1
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Skala LE, Philmus B, Mahmud T. Modifications of Protein-Bound Substrates by Trans-Acting Enzymes in Natural Products Biosynthesis. Chembiochem 2024; 25:e202400056. [PMID: 38386898 PMCID: PMC11021167 DOI: 10.1002/cbic.202400056] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2024] [Revised: 02/21/2024] [Accepted: 02/22/2024] [Indexed: 02/24/2024]
Abstract
Enzymatic modifications of small molecules are a common phenomenon in natural product biosynthesis, leading to the production of diverse bioactive compounds. In polyketide biosynthesis, modifications commonly take place after the completion of the polyketide backbone assembly by the polyketide synthases and the mature products are released from the acyl-carrier protein (ACP). However, exceptions to this rule appear to be widespread, as on-line hydroxylation, methyl transfer, and cyclization during polyketide assembly process are common, particularly in trans-AT PKS systems. Many of these modifications are catalyzed by specific domains within the modular PKS systems. However, several of the on-line modifications are catalyzed by stand-alone proteins. Those include the on-line Baeyer-Villiger oxidation, α-hydroxylation, halogenation, epoxidation, and methyl esterification during polyketide assembly, dehydrogenation of ACP-bound short fatty acids by acyl-CoA dehydrogenase-like enzymes, and glycosylation of ACP-bound intermediates by discrete glycosyltransferase enzymes. This review article highlights some of these trans-acting proteins that catalyze enzymatic modifications of ACP-bound small molecules in natural product biosynthesis.
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Affiliation(s)
- Leigh E Skala
- Department of Pharmaceutical Sciences, Oregon State University, 203 Pharmacy Building, Corvallis, Oregon, 97331, U.S.A
| | - Benjamin Philmus
- Department of Pharmaceutical Sciences, Oregon State University, 203 Pharmacy Building, Corvallis, Oregon, 97331, U.S.A
| | - Taifo Mahmud
- Department of Pharmaceutical Sciences, Oregon State University, 203 Pharmacy Building, Corvallis, Oregon, 97331, U.S.A
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Salama S, Mostafa HS, Husseiny S, Sebak M. Actinobacteria as Microbial Cell Factories and Biocatalysts in The Synthesis of Chiral Intermediates and Bioactive Molecules; Insights and Applications. Chem Biodivers 2024; 21:e202301205. [PMID: 38155095 DOI: 10.1002/cbdv.202301205] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2023] [Revised: 12/25/2023] [Accepted: 12/28/2023] [Indexed: 12/30/2023]
Abstract
Actinobacteria are one of the most intriguing bacterial phyla in terms of chemical diversity and bioactivities of their reported biomolecules and natural products, including various types of chiral molecules. Actinobacterial genera such as Detzia, Mycobacterium, and Streptomyces are among the microbial sources targeted for selective reactions such as asymmetric biocatalysis catalyzed by whole cells or enzymes induced in their cell niche. Remarkably, stereoselective reactions catalyzed by actinobacterial whole cells or their enzymes include stereoselective oxidation, stereoselective reduction, kinetic resolution, asymmetric hydrolysis, and selective transamination, among others. Species of actinobacteria function with high chemo-, regio-, and enantio-selectivity under benign conditions, which could help current industrial processing. Numerous selective enzymes were either isolated from actinobacteria or expressed from actinobacteria in other microbes and hence exploited in the production of pure organic compounds difficult to obtain chemically. In addition, different species of actinobacteria, especially Streptomyces species, function as natural producers of chiral molecules of therapeutic importance. Herein, we discuss some of the most outstanding contributions of actinobacteria to asymmetric biocatalysis, which are important in the organic and/or pharmaceutical industries. In addition, we highlight the role of actinobacteria as microbial cell factories for chiral natural products with insights into their various biological potentialities.
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Affiliation(s)
- Sara Salama
- Department of Pharmaceutical Microbiology and Immunology, Faculty of Pharmacy, Beni-Suef University, 62514, Beni-Suef, Egypt
| | - Heba Sayed Mostafa
- Food Science Department, Faculty of Agriculture, Cairo University, 12613, Giza, Egypt
| | - Samah Husseiny
- Biotechnology and Life Sciences Department, Faculty of Postgraduate Studies for Advanced Sciences, Beni-Suef University, 62517, Beni-Suef, Egypt
| | - Mohamed Sebak
- Department of Pharmaceutical Microbiology and Immunology, Faculty of Pharmacy, Beni-Suef University, 62514, Beni-Suef, Egypt
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3
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Zhou W, Alharbi HA, Hummingbird E, Keatinge-Clay AT, Mahmud T. Functional Studies and Revision of the NFAT-133/TM-123 Biosynthetic Pathway in Streptomyces pactum. ACS Chem Biol 2022; 17:2039-2045. [PMID: 35904416 PMCID: PMC9391300 DOI: 10.1021/acschembio.2c00454] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The biosynthetic gene cluster of NFAT-133, an inhibitor of the nuclear factor of activated T cells, was recently identified in Streptomyces pactum ATCC 27456. This cluster is conspicuous by its highly disordered noncollinear type I modular polyketide synthase (PKS) genes that encode PKSs with one module more than those expected for the heptaketide NFAT-133 biosynthesis. Thus, the major metabolite NFAT-133 was proposed to derive from an octaketide analogue, TM-123. Here, we report that further bioinformatic analysis and gene inactivation studies suggest that NFAT-133 is not derived from TM-123 but rather a product of programmed KS7 extension skipping of a nascent heptaketide from the PKS assembly line that produces TM-123. Furthermore, identification of NFAT-133/TM-123 analogues from mutants of the ATCC 27456 strain suggests that NftN (a putative dehydrogenase), NftE (a cytochrome P450), and NftG (a putative hydrolase/decarboxylase) function "in trans" during the polyketide chain assembly processes.
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Affiliation(s)
- Wei Zhou
- Department of Pharmaceutical Sciences, Oregon State University, Corvallis, OR 97331-3507 (USA)
| | - Hattan A. Alharbi
- Department of Pharmaceutical Sciences, Oregon State University, Corvallis, OR 97331-3507 (USA)
| | - Eshe Hummingbird
- Department of Pharmaceutical Sciences, Oregon State University, Corvallis, OR 97331-3507 (USA)
| | | | - Taifo Mahmud
- Department of Pharmaceutical Sciences, Oregon State University, Corvallis, OR 97331-3507 (USA)
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4
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The Use of Baikal Psychrophilic Actinobacteria for Synthesis of Biologically Active Natural Products from Sawdust Waste. FERMENTATION 2022. [DOI: 10.3390/fermentation8050213] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
One of the relevant areas in microbiology and biotechnology is the study of microorganisms that induce the destruction of different materials, buildings, and machines and lead to negative effects. At the same time, the positive ecological effects of degradation can be explained by the detoxication of industrial and agricultural wastes, chemical substances, petroleum products, xenobiotics, pesticides, and other chemical pollutants. Many of these industrial wastes include hard-to-degrade components, such as lignocellulose or plastics. The biosynthesis of natural products based on the transformation of lignocellulosic wastes is of particular interest. One of the world’s unique ecosystems is presented by Lake Baikal. This ecosystem is characterized by the highest level of biodiversity, low temperatures, and a high purity of the water. Here, we studied the ability of several psychrophilic representatives of Baikal Actinobacteria to grow on sawdust wastes and transform them into bioactive natural products. Different strains of both widely spread genus of Actinobacteria and rare genera of Actinobacteria were tested. We used the LC-MS methods to show that Actinobacteria living in sawmill wastes can produce both known and novel natural products with antibiotic activity. We demonstrated that the type of sawmill wastes and their concentration influence the Actinobacteria biosynthetic potential. We have shown for the first time that the use of Baikal psychrophilic microorganisms as a factory for biodegradation is applicable for the transformation of lignocellulosic wastes. Thus, the development of techniques for screening novel natural products leads to an elaboration on the active ingredients for novel drugs.
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Dardić D, Böhringer N, Plaza A, Zubeil F, Pohl J, Sommer S, Padva L, Becker J, Patras MA, Bill MK, Kurz M, Toti L, Görgens SW, Schuler SMM, Billion A, Schwengers O, Wohlfart P, Goesmann A, Tennagels N, Vilcinskas A, Hammann PE, Schäberle TF, Bauer A. Antidiabetic profiling of veramycins, polyketides accessible by biosynthesis, chemical synthesis and precursor-directed modification. Org Chem Front 2022. [DOI: 10.1039/d1qo01652k] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
New polyketides, termed veramycins, were isolated along with their known congeners NFAT-133 and TM-123. Total synthesis from a central building block was accomplished, the BGC identified and a biosynthetic pathway for this molecule class proposed.
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Affiliation(s)
- Denis Dardić
- Fraunhofer Institute for Molecular Biology and Applied Ecology (IME), Branch for Bioresources, 35392 Gießen, Germany
| | - Nils Böhringer
- Justus-Liebig-University Gießen, 35392 Gießen, Germany
- German Center of Infection Research (DZIF), Partner Site Gießen-Marburg-Langen, 35392 Gießen, Germany
| | - Alberto Plaza
- Fraunhofer Institute for Molecular Biology and Applied Ecology (IME), Branch for Bioresources, 35392 Gießen, Germany
| | - Florian Zubeil
- Fraunhofer Institute for Molecular Biology and Applied Ecology (IME), Branch for Bioresources, 35392 Gießen, Germany
| | - Juliane Pohl
- Fraunhofer Institute for Molecular Biology and Applied Ecology (IME), Branch for Bioresources, 35392 Gießen, Germany
- Justus-Liebig-University Gießen, 35392 Gießen, Germany
| | - Svenja Sommer
- Fraunhofer Institute for Molecular Biology and Applied Ecology (IME), Branch for Bioresources, 35392 Gießen, Germany
- Justus-Liebig-University Gießen, 35392 Gießen, Germany
| | - Leo Padva
- Fraunhofer Institute for Molecular Biology and Applied Ecology (IME), Branch for Bioresources, 35392 Gießen, Germany
- Justus-Liebig-University Gießen, 35392 Gießen, Germany
| | | | - Maria A. Patras
- Fraunhofer Institute for Molecular Biology and Applied Ecology (IME), Branch for Bioresources, 35392 Gießen, Germany
| | - Mona-Katharina Bill
- Fraunhofer Institute for Molecular Biology and Applied Ecology (IME), Branch for Bioresources, 35392 Gießen, Germany
| | - Michael Kurz
- Sanofi-Aventis Deutschland GmbH, R&D Integrated Drug Discovery, 65926 Frankfurt am Main, Germany
| | - Luigi Toti
- Sanofi-Aventis Deutschland GmbH, R&D German Hub, 65926 Frankfurt am Main, Germany
| | - Sven W. Görgens
- Sanofi-Aventis Deutschland GmbH, R&D Integrated Drug Discovery, 65926 Frankfurt am Main, Germany
| | - Sören M. M. Schuler
- Fraunhofer Institute for Molecular Biology and Applied Ecology (IME), Branch for Bioresources, 35392 Gießen, Germany
| | - André Billion
- Fraunhofer Institute for Molecular Biology and Applied Ecology (IME), Branch for Bioresources, 35392 Gießen, Germany
| | | | - Paulus Wohlfart
- Sanofi-Aventis Deutschland GmbH, R&D German Hub, 65926 Frankfurt am Main, Germany
| | | | - Norbert Tennagels
- Sanofi-Aventis Deutschland GmbH, R&D German Hub, 65926 Frankfurt am Main, Germany
| | - Andreas Vilcinskas
- Fraunhofer Institute for Molecular Biology and Applied Ecology (IME), Branch for Bioresources, 35392 Gießen, Germany
- Justus-Liebig-University Gießen, 35392 Gießen, Germany
| | - Peter E. Hammann
- Sanofi-Aventis Deutschland GmbH, R&D German Hub, 65926 Frankfurt am Main, Germany
| | - Till F. Schäberle
- Fraunhofer Institute for Molecular Biology and Applied Ecology (IME), Branch for Bioresources, 35392 Gießen, Germany
- Justus-Liebig-University Gießen, 35392 Gießen, Germany
- German Center of Infection Research (DZIF), Partner Site Gießen-Marburg-Langen, 35392 Gießen, Germany
| | - Armin Bauer
- Sanofi-Aventis Deutschland GmbH, R&D Integrated Drug Discovery, 65926 Frankfurt am Main, Germany
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Yeppoonic acids A - D: 1,2,4-trisubstituted arene carboxylic acid co-metabolites of conglobatin from an Australian Streptomyces sp. J Antibiot (Tokyo) 2021; 75:108-112. [PMID: 34880415 DOI: 10.1038/s41429-021-00493-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2021] [Revised: 10/01/2021] [Accepted: 10/11/2021] [Indexed: 11/08/2022]
Abstract
Streptomyces sp. MST-91080 was isolated from a soil sample collected in Queensland, Australia. From this strain, yeppoonic acids A - D were purified and spectroscopically characterised. The yeppoonic acids are a family of diene enecarboxylic acids on a 1,2,4-trisubstituted benzene scaffold, structurally related to other Streptomyces secondary metabolites MF-EA-705α/β, NFAT-133 and the lorneic acids. Yeppoonic acids B and C show strong cytotoxicity against the NS-1 mouse myeloma cell line (IC50 2.3 µg ml-1 and 3.8 µg ml-1, respectively) and moderate activity against the DU 145 human prostate cancer cell line (IC50 32.8 µg ml-1 and 49.6 µg ml-1, respectively).
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Zhou W, Posri P, Liu XJ, Ju Z, Lan WJ, Mahmud T. Identification and Biological Activity of NFAT-133 Congeners from Streptomyces pactum. JOURNAL OF NATURAL PRODUCTS 2021; 84:2411-2419. [PMID: 34519213 PMCID: PMC8577183 DOI: 10.1021/acs.jnatprod.1c00152] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/10/2023]
Abstract
The soil bacterium Streptomyces pactum ATCC 27456 produces a number of polyketide natural products. Among them is NFAT-133, an inhibitor of the nuclear factor of activated T cells (NFAT) that suppresses interleukin-2 (IL-2) expression and T cell proliferation. Biosynthetic gene inactivation in the ATCC 27456 strain revealed the ability of this strain to produce other polyketide compounds including analogues of NFAT-133. Consequently, seven new derivatives of NFAT-133, TM-129-TM-135, together with a known compound, panowamycin A, were isolated from the culture broth of S. pactum ATCC 27456 ΔptmTDQ. Their chemical structures were elucidated on the basis of their HRESIMS, 1D and 2D NMR spectroscopy, and ECD calculation and spectral data. NFAT-133, TM-132, TM-135, and panowamycin A showed no antibacterial activity or cytotoxicity, but weakly reduced the production of LPS-induced nitric oxide in RAW264.7 cells in a dose-dependent manner. A revised chemical structure of panowamycin A and proposed modes of formation of the new NFAT-133 analogues are also presented.
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Affiliation(s)
- Wei Zhou
- Department of Pharmaceutical Sciences, Oregon State University, Corvallis, OR 97331, United States
| | - Priyapan Posri
- Department of Pharmaceutical Sciences, Oregon State University, Corvallis, OR 97331, United States
| | - Xiao-Jing Liu
- School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou 510006, People’s Republic of China
| | - Zhiran Ju
- Department of Pharmaceutical Sciences, Oregon State University, Corvallis, OR 97331, United States
| | - Wen-Jian Lan
- School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou 510006, People’s Republic of China
| | - Taifo Mahmud
- Department of Pharmaceutical Sciences, Oregon State University, Corvallis, OR 97331, United States
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8
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Zhou W, Posri P, Mahmud T. Natural Occurrence of Hybrid Polyketides from Two Distinct Biosynthetic Pathways in Streptomyces pactum. ACS Chem Biol 2021; 16:270-276. [PMID: 33601889 DOI: 10.1021/acschembio.0c00982] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Nature has always been seemingly limitless in its ability to create new chemical entities. It provides vastly diverse natural compounds through a biomanufacturing process that involves myriads of biosynthetic machineries. Here we report a case of unusual formations of hybrid natural products that are derived from two distinct polyketide biosynthetic pathways, the NFAT-133 and conglobatin pathways, in Streptomyces pactum ATCC 27456. Their chemical structures were determined by NMR spectroscopy, mass spectrometry, and chemical synthesis. Genome sequence analysis and gene inactivation experiments uncovered the biosynthetic gene cluster of conglobatin in S. pactum. Biochemical studies of the recombinant thioesterase (TE) domain of the conglobatin polyketide synthase (PKS) as well as its S74A mutant revealed that the formation of these hybrid compounds requires an active TE domain. We propose that NFAT-133 can interfere with conglobatin biosynthesis by reacting with the TE-domain-bound intermediates in the conglobatin PKS assembly line to form hybrid NFAT-133/conglobatin products.
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Affiliation(s)
- Wei Zhou
- Department of Pharmaceutical Sciences, Oregon State University, Corvallis, Oregon 97331-3507, United States
| | - Priyapan Posri
- Department of Pharmaceutical Sciences, Oregon State University, Corvallis, Oregon 97331-3507, United States
| | - Taifo Mahmud
- Department of Pharmaceutical Sciences, Oregon State University, Corvallis, Oregon 97331-3507, United States
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9
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Nazari A, Heravi MM, Zadsirjan V. Oxazolidinones as chiral auxiliaries in asymmetric aldol reaction applied to natural products total synthesis. J Organomet Chem 2021. [DOI: 10.1016/j.jorganchem.2020.121629] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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10
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Zhou W, Posri P, Abugrain ME, Weisberg AJ, Chang JH, Mahmud T. Biosynthesis of the Nuclear Factor of Activated T Cells Inhibitor NFAT-133 in Streptomyces pactum. ACS Chem Biol 2020; 15:3217-3226. [PMID: 33284588 DOI: 10.1021/acschembio.0c00775] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
NFAT-133 is a Streptomyces-derived aromatic polyketide compound with immunosuppressive, antidiabetic, and antitrypanosomal activities. It inhibits transcription mediated by nuclear factor of activated T cells (NFAT), leading to the suppression of interleukin-2 expression and T cell proliferation. It also activates the AMPK pathway in L6 myotubes and increases glucose uptake. In addition to NFAT-133, a number of its congeners, e.g., panowamycins and benwamycins, have been identified. However, little is known about their modes of formation in the producing organisms. Through genome sequencing of Streptomyces pactum ATCC 27456, gene inactivation, and genetic complementation experiments, the biosynthetic gene cluster of NFAT-133 and its congeners has been identified. The cluster contains a highly disordered genetic organization of type I modular polyketide synthase genes with several genes that are necessary for the formation of the aromatic core unit and tailoring processes. In addition, a number of new analogs of NFAT-133 were isolated and their chemical structures elucidated. It is suggested that the heptaketide NFAT-133 is derived from an octaketide intermediate, TM-123. The current study shows yet another unusual biosynthetic pathway involving a noncanonical polyketide synthase assembly line to produce a group of small molecules with valuable bioactivities.
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11
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Cai B, Panek JS. Titanium Alkoxide-Based Regioselective Alkyne-Alkyne Reductive Coupling Mediated by In Situ Generated Arylamidate. J Am Chem Soc 2020; 142:3729-3735. [PMID: 32050069 DOI: 10.1021/jacs.0c00550] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Titanium alkoxide-based alkyne-alkyne reductive coupling mediated by in situ generated arylamidate is described. A high level of regioselectivity is achieved in 37 examples, where (E,E)-dienes are exclusively formed. To the best of our knowledge, this study represents the first example of an apparent amide and carbamate directing effect in metal-mediated reductive coupling.
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Affiliation(s)
- Bin Cai
- Department of Chemistry, Metcalf Center for Science and Engineering , Boston University , 590 Commonwealth Avenue , Boston , Massachusetts 02215 , United States
| | - James S Panek
- Department of Chemistry, Metcalf Center for Science and Engineering , Boston University , 590 Commonwealth Avenue , Boston , Massachusetts 02215 , United States
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12
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Yang FX, Huang JP, Liu Z, Wang Z, Yang J, Tang J, Yu Z, Yan Y, Kai G, Huang SX. Benwamycins A-G, Trialkyl-Substituted Benzene Derivatives from a Soil-Derived Streptomyces. JOURNAL OF NATURAL PRODUCTS 2020; 83:111-117. [PMID: 31904958 DOI: 10.1021/acs.jnatprod.9b00903] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Seven new trialkyl-substituted benzene derivatives named benwamycins A-G (1-7), together with three known congeners, 8-10, were isolated from culture broth of the soil-derived Streptomyces sp. KIB-H1471. Their structures were elucidated by using 1D and 2D NMR analyses in combination with HRESIMS data. The absolute configurations of 1-9 were determined by chemical conversion and comparison of circular dichroism spectra and confirmed for 1 by single-crystal X-ray crystallography. Compounds 6 and 7 have a unique γ-pyrone-like ring on one side chain. Compounds 2 and 6 inhibited human T cell proliferation with IC50 values of 14.3 and 12.5 μM, respectively, without obvious cytotoxicity for naïve human T cells. Compounds 3 and 6 could weakly enhance insulin-stimulated glucose uptake.
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Affiliation(s)
- Feng-Xian Yang
- State Key Laboratory of Phytochemistry and Plant Resources in West China, and CAS Center for Excellence in Molecular Plant Sciences , Kunming Institute of Botany, Chinese Academy of Sciences , Kunming 650201 , People's Republic of China
- University of the Chinese Academy of Sciences , Beijing 100049 , People's Republic of China
| | - Jian-Ping Huang
- State Key Laboratory of Phytochemistry and Plant Resources in West China, and CAS Center for Excellence in Molecular Plant Sciences , Kunming Institute of Botany, Chinese Academy of Sciences , Kunming 650201 , People's Republic of China
| | - Zhixiang Liu
- Laboratory of Medicinal Plant Biotechnology, College of Pharmacy , Zhejiang Chinese Medical University , Hangzhou , Zhejiang 311402 , People's Republic of China
| | - Zhiyan Wang
- State Key Laboratory of Phytochemistry and Plant Resources in West China, and CAS Center for Excellence in Molecular Plant Sciences , Kunming Institute of Botany, Chinese Academy of Sciences , Kunming 650201 , People's Republic of China
- University of the Chinese Academy of Sciences , Beijing 100049 , People's Republic of China
| | - Jing Yang
- State Key Laboratory of Phytochemistry and Plant Resources in West China, and CAS Center for Excellence in Molecular Plant Sciences , Kunming Institute of Botany, Chinese Academy of Sciences , Kunming 650201 , People's Republic of China
| | - Jun Tang
- State Key Laboratory of Phytochemistry and Plant Resources in West China, and CAS Center for Excellence in Molecular Plant Sciences , Kunming Institute of Botany, Chinese Academy of Sciences , Kunming 650201 , People's Republic of China
- University of the Chinese Academy of Sciences , Beijing 100049 , People's Republic of China
| | - Zhiyin Yu
- State Key Laboratory of Phytochemistry and Plant Resources in West China, and CAS Center for Excellence in Molecular Plant Sciences , Kunming Institute of Botany, Chinese Academy of Sciences , Kunming 650201 , People's Republic of China
| | - Yijun Yan
- State Key Laboratory of Phytochemistry and Plant Resources in West China, and CAS Center for Excellence in Molecular Plant Sciences , Kunming Institute of Botany, Chinese Academy of Sciences , Kunming 650201 , People's Republic of China
| | - Guoyin Kai
- Laboratory of Medicinal Plant Biotechnology, College of Pharmacy , Zhejiang Chinese Medical University , Hangzhou , Zhejiang 311402 , People's Republic of China
| | - Sheng-Xiong Huang
- State Key Laboratory of Phytochemistry and Plant Resources in West China, and CAS Center for Excellence in Molecular Plant Sciences , Kunming Institute of Botany, Chinese Academy of Sciences , Kunming 650201 , People's Republic of China
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13
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Sato H, Kwon E, Taguchi Y, Yoshida S, Kuwahara S, Ogura Y. Synthesis and Stereochemical Revision of the Aromatic Polyketide NFAT-133. JOURNAL OF NATURAL PRODUCTS 2019; 82:1791-1796. [PMID: 31268714 DOI: 10.1021/acs.jnatprod.8b01063] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
NFAT-133, isolated from Streptomyces sp., is an immunosuppressive, antidiabetic, and antitrypanosomal aromatic polyketide with three contiguous stereocenters. The first enantioselective total synthesis of the proposed structure of NFAT-133 [(10R,11R,12S)-1] and its C10 epimer [(10S,11R,12S)-1] was achieved from a known aromatic ester (5) by a 10-step sequence that featured chiral auxiliary-directed asymmetric alkylation and the Evans asymmetric aldol reaction as the chirality-inducing steps. The 1H and 13C NMR data as well as the specific rotation value of natural NFAT-133 were not identical to those of the proposed structure, but were in good agreement with those of its C10 epimer. This led us to conclude that the absolute configuration of NFAT-133 should be revised to 10S, 11R, and 12S.
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Affiliation(s)
- Hikaru Sato
- Laboratory of Applied Bioorganic Chemistry, Graduate School of Agricultural Science , Tohoku University , 468-1 Aramaki-Aza-Aoba, Aoba-ku, Sendai 980-0845 , Japan
| | - Eunsang Kwon
- Research and Analytical Center for Giant Molecules, Graduate School of Science , Tohoku University , Sendai 980-8578 , Japan
| | - Yuka Taguchi
- Laboratory of Applied Bioorganic Chemistry, Graduate School of Agricultural Science , Tohoku University , 468-1 Aramaki-Aza-Aoba, Aoba-ku, Sendai 980-0845 , Japan
| | - Shinichiro Yoshida
- Research and Analytical Center for Giant Molecules, Graduate School of Science , Tohoku University , Sendai 980-8578 , Japan
| | - Shigefumi Kuwahara
- Laboratory of Applied Bioorganic Chemistry, Graduate School of Agricultural Science , Tohoku University , 468-1 Aramaki-Aza-Aoba, Aoba-ku, Sendai 980-0845 , Japan
| | - Yusuke Ogura
- Laboratory of Applied Bioorganic Chemistry, Graduate School of Agricultural Science , Tohoku University , 468-1 Aramaki-Aza-Aoba, Aoba-ku, Sendai 980-0845 , Japan
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14
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Cai B, Evans RW, Wu J, Panek JS. Total Synthesis of Nuclear Factor of Activated T-Cells-68 (NFAT-68): Sequential Use of Chiral Allenylsilane and Titanium Alkoxide-Mediated Reductive Coupling Bond Construction. Org Lett 2016; 18:4304-7. [PMID: 27513364 DOI: 10.1021/acs.orglett.6b02052] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Highly enantioenriched chiral allenylsilanes 4 were prepared in high yield through a scalable synthetic sequence, employing a modified copper-catalyzed SN2' reaction. These reagents were used for the production of enantioenriched homoproparglylic ethers 5, which were subjected to titanium alkoxide-mediated reductive coupling with acetylenic esters to produce (E,E)-dienes 6 bearing α,β,γ,δ-unsaturated esters. Both enantiomers of nuclear factor of activated T-cells-68 (NFAT-68) were synthesized in five steps with the sequential use of the two methods.
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Affiliation(s)
- Bin Cai
- Department of Chemistry, Metcalf Center for Science and Engineering, Boston University , 590 Commonwealth Avenue, Boston, Massachusetts 02215, United States
| | - Ryan W Evans
- Department of Chemistry, Metcalf Center for Science and Engineering, Boston University , 590 Commonwealth Avenue, Boston, Massachusetts 02215, United States
| | - Jie Wu
- Department of Chemistry, Metcalf Center for Science and Engineering, Boston University , 590 Commonwealth Avenue, Boston, Massachusetts 02215, United States
| | - James S Panek
- Department of Chemistry, Metcalf Center for Science and Engineering, Boston University , 590 Commonwealth Avenue, Boston, Massachusetts 02215, United States
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Thakkar CS, Kate AS, Desai DC, Ghosh AR, Kulkarni-Almeida AA. NFAT-133 increases glucose uptake in L6 myotubes by activating AMPK pathway. Eur J Pharmacol 2015; 769:117-26. [PMID: 26546724 DOI: 10.1016/j.ejphar.2015.11.006] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2015] [Revised: 10/31/2015] [Accepted: 11/03/2015] [Indexed: 10/22/2022]
Abstract
NFAT-133 is an aromatic compound with cinammyl alcohol moiety, isolated from streptomycetes strain PM0324667. We have earlier reported that NFAT-133 increases insulin stimulated glucose uptake in L6 myotubes using a PPARγ independent mechanism and reduces plasma or blood glucose levels in diabetic mice. Here we investigated the effects of NFAT-133 on cellular signaling pathways leading to glucose uptake in L6 myotubes. Our studies demonstrate that NFAT-133 increases glucose uptake in a dose- and time-dependent manner independent of the effects of insulin. Treatment with Akti-1/2, wortmannin and increasing concentrations of insulin had no effect on NFAT-133 mediated glucose uptake. NFAT-133 induced glucose uptake is completely mitigated by Compound C, an AMPK inhibitor. Further, the kinases upstream of AMPK activation namely; LKB-1 and CAMKKβ are not involved in NFAT-133 mediated AMPK activation nor does the compound NFAT-133 have any effect on AMPK enzyme activity. Further analysis confirmed that NFAT-133 indirectly activates AMPK by reducing the mitochondrial membrane potential and increasing the ratio of AMP:ATP.
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Affiliation(s)
- Chandni S Thakkar
- Screening-Metabolic Disorders Translational Unit, Piramal Enterprises Limited, 1A-Nirlon Complex, Off Western Express Highway, Goregaon (East), Mumbai 400063, Maharashtra, India
| | - Abhijeet S Kate
- Department of Natural Products, Piramal Enterprises Limited, 1A-Nirlon Complex, Off Western Express Highway, Goregaon (East), Mumbai 400063, Maharashtra, India
| | - Dattatraya C Desai
- Department of Medicinal Chemistry, Piramal Enterprises Limited, 1A-Nirlon Complex, Off Western Express Highway, Goregaon (East), Mumbai 400063, Maharashtra, India
| | - Asit Ranjan Ghosh
- Centre for Infectious Diseases & Control, School of BioSciences and Technology, VIT University, Vellore 632014, Tamil Nadu, India
| | - Asha A Kulkarni-Almeida
- Screening-Metabolic Disorders Translational Unit, Piramal Enterprises Limited, 1A-Nirlon Complex, Off Western Express Highway, Goregaon (East), Mumbai 400063, Maharashtra, India.
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Absolute configuration of NFAT-133, an aromatic polyketide with immunosuppressive and antidiabetic activity from actinomycetes. J Antibiot (Tokyo) 2015; 69:69-71. [PMID: 26285791 DOI: 10.1038/ja.2015.80] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2015] [Revised: 05/07/2015] [Accepted: 05/14/2015] [Indexed: 11/08/2022]
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Hashida J, Niitsuma M, Iwatsuki M, Mori M, Ishiyama A, Namatame M, Nishihara-Tsukashima A, Matsumoto A, Ara I, Takahashi Y, Yamada H, Otoguro K, Shiomi K, Omura S. Panowamycins A and B, new antitrypanosomal isochromans produced by Streptomyces sp. K07-0010. J Antibiot (Tokyo) 2012; 65:197-202. [PMID: 22274704 DOI: 10.1038/ja.2011.139] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Two new isochromans, panowamycins A and B, were purified by solvent extraction, silica gel and octadecylsilyl silica gel (ODS) column chromatography followed by preparative HPLC, from a culture broth of Streptomyces sp. K07-0010, together with the known compounds NFAT-133, conglobatin, piericidin C series and dinactin. Structures of panowamycins were elucidated as new analogs of NFAT-133 by spectroscopic studies including various NMR experiments. Panowamycins A and B showed moderate antitrypanosomal activity, with IC(50) values of 0.40 and 3.30 μg ml(-1), respectively.
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Affiliation(s)
- Junko Hashida
- Research Center for Tropical Diseases, Kitasato Institute for Life Sciences, Kitasato University, Tokyo, Japan
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Kulkarni-Almeida AA, Brahma MK, Padmanabhan P, Mishra PD, Parab RR, Gaikwad NV, Thakkar CS, Tokdar P, Ranadive PV, Nair AS, Damre AA, Bahirat UA, Deshmukh NJ, Doshi LS, Dixit AV, George SD, Vishwakarma RA, Nemmani KV, Mahajan GB. Fermentation, Isolation, Structure, and antidiabetic activity of NFAT-133 produced by Streptomyces strain PM0324667. AMB Express 2011; 1:42. [PMID: 22104600 PMCID: PMC3274447 DOI: 10.1186/2191-0855-1-42] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2011] [Accepted: 11/21/2011] [Indexed: 11/10/2022] Open
Abstract
Type-2 diabetes is mediated by defects in either insulin secretion or insulin action. In an effort to identify extracts that may stimulate glucose uptake, similar to insulin, a high throughput-screening assay for measuring glucose uptake in skeletal muscle cells was established. During the screening studies to discover novel antidiabetic compounds from microbial resources a Streptomyces strain PM0324667 (MTCC 5543, the Strain accession number at Institute of Microbial Technology, Chandigarh, India), an isolate from arid soil was identified which expressed a secondary metabolite that induced glucose uptake in L6 skeletal muscle cells. By employing bioactivity guided fractionation techniques, a tri-substituted simple aromatic compound with anti-diabetic potential was isolated. It was characterized based on MS and 2D NMR spectral data and identified as NFAT-133 which is a known immunosuppressive agent that inhibits NFAT-dependent transcription in vitro. Our investigations revealed the antidiabetic potential of NFAT-133. The compound induced glucose uptake in differentiated L6 myotubes with an EC50 of 6.3 ± 1.8 μM without activating the peroxisome proliferator-activated receptor-γ. Further, NFAT-133 was also efficacious in vivo in diabetic animals and reduced systemic glucose levels. Thus it is a potential lead compound which can be considered for development as a therapeutic for the treatment of type-2 diabetes. We have reported herewith the isolation of the producer microbe, fermentation, purification, in vitro, and in vivo antidiabetic activity of the compound.
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Wang L, Xi Y, Yang S, Zhu R, Liang Y, Chen J, Yang Z. Asymmetric Total Synthesis and Structural Elucidation of NFAT-68. Org Lett 2010; 13:74-7. [DOI: 10.1021/ol102574d] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Lin Wang
- Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education and Beijing National Laboratory for Molecular Science (BNLMS), College of Chemistry, Peking University, Beijing 10087, China, and Laboratory of Chemical Genomics, School of Chemical Biology and Biotechnology, Shenzhen Graduate School of Peking University, Shenzhen 518055, China
| | - Yumeng Xi
- Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education and Beijing National Laboratory for Molecular Science (BNLMS), College of Chemistry, Peking University, Beijing 10087, China, and Laboratory of Chemical Genomics, School of Chemical Biology and Biotechnology, Shenzhen Graduate School of Peking University, Shenzhen 518055, China
| | - Shouliang Yang
- Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education and Beijing National Laboratory for Molecular Science (BNLMS), College of Chemistry, Peking University, Beijing 10087, China, and Laboratory of Chemical Genomics, School of Chemical Biology and Biotechnology, Shenzhen Graduate School of Peking University, Shenzhen 518055, China
| | - Rong Zhu
- Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education and Beijing National Laboratory for Molecular Science (BNLMS), College of Chemistry, Peking University, Beijing 10087, China, and Laboratory of Chemical Genomics, School of Chemical Biology and Biotechnology, Shenzhen Graduate School of Peking University, Shenzhen 518055, China
| | - Yufan Liang
- Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education and Beijing National Laboratory for Molecular Science (BNLMS), College of Chemistry, Peking University, Beijing 10087, China, and Laboratory of Chemical Genomics, School of Chemical Biology and Biotechnology, Shenzhen Graduate School of Peking University, Shenzhen 518055, China
| | - Jiahua Chen
- Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education and Beijing National Laboratory for Molecular Science (BNLMS), College of Chemistry, Peking University, Beijing 10087, China, and Laboratory of Chemical Genomics, School of Chemical Biology and Biotechnology, Shenzhen Graduate School of Peking University, Shenzhen 518055, China
| | - Zhen Yang
- Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education and Beijing National Laboratory for Molecular Science (BNLMS), College of Chemistry, Peking University, Beijing 10087, China, and Laboratory of Chemical Genomics, School of Chemical Biology and Biotechnology, Shenzhen Graduate School of Peking University, Shenzhen 518055, China
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Sieber M, Baumgrass R. Novel inhibitors of the calcineurin/NFATc hub - alternatives to CsA and FK506? Cell Commun Signal 2009; 7:25. [PMID: 19860902 PMCID: PMC2774854 DOI: 10.1186/1478-811x-7-25] [Citation(s) in RCA: 77] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2009] [Accepted: 10/27/2009] [Indexed: 01/16/2023] Open
Abstract
The drugs cyclosporine A (CsA) and tacrolimus (FK506) revolutionized organ transplantation. Both compounds are still widely used in the clinic as well as for basic research, even though they have dramatic side effects and modulate other pathways than calcineurin-NFATc, too. To answer the major open question - whether the adverse side effects are secondary to the actions of the drugs on the calcineurin-NFATc pathway - alternative inhibitors were developed. Ideal inhibitors should discriminate between the inhibition of (i) calcineurin and peptidyl-prolyl cis-trans isomerases (PPIases; the matchmaker proteins of CsA and FK506), (ii) calcineurin and the other Ser/Thr protein phosphatases, and (iii) NFATc and other transcription factors. In this review we summarize the current knowledge about novel inhibitors, synthesized or identified in the last decades, and focus on their mode of action, specificity, and biological effects.
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Affiliation(s)
- Matthias Sieber
- Deutsches Rheuma-Forschungszentrum Berlin, Charitéplatz 1, D-10117 Berlin, Germany.
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Ren YR, Pan F, Parvez S, Fleig A, Chong CR, Xu J, Dang Y, Zhang J, Jiang H, Penner R, Liu JO. Clofazimine inhibits human Kv1.3 potassium channel by perturbing calcium oscillation in T lymphocytes. PLoS One 2008; 3:e4009. [PMID: 19104661 PMCID: PMC2602975 DOI: 10.1371/journal.pone.0004009] [Citation(s) in RCA: 87] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2008] [Accepted: 11/08/2008] [Indexed: 01/03/2023] Open
Abstract
The Kv1.3 potassium channel plays an essential role in effector memory T cells and has been implicated in several important autoimmune diseases including multiple sclerosis, psoriasis and type 1 diabetes. A number of potent small molecule inhibitors of Kv1.3 channel have been reported, some of which were found to be effective in various animal models of autoimmune diseases. We report herein the identification of clofazimine, a known anti-mycobacterial drug, as a novel inhibitor of human Kv1.3. Clofazimine was initially identified as an inhibitor of intracellular T cell receptor-mediated signaling leading to the transcriptional activation of human interleukin-2 gene in T cells from a screen of the Johns Hopkins Drug Library. A systematic mechanistic deconvolution revealed that clofazimine selectively blocked the Kv1.3 channel activity, perturbing the oscillation frequency of the calcium-release activated calcium channel, which in turn led to the inhibition of the calcineurin-NFAT signaling pathway. These effects of clofazimine provide the first line of experimental evidence in support of a causal relationship between Kv1.3 and calcium oscillation in human T cells. Furthermore, clofazimine was found to be effective in blocking human T cell-mediated skin graft rejection in an animal model in vivo. Together, these results suggest that clofazimine is a promising immunomodulatory drug candidate for treating a variety of autoimmune disorders.
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Affiliation(s)
- Yunzhao R Ren
- Department of Pharmacology and Molecular Sciences, The Johns Hopkins University School of Medicine, Baltimore, Maryland, United States of America
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Inoue K, Umehara T, Ruegg UT, Yasui F, Watanabe T, Yasuda H, Dumont JM, Scalfaro P, Yoshiba M, Kohara M. Evaluation of a cyclophilin inhibitor in hepatitis C virus-infected chimeric mice in vivo. Hepatology 2007; 45:921-8. [PMID: 17393519 DOI: 10.1002/hep.21587] [Citation(s) in RCA: 84] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
UNLABELLED Cyclosporin A (CsA) inhibits replication of the HCV subgenomic replicon, and this effect is believed to not be mediated by its immunosuppressive action. We found that DEBIO-025, a novel non-immunosuppressive cyclophilin inhibitor derived from CsA, inhibited HCV replication in vitro more potently than CsA. We also examined the inhibitory effect of DEBIO-025 on naive HCV genotypes 1a or 1b in vivo using chimeric mice with human hepatocytes. These mice were treated for 14 days with DEBIO-025, pegylated-interferon alpha-2a (Peg-IFN), a combination of either drugs, or CsA in combination with Peg-IFN. In mice treated with Peg-IFN, serum HCV RNA levels decreased approximately 10-fold whereas DEBIO-025 treatment alone did not induce any significant change. In mice treated with both DEBIO-025 and Peg-IFN, HCV RNA levels decreased more than 100-fold. All mice treated with Peg-IFN combined with CsA died within 4 days. The combination treatment of DEBIO-025 and Peg-IFN reduced HCV RNA levels and core protein expression in liver, indicating that the HCV RNA levels reduction in serum was attributable to intrahepatic inhibition of HCV replication. CONCLUSION We demonstrated that DEBIO-025 was better tolerated than CsA, and that its anti-HCV effect appeared to be synergistic in combination with Peg-IFN in vivo.
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Affiliation(s)
- Kazuaki Inoue
- Department of Microbiology and Cell Biology, The Tokyo Metropolitan Institute of Medical Science, Tokyo, Japan.
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Abstract
The nuclear factor of activated T cells (NFAT) plays an important role in T-cell biology. Activation of T cells results in the rapid calcineurin-dependent translocation of NFAT transcription factors from the cytoplasm to the nucleus. This translocation process coupled to the subsequent active maintenance of NFAT in the nucleus compartment is critical for the induction of expression of several genes encoding cytokines and membrane proteins that modulate immune responses. The molecular cloning of the NFAT family of transcription factors has facilitated rapid progress in the understanding of the signalling mechanisms that control the activity of NFAT.
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Affiliation(s)
- E S Masuda
- Department of Cell Signalling, DNAX Research Institute of Molecular and Cellular Biology, Palo Alto, CA 94304, USA.
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Affiliation(s)
- A K Trull
- Department of Clinical Biochemistry, Addenbrooke's Hospital, Cambridge, UK
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