Multiple Gene Repression in Cyanobacteria Using CRISPRi
Abstract
We describe the application of clustered regularly interspaced short palindromic repeats interference (CRISPRi) for gene repression in the model cyanobacterium Synechcocystis sp. PCC 6803. The nuclease-deficient Cas9 from the type-II CRISPR/Cas of Streptrococcus pyogenes was used to repress green fluorescent protein (GFP) to negligible levels. CRISPRi was also used to repress formation of carbon storage compounds polyhydroxybutryate (PHB) and glycogen during nitrogen starvation. As an example of the potential of CRISPRi for basic and applied cyanobacteria research, we simultaneously knocked down 4 putative aldehyde reductases and dehydrogenases at 50-95% repression. This work also demonstrates that tightly repressed promoters allow for inducible and reversible CRISPRi in cyanobacteria.
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CRISPRi provides a valuable means for studying gene function and fine-tuning of metabolic pathways without permanent genomic alterations.
“This approach provides a valuable means for studying gene function and fine-tuning of metabolic pathways without permanent genomic alterations [119,120].”
From Cyanobacteria as a Photosynthetic Chassis for Metabolic Pathway Engineering with Heterologous Gene Expression (2026) · cites this paper as [119]
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“This approach provides a valuable means for studying gene function and fine-tuning of metabolic pathways without permanent genomic alterations [119,120].”
- Authors
- Yao, L., Cengic, I., Anfelt, J., & Hudson, E. P.
- Affiliations
- Science for Life Laboratory (SE)
- Corresponding author
- Hudson, Elton P.
- Venue
- ACS Synthetic Biology
- Publisher
- American Chemical Society (ACS)
- Published
- 2015-12-28
- Volume
- 5
- Issue
- 3
- Pages
- 207-212
- ISSN
- 2161-5063 (ISSN-L)
- OpenAlex
- W2234629144
- Cited by
- 246
- References
- 38
- Citations by year
- 2026: 15 · 2025: 16 · 2024: 17 · 2023: 18 · 2022: 24 · 2021: 32 · 2020: 26 · 2019: 33 · 2018: 30 · 2017: 21 · 2016: 14
- FWCI
- 9.40
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- ACS Synthetic Biology (publishedVersion)
- PubMed (publishedVersion)
- Funders
- Svenska Forskningsr?det Formas (213-2011-1655)
- Stiftelsen f?r?Strategisk Forskning (RBP14-0013)
- Topics
- Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › CRISPR and Genetic Engineering
- Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Microbial Metabolic Engineering and Bioproduction
- Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Bacterial Genetics and Biotechnology
- Keywords
- CRISPR interference, gene repression, Synechocystis sp. PCC 6803, cyanobacteria, polyhydroxybutyrate, glycogen, nitrogen starvation, carbon storage, aldehyde reductase, dehydrogenase
- MeSH terms
- Aldehyde Dehydrogenase, Aldehyde Reductase, Cyanobacteria, Bacterial Proteins, Flow Cytometry, Blotting, Western, Down-Regulation, Green Fluorescent Proteins, CRISPR-Cas Systems
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