sensors-logo

Journal Browser

Journal Browser

Nucleic Acid-Based Sensors

A special issue of Sensors (ISSN 1424-8220). This special issue belongs to the section "Biosensors".

Deadline for manuscript submissions: closed (1 September 2023) | Viewed by 1762

Special Issue Editors

Yusuf Hamied Department of Chemistry, University of Cambridge, Cambridge CB2 1EW, UK
Interests: nucleic acid structure; gene transcription; chromatin structure; gene editing; cancer therapy
Yusuf Hamied Department of Chemistry, University of Cambridge, Cambridge CB2 1EW, UK
Interests: nucleic acid binder; repeat expansion sequence; chemical sequencing

E-Mail Website
Guest Editor
Department of Chemistry, University of California, Riverside, CA 92521, USA
Interests: DNA modifications; epigenetics; nucleic acid chemistry; DNA sequencing; DNA probe; cancer
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Beyond serving as genetic materials shared by all living organisms on earth, nucleic acids have been widely explored in analytical applications by virtue of their extraordinary chemical and physical properties, such as biocompatibility, programmability, easy to modify, chemically stable in the absence of nuclease, synthetic feasibility, and cost-effectiveness.

The unique feature of nucleic acids is that binding to their complementary strands allows for the development of nucleic acid-based signal amplification technologies, such as non-enzymatic nucleic acid amplifiers (e.g., complex entropy-driven catalysis, catalytic hairpin assembly reactions, and hybridization chain reactions) and enzymatic nucleic acid amplifiers (e.g., PCR, LAMP). Taking advantage of PCR amplification and next-generation sequencing, the systematic evolution of ligands by exponential enrichment (in vitro nucleic acid evolution methods such as SELEX) has made available functional nucleic acids including aptamers and nucleic acid enzymes (DNAzyme, ribozyme). The nucleic acid modification methods have brought in a secondary revolution that greatly expanded the capabilities of functional nucleic acids, including enhancing stability, nucleic acid analogues (PNA, SNA), and versatile modulation (photo-control and spatial control). Virus DNA detection during the recent COVID-19 pandemic hugely boosted the application of nucleic acid-based diagnoses. By conjugating nucleic acids with other functional modalities such as nanoparticles, florescent probes, proteins and microfluidic chips, the application scope of nucleic acids became more broad. The versatility of nucleic acids renders them extraordinary materials for making sensing and diagnosis systems and devices.

This Special Issue, therefore, aims to put together original research and review articles on recent advances in technologies, solutions, applications, and new challenges in the field of nucleic acid-based sensing systems.

Potential topics include, but are not limited to:

  • Nucleic acid-based sensors;
  • Nucleic acid-based imaging;
  • Nucleic acid-based target detection;
  • Nucleic acid-based target quantification;
  • Nucleic acid-based diagnosis;
  • Nucleic acid-based therapy;
  • Nucleic acid-based theranostics.

Dr. Yuqi Chen
Dr. Zutao Yu
Dr. Chaoxing Liu
Guest Editors

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Sensors is an international peer-reviewed open access semimonthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2600 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • catalytic and non-catalytic functional nucleic acids (e.g., DNAzyme, ribozyme, aptamer and antisense oligonucleotides)
  • modified nucleic acids (e.g., PNA, LNA and SNA)
  • secondary nucleic acid structure (e.g., G-quadruplex, i-motif and triplex)
  • nucleic acid signal amplification
  • fluorescent sensor
  • biosensing and bioimaging
  • targeted imaging and therapy
  • nucleic acid-based disease diagnosis (for virus, e.g., COVID-19, monkeypox, SARS and cancer)
  • DNA nanotechnology
  • CRISPR-Cas
  • DNA-antibody conjugates
  • lab-on-a-chip

Published Papers (1 paper)

Order results
Result details
Select all
Export citation of selected articles as:

Research

14 pages, 3031 KiB  
Article
A Smartphone-Enabled Continuous Flow Digital Droplet LAMP Platform for High Throughput and Inexpensive Quantitative Detection of Nucleic Acid Targets
by Elijah Ditchendorf, Isteaque Ahmed, Joseph Sepate and Aashish Priye
Sensors 2023, 23(19), 8310; https://doi.org/10.3390/s23198310 - 8 Oct 2023
Cited by 1 | Viewed by 1355
Abstract
Molecular tests for infectious diseases and genetic anomalies, which account for significant global morbidity and mortality, are central to nucleic acid analysis. In this study, we present a digital droplet LAMP (ddLAMP) platform that offers a cost-effective and portable solution for such assays. [...] Read more.
Molecular tests for infectious diseases and genetic anomalies, which account for significant global morbidity and mortality, are central to nucleic acid analysis. In this study, we present a digital droplet LAMP (ddLAMP) platform that offers a cost-effective and portable solution for such assays. Our approach integrates disposable 3D-printed droplet generator chips with a consumer smartphone equipped with a custom image analysis application for conducting ddLAMP assays, thereby eliminating the necessity for expensive and complicated photolithographic techniques, optical microscopes, or flow cytometers. Our 3D printing technique for microfluidic chips facilitates rapid chip fabrication in under 2 h, without the complications of photolithography or chip bonding. The platform’s heating mechanism incorporates low-powered miniature heating blocks with dual resistive cartridges, ensuring rapid and accurate temperature modulation in a compact form. Instrumentation is further simplified by integrating miniaturized magnification and fluorescence optics with a smartphone camera. The fluorescence quantification benefits from our previously established RGB to CIE-xyY transformation, enhancing signal dynamic range. Performance assessment of our ddLAMP system revealed a limit of detection at 10 copies/μL, spanning a dynamic range up to 104 copies/μL. Notably, experimentally determined values of the fraction of positive droplets for varying DNA concentrations aligned with the anticipated exponential trend per Poisson statistics. Our holistic ddLAMP platform, inclusive of chip production, heating, and smartphone-based droplet evaluation, provides a refined method compatible with standard laboratory environments, alleviating the challenges of traditional photolithographic methods and intricate droplet microfluidics expertise. Full article
(This article belongs to the Special Issue Nucleic Acid-Based Sensors)
Show Figures

Figure 1

Back to TopTop