PMID:19091747: Difference between revisions

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<span style = 'font-size: large'> '''Davidge, KS, Sanguinetti, G, Yee, CH, Cox, AG, McLeod, CW, Monk, CE, Mann, BE, Motterlini, R and Poole, RK'''  (2009) Carbon monoxide-releasing antibacterial molecules target respiration and global transcriptional regulators.''J. Biol. Chem.'' '''284''':4516-24</span>
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|{{TableHeadingColor}} |'''Abstract''' || <protect>Carbon monoxide, a classical respiratory inhibitor, also exerts vasodilatory, anti-inflammatory, and antiapoptotic effects. CO-releasing molecules have therapeutic value, increasing phagocytosis and reducing sepsis-induced lethality. Here we identify for the first time the bacterial targets of Ru(CO)(3)Cl(glycinate) (CORM-3), a ruthenium-based carbonyl that liberates CO rapidly under physiological conditions. Contrary to the expectation that CO would be preferentially inhibitory at low oxygen tensions or anaerobically, Escherichia coli cultures were also sensitive to CORM-3 at concentrations equimolar with oxygen. CORM-3, assayed as ruthenium, was taken up by bacteria and rapidly delivered CO intracellularly to terminal oxidases. Microarray analysis of CORM-3-treated cells revealed extensively modified gene expression, notably down-regulation of genes encoding key aerobic respiratory complexes. Genes involved in metal metabolism, homeostasis, or transport were also differentially expressed, and free intracellular zinc levels were elevated. Probabilistic modeling of transcriptomic data identified the global transcription regulators ArcA, CRP, Fis, FNR, Fur, BaeR, CpxR, and IHF as targets and potential CO sensors. Our discovery that CORM-3 is an effective inhibitor and global regulator of gene expression, especially under aerobic conditions, has important implications for administration of CO-releasing agents in sepsis and inflammation.</protect>
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'''No author listed''' (2009) Carbon monoxide-releasing antibacterial molecules target respiration and global transcriptional regulators. ''J. Biol. Chem.'' '''284''':4516-24
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!align=left  |Abstract
*  [http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=pubmed&dopt=Abstract&list_uids=19091747 PubMed]
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Carbon monoxide, a classical respiratory inhibitor, also exerts vasodilatory, anti-inflammatory, and antiapoptotic effects. CO-releasing molecules have therapeutic value, increasing phagocytosis and reducing sepsis-induced lethality. Here we identify for the first time the bacterial targets of Ru(CO)(3)Cl(glycinate) (CORM-3), a ruthenium-based carbonyl that liberates CO rapidly under physiological conditions. Contrary to the expectation that CO would be preferentially inhibitory at low oxygen tensions or anaerobically, Escherichia coli cultures were also sensitive to CORM-3 at concentrations equimolar with oxygen. CORM-3, assayed as ruthenium, was taken up by bacteria and rapidly delivered CO intracellularly to terminal oxidases. Microarray analysis of CORM-3-treated cells revealed extensively modified gene expression, notably down-regulation of genes encoding key aerobic respiratory complexes. Genes involved in metal metabolism, homeostasis, or transport were also differentially expressed, and free intracellular zinc levels were elevated. Probabilistic modeling of transcriptomic data identified the global transcription regulators ArcA, CRP, Fis, FNR, Fur, BaeR, CpxR, and IHF as targets and potential CO sensors. Our discovery that CORM-3 is an effective inhibitor and global regulator of gene expression, especially under aerobic conditions, has important implications for administration of CO-releasing agents in sepsis and inflammation.
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[http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=pubmed&dopt=Abstract&list_uids=19091747 PubMed]
Online version:[http://dx.doi.org/10.1074/jbc.M808210200 10.1074/jbc.M808210200]
Online version:[http://dx.doi.org/10.1074/jbc.M808210200 10.1074/jbc.M808210200]
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!align=left  |Keywords
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Anaerobiosis/drug effects; Anaerobiosis/physiology; Anti-Bacterial Agents/metabolism; Anti-Bacterial Agents/pharmacology; Carbon Monoxide/metabolism; Carbon Monoxide/pharmacology; Escherichia coli K12/genetics; Escherichia coli K12/metabolism; Escherichia coli Proteins/biosynthesis; Escherichia coli Proteins/genetics; Gene Expression Profiling; Gene Expression Regulation, Bacterial/drug effects; Oligonucleotide Array Sequence Analysis; Organometallic Compounds/metabolism; Organometallic Compounds/pharmacology; Transcription Factors/biosynthesis; Transcription Factors/genetics
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==Significance {{HelpIcon|Help:Literature}} ==
==Significance {{HelpIcon|Help:Literature}} ==
{{LitSignificance}}
{{LitSignificance}}

Revision as of 19:06, 1 September 2013

Citation

No author listed (2009) Carbon monoxide-releasing antibacterial molecules target respiration and global transcriptional regulators. J. Biol. Chem. 284:4516-24

Abstract

Carbon monoxide, a classical respiratory inhibitor, also exerts vasodilatory, anti-inflammatory, and antiapoptotic effects. CO-releasing molecules have therapeutic value, increasing phagocytosis and reducing sepsis-induced lethality. Here we identify for the first time the bacterial targets of Ru(CO)(3)Cl(glycinate) (CORM-3), a ruthenium-based carbonyl that liberates CO rapidly under physiological conditions. Contrary to the expectation that CO would be preferentially inhibitory at low oxygen tensions or anaerobically, Escherichia coli cultures were also sensitive to CORM-3 at concentrations equimolar with oxygen. CORM-3, assayed as ruthenium, was taken up by bacteria and rapidly delivered CO intracellularly to terminal oxidases. Microarray analysis of CORM-3-treated cells revealed extensively modified gene expression, notably down-regulation of genes encoding key aerobic respiratory complexes. Genes involved in metal metabolism, homeostasis, or transport were also differentially expressed, and free intracellular zinc levels were elevated. Probabilistic modeling of transcriptomic data identified the global transcription regulators ArcA, CRP, Fis, FNR, Fur, BaeR, CpxR, and IHF as targets and potential CO sensors. Our discovery that CORM-3 is an effective inhibitor and global regulator of gene expression, especially under aerobic conditions, has important implications for administration of CO-releasing agents in sepsis and inflammation.

Links

PubMed Online version:10.1074/jbc.M808210200

Keywords

Anaerobiosis/drug effects; Anaerobiosis/physiology; Anti-Bacterial Agents/metabolism; Anti-Bacterial Agents/pharmacology; Carbon Monoxide/metabolism; Carbon Monoxide/pharmacology; Escherichia coli K12/genetics; Escherichia coli K12/metabolism; Escherichia coli Proteins/biosynthesis; Escherichia coli Proteins/genetics; Gene Expression Profiling; Gene Expression Regulation, Bacterial/drug effects; Oligonucleotide Array Sequence Analysis; Organometallic Compounds/metabolism; Organometallic Compounds/pharmacology; Transcription Factors/biosynthesis; Transcription Factors/genetics

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Annotations

Gene product Qualifier GO ID GO term name Evidence Code with/from Aspect Notes Status
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EcoliWiki Links

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See also

  1. GEO Page: E-GEOD-12877
  2. GEO Page: E-GEOD-12878
  3. ArrayExpress Accession E-GEOD-13048
  4. Omics Publication E-GEOD-12877
  5. Omics Publication E-GEOD-21878

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