Evidence map›Paper›PMID 36615988›Full record

ArticleNanomaterials (Basel, Switzerland)2022

DNA-Directed Protein Anchoring on Oligo/Alkanethiol-Coated Gold Nanoparticles: A Versatile Platform for Biosensing Applications.

Ahmed Alsadig, Behnaz Abbasgholi-Na, Hendrik Vondracek, Barbara Medagli, Sara Fortuna, Paola Posocco, Pietro Parisse, Humberto Cabrera, Loredana Casalis

Open access · goldAbstract read
In one paragraph

Article in Nanomaterials (Basel, Switzerland), 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 3 papers.

0numbers the graph read from it
0cells of the map it votes in
3citing papers in PubMed
0.3field-weighted citation impact, top 47% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

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.

2 · The registry

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.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

3 citing papers in PubMed, 4 citations in OpenAlex.

  1. Review
  2. Review
  3. Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

9 authors at 5 institutions in 1 country.

Ahmed AlsadigDepartment of Physics, University of Trieste, 34127 Trieste, Italy.ORCID 0000-0001-8601-7345
Behnaz Abbasgholi-NaNanoInnovation Lab, Elettra-Sincrotrone Trieste S.C.p.A., 34149 Trieste, Italy.
Hendrik VondracekNanoInnovation Lab, Elettra-Sincrotrone Trieste S.C.p.A., 34149 Trieste, Italy.ORCID 0000-0002-9603-4605
Barbara MedagliDepartment of Medicine, Surgery and Health Sciences at the University of Trieste, 34149 Trieste, Italy.
Sara FortunaItalian Institute of Technology (IIT), Via Melen-83, B Block, 16152 Genova, Italy.
Paola PosoccoDepartment of Engineering and Architecture, University of Trieste, 34127 Trieste, Italy.ORCID 0000-0001-8129-1572
Pietro ParisseNanoInnovation Lab, Elettra-Sincrotrone Trieste S.C.p.A., 34149 Trieste, Italy.ORCID 0000-0002-7420-2778
Humberto CabreraOptics Lab, STI Unit, The Abdus Salam International Centre for Theoretical Physics, 34151 Trieste, Italy.ORCID 0000-0001-5555-2265
Loredana CasalisNanoInnovation Lab, Elettra-Sincrotrone Trieste S.C.p.A., 34149 Trieste, Italy.
University of Trieste · ITElettra-Sincrotrone Trieste S.C.p.A. · ITThe Abdus Salam International Centre for Theoretical Physics (ICTP) · ITAREA Science Park · ITItalian Institute of Technology · IT

Funding

Italian Association for Cancer Research MFAG 2016 - ID. 18510; IG 2020- ID. 24589
6 · The paper itself

Abstract

Herein, we report on a smart biosensing platform that exploits gold nanoparticles (AuNPs) functionalized through ssDNA self-assembled monolayers (SAM) and the DNA-directed immobilization (DDI) of DNA-protein conjugates; a novel, high-sensitivity optical characterization technique based on a miniaturized gel electrophoresis chip integrated with online thermal lens spectrometry (MGEC-TLS), for the high-sensitivity detection of antigen binding events. Specifically, we characterized the physicochemical properties of 20 nm AuNPs covered with mixed SAMs of thiolated single-stranded DNA and bio-repellent molecules, referred to as top-terminated oligo-ethylene glycol (TOEG6), demonstrating high colloidal stability, optimal binder surface density, and proper hybridization capacity. Further, to explore the design in the frame of cancer-associated antigen detection, complementary ssDNA fragments conjugated with a nanobody, called C8, were loaded on the particles and employed to detect the presence of the HER2-ECD antigen in liquid. At variance with conventional surface plasmon resonance detection, MGEC-TLS characterization confirmed the capability of the assay to titrate the HER2-ECD antigen down to concentrations of 440 ng/mL. The high versatility of the directed protein-DNA conjugates immobilization through DNA hybridization on plasmonic scaffolds and coupled with the high sensitivity of the MGEC-TLS detection qualifies the proposed assay as a potential, easily operated biosensing strategy for the fast and label-free detection of disease-relevant antigens.

Indexed as

biosensingcirculating disease biomarkersDNA-directed immobilization (DDI)gold nanoparticles (AuNPs)plasmonic immunoassaysthermal lens spectroscopy (TLS)

Identifiers

PMID36615988
PMCPMC9823620
OpenAlexW4313259861

What OpenQuestion holds

Textmetadata
LicenceCC BY
Read underepoch 390

Registered trials

None linked

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.