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Huynh TH, Kim HK, Lee J, Ban YH, Jang YJ, Heo BE, Nguyen TQ, An JS, Kwon Y, Nam SJ, Jang J, Oh KB, Shin MK, Oh DC. Retinestatin, a Polyol Polyketide from a Termite Nest-Derived Streptomyces sp. J Nat Prod 2024; 87:591-599. [PMID: 38442389 DOI: 10.1021/acs.jnatprod.3c01043] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/07/2024]
Abstract
A new polyol polyketide, named retinestatin (1), was obtained and characterized from the culture of a Streptomyces strain, which was isolated from a subterranean nest of the termite Reticulitermes speratus kyushuensis Morimoto. The planar structure of 1 was elucidated on the basis of the cumulative analysis of ultraviolet, infrared, mass spectrometry, and nuclear magnetic resonance spectroscopic data. The absolute configuration of 1 at 12 chiral centers was successfully assigned by employing a J-based configuration analysis in combination with ROESY correlations, a quantum mechanics-based computational approach to calculate NMR chemical shifts, and a 3 min flash esterification by Mosher's reagents followed by NMR analysis. Biological evaluation of retinestatin (1) using an in vitro model of Parkinson's disease revealed that 1 protected SH-SY5Y dopaminergic cells from MPP+-induced cytotoxicity, indicating its neuroprotective effects.
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Affiliation(s)
- Thanh-Hau Huynh
- Natural Products Research Institute, College of Pharmacy, Seoul National University, Seoul 08826, Republic of Korea
| | - Hee Kyung Kim
- College of Pharmacy and Research Institute of Pharmaceutical Sciences, Seoul National University, Seoul 08826, Republic of Korea
| | - Jayho Lee
- Department of Agricultural Biotechnology, College of Agriculture and Life Sciences and Natural Products Research Institute, Seoul National University, Seoul 08826, Republic of Korea
| | - Yeon Hee Ban
- Department of Molecular Bioscience, College of Biomedical Science, Kangwon National University, Chuncheon 24341, Republic of Korea
| | - Yong-Joon Jang
- Natural Center of Life and Environment, Seoul 08826, Republic of Korea
| | - Bo Eun Heo
- Division of Life Science, Department of Bio & Medical Big Data (BK21 Four Program), Research Institute of Life Science, Gyeongsang National University, Jinju 52828, Republic of Korea
| | - Thanh Quang Nguyen
- Division of Life Science, Department of Bio & Medical Big Data (BK21 Four Program), Research Institute of Life Science, Gyeongsang National University, Jinju 52828, Republic of Korea
| | - Joon Soo An
- Natural Products Research Institute, College of Pharmacy, Seoul National University, Seoul 08826, Republic of Korea
| | - Yun Kwon
- Research Institute of Pharmaceutical Sciences, College of Pharmacy, Kyungpook National University, Daegu 41566, Republic of Korea
| | - Sang-Jip Nam
- Department of Chemistry and Nanoscience, Ewha Womans University, Seoul 03760, Republic of Korea
| | - Jichan Jang
- Division of Life Science, Department of Bio & Medical Big Data (BK21 Four Program), Research Institute of Life Science, Gyeongsang National University, Jinju 52828, Republic of Korea
| | - Ki-Bong Oh
- Department of Agricultural Biotechnology, College of Agriculture and Life Sciences and Natural Products Research Institute, Seoul National University, Seoul 08826, Republic of Korea
| | - Min-Kyoo Shin
- Natural Products Research Institute, College of Pharmacy, Seoul National University, Seoul 08826, Republic of Korea
- College of Pharmacy and Research Institute of Pharmaceutical Sciences, Seoul National University, Seoul 08826, Republic of Korea
| | - Dong-Chan Oh
- Natural Products Research Institute, College of Pharmacy, Seoul National University, Seoul 08826, Republic of Korea
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Nam H, An JS, Lee J, Yun Y, Lee H, Park H, Jung Y, Oh KB, Oh DC, Kim S. Exploring the Diverse Landscape of Biaryl-Containing Peptides Generated by Cytochrome P450 Macrocyclases. J Am Chem Soc 2023; 145:22047-22057. [PMID: 37756205 DOI: 10.1021/jacs.3c07140] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/29/2023]
Abstract
Cytochrome P450 enzymes (P450s) catalyze diverse oxidative cross-coupling reactions between aromatic substrates in the natural product biosynthesis. Specifically, P450s install distinct biaryl macrocyclic linkages in three families of ribosomally synthesized and post-translationally modified peptides (RiPPs). However, the chemical diversity of biaryl-containing macrocyclic RiPPs remains largely unexplored. Here, we demonstrate that P450s have the capability to generate diverse biaryl linkages on RiPPs, collectively named "cyptides". Homology-based genome mining for P450 macrocyclases revealed 19 novel groups of homologous biosynthetic gene clusters (BGCs) with distinct aromatic residue patterns in the precursor peptides. Using the P450-modified precursor peptides heterologously coexpressed with corresponding P450s in Escherichia coli, we determined the NMR structures of three novel biaryl-containing peptides─the enzymatic products, roseovertin (1), rubrin (2), and lapparbin (3)─and confirmed the formation of three unprecedented or rare biaryl linkages: Trp C-7'-to-His N-τ in 1, Trp C-7'-to-Tyr C-6 in 2, and Tyr C-6-to-Trp N-1' in 3. Biochemical characterization indicated that certain P450s in these pathways have a relaxed substrate specificity. Overall, our studies suggest that P450 macrocyclases have evolved to create diverse biaryl linkages in RiPPs, promoting the exploration of a broader chemical space for biaryl-containing peptides encoded in bacterial genomes.
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Huynh TH, Bae ES, Heo BE, Lee J, An JS, Kwon Y, Nam SJ, Oh KB, Jang J, Lee SK, Oh DC. Tandocyclinones A and B, Ether Bridged C-Glycosyl Benz[ a]anthracenes from an Intertidal Zone Streptomyces sp. Mar Drugs 2023; 21:500. [PMID: 37755113 PMCID: PMC10533038 DOI: 10.3390/md21090500] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2023] [Revised: 09/18/2023] [Accepted: 09/19/2023] [Indexed: 09/28/2023] Open
Abstract
Two new proton-deficient metabolites, tandocyclinones A and B (1 and 2), were discovered via the chemical profiling of the Streptomyces sp. strain TDH03, which was isolated from a marine sediment sample collected from the intertidal mudflat in Tando Port, the Republic of Korea. The structures of 1 and 2 were elucidated as new ether-bridged C-glycosyl benz[a]anthracenes by using a combination of spectroscopic analyses of ultraviolet (UV) and mass spectrometry (MS) data, along with nuclear magnetic resonance (NMR) spectra, which were acquired in tetrahydrofuran (THF)-d8 selected after an extensive search for a solvent, resulting in mostly observable exchangeable protons in the 1H NMR spectrum. Their configurations were successfully assigned by applying a J-based configuration analysis, rotating-frame Overhauser enhancement spectroscopy (ROESY) NMR correlations, chemical derivatization methods based on NMR (a modified version of Mosher's method) and circular dichroism (CD) (Snatzke's method using Mo2(OAc)4-induced CD), as well as quantum-mechanics-based computational methods, to calculate the electronic circular dichroism (ECD). Tandocyclinones A and B (1 and 2) were found to have weak antifungal activity against Trichophyton mentagrophytes IFM40996 with an MIC value of 128 μg/mL (244 and 265 μM for 1 and 2, respectively). A further biological evaluation revealed that tandocyclinone A (1) displayed inhibitory activity against Mycobacterium avium (MIC50 = 40.8 μM) and antiproliferative activity against SNU638 and HCT116 cancer cells, with IC50 values of 31.9 µM and 49.4 µM, respectively.
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Affiliation(s)
- Thanh-Hau Huynh
- Natural Products Research Institute, College of Pharmacy, Seoul National University, Seoul 08826, Republic of Korea; (T.-H.H.); (E.S.B.); (J.S.A.); (S.K.L.)
| | - Eun Seo Bae
- Natural Products Research Institute, College of Pharmacy, Seoul National University, Seoul 08826, Republic of Korea; (T.-H.H.); (E.S.B.); (J.S.A.); (S.K.L.)
| | - Bo Eun Heo
- Division of Life Science, Department of Bio & Medical Big Data (BK21 Four Program), Research Institute of Life Science, Gyeongsang National University, Jinju 52828, Republic of Korea; (B.E.H.); (J.J.)
| | - Jayho Lee
- Department of Agricultural Biotechnology, College of Agriculture and Life Sciences and Natural Products Research Institute, Seoul National University, Seoul 08826, Republic of Korea; (J.L.); (K.-B.O.)
| | - Joon Soo An
- Natural Products Research Institute, College of Pharmacy, Seoul National University, Seoul 08826, Republic of Korea; (T.-H.H.); (E.S.B.); (J.S.A.); (S.K.L.)
| | - Yun Kwon
- Research Institute of Pharmaceutical Sciences, College of Pharmacy, Kyungpook National University, Daegu 41566, Republic of Korea;
| | - Sang-Jip Nam
- Department of Chemistry and Nanoscience, Ewha Womans University, Seoul 03760, Republic of Korea;
| | - Ki-Bong Oh
- Department of Agricultural Biotechnology, College of Agriculture and Life Sciences and Natural Products Research Institute, Seoul National University, Seoul 08826, Republic of Korea; (J.L.); (K.-B.O.)
| | - Jichan Jang
- Division of Life Science, Department of Bio & Medical Big Data (BK21 Four Program), Research Institute of Life Science, Gyeongsang National University, Jinju 52828, Republic of Korea; (B.E.H.); (J.J.)
| | - Sang Kook Lee
- Natural Products Research Institute, College of Pharmacy, Seoul National University, Seoul 08826, Republic of Korea; (T.-H.H.); (E.S.B.); (J.S.A.); (S.K.L.)
| | - Dong-Chan Oh
- Natural Products Research Institute, College of Pharmacy, Seoul National University, Seoul 08826, Republic of Korea; (T.-H.H.); (E.S.B.); (J.S.A.); (S.K.L.)
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Shin D, Byun WS, Kang S, Kang I, Bae ES, An JS, Im JH, Park J, Kim E, Ko K, Hwang S, Lee H, Kwon Y, Ko YJ, Hong S, Nam SJ, Kim SB, Fenical W, Yoon YJ, Cho JC, Lee SK, Oh DC. Targeted and Logical Discovery of Piperazic Acid-Bearing Natural Products Based on Genomic and Spectroscopic Signatures. J Am Chem Soc 2023; 145:19676-19690. [PMID: 37642383 DOI: 10.1021/jacs.3c04699] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [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: 08/31/2023]
Abstract
A targeted and logical discovery method was devised for natural products containing piperazic acid (Piz), which is biosynthesized from ornithine by l-ornithine N-hydroxylase (KtzI) and N-N bond formation enzyme (KtzT). Genomic signature-based screening of a bacterial DNA library (2020 strains) using polymerase chain reaction (PCR) primers targeting ktzT identified 62 strains (3.1%). The PCR amplicons of KtzT-encoding genes were phylogenetically analyzed to classify the 23 clades into two monophyletic groups, I and II. Cultivating hit strains in media supplemented with 15NH4Cl and applying 1H-15N heteronuclear multiple bond correlation (HMBC) along with 1H-15N heteronuclear single quantum coherence (HSQC) and 1H-15N HSQC-total correlation spectroscopy (HSQC-TOCSY) NMR experiments detected the spectroscopic signatures of Piz and modified Piz. Chemical investigation of the hit strains prioritized by genomic and spectroscopic signatures led to the identification of a new azinothricin congener, polyoxyperuin B seco acid (1), previously reported chloptosin (2) in group I, depsidomycin D (3) incorporating two dehydropiperazic acids (Dpz), and lenziamides A and B (4 and 5), structurally novel 31-membered cyclic decapeptides in group II. By consolidating the phylogenetic and chemical analyses, clade-structure relationships were elucidated for 19 of the 23 clades. Lenziamide A (4) inhibited STAT3 activation and induced G2/M cell cycle arrest, apoptotic cell death, and tumor growth suppression in human colorectal cancer cells. Moreover, lenziamide A (4) resensitized 5-fluorouracil (5-FU) activity in both in vitro cell cultures and the in vivo 5-FU-resistant tumor xenograft mouse model. This work demonstrates that the genomic and spectroscopic signature-based searches provide an efficient and general strategy for new bioactive natural products containing specific structural motifs.
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Affiliation(s)
- Daniel Shin
- Natural Products Research Institute, College of Pharmacy, Seoul National University, Seoul 08826, Republic of Korea
| | - Woong Sub Byun
- Natural Products Research Institute, College of Pharmacy, Seoul National University, Seoul 08826, Republic of Korea
| | - Sangwook Kang
- Natural Products Research Institute, College of Pharmacy, Seoul National University, Seoul 08826, Republic of Korea
| | - Ilnam Kang
- Department of Biological Sciences, Inha University, Incheon 22212, Republic of Korea
| | - Eun Seo Bae
- Natural Products Research Institute, College of Pharmacy, Seoul National University, Seoul 08826, Republic of Korea
| | - Joon Soo An
- Natural Products Research Institute, College of Pharmacy, Seoul National University, Seoul 08826, Republic of Korea
| | - Ji Hyeon Im
- Natural Products Research Institute, College of Pharmacy, Seoul National University, Seoul 08826, Republic of Korea
| | - Jiyoon Park
- Natural Products Research Institute, College of Pharmacy, Seoul National University, Seoul 08826, Republic of Korea
| | - Eunji Kim
- Natural Products Research Institute, College of Pharmacy, Seoul National University, Seoul 08826, Republic of Korea
| | - Keebeom Ko
- Natural Products Research Institute, College of Pharmacy, Seoul National University, Seoul 08826, Republic of Korea
| | - Sunghoon Hwang
- Natural Products Research Institute, College of Pharmacy, Seoul National University, Seoul 08826, Republic of Korea
| | - Honghui Lee
- Natural Products Research Institute and Research Institute of Pharmaceutical Sciences, College of Pharmacy, Seoul National University, Seoul 08826, Republic of Korea
| | - Yun Kwon
- Research Institute of Pharmaceutical Science, College of Pharmacy, Kyungpook National University, Daegu 41566, Republic of Korea
| | - Yoon-Joo Ko
- Laboratory of Nuclear Magnetic Resonance, National Center for Inter-University Research Facilities (NCIRF), Seoul National University, Seoul 08826, Republic of Korea
| | - Suckchang Hong
- Natural Products Research Institute and Research Institute of Pharmaceutical Sciences, College of Pharmacy, Seoul National University, Seoul 08826, Republic of Korea
| | - Sang-Jip Nam
- Department of Chemistry and Nanoscience, Ewha Womans University, Seoul 03760, Republic of Korea
| | - Seung Bum Kim
- Department of Microbiology and Molecular Biology, College of Bioscience and Biotechnology, Chungnam National University, Daejeon 34134, Republic of Korea
| | - William Fenical
- Center for Marine Biotechnology and Biomedicine, Scripps Institution of Oceanography and Skaggs School of Pharmacy and Pharmaceutical Sciences, University of California, San Diego, La Jolla, California 92093, United States
| | - Yeo Joon Yoon
- Natural Products Research Institute, College of Pharmacy, Seoul National University, Seoul 08826, Republic of Korea
- MolGenBio Co., Ltd., Seoul 08826, Republic of Korea
| | - Jang-Cheon Cho
- Department of Biological Sciences, Inha University, Incheon 22212, Republic of Korea
| | - Sang Kook Lee
- Natural Products Research Institute, College of Pharmacy, Seoul National University, Seoul 08826, Republic of Korea
| | - Dong-Chan Oh
- Natural Products Research Institute, College of Pharmacy, Seoul National University, Seoul 08826, Republic of Korea
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Um S, Jeong H, An JS, Jo SJ, Kim YR, Oh DC, Moon K. Chromatographic Determination of the Absolute Configuration in Sanjoinine A That Increases Nitric Oxide Production. Biomol Ther (Seoul) 2023; 31:566-572. [PMID: 37019875 PMCID: PMC10468421 DOI: 10.4062/biomolther.2023.028] [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] [Received: 02/14/2023] [Revised: 03/03/2023] [Accepted: 03/09/2023] [Indexed: 04/07/2023] Open
Abstract
A chiral derivatization strategy with phenylglycine methyl ester (PGME) was employed to develop a straightforward method to determine the absolute configurations of N,N-dimethyl amino acids. The PGME derivatives were analyzed using liquid chromatography-mass spectrometry to identify the absolute configurations of various N,N-dimethyl amino acids based on their elution time and order. The established method was applied to assign the absolute configuration of the N,N-dimethyl phenylalanine in sanjoinine A (4), a cyclopeptide alkaloid isolated from Zizyphi Spinosi Semen widely used as herbal medicine for insomnia. Sanjoinine A displayed production of nitric oxide (NO) in LPS-activated RAW 264.7 cells.
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Affiliation(s)
- Soohyun Um
- College of Pharmacy, Yonsei Institute of Pharmaceutical Sciences, Yonsei University, Incheon 21983, Republic of Korea
| | - Hyeongju Jeong
- College of Pharmacy, Research Institute of Pharmaceutical Sciences, Chonnam National University, Gwangju 61186, Republic of Korea
| | - Joon Soo An
- Natural Products Research Institute, College of Pharmacy, Seoul National University, Seoul 08826, Republic of Korea
| | - Se Jin Jo
- College of Pharmacy, Research Institute of Pharmaceutical Sciences, Chonnam National University, Gwangju 61186, Republic of Korea
| | - Young Ran Kim
- College of Pharmacy, Research Institute of Pharmaceutical Sciences, Chonnam National University, Gwangju 61186, Republic of Korea
| | - Dong-Chan Oh
- Natural Products Research Institute, College of Pharmacy, Seoul National University, Seoul 08826, Republic of Korea
| | - Kyuho Moon
- College of Pharmacy, Research Institute of Pharmaceutical Sciences, Chonnam National University, Gwangju 61186, Republic of Korea
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An JS, Lee H, Kim H, Woo S, Nam H, Lee J, Lee JY, Nam SJ, Lee SK, Oh KB, Kim S, Oh DC. Discovery and Biosynthesis of Cihunamides, Macrocyclic Antibacterial RiPPs with a Unique C-N Linkage Formed by CYP450 Catalysis. Angew Chem Int Ed Engl 2023; 62:e202300998. [PMID: 37114290 DOI: 10.1002/anie.202300998] [Citation(s) in RCA: 11] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2023] [Revised: 04/24/2023] [Accepted: 04/26/2023] [Indexed: 04/29/2023]
Abstract
Cihunamides A-D (1-4), novel antibacterial RiPPs, were isolated from volcanic-island-derived Streptomyces sp. The structures of 1-4 were elucidated by 1 H, 13 C, and 15 N NMR, MS, and chemical derivatization; they contain a tetrapeptide core composed of WNIW, cyclized by a unique C-N linkage between two Trp units. Genome mining of the producer strain revealed two biosynthetic genes encoding a cytochrome P450 enzyme and a precursor peptide. Heterologous co-expression of the core genes demonstrated the biosynthesis of cihunamides through P450-mediated oxidative Trp-Trp cross-linking. Further bioinformatic analysis uncovered 252 homologous gene clusters, including that of tryptorubins, which possess a distinct Trp-Trp linkage. Cihunamides do not display the non-canonical atropisomerism shown in tryptorubins, which are the founding members of the "atropitide" family. Therefore, we propose to use a new RiPP family name, "bitryptides", for cihunamides, tryptorubins, and their congeners, wherein the Trp-Trp linkages define the structural class rather than non-canonical atropisomerism.
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Affiliation(s)
- Joon Soo An
- Natural Products Research Institute, College of Pharmacy, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul, 08826 (Republic of, Korea
| | - Hyunbin Lee
- Department of Chemistry, College of Natural Sciences, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul, 08826 (Republic of, Korea
| | - Hyungyu Kim
- Natural Products Research Institute, College of Pharmacy, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul, 08826 (Republic of, Korea
| | - Seungyeon Woo
- Department of Chemistry, College of Natural Sciences, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul, 08826 (Republic of, Korea
| | - Hyunsung Nam
- Department of Chemistry, College of Natural Sciences, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul, 08826 (Republic of, Korea
| | - Jayho Lee
- Department of Agriculture Biotechnology, College of Agriculture and Life Sciences, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul, 08826 (Republic of, Korea
| | - Ji Yun Lee
- Natural Products Research Institute, College of Pharmacy, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul, 08826 (Republic of, Korea
| | - Sang-Jip Nam
- Department of Chemistry and Nanoscience, College of Natural Sciences, Ewha Womans University, 52 Ewhayeodae-gil, Seodaemun-gu, Seoul, 03760 (Republic of, Korea
| | - Sang Kook Lee
- Natural Products Research Institute, College of Pharmacy, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul, 08826 (Republic of, Korea
| | - Ki-Bong Oh
- Department of Agriculture Biotechnology, College of Agriculture and Life Sciences, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul, 08826 (Republic of, Korea
| | - Seokhee Kim
- Department of Chemistry, College of Natural Sciences, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul, 08826 (Republic of, Korea
| | - Dong-Chan Oh
- Natural Products Research Institute, College of Pharmacy, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul, 08826 (Republic of, Korea
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Oh SH, Park J, Moon DH, Hyun GH, Jang YJ, Hwang S, An JS, Du YE, Kwon Y, Kang YP, Lee SK, Oh DC. Apoptolidin I: A new glycosylated macrocyclic lactone from wasp gut bacterium, Amycolatopsis sp. Tetrahedron 2022. [DOI: 10.1016/j.tet.2022.133091] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Jang J, Lee J, Lee SB, Choi SH, Park EJ, Yoon SJ, An JS, Oh DC, Oh WK, Hong S. Total Synthesis of Melicoptelines C-E: Antiviral Cyclopeptides Containing a Hexahydropyrrolo[2,3- b]indole Moiety. Org Lett 2022; 24:6043-6048. [PMID: 35943240 DOI: 10.1021/acs.orglett.2c02339] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Melicoptelines, natural cyclopeptides containing a 3a-hydroxy hexahydropyrrolo[2,3-b]indole (HPI) moiety, exhibit anti-influenza activity. Herein, we report the first total synthesis of melicoptelines C-E (1-3, respectively). The core 3a-hydroxy HPIs were synthesized in a diastereoselective manner from l-tryptophan using dimethyldioxirane-mediated oxidation. Subsequently, sequential peptide couplings and cyclization completed the synthesis of melicoptelines C-E and unnatural melicopteline 4. The synthesized melicoptelines were evaluated for their anti-influenza activity, and melicopteline E showed the most potent inhibition of cytopathic effects.
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Affiliation(s)
- Joonseok Jang
- Research Institute of Pharmaceutical Sciences, College of Pharmacy, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul 08826, Republic of Korea
| | - Jinwoo Lee
- Research Institute of Pharmaceutical Sciences, College of Pharmacy, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul 08826, Republic of Korea
| | - Seok Beom Lee
- Research Institute of Pharmaceutical Sciences, College of Pharmacy, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul 08826, Republic of Korea
| | - Seung Hyun Choi
- Research Institute of Pharmaceutical Sciences, College of Pharmacy, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul 08826, Republic of Korea
| | - Eun Jin Park
- Research Institute of Pharmaceutical Sciences, College of Pharmacy, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul 08826, Republic of Korea
| | - Sang Jun Yoon
- Research Institute of Pharmaceutical Sciences, College of Pharmacy, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul 08826, Republic of Korea
| | - Joon Soo An
- Natural Products Research Institute, College of Pharmacy, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul 08826, Republic of Korea
| | - Dong-Chan Oh
- Natural Products Research Institute, College of Pharmacy, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul 08826, Republic of Korea
| | - Won Keun Oh
- Research Institute of Pharmaceutical Sciences, College of Pharmacy, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul 08826, Republic of Korea
| | - Suckchang Hong
- Research Institute of Pharmaceutical Sciences, College of Pharmacy, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul 08826, Republic of Korea
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Kang S, Han J, Jang SC, An JS, Kang I, Kwon Y, Nam SJ, Shim SH, Cho JC, Lee SK, Oh DC. Epoxinnamide: An Epoxy Cinnamoyl-Containing Nonribosomal Peptide from an Intertidal Mudflat-Derived Streptomyces sp. Mar Drugs 2022; 20:md20070455. [PMID: 35877748 PMCID: PMC9321520 DOI: 10.3390/md20070455] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2022] [Revised: 07/09/2022] [Accepted: 07/09/2022] [Indexed: 12/03/2022] Open
Abstract
Cinnamoyl-containing nonribosomal peptides (CCNPs) form a unique family of actinobacterial secondary metabolites and display various biological activities. A new CCNP named epoxinnamide (1) was discovered from intertidal mudflat-derived Streptomyces sp. OID44. The structure of 1 was determined by the analysis of one-dimensional (1D) and two-dimensional (2D) nuclear magnetic resonance (NMR) data along with a mass spectrum. The absolute configuration of 1 was assigned by the combination of advanced Marfey’s method, 3JHH and rotating-frame overhauser effect spectroscopy (ROESY) analysis, DP4 calculation, and genomic analysis. The putative biosynthetic pathway of epoxinnamide (1) was identified through the whole-genome sequencing of Streptomyces sp. OID44. In particular, the thioesterase domain in the nonribosomal peptide synthetase (NRPS) biosynthetic gene cluster was proposed as a bifunctional enzyme, which catalyzes both epimerization and macrocyclization. Epoxinnamide (1) induced quinone reductase (QR) activity in murine Hepa-1c1c7 cells by 1.6-fold at 5 μM. It also exhibited effective antiangiogenesis activity in human umbilical vein endothelial cells (IC50 = 13.4 μM).
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Affiliation(s)
- Sangwook Kang
- Natural Products Research Institute, College of Pharmacy, Seoul National University, Seoul 08826, Korea; (S.K.); (J.H.); (S.C.J.); (J.S.A.); (S.H.S.); (S.K.L.)
| | - Jaeho Han
- Natural Products Research Institute, College of Pharmacy, Seoul National University, Seoul 08826, Korea; (S.K.); (J.H.); (S.C.J.); (J.S.A.); (S.H.S.); (S.K.L.)
| | - Sung Chul Jang
- Natural Products Research Institute, College of Pharmacy, Seoul National University, Seoul 08826, Korea; (S.K.); (J.H.); (S.C.J.); (J.S.A.); (S.H.S.); (S.K.L.)
| | - Joon Soo An
- Natural Products Research Institute, College of Pharmacy, Seoul National University, Seoul 08826, Korea; (S.K.); (J.H.); (S.C.J.); (J.S.A.); (S.H.S.); (S.K.L.)
| | - Ilnam Kang
- Department of Biological Sciences, Inha University, Incheon 22212, Korea; (I.K.); (J.-C.C.)
| | - Yun Kwon
- Research Institute of Pharmaceutical Sciences, College of Pharmacy, Kyungpook National University, Daegu 41566, Korea;
| | - Sang-Jip Nam
- Department of Chemistry and Nanoscience, Ewha Womans University, Seoul 03760, Korea;
| | - Sang Hee Shim
- Natural Products Research Institute, College of Pharmacy, Seoul National University, Seoul 08826, Korea; (S.K.); (J.H.); (S.C.J.); (J.S.A.); (S.H.S.); (S.K.L.)
| | - Jang-Cheon Cho
- Department of Biological Sciences, Inha University, Incheon 22212, Korea; (I.K.); (J.-C.C.)
| | - Sang Kook Lee
- Natural Products Research Institute, College of Pharmacy, Seoul National University, Seoul 08826, Korea; (S.K.); (J.H.); (S.C.J.); (J.S.A.); (S.H.S.); (S.K.L.)
| | - Dong-Chan Oh
- Natural Products Research Institute, College of Pharmacy, Seoul National University, Seoul 08826, Korea; (S.K.); (J.H.); (S.C.J.); (J.S.A.); (S.H.S.); (S.K.L.)
- Correspondence: ; Tel.: +82-880-2491; Fax: +82-762-8322
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10
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An JS, Kim MS, Han J, Jang SC, Im JH, Cui J, Lee Y, Nam SJ, Shin J, Lee SK, Yoon YJ, Oh DC. Nyuzenamide C, an Antiangiogenic Epoxy Cinnamic Acid-Containing Bicyclic Peptide from a Riverine Streptomyces sp. J Nat Prod 2022; 85:804-814. [PMID: 35294831 DOI: 10.1021/acs.jnatprod.1c00837] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
A new nonribosomal peptide, nyuzenamide C (1), was discovered from riverine sediment-derived Streptomyces sp. DM14. Comprehensive analysis of the spectroscopic data of nyuzenamide C (1) revealed that 1 has a bicyclic backbone composed of six common amino acid residues (Asn, Leu, Pro, Gly, Val, and Thr) and four nonproteinogenic amino acid units, including hydroxyglycine, β-hydroxyphenylalanine, p-hydroxyphenylglycine, and 3,β-dihydroxytyrosine, along with 1,2-epoxypropyl cinnamic acid. The absolute configuration of 1 was proposed by J-based configuration analysis, the advanced Marfey's method, quantum mechanics-based DP4 calculations, and bioinformatic analysis of its nonribosomal peptide synthetase biosynthetic gene cluster. Nyuzenamide C (1) displayed antiangiogenic activity in human umbilical vein endothelial cells and induced quinone reductase in murine Hepa-1c1c7 cells.
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Affiliation(s)
- Joon Soo An
- Natural Products Research Institute, College of Pharmacy, Seoul National University, Seoul 08826, Republic of Korea
| | - Myoun-Su Kim
- Natural Products Research Institute, College of Pharmacy, Seoul National University, Seoul 08826, Republic of Korea
| | - Jaeho Han
- Natural Products Research Institute, College of Pharmacy, Seoul National University, Seoul 08826, Republic of Korea
| | - Sung Chul Jang
- Natural Products Research Institute, College of Pharmacy, Seoul National University, Seoul 08826, Republic of Korea
| | - Ji Hyeon Im
- Natural Products Research Institute, College of Pharmacy, Seoul National University, Seoul 08826, Republic of Korea
| | - Jinsheng Cui
- Natural Products Research Institute, College of Pharmacy, Seoul National University, Seoul 08826, Republic of Korea
| | - Yeonjin Lee
- Natural Products Research Institute, College of Pharmacy, Seoul National University, Seoul 08826, Republic of Korea
| | - Sang-Jip Nam
- Department of Chemistry and Nanoscience, Ewha Womans University, Seoul 03760, Republic of Korea
| | - Jongheon Shin
- Natural Products Research Institute, College of Pharmacy, Seoul National University, Seoul 08826, Republic of Korea
| | - Sang Kook Lee
- Natural Products Research Institute, College of Pharmacy, Seoul National University, Seoul 08826, Republic of Korea
| | - Yeo Joon Yoon
- Natural Products Research Institute, College of Pharmacy, Seoul National University, Seoul 08826, Republic of Korea
| | - Dong-Chan Oh
- Natural Products Research Institute, College of Pharmacy, Seoul National University, Seoul 08826, Republic of Korea
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11
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An JS, Lim HJ, Lee JY, Jang YJ, Nam SJ, Lee SK, Oh DC. Hamuramicin C, a Cytotoxic Bicyclic Macrolide Isolated from a Wasp Gut Bacterium. J Nat Prod 2022; 85:936-942. [PMID: 35362983 DOI: 10.1021/acs.jnatprod.1c01075] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
A new bicyclic macrolide, hamuramicin C (1), was isolated from Streptomyces sp. MBP16, a gut bacterial strain of the wasp Vespa crabro flavofasciata. Its 22-membered macrocyclic lactone structure was determined by NMR and mass spectrometry. The relative configurations of hamuramicin C (1) were assigned by J-based configuration analysis utilizing 1H rotating frame Overhauser effect spectroscopy and heteronuclear long-range coupling NMR spectroscopy. Genomic and bioinformatic analyses of the bacterial strain enabled identification of the type-I polyketide synthase pathway, which employs a trans-acyltransferase system. The absolute configurations of 1 were proposed based on the analysis of the sequences of ketoreductases in the modular gene cluster. Moreover, hamuramicin C (1) demonstrated significant inhibitory activity against diverse human cancer cell lines (HCT116, A549, SNU-638, SK-HEP-1, and MDA-MB-231).
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Affiliation(s)
- Joon Soo An
- Natural Products Research Institute, College of Pharmacy, Seoul National University, Seoul 08826, Republic of Korea
| | - Hyung-Ju Lim
- Natural Products Research Institute, College of Pharmacy, Seoul National University, Seoul 08826, Republic of Korea
| | - Ji Yun Lee
- Natural Products Research Institute, College of Pharmacy, Seoul National University, Seoul 08826, Republic of Korea
| | - Yong-Joon Jang
- Natura Center of Life and Environment, Seoul 08826, Republic of Korea
| | - Sang-Jip Nam
- Department of Chemistry and Nanoscience, Ewha Womans University, Seoul 03760, Republic of Korea
| | - Sang Kook Lee
- Natural Products Research Institute, College of Pharmacy, Seoul National University, Seoul 08826, Republic of Korea
| | - Dong-Chan Oh
- Natural Products Research Institute, College of Pharmacy, Seoul National University, Seoul 08826, Republic of Korea
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12
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Lim HJ, An JS, Bae ES, Cho E, Hwang S, Nam SJ, Oh KB, Lee SK, Oh DC. Ligiamycins A and B, Decalin-Amino-Maleimides from the Co-Culture of Streptomyces sp. and Achromobacter sp. Isolated from the Marine Wharf Roach, Ligia exotica. Mar Drugs 2022; 20:83. [PMID: 35200613 PMCID: PMC8878407 DOI: 10.3390/md20020083] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [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: 12/06/2021] [Revised: 01/08/2022] [Accepted: 01/11/2022] [Indexed: 02/04/2023] Open
Abstract
Streptomyces sp. GET02.ST and Achromobacter sp. GET02.AC were isolated together from the gut of the wharf roach, Ligia exotica, inhabiting the intertidal zone of the west coast of Korea. The co-cultivation of these two strains significantly induced the production of two new metabolites, ligiamycins A (1) and B (2), which were barely detected in the single culture of Streptomyces sp. GET02.ST. The planar structures of ligiamycins A (1) and B (2) were elucidated as new decalins coupled with amino-maleimides by the analysis of various spectroscopic data, including nuclear magnetic resonance (NMR), ultraviolet (UV), and mass (MS) data. The assignment of two nitrogen atoms in amino-maleimide in 1 was accomplished based on 1H-15N heteroatom single quantum coherence spectroscopy (HSQC) NMR experiments. The relative configurations of the ligiamycins were determined using rotating frame Overhauser effect spectroscopy (ROESY) NMR data, and their absolute configurations were deduced by comparing their experimental and calculated optical rotations. Ligiamycin A (1) displayed antibacterial effects against Staphylococcus aureus and Salmonella enterica, while ligiamycin B (2) exhibited mild cell cytotoxicity against human colorectal cancer cells.
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Affiliation(s)
- Hyung-Ju Lim
- Natural Products Research Institute, College of Pharmacy, Seoul National University, Seoul 08826, Korea; (H.-J.L.); (J.S.A.); (E.S.B.); (S.H.); (S.K.L.)
| | - Joon Soo An
- Natural Products Research Institute, College of Pharmacy, Seoul National University, Seoul 08826, Korea; (H.-J.L.); (J.S.A.); (E.S.B.); (S.H.); (S.K.L.)
| | - Eun Seo Bae
- Natural Products Research Institute, College of Pharmacy, Seoul National University, Seoul 08826, Korea; (H.-J.L.); (J.S.A.); (E.S.B.); (S.H.); (S.K.L.)
| | - Eunji Cho
- Department of Agriculture Biotechnology, College of Agriculture and Life Sciences, Seoul National University, Seoul 08826, Korea; (E.C.); (K.-B.O.)
| | - Sunghoon Hwang
- Natural Products Research Institute, College of Pharmacy, Seoul National University, Seoul 08826, Korea; (H.-J.L.); (J.S.A.); (E.S.B.); (S.H.); (S.K.L.)
| | - Sang-Jip Nam
- Department of Chemistry and Nanoscience, Ewha Womans University, Seoul 03760, Korea;
| | - Ki-Bong Oh
- Department of Agriculture Biotechnology, College of Agriculture and Life Sciences, Seoul National University, Seoul 08826, Korea; (E.C.); (K.-B.O.)
| | - Sang Kook Lee
- Natural Products Research Institute, College of Pharmacy, Seoul National University, Seoul 08826, Korea; (H.-J.L.); (J.S.A.); (E.S.B.); (S.H.); (S.K.L.)
| | - Dong-Chan Oh
- Natural Products Research Institute, College of Pharmacy, Seoul National University, Seoul 08826, Korea; (H.-J.L.); (J.S.A.); (E.S.B.); (S.H.); (S.K.L.)
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Shin J, Kwon Y, Nam K, An JS, Yang S, Hong S, Bae M, Moon K, Cho Y, Woo J, Park K, Kim K, Shin J, Kim B, Kim Y, Oh D. Rhizolutin directly dissociates Aβ and tau aggregates and reduces apoptosis/inflammation related to Alzheimer’s disease. Alzheimers Dement 2021. [DOI: 10.1002/alz.049661] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Jisu Shin
- Yonsei University Incheon South Korea
| | - Yun Kwon
- College of Pharmacy Seoul National University Seoul South Korea
| | - Kwangho Nam
- University of Texas at Arlington Arlington TX USA
| | - Joon Soo An
- College of Pharmacy Seoul National University Seoul South Korea
| | | | - Seong‐Heon Hong
- College of Pharmacy Seoul National University Seoul South Korea
| | - Munhyung Bae
- College of Pharmacy Seoul National University Seoul South Korea
| | - Kyuho Moon
- College of Pharmacy Seoul National University Seoul South Korea
| | - Yakdol Cho
- Research Animal Resource Center Korea Institute of Science and Technology Seoul South Korea
| | - Jiwan Woo
- Research Animal Resource Center Korea Institute of Science and Technology Seoul South Korea
| | - Keunwan Park
- Natural Product Informatics Research Center Korea Institute of Science and Technology Gangneung South Korea
| | | | - Jongheon Shin
- College of Pharmacy Seoul National University Seoul South Korea
| | - Byung‐Yong Kim
- Microbiome Research Centre ChunLab, Inc. Seoul South Korea
| | | | - Dong‐Chan Oh
- College of Pharmacy Seoul National University Seoul South Korea
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14
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An JS, Shin B, Kim TH, Hwang S, Shin YH, Cui J, Du YE, Yi J, Nam SJ, Hong S, Shin J, Jang J, Yoon YJ, Oh DC. Dumulmycin, an Antitubercular Bicyclic Macrolide from a Riverine Sediment-Derived Streptomyces sp. Org Lett 2021; 23:3359-3363. [DOI: 10.1021/acs.orglett.1c00847] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Affiliation(s)
- Joon Soo An
- Natural Products Research Institute, College of Pharmacy, Seoul National University, Seoul 08826, Republic of Korea
| | - Bora Shin
- Natural Products Research Institute, College of Pharmacy, Seoul National University, Seoul 08826, Republic of Korea
| | - Tae Ho Kim
- Molecular Mechanism of Antibiotics, Division of Life Science, Division of Bio & Medical Big Data Department (BK4 Program), Research Institute of Life Science, Gyeongsang National University, Jinju, Gyeongnam 52828, Republic of Korea
| | - Sunghoon Hwang
- Natural Products Research Institute, College of Pharmacy, Seoul National University, Seoul 08826, Republic of Korea
| | - Yern-Hyerk Shin
- Natural Products Research Institute, College of Pharmacy, Seoul National University, Seoul 08826, Republic of Korea
| | - Jinsheng Cui
- Natural Products Research Institute, College of Pharmacy, Seoul National University, Seoul 08826, Republic of Korea
| | - Young Eun Du
- Natural Products Research Institute, College of Pharmacy, Seoul National University, Seoul 08826, Republic of Korea
| | - Jungwoo Yi
- Natural Products Research Institute, College of Pharmacy, Seoul National University, Seoul 08826, Republic of Korea
| | - Sang-Jip Nam
- Department of Chemistry and Nanoscience, Ewha Womans University, Seoul 03760, Republic of Korea
| | - Suckchang Hong
- Research Institute of Pharmaceutical Sciences, College of Pharmacy, Seoul National University, Seoul 08826, Republic of Korea
| | - Jongheon Shin
- Natural Products Research Institute, College of Pharmacy, Seoul National University, Seoul 08826, Republic of Korea
| | - Jichan Jang
- Molecular Mechanism of Antibiotics, Division of Life Science, Division of Bio & Medical Big Data Department (BK4 Program), Research Institute of Life Science, Gyeongsang National University, Jinju, Gyeongnam 52828, Republic of Korea
| | - Yeo Joon Yoon
- Natural Products Research Institute, College of Pharmacy, Seoul National University, Seoul 08826, Republic of Korea
| | - Dong-Chan Oh
- Natural Products Research Institute, College of Pharmacy, Seoul National University, Seoul 08826, Republic of Korea
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15
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An JS, Hong SH, Somers E, Lee J, Kim BY, Woo D, Kim SW, Hong HJ, Jo SI, Shin J, Oh KB, Oh DC. Lenzimycins A and B, Metabolites With Antibacterial Properties From Brevibacillus sp. Associated With the Dung Beetle Onthophagus lenzii. Front Microbiol 2020; 11:599911. [PMID: 33193283 PMCID: PMC7661691 DOI: 10.3389/fmicb.2020.599911] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2020] [Accepted: 10/07/2020] [Indexed: 01/29/2023] Open
Abstract
Symbiotic microorganisms associated with insects can produce a wide array of metabolic products, which provide an opportunity for the discovery of useful natural products. Selective isolation of bacterial strains associated with the dung beetle, Onthophagus lenzii, identified two strains, of which the antibiotic-producing Brevibacillus sp. PTH23 inhibited the growth of Bacillus sp. CCARM 9248, which is most closely related to the well-known entomopathogen, Bacillus thuringiensis. A comprehensive chemical investigation based on antibiotic activity discovered two new antibiotics, named lenzimycins A and B (1-2), which inhibited growth of Bacillus sp. CCARM 9248. The 1H and 13C NMR, MS, MS/MS, and IR analyses elucidated the structures of 1 and 2, which comprised a novel combination of fatty acid (12-methyltetradecanoic acid), glycerol, sulfate, and N-methyl ethanolamine. Furthermore, the acid hydrolysis of 1 revealed the absolute configuration of 12-methyltetradecanoic acid as 12S by comparing its optical rotation value with authentic (R)- and (S)-12-methyltetradecanoic acid. In addition to inhibition of Bacillus sp. CCARM 9248, lenzimycins A and B were found to inhibit the growth of some human pathogenic bacteria, including Enterococcus faecium and certain strains of Enterococcus faecalis. Furthermore, the present study elucidated that lenzimycins A and B activated a reporter system designed to detect the bacterial cell envelope stress, thereby indicating an activity against the integrity of the bacterial cell wall.
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Affiliation(s)
- Joon Soo An
- Natural Products Research Institute, College of Pharmacy, Seoul National University, Seoul, South Korea
| | - Seong-Heon Hong
- Natural Products Research Institute, College of Pharmacy, Seoul National University, Seoul, South Korea
| | - Elisabeth Somers
- Department of Biological and Medical Sciences, Faculty of Health and Life Sciences, Oxford Brookes University, Oxford, United Kingdom
| | - Jayho Lee
- Department of Agricultural Biotechnology, College of Agriculture and Life Sciences, Seoul National University, Seoul, South Korea
| | | | - Donghee Woo
- Natural Products Research Institute, College of Pharmacy, Seoul National University, Seoul, South Korea
| | - Suk Won Kim
- Natural Products Research Institute, College of Pharmacy, Seoul National University, Seoul, South Korea
| | - Hee-Jeon Hong
- Department of Biological and Medical Sciences, Faculty of Health and Life Sciences, Oxford Brookes University, Oxford, United Kingdom
| | - Shin-Il Jo
- Animal Welfare Division, Seoul Zoo, Seoul Grand Park, Seoul, South Korea
| | - Jongheon Shin
- Natural Products Research Institute, College of Pharmacy, Seoul National University, Seoul, South Korea
| | - Ki-Bong Oh
- Department of Agricultural Biotechnology, College of Agriculture and Life Sciences, Seoul National University, Seoul, South Korea
| | - Dong-Chan Oh
- Natural Products Research Institute, College of Pharmacy, Seoul National University, Seoul, South Korea
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16
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Kwon Y, Shin J, Nam K, An JS, Yang S, Hong S, Bae M, Moon K, Cho Y, Woo J, Park K, Kim K, Shin J, Kim B, Kim Y, Oh D. Rhizolutin, a Novel 7/10/6‐Tricyclic Dilactone, Dissociates Misfolded Protein Aggregates and Reduces Apoptosis/Inflammation Associated with Alzheimer's Disease. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202009294] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Affiliation(s)
- Yun Kwon
- Natural Products Research Institute College of Pharmacy Seoul National University 1 Gwanak-ro, Gwanak-gu Seoul 08826 Republic of Korea
| | - Jisu Shin
- Department of Pharmacy and Yonsei Institute of Pharmaceutical Sciences Yonsei University 85 Songdogwahak-ro, Yeonsu-gu Incheon 21983 Republic of Korea
| | - Kwangho Nam
- Department of Chemistry and Biochemistry University of Texas at Arlington Arlington TX 76019 USA
| | - Joon Soo An
- Natural Products Research Institute College of Pharmacy Seoul National University 1 Gwanak-ro, Gwanak-gu Seoul 08826 Republic of Korea
| | - Seung‐Hoon Yang
- Department of Medical Biotechnology Dongguk University 32 Dongguk-ro, Ilsandong-gu, Goyang Gyeonggi-do 10326 Republic of Korea
| | - Seong‐Heon Hong
- Natural Products Research Institute College of Pharmacy Seoul National University 1 Gwanak-ro, Gwanak-gu Seoul 08826 Republic of Korea
| | - Munhyung Bae
- Natural Products Research Institute College of Pharmacy Seoul National University 1 Gwanak-ro, Gwanak-gu Seoul 08826 Republic of Korea
| | - Kyuho Moon
- Natural Products Research Institute College of Pharmacy Seoul National University 1 Gwanak-ro, Gwanak-gu Seoul 08826 Republic of Korea
| | - Yakdol Cho
- Research Animal Resource Center Korea Institute of Science and Technology (KIST) 5 Hwarang-ro 14-gil, Seongbuk-gu Seoul 02792 Republic of Korea
| | - Jiwan Woo
- Research Animal Resource Center Korea Institute of Science and Technology (KIST) 5 Hwarang-ro 14-gil, Seongbuk-gu Seoul 02792 Republic of Korea
| | - Keunwan Park
- Natural Product Informatics Research Center Korea Institute of Science and Technology (KIST) 679 Saimdang-ro, Gangneung-si Gangwon-do 25451 Republic of Korea
| | - Kyeonghwan Kim
- Department of Pharmacy and Yonsei Institute of Pharmaceutical Sciences Yonsei University 85 Songdogwahak-ro, Yeonsu-gu Incheon 21983 Republic of Korea
| | - Jongheon Shin
- Natural Products Research Institute College of Pharmacy Seoul National University 1 Gwanak-ro, Gwanak-gu Seoul 08826 Republic of Korea
| | - Byung‐Yong Kim
- Microbiome Research Centre ChunLab, Inc. 2477, JW Tower 6F, Nambusunhwan-ro Seocho-gu Seoul 06725 Republic of Korea
| | - YoungSoo Kim
- Department of Pharmacy and Yonsei Institute of Pharmaceutical Sciences Yonsei University 85 Songdogwahak-ro, Yeonsu-gu Incheon 21983 Republic of Korea
| | - Dong‐Chan Oh
- Natural Products Research Institute College of Pharmacy Seoul National University 1 Gwanak-ro, Gwanak-gu Seoul 08826 Republic of Korea
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Kwon Y, Shin J, Nam K, An JS, Yang SH, Hong SH, Bae M, Moon K, Cho Y, Woo J, Park K, Kim K, Shin J, Kim BY, Kim Y, Oh DC. Rhizolutin, a Novel 7/10/6-Tricyclic Dilactone, Dissociates Misfolded Protein Aggregates and Reduces Apoptosis/Inflammation Associated with Alzheimer's Disease. Angew Chem Int Ed Engl 2020; 59:22994-22998. [PMID: 32844539 DOI: 10.1002/anie.202009294] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2020] [Revised: 08/20/2020] [Indexed: 01/18/2023]
Abstract
Rhizolutin (1) was discovered as a natural product of ginseng-rhizospheric Streptomyces sp. WON17. Its structure features an unprecedented 7/10/6-tricyclic dilactone carbon skeleton composed of dimethylcyclodecatriene flanked by a 7-membered and a 6-membered lactone ring based on spectroscopic analysis. During an unbiased screening of natural product libraries, this novel compound was found to dissociate amyloid-β (Aβ) plaques and tau tangles, which are key pathological hallmarks of Alzheimer's disease (AD). Rhizolutin treatment of APP/PS1 double transgenic mice with AD significantly dissociated hippocampal plaques. In vitro, rhizolutin substantially decreased Aβ-induced apoptosis and inflammation in neuronal and glial cells. Our findings introduce a unique chemical entity that targets Aβ and tau concurrently by mimicking misfolded protein clearance mechanisms of immunotherapy, which is prominently investigated in clinical trials.
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Affiliation(s)
- Yun Kwon
- Natural Products Research Institute, College of Pharmacy, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul, 08826, Republic of Korea
| | - Jisu Shin
- Department of Pharmacy and Yonsei Institute of Pharmaceutical Sciences, Yonsei University, 85 Songdogwahak-ro, Yeonsu-gu, Incheon, 21983, Republic of Korea
| | - Kwangho Nam
- Department of Chemistry and Biochemistry, University of Texas at Arlington, Arlington, TX, 76019, USA
| | - Joon Soo An
- Natural Products Research Institute, College of Pharmacy, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul, 08826, Republic of Korea
| | - Seung-Hoon Yang
- Department of Medical Biotechnology, Dongguk University, 32 Dongguk-ro, Ilsandong-gu, Goyang, Gyeonggi-do, 10326, Republic of Korea
| | - Seong-Heon Hong
- Natural Products Research Institute, College of Pharmacy, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul, 08826, Republic of Korea
| | - Munhyung Bae
- Natural Products Research Institute, College of Pharmacy, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul, 08826, Republic of Korea
| | - Kyuho Moon
- Natural Products Research Institute, College of Pharmacy, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul, 08826, Republic of Korea
| | - Yakdol Cho
- Research Animal Resource Center, Korea Institute of Science and Technology (KIST), 5 Hwarang-ro 14-gil, Seongbuk-gu, Seoul, 02792, Republic of Korea
| | - Jiwan Woo
- Research Animal Resource Center, Korea Institute of Science and Technology (KIST), 5 Hwarang-ro 14-gil, Seongbuk-gu, Seoul, 02792, Republic of Korea
| | - Keunwan Park
- Natural Product Informatics Research Center, Korea Institute of Science and Technology (KIST), 679 Saimdang-ro, Gangneung-si, Gangwon-do, 25451, Republic of Korea
| | - Kyeonghwan Kim
- Department of Pharmacy and Yonsei Institute of Pharmaceutical Sciences, Yonsei University, 85 Songdogwahak-ro, Yeonsu-gu, Incheon, 21983, Republic of Korea
| | - Jongheon Shin
- Natural Products Research Institute, College of Pharmacy, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul, 08826, Republic of Korea
| | - Byung-Yong Kim
- Microbiome Research Centre, ChunLab, Inc., 2477, JW Tower 6F, Nambusunhwan-ro, Seocho-gu, Seoul, 06725, Republic of Korea
| | - YoungSoo Kim
- Department of Pharmacy and Yonsei Institute of Pharmaceutical Sciences, Yonsei University, 85 Songdogwahak-ro, Yeonsu-gu, Incheon, 21983, Republic of Korea
| | - Dong-Chan Oh
- Natural Products Research Institute, College of Pharmacy, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul, 08826, Republic of Korea
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18
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An JS, Lee JY, Kim E, Ahn H, Jang YJ, Shin B, Hwang S, Shin J, Yoon YJ, Lee SK, Oh DC. Formicolides A and B, Antioxidative and Antiangiogenic 20-Membered Macrolides from a Wood Ant Gut Bacterium. J Nat Prod 2020; 83:2776-2784. [PMID: 32892623 DOI: 10.1021/acs.jnatprod.0c00772] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Two new macrolides, formicolides A (1) and B (2), were isolated from Streptomyces sp. BA01, a gut bacterial strain of the wood ant (Formica yessensis). Their 20-membered macrocyclic lactone structures were established using NMR and mass spectrometric data. The relative configurations of the formicolides were determined by J-based configuration analysis utilizing ROESY, HETLOC, and HECADE NMR spectroscopic data. Genomic and bioinformatics analysis of the bacterial strain enabled us to identify the type-I polyketide synthase pathway employing a trans-acyltransferase system. The absolute configurations of 1 and 2 are proposed based on detailed analysis of the sequences of the ketoreductases in the modular gene cluster and statistical comparative analysis of the experimental NMR chemical shifts and quantum mechanical calculations. Formicolides A and B (1 and 2) induced quinone reductase activity in murine Hepa-1c1c7 cells and antiangiogenic activity by suppression of tube formation in human umbilical vein endothelial cells.
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Affiliation(s)
- Joon Soo An
- Natural Products Research Institute, College of Pharmacy, Seoul National University, Seoul 08826, Republic of Korea
| | - Ji Yun Lee
- Natural Products Research Institute, College of Pharmacy, Seoul National University, Seoul 08826, Republic of Korea
| | - Eunji Kim
- Natural Products Research Institute, College of Pharmacy, Seoul National University, Seoul 08826, Republic of Korea
| | - Hyungju Ahn
- Natural Products Research Institute, College of Pharmacy, Seoul National University, Seoul 08826, Republic of Korea
| | - Yong-Joon Jang
- Natura Center of Life and Environment, Seoul 08826, Republic of Korea
| | - Bora Shin
- Natural Products Research Institute, College of Pharmacy, Seoul National University, Seoul 08826, Republic of Korea
| | - Sunghoon Hwang
- Natural Products Research Institute, College of Pharmacy, Seoul National University, Seoul 08826, Republic of Korea
| | - Jongheon Shin
- Natural Products Research Institute, College of Pharmacy, Seoul National University, Seoul 08826, Republic of Korea
| | - Yeo Joon Yoon
- Natural Products Research Institute, College of Pharmacy, Seoul National University, Seoul 08826, Republic of Korea
| | - Sang Kook Lee
- Natural Products Research Institute, College of Pharmacy, Seoul National University, Seoul 08826, Republic of Korea
| | - Dong-Chan Oh
- Natural Products Research Institute, College of Pharmacy, Seoul National University, Seoul 08826, Republic of Korea
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Hwang S, Shin D, Kim TH, An JS, Jo SI, Jang J, Hong S, Shin J, Oh DC. Structural Revision of Lydiamycin A by Reinvestigation of the Stereochemistry. Org Lett 2020; 22:3855-3859. [DOI: 10.1021/acs.orglett.0c01110] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Sunghoon Hwang
- Natural Products Research Institute, College of Pharmacy, Seoul National University, Seoul 08826, Republic of Korea
| | - Daniel Shin
- Natural Products Research Institute, College of Pharmacy, Seoul National University, Seoul 08826, Republic of Korea
| | - Tae Ho Kim
- Molecular Mechanism of Antibiotics, Division of Life Science, Research Institute of Life Science, Gyeongsang National University, Jinju, Gyeongnam 52828, Republic of Korea
| | - Joon Soo An
- Natural Products Research Institute, College of Pharmacy, Seoul National University, Seoul 08826, Republic of Korea
| | - Shin-Il Jo
- Welfare Division, Seoul Zoo, Seoul Grand Park, Gwacheon, Gyeonggi 13829, Republic of Korea
| | - Jichan Jang
- Molecular Mechanism of Antibiotics, Division of Life Science, Research Institute of Life Science, Gyeongsang National University, Jinju, Gyeongnam 52828, Republic of Korea
| | - Suckchang Hong
- Research Institute of Pharmaceutical Sciences, College of Pharmacy, Seoul National University, Seoul 08826, Republic of Korea
| | - Jongheon Shin
- Natural Products Research Institute, College of Pharmacy, Seoul National University, Seoul 08826, Republic of Korea
| | - Dong-Chan Oh
- Natural Products Research Institute, College of Pharmacy, Seoul National University, Seoul 08826, Republic of Korea
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Bae M, An JS, Hong SH, Bae ES, Chung B, Kwon Y, Hong S, Oh KB, Shin J, Lee SK, Oh DC. Donghaecyclinones A-C: New Cytotoxic Rearranged Angucyclinones from a Volcanic Island-Derived Marine Streptomyces sp. Mar Drugs 2020; 18:md18020121. [PMID: 32085561 PMCID: PMC7073551 DOI: 10.3390/md18020121] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [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: 01/16/2020] [Revised: 02/08/2020] [Accepted: 02/10/2020] [Indexed: 12/14/2022] Open
Abstract
Chemical profiling of the Streptomyces sp. strain SUD119, which was isolated from a marine sediment sample collected from a volcanic island in Korea, led to the discovery of three new metabolites: donghaecyclinones A–C (1–3). The structures of 1–3 were found to be rearranged, multicyclic, angucyclinone-class compounds according to nuclear magnetic resonance (NMR) and mass spectrometry (MS) analyses. The configurations of their stereogenic centers were successfully assigned using a combination of quantum mechanics–based computational methods for calculating the NMR shielding tensor (DP4 and CP3) as well as electronic circular dichroism (ECD) along with a modified version of Mosher’s method. Donghaecyclinones A–C (1–3) displayed cytotoxicity against diverse human cancer cell lines (IC50: 6.7–9.6 μM for 3).
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Affiliation(s)
- Munhyung Bae
- Natural Products Research Institute, College of Pharmacy, Seoul National University, Seoul 08826, Korea; (M.B.); (J.S.A.); (S.-H.H.); (E.S.B.); (Y.K.); (J.S.); (S.K.L.)
| | - Joon Soo An
- Natural Products Research Institute, College of Pharmacy, Seoul National University, Seoul 08826, Korea; (M.B.); (J.S.A.); (S.-H.H.); (E.S.B.); (Y.K.); (J.S.); (S.K.L.)
| | - Seong-Heon Hong
- Natural Products Research Institute, College of Pharmacy, Seoul National University, Seoul 08826, Korea; (M.B.); (J.S.A.); (S.-H.H.); (E.S.B.); (Y.K.); (J.S.); (S.K.L.)
| | - Eun Seo Bae
- Natural Products Research Institute, College of Pharmacy, Seoul National University, Seoul 08826, Korea; (M.B.); (J.S.A.); (S.-H.H.); (E.S.B.); (Y.K.); (J.S.); (S.K.L.)
| | - Beomkoo Chung
- Department of Agricultural Biotechnology, College of Agriculture & Life Sciences, Seoul National University, Seoul 08826, Korea; (B.C.); (K.-B.O.)
| | - Yun Kwon
- Natural Products Research Institute, College of Pharmacy, Seoul National University, Seoul 08826, Korea; (M.B.); (J.S.A.); (S.-H.H.); (E.S.B.); (Y.K.); (J.S.); (S.K.L.)
| | - Suckchang Hong
- Research Institute of Pharmaceutical Sciences, College of Pharmacy, Seoul National University, Seoul 08826, Korea;
| | - Ki-Bong Oh
- Department of Agricultural Biotechnology, College of Agriculture & Life Sciences, Seoul National University, Seoul 08826, Korea; (B.C.); (K.-B.O.)
| | - Jongheon Shin
- Natural Products Research Institute, College of Pharmacy, Seoul National University, Seoul 08826, Korea; (M.B.); (J.S.A.); (S.-H.H.); (E.S.B.); (Y.K.); (J.S.); (S.K.L.)
| | - Sang Kook Lee
- Natural Products Research Institute, College of Pharmacy, Seoul National University, Seoul 08826, Korea; (M.B.); (J.S.A.); (S.-H.H.); (E.S.B.); (Y.K.); (J.S.); (S.K.L.)
| | - Dong-Chan Oh
- Natural Products Research Institute, College of Pharmacy, Seoul National University, Seoul 08826, Korea; (M.B.); (J.S.A.); (S.-H.H.); (E.S.B.); (Y.K.); (J.S.); (S.K.L.)
- Correspondence: ; Tel.: +82-2880-2491
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An JS, Rho YS, Moon JH, Lim YC. Notch1 inactivation promotes invasion and metastasis of nasopharyngeal carcinoma cells partly through Slug activation. Neoplasma 2019; 67:259-266. [PMID: 31777263 DOI: 10.4149/neo_2019_190313n220] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2019] [Accepted: 06/19/2019] [Indexed: 11/08/2022]
Abstract
Nasopharyngeal carcinoma (NPC) is a rare form of the head and neck cancer of the epithelial lining of the nasopharynx and exhibits the highest metastatic rate among head and neck cancers. Underlying mechanisms of metastasis remain largely unknown. Here, we explored whether Notch1 affects the invasion and metastasis of NPC cells. In vitro migration and invasion capacities were evaluated after the knockdown of Notch1 expression in NPC cells. To investigate the role of Notch1 in in vivo metastasis, we examined the metastatic ability to the lungs following administration of cancer cells via mouse tail vein. The expression of epithelial-mesenchymal transition (EMT) markers associated with Notch1-mediated metastasis was investigated, and their roles in metastasis and relationship with Notch1 expression were investigated. Suppression of Notch1 expression increased the ability of NPC cells to invade Matrigel in vitro. Knockdown of Notch1 expression in NPC cells resulted in extensive lung metastasis in a mouse model and increased the mRNA expression of Slug in NPC cells. Slug-specific RNA interference resulted in the loss of the metastatic and invasion capacities in Notch1-suppressed NPC cells. These findings show that Notch1 has a significant suppressive role in the regulation of metastasis in NPCs, suggestive of its prudent use in clinical trials.
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Affiliation(s)
- J S An
- Department of Otorhinolaryngology - Head and Neck Surgery, School of Medicine, Konkuk University, Seoul, South Korea
| | - Y S Rho
- Department of Otorhinolaryngology - Head and Neck Surgery, College of Medicine, Hallym University, Seoul, South Korea
| | - J H Moon
- Department of Otorhinolaryngology - Head and Neck Surgery, School of Medicine, Konkuk University, Seoul, South Korea
| | - Y C Lim
- Department of Otorhinolaryngology - Head and Neck Surgery, School of Medicine, Konkuk University, Seoul, South Korea
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22
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An JS, Zhao YX, Song Y, Li N, Huang MN, Li XG, Li B, Zhang R, Wu LY. [Analysis of effects and postoperative clinicopathological prognosis factors of neoadjuvant chemotherapy in patients with stage Ⅰb2 and Ⅱa2 squamous cell carcinoma of the cervix]. Zhonghua Fu Chan Ke Za Zhi 2019; 54:673-679. [PMID: 31648443 DOI: 10.3760/cma.j.issn.0529-567x.2019.10.005] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To explore the effects and postoperative prognostic factors in cervical cancer patients received neoadjuvant chemotherapy combined with surgery and post-operative adjuvant therapy. Methods: A total of 177 patients with cervical cancer at International Federation of Gynecology and Obstetrics (FIGO) stage Ⅰ b2, Ⅱ a2 who underwent neoadjuvant chemotherapy (NACT) followed by surgery with and without adjuvant therapy in Cancer Hospital, Chinese Academy of Medical Sciences were included. Univariate and multivariate analyses of 5-year overall survival (OS) rate and 5-year disease-free survival (DFS) rate were performed. Results: Of 177 patients, 133 (75.1%) had stage Ⅰb2 and 44 (24.9%) had Ⅱa2 cancers. After NACT, overall response rate was 63.3% (112/177) including 12 cases of complete response (CR), 100 of partial response (PR) and no progressive disease (PD) case. At a median follow-up of 59.2 months, the 5-year DFS rate was 73.6% and the 5-year OS rate was 86.8%. Univariate analysis revealed that lymph node metastasis, deep stromal invasion and tumor size after NACT significantly affected 5-year DFS rate (P<0.05). Lymph node metastasis, deep stromal invasion and tumor size after NACT significantly affected 5-year OS rate (P<0.05). The multivariate analysis showed that, stromal invasion (outer 1/3 or outer 1/2) was independent risk factor of 5-year DFS rate (P<0.05), and 5-year OS rate was significantly affected by tumor size >3 cm after NACT (P<0.05). Conclusions: The effect of NACT in Ⅰ b2, Ⅱ a2 squamous carcinoma of the uterined cervix is confirmed. The independent risk factor for 5-year DFS rate in patients received NACT and hysterectomy is deep stromal invasion of the cervix. The presence of tumor size >3 cm after NACT adversely affect 5-year OS rate.
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Affiliation(s)
- J S An
- Department of Gynecologic Oncology, National Cancer Center, National Clinical Research Center for Cancer, Cancer Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing 100021, China
| | - Y X Zhao
- Department of Gynecologic Oncology, National Cancer Center, National Clinical Research Center for Cancer, Cancer Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing 100021, China
| | - Y Song
- Department of Pathology, National Cancer Center, National Clinical Research Center for Cancer, Cancer Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing 100021, China
| | - N Li
- Department of Gynecologic Oncology, National Cancer Center, National Clinical Research Center for Cancer, Cancer Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing 100021, China
| | - M N Huang
- Department of Gynecologic Oncology, National Cancer Center, National Clinical Research Center for Cancer, Cancer Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing 100021, China
| | - X G Li
- Department of Gynecologic Oncology, National Cancer Center, National Clinical Research Center for Cancer, Cancer Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing 100021, China
| | - B Li
- Department of Gynecologic Oncology, National Cancer Center, National Clinical Research Center for Cancer, Cancer Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing 100021, China
| | - R Zhang
- Department of Gynecologic Oncology, National Cancer Center, National Clinical Research Center for Cancer, Cancer Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing 100021, China
| | - L Y Wu
- Department of Gynecologic Oncology, National Cancer Center, National Clinical Research Center for Cancer, Cancer Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing 100021, China
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Wang WP, An JS, Yao HW, Li N, Zhang YY, Ge L, Song Y, Wang MJ, Yuan GW, Sun YC, Huang MN, Wu LY. [Prevalence and attribution of high-risk HPV in different histological types of cervical cancer]. Zhonghua Fu Chan Ke Za Zhi 2019; 54:293-300. [PMID: 31154709 DOI: 10.3760/cma.j.issn.0529-567x.2019.05.002] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To investigate the prevalence of high-risk HPV subtypes in different pathological types of cervical cancer, and analyze the attribution of carcinogenic HPV subtypes in different pathological types. Methods: A total of 1 541 patients with cervical cancer were treated between February 2009 and October 2016 in Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College. The median age at diagnosis was 49 years (ranged 20-82 years old). The numbers of patients with cervical cancer from North China, Northeast China, East China, Central China and other regions (including Northwest, Southwest and South China) were 961, 244, 175, 87 and 74 cases, respectively. Pathological types: 1 337 cases of squamous cell carcinoma (SCC), 87 usual adenocarcinoma (ADC), 23 adenosquamous carcinoma (ASC), 20 mucinous carcinoma (MC), 19 clear cell carcinoma (CCC), 12 endometrioid carcinoma (EC), 25 neuroendocrine carcinoma (NEC), 9 serous carcinoma (SC), 5 villous adenocarcinoma (VADC) and 4 minimal deviation adenocarcinoma (MDAC). The prevalence of high-risk HPV in different regions, age groups at diagnosis and pathological types in cervical cancer were analyzed. The attribution of 13 high-risk HPV subtypes in different pathological types of cervical cancer based on proportional attribution method, and the attribution of high-risk HPV subtypes prevented by 9-valent HPV vaccine in SCC and ADC were calculated. Results: (1) The prevalence of high-risk HPV in 1 541 patients with cervical cancer was 86.6% (1 335/1 541). The multiple high-risk HPV infection rate in patients with SCC ≥60 years old (23.0%, 37/161) was significantly higher than those in patients aged 45-59 years old and ≤44 years old [11.4% (85/747) vs 11.7% (50/429), P<0.01], and the high-risk HPV infection rates of patients with cervical cancer in North China, Northeast China, East China, Central China and other regions were respectively 86.8% (834/961), 87.7% (214/244), 83.4% (146/175), 83.9% (73/87) and 91.9% (68/74). SCC (86.8%, 1 337/1 541) and ADC (5.6%, 87/1 541) were the most common pathological types in cervical cancer. The high-risk HPV prevalence of SCC, ADC, ASC, MC, NEC and VADC were 90.1% (1 205/1 337), 74.7% (65/87), 87.0% (20/23), 65.0% (13/20), 72.0% (18/25) and 5/5 respectively. The high-risk HPV infection rates of SC, EC, CCC and MDAC were 4/9, 3/12, 2/19 and 0/4 respectively. (2) According to proportional attribution, HPV 16 (69.5%), HPV 18 (5.6%), HPV 58 (2.2%), HPV 31 (1.9%), HPV 52 (1.4%) and HPV 33 (1.3%) were the six common high-risk HPV subtypes in SCC. While, HPV 18 (44.1%), HPV 16 (20.5%), HPV 52 (2.3%), HPV 58 (1.2%) and HPV 51 (1.2%) were the main carcinogenic subtypes in ADC. The main carcinogenic high-risk HPV subtypes of ASC, NEC and MC were HPV 18 and HPV 16. The total attribution of HPV 16, 18, 31, 33, 45, 52 and 58 prevented by 9-valent HPV vaccine in SCC and ADC were 82.6% and 68.1% respectively; the attribution of HPV 45 in SCC and ADC were only 0.8% and 0. Conclusions: SCC and ADC are the main pathological types in cervical cancer. SCC, ADC, ASC, MC, NEC and VADC are closely related to high-risk HPV infection. HPV 16 is the main carcinogenic genotypes of SCC. HPV 18 maybe play an important role in the pathogenesis of ADC.
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Affiliation(s)
- W P Wang
- Department of Gynecologic Oncology, National Cancer Center, National Clinical Research Center for Cancer, Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100021, China
| | - J S An
- Department of Gynecologic Oncology, National Cancer Center, National Clinical Research Center for Cancer, Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100021, China
| | - H W Yao
- Department of Gynecologic Oncology, National Cancer Center, National Clinical Research Center for Cancer, Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100021, China
| | - N Li
- Department of Gynecologic Oncology, National Cancer Center, National Clinical Research Center for Cancer, Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100021, China
| | - Y Y Zhang
- Department of Gynecologic Oncology, National Cancer Center, National Clinical Research Center for Cancer, Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100021, China
| | - L Ge
- Department of Gynecologic Oncology, National Cancer Center, National Clinical Research Center for Cancer, Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100021, China
| | - Y Song
- Department of Pathology, National Cancer Center, National Clinical Research Center for Cancer, Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100021, China
| | - M J Wang
- Clinical Laboratory, National Cancer Center, National Clinical Research Center for Cancer, Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100021, China
| | - G W Yuan
- Department of Gynecologic Oncology, National Cancer Center, National Clinical Research Center for Cancer, Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100021, China
| | - Y C Sun
- Department of Gynecologic Oncology, National Cancer Center, National Clinical Research Center for Cancer, Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100021, China
| | - M N Huang
- Department of Gynecologic Oncology, National Cancer Center, National Clinical Research Center for Cancer, Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100021, China
| | - L Y Wu
- Department of Gynecologic Oncology, National Cancer Center, National Clinical Research Center for Cancer, Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100021, China
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Bae M, An JS, Bae ES, Oh J, Park SH, Lim Y, Ban YH, Kwon Y, Cho JC, Yoon YJ, Lee SK, Shin J, Oh DC. Donghaesulfins A and B, Dimeric Benz[a]anthracene Thioethers from Volcanic Island Derived Streptomyces sp. Org Lett 2019; 21:3635-3639. [DOI: 10.1021/acs.orglett.9b01057] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Munhyung Bae
- Natural Products Research Institute, College of Pharmacy, Seoul National University, Seoul 08826, Republic of Korea
| | - Joon Soo An
- Natural Products Research Institute, College of Pharmacy, Seoul National University, Seoul 08826, Republic of Korea
| | - Eun Seo Bae
- Natural Products Research Institute, College of Pharmacy, Seoul National University, Seoul 08826, Republic of Korea
| | - Jedo Oh
- Natural Products Research Institute, College of Pharmacy, Seoul National University, Seoul 08826, Republic of Korea
| | - So Hyun Park
- Natural Products Research Institute, College of Pharmacy, Seoul National University, Seoul 08826, Republic of Korea
| | - Yeonjung Lim
- Department of Biological Sciences, Inha University, Incheon 22212, Republic of Korea
| | - Yeon Hee Ban
- Department of Chemistry and Nanoscience, Ewha Womans University, Seoul 03760, Republic of Korea
| | - Yun Kwon
- Natural Products Research Institute, College of Pharmacy, Seoul National University, Seoul 08826, Republic of Korea
| | - Jang-Cheon Cho
- Department of Biological Sciences, Inha University, Incheon 22212, Republic of Korea
| | - Yeo Joon Yoon
- Department of Chemistry and Nanoscience, Ewha Womans University, Seoul 03760, Republic of Korea
| | - Sang Kook Lee
- Natural Products Research Institute, College of Pharmacy, Seoul National University, Seoul 08826, Republic of Korea
| | - Jongheon Shin
- Natural Products Research Institute, College of Pharmacy, Seoul National University, Seoul 08826, Republic of Korea
| | - Dong-Chan Oh
- Natural Products Research Institute, College of Pharmacy, Seoul National University, Seoul 08826, Republic of Korea
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Hong SH, Ban YH, Byun WS, Kim D, Jang YJ, An JS, Shin B, Lee SK, Shin J, Yoon YJ, Oh DC. Camporidines A and B: Antimetastatic and Anti-inflammatory Polyketide Alkaloids from a Gut Bacterium of Camponotus kiusiuensis. J Nat Prod 2019; 82:903-910. [PMID: 30912943 DOI: 10.1021/acs.jnatprod.8b01000] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Chemical studies of gut bacteria of the carpenter ant Camponotus kiusiuensis led to the discovery of two new alkaloids, camporidines A and B (1 and 2), from Streptomyces sp. STA1. The structures of 1 and 2 were established as new polyketide alkaloids bearing a piperidine-cyclopentene-epoxide 6/5/3 tricyclic system based on NMR spectroscopic and mass spectrometric analysis. The relative configurations of the camporidines were determined by their 1H-1H NOESY/ROESY and 1D NOE NMR correlations. The experimental ECD spectra of 1 and 2 were compared with their calculated ECD spectra to assign their absolute configurations. Camporidine A (1) displayed antimetastatic activity by suppression of cell invasion against the metastatic breast cancer cell line MDA-MB-231 and showed an anti-inflammatory effect by suppressing nitric oxide production induced by lipopolysaccharide. In addition, the putative biosynthetic gene cluster of the camporidines was identified, and the biosynthetic pathway of the camporidines was proposed based on bioinformatic analysis of the full genome of Streptomyces sp. STA1. Camporidines A and B (1 and 2) could be biosynthesized by a modular type I PKS containing an acyl transferase domain that accepts an unusual extender unit, which becomes the (C1'-C6') hexyl side chain. The post-PKS modification enzymes were predicted to perform an amination and an oxidation along with spontaneous Schiff base formation and generate the unique piperidine-cyclopentene-epoxide 6/5/3 tricyclic framework.
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Affiliation(s)
- Seong-Heon Hong
- Natural Products Research Institute, College of Pharmacy , Seoul National University , Seoul 08826 , Republic of Korea
| | - Yeon Hee Ban
- Department of Chemistry and Nanoscience , Ewha Womans University , Seoul 03760 , Republic of Korea
| | - Woong Sub Byun
- Natural Products Research Institute, College of Pharmacy , Seoul National University , Seoul 08826 , Republic of Korea
| | - Donghwa Kim
- Natural Products Research Institute, College of Pharmacy , Seoul National University , Seoul 08826 , Republic of Korea
| | - Yong-Joon Jang
- Natura Academia Research Center , Seoul 08826 , Republic of Korea
| | - Joon Soo An
- Natural Products Research Institute, College of Pharmacy , Seoul National University , Seoul 08826 , Republic of Korea
| | - Bora Shin
- Natural Products Research Institute, College of Pharmacy , Seoul National University , Seoul 08826 , Republic of Korea
| | - Sang Kook Lee
- Natural Products Research Institute, College of Pharmacy , Seoul National University , Seoul 08826 , Republic of Korea
| | - Jongheon Shin
- Natural Products Research Institute, College of Pharmacy , Seoul National University , Seoul 08826 , Republic of Korea
| | - Yeo Joon Yoon
- Department of Chemistry and Nanoscience , Ewha Womans University , Seoul 03760 , Republic of Korea
| | - Dong-Chan Oh
- Natural Products Research Institute, College of Pharmacy , Seoul National University , Seoul 08826 , Republic of Korea
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Jeon K, Choi WI, An JS, Lim SY, Kim WJ, Park GM, Park SS, Choi HS, Lee BH, Choi JC, Na MJ, Park J, Kim JY. Paradoxical response in HIV-negative patients with pleural tuberculosis: a retrospective multicentre study. Int J Tuberc Lung Dis 2012; 16:846-51. [PMID: 22507441 DOI: 10.5588/ijtld.11.0642] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
OBJECTIVE To evaluate the incidence, clinical characteristics and predicting factors for the development of paradoxical response in human immunodeficiency virus negative patients with isolated pleural tuberculosis (TB). DESIGN A multicentre, retrospective cohort study including 458 patients who were diagnosed and treated with isolated pleural TB between March 2005 and February 2010. RESULTS Paradoxical response developed in 72 patients (16%) with isolated pleural TB. The mean time to development of paradoxical response was 8.8 ± 6.4 weeks after initiation of anti-tuberculosis treatment. The main presentation of paradoxical response was aggravation of pre-existing pleural effusion in 58 patients (81%). However, the majority of the patients who developed paradoxical response had no associated symptoms (n = 49, 68%). In multiple logistic regression analysis, development of paradoxical response was independently associated with the proportion of eosinophils (adjusted OR 1.293, 95%CI 1.077-1.553) and protein concentrations (adjusted OR 0.590, 95%CI 0.397-0.878) in the pleural fluid at the time of diagnosis. CONCLUSION Paradoxical response developed in 16% of the patients approximately 2 months after initiation of anti-tuberculosis treatment, presenting with aggravation of pre-existing pleural effusion. Development of paradoxical response was associated with the proportion of eosinophils and protein concentrations in the pleural fluid at the time of diagnosis.
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Affiliation(s)
- K Jeon
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, South Korea
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Carmichael WW, Azevedo SM, An JS, Molica RJ, Jochimsen EM, Lau S, Rinehart KL, Shaw GR, Eaglesham GK. Human fatalities from cyanobacteria: chemical and biological evidence for cyanotoxins. Environ Health Perspect 2001; 109:663-8. [PMID: 11485863 PMCID: PMC1240368 DOI: 10.1289/ehp.01109663] [Citation(s) in RCA: 520] [Impact Index Per Article: 22.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/18/2023]
Abstract
An outbreak of acute liver failure occurred at a dialysis center in Caruaru, Brazil (8 degrees 17' S, 35 degrees 58' W), 134 km from Recife, the state capital of Pernambuco. At the clinic, 116 (89%) of 131 patients experienced visual disturbances, nausea, and vomiting after routine hemodialysis treatment on 13-20 February 1996. Subsequently, 100 patients developed acute liver failure, and of these 76 died. As of December 1996, 52 of the deaths could be attributed to a common syndrome now called Caruaru syndrome. Examination of phytoplankton from the dialysis clinic's water source, analyses of the clinic's water treatment system, plus serum and liver tissue of clinic patients led to the identification of two groups of cyanobacterial toxins, the hepatotoxic cyclic peptide microcystins and the hepatotoxic alkaloid cylindrospermopsin. Comparison of victims' symptoms and pathology using animal studies of these two cyanotoxins leads us to conclude that the major contributing factor to death of the dialyses patients was intravenous exposure to microcystins, specifically microcystin-YR, -LR, and -AR. From liver concentrations and exposure volumes, it was estimated that 19.5 microg/L microcystin was in the water used for dialysis treatments. This is 19.5 times the level set as a guideline for safe drinking water supplies by the World Health Organization.
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Affiliation(s)
- W W Carmichael
- Department of Biological Sciences, Wright State University, 3640 Colonel Glen Highway, Dayton, OH 45435, USA.
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28
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Park YH, Yoo HS, Yoon JW, Yang SJ, An JS, Davis WC. Phenotypic and functional analysis of bovine gammadelta lymphocytes. J Vet Sci 2000; 1:39-48. [PMID: 14612619] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/27/2023] Open
Abstract
The studies have provided the first comprehensive comparison of the factors regulating activation and proliferation of WC1+ and WC1- gammadelta T cells. The investigation has shown that accessory molecules essential for activation and function of WC1+ and WC1- gammadelta T cells and the sources and roles of cytokines in activation of gammadelta T cells through the T cell receptor (TCR). The study has also shown that the role of cytokines in activation and function of gammadelta T cells activated indirectly through cytokines secreted by ab T cells, accessory cells and antigen presenting cells (APC). Cytokines were differentially produced by subpopulations of gammadelta T cells under different conditions of activation. The investigation obtained in this study has revealed that factors account for activation and proliferation of gammadelta T cells in cultures designed to study MHC-restricted responses to antigens. Evidence obtained here has shown there is biological relevance to activation under these culture conditions that points to potential regulatory and effector functions of gammadelta T cells. The investigations have also provided the information needed to begin identifying and characterizing antigens recognized by the TCR repertoires of WC1+ and WC1- gammadelta T cells. Finally, the investigations have provided the information needed to begin analysis of the mechanisms by which gammadelta T cells modulate MHC restricted immune responses to pathogens and derived vaccines.
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Affiliation(s)
- Y H Park
- Department of Microbiology and Infectious Diseases, College of Veterinary Medicine and School of Agricultural Biotechnology, Seoul National University, Suwon 441-744, Korea.
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Jochimsen EM, Carmichael WW, An JS, Cardo DM, Cookson ST, Holmes CE, Antunes MB, de Melo Filho DA, Lyra TM, Barreto VS, Azevedo SM, Jarvis WR. Liver failure and death after exposure to microcystins at a hemodialysis center in Brazil. N Engl J Med 1998; 338:873-8. [PMID: 9516222 DOI: 10.1056/nejm199803263381304] [Citation(s) in RCA: 628] [Impact Index Per Article: 24.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
BACKGROUND Hemodialysis is a common but potentially hazardous procedure. From February 17 to 20, 1996, 116 of 130 patients (89 percent) at a dialysis center (dialysis center A) in Caruaru, Brazil, had visual disturbances, nausea, and vomiting associated with hemodialysis. By March 24, 26 of the patients had died of acute liver failure. METHODS A case patient was defined as any patient undergoing dialysis at dialysis center A or Caruaru's other dialysis center (dialysis center B) during February 1996 who had acute liver failure. To determine the risk factors for and the source of the outbreak, we conducted a cohort study of the 130 patients at dialysis center A and the 47 patients at dialysis center B, reviewed the centers' water supplies, and collected water, patients' serum, and postmortem liver tissue for microcystin assays. RESULTS One hundred one patients (all at dialysis center A) met the case definition, and 50 died. Affected patients who died were older than those who survived (median age, 47 vs. 35 years, P<0.001). Furthermore, all 17 patients undergoing dialysis on the Tuesday-, Thursday-, and Saturday-night schedule became ill, and 13 of them (76 percent) died. Both centers received water from a nearby reservoir. However, the water supplied to dialysis center B was treated, filtered, and chlorinated, whereas the water supplied to dialysis center A was not. Microcystins produced by cyanobacteria were detected in water from the reservoir and from dialysis center A and in serum and liver tissue of case patients. CONCLUSIONS Water used for hemodialysis can contain toxic materials, and its quality should therefore be carefully monitored.
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Affiliation(s)
- E M Jochimsen
- Hospital Infections Program, National Center for Infectious Diseases, Centers for Disease Control and Prevention, Atlanta, GA 30333, USA
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