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Woo HS, Im HJ, Kim JY, Lee MS, Kim DW. Mechanism of protein tyrosine phosphatase 1B inhibition by theaflavanoside IV isolated from methanolic extract of tea ( Camellia sinensis) seed shells. Nat Prod Res 2021; 36:3189-3192. [PMID: 34498977 DOI: 10.1080/14786419.2021.1952576] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Abstract
Camellia sinensis (tea) seeds have been identified as potential sources of nutraceutical compounds. In this study, caffeine and theaflavanoside IV were annotated as the most abundant phytochemicals in the seed shells of C. sinensis. Both compound displayed potent inhibitions against protein tyrosine phosphatase 1B (PTP1B) with IC50 values of 37.9 ± 3.5 and 8.7 ± 1.1 µM, respectively. In the kinetic study, caffeine inhibited PTP1B with mixed type I mode, which prefers to bind to free enzyme. Theaflavanoside IV showed competitive and reversible simple slow-binding inhibition [k3 = 0.1 µM-1·min-1, k4 = 0.002 min-1, Kiapp = 0.0002 µM]. This is the first report on PTP1B-inhibitory activity of these compounds and their action mechanisms. These results suggest their potential in the development of antidiabetic agents.
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Affiliation(s)
- Hyun Sim Woo
- Wild Plant Industrialization Research Division, Baekdudaegan National Arboretum, Bonghwa-gun, Gyeongsangbuk-do, Korea
| | - Hyeon Jeong Im
- Plant Propagation and Reproduction Division, National Arboretum Baekdudaegan, Bongwha-gun, Gyeongsangbuk-do, Korea
| | - Jeong Yoon Kim
- Department of Pharmaceutical Engineering, IALS, Gyeongsang National University, Jinju, Gyeongsangbuk-do, Korea
| | - Min-Sung Lee
- Wild Plant Industrialization Research Division, Baekdudaegan National Arboretum, Bonghwa-gun, Gyeongsangbuk-do, Korea
| | - Dae Wook Kim
- Wild Plant Industrialization Research Division, Baekdudaegan National Arboretum, Bonghwa-gun, Gyeongsangbuk-do, Korea
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Woo HS, Shin KC, Kim JY, Kim YS, Ban YJ, Oh YJ, Cho HJ, Oh DK, Kim DW. Bakkenolides and Caffeoylquinic Acids from the Aerial Portion of Petasites japonicus and Their Bacterial Neuraminidase Inhibition Ability. Biomolecules 2020; 10:biom10060888. [PMID: 32532086 PMCID: PMC7357027 DOI: 10.3390/biom10060888] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2020] [Revised: 06/03/2020] [Accepted: 06/08/2020] [Indexed: 01/01/2023] Open
Abstract
Petasites japonicus have been used since a long time in folk medicine to treat diseases including plague, pestilential fever, allergy, and inflammation in East Asia and European countries. Bioactive compounds that may prevent and treat infectious diseases are identified based on their ability to inhibit bacterial neuraminidase (NA). We aimed to isolate and identify bioactive compounds from leaves and stems of P. japonicas (PJA) and elucidate their mechanisms of NA inhibition. Key bioactive compounds of PJA responsible for NA inhibition were isolated using column chromatography, their chemical structures revealed using 1 H NMR, 13 C NMR, DEPT, and HMBC, and identified to be bakkenolide B (1), bakkenolide D (2), 1,5-di-O-caffeoylquinic acid (3), and 5-O-caffeoylquinic acid (4). Of these, 3 exhibited the most potent NA inhibitory activity (IC50 = 2.3 ± 0.4 μM). Enzyme kinetic studies revealed that 3 and 4 were competitive inhibitors, whereas 2 exhibited non-competitive inhibition. Furthermore, a molecular docking simulation revealed the binding affinity of these compounds to NA and their mechanism of inhibition. Negative-binding energies indicated high proximity of these compounds to the active site and allosteric sites of NA. Therefore, PJA has the potential to be further developed as an antibacterial agent for use against diseases associated with NA.
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Affiliation(s)
- Hyun Sim Woo
- Plant Resource Industry Division, Forest Plant Industry Department, Baekdudaegan National Arboretum, Bonghwa-gun 26209, Korea; (H.S.W.); (Y.-S.K.); (Y.J.O.); (H.J.C.)
| | - Kyung-Chul Shin
- Department of Bioscience and Biotechnology, Konkuk University, Gwangjin-gu, Seoul 05029, Korea; (K.-C.S.); (D.-K.O.)
| | - Jeong Yoon Kim
- Division of Applied Life Science, Gyeongsang National University, Jinju 52828, Korea; (J.Y.K.); (Y.J.B.)
| | - Yeong-Su Kim
- Plant Resource Industry Division, Forest Plant Industry Department, Baekdudaegan National Arboretum, Bonghwa-gun 26209, Korea; (H.S.W.); (Y.-S.K.); (Y.J.O.); (H.J.C.)
| | - Young Jun Ban
- Division of Applied Life Science, Gyeongsang National University, Jinju 52828, Korea; (J.Y.K.); (Y.J.B.)
| | - Yu Jin Oh
- Plant Resource Industry Division, Forest Plant Industry Department, Baekdudaegan National Arboretum, Bonghwa-gun 26209, Korea; (H.S.W.); (Y.-S.K.); (Y.J.O.); (H.J.C.)
| | - Hae Jin Cho
- Plant Resource Industry Division, Forest Plant Industry Department, Baekdudaegan National Arboretum, Bonghwa-gun 26209, Korea; (H.S.W.); (Y.-S.K.); (Y.J.O.); (H.J.C.)
| | - Deok-Kun Oh
- Department of Bioscience and Biotechnology, Konkuk University, Gwangjin-gu, Seoul 05029, Korea; (K.-C.S.); (D.-K.O.)
| | - Dae Wook Kim
- Plant Resource Industry Division, Forest Plant Industry Department, Baekdudaegan National Arboretum, Bonghwa-gun 26209, Korea; (H.S.W.); (Y.-S.K.); (Y.J.O.); (H.J.C.)
- Correspondence: ; Tel.: +82-54-679-2738; Fax: +82-54-679-0636
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Shin KC, Kim DW, Woo HS, Oh DK, Kim YS. Conversion of Glycosylated Platycoside E to Deapiose-Xylosylated Platycodin D by Cytolase PCL5. Int J Mol Sci 2020; 21:ijms21041207. [PMID: 32054089 PMCID: PMC7072768 DOI: 10.3390/ijms21041207] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2020] [Revised: 02/08/2020] [Accepted: 02/09/2020] [Indexed: 12/28/2022] Open
Abstract
Platycosides, the saponins abundant in Platycodi radix (the root of Platycodon grandiflorum), have diverse pharmacological activities and have been used as food supplements. Since deglycosylated saponins exhibit higher biological activity than glycosylated saponins, efforts are on to enzymatically convert glycosylated platycosides to deglycosylated platycosides; however, the lack of diversity and specificities of these enzymes has limited the kinds of platycosides that can be deglycosylated. In the present study, we examined the enzymatic conversion of platycosides and showed that Cytolase PCL5 completely converted platycoside E and polygalacin D3 into deapiose-xylosylated platycodin D and deapiose-xylosylated polygalacin D, respectively, which were identified by LC-MS analysis. The platycoside substrates were hydrolyzed through the following novel hydrolytic pathways: platycoside E → platycodin D3 → platycodin D → deapiosylated platycodin D → deapiose-xylosylated platycodin D; and polygalacin D3 → polygalacin D → deapiosylated polygalacin D → deapiose-xylosylated polygalacin D. Our results show that cytolast PCL5 may have a potential role in the development of biologically active platycosides that may be used for their diverse pharmacological activities.
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Affiliation(s)
- Kyung-Chul Shin
- Research Institute of Bioactive-Metabolome Network, Konkuk University, Seoul 05029, Korea; (K.-C.S.); (D.-K.O.)
| | - Dae Wook Kim
- Forest Plant Industry Department, Baekdudaegan National Arboretum, Bonghwa 36209, Korea; (D.W.K.); (H.S.W.)
| | - Hyun Sim Woo
- Forest Plant Industry Department, Baekdudaegan National Arboretum, Bonghwa 36209, Korea; (D.W.K.); (H.S.W.)
| | - Deok-Kun Oh
- Research Institute of Bioactive-Metabolome Network, Konkuk University, Seoul 05029, Korea; (K.-C.S.); (D.-K.O.)
- Department of Bioscience and Biotechnology, Konkuk University, Seoul 05029, Korea
| | - Yeong-Su Kim
- Forest Plant Industry Department, Baekdudaegan National Arboretum, Bonghwa 36209, Korea; (D.W.K.); (H.S.W.)
- Correspondence: ; Tel.: +82-54-679-2740; Fax: +82-54-679-0636
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Kim DW, Lee SM, Woo HS, Park JY, Ko BS, Heo JD, Ryu YB, Lee WS. Chemical constituents and anti-inflammatory activity of the aerial parts of Curcuma longa. J Funct Foods 2016. [DOI: 10.1016/j.jff.2016.08.026] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023] Open
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Affiliation(s)
- Dae Wook Kim
- Korea Institute of Oriental Medicine, KM Convergence Research Division, Daejeon, Republic of Korea and
| | - Hyun Sim Woo
- Division of Applied Life Science, Gyeongsang National University, Jinju, Republic of Korea
| | - Jeong Yoon Kim
- Division of Applied Life Science, Gyeongsang National University, Jinju, Republic of Korea
| | - Jin Ah Ryuk
- Korea Institute of Oriental Medicine, KM Convergence Research Division, Daejeon, Republic of Korea and
| | - Ki Hun Park
- Division of Applied Life Science, Gyeongsang National University, Jinju, Republic of Korea
| | - Byoung Seob Ko
- Korea Institute of Oriental Medicine, KM Convergence Research Division, Daejeon, Republic of Korea and
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Ryu HW, Jeong SH, Curtis-Long MJ, Jung S, Lee JW, Woo HS, Cho JK, Park KH. Inhibition effects of mangosenone F from Garcinia mangostana on melanin formation in B16F10 cells. J Agric Food Chem 2012; 60:8372-8378. [PMID: 22779928 DOI: 10.1021/jf3015987] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
Melanogenesis can be controlled by tyrosinase inhibition or by blocking the maturation processes of tyrosinase and its related proteins. Mangostenone F was isolated from the seedcases of Garcinia mangostana . Mangostenone F was shown to be inactive against tyrosinase (IC50 > 200 μM) but was a potent α-glucosidase inhibitor in vitro (IC50 = 21.0 μM). Mangostenone F was found to inhibit production of melanin in the mouse melanoma cell line B16F10. Importantly, unlike most glycosidase inhibitors, mangostenone F displayed very low cytotoxicity (EC50 > 200 μM). The Western blot for expression levels of proteins involved in melanogenesis showed that mangostenone F down-regulated tyrosinase and TRP-2 expression. Treating B16F10 cells with mangostenone F significantly increased the susceptibility of tyrosinase to endoglycosidase H digestion, indicating that tyrosinase was unable to mature fully and pass to the trans-golgi apparatus. Consistent with these data, in lysate assays, mangostenone F was shown to be a better inhibitor of α-glucosidases than deoxynojirimycin, a representative glycosidase inhibitor.
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Affiliation(s)
- Hyung Won Ryu
- Division of Applied Life Science (BK21 Program), IALS, Graduate School of Gyeongsang National University , Jinju 660-701, Republic of Korea
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Woo HS, Kim DW, Curtis-Long MJ, Lee BW, Lee JH, Kim JY, Kang JE, Park KH. Potent inhibition of bacterial neuraminidase activity by pterocarpans isolated from the roots of Lespedeza bicolor. Bioorg Med Chem Lett 2011; 21:6100-3. [DOI: 10.1016/j.bmcl.2011.08.046] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2011] [Revised: 08/02/2011] [Accepted: 08/10/2011] [Indexed: 10/17/2022]
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Yew WW, Wong PC, Woo HS, Yip CW, Chan CY, Cheng FB. Characterization of Mycobacterium fortuitum isolates from sternotomy wounds by antimicrobial susceptibilities, plasmid profiles, and ribosomal ribonucleic acid gene restriction patterns. Diagn Microbiol Infect Dis 1993; 17:111-7. [PMID: 7694821 DOI: 10.1016/0732-8893(93)90021-x] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
An outbreak of sternotomy infections due to Mycobacterium fortuitum in patients who had received cardiovascular surgery occurred in a cardiothoracic hospital in Hong Kong, and 21 such isolates from different patients had antimicrobial susceptibility studies against 14 drugs in vitro. These isolates were also studied for plasmid profiles and ribosomal ribonucleic acid gene restriction patterns. The latter method proved valuable in categorization of these isolates into two groups (comprising of nine and seven isolates, respectively) and five other sporadic strains. When the plasmid profiles and ribotyping are matched against the clinical and epidemiologic data, multisource contamination is suspected to be responsible for the outbreak. The organisms were probably derived from the environment rather than contaminated surgical equipments and materials.
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MESH Headings
- Adult
- Aged
- Blotting, Southern
- Child
- DNA, Bacterial/analysis
- DNA, Ribosomal/analysis
- Disease Outbreaks
- Drug Resistance, Microbial
- Electrophoresis, Agar Gel
- Female
- Humans
- Microbial Sensitivity Tests
- Middle Aged
- Mycobacterium Infections, Nontuberculous/epidemiology
- Mycobacterium Infections, Nontuberculous/microbiology
- Nontuberculous Mycobacteria/classification
- Nontuberculous Mycobacteria/drug effects
- Nontuberculous Mycobacteria/genetics
- Plasmids
- Polymorphism, Restriction Fragment Length
- RNA, Bacterial/genetics
- RNA, Ribosomal/genetics
- Sternum/microbiology
- Sternum/surgery
- Surgical Wound Infection/epidemiology
- Surgical Wound Infection/microbiology
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Affiliation(s)
- W W Yew
- Tuberculosis and Chest Unit, Grantham Hospital, Aberdeen
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Woo HS, Graham SC, Halliday DA, Bradley DD, Friend RH, Burn PL, Holmes AB. Photoinduced absorption and photoluminescence in poly(2,5-dimethoxy-p-phenylene vinylene). Phys Rev B Condens Matter 1992; 46:7379-7389. [PMID: 10002473 DOI: 10.1103/physrevb.46.7379] [Citation(s) in RCA: 56] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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Arbuckle GA, MacDiarmid AG, Lefrant S, Verdon T, Mulazzi E, Brivio GP, Yang XQ, Woo HS, Tanner DB. Optical spectroscopic investigation of segmented trans-polyacetylene. Phys Rev B Condens Matter 1991; 43:4739-4747. [PMID: 9997842 DOI: 10.1103/physrevb.43.4739] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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Stafström S, Brédas JL, Epstein AJ, Woo HS, Tanner DB, Huang WS, MacDiarmid AG. Polaron lattice in highly conducting polyaniline: Theoretical and optical studies. Phys Rev Lett 1987; 59:1464-1467. [PMID: 10035241 DOI: 10.1103/physrevlett.59.1464] [Citation(s) in RCA: 341] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/04/2023]
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Woo HS. [Orthodontic wires]. Chilwa Kijae Hakhoe Chi 1967; 2:52-5. [PMID: 5238104] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
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Woo HS. [Procedures of polishing]. Chilwa Kijae Hakhoe Chi 1967; 2:16-7. [PMID: 5230656] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
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Simmons DL, Woo HS, Koorengevel CM, Seers P. Quantitative determination by thin-layer chromatography of anhydrotetracyclines in degraded tetracycline tablets. J Pharm Sci 1966; 55:1313-5. [PMID: 4961421 DOI: 10.1002/jps.2600551132] [Citation(s) in RCA: 27] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
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