ArticleApplied microbiology and biotechnology2021
Construction of cadmium whole-cell biosensors and circuit amplification.
Article in Applied microbiology and biotechnology, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 8 papers.
What it found
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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.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
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Who cites it
8 citing papers in PubMed.
- Review
- Whole-cell biosensors with regulatory circuits based on a synthetic dual-input promoter enabling the highly sensitive detection of ultra-trace CdSynthetic and systems biotechnology · 2026Article
- Improvement of a highly sensitive and specific whole-cell biosensor by adding a positive feedback amplifier.Synthetic and systems biotechnology · 2023Article
- Synthetic biology techniques to tackle heavy metal pollution and poisoning.Synthetic and systems biotechnology · 2022Review
- Fluorescent indicators for live-cell and in vitro detection of inorganic cadmium dynamics.Journal of fluorescence · 2022Article
- Detection of environmental pollutant cadmium in water using a visual bacterial biosensor.Scientific reports · 2022Article
- Differential Detection of Bioavailable Mercury and Cadmium Based on a Robust Dual-Sensing Bacterial Biosensor.Frontiers in microbiology · 2022Article
- Recent advances in bacterial biosensing and bioremediation of cadmium pollution: a mini-review.World journal of microbiology & biotechnology · 2021Review
Corrections and comments
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Authors and funding
4 authors.
Funding
Abstract
Owing to the prevalence of cadmium contamination and its serious hazards, it is important to establish an efficient and low-cost monitoring technique for the detection of the heavy metal cadmium. In this study, we first designed 30 cadmium whole-cell biosensors (WCBs) using different combinations of detection elements, reporting elements, and the host. The best performing WCB KT-5-R with Pseudomonas putida KT2440 as the host and composed of CadR and mCherry was selected for further analysis and engineering. In order to enhance its sensitivity, a positive feedback amplifier was added or the gene dosage of the reporter gene was increased. The WCB with the T7RNAP amplification module, p2T7RNAPmut-68, had the best performance and improved tolerance to cadmium with a detection limit of 0.01 μM, which is the WHO standard. It also showed excellent specificity toward cadmium when assayed with mixed metal ions. This study demonstrated the power of circuit engineering in WCB design and provided valuable insights for the development of other WCBs. KEY POINTS: • KT-5-R was selected after prescreening and engineered for better performance. • Using multi-copy reporters and the T7RNAP amplifier greatly improved the performance. • p2T7RNAPmut-68 had a detection limit of 0.01 μM and improved tolerance to cadmium.
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Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.