Diagnostic Probes

A special issue of Diagnostics (ISSN 2075-4418). This special issue belongs to the section "Point-of-Care Diagnostics and Devices".

Deadline for manuscript submissions: closed (31 October 2021) | Viewed by 5457

Special Issue Editor


E-Mail
Guest Editor
Nucleic Acids Technologies Lab, Linköping University, Linköping, Sweden
Interests: nucleic acids; diagnostics; biosensors; bioregnition molecules; nucleases; targeted strategies; personalized medicine; oligonucleotide synthesis and modifications

Special Issue Information

Dear Colleagues,

Diagnosis is a critical process that identifies the cause of a disease and facilitates the appropriate therapeutic treatment. Thus, diagnosis is the key factor for patient care, experimental research, and healthcare policy. In the last decades, innovation and breakthroughs in diagnostics have shown a plethora of approaches based on the understanding at the molecular level. With the advent of PCR, the molecular diagnosis has played an important role in the diagnostic field. However, the amplification methods based on PCR are not the only option for developing diagnostic probes based on nucleic acids. Interesting approaches, such as the development of biosensors using the hybridization features of nucleic acids, have been successfully explored. Likewise, nucleic acid aptamers have shown their great potential in diagnostics, in this case, using the 3D conformational capabilities of nucleic acids to create recognition molecules similar to antibodies. Another approach uses nucleic acids as substrates for the recognition of nucleases as target biomarkers of disease. This strategy takes advantage of the diversity and variability of nucleases to create substrates with a high specificity and sensitivity for a given nuclease. Thus, nucleic acids offer great flexibility and versatility for designing novel diagnostic probes, and they will most likely lead the diagnostic field in the future.

In this Special Issue, we will focus on the nucleic acid diagnostic probes based on amplification, hybridization, aptamers, and nucleic acid substrates.

Dr. Frank J. Hernandez
Guest Editor

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. Diagnostics 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.

Published Papers (2 papers)

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

Research

15 pages, 6011 KiB  
Article
Ultra-Sensitive and Specific Detection of S. aureus Bacterial Cultures Using an Oligonucleotide Probe Integrated in a Lateral Flow-Based Device
by Isabel Machado, Garazi Goikoetxea, Enara Alday, Tania Jiménez, Xabier Arias-Moreno, Frank J. Hernandez and Luiza I. Hernandez
Diagnostics 2021, 11(11), 2022; https://doi.org/10.3390/diagnostics11112022 - 31 Oct 2021
Cited by 4 | Viewed by 2501
Abstract
The identification of pathogens causing infectious diseases is still based on laborious and time-consuming techniques. Therefore, there is an urgent need for the development of novel methods and devices that can considerably reduce detection times, allowing the health professionals to administer the right [...] Read more.
The identification of pathogens causing infectious diseases is still based on laborious and time-consuming techniques. Therefore, there is an urgent need for the development of novel methods and devices that can considerably reduce detection times, allowing the health professionals to administer the right treatment at the right time. Lateral flow-based systems provide fast, cheap and easy to use alternatives for diagnosis. Herein, we report on a lateral flow approach for specifically detecting S. aureus bacteria within 6 h. Full article
(This article belongs to the Special Issue Diagnostic Probes)
Show Figures

Graphical abstract

13 pages, 2379 KiB  
Article
One Step Histological Detection and Staining of the PTEN Tumor Suppressor Protein by a Single Strand DNA
by Gloria Longinotti, Gabriel Ybarra, Susana Vighi, Claudia Perandones, Javier Montserrat, Juan Sebastian Yakisich, Mariano Grasselli and Martin Radrizzani
Diagnostics 2021, 11(2), 171; https://doi.org/10.3390/diagnostics11020171 - 26 Jan 2021
Cited by 2 | Viewed by 2239
Abstract
Antibodies are the most used technological tool in histochemistry. However, even with monoclonal antibodies, their standardization is difficult due to variation of biological systems as well as to variability due to the affinity and amplification of the signal arising from secondary peroxidase detection [...] Read more.
Antibodies are the most used technological tool in histochemistry. However, even with monoclonal antibodies, their standardization is difficult due to variation of biological systems as well as to variability due to the affinity and amplification of the signal arising from secondary peroxidase detection systems. In this article we combined two synthetic molecules to facilitate the standardization of a detection protocol of protein markers in histological sections. The first molecule was an aptamer, a 50-base single-stranded DNA fragment, which recognizes a PTEN tumor suppressor. The second molecule used was also another single stranded 18-base aptamer DNA fragment, which forms a quadruplex structure guanine box. This G-quadruplex recognizes and attaches a molecule of hemin, increasing the catalytic capacity for the hydrogen peroxide. Our results show how the correct structural design of DNA combining an aptamer together with the peroxidase-like DNAzyme allows to detect proteins in histological sections. This tool offers the standardization of the detection of prognostic markers in cancer, in quality and quantity, due to its synthetic nature and its 1:1 antigen:enzyme ratio. This is the first time that reproducible results have been presented in histological sections staining a cancer marker using a single-stranded DNA molecule with dual function. Full article
(This article belongs to the Special Issue Diagnostic Probes)
Show Figures

Graphical abstract

Back to TopTop