Gold Nanoprisms: Synthetic Approaches for Mastering Plasmonic Properties and Implications for Biomedical Applications

2020 ◽  
Vol 3 (8) ◽  
pp. 8304-8318 ◽  
Author(s):  
Stefen Stangherlin ◽  
Nicole Cathcart ◽  
Frederick Sato ◽  
Vladimir Kitaev
Keyword(s):  
Biomedical Applications ◽  
Gold Nanoprisms ◽  
Synthetic Approaches

scholarly journals Green Silver and Gold Nanoparticles: Biological Synthesis Approaches and Potentials for Biomedical Applications

Molecules ◽  
2021 ◽  
Vol 26 (4) ◽  
pp. 844 ◽  
Author(s):  
Andrea Rónavári ◽  
Nóra Igaz ◽  
Dóra I. Adamecz ◽  
Bettina Szerencsés ◽  
Csaba Molnar ◽  
...  
Keyword(s):  
Gold Nanoparticles ◽  
Biomedical Applications ◽  
Biological Activities ◽  
Large Body ◽  
Chemical Properties ◽  
Biological Synthesis ◽  
Silver And Gold Nanoparticles ◽  
Comprehensive Collection ◽  
Synthetic Approaches ◽  
Physical And Chemical

The nanomaterial industry generates gigantic quantities of metal-based nanomaterials for various technological and biomedical applications; however, concomitantly, it places a massive burden on the environment by utilizing toxic chemicals for the production process and leaving hazardous waste materials behind. Moreover, the employed, often unpleasant chemicals can affect the biocompatibility of the generated particles and severely restrict their application possibilities. On these grounds, green synthetic approaches have emerged, offering eco-friendly, sustainable, nature-derived alternative production methods, thus attenuating the ecological footprint of the nanomaterial industry. In the last decade, a plethora of biological materials has been tested to probe their suitability for nanomaterial synthesis. Although most of these approaches were successful, a large body of evidence indicates that the green material or entity used for the production would substantially define the physical and chemical properties and as a consequence, the biological activities of the obtained nanomaterials. The present review provides a comprehensive collection of the most recent green methodologies, surveys the major nanoparticle characterization techniques and screens the effects triggered by the obtained nanomaterials in various living systems to give an impression on the biomedical potential of green synthesized silver and gold nanoparticles.

scholarly journals Dendritic glycopolymers based on dendritic polyamine scaffolds: view on their synthetic approaches, characteristics and potential for biomedical applications

2015 ◽  
Vol 44 (12) ◽  
pp. 3968-3996 ◽  
Author(s):  
Dietmar Appelhans ◽  
Barbara Klajnert-Maculewicz ◽  
Anna Janaszewska ◽  
Joanna Lazniewska ◽  
Brigitte Voit
Keyword(s):  
Biomedical Applications ◽  
Synthetic Approaches

The potential of dendritic glycopolymers based on dendritic polyamine scaffolds for biomedical applications is presented and compared with that of the structurally related anti-adhesive dendritic glycoconjugates.

ChemInform Abstract: Dendritic Glycopolymers Based on Dendritic Polyamine Scaffolds: View on Their Synthetic Approaches, Characteristics and Potential for Biomedical Applications

ChemInform ◽  
2015 ◽  
Vol 46 (32) ◽  
pp. no-no
Author(s):  
Dietmar Appelhans ◽  
Barbara Klajnert-Maculewicz ◽  
Anna Janaszewska ◽  
Joanna Lazniewska ◽  
Brigitte Voit
Keyword(s):  
Biomedical Applications ◽  
Synthetic Approaches

scholarly journals Design of Soft Nanocarriers Combining Hyaluronic Acid with Another Functional Polymer for Cancer Therapy and Other Biomedical Applications

Pharmaceutics ◽  
2019 ◽  
Vol 11 (7) ◽  
pp. 338 ◽  
Author(s):  
Marlène Rippe ◽  
Vanina Cosenza ◽  
Rachel Auzély-Velty
Keyword(s):  
Hyaluronic Acid ◽  
Targeted Delivery ◽  
Biomedical Applications ◽  
The Body ◽  
New Drugs ◽  
Bioactive Molecules ◽  
Comprehensive Overview ◽  
Surface Receptors ◽  
Synthetic Approaches ◽  
Physical And Chemical

The rapid advancement in medicine requires the search for new drugs, but also for new carrier systems for more efficient and targeted delivery of the bioactive molecules. Among the latter, polymeric nanocarriers have an increasingly growing potential for clinical applications due to their unique physical and chemical characteristics. In this regard, nanosystems based on hyaluronic acid (HA), a polysaccharide which is ubiquitous in the body, have attracted particular interest because of the biocompatibility, biodegradability and nonimmunogenic property provided by HA. Furthermore, the fact that hyaluronic acid can be recognized by cell surface receptors in tumor cells, makes it an ideal candidate for the targeted delivery of anticancer drugs. In this review, we compile a comprehensive overview of the different types of soft nanocarriers based on HA conjugated or complexed with another polymer: micelles, nanoparticles, nanogels and polymersomes. Emphasis is made on the properties of the polymers used as well as the synthetic approaches for obtaining the different HA-polymer systems. Fabrication, characterization and potential biomedical applications of the nanocarriers will also be described.

scholarly journals Oligoarginine Peptide Conjugated to BSA Improves Cell Penetration of Gold Nanorods and Nanoprisms for Biomedical Applications

Pharmaceutics ◽  
2021 ◽  
Vol 13 (8) ◽  
pp. 1204
Author(s):  
Karen Bolaños ◽  
Macarena Sánchez-Navarro ◽  
Andreas Tapia-Arellano ◽  
Ernest Giralt ◽  
Marcelo J. Kogan ◽  
...  
Keyword(s):  
Gold Nanoparticles ◽  
Cell Viability ◽  
Gold Nanorods ◽  
Biomedical Applications ◽  
Colloidal Stability ◽  
Cell Penetration ◽  
Cell Internalization ◽  
Gold Nanoprisms ◽  
A Cell ◽  
Endogenous Proteins

Gold nanoparticles (AuNPs) have been shown to be outstanding tools for drug delivery and biomedical applications, mainly owing to their colloidal stability, surface chemistry, and photothermal properties. The biocompatibility and stability of nanoparticles can be improved by capping the nanoparticles with endogenous proteins, such as albumin. Notably, protein coating of nanoparticles can interfere with and decrease their cell penetration. Therefore, in the present study, we functionalized albumin with the r8 peptide (All-D, octaarginine) and used it for coating NIR-plasmonic anisotropic gold nanoparticles. Gold nanoprisms (AuNPrs) and gold nanorods (AuNRs) were coated with bovine serum albumin (BSA) previously functionalized using a cell penetrating peptide (CPP) with the r8 sequence (BSA-r8). The effect of the coated and r8-functionalized AuNPs on HeLa cell viability was assessed by the MTS assay, showing a low effect on cell viability after BSA coating. Moreover, the internalization of the nanostructures into HeLa cells was assessed by confocal microscopy and transmission electron microscopy (TEM). As a result, both nanoconstructs showed an improved internalization level after being capped with BSA-r8, in contrast to the BSA-functionalized control, suggesting the predominant role of CPP functionalization in cell internalization. Thus, our results validate both novel nanoconstructs as potential candidates to be coated by endogenous proteins and functionalized with a CPP to optimize cell internalization. In a further approach, coating AuNPs with CPP-functionalized BSA can broaden the possibilities for biomedical applications by combining their optical properties, biocompatibility, and cell-penetration abilities.

scholarly journals Starburst pamam dendrimers: Synthetic approaches, surface modifications, and biomedical applications

2020 ◽  
Vol 13 (7) ◽  
pp. 6009-6039 ◽  
Author(s):  
Rohini Kharwade ◽  
Sachin More ◽  
Amol Warokar ◽  
Pratibha Agrawal ◽  
Nilesh Mahajan
Keyword(s):  
Biomedical Applications ◽  
Surface Modifications ◽  
Pamam Dendrimers ◽  
Synthetic Approaches

scholarly journals Chemistry of Phosphorene: Synthesis, Functionalization and Biomedical Applications in an Update Review

Inorganics ◽  
2020 ◽  
Vol 8 (4) ◽  
pp. 29
Author(s):  
Monica Pica ◽  
Roberto D’Amato
Keyword(s):  
Biomedical Applications ◽  
Present Review ◽  
Single Element ◽  
Potential Applications ◽  
Biomedical Field ◽  
Synthetic Approaches ◽  
Critical Aspects

The present review aims to highlight the potential of an emerging 2D single element material: phosphorene. Attention is focused on the more recent studies on phosphorene, in terms of synthetic approaches, modification aimed at its stabilization, and potential applications in the biomedical field. Critical aspects for a practical use of phosphorene are discussed, in order to show a realistic scenario and challenges facing researchers.

scholarly journals Design, Synthetic Strategies, and Therapeutic Applications of Heterofunctional Glycodendrimers

Molecules ◽  
2021 ◽  
Vol 26 (9) ◽  
pp. 2428
Author(s):  
Leila Mousavifar ◽  
René Roy
Keyword(s):  
Protein Interactions ◽  
Biomedical Applications ◽  
Immune Cell ◽  
Vaccine Development ◽  
Design Synthesis ◽  
Synthetic Vaccines ◽  
Cell Metastasis ◽  
Wide Range ◽  
Synthetic Approaches ◽  
Chemical Strategies

Glycodendrimers have attracted considerable interest in the field of dendrimer sciences owing to their plethora of implications in biomedical applications. This is primarily due to the fact that cell surfaces expose a wide range of highly diversified glycan architectures varying by the nature of the sugars, their number, and their natural multiantennary structures. This particular situation has led to cancer cell metastasis, pathogen recognition and adhesion, and immune cell communications that are implicated in vaccine development. The diverse nature and complexity of multivalent carbohydrate–protein interactions have been the impetus toward the syntheses of glycodendrimers. Since their inception in 1993, chemical strategies toward glycodendrimers have constantly evolved into highly sophisticated methodologies. This review constitutes the first part of a series of papers dedicated to the design, synthesis, and biological applications of heterofunctional glycodendrimers. Herein, we highlight the most common synthetic approaches toward these complex molecular architectures and present modern applications in nanomolecular therapeutics and synthetic vaccines.

Applications of Scanning Microscopy in Biomedical Research

1968 ◽  
Vol 26 ◽  
pp. 354-355
Author(s):  
T. L. Hayes
Keyword(s):  
Information Content ◽  
Biomedical Research ◽  
Biomedical Applications ◽  
Three Dimensional ◽  
Dental Enamel ◽  
Resolving Power ◽  
Whole Mount ◽  
Two Parameters ◽  
Content Information ◽  
Sectioned Tissue

Biomedical applications of the scanning electron microscope (SEM) have increased in number quite rapidly over the last several years. Studies have been made of cells, whole mount tissue, sectioned tissue, particles, human chromosomes, microorganisms, dental enamel and skeletal material. Many of the advantages of using this instrument for such investigations come from its ability to produce images that are high in information content. Information about the chemical make-up of the specimen, its electrical properties and its three dimensional architecture all may be represented in such images. Since the biological system is distinctive in its chemistry and often spatially scaled to the resolving power of the SEM, these images are particularly useful in biomedical research.In any form of microscopy there are two parameters that together determine the usefulness of the image. One parameter is the size of the volume being studied or resolving power of the instrument and the other is the amount of information about this volume that is displayed in the image. Both parameters are important in describing the performance of a microscope. The light microscope image, for example, is rich in information content (chemical, spatial, living specimen, etc.) but is very limited in resolving power.

How SIMS microscopy can be used in medicine

1992 ◽  
Vol 50 (2) ◽  
pp. 1602-1603
Author(s):  
Philippe Fragu
Keyword(s):  
Mass Spectrometry ◽  
Biomedical Applications ◽  
Secondary Ion Mass Spectrometry ◽  
Chemical Elements ◽  
Biological Applications ◽  
The Past ◽  
Potential Source ◽  
Secondary Ion ◽  
Chemical Integrity ◽  
Scientific Endeavour

The identification, localization and quantification of intracellular chemical elements is an area of scientific endeavour which has not ceased to develop over the past 30 years. Secondary Ion Mass Spectrometry (SIMS) microscopy is widely used for elemental localization problems in geochemistry, metallurgy and electronics. Although the first commercial instruments were available in 1968, biological applications have been gradual as investigators have systematically examined the potential source of artefacts inherent in the method and sought to develop strategies for the analysis of soft biological material with a lateral resolution equivalent to that of the light microscope. In 1992, the prospects offered by this technique are even more encouraging as prototypes of new ion probes appear capable of achieving the ultimate goal, namely the quantitative analysis of micron and submicron regions. The purpose of this review is to underline the requirements for biomedical applications of SIMS microscopy.Sample preparation methodology should preserve both the structural and the chemical integrity of the tissue.

Sign in / Sign up

Export Citation Format

Share Document