Scanning Tunneling Microscopy Study of Lipoic Acid, Mannose, and cRGD@AuNPs Conjugates.

Nanomaterials (Basel)

Instituto de Ciencias Nucleares, Universidad Nacional Autónoma de México, Circuito Exterior C.U., Ciudad de México 04510, Mexico.

Published: September 2023


Category Ranking

98%

Total Visits

921

Avg Visit Duration

2 minutes

Citations

20

Article Abstract

The functionalization of AuNPs with different biological elements was achieved to investigate their possibility in biomedical applications such as drug delivery, vaccine development, sensing, and imaging. Biofunctionalized AuNPs are pursued for applications such as drug delivery, vaccine development, sensing, and imaging. In this study, AuNPs with diameters of 20 nm were functionalized with lipoic acid, mannose, or the cRGD peptide. By using UV-vis spectroscopy, Fourier transform infrared spectroscopy, dynamic light scattering, transmission electron microscopy, and scanning tunneling microscopy techniques, we showed that AuNPs can be functionalized by these biomolecules in a reliable way to obtain conjugates to explore potential biomedical applications. In particular, we demonstrate that the STM technique can be employed to analyze biofunctionalized AuNPs, and the obtained information can be valuable in the design of biomedical applications.

Download full-text PDF

Source
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC10534414PMC
http://dx.doi.org/10.3390/nano13182596DOI Listing

Publication Analysis

Top Keywords

biomedical applications
12
scanning tunneling
8
tunneling microscopy
8
lipoic acid
8
acid mannose
8
applications drug
8
drug delivery
8
delivery vaccine
8
vaccine development
8
development sensing
8

Similar Publications

Arthroplasty surgery is a common and successful end-stage intervention for advanced osteoarthritis. Yet, postoperative outcomes vary significantly among patients, leading to a plethora of measures and associated measurement approaches to monitor patient outcomes. Traditional approaches rely heavily on patient-reported outcome measures (PROMs), which are widely used, but often lack sensitivity to detect function changes (e.

View Article and Find Full Text PDF

The rapid evolution of digital tools in recent years after COVID-19 pandemic has transformed diagnostic and therapeutic practice in neurology. This shift has highlighted the urgent need to integrate digital competencies into the training of future specialists. Key innovations such as telemedicine, artificial intelligence, and wearable health technologies have become central to improving healthcare delivery and accessibility.

View Article and Find Full Text PDF

The prompt and accurate identification of pathogenic bacteria is crucial for mitigating the transmission of infections. Conventional detection methods face limitations, including lengthy processing, complex sample pretreatment, high instrumentation costs, and insufficient sensitivity for rapid on-site screening. To address these challenges, an aptamer (Apt)-sensor based on functionalized magnetic nanoparticles (MNPs) was developed for detecting Escherichia coli.

View Article and Find Full Text PDF

Amplifying antigen-induced cellular responses with proximity labelling.

Nature

September 2025

Shanghai Institute of Biochemistry and Cell Biology, Center for Excellence in Molecular Cell Science, Key Laboratory of RNA Innovation Science and Engineering, Chinese Academy of Sciences, University of Chinese Academy of Sciences, Shanghai, China.

Antigen-induced clustering of cell surface receptors, including T cell receptors and Fc receptors, represents a widespread mechanism in cell signalling activation. However, most naturally occurring antigens, such as tumour-associated antigens, stimulate limited receptor clustering and on-target responses owing to insufficient density. Here we repurpose proximity labelling, a method used to biotinylate and identify spatially proximal proteins, to amplify designed probes as synthetic antigen clusters on the cell surface.

View Article and Find Full Text PDF

Purpose: This study aimed to evaluate the performance of 3D-printed denture base resins (DBRs) compared with conventionally printed DBRs, examine their biofilm formation and physical properties, and determine the viability of 3D-printed DBRs as a superior alternative in removable prosthodontics.

Methods: The DBR samples were fabricated using traditional packing (TRA), milling (MIL), and 3D printing (3DP) methods. All samples were serially polished with an abrasive paper.

View Article and Find Full Text PDF