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Nanotechnology Spotlight

Behind the buzz and beyond the hype:
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Showing Spotlights 1 - 8 of 331 in category Bionanotechnology, Nanomedicine (newest first):

 

Graphene electrodes for simultaneous electrophysiology and neuroimaging

neuron_imagingStudying the complex wiring of neural circuits and identifying the details of how individual neural circuits operate in epilepsy and other neurological disorders requires real-time observation of their locations, firing patterns, and other factors. These observations depend on high-resolution optical imaging and electrophysiological recording. Researchers have now developed a completely transparent graphene microelectrode that allows for simultaneous optical imaging and electrophysiological recordings of neural circuits.

Posted: Nov 13th, 2014

A nanoparticle-based alternative to Viagra

ViagraThe majority of men who undergo radical prostatectomy for the treatment of prostate cancer will suffer from erectile dysfunction due to disruption of the cavernous nerve. This nerve has been identified as responsible for penile erection. The oral erectogenic PDE5 inhibitors like Viagra rely on the functioning of this nerve to provide the initial burst of nitric oxide necessary to initiate an erection. In this condition nanotechnology - in the form of a nanoparticle delivery system - may come to the rescue by targetting useful therapeutics for penile rehabilitation following radical prostatectomy.

Posted: Oct 24th, 2014

Graphene-based biomimetic soft robotics platform

soft_roboticsAmong the various robotic actuation mechanisms driven by different stimuli, light-driven systems have garnered more and more attention due to their advantages in wireless/remote control, localized rather than whole-field driven capabilities, and electrical/mechanical decoupling. Inspired by the photothermal effect of graphene in biomedical applications, researchers have now demonstrated an easily fabricated and remote/wireless control light-driven approach to actuation mechanism based on graphene nanocomposites.

Posted: Oct 23rd, 2014

Multifunctional RNA nanoparticles to combat cancer and viral infections

There is a significant need for new therapeutic approaches to combat diseases such as cancer and viral infections. Using RNA as a therapeutic modality brings to bear an entirely new approach, which not only allows for the construction of uniform scaffolds for attachment of functional entities, but also permits the use of all the different types of functionalities that are inherent in natural RNAs. New research demonstrates that multifunctional RNA nanoparticles with a nanoring design allow the use of different types of functionalities inherent in natural RNAs.

Posted: Oct 13th, 2014

Curcumin nanoparticles as innovative antimicrobial and wound healing agents

curcuminResearchers have explored the use of curcumin nanoparticles for the treatment of infected burn wounds, an application that resulted in reduced bacterial load and enhancing wound healing. Adding to the excitement regarding curcumin in multiple fields of medicine, most prominently in oncology, these new findings demonstrat that curcumin nanoparticles were more effective at both accelerating thermal burn wound closure and clearing infection with Methicillin Resistant S. aureus (MRSA) as compared to curcumin in its bulk size.

Posted: Sep 22nd, 2014

Using nanotechnology to regulate gene expression at the transcriptional level

nanoparticleGene transcription is tightly regulated by proteins called transcription factors. These transcription factor (TF) proteins are master regulators of transcriptional activity and gene expression. Transcription factors are responsible for transcribing the correct genes and therefore for producing the right quantity of proteins. TF-based gene regulation is a promising approach for many biological applications, however, several limitations hinder the full potential of TFs. To overcome these problems, an international team of researchers has developed an artificial, nanoparticle-based transcription factor, termed NanoScript, which is designed to mimic the structure and function of TFs.

Posted: Aug 28th, 2014

Self-powered micropumps respond to glucose levels

insulin_pumpResearchers have demonstrated an active glucose-responsive self-powered fluidic pump based on transesterification reaction of acyclic diol boronate with glucose. The scientific principle of the project is to use well-known glucose/boronate chemistry to design a self-powered micropump device. Instead of synthesizing some new molecules with glucose/boronate reaction, a miniature pump utilizes the energy of this chemical reaction and pumps drugs when glucose levels are high.

Posted: Aug 19th, 2014

DNA nanopyramids detect and combat bacterial infection

DNA_nanopyramidOne way to eliminate the toxicity issue of synthetic nanomaterials used in nanomedicine is by working with truly biocompatible natural carriers for sensing and drug delivery applications. The emerging field of DNA nanotechnology may provide a solution. In new work, researchers have developed a novel theranostic platform which is made by utilizing a self-assembled DNA nanopyramid as scaffold for incorporation of both detection and therapeutic moieties to combat bacterial infection.

Posted: Jul 11th, 2014