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Bui D, Li L, Yin T, Wang X, Gao S, You M, Singh R, Hu M. Pharmacokinetic and Metabolic Profiling of Key Active Components of Dietary Supplement Magnolia officinalis Extract for Prevention against Oral Carcinoma. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2020; 68:6576-6587. [PMID: 32348135 PMCID: PMC7604171 DOI: 10.1021/acs.jafc.0c01475] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/06/2023]
Abstract
Among the three key active components (KACs) of Magnolia officinalis bark extract (ME), 4-O-methylhonokiol and honokiol showed higher antiproliferation activities than magnolol in the oral squamous cancer cell lines (Cal-27, SCC-9, and SCC-4). Oral bioavailabilities of ME-KACs were poor (<0.2%) in C57BL/6 mice primarily due to their extensive first-pass phase II metabolism and poor solubilities. High plasma concentration of glucuronides upon oral administration and faster rate of glucuronidation by intestinal microsomes indicated intestine as one of the major metabolic organs for ME-KACs. Despite the increase in bioavailabilities of ME-KACs (∼8-10-fold) and decrease in AUC0-24 of glucuronides (∼10-fold) upon ME solubility enhancement, systemic exposure of ME-KACs failed to improve meaningfully. In conclusion, we propose a quality-controlled and chemically defined ME mixture, containing an optimized ratio of three KACs, delivered locally in the oral cavity as the most promising strategy for ME use as an oral cancer chemopreventive dietary supplement.
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Affiliation(s)
- Dinh Bui
- Department of Pharmacological and Pharmaceutical Sciences, College of Pharmacy, University of Houston, Houston, Texas
| | - Li Li
- Department of Pharmacological and Pharmaceutical Sciences, College of Pharmacy, University of Houston, Houston, Texas
| | - Taijun Yin
- Department of Pharmacological and Pharmaceutical Sciences, College of Pharmacy, University of Houston, Houston, Texas
| | - Xinli Wang
- Department of Pharmacological and Pharmaceutical Sciences, College of Pharmacy, University of Houston, Houston, Texas
- Fujian Medical University Union Hospital, Gulou District, Fuzhou City, Fujian, China
| | - Song Gao
- Department of Pharmaceutical Sciences, Texas Southern University, Houston, Texas
| | - Ming You
- Department of Pharmacology and Toxicology, Medical College of Wisconsin, Milwaukee, Wisconsin
| | - Rashim Singh
- Department of Pharmacological and Pharmaceutical Sciences, College of Pharmacy, University of Houston, Houston, Texas
- Corresponding Authors: [Tel: (832) 842-8320; Fax: (713) 743-1884; ] [Tel: (832) 518-9110; ]
| | - Ming Hu
- Department of Pharmacological and Pharmaceutical Sciences, College of Pharmacy, University of Houston, Houston, Texas
- Corresponding Authors: [Tel: (832) 842-8320; Fax: (713) 743-1884; ] [Tel: (832) 518-9110; ]
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Yuan Y, Subedi L, Lim D, Jung JK, Kim SY, Seo SY. Synthesis and anti-neuroinflammatory activity of N-heterocyclic analogs based on natural biphenyl-neolignan honokiol. Bioorg Med Chem Lett 2018; 29:329-333. [PMID: 30472026 DOI: 10.1016/j.bmcl.2018.11.014] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2018] [Revised: 11/02/2018] [Accepted: 11/08/2018] [Indexed: 10/27/2022]
Abstract
Novel isoxazole and pyrazole analogs based on natural biphenyl-neolignan honokiol were synthesized and evaluated for their inhibitory activities against nitric oxide production in lipopolysaccharide-activated BV-2 microglial cells. The isoxazole skeleton was constructed via nitrile oxide cycloaddition from oxime 3 and pyrazole was generated by condensation of 4-chromone and alkylhydrazine. Among the analogs, 13b and 14a showed stronger inhibitory activities with IC50 values of 8.9 and 1.2 µM, respectively, than honokiol.
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Affiliation(s)
- Yue Yuan
- College of Pharmacy, and Gachon Institute of Pharmaceutical Sciences, Gachon University, Incheon 21936, Republic of Korea
| | - Lalita Subedi
- College of Pharmacy, and Gachon Institute of Pharmaceutical Sciences, Gachon University, Incheon 21936, Republic of Korea
| | - Daesung Lim
- College of Pharmacy, and Gachon Institute of Pharmaceutical Sciences, Gachon University, Incheon 21936, Republic of Korea
| | - Jae-Kyung Jung
- College of Pharmacy, Chungbuk National University, Cheongju, Chungbuk 28644, Republic of Korea
| | - Sun Yeou Kim
- College of Pharmacy, and Gachon Institute of Pharmaceutical Sciences, Gachon University, Incheon 21936, Republic of Korea.
| | - Seung-Yong Seo
- College of Pharmacy, and Gachon Institute of Pharmaceutical Sciences, Gachon University, Incheon 21936, Republic of Korea.
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Sun W, Kim TS, Choi NS, Seo SY. Synthesis of 1,2,3-Triazole and Pyrazole Analogues as Bioisosteres of Biphenyl-Neolignans. B KOREAN CHEM SOC 2017. [DOI: 10.1002/bkcs.11352] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Affiliation(s)
- Wei Sun
- College of Pharmacy; Gachon University; Incheon 21936 Republic of Korea
| | - Taek-Soo Kim
- College of Pharmacy; Gachon University; Incheon 21936 Republic of Korea
| | - Nam Song Choi
- College of Interdisciplinary & Creative Studies; Konyang University; Nonsan 32992 Republic of Korea
| | - Seung-Yong Seo
- College of Pharmacy; Gachon University; Incheon 21936 Republic of Korea
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Patsenker E, Chicca A, Petrucci V, Moghadamrad S, de Gottardi A, Hampe J, Gertsch J, Semmo N, Stickel F. 4-O'-methylhonokiol protects from alcohol/carbon tetrachloride-induced liver injury in mice. J Mol Med (Berl) 2017; 95:1077-1089. [PMID: 28689299 DOI: 10.1007/s00109-017-1556-y] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2017] [Revised: 04/18/2017] [Accepted: 06/01/2017] [Indexed: 02/06/2023]
Abstract
Alcoholic liver disease (ALD) is a leading cause of liver cirrhosis, liver cancer, and related mortality. The endocannabinoid system contributes to the development of chronic liver diseases, where cannabinoid receptor 2 (CB2) has been shown to have a protecting role. Thus, here, we investigated how CB2 agonism by 4'-O-methylhonokiol (MHK), a biphenyl from Magnolia grandiflora, affects chronic alcohol-induced liver fibrosis and damage in mice. A combination of alcohol (10% vol/vol) and CCl4 (1 ml/kg) was applied to C57BL/6 mice for 5 weeks. MHK (5 mg/kg) was administered daily, and liver damage assessed by serum AST and ALT levels, histology, gene, and protein expression. Endocannabinoids (ECs) and related lipid derivatives were measured by liquid chromatography and mass spectrometry (LC-MS) in liver tissues. In vitro, MHK was studied in TGFβ1-activated hepatic stellate cells (HSC). MHK treatment alleviated hepatic fibrosis, paralleled by induced expression of matrix metalloproteinases (MMP)-2, -3, -9, and -13, and downregulation of CB1 mRNA. Necrotic lesions and hepatic inflammation were moderately improved, while IL-10 mRNA increased and IFNγ, Mcl-1, JNK1, and RIPK1 normalized by MHK. Hepatic anandamide (AEA) and related N-acetylethanolamines (NAEs) were elevated in MHK group, whereas fatty acid synthase and diacylglycerol O-acyltransferase 2 expression reduced. In vitro, MHK prevented HSC activation and induced apoptosis via induction of bak1 and bcl-2. To conclude, MHK revealed hepatoprotective effects during alcohol-induced liver damage through the induction of MMPs, AEA, and NAEs and prevention of HSC activation, indicating MHK as a potent therapeutic for liver fibrosis and ALD. KEY MESSAGES Methylhonokiol improves liver damage and survival. Methylhonokiol reduces hepatic fibrosis and necroinflammation. Methylhonokiol prevents myofibroblast activation and induces apoptosis. Methylhonokiol upregulates endocannabinoids and related N-acylethanolamines. Methylhonokiol contributes to lipid hydrolysis via PPARα/γ.
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Affiliation(s)
- Eleonora Patsenker
- Department of Gastroenterology and Hepatology, University Hospital Zürich, Sternwartstr. 14, 8097, Zurich, Switzerland.
- Department of Clinical Research, Department of Hepatology, University of Bern, Bern, Switzerland.
| | - Andrea Chicca
- Institute of Biochemistry and Molecular Medicine, University of Bern, Bern, Switzerland
| | - Vanessa Petrucci
- Institute of Biochemistry and Molecular Medicine, University of Bern, Bern, Switzerland
| | - Sheida Moghadamrad
- Department of Clinical Research, Department of Hepatology, University of Bern, Bern, Switzerland
| | - Andrea de Gottardi
- Department of Clinical Research, Department of Hepatology, University of Bern, Bern, Switzerland
- Department of Visceral Surgery and Medicine, Department of Hepatology, Inselspital, University Hospital of Bern, Bern, Switzerland
| | - Jochen Hampe
- Medical Department 1, University Hospital Dresden, Technical University of Dresden, Dresden, Germany
| | - Jürg Gertsch
- Institute of Biochemistry and Molecular Medicine, University of Bern, Bern, Switzerland
| | - Nasser Semmo
- Department of Clinical Research, Department of Hepatology, University of Bern, Bern, Switzerland
- Department of Visceral Surgery and Medicine, Department of Hepatology, Inselspital, University Hospital of Bern, Bern, Switzerland
| | - Felix Stickel
- Department of Gastroenterology and Hepatology, University Hospital Zürich, Sternwartstr. 14, 8097, Zurich, Switzerland
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Kim Y, Andrés Salazar Hernández M, Herrema H, Delibasi T, Park SW. The role of BRD7 in embryo development and glucose metabolism. J Cell Mol Med 2017; 20:1561-70. [PMID: 27444544 PMCID: PMC4956945 DOI: 10.1111/jcmm.12907] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2016] [Accepted: 05/17/2016] [Indexed: 11/29/2022] Open
Abstract
Bromodomain‐containing protein 7 (BRD7) is a member of bromodomain‐containing protein family and its function has been implicated in several diseases. We have previously shown that BRD7 plays a role in metabolic processes. However, the effect of BRD7 deficiency in glucose metabolism and its role in in vivo have not been fully revealed. Here, we report the essential role of BRD7 during embryo development. Mice homozygous for BRD7 led to embryonic lethality at mid‐gestation. Homozygous BRD7 knockout (KO) mice showed retardation in development, and eventually all BRD7 KO embryos died in utero prior to E16.5. Partial knockdown of Brd7 gene displayed mild changes in glucose metabolism.
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Affiliation(s)
- Yoo Kim
- Division of Endocrinology, Boston Children's Hospital, Harvard Medical School, Boston, MA, USA
| | | | - Hilde Herrema
- Division of Endocrinology, Boston Children's Hospital, Harvard Medical School, Boston, MA, USA
| | - Tuncay Delibasi
- Department of Internal Medicine, School of Medicine, Kastamonu, Hacettepe University, Ankara, Turkey
| | - Sang Won Park
- Division of Endocrinology, Boston Children's Hospital, Harvard Medical School, Boston, MA, USA
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Comparative metabolism of honokiol in mouse, rat, dog, monkey, and human hepatocytes. Arch Pharm Res 2016; 39:516-530. [PMID: 26983827 DOI: 10.1007/s12272-016-0731-y] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2016] [Accepted: 03/08/2016] [Indexed: 10/22/2022]
Abstract
Honokiol has antitumor, antioxidative, anti-inflammatory, and antithrombotic effects. Here we aimed to identify the metabolic profile of honokiol in mouse, rat, dog, monkey, and human hepatocytes and to characterize the enzymes responsible for the glucuronidation and sulfation of honokiol. Honokiol had a high hepatic extraction ratio in all five species, indicating that it was extensively metabolized. A total of 32 metabolites, including 17 common and 15 different metabolites, produced via glucuronidation, sulfation, and oxidation of honokiol allyl groups were tentatively identified using liquid chromatography-high resolution quadrupole Orbitrap mass spectrometry. Glucuronidation of honokiol to M8 (honokiol-4-glucuronide) and M9 (honokiol-2'-glucuronide) was the predominant metabolic pathway in hepatocytes of all five species; however, interspecies differences between 4- and 2'-glucuronidation of honokiol were observed. UGT1A1, 1A8, 1A9, 2B15, and 2B17 played major roles in M8 formation, whereas UGT1A7 and 1A9 played major roles in M9 formation. Human cDNA-expressed SULT1C4 played a major role in M10 formation (honokiol-2'-sulfate), whereas SULT1A1*1, 1A1*2, and 1A2 played major roles in M11 formation (honokiol-4-sulfate). In conclusion, honokiol metabolism showed interspecies differences.
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Chhonker YS, Chandasana H, Mukkavilli R, Prasad YD, Laxman TS, Vangala S, Bhatta RS. Assessment ofin vitrometabolic stability, plasma protein binding, and pharmacokinetics ofE- andZ-guggulsterone in rat. Drug Test Anal 2015; 8:966-75. [DOI: 10.1002/dta.1885] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2015] [Revised: 08/24/2015] [Accepted: 08/24/2015] [Indexed: 11/10/2022]
Affiliation(s)
- Yashpal S. Chhonker
- Pharmacokinetics & Metabolism Division; CSIR-Central Drug Research Institute; Lucknow India
- Academy of Scientific and Innovative Research (AcSIR); New Delhi India
| | - Hardik Chandasana
- Pharmacokinetics & Metabolism Division; CSIR-Central Drug Research Institute; Lucknow India
- Academy of Scientific and Innovative Research (AcSIR); New Delhi India
| | - Rao Mukkavilli
- Advinus Therapeutics Limited; Bengaluru Karnataka India
- Manipal University; Manipal Karnataka India
| | - Yarra Durga Prasad
- Pharmacokinetics & Metabolism Division; CSIR-Central Drug Research Institute; Lucknow India
| | - Tulsankar Sachin Laxman
- Pharmacokinetics & Metabolism Division; CSIR-Central Drug Research Institute; Lucknow India
- Academy of Scientific and Innovative Research (AcSIR); New Delhi India
| | | | - Rabi S. Bhatta
- Pharmacokinetics & Metabolism Division; CSIR-Central Drug Research Institute; Lucknow India
- Academy of Scientific and Innovative Research (AcSIR); New Delhi India
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Cho JH, Lee RH, Jeon YJ, Shin JC, Park SM, Choi NJ, Seo KS, Yoon G, Cho SS, Kim KH, Cho JJ, Cho YS, Kim DH, Hong JT, Lee TH, Park HJ, Jung S, Seo JM, Chen H, Dong Z, Chae JI, Shim JH. Role of transcription factor Sp1 in the 4-O-methylhonokiol-mediated apoptotic effect on oral squamous cancer cells and xenograft. Int J Biochem Cell Biol 2015; 64:287-97. [PMID: 25982202 DOI: 10.1016/j.biocel.2015.05.007] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2014] [Revised: 04/14/2015] [Accepted: 05/07/2015] [Indexed: 11/18/2022]
Abstract
Recently, biphenolic components derived from the Magnolia family have been studied for anti-cancer, anti-stress, and anti-inflammatory pharmacological effects. However, the pharmacological mechanism of action of 4-O-methylhonokiol (MH) is not clear in oral cancer. The aim of this study was to investigate the role of MH in apoptosis and its molecular mechanism in oral squamous cell carcinoma (OSCC) cell lines, HN22 and HSC4, as well as tumor xenografts. Here, we demonstrated that MH decreased cell growth and induced apoptosis in HN22 and HSC4 cells through the regulation of specificity protein 1 (Sp1). We employed several experimental techniques such as MTS assay, DAPI staining, PI staining, Annexin-V/7-ADD staining, RT-PCR, western blot analysis, immunocytochemistry, immunohistochemistry, TUNEL assay and in vivo xenograft model analysis. MH inhibited Sp1 protein expression and reduced Sp1 protein levels via both proteasome-dependent protein degradation and inhibition of protein synthesis in HN22 and HSC4 cells; MH did not alter Sp1 mRNA levels. We found that MH directly binds Sp1 by Sepharose 4B pull-down assay and molecular modeling. In addition, treatment with MH or knocking down Sp1 expression suppressed oral cancer cell colony formation. Moreover, MH treatment effectively inhibited tumor growth and Sp1 levels in BALB/c nude mice bearing HN22 cell xenografts. These results indicated that MH inhibited cell growth, colony formation and also induced apoptosis via Sp1 suppression in OSCC cells and xenograft tumors. Thus, MH is a potent anti-cancer drug candidate for oral cancer.
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Affiliation(s)
- Jin Hyoung Cho
- Department of Oral Pharmacology, School of Dentistry and Institute of Dental Bioscience, BK21 plus, Chonbuk National University, Jeonju, Republic of Korea
| | - Ra Ham Lee
- Department of Oral Pharmacology, School of Dentistry and Institute of Dental Bioscience, BK21 plus, Chonbuk National University, Jeonju, Republic of Korea
| | - Young-Joo Jeon
- Department of Oral Pharmacology, School of Dentistry and Institute of Dental Bioscience, BK21 plus, Chonbuk National University, Jeonju, Republic of Korea
| | - Jae-Cheon Shin
- Pohang Center for Evaluation of Biomaterials, Pohang, Gyeongbuk, Republic of Korea
| | - Seon-Min Park
- Pohang Center for Evaluation of Biomaterials, Pohang, Gyeongbuk, Republic of Korea
| | - Nag-Jin Choi
- Department of Animal Science, College of Agricultural and Life Science, Chonbuk National University, Jeonju, Republic of Korea
| | - Kang Seok Seo
- Department of Animal Science and Technology, Sunchon National University, Suncheon, Republic of Korea
| | - Goo Yoon
- Department of Pharmacy, College of Pharmacy, Mokpo National University, Muan-gun, Republic of Korea
| | - Seung-Sik Cho
- Department of Pharmacy, College of Pharmacy, Mokpo National University, Muan-gun, Republic of Korea
| | - Ka Hwi Kim
- Department of Pharmacy, College of Pharmacy, Mokpo National University, Muan-gun, Republic of Korea
| | - Jung Jae Cho
- Department of Pharmacy, College of Pharmacy, Mokpo National University, Muan-gun, Republic of Korea
| | - Young Sik Cho
- Department of Pharmacy, Keimyung University, Daegu, Republic of Korea
| | - Dae Hwan Kim
- College of Pharmacy, Medical Research Center, Chungbuk National University, Cheongju, Republic of Korea
| | - Jin Tae Hong
- Department of Oral Biochemistry, Dental Science Research Institute and the BK21 Project, Medical Research Center for Biomineralization Disorders, School of Dentistry, Chonnam National University, Gwangju, Republic of Korea
| | - Tae-Hoon Lee
- Department of Oral Biochemistry, Dental Science Research Institute and the BK21 Project, Medical Research Center for Biomineralization Disorders, School of Dentistry, Chonnam National University, Gwangju, Republic of Korea
| | - Hong Ju Park
- Department of Oral and Maxillofacial Surgery, School of Dentistry, Chonnam National University, Gwangju, Republic of Korea
| | - Seunggon Jung
- Department of Oral and Maxillofacial Surgery, Chonnam National University Hwasun Hospital, Gwangju, Republic of Korea
| | - Jae-Min Seo
- Department of Prosthodontics, School of Dentistry, Chonbuk National University, Jeonju, Republic of Korea
| | - Hanyong Chen
- Hormel Institute, University of Minnesota, Austin, MN, USA
| | - Zigang Dong
- Hormel Institute, University of Minnesota, Austin, MN, USA
| | - Jung-Il Chae
- Department of Oral Pharmacology, School of Dentistry and Institute of Dental Bioscience, BK21 plus, Chonbuk National University, Jeonju, Republic of Korea.
| | - Jung-Hyun Shim
- Department of Pharmacy, College of Pharmacy, Mokpo National University, Muan-gun, Republic of Korea.
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Chicca A, Gachet MS, Petrucci V, Schuehly W, Charles RP, Gertsch J. 4'-O-methylhonokiol increases levels of 2-arachidonoyl glycerol in mouse brain via selective inhibition of its COX-2-mediated oxygenation. J Neuroinflammation 2015; 12:89. [PMID: 25962384 PMCID: PMC4490613 DOI: 10.1186/s12974-015-0307-7] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2015] [Accepted: 04/24/2015] [Indexed: 01/01/2023] Open
Abstract
BACKGROUND AND PURPOSE 4'-O-methylhonokiol (MH) is a natural product showing anti-inflammatory, anti-osteoclastogenic, and neuroprotective effects. MH was reported to modulate cannabinoid CB2 receptors as an inverse agonist for cAMP production and an agonist for intracellular [Ca2+]. It was recently shown that MH inhibits cAMP formation via CB2 receptors. In this study, the exact modulation of MH on CB2 receptor activity was elucidated and its endocannabinoid substrate-specific inhibition (SSI) of cyclooxygenase-2 (COX-2) and CNS bioavailability are described for the first time. METHODS CB2 receptor modulation ([35S]GTPγS, cAMP, and β-arrestin) by MH was measured in hCB2-transfected CHO-K1 cells and native conditions (HL60 cells and mouse spleen). The COX-2 SSI was investigated in RAW264.7 cells and in Swiss albino mice by targeted metabolomics using LC-MS/MS. RESULTS MH is a CB2 receptor agonist and a potent COX-2 SSI. It induced partial agonism in both the [35S]GTPγS binding and β-arrestin recruitment assays while being a full agonist in the cAMP pathway. MH selectively inhibited PGE2 glycerol ester formation (over PGE2) in RAW264.7 cells and significantly increased the levels of 2-AG in mouse brain in a dose-dependent manner (3 to 20 mg kg(-1)) without affecting other metabolites. After 7 h from intraperitoneal (i.p.) injection, MH was quantified in significant amounts in the brain (corresponding to 200 to 300 nM). CONCLUSIONS LC-MS/MS quantification shows that MH is bioavailable to the brain and under condition of inflammation exerts significant indirect effects on 2-AG levels. The biphenyl scaffold might serve as valuable source of dual CB2 receptor modulators and COX-2 SSIs as demonstrated by additional MH analogs that show similar effects. The combination of CB2 agonism and COX-2 SSI offers a yet unexplored polypharmacology with expected synergistic effects in neuroinflammatory diseases, thus providing a rationale for the diverse neuroprotective effects reported for MH in animal models.
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Affiliation(s)
- Andrea Chicca
- Institute of Biochemistry and Molecular Medicine, NCCR TransCure, University of Bern, Bühlstrasse 28, CH-3012, Bern, Switzerland.
| | - Maria Salomé Gachet
- Institute of Biochemistry and Molecular Medicine, NCCR TransCure, University of Bern, Bühlstrasse 28, CH-3012, Bern, Switzerland.
| | - Vanessa Petrucci
- Institute of Biochemistry and Molecular Medicine, NCCR TransCure, University of Bern, Bühlstrasse 28, CH-3012, Bern, Switzerland.
| | - Wolfgang Schuehly
- Institute of Zoology, Karl-Franzens-University Graz, Universitätsplatz 2, 8010, Graz, Austria.
| | - Roch-Philippe Charles
- Institute of Biochemistry and Molecular Medicine, NCCR TransCure, University of Bern, Bühlstrasse 28, CH-3012, Bern, Switzerland.
| | - Jürg Gertsch
- Institute of Biochemistry and Molecular Medicine, NCCR TransCure, University of Bern, Bühlstrasse 28, CH-3012, Bern, Switzerland.
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Jun-jun W, Xiao-lei M, Jing-ya C, Yong C. The Pharmacokinetics and Tissue Distribution of Honokiol and its Metabolites in Rats. Eur J Drug Metab Pharmacokinet 2015; 41:587-94. [DOI: 10.1007/s13318-015-0281-6] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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The magnolia bioactive constituent 4-O-methylhonokiol protects against high-fat diet-induced obesity and systemic insulin resistance in mice. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2014; 2014:965954. [PMID: 24991305 PMCID: PMC4060163 DOI: 10.1155/2014/965954] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/19/2014] [Accepted: 05/06/2014] [Indexed: 12/19/2022]
Abstract
Obesity is caused by a combination of both genetic and environmental risks. Disruption in energy balance is one of these risk factors. In the present study, the preventive effect on high-fat diet- (HFD-) induced obesity and insulin resistance in mice by Magnolia bioactive constituent 4-O-methylhonokiol (MH) was compared with Magnolia officinalis extract BL153. C57BL/6J mice were fed by normal diet or by HFD with gavage-administered vehicle, BL153, low-dose MH, and high-dose MH simultaneously for 24 weeks, respectively. Either MH or BL153 slightly inhibited body-weight gain of mice by HFD feeding although the food intake had no obvious difference. Body fat mass and the epididymal white adipose tissue weight were also mildly decreased by MH or BL153. Moreover, MH significantly lowered HFD-induced plasma triglyceride, cholesterol levels and activity of alanine transaminase (ALT), liver weight and hepatic triglyceride level, and ameliorated hepatic steatosis. BL153 only significantly reduced ALT and liver triglyceride level. Concurrently, low-dose MH improved HFD-induced hyperinsulinemia and insulin resistance. Furthermore, the infiltration of mast cells in adipose tissue was decreased in MH or in BL153 treatment. These results suggested that Magnolia bioactive constituent MH might exhibit potential benefits for HFD-induced obesity by improvement of lipid metabolism and insulin resistance.
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