ArticleJournal of biological engineering2025
Modular and signal-responsive transcriptional regulation using CRISPRi-aided genetic switches in Escherichia coli.
Article in Journal of biological engineering, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers.
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
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Who cites it
4 citing papers in PubMed.
- Toward engineered microbial chassis for growth-production balancing.Synthetic and systems biotechnology · 2027Review
- Programmable microbial therapeutics: advances in engineered bacteria for targeted in vivo delivery and precision medicine.Journal of advanced research · 2026Review
- Bioengineered bacteria in cancer immunotherapy: mechanistic advances, therapeutic strategies and clinical potential.Archives of microbiology · 2026Review
- Expanding the Microbial Genomic Landscape and Biotechnological Applications of CRISPR-Cas Systems.Biology · 2026Review
Corrections and comments
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Authors and funding
5 authors.
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Abstract
backgroundPrecise and dynamic transcriptional regulation is a cornerstone of synthetic biology, enabling the construction of robust genetic circuits and programmable cellular systems. However, existing regulatory tools are often limited by issues such as leaky transcription and insufficient tunability, particularly in high-expression or complex genetic contexts. This study aimed to develop a CRISPRi-aided genetic switch platform that overcomes these limitations and expands the functionality of transcriptional regulation tools in synthetic biology.
resultsWe established a versatile CRISPRi-aided genetic switch platform by integrating transcription factor-based biosensors with the Type V-A FnCas12a CRISPR system. Exploiting the RNase activity of FndCas12a, this system processes CRISPR RNAs (crRNAs) directly from biosensor-responsive mRNA transcripts, enabling precise, signal-dependent transcriptional regulation. To mitigate basal transcription and enhance regulatory precision, transcriptional terminator filters were incorporated, reducing leaky expression and increasing the dynamic range of target gene regulation. The platform demonstrated exceptional adaptability across diverse applications, including ligand-inducible genetic switches for transcriptional control, signal amplification circuits for enhanced output, and metabolic genetic switches for pathway reprogramming. Notably, the metabolic genetic switch dynamically repressed the endogenous gapA gene while compensating with orthologous gapC expression, effectively redirecting metabolic flux to balance cell growth.
conclusionsThe CRISPRi-aided genetic switch provides a powerful and flexible toolkit for synthetic biology, addressing the limitations of existing systems. By enabling precise and tunable transcriptional regulation, it offers robust solutions for a wide array of biotechnological applications, including pathway engineering and synthetic gene networks.
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