Led by Stefan Wilhelm, Ph.D., assistant professor within the Stephenson College of Biomedical Engineering on the College of Oklahoma, a staff of researchers from the Gallogly Faculty of Engineering at OU, OU Well being Sciences Middle and Yale College lately printed an article in ACS Nano that describes their growth of a super-resolution imaging platform expertise to enhance understanding of how nanoparticles work together inside cells.
As technology-driven capabilities in engineering and healthcare are ever-increasing, scientists and engineers are creating new applied sciences to advance the way forward for well being. One such space, nanomedicine, explores the usage of nanoparticles for drug supply within the physique to combat in opposition to infectious ailments or most cancers. The evaluation of those nanomedicines in cells, tissues and organs is commonly carried out by optical imaging, which might have a restricted high quality of imaging decision. New imaging applied sciences are wanted to see nanoparticles of their 3-D ultrastructural context inside organic tissues.
“To see nanomedicines in organic samples, researchers both use electron microscopy, which offers glorious spatial decision however lacks 3-D imaging capabilities, or optical microscopy, which achieves glorious 3-D imaging, however displays comparatively low spatial decision,” Wilhelm mentioned. “We display that we will carry out 3-D imaging of organic samples with electron microscopy-like decision. This method, referred to as super-resolution imaging, permits us to see nanomedicines inside particular person cells. Utilizing this new super-resolution imaging methodology, we will now begin to monitor and monitor nanoparticles inside cells, which is a prerequisite for designing nanomedicines which might be safer and extra environment friendly in reaching sure areas inside cells.”
The researchers utilized a 3-D super-resolution imaging method generally known as growth microscopy which entails embedding cells inside swellable hydrogels. Like water-absorbing supplies utilized in diapers, the hydrogel supplies bodily develop as much as 20-fold their authentic dimension upon contact with water.
“This growth permits the imaging of cells with a lateral decision of roughly 10 nanometers utilizing a standard optical microscope,” Wilhelm mentioned. “We mixed this methodology with an strategy to picture metallic nanoparticles inside cells. Our strategy exploits the inherent means of metallic nanoparticles to scatter gentle. We used the scattered gentle to picture and quantify nanoparticles inside cells with out the necessity for any further nanoparticle labels.”
The authors recommend their super-resolution imaging platform expertise might be used to enhance the engineering of safer and more practical nanomedicines to advance the interpretation of those applied sciences into the clinic.
