Targeting the replication initiator of the second Vibrio chromosome: towards generation of vibrionaceae-specific antimicrobial agents.
The Vibrionaceae is comprised of numerous aquatic species and includes several human pathogens, such as Vibrio cholerae, the cause of cholera. All organisms in this family have two chromosomes, and replication of the smaller one depends on rctB, a gene that is restricted to the Vibrionaceae. Given t...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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Public Library of Science (PLoS)
2009-11-01
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| Series: | PLoS Pathogens |
| Online Access: | http://europepmc.org/articles/PMC2773409?pdf=render |
| _version_ | 1818194079415009280 |
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| author | Yoshiharu Yamaichi Stéphane Duigou Elizabeth A Shakhnovich Matthew K Waldor |
| author_facet | Yoshiharu Yamaichi Stéphane Duigou Elizabeth A Shakhnovich Matthew K Waldor |
| author_sort | Yoshiharu Yamaichi |
| collection | DOAJ |
| description | The Vibrionaceae is comprised of numerous aquatic species and includes several human pathogens, such as Vibrio cholerae, the cause of cholera. All organisms in this family have two chromosomes, and replication of the smaller one depends on rctB, a gene that is restricted to the Vibrionaceae. Given the increasing prevalence of multi-drug resistance in pathogenic vibrios, there is a need for new targets and drugs to combat these pathogens. Here, we carried out a high throughput cell-based screen to find small molecule inhibitors of RctB. We identified a compound that blocked growth of an E. coli strain bearing an rctB-dependent plasmid but did not influence growth of E. coli lacking this plasmid. This compound, designated vibrepin, had potent cidal activity against V. cholerae and inhibited the growth of all vibrio species tested. Vibrepin blocked RctB oriCII unwinding, apparently by promoting formation of large non-functional RctB complexes. Although vibrepin also appears to have targets other than RctB, our findings suggest that RctB is an attractive target for generation of novel antibiotics that only block growth of vibrios. Vibrio-specific agents, unlike antibiotics currently used in clinical practice, will not engender resistance in the normal human flora or in non-vibrio environmental microorganisms. |
| first_indexed | 2024-12-12T00:56:35Z |
| format | Article |
| id | doaj.art-741d1927dadf47c38b115088e7cfffab |
| institution | Directory Open Access Journal |
| issn | 1553-7366 1553-7374 |
| language | English |
| last_indexed | 2024-12-12T00:56:35Z |
| publishDate | 2009-11-01 |
| publisher | Public Library of Science (PLoS) |
| record_format | Article |
| series | PLoS Pathogens |
| spelling | doaj.art-741d1927dadf47c38b115088e7cfffab2022-12-22T00:43:52ZengPublic Library of Science (PLoS)PLoS Pathogens1553-73661553-73742009-11-01511e100066310.1371/journal.ppat.1000663Targeting the replication initiator of the second Vibrio chromosome: towards generation of vibrionaceae-specific antimicrobial agents.Yoshiharu YamaichiStéphane DuigouElizabeth A ShakhnovichMatthew K WaldorThe Vibrionaceae is comprised of numerous aquatic species and includes several human pathogens, such as Vibrio cholerae, the cause of cholera. All organisms in this family have two chromosomes, and replication of the smaller one depends on rctB, a gene that is restricted to the Vibrionaceae. Given the increasing prevalence of multi-drug resistance in pathogenic vibrios, there is a need for new targets and drugs to combat these pathogens. Here, we carried out a high throughput cell-based screen to find small molecule inhibitors of RctB. We identified a compound that blocked growth of an E. coli strain bearing an rctB-dependent plasmid but did not influence growth of E. coli lacking this plasmid. This compound, designated vibrepin, had potent cidal activity against V. cholerae and inhibited the growth of all vibrio species tested. Vibrepin blocked RctB oriCII unwinding, apparently by promoting formation of large non-functional RctB complexes. Although vibrepin also appears to have targets other than RctB, our findings suggest that RctB is an attractive target for generation of novel antibiotics that only block growth of vibrios. Vibrio-specific agents, unlike antibiotics currently used in clinical practice, will not engender resistance in the normal human flora or in non-vibrio environmental microorganisms.http://europepmc.org/articles/PMC2773409?pdf=render |
| spellingShingle | Yoshiharu Yamaichi Stéphane Duigou Elizabeth A Shakhnovich Matthew K Waldor Targeting the replication initiator of the second Vibrio chromosome: towards generation of vibrionaceae-specific antimicrobial agents. PLoS Pathogens |
| title | Targeting the replication initiator of the second Vibrio chromosome: towards generation of vibrionaceae-specific antimicrobial agents. |
| title_full | Targeting the replication initiator of the second Vibrio chromosome: towards generation of vibrionaceae-specific antimicrobial agents. |
| title_fullStr | Targeting the replication initiator of the second Vibrio chromosome: towards generation of vibrionaceae-specific antimicrobial agents. |
| title_full_unstemmed | Targeting the replication initiator of the second Vibrio chromosome: towards generation of vibrionaceae-specific antimicrobial agents. |
| title_short | Targeting the replication initiator of the second Vibrio chromosome: towards generation of vibrionaceae-specific antimicrobial agents. |
| title_sort | targeting the replication initiator of the second vibrio chromosome towards generation of vibrionaceae specific antimicrobial agents |
| url | http://europepmc.org/articles/PMC2773409?pdf=render |
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