Fluoride-Controlled Riboswitch-Based Dampening of Gene Expression for Cloning Potent Promoters
Bioreporter systems based on detectable enzyme activity, such as that of beta-galactosidase or luciferase, are key in novel bacterial promoter discovery and study. While these systems permit quantification of gene expression, their use is limited by the toxicity of the expressed reporter enzymes in...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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Frontiers Media S.A.
2022-01-01
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| Series: | Frontiers in Genetics |
| Subjects: | |
| Online Access: | https://www.frontiersin.org/articles/10.3389/fgene.2021.591543/full |
| _version_ | 1798014726207176704 |
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| author | Vesta Korniakova Aurélie Devinck Marie-Christine Groleau Eric Déziel Jonathan Perreault |
| author_facet | Vesta Korniakova Aurélie Devinck Marie-Christine Groleau Eric Déziel Jonathan Perreault |
| author_sort | Vesta Korniakova |
| collection | DOAJ |
| description | Bioreporter systems based on detectable enzyme activity, such as that of beta-galactosidase or luciferase, are key in novel bacterial promoter discovery and study. While these systems permit quantification of gene expression, their use is limited by the toxicity of the expressed reporter enzymes in a given host. Indeed, the most potent promoters may be overlooked if their activity causes a lethal overproduction of the reporter genes when screening for transcriptional activity of potential promoter sequences with the luxCDABE cassette. To overcome this limitation, a variation of the mini-CTX-lux plasmid has been designed which allows reduction of promoter activity via the addition of an adjacent fluoride riboswitch. The riboswitch adds a layer of regulation between the promoter and the reporter gene, allowing cloning of stronger promoters by weakening expression, while giving the potential to induce with fluoride to provide a good signal for weaker promoters, thus circumventing limitations associated with reporter toxicity. We noticed the riboswitch potential portability issues between species, suggesting caution when using riboswitches non-native to the species where it is being used. This study introduces a new molecular biology tool which will allow for the identification of previously unverifiable or uncharacterized potent promoters and also provides a cloning vector for translational fusion with luciferase in a plasmid compatible with many species such as from the genera Burkholderia and Pseudomonas. |
| first_indexed | 2024-04-11T15:22:50Z |
| format | Article |
| id | doaj.art-d00c4a1ad77d4377be6076fbb5260694 |
| institution | Directory Open Access Journal |
| issn | 1664-8021 |
| language | English |
| last_indexed | 2024-04-11T15:22:50Z |
| publishDate | 2022-01-01 |
| publisher | Frontiers Media S.A. |
| record_format | Article |
| series | Frontiers in Genetics |
| spelling | doaj.art-d00c4a1ad77d4377be6076fbb52606942022-12-22T04:16:20ZengFrontiers Media S.A.Frontiers in Genetics1664-80212022-01-011210.3389/fgene.2021.591543591543Fluoride-Controlled Riboswitch-Based Dampening of Gene Expression for Cloning Potent PromotersVesta KorniakovaAurélie DevinckMarie-Christine GroleauEric DézielJonathan PerreaultBioreporter systems based on detectable enzyme activity, such as that of beta-galactosidase or luciferase, are key in novel bacterial promoter discovery and study. While these systems permit quantification of gene expression, their use is limited by the toxicity of the expressed reporter enzymes in a given host. Indeed, the most potent promoters may be overlooked if their activity causes a lethal overproduction of the reporter genes when screening for transcriptional activity of potential promoter sequences with the luxCDABE cassette. To overcome this limitation, a variation of the mini-CTX-lux plasmid has been designed which allows reduction of promoter activity via the addition of an adjacent fluoride riboswitch. The riboswitch adds a layer of regulation between the promoter and the reporter gene, allowing cloning of stronger promoters by weakening expression, while giving the potential to induce with fluoride to provide a good signal for weaker promoters, thus circumventing limitations associated with reporter toxicity. We noticed the riboswitch potential portability issues between species, suggesting caution when using riboswitches non-native to the species where it is being used. This study introduces a new molecular biology tool which will allow for the identification of previously unverifiable or uncharacterized potent promoters and also provides a cloning vector for translational fusion with luciferase in a plasmid compatible with many species such as from the genera Burkholderia and Pseudomonas.https://www.frontiersin.org/articles/10.3389/fgene.2021.591543/fullplasmidpromoterregulatory regionluciferasetranslational fusionfluoride riboswitch |
| spellingShingle | Vesta Korniakova Aurélie Devinck Marie-Christine Groleau Eric Déziel Jonathan Perreault Fluoride-Controlled Riboswitch-Based Dampening of Gene Expression for Cloning Potent Promoters Frontiers in Genetics plasmid promoter regulatory region luciferase translational fusion fluoride riboswitch |
| title | Fluoride-Controlled Riboswitch-Based Dampening of Gene Expression for Cloning Potent Promoters |
| title_full | Fluoride-Controlled Riboswitch-Based Dampening of Gene Expression for Cloning Potent Promoters |
| title_fullStr | Fluoride-Controlled Riboswitch-Based Dampening of Gene Expression for Cloning Potent Promoters |
| title_full_unstemmed | Fluoride-Controlled Riboswitch-Based Dampening of Gene Expression for Cloning Potent Promoters |
| title_short | Fluoride-Controlled Riboswitch-Based Dampening of Gene Expression for Cloning Potent Promoters |
| title_sort | fluoride controlled riboswitch based dampening of gene expression for cloning potent promoters |
| topic | plasmid promoter regulatory region luciferase translational fusion fluoride riboswitch |
| url | https://www.frontiersin.org/articles/10.3389/fgene.2021.591543/full |
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