Korea
| | - Suyoung Yoon
- Laboratory of Medicinal Chemistry, Research Institute of Pharmaceutical Sciences, College of Pharmacy, Seoul National University, Seoul 151-742, Republic of Korea
| | - Myeong Seop Kim
- Laboratory of Medicinal Chemistry, Research Institute of Pharmaceutical Sciences, College of Pharmacy, Seoul National University, Seoul 151-742, Republic of Korea
| | - Jung-Un Lee
- Laboratory of Medicinal Chemistry, Research Institute of Pharmaceutical Sciences, College of Pharmacy, Seoul National University, Seoul 151-742, Republic of Korea
| | - Changhoon Kim
- Laboratory of Medicinal Chemistry, Research Institute of Pharmaceutical Sciences, College of Pharmacy, Seoul National University, Seoul 151-742, Republic of Korea
| | - Sunho Lee
- Laboratory of Medicinal Chemistry, Research Institute of Pharmaceutical Sciences, College of Pharmacy, Seoul National University, Seoul 151-742, Republic of Korea
| | - Aeran Jung
- Laboratory of Medicinal Chemistry, Research Institute of Pharmaceutical Sciences, College of Pharmacy, Seoul National University, Seoul 151-742, Republic of Korea
| | - Jisoo Baek
- Laboratory of Medicinal Chemistry, Research Institute of Pharmaceutical Sciences, College of Pharmacy, Seoul National University, Seoul 151-742, Republic of Korea
| | - Sunhye Hong
- National Leading Research Laboratory of Molecular Modeling & Drug Design, College of Pharmacy, Graduate School of Pharmaceutical Sciences, Ewha Womans University, Seoul 120-750, Republic of Korea
| | - Sun Choi
- National Leading Research Laboratory of Molecular Modeling & Drug Design, College of Pharmacy, Graduate School of Pharmaceutical Sciences, Ewha Womans University, Seoul 120-750, Republic of Korea
| | - Larry V Pearce
- Laboratory of Cancer Biology and Genetics, Center for Cancer Research, National Cancer Institute, NIH, Bethesda, MD 20892, USA
| | - Timothy E Esch
- Laboratory of Cancer Biology and Genetics, Center for Cancer Research, National Cancer Institute, NIH, Bethesda, MD 20892, USA
| | - Noe A Turcios
- Laboratory of Cancer Biology and Genetics, Center for Cancer Research, National Cancer Institute, NIH, Bethesda, MD 20892, USA
| | - Nancy E Lewin
- Laboratory of Cancer Biology and Genetics, Center for Cancer Research, National Cancer Institute, NIH, Bethesda, MD 20892, USA
| | - Adebowale E Ogunjirin
- Laboratory of Cancer Biology and Genetics, Center for Cancer Research, National Cancer Institute, NIH, Bethesda, MD 20892, USA
| | - Brienna K A Herold
- Laboratory of Cancer Biology and Genetics, Center for Cancer Research, National Cancer Institute, NIH, Bethesda, MD 20892, USA
| | - Anna K McCall
- Laboratory of Cancer Biology and Genetics, Center for Cancer Research, National Cancer Institute, NIH, Bethesda, MD 20892, USA
| | - Peter M Blumberg
- Laboratory of Cancer Biology and Genetics, Center for Cancer Research, National Cancer Institute, NIH, Bethesda, MD 20892, USA
| | - Jeewoo Lee
- Laboratory of Medicinal Chemistry, Research Institute of Pharmaceutical Sciences, College of Pharmacy, Seoul National University, Seoul 151-742, Republic of Korea.
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19
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The Effect of Capsaicin Derivatives on Tight-Junction Integrity and Permeability of Madin-Darby Canine Kidney Cells. J Pharm Sci 2016; 105:630-638. [PMID: 26869424 DOI: 10.1016/j.xphs.2015.10.017] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2015] [Revised: 10/16/2015] [Accepted: 10/19/2015] [Indexed: 12/14/2022]
Abstract
Capsaicin is known to interfere with tight junctions (TJs) of epithelial cells and therefore to enhance paracellular permeability of poorly absorbable drugs. However, due to its low water solubility, pungency, and cytotoxicity, its pharmacologic use is limited. In this study, we investigated the effect of capsaicin derivatives of synthetic (e.g., 10-hydroxy-N-(4-hydroxy-3-methoxybenzyl)decanamide, etc.) and natural (olvanil and dihydrocapsaicin) origin on Madin-Darby Canine Kidney-C7 cells. Impedance spectroscopy was used to determine the transepithelial electrical resistance and the capacitance. Permeability assays with fluorescein isothiocyanate-dextran were carried out to evaluate the impact on cell permeability. The results show that lipophilicity could play an important role for the interference with TJ and that the mechanism is independent from the ion channel TRPV-1 and hence on the flux of calcium into the cells. In summary, we synthesized 4 derivatives of capsaicin of lower lipophilicity and compared their properties with other well-known vanilloids. We show that these compounds are able to enhance the permeability of a hydrophilic macromolecule, by opening the TJ for a shorter time than capsaicin. This behavior is dependent on the lipophilicity of the molecule. Understanding of these phenomena may lead to better control of administration of therapeutic molecules.
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20
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Ann J, Jung A, Kim MY, Kim HM, Ryu H, Kim S, Kang DW, Hong S, Cui M, Choi S, Blumberg PM, Frank-Foltyn R, Bahrenberg G, Stockhausen H, Christoph T, Lee J. Structure activity relationships of benzyl C-region analogs of 2-(3-fluoro-4-methylsulfonamidophenyl)propanamides as potent TRPV1 antagonists. Bioorg Med Chem 2015; 23:6844-54. [PMID: 26474664 DOI: 10.1016/j.bmc.2015.10.001] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2015] [Revised: 09/30/2015] [Accepted: 10/01/2015] [Indexed: 01/15/2023]
Abstract
A series of 2-substituted 4-(trifluoromethyl)benzyl C-region analogs of 2-(3-fluoro-4-methylsulfonamidophenyl)propanamides were investigated for hTRPV1 antagonism. The analysis indicated that the phenyl C-region derivatives exhibited better antagonism than those of the corresponding pyridine surrogates for most of the series examined. Among the phenyl C-region derivatives, the two best compounds 43 and 44S antagonized capsaicin selectively relative to their antagonism of other activators and showed excellent potencies with K(i(CAP))=0.3 nM. These two compounds blocked capsaicin-induced hypothermia, consistent with TRPV1 as their site of action, and they demonstrated promising analgesic activities in a neuropathic pain model without hyperthermia. The docking study of 44S in our hTRPV1 homology model indicated that its binding mode was similar with that of its pyridine surrogate in the A- and B-regions but displayed a flipped configuration in the C-region.
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Affiliation(s)
- Jihyae Ann
- Laboratory of Medicinal Chemistry, Research Institute of Pharmaceutical Sciences, College of Pharmacy, Seoul National University, Seoul 151-742, Republic of Korea
| | - Aeran Jung
- Laboratory of Medicinal Chemistry, Research Institute of Pharmaceutical Sciences, College of Pharmacy, Seoul National University, Seoul 151-742, Republic of Korea
| | - Mi-Yeon Kim
- Laboratory of Medicinal Chemistry, Research Institute of Pharmaceutical Sciences, College of Pharmacy, Seoul National University, Seoul 151-742, Republic of Korea
| | - Hyuk-Min Kim
- Laboratory of Medicinal Chemistry, Research Institute of Pharmaceutical Sciences, College of Pharmacy, Seoul National University, Seoul 151-742, Republic of Korea
| | - HyungChul Ryu
- J2H Biotech, Ansan-si, Gyeonggi-do, Republic of Korea
| | - Sunjoo Kim
- J2H Biotech, Ansan-si, Gyeonggi-do, Republic of Korea
| | - Dong Wook Kang
- Department of Pharmaceutical Science and Technology, College of Health and Medical Science, Catholic University of Deagu, Gyeongsan-si, Gyeongsangbuk-do 712-702, Republic of Korea
| | - Sunhye Hong
- National Leading Research Laboratory of Molecular Modeling & Drug Design, College of Pharmacy, Graduate School of Pharmaceutical Sciences, and Global Top 5 Research Program, Ewha Womans University, Seoul 120-750, Republic of Korea
| | - Minghua Cui
- National Leading Research Laboratory of Molecular Modeling & Drug Design, College of Pharmacy, Graduate School of Pharmaceutical Sciences, and Global Top 5 Research Program, Ewha Womans University, Seoul 120-750, Republic of Korea
| | - Sun Choi
- National Leading Research Laboratory of Molecular Modeling & Drug Design, College of Pharmacy, Graduate School of Pharmaceutical Sciences, and Global Top 5 Research Program, Ewha Womans University, Seoul 120-750, Republic of Korea
| | - Peter M Blumberg
- Laboratory of Cancer Biology and Genetics, Center for Cancer Research, National Cancer Institute, NIH, Bethesda, MD 20892, USA
| | | | | | | | | | - Jeewoo Lee
- Laboratory of Medicinal Chemistry, Research Institute of Pharmaceutical Sciences, College of Pharmacy, Seoul National University, Seoul 151-742, Republic of Korea.
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21
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Ferreira AK, Tavares MT, Pasqualoto KFM, de Azevedo RA, Teixeira SF, Ferreira-Junior WA, Bertin AM, de-Sá-Junior PL, Barbuto JAM, Figueiredo CR, Cury Y, Damião MCFCB, Parise-Filho R. RPF151, a novel capsaicin-like analogue: in vitro studies and in vivo preclinical antitumor evaluation in a breast cancer model. Tumour Biol 2015; 36:7251-67. [DOI: 10.1007/s13277-015-3441-z] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2014] [Accepted: 02/11/2015] [Indexed: 12/01/2022] Open
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22
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Horváth K, Boros M, Bagoly T, Sándor V, Kilár F, Kemény A, Helyes Z, Szolcsányi J, Pintér E. Analgesic topical capsaicinoid therapy increases somatostatin-like immunoreactivity in the human plasma. Neuropeptides 2014; 48:371-8. [PMID: 25455106 DOI: 10.1016/j.npep.2014.10.001] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/28/2014] [Revised: 10/02/2014] [Accepted: 10/07/2014] [Indexed: 01/26/2023]
Abstract
The aim of the present study was to evaluate the therapeutic potential of local capsaicinoid (EMSPOMA(®) cream) treatment on chronic low back pain in patients with degenerative spine diseases and to investigate the possible mechanism of action of the therapy. The qualitative and quantitative analyses of capsaicinoids in EMSPOMA(®) cream were performed by liquid chromatography-tandem mass spectrometry (LC-MS/MS). In the clinical study 20 patients with degenerative spine diseases were involved in a self-controlled examination. During the 21 day therapy they received 30 min daily treatment with capsaicinoid (EMSPOMA(®)) cream to the lumbar region of the back. The pain (VASs, Oswestry Disability Index) and the mobility of the lumbar region of the spine (Schober's, Domján's L and R test) were detected at baseline and at the end of the 1st, 2nd and 3rd weeks. The plasma level of somatostatin-like immunoreactivity (SST-LI) was measured by radioimmunoassay (RIA) before and after the treatment on the first and the last day of the therapy. Nonivamide (0.01%) was identified as the only capsaicinoid molecule in the cream. In the clinical study the 21 day local nonivamide treatment reduced the pain sensation. Oswestry Disability Index decreased from 39 ± 3.9% to 32.5 ± 4.4%. VASs showed 37.29%-59.51% improvement. In the plasma level of SST-LI threefold elevation was observed after the first nonivamide treatment. We conclude that nonivamide treatment exerts analgesic action in chronic low back pain and causes the release of the antinociceptive and anti-inflammatory neuropeptide somatostatin which may play pivotal role in the pain-relieving effect.
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Affiliation(s)
- Katalin Horváth
- Zsigmondy Vilmos Harkány Medicinal Spa Hospital, 1 Zsigmondy Street, Harkány 7815, Hungary
| | - Melinda Boros
- Department of Pharmacology and Pharmacotherapy, University of Pécs, 12 Szigeti Street, Pécs 7624, Hungary
| | - Teréz Bagoly
- Department of Pharmacology and Pharmacotherapy, University of Pécs, 12 Szigeti Street, Pécs 7624, Hungary
| | - Viktor Sándor
- MTA-PTE Molecular Interactions in Separation Science Research Group, 12 Szigeti Street, Pécs 7624, Hungary; Szentágothai Research Center, University of Pécs, 20 Ifjúság Street, Pécs 7624, Hungary
| | - Ferenc Kilár
- Department of Bioanalysis, University of Pécs, 12 Szigeti Street, Pécs 7624, Hungary; Szentágothai Research Center, University of Pécs, 20 Ifjúság Street, Pécs 7624, Hungary
| | - Agnes Kemény
- Department of Pharmacology and Pharmacotherapy, University of Pécs, 12 Szigeti Street, Pécs 7624, Hungary; Szentágothai Research Center, University of Pécs, 20 Ifjúság Street, Pécs 7624, Hungary
| | - Zsuzsanna Helyes
- Department of Pharmacology and Pharmacotherapy, University of Pécs, 12 Szigeti Street, Pécs 7624, Hungary; Szentágothai Research Center, University of Pécs, 20 Ifjúság Street, Pécs 7624, Hungary
| | - János Szolcsányi
- Department of Pharmacology and Pharmacotherapy, University of Pécs, 12 Szigeti Street, Pécs 7624, Hungary
| | - Erika Pintér
- Department of Pharmacology and Pharmacotherapy, University of Pécs, 12 Szigeti Street, Pécs 7624, Hungary; Szentágothai Research Center, University of Pécs, 20 Ifjúság Street, Pécs 7624, Hungary.
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23
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Quantitative structure–activity relationship (QSAR) studies as strategic approach in drug discovery. Med Chem Res 2014. [DOI: 10.1007/s00044-014-1072-3] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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24
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Steinberg X, Lespay-Rebolledo C, Brauchi S. A structural view of ligand-dependent activation in thermoTRP channels. Front Physiol 2014; 5:171. [PMID: 24847275 PMCID: PMC4017155 DOI: 10.3389/fphys.2014.00171] [Citation(s) in RCA: 47] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2014] [Accepted: 04/11/2014] [Indexed: 11/26/2022] Open
Abstract
Transient Receptor Potential (TRP) proteins are a large family of ion channels, grouped into seven sub-families. Although great advances have been made regarding the activation and modulation of TRP channel activity, detailed molecular mechanisms governing TRP channel gating are still needed. Sensitive to electric, chemical, mechanical, and thermal cues, TRP channels are tightly associated with the detection and integration of sensory input, emerging as a model to study the polymodal activation of ion channel proteins. Among TRP channels, the temperature-activated kind constitute a subgroup by itself, formed by Vanilloid receptors 1–4, Melastatin receptors 2, 4, 5, and 8, TRPC5, and TRPA1. Some of the so-called “thermoTRP” channels participate in the detection of noxious stimuli making them an interesting pharmacological target for the treatment of pain. However, the poor specificity of the compounds available in the market represents an important obstacle to overcome. Understanding the molecular mechanics underlying ligand-dependent modulation of TRP channels may help with the rational design of novel synthetic analgesics. The present review focuses on the structural basis of ligand-dependent activation of TRPV1 and TRPM8 channels. Special attention is drawn to the dissection of ligand-binding sites within TRPV1, PIP2-dependent modulation of TRP channels, and the structure of natural and synthetic ligands.
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Affiliation(s)
- Ximena Steinberg
- Faculty of Medicine, Institute of Physiology, Universidad Austral de Chile Campus Isla Teja, Valdivia, Chile ; Faculty of Sciences, Graduate School, Universidad Austral de Chile Campus Isla Teja, Valdivia, Chile
| | - Carolyne Lespay-Rebolledo
- Faculty of Chemical and Pharmaceutical Sciences, Graduate School, Universidad de Chile Santiago, Chile
| | - Sebastian Brauchi
- Faculty of Medicine, Institute of Physiology, Universidad Austral de Chile Campus Isla Teja, Valdivia, Chile
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25
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Constrained TRPV1 agonists synthesized via silver-mediated intramolecular azo-methine ylide cycloaddition of α-iminoamides. Bioorg Med Chem Lett 2014; 24:963-8. [PMID: 24412067 DOI: 10.1016/j.bmcl.2013.12.061] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2013] [Revised: 12/12/2013] [Accepted: 12/16/2013] [Indexed: 12/16/2022]
Abstract
As part of an effort to identify agonists of TRPV1, a peripheral sensory nerve ion channel, high throughput screening of the NIH Small Molecule Repository (SMR) collection identified MLS002174161, a pentacyclic benzodiazepine. A synthesis effort was initiated that ultimately afforded racemic seco analogs 12 of the SMR compound via a silver mediated intramolecular [3+2] cycloaddition of an azo-methine ylide generated from α-iminoamides 11. The cycloaddition set four contiguous stereocenters and, in some cases, also spontaneously afforded imides 13 from 12. The synthesis of compounds 12, the features that facilitated the conversion of 12-13, and their partial agonist activity against TRPV1 are discussed.
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27
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Díaz-Laviada I, Rodríguez-Henche N. The potential antitumor effects of capsaicin. PROGRESS IN DRUG RESEARCH. FORTSCHRITTE DER ARZNEIMITTELFORSCHUNG. PROGRES DES RECHERCHES PHARMACEUTIQUES 2014; 68:181-208. [PMID: 24941670 DOI: 10.1007/978-3-0348-0828-6_8] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Capsaicin, one of the major pungent ingredients found in red peppers, has been recently demonstrated to induce apoptosis in many types of malignant cell lines including colon adenocarcinoma, pancreatic cancer, hepatocellular carcinoma, prostate cancer, breast cancer, and many others. The mechanism whereby capsaicin induces apoptosis in cancer cells is not completely elucidated but involves intracellular calcium increase, reactive oxygen species generation, disruption of mitochondrial membrane transition potential, and activation of transcription factors such as NFkappaB and STATS. Recently, a role for the AMP-dependent kinase (AMPK) and autophagy pathways in capsaicin-triggered cell death has been proposed. In addition, capsaicin shows antitumor activity in vivo by reducing the growth of many tumors induced in mice. In this chapter, we report the last advances performed in the antitumor activity of capsaicin and review the main signaling pathways involved.
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Adams MJ, Almaghrabi SY, Ahuja KDK, Geraghty DP. Vanilloid-Like Agents: Potential Therapeutic Targeting of Platelets? Drug Dev Res 2013. [DOI: 10.1002/ddr.21102] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Murray J. Adams
- School of Human Life Sciences; University of Tasmania; Bag 1320 Launceston; Tasmania; 7250; Australia
| | - Safa Y. Almaghrabi
- School of Human Life Sciences; University of Tasmania; Bag 1320 Launceston; Tasmania; 7250; Australia
| | - Kiran D. K. Ahuja
- School of Human Life Sciences; University of Tasmania; Bag 1320 Launceston; Tasmania; 7250; Australia
| | - Dominic P. Geraghty
- School of Human Life Sciences; University of Tasmania; Bag 1320 Launceston; Tasmania; 7250; Australia
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Rebolledo CL, Sotelo-Hitschfeld P, Brauchi S, Olavarría MZ. Design and synthesis of conformationally restricted capsaicin analogues based in the 1, 3, 4-thiadiazole heterocycle reveal a novel family of transient receptor potential vanilloid 1 (TRPV1) antagonists. Eur J Med Chem 2013; 66:193-203. [PMID: 23796768 DOI: 10.1016/j.ejmech.2013.05.001] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2012] [Revised: 04/12/2013] [Accepted: 05/01/2013] [Indexed: 11/26/2022]
Abstract
4-hydroxy-3-methoxybenzaldehyde was used as starting material to obtain a number of 1, 3, 4-thiadiazole alkylamide derivatives. The pharmacological properties of these conformationally restricted capsaicin analogues were evaluated on HEK-293T cells transiently expressing TRPV1 receptor. By means of a highthroughput calcium imaging assay we find that 1, 3, 4-thiadiazoles (compounds 8-15) act as potent antagonists of the capsaicin receptor, inhibiting both, the capsaicin- and temperature-dependent activation. Docking studies suggested a different binding orientation on the vanilloid binding site when compared with capsaicin analogues, such as 5-iodononivamide. Overall, our studies suggest that 1, 3, 4-thiadiazoles interact with capsaicin's binding region of the receptor, although using a different set of interactions within the vanilloid binding pocket.
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Affiliation(s)
- Carolyne Lespay Rebolledo
- Department of Organic Chemistry, Faculty of Chemical Sciences, University of Concepcion, Edmundo Larenas 160C, Concepción 1430000, Chile
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de-Sá-Júnior PL, Pasqualoto KFM, Ferreira AK, Tavares MT, Damião MCFCB, de Azevedo RA, Câmara DAD, Pereira A, de Souza DM, Parise Filho R. RPF101, a new capsaicin-like analogue, disrupts the microtubule network accompanied by arrest in the G2/M phase, inducing apoptosis and mitotic catastrophe in the MCF-7 breast cancer cells. Toxicol Appl Pharmacol 2013; 266:385-98. [DOI: 10.1016/j.taap.2012.11.029] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2012] [Revised: 11/05/2012] [Accepted: 11/19/2012] [Indexed: 10/27/2022]
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Besidski Y, Brown W, Bylund J, Dabrowski M, Dautrey S, Harter M, Horoszok L, Hu Y, Johnson D, Johnstone S, Jones P, Leclerc S, Kolmodin K, Kers I, Labarre M, Labrecque D, Laird J, Lundström T, Martino J, Maudet M, Munro A, Nylöf M, Penwell A, Rotticci D, Slaitas A, Sundgren-Andersson A, Svensson M, Terp G, Villanueva H, Walpole C, Zemribo R, Griffin AM. Potent and orally efficacious benzothiazole amides as TRPV1 antagonists. Bioorg Med Chem Lett 2012; 22:6205-11. [DOI: 10.1016/j.bmcl.2012.08.018] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2012] [Revised: 07/23/2012] [Accepted: 08/01/2012] [Indexed: 10/28/2022]
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Weiser T, Roufogalis B, Chrubasik S. Comparison of the effects of pelargonic acid vanillylamide and capsaicin on human vanilloid receptors. Phytother Res 2012; 27:1048-53. [PMID: 22961689 DOI: 10.1002/ptr.4817] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2012] [Revised: 07/17/2012] [Accepted: 07/23/2012] [Indexed: 11/12/2022]
Abstract
Pelargonic acid vanillylamide is like capsaicin a natural capsaicinoid from chili peppers and commonly used in food additives to create a hot sensation, even in self-defense pepper sprays and as an alternative to capsaicin in medical products for topical treatment of pain. Although the chemical structures of both compounds are similar, preclinical data suggest that capsaicin is the more potent compound. We therefore performed voltage-clamp recordings using cells transfected with the human vanilloid receptor TRPV1 in order to assess the responses of pelargonic acid vanillylamide and capsaicin at the receptor level. We provide evidence that at the molecular target TRPV1, the concentration-response curves, kinetics of current activation, as well as inhibition by the competitive antagonist capsazepine were not significantly different between the two capsaicinoids. We suggest that the different effects of the two capsaicinoids observed in previous studies may rather be due to different physicochemical or pharmacokinetic properties than to different pharmacological profiles at the receptor level.
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Affiliation(s)
- Thomas Weiser
- Boehringer Ingelheim Pharma GmbH & Co. KG, Ingelheim am Rhein, Germany
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Blumberg PM, Pearce LV, Lee J. TRPV1 activation is not an all-or-none event: TRPV1 partial agonism/antagonism and its regulatory modulation. Curr Top Med Chem 2012; 11:2151-8. [PMID: 21671879 DOI: 10.2174/156802611796904825] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2010] [Accepted: 10/18/2010] [Indexed: 12/26/2022]
Abstract
TRPV1 has emerged as a promising therapeutic target for pain as well as a broad range of other conditions such as asthma or urge incontinence. The identification of resiniferatoxin as an ultrapotent ligand partially able to dissect the acute activation of TRPV1 from subsequent desensitization and the subsequent intense efforts in medicinal chemistry have revealed that TRPV1 affords a dramatic landscape of opportunities for pharmacological manipulation. While agonism and antagonism have represented the primary directions for drug development, the pharmacological complexity of TRPV1 affords additional opportunities. Partial agonism/partial antagonism, its modulation by signaling pathways, variable desensitization, and slow kinetics of action can all be exploited through drug design.
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Affiliation(s)
- Peter M Blumberg
- Laboratory of Cancer Biology and Genetics, Center for Cancer Research, National Cancer Institute, Bethesda, MD 20892-4255, USA.
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Synthesis and biological evaluation of [6]-gingerol analogues as transient receptor potential channel TRPV1 and TRPA1 modulators. Bioorg Med Chem Lett 2011; 22:1674-7. [PMID: 22257892 DOI: 10.1016/j.bmcl.2011.12.113] [Citation(s) in RCA: 57] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2011] [Revised: 12/22/2011] [Accepted: 12/23/2011] [Indexed: 01/08/2023]
Abstract
In order to explore the structural determinants for the TRPV1 and TRPA1 agonist properties of gingerols, a series of nineteen analogues (1b-5) of racemic [6]-gingerol (1a) was synthesized and tested on TRPV1 and TRPA1 channels. The exploration of the structure-activity relationships, by modulating the three pharmacophoric regions of [6]-gingerol, led to the identification of some selective TRPV1 agonists/desensitizers of TRPV1 channels (3a, 3f, and 4) and of some full TRPA1 antagonists (2c, 2d, 3b, and 3d).
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Activity-dependent targeting of TRPV1 with a pore-permeating capsaicin analog. Proc Natl Acad Sci U S A 2011; 108:8497-502. [PMID: 21536874 DOI: 10.1073/pnas.1018550108] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
The capsaicin receptor TRPV1 is the principal transduction channel for nociception. Excessive TRPV1 activation causes pathological pain. Ideal pain mangement requires selective inhibition of hyperactive pain-sensing neurons, but sparing normal nociception. We sought to determine whether it is possible to use activity-dependent TRPV1 agonists to identify nerves with excessive TRPV1 activity, as well as exploit the TRPV1 pore to deliver charged anesthetics for neuronal silencing. We synthesized a series of permanently charged capsaicinoids and found that one, cap-ET, efficaciously evoked TRPV1-dependent entry of Ca(2+) or the large cationic dye YO-PRO-1 comparably to capsaicin, but far smaller electrical currents. Cap-ET-induced YO-PRO-1 transport required permeation of both the agonist and the dye through the TRPV1 pore and could be enhanced by kinase activation or oxidative covalent modification. Moreover, cap-ET reduced capsaicin-induced currents by a voltage-dependent block of the pore. A low dose of cap-ET elicited entry of permanently charged Na(+) channel blockers to effectively suppress Na(+) currents in sensory neurons presensitized with oxidative chemicals. These results implicate therapeutic potential of these unique TRPV1 agonists exhibiting activity-dependent ion transport but of minimal pain-producing risks.
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Lee JH, Lee Y, Ryu H, Kang DW, Lee J, Lazar J, Pearce LV, Pavlyukovets VA, Blumberg PM, Choi S. Structural insights into transient receptor potential vanilloid type 1 (TRPV1) from homology modeling, flexible docking, and mutational studies. J Comput Aided Mol Des 2011; 25:317-27. [PMID: 21448716 DOI: 10.1007/s10822-011-9421-5] [Citation(s) in RCA: 60] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2010] [Accepted: 03/16/2011] [Indexed: 11/29/2022]
Abstract
The transient receptor potential vanilloid subtype 1 (TRPV1) is a non-selective cation channel composed of four monomers with six transmembrane helices (TM1-TM6). TRPV1 is found in the central and peripheral nervous system, and it is an important therapeutic target for pain relief. We describe here the construction of a tetrameric homology model of rat TRPV1 (rTRPV1). We experimentally evaluated by mutational analysis the contribution of residues of rTRPV1 contributing to ligand binding by the prototypical TRPV1 agonists, capsaicin and resiniferatoxin (RTX). We then performed docking analysis using our homology model. The docking results with capsaicin and RTX showed that our homology model was reliable, affording good agreement with our mutation data. Additionally, the binding mode of a simplified RTX (sRTX) ligand as predicted by the modeling agreed well with those of capsaicin and RTX, accounting for the high binding affinity of the sRTX ligand for TRPV1. Through the homology modeling, docking and mutational studies, we obtained important insights into the ligand-receptor interactions at the molecular level which should prove of value in the design of novel TRPV1 ligands.
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Affiliation(s)
- Jin Hee Lee
- College of Pharmacy, Division of Life and Pharmaceutical Sciences, Ewha Womans University, Seoul, Korea
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Thomas KC, Ethirajan M, Shahrokh K, Sun H, Lee J, Cheatham TE, Yost GS, Reilly CA. Structure-activity relationship of capsaicin analogs and transient receptor potential vanilloid 1-mediated human lung epithelial cell toxicity. J Pharmacol Exp Ther 2011; 337:400-10. [PMID: 21343315 DOI: 10.1124/jpet.110.178491] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022] Open
Abstract
Activation of intracellular transient receptor potential vanilloid-1 (TRPV1) in human lung cells causes endoplasmic reticulum (ER) stress, increased expression of proapoptotic GADD153 (growth arrest- and DNA damage-inducible transcript 3), and cytotoxicity. However, in cells with low TRPV1 expression, cell death is not inhibited by TRPV1 antagonists, despite preventing GADD153 induction. In this study, chemical variants of the capsaicin analog nonivamide were synthesized and used to probe the relationship between TRPV1 receptor binding, ER calcium release, GADD153 expression, and cell death in TRPV1-overexpressing BEAS-2B, normal BEAS-2B, and primary normal human bronchial epithelial lung cells. Modification of the 3-methoxy-4-hydroxybenzylamide vanilloid ring pharmacophore of nonivamide reduced the potency of the analogs and rendered several analogs mildly inhibitory. Correlation analysis of analog-induced calcium flux, GADD153 induction, and cytotoxicity revealed a direct relationship for all three endpoints in all three lung cell types for nonivamide and N-(3,4-dihydroxybenzyl)nonanamide. However, the N-(3,4-dihydroxybenzyl)nonanamide analog also produced cytotoxicity through redox cycling/reactive oxygen species formation, shown by inhibition of cell death by N-acetylcysteine. Molecular modeling of binding interactions between the analogs and TRPV1 agreed with data for reduced potency of the analogs, and only nonivamide was predicted to form a "productive" ligand-receptor complex. This study provides vital information on the molecular interactions of capsaicinoids with TRPV1 and substantiates TRPV1-mediated ER stress as a conserved mechanism of lung cell death by prototypical TRPV1 agonists.
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Affiliation(s)
- Karen C Thomas
- Department of Pharmacology and Toxicology, University of Utah, Salt Lake City, UT 84112, USA
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Beaudry F, Ross A, Lema PP, Vachon P. Pharmacokinetics of vanillin and its effects on mechanical hypersensitivity in a rat model of neuropathic pain. Phytother Res 2010; 24:525-30. [PMID: 19655294 DOI: 10.1002/ptr.2975] [Citation(s) in RCA: 47] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
The analgesic effects of vanillin on neuropathic pain was evaluated using thermal sensitivity and mechanical allodynia using the sciatic nerve constriction model (n = 30 rats). To determine the pharmacokinetics of vanillin, rats (n = 6/administration route) received either 20 or 100 mg/kg of vanillin i.v. and p.o., respectively. For the pharmacodynamic study, baseline levels for hyperalgesia and allodynia were taken for 5 days prior to surgery. Following surgery each group (n = 6 rats/group) received either vanillin (50 mg/kg or 100 mg/kg), morphine (2 mg/kg or 6 mg/kg) or the vehicle only. Pharmacokinetic results following p.o. administrations are C(max) 290.24 ng/mL, T(max) 4 h, relative clearance 62.17 L/h/kg and T(1/2) 10.3 h. The bioavailability is 7.6%. Mechanical allodynia was decreased on treatment days 1, 2, 3, 5 (p < 0.003) and not on day 4 (p > 0.02) with 50 mg/kg vanillin, whereas at 100 mg/kg p.o. a decrease was noted only on days 7 and 8 (p < 0.003). No effect on hyperalgesia was seen following vanillin administration. In conclusion, vanillin is bioavailable and seems to have an alleviating effect on mechanical allodynia, and not on hyperalgesia, when evaluated with a chronic constriction nerve injury rat model of neuropathic pain.
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Affiliation(s)
- Francis Beaudry
- Department of Veterinary Biomedicine, Faculty of Veterinary Medicine, University of Montreal, Saint-Hyacinthe, QC, Canada
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Non-CB1, Non-CB2 Receptors for Endocannabinoids, Plant Cannabinoids, and Synthetic Cannabimimetics: Focus on G-protein-coupled Receptors and Transient Receptor Potential Channels. J Neuroimmune Pharmacol 2009; 5:103-21. [DOI: 10.1007/s11481-009-9177-z] [Citation(s) in RCA: 152] [Impact Index Per Article: 10.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2009] [Accepted: 09/24/2009] [Indexed: 12/24/2022]
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40
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Liu Y, Verducci JS. Review of statistical analyses in drug discovery and chemogenomics. Stat Anal Data Min 2009. [DOI: 10.1002/sam.10041] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Mazourek M, Pujar A, Borovsky Y, Paran I, Mueller L, Jahn MM. A dynamic interface for capsaicinoid systems biology. PLANT PHYSIOLOGY 2009; 150:1806-21. [PMID: 19553373 PMCID: PMC2719146 DOI: 10.1104/pp.109.136549] [Citation(s) in RCA: 90] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/02/2009] [Accepted: 06/13/2009] [Indexed: 05/19/2023]
Abstract
Capsaicinoids are the pungent alkaloids that give hot peppers (Capsicum spp.) their spiciness. While capsaicinoids are relatively simple molecules, much is unknown about their biosynthesis, which spans diverse metabolisms of essential amino acids, phenylpropanoids, benzenoids, and fatty acids. Pepper is not a model organism, but it has access to the resources developed in model plants through comparative approaches. To aid research in this system, we have implemented a comprehensive model of capsaicinoid biosynthesis and made it publicly available within the SolCyc database at the SOL Genomics Network (http://www.sgn.cornell.edu). As a preliminary test of this model, and to build its value as a resource, targeted transcripts were cloned as candidates for nearly all of the structural genes for capsaicinoid biosynthesis. In support of the role of these transcripts in capsaicinoid biosynthesis beyond correct spatial and temporal expression, their predicted subcellular localizations were compared against the biosynthetic model and experimentally determined compartmentalization in Arabidopsis (Arabidopsis thaliana). To enable their use in a positional candidate gene approach in the Solanaceae, these genes were genetically mapped in pepper. These data were integrated into the SOL Genomics Network, a clade-oriented database that incorporates community annotation of genes, enzymes, phenotypes, mutants, and genomic loci. Here, we describe the creation and integration of these resources as a holistic and dynamic model of the characteristic specialized metabolism of pepper.
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Affiliation(s)
- Michael Mazourek
- Department of Plant Breeding and Genetics, Cornell University, Ithaca, New York 14853, USA.
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Interdisciplinary review for correlation between the plant origin capsaicinoids, non-steroidal antiinflammatory drugs, gastrointestinal mucosal damage and prevention in animals and human beings. Inflammopharmacology 2009; 17:113-50. [PMID: 19557311 DOI: 10.1007/s10787-009-0002-3] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2008] [Accepted: 11/24/2008] [Indexed: 01/31/2023]
Abstract
BACKGROUND The plant origin capsaicinoids (capsaicin, dihydrocapsaicin, norcapsaicin, dihydrocapsaicin, homocapsaicin, homodihydrocapsaicin) are well known and used as nutritional additive agents in the every day nutritional practice from the last 9,500 years; however, we had have a very little scientifically based knowledge on their chemistry, physiology and pharmacology in animal observations, and in humans up to the mid-twentieth century. Our knowledge about their chemistry, physiology, pharmacology entered to be scientifically based evidence from the year 1980, dominantly in animal observations. The human observations with capsaicin (capsaicinoids), in terms of good clinical practice, have been started only in the last 10-year period (from 1997) in randomized, prospective, multiclinical studies. The name of "capsaicin" used only in the physiological and pharmacological research both in animal experiments and in human observation. The "capsaicin" (as a "chemically" used natural compound) modifies the so-called capsaicin-sensitive afferent nerves depending on their applied doses. AIMS The specific action of capsaicin (capsaicinoids) on sensory afferent nerves modifying gastrointestinal (GI) function (under very specific conditions) offers a possibility for the production of an orally applicable drug or for other drug combinations, which can be used in the human medical therapy. The production of new drug is based on the critical interdisciplinary review of the results obtained with capsaicinoids. MATERIALS AND METHODS This paper gives an interdisciplinary and critical overview on the chemical, physiological, pharmacological and toxicological actions of the natural origin capsaicinoids (from the point of drug production) under conditions of acute, subacute and chronic administration in animal experiments and human observations, toxicology, pharmacokinetics). This interdisciplinary review covers the following main chapters: (1) physiological and pharmacological research tool by capsaicin in the animals and human beings, (2) capsaicin research in animals (including the acute, subacute toxicology and chronic toxicology metabolism, genotoxicology), (3) capsaicin observation with capsaicin in human beings. CONCLUSION (1) The capsaicin used in the physiological and pharmacological observations (in animals and human beings) chemically represents different chemical compounds, which can be obtained from the plants (paprika, chilli, etc.), (2) capsaicinoids are able to modify the capsaicin-sensitive afferent nerves, which have principle roles in the defence of different organs (including the gastrointestinal tract [against the different chemicals, heat, strech, chemical millieu-induced damage], (3) the application of capsaicin (capsaicinoids) can be repeated for the beneficial effects on the gastrointestinal tract as those in animal experiments. After this interdisciplinary and critical review, this paper demonstrates the well-planned research pathways of the discoveries of capsaicinoids from plant chemistry, via physiology, pharmacology and toxicology in animal experiments and human observations.
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Therapeutic potential of vanilloid receptor TRPV1 agonists and antagonists as analgesics: Recent advances and setbacks. ACTA ACUST UNITED AC 2009; 60:267-77. [DOI: 10.1016/j.brainresrev.2008.12.006] [Citation(s) in RCA: 262] [Impact Index Per Article: 17.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/29/2008] [Indexed: 11/23/2022]
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Winkler M, Moraux T, Khairy HA, Scott RH, Slawin AMZ, O'Hagan D. Synthesis and Vanilloid Receptor (TRPV1) Activity of the Enantiomers of α-Fluorinated Capsaicin. Chembiochem 2009; 10:823-8. [DOI: 10.1002/cbic.200800709] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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45
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Menozzi-Smarrito C, Riera CE, Munari C, Le Coutre J, Robert F. Synthesis and evaluation of new alkylamides derived from alpha-hydroxysanshool, the pungent molecule in szechuan pepper. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2009; 57:1982-1989. [PMID: 19209861 DOI: 10.1021/jf803067r] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
Szechuan pepper is widely used in Asia as a spice for its pleasant pungent and tingling sensations, produced by natural alkylamides called sanshools. alpha-Hydroxysanshool, the main alkylamide found in the pericarp of the fruit, stimulates sensory neurons innervating the mouth by targeting two chemosensitive members of the transient receptor potential (TRP) channels, TRPV1 and TRPA1. As it was previously found that configuration of the unsaturations in the alpha-hydroxysanshool alkyl chain is required for TRPA1 but not TRPV1 selectivity, this study aimed at obtaining more potent and selective TRPA1 agonists using alpha-hydroxysanshool as a starting material. This paper reports the preparation of new alkylamides derived from sanshool and their efficacy in stimulating TRPA1 and TRPV1 receptors. The data provide knowledge of the main sanshool chemical functionalities required for TRP channel activation, but they also evidence new selective and potent TRPA1 agonists based on alpha-hydroxysanshool.
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Van Ryssen MP, Avlonitis N, Giniatullin R, McDougall C, Carr JL, Stanton-Humphreys MN, Borgström ELA, Brown CTA, Fayuk D, Surin A, Niittykoski M, Khiroug L, Conway SJ. Synthesis, photolysis studies and in vitro photorelease of caged TRPV1 agonists and antagonists. Org Biomol Chem 2009; 7:4695-707. [DOI: 10.1039/b914981c] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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47
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Conway SJ. TRPing the switch on pain: an introduction to the chemistry and biology of capsaicin and TRPV1. Chem Soc Rev 2008; 37:1530-45. [DOI: 10.1039/b610226n] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Di Marzo V, Bisogno T, De Petrocellis L. Endocannabinoids and related compounds: walking back and forth between plant natural products and animal physiology. ACTA ACUST UNITED AC 2007; 14:741-56. [PMID: 17656311 DOI: 10.1016/j.chembiol.2007.05.014] [Citation(s) in RCA: 92] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2007] [Revised: 05/30/2007] [Accepted: 05/30/2007] [Indexed: 11/17/2022]
Abstract
Cannabis sativa has been known, used, and misused by mankind for centuries, and yet only over the last two decades has research stemming from the chemical constituents specific to this plant, the cannabinoids, started to provide fundamental insights into animal physiology and pathology, resulting in the development of new therapeutics. The discovery of the endocannabinoid system, and its targeting with two new pharmaceutical preparations now on the market in several countries, represent the most recent example of how studies on medicinal plants and on the mechanism of their biological effects can reveal, through a chain of breakthroughs, new systems of endogenous signals and physiological phenomena that can become the source of novel strategies for unmet therapeutic challenges.
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Affiliation(s)
- Vincenzo Di Marzo
- Endocannabinoid Research Group, Institute of Biomolecular Chemistry, Consiglio Nazionale delle Ricerche, Via Campi Flegrei 34, 80078 Pozzuoli (NA), Italy.
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Castillo E, López-González I, De Regil-Hernández R, Reyes-Duarte D, Sánchez-Herrera D, López-Munguía A, Darszon A. Enzymatic synthesis of capsaicin analogs and their effect on the T-type Ca2+ channels. Biochem Biophys Res Commun 2007; 356:424-30. [PMID: 17362879 DOI: 10.1016/j.bbrc.2007.02.144] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2007] [Accepted: 02/26/2007] [Indexed: 02/07/2023]
Abstract
Capsaicin (Cap) and its analogs (CAPanalogs) have diverse effects in sensory neurons including analgesia, implying they modulate other cellular targets besides the TRPV1 Cap receptor. Since Cap and CAPanalogs are not largely available and their chemical synthesis is cumbersome, they have been obtained through a direct lipase-catalyzed reaction. Capsiate, the ester CAPanalog, was synthesized using a novel enzymatic transacylation one-pot strategy. Five different CAPanalogs were synthesized by amidation in 2-methyl-2-butanol with higher yields than previously reported. Voltage-dependent Ca(2+) channels (Ca(v)s) are among the main Ca(2+) entry paths into cells. They are classified as high-voltage-activated Ca(2+) channels (HVA) and low-voltage-activated Ca(2+) channels (LVA) constituted only by T-type channels. Though HVA Ca(v)s are Cap sensitive, it is not known if capsaicinoids inhibit LVA Ca(v)s which participate in the primary sensory neuron pain pathway. Here we first report that Cap, dihydrocapsaicin, N-VAMC(8), N-VAMC(9), and N-VAMC(10) can directly and partially reversibly inhibit T-type Ca(v)s, whereas olvanil, capsiate, and vanillylamine cannot. The Cap inhibition of T-type Ca(v)s was independent of TRPV1 activation.
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Affiliation(s)
- Edmundo Castillo
- Departamento de Ingeniería Celular y Biocatálisis, Instituto de Biotecnología, Universidad Nacional Autónoma de México, Cuernavaca, CP 62210, Mexico
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Reilly CA, Yost GS. Metabolism of capsaicinoids by P450 enzymes: a review of recent findings on reaction mechanisms, bio-activation, and detoxification processes. Drug Metab Rev 2007; 38:685-706. [PMID: 17145696 PMCID: PMC2390586 DOI: 10.1080/03602530600959557] [Citation(s) in RCA: 65] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Capsaicinoids are botanical irritants present in chili peppers. Chili pepper extracts and capsaicinoids are common dietary constituents and important pharmaceutical agents. Use of these substances in modern consumer products and medicinal preparations occurs worldwide. Capsaicinoids are the principals of pepper spray self-defense weapons and several over-the-counter pain treatments as well as the active component of many dietary supplements. Capsaicinoids interact with the capsaicin receptor (a.k.a., VR1 or TRPV1) to produce acute pain and cough as well as long-term analgesia. Capsaicinoids are also toxic to many cells via TRPV1-dependent and independent mechanisms. Chemical modifications to capsaicinoids by P450 enzymes decreases their potency at TRPV1 and reduces the pharmacological and toxicological phenomena associated with TRPV1 stimulation. Metabolism of capsaicinoids by P450 enzymes also produces reactive electrophiles capable of modifying biological macromolecules. This review highlights data describing specific mechanisms by which P450 enzymes convert the capsaicinoids to novel products and explores the relationship between capsaicinoid metabolism and its effects on capsaicinoid pharmacology and toxicology.
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Affiliation(s)
- Christopher A Reilly
- Department of Pharmacology and Toxicology, University of Utah, Salt Lake City, Utah 84112, USA.
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