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Płachetka M, Krawiec M, Zakrzewska-Czerwińska J, Wolański M. AdpA Positively Regulates Morphological Differentiation and Chloramphenicol Biosynthesis in Streptomyces venezuelae. Microbiol Spectr 2021; 9:e0198121. [PMID: 34878326 PMCID: PMC8653842 DOI: 10.1128/spectrum.01981-21] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [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: 10/22/2021] [Accepted: 10/29/2021] [Indexed: 11/22/2022] Open
Abstract
In members of genus Streptomyces, AdpA is a master transcriptional regulator that controls the expression of hundreds of genes involved in morphological differentiation, secondary metabolite biosynthesis, chromosome replication, etc. However, the function of AdpASv, an AdpA ortholog of Streptomyces venezuelae, is unknown. This bacterial species is a natural producer of chloramphenicol and has recently become a model organism for studies on Streptomyces. Here, we demonstrate that AdpASv is essential for differentiation and antibiotic biosynthesis in S. venezuelae and provide evidence suggesting that AdpASv positively regulates its own gene expression. We speculate that the different modes of AdpA-dependent transcriptional autoregulation observed in S. venezuelae and other Streptomyces species reflect the arrangement of AdpA binding sites in relation to the transcription start site. Lastly, we present preliminary data suggesting that AdpA may undergo a proteolytic processing and we speculate that this may potentially constitute a novel regulatory mechanism controlling cellular abundance of AdpA in Streptomyces. IMPORTANCEStreptomyces are well-known producers of valuable secondary metabolites which include a large variety of antibiotics and important model organisms for developmental studies in multicellular bacteria. The conserved transcriptional regulator AdpA of Streptomyces exerts a pleiotropic effect on cellular processes, including the morphological differentiation and biosynthesis of secondary metabolites. Despite extensive studies, the function of AdpA in these processes remains elusive. This work provides insights into the role of a yet unstudied AdpA ortholog of Streptomyces venezuelae, now considered a novel model organism. We found that AdpA plays essential role in morphological differentiation and biosynthesis of chloramphenicol, a broad-spectrum antibiotic. We also propose that AdpA may undergo a proteolytic processing that presumably constitutes a novel mechanism regulating cellular abundance of this master regulator.
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Affiliation(s)
| | - Michał Krawiec
- Faculty of Biotechnology, University of Wrocław, Wrocław, Poland
| | | | - Marcin Wolański
- Faculty of Biotechnology, University of Wrocław, Wrocław, Poland
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Botas A, Eitel M, Schwarz PN, Buchmann A, Costales P, Núñez LE, Cortés J, Morís F, Krawiec M, Wolański M, Gust B, Rodriguez M, Fischer W, Jandeleit B, Zakrzewska‐Czerwińska J, Wohlleben W, Stegmann E, Koch P, Méndez C, Gross H. Genetic Engineering in Combination with Semi‐Synthesis Leads to a New Route for Gram‐Scale Production of the Immunosuppressive Natural Product Brasilicardin A. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202015852] [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: 11/06/2022]
Affiliation(s)
- Alma Botas
- Departamento de Biología Funcional e Instituto Universitario de Oncología del Principado de Asturias Universidad de Oviedo and Instituto de Investigación Sanitaria de Asturias (ISPA) c/ Julián Clavería s/n. 33006 Oviedo Spain
| | - Michael Eitel
- Department of Pharmaceutical Chemistry Institute of Pharmaceutical Sciences University of Tübingen Auf der Morgenstelle 8 72076 Tübingen Germany
| | - Paul N. Schwarz
- Department of Microbiology and Biotechnology Interfaculty Institute of Microbiology and Infection Medicine University of Tübingen Auf der Morgenstelle 28 72076 Tübingen Germany
| | - Anina Buchmann
- Department of Pharmaceutical Biology Institute of Pharmaceutical Sciences University of Tübingen Auf der Morgenstelle 8 72076 Tübingen Germany
| | - Paula Costales
- EntreChem S.L. Vivero Ciencias de la Salud c/ Colegio Santo Domingo de Guzmán, s/n 33011 Oviedo Spain
| | - Luz Elena Núñez
- EntreChem S.L. Vivero Ciencias de la Salud c/ Colegio Santo Domingo de Guzmán, s/n 33011 Oviedo Spain
| | - Jesús Cortés
- EntreChem S.L. Vivero Ciencias de la Salud c/ Colegio Santo Domingo de Guzmán, s/n 33011 Oviedo Spain
| | - Francisco Morís
- EntreChem S.L. Vivero Ciencias de la Salud c/ Colegio Santo Domingo de Guzmán, s/n 33011 Oviedo Spain
| | - Michał Krawiec
- Department of Molecular Microbiology Faculty of Biotechnology University of Wrocław ul. F. Joliot-Curie 14A 50-383 Wrocław Poland
| | - Marcin Wolański
- Department of Molecular Microbiology Faculty of Biotechnology University of Wrocław ul. F. Joliot-Curie 14A 50-383 Wrocław Poland
| | - Bertolt Gust
- Department of Pharmaceutical Biology Institute of Pharmaceutical Sciences University of Tübingen Auf der Morgenstelle 8 72076 Tübingen Germany
| | - Mirna Rodriguez
- Quadriga BioSciences, Inc. 339 S. San Antonio Road, Suite 2A Los Altos CA 94022 USA
| | - Wolf‐Nicolas Fischer
- Quadriga BioSciences, Inc. 339 S. San Antonio Road, Suite 2A Los Altos CA 94022 USA
| | - Bernd Jandeleit
- Quadriga BioSciences, Inc. 339 S. San Antonio Road, Suite 2A Los Altos CA 94022 USA
| | - Jolanta Zakrzewska‐Czerwińska
- Department of Molecular Microbiology Faculty of Biotechnology University of Wrocław ul. F. Joliot-Curie 14A 50-383 Wrocław Poland
| | - Wolfgang Wohlleben
- Department of Microbiology and Biotechnology Interfaculty Institute of Microbiology and Infection Medicine University of Tübingen Auf der Morgenstelle 28 72076 Tübingen Germany
| | - Evi Stegmann
- Department of Microbiology and Biotechnology Interfaculty Institute of Microbiology and Infection Medicine University of Tübingen Auf der Morgenstelle 28 72076 Tübingen Germany
| | - Pierre Koch
- Department of Pharmaceutical Chemistry Institute of Pharmaceutical Sciences University of Tübingen Auf der Morgenstelle 8 72076 Tübingen Germany
| | - Carmen Méndez
- Departamento de Biología Funcional e Instituto Universitario de Oncología del Principado de Asturias Universidad de Oviedo and Instituto de Investigación Sanitaria de Asturias (ISPA) c/ Julián Clavería s/n. 33006 Oviedo Spain
| | - Harald Gross
- Department of Pharmaceutical Biology Institute of Pharmaceutical Sciences University of Tübingen Auf der Morgenstelle 8 72076 Tübingen Germany
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Botas A, Eitel M, Schwarz PN, Buchmann A, Costales P, Núñez LE, Cortés J, Morís F, Krawiec M, Wolański M, Gust B, Rodriguez M, Fischer W, Jandeleit B, Zakrzewska‐Czerwińska J, Wohlleben W, Stegmann E, Koch P, Méndez C, Gross H. Genetic Engineering in Combination with Semi-Synthesis Leads to a New Route for Gram-Scale Production of the Immunosuppressive Natural Product Brasilicardin A. Angew Chem Int Ed Engl 2021; 60:13536-13541. [PMID: 33768597 PMCID: PMC8251711 DOI: 10.1002/anie.202015852] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [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: 11/27/2020] [Revised: 02/28/2021] [Indexed: 01/01/2023]
Abstract
Brasilicardin A (1) consists of an unusual anti/syn/anti-perhydrophenanthrene skeleton with a carbohydrate side chain and an amino acid moiety. It exhibits potent immunosuppressive activity, yet its mode of action differs from standard drugs that are currently in use. Further pre-clinical evaluation of this promising, biologically active natural product is hampered by restricted access to the ready material, as its synthesis requires both a low-yielding fermentation process using a pathogenic organism and an elaborate, multi-step total synthesis. Our semi-synthetic approach included a) the heterologous expression of the brasilicardin A gene cluster in different non-pathogenic bacterial strains producing brasilicardin A aglycone (5) in excellent yield and b) the chemical transformation of the aglycone 5 into the trifluoroacetic acid salt of brasilicardin A (1 a) via a short and straightforward five-steps synthetic route. Additionally, we report the first preclinical data for brasilicardin A.
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Affiliation(s)
- Alma Botas
- Departamento de Biología Funcional e Instituto Universitario de Oncología del Principado de AsturiasUniversidad de Oviedo and Instituto de Investigación Sanitaria de Asturias (ISPA)c/ Julián Clavería s/n.33006OviedoSpain
| | - Michael Eitel
- Department of Pharmaceutical ChemistryInstitute of Pharmaceutical SciencesUniversity of TübingenAuf der Morgenstelle 872076TübingenGermany
| | - Paul N. Schwarz
- Department of Microbiology and BiotechnologyInterfaculty Institute of Microbiology and Infection MedicineUniversity of TübingenAuf der Morgenstelle 2872076TübingenGermany
| | - Anina Buchmann
- Department of Pharmaceutical BiologyInstitute of Pharmaceutical SciencesUniversity of TübingenAuf der Morgenstelle 872076TübingenGermany
| | - Paula Costales
- EntreChem S.L.Vivero Ciencias de la Saludc/ Colegio Santo Domingo de Guzmán, s/n33011OviedoSpain
| | - Luz Elena Núñez
- EntreChem S.L.Vivero Ciencias de la Saludc/ Colegio Santo Domingo de Guzmán, s/n33011OviedoSpain
| | - Jesús Cortés
- EntreChem S.L.Vivero Ciencias de la Saludc/ Colegio Santo Domingo de Guzmán, s/n33011OviedoSpain
| | - Francisco Morís
- EntreChem S.L.Vivero Ciencias de la Saludc/ Colegio Santo Domingo de Guzmán, s/n33011OviedoSpain
| | - Michał Krawiec
- Department of Molecular MicrobiologyFaculty of BiotechnologyUniversity of Wrocławul. F. Joliot-Curie 14A50-383WrocławPoland
| | - Marcin Wolański
- Department of Molecular MicrobiologyFaculty of BiotechnologyUniversity of Wrocławul. F. Joliot-Curie 14A50-383WrocławPoland
| | - Bertolt Gust
- Department of Pharmaceutical BiologyInstitute of Pharmaceutical SciencesUniversity of TübingenAuf der Morgenstelle 872076TübingenGermany
| | - Mirna Rodriguez
- Quadriga BioSciences, Inc.339 S. San Antonio Road, Suite 2ALos AltosCA94022USA
| | | | - Bernd Jandeleit
- Quadriga BioSciences, Inc.339 S. San Antonio Road, Suite 2ALos AltosCA94022USA
| | - Jolanta Zakrzewska‐Czerwińska
- Department of Molecular MicrobiologyFaculty of BiotechnologyUniversity of Wrocławul. F. Joliot-Curie 14A50-383WrocławPoland
| | - Wolfgang Wohlleben
- Department of Microbiology and BiotechnologyInterfaculty Institute of Microbiology and Infection MedicineUniversity of TübingenAuf der Morgenstelle 2872076TübingenGermany
| | - Evi Stegmann
- Department of Microbiology and BiotechnologyInterfaculty Institute of Microbiology and Infection MedicineUniversity of TübingenAuf der Morgenstelle 2872076TübingenGermany
| | - Pierre Koch
- Department of Pharmaceutical ChemistryInstitute of Pharmaceutical SciencesUniversity of TübingenAuf der Morgenstelle 872076TübingenGermany
| | - Carmen Méndez
- Departamento de Biología Funcional e Instituto Universitario de Oncología del Principado de AsturiasUniversidad de Oviedo and Instituto de Investigación Sanitaria de Asturias (ISPA)c/ Julián Clavería s/n.33006OviedoSpain
| | - Harald Gross
- Department of Pharmaceutical BiologyInstitute of Pharmaceutical SciencesUniversity of TübingenAuf der Morgenstelle 872076TübingenGermany
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Wolański M, Krawiec M, Schwarz PN, Stegmann E, Wohlleben W, Buchmann A, Gross H, Eitel M, Koch P, Botas A, Méndez C, Núñez LE, Morís F, Cortés J, Zakrzewska‐Czerwińska J. A novel LysR-type regulator negatively affects biosynthesis of the immunosuppressant brasilicardin. Eng Life Sci 2021; 21:4-18. [PMID: 33531886 PMCID: PMC7837296 DOI: 10.1002/elsc.202000038] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2020] [Revised: 09/29/2020] [Accepted: 10/08/2020] [Indexed: 11/16/2022] Open
Abstract
Brasilicardin A (BraA) is a promising immunosuppressive compound produced naturally by the pathogenic bacterium Nocardia terpenica IFM 0406. Heterologous host expression of brasilicardin gene cluster showed to be efficient to bypass the safety issues, low production levels and lack of genetic tools related with the use of native producer. Further improvement of production yields requires better understanding of gene expression regulation within the BraA biosynthetic gene cluster (Bra-BGC); however, the only so far known regulator of this gene cluster is Bra12. In this study, we discovered the protein LysRNt, a novel member of the LysR-type transcriptional regulator family, as a regulator of the Bra-BGC. Using in vitro approaches, we identified the gene promoters which are controlled by LysRNt within the Bra-BGC. Corresponding genes encode enzymes involved in BraA biosynthesis as well as the key Bra-BGC regulator Bra12. Importantly, we provide in vivo evidence that LysRNt negatively affects production of brasilicardin congeners in the heterologous host Amycolatopsis japonicum. Finally, we demonstrate that some of the pathway related metabolites, and their chemical analogs, can interact with LysRNt which in turn affects its DNA-binding activity.
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Affiliation(s)
| | - Michał Krawiec
- Faculty of BiotechnologyUniversity of WrocławWrocławPoland
| | - Paul N. Schwarz
- Department of Microbiology and BiotechnologyInterfaculty Institute of Microbiology and Infection MedicineUniversity of TübingenTübingenGermany
| | - Evi Stegmann
- Department of Microbiology and BiotechnologyInterfaculty Institute of Microbiology and Infection MedicineUniversity of TübingenTübingenGermany
- German Centre for Infection Research (DZIF)Partner Site TübingenTübingenGermany
| | - Wolfgang Wohlleben
- Department of Microbiology and BiotechnologyInterfaculty Institute of Microbiology and Infection MedicineUniversity of TübingenTübingenGermany
- German Centre for Infection Research (DZIF)Partner Site TübingenTübingenGermany
| | - Anina Buchmann
- German Centre for Infection Research (DZIF)Partner Site TübingenTübingenGermany
- Department of Pharmaceutical BiologyInstitute of Pharmaceutical SciencesUniversity of TübingenTübingenGermany
- Present address:
Institute of Biochemical EngineeringUniversity of StuttgartStuttgartGermany
| | - Harald Gross
- German Centre for Infection Research (DZIF)Partner Site TübingenTübingenGermany
- Department of Pharmaceutical BiologyInstitute of Pharmaceutical SciencesUniversity of TübingenTübingenGermany
| | - Michael Eitel
- Department of Pharmaceutical ChemistryInstitute of Pharmaceutical SciencesUniversity of TübingenTübingenGermany
| | - Pierre Koch
- Department of Pharmaceutical ChemistryInstitute of Pharmaceutical SciencesUniversity of TübingenTübingenGermany
| | - Alma Botas
- Departamento de Biología Funcional e Instituto Universitario de Oncología del Principado de AsturiasUniversidad de OviedoOviedoSpain
| | - Carmen Méndez
- Departamento de Biología Funcional e Instituto Universitario de Oncología del Principado de AsturiasUniversidad de OviedoOviedoSpain
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5
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Masiewicz P, Brzostek A, Wolański M, Dziadek J, Zakrzewska-Czerwińska J. Correction: A Novel Role of the PrpR as a Transcription Factor Involved in the Regulation of Methylcitrate Pathway in Mycobacterium tuberculosis. PLoS One 2018; 13:e0208565. [PMID: 30507947 PMCID: PMC6277100 DOI: 10.1371/journal.pone.0208565] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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6
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Wolański M, Łebkowski T, Kois-Ostrowska A, Zettler J, Apel AK, Jakimowicz D, Zakrzewska-Czerwińska J. Two transcription factors, CabA and CabR, are independently involved in multilevel regulation of the biosynthetic gene cluster encoding the novel aminocoumarin, cacibiocin. Appl Microbiol Biotechnol 2015; 100:3147-64. [PMID: 26637421 DOI: 10.1007/s00253-015-7196-7] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [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: 10/02/2015] [Revised: 11/19/2015] [Accepted: 11/22/2015] [Indexed: 11/30/2022]
Abstract
Aminocoumarins are potent antibiotics belonging to a relatively small group of secondary metabolites produced by actinomycetes. Genome mining of Catenulispora acidiphila has recently led to the discovery of a gene cluster responsible for biosynthesis of novel aminocoumarins, cacibiocins. However, regulation of the expression of this novel gene cluster has not yet been analyzed. In this study, we identify transcriptional regulators of the cacibiocin gene cluster. Using a heterologous expression system, we show that the CabA and CabR proteins encoded by cabA and cabR genes in the cacibiocin gene cluster control the expression of genes involved in the biosynthesis, modification, regulation, and potentially, efflux/resistance of cacibiocins. CabA positively regulates the expression of cabH (the first gene in the cabHIYJKL operon) and cabhal genes encoding key enzymes responsible for the biosynthesis and halogenation of the aminocoumarin moiety, respectively. We provide evidence that CabA is a direct inducer of cacibiocin production, whereas the second transcriptional factor, CabR, is involved in the negative regulation of its own gene and cabT-the latter of which encodes a putative cacibiocin transporter. We also demonstrate that CabR activity is negatively regulated in vitro by aminocoumarin compounds, suggesting the existence of analogous regulation in vivo. Finally, we propose a model of multilevel regulation of gene transcription in the cacibiocin gene cluster by CabA and CabR.
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Affiliation(s)
- Marcin Wolański
- Faculty of Biotechnology, University of Wrocław, ul. Joliot-Curie 14A, 50-383, Wrocław, Poland.
| | - Tomasz Łebkowski
- Faculty of Biotechnology, University of Wrocław, ul. Joliot-Curie 14A, 50-383, Wrocław, Poland
| | | | - Judith Zettler
- Pharmazeutische Biologie, Eberhard Karls Universität Tübingen, Auf der Morgenstelle 8, 72076, Tübingen, Germany.,German Centre for Infection Research (DZIF), Partner Site, Tübingen, Germany
| | - Alexander K Apel
- Pharmazeutische Biologie, Eberhard Karls Universität Tübingen, Auf der Morgenstelle 8, 72076, Tübingen, Germany.,German Centre for Infection Research (DZIF), Partner Site, Tübingen, Germany
| | - Dagmara Jakimowicz
- Faculty of Biotechnology, University of Wrocław, ul. Joliot-Curie 14A, 50-383, Wrocław, Poland.,Ludwik Hirszfeld Institute of Immunology and Experimental Therapy, Polish Academy of Sciences, ul. Weigla 12, 53-114, Wrocław, Poland
| | - Jolanta Zakrzewska-Czerwińska
- Faculty of Biotechnology, University of Wrocław, ul. Joliot-Curie 14A, 50-383, Wrocław, Poland.,Ludwik Hirszfeld Institute of Immunology and Experimental Therapy, Polish Academy of Sciences, ul. Weigla 12, 53-114, Wrocław, Poland
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Wolański M, Donczew R, Zawilak-Pawlik A, Zakrzewska-Czerwińska J. oriC-encoded instructions for the initiation of bacterial chromosome replication. Front Microbiol 2015; 5:735. [PMID: 25610430 PMCID: PMC4285127 DOI: 10.3389/fmicb.2014.00735] [Citation(s) in RCA: 57] [Impact Index Per Article: 6.3] [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: 10/31/2014] [Accepted: 12/05/2014] [Indexed: 01/09/2023] Open
Abstract
Replication of the bacterial chromosome initiates at a single origin of replication that is called oriC. This occurs via the concerted action of numerous proteins, including DnaA, which acts as an initiator. The origin sequences vary across species, but all bacterial oriCs contain the information necessary to guide assembly of the DnaA protein complex at oriC, triggering the unwinding of DNA and the beginning of replication. The requisite information is encoded in the unique arrangement of specific sequences called DnaA boxes, which form a framework for DnaA binding and assembly. Other crucial sequences of bacterial origin include DNA unwinding element (DUE, which designates the site at which oriC melts under the influence of DnaA) and binding sites for additional proteins that positively or negatively regulate the initiation process. In this review, we summarize our current knowledge and understanding of the information encoded in bacterial origins of chromosomal replication, particularly in the context of replication initiation and its regulation. We show that oriC encoded instructions allow not only for initiation but also for precise regulation of replication initiation and coordination of chromosomal replication with the cell cycle (also in response to environmental signals). We focus on Escherichia coli, and then expand our discussion to include several other microorganisms in which additional regulatory proteins have been recently shown to be involved in coordinating replication initiation to other cellular processes (e.g., Bacillus, Caulobacter, Helicobacter, Mycobacterium, and Streptomyces). We discuss diversity of bacterial oriC regions with the main focus on roles of individual DNA recognition sequences at oriC in binding the initiator and regulatory proteins as well as the overall impact of these proteins on the formation of initiation complex.
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Affiliation(s)
- Marcin Wolański
- Department of Molecular Microbiology, Faculty of Biotechnology, University of Wrocław Wrocław, Poland
| | - Rafał Donczew
- Department of Microbiology, Ludwik Hirszfeld Institute of Immunology and Experimental Therapy, Polish Academy of Sciences Wrocław, Poland
| | - Anna Zawilak-Pawlik
- Department of Microbiology, Ludwik Hirszfeld Institute of Immunology and Experimental Therapy, Polish Academy of Sciences Wrocław, Poland
| | - Jolanta Zakrzewska-Czerwińska
- Department of Molecular Microbiology, Faculty of Biotechnology, University of Wrocław Wrocław, Poland ; Department of Microbiology, Ludwik Hirszfeld Institute of Immunology and Experimental Therapy, Polish Academy of Sciences Wrocław, Poland
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Masiewicz P, Wolański M, Brzostek A, Dziadek J, Zakrzewska-Czerwińska J. Erratum to: Propionate represses the dnaA gene via the methylcitrate pathway-regulating transcription factor, PrpR, in Mycobacterium tuberculosis. Antonie Van Leeuwenhoek 2014. [PMCID: PMC4643565 DOI: 10.1007/s10482-014-0278-1] [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] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Paweł Masiewicz
- />Department of Microbiology, Ludwik Hirszfeld Institute of Immunology and Experimental Therapy, Polish Academy of Sciences, Wrocław, Poland
- />Structural and Computational Biology Unit, European Molecular Biology Laboratory, Heidelberg, Germany
| | - Marcin Wolański
- />Department of Molecular Microbiology, Faculty of Biotechnology, University of Wrocław, Wrocław, Poland
| | - Anna Brzostek
- />Laboratory of Mycobacterium Genetics and Physiology, Institute of Medical Biology, Polish Academy of Sciences, Łódź, Poland
| | - Jarosław Dziadek
- />Laboratory of Mycobacterium Genetics and Physiology, Institute of Medical Biology, Polish Academy of Sciences, Łódź, Poland
| | - Jolanta Zakrzewska-Czerwińska
- />Department of Microbiology, Ludwik Hirszfeld Institute of Immunology and Experimental Therapy, Polish Academy of Sciences, Wrocław, Poland
- />Department of Molecular Microbiology, Faculty of Biotechnology, University of Wrocław, Wrocław, Poland
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9
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Wolański M, Jakimowicz D, Zakrzewska-Czerwińska J. Fifty years after the replicon hypothesis: cell-specific master regulators as new players in chromosome replication control. J Bacteriol 2014; 196:2901-11. [PMID: 24914187 PMCID: PMC4135643 DOI: 10.1128/jb.01706-14] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [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: 11/20/2022] Open
Abstract
Numerous free-living bacteria undergo complex differentiation in response to unfavorable environmental conditions or as part of their natural cell cycle. Developmental programs require the de novo expression of several sets of genes responsible for morphological, physiological, and metabolic changes, such as spore/endospore formation, the generation of flagella, and the synthesis of antibiotics. Notably, the frequency of chromosomal replication initiation events must also be adjusted with respect to the developmental stage in order to ensure that each nascent cell receives a single copy of the chromosomal DNA. In this review, we focus on the master transcriptional factors, Spo0A, CtrA, and AdpA, which coordinate developmental program and which were recently demonstrated to control chromosome replication. We summarize the current state of knowledge on the role of these developmental regulators in synchronizing the replication with cell differentiation in Bacillus subtilis, Caulobacter crescentus, and Streptomyces coelicolor, respectively.
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Affiliation(s)
- Marcin Wolański
- Faculty of Biotechnology, University of Wrocław, Wrocław, Poland
| | - Dagmara Jakimowicz
- Faculty of Biotechnology, University of Wrocław, Wrocław, Poland Department of Microbiology, Ludwik Hirszfeld Institute of Immunology and Experimental Therapy, Polish Academy of Sciences, Wrocław, Poland
| | - Jolanta Zakrzewska-Czerwińska
- Faculty of Biotechnology, University of Wrocław, Wrocław, Poland Department of Microbiology, Ludwik Hirszfeld Institute of Immunology and Experimental Therapy, Polish Academy of Sciences, Wrocław, Poland
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Wolański M, Jakimowicz D, Zakrzewska-Czerwińska J. AdpA, key regulator for morphological differentiation regulates bacterial chromosome replication. Open Biol 2013; 2:120097. [PMID: 22870392 PMCID: PMC3411110 DOI: 10.1098/rsob.120097] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.3] [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: 05/23/2012] [Accepted: 07/02/2012] [Indexed: 12/26/2022] Open
Abstract
AdpA, one of the most pleiotropic transcription regulators in bacteria, controls expression of several dozen genes during Streptomyces differentiation. Here, we report a novel function for the AdpA protein: inhibitor of chromosome replication at the initiation stage. AdpA specifically recognizes the 5′ region of the Streptomyces coelicolor replication origin (oriC). Our in vitro results show that binding of AdpA protein decreased access of initiator protein (DnaA) to the oriC region. We also found that mutation of AdpA-binding sequences increased the accessibility of oriC to DnaA, which led to more frequent replication and acceleration of Streptomyces differentiation (at the stage of aerial hyphae formation). Moreover, we also provide evidence that AdpA and DnaA proteins compete for oriC binding in an ATP-dependent manner, with low ATP levels causing preferential binding of AdpA, and high ATP levels causing dissociation of AdpA and association of DnaA. This would be consistent with a role for ATP levels in determining when aerial hyphae emerge.
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Affiliation(s)
- Marcin Wolański
- Ludwik Hirszfeld Institute of Immunology and Experimental Therapy, Polish Academy of Sciences, ul. Weigla 12, 53114 Wrocław, Poland
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Masiewicz P, Brzostek A, Wolański M, Dziadek J, Zakrzewska-Czerwińska J. A novel role of the PrpR as a transcription factor involved in the regulation of methylcitrate pathway in Mycobacterium tuberculosis. PLoS One 2012; 7:e43651. [PMID: 22916289 PMCID: PMC3420887 DOI: 10.1371/journal.pone.0043651] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.5] [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: 04/04/2012] [Accepted: 07/23/2012] [Indexed: 01/21/2023] Open
Abstract
Mycobacterium tuberculosis, the pathogen that causes tuberculosis, presumably utilizes fatty acids as a major carbon source during infection within the host. Metabolism of even-chain-length fatty acids yields acetyl-CoA, whereas metabolism of odd-chain-length fatty acids additionally yields propionyl-CoA. Utilization of these compounds by tubercle bacilli requires functional glyoxylate and methylcitrate cycles, respectively. Enzymes involved in both pathways are essential for M. tuberculosis viability and persistence during growth on fatty acids. However, little is known about regulatory factors responsible for adjusting the expression of genes encoding these enzymes to particular growth conditions. Here, we characterized the novel role of PrpR as a transcription factor that is directly involved in regulating genes encoding the key enzymes of methylcitrate (methylcitrate dehydratase [PrpD] and methylcitrate synthase [PrpC]) and glyoxylate (isocitrate lyase [Icl1]) cycles. Using cell-free systems and intact cells, we demonstrated an interaction of PrpR protein with prpDC and icl1 promoter regions and identified a consensus sequence recognized by PrpR. Moreover, we showed that an M. tuberculosis prpR-deletion strain exhibits impaired growth in vitro on propionate as the sole carbon source. Real-time quantitative reverse transcription-polymerase chain reaction confirmed that PrpR acts as a transcriptional activator of prpDC and icl1 genes when propionate is the main carbon source. Similar results were also obtained for a non-pathogenic Mycobacterium smegmatis strain. Additionally, we found that ramB, a prpR paralog that controls the glyoxylate cycle, is negatively regulated by PrpR. Our data demonstrate that PrpR is essential for the utilization of odd-chain-length fatty acids by tubercle bacilli. Since PrpR also acts as a ramB repressor, our findings suggest that it plays a key role in regulating expression of enzymes involved in both glyoxylate and methylcitrate pathways.
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Affiliation(s)
- Paweł Masiewicz
- Department of Microbiology, Ludwik Hirszfeld Institute of Immunology and Experimental Therapy, Polish Academy of Sciences, Wrocław, Poland
| | - Anna Brzostek
- Laboratory of Mycobacterium Genetics and Physiology, Institute of Medical Biology, Polish Academy of Sciences, Łódź, Poland
| | - Marcin Wolański
- Department of Molecular Microbiology, Faculty of Biotechnology, University of Wrocław, Wrocław, Poland
| | - Jarosław Dziadek
- Laboratory of Mycobacterium Genetics and Physiology, Institute of Medical Biology, Polish Academy of Sciences, Łódź, Poland
| | - Jolanta Zakrzewska-Czerwińska
- Department of Microbiology, Ludwik Hirszfeld Institute of Immunology and Experimental Therapy, Polish Academy of Sciences, Wrocław, Poland
- Department of Molecular Microbiology, Faculty of Biotechnology, University of Wrocław, Wrocław, Poland
- * E-mail:
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Hałoń A, Patrzałek DJ, Boratyńska M, Wolański M, Hałoń Ł. Kidney donation from a patient with cardiac myxoma: a case report. Transplant Proc 2008; 40:1073-8. [PMID: 18555118 DOI: 10.1016/j.transproceed.2008.03.055] [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: 10/22/2022]
Abstract
INTRODUCTION Renal transplantation has still become the preferred method to treat end-stage renal failure. The majority of organs are obtained from individuals with irreversible central nervous system injury. This group is nowadays unsatisfactory and small relative to the needs. A significant percentage of donors may be found among patients primarily suffering from benign neoplasms whose nature does not show malignant potential and do not metastasize. To date, there have been no reports about successful organ transplantation from an organ donor with cardiac myxoma. AIM The aim of this report was to present a successful transplantation of cadaveric kidney grafts from a 61-year-old female donor with a left atrial cardiac myxoma, which initially appeared as an embolic cerebral infarct. The kidney graft recipients were a 51-year-old woman and a 57-year-old man with long-lasting histories of chronic renal failure under treatment by hemodialysis. The transplant function of both kidneys has been satisfactory with a 5-year follow-up. For the present, apart from single event of acute rejection in a male recipient, the patients have maintained stable renal function. Routine accessory examinations did not reveal any changes within the kidney or other organs. To date, a renal biopsy has not been taken. Both recipients are undergoing special follow-up. CONCLUSION Patients with myxoma should be accepted as donors, since the risk of dying on the waiting list is greater than the tumor transfer risk. Exclusion of these potential donors decreases the donor pool and unnecessarily wastes valuable organs.
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Affiliation(s)
- A Hałoń
- Department of Pathological Anatomy, Medical University of Wrocław, Wrocław, Poland.
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Giurg M, Piekielska K, Gębala M, Ditkowski B, Wolański M, Peczyńska‐Czoch W, Młochowski J. Catalytic Oxidative Cyclocondensation ofo‐Aminophenols to 2‐Amino‐3H‐phenoxazin‐3‐ones. SYNTHETIC COMMUN 2007. [DOI: 10.1080/00397910701316136] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Affiliation(s)
- Mirosław Giurg
- a Department of Organic Chemistry, Faculty of Chemistry , Wrocław University of Technology , Wrocław, Poland
| | - Katarzyna Piekielska
- a Department of Organic Chemistry, Faculty of Chemistry , Wrocław University of Technology , Wrocław, Poland
| | - Magdalena Gębala
- a Department of Organic Chemistry, Faculty of Chemistry , Wrocław University of Technology , Wrocław, Poland
| | - Bartosz Ditkowski
- a Department of Organic Chemistry, Faculty of Chemistry , Wrocław University of Technology , Wrocław, Poland
| | - Marcin Wolański
- a Department of Organic Chemistry, Faculty of Chemistry , Wrocław University of Technology , Wrocław, Poland
| | - Wanda Peczyńska‐Czoch
- a Department of Organic Chemistry, Faculty of Chemistry , Wrocław University of Technology , Wrocław, Poland
| | - Jacek Młochowski
- a Department of Organic Chemistry, Faculty of Chemistry , Wrocław University of Technology , Wrocław, Poland
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