Water-soluble ZnCuInSe quantum dots for bacterial classification, detection, and imaging

Geng, Hongchao; Qiao, Yan; Jiang, Ning; Li, Chenyi; Zhu, Xingqi; Li, Weili; Cai, Qingyun

doi:10.1007/s00216-020-02974-1

Cited by 10 publications

(5 citation statements)

References 39 publications

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“…aureus detection. As seen therein, the FCNB test strip showed a very competitive sensitivity even in comparison with that obtained by up-conversion and time-resolution FLFAs. , …”

Section: Resultsmentioning

confidence: 70%

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An Emerging Fluorescent Carbon Nanobead Label Probe for Lateral Flow Assays and Highly Sensitive Screening of Foodborne Toxins and Pathogenic Bacteria

Deng

Qian

et al. 2022

Anal. Chem.

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By virtue of the fascinating merits of low cost, rapid screening, and on-site detection, fluorescence lateral flow assays (FLFAs) have attracted considerable attention. Their detection limits are closely associated with the label probes used. The development of high-performance and robust phosphors remains a great challenge. Herein, we presented a new label probe, i.e., fluorescent carbon nanobeads (FCNBs), for FLFAs. Monodispersive, water-soluble, and highly emissive FCNBs were facilely prepared via a hydrothermal carbonization manner. Their abundant amino groups were beneficial for versatile surface functionalization. After being modified by biomolecules, the fabricated FCNB reporter probes were adopted for the construction of lateral flow test strips toward representative foodborne toxins, i.e., aflatoxin B1 (AFB1), and pathogenic bacteria, i.e., Staphylococcus aureus (S. aureus), respectively. The detection limits (0.01 ng/mL for AFB1 and 102 cfu/mL for S. aureus) were about 1 or 2 orders of magnitude lower than most reported methods. Furthermore, the proposed test strips were successfully applied for the quantitative, accurate, and rapid screening of AFB1 and S. aureus in food samples. This work provided a promising label probe for FLFAs and would open the opportunity to exploit a sensing platform by modifying different ligands onto the FCNBs.

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“…aureus detection. As seen therein, the FCNB test strip showed a very competitive sensitivity even in comparison with that obtained by up-conversion and time-resolution FLFAs. , …”

Section: Resultsmentioning

confidence: 70%

“…As seen therein, the FCNB test strip showed a very competitive sensitivity even in comparison with that obtained by upconversion and time-resolution FLFAs. 48,49 Food Sample Assay. Finally, to demonstrate the proactivity, these FCNB-based test strips were applied for AFB1 and S. aureus detection in real samples.…”

Section: ■ Experimental Sectionmentioning

confidence: 99%

An Emerging Fluorescent Carbon Nanobead Label Probe for Lateral Flow Assays and Highly Sensitive Screening of Foodborne Toxins and Pathogenic Bacteria

Deng

Qian

et al. 2022

Anal. Chem.

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“…Leveraging this property, QDs can be employed to detect S. aureus with high sensitivity. [ 111 ] In another work, Wang et al developed a fluorescent LFIA strip for bacterial detection by using magnetic‐core@dual QD‐shell nanoparticles (Fe 3 O 4 @DQDs) as multifunctional fluorescent labels. More specifically, the antibody‐modified Fe 3 O 4 @DQDs were designed to capture bacteria from samples and be collected through magnetic separation.…”

Section: Microbial Infectionsmentioning

confidence: 99%

Bright Semiconductor Quantum Dots Shed New Light on Precision Nanomedicine for Various Diseases

Zhang,

Jiao,

et al. 2023

Small Science

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Nanomaterials with diagnostic and therapeutic functions have exciting potential to reshape the landscape of precision medicine. Impressive progress has been made toward the design and production of innovative theranostic nanomaterials that improve disease care, motivated by their ability to simultaneously provide diagnostic information and therapeutic benefits. Herein, the state‐of‐the‐art theranostic semiconductor quantum dots (QDs) are summarized, and the diverse types of QDs designed for the diagnosis and treatment of different diseases are discussed. The opportunities and benefits of QDs are highlighted throughout using in vitro and in vivo examples aimed at addressing various clinical challenges, including cancer, vascular dysfunctions, microbial infections, and medical tattoos. Over the past several years, this area has experienced enormous growth, particularly in preclinical animal imaging and therapy, which has brought the field closer to reaching human patients. Unfortunately, several barriers to clinical translation remain. Therefore, in addition to summarizing the key results from previous in vivo studies, the lessons learned from these studies are synthesized, perspective on the future steps needed for both fundamental studies and the clinical translation of theranostic QD nanotechnology to inform future QD design is provided.

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“…Staphylococcus aureus: detection limit, 10 5 cell/mL [48]; and concentration range, 1 × 10 3 -1 × 10 11 CFU mL −1 ; detection limit, 1 × 10 3 CFU mL −1 [51]; concentration range, not given [52]; concentration range, 47-4.7 × 10 7 CFU mL −1 ; and detection limit, 10.7 CFU mL −1 [53].…”

Section: Fluorescence Sensor Systems For Bacterial Analysismentioning

confidence: 99%

Optical Sensors for Bacterial Detection

Guliy,

Karavaeva,

Smirnov

et al. 2023

Sensors

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Analytical devices for bacterial detection are an integral part of modern laboratory medicine, as they permit the early diagnosis of diseases and their timely treatment. Therefore, special attention is directed to the development of and improvements in monitoring and diagnostic methods, including biosensor-based ones. A promising direction in the development of bacterial detection methods is optical sensor systems based on colorimetric and fluorescence techniques, the surface plasmon resonance, and the measurement of orientational effects. This review shows the detecting capabilities of these systems and the promise of electro-optical analysis for bacterial detection. It also discusses the advantages and disadvantages of optical sensor systems and the prospects for their further improvement.

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Water-soluble ZnCuInSe quantum dots for bacterial classification, detection, and imaging

Cited by 10 publications

References 39 publications

An Emerging Fluorescent Carbon Nanobead Label Probe for Lateral Flow Assays and Highly Sensitive Screening of Foodborne Toxins and Pathogenic Bacteria

An Emerging Fluorescent Carbon Nanobead Label Probe for Lateral Flow Assays and Highly Sensitive Screening of Foodborne Toxins and Pathogenic Bacteria

Bright Semiconductor Quantum Dots Shed New Light on Precision Nanomedicine for Various Diseases

Optical Sensors for Bacterial Detection

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