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            Biden State of the Union address likely boosted Democrats' 2024 confidence – NPR

            Dallas is the #1 sports business city in U.S., report says – FOX 4 News Dallas-Fort Worth

            Biden State of the Union address likely boosted Democrats' 2024 confidence – NPR

            D.C.-area forecast: Warming up this week as winter shifts to spring – The Washington Post

            Biden State of the Union address likely boosted Democrats' 2024 confidence – NPR

            Alcaraz reclaims world no. 1 ranking, Nadal out of top 10 – Yahoo Sports

            Biden State of the Union address likely boosted Democrats' 2024 confidence – NPR

            Roadrunner Curling Club focuses on education and community – UNM Daily Lobo

            Biden State of the Union address likely boosted Democrats' 2024 confidence – NPR

            Iraq, 20 Years Later: A Changed Washington and a Terrible Toll on America – The New York Times

            Biden State of the Union address likely boosted Democrats' 2024 confidence – NPR

            March Madness bracket updates live: Michigan State, UConn in Sweet 16 – USA TODAY

            Biden State of the Union address likely boosted Democrats' 2024 confidence – NPR

            Married at First Sight: Is there any actual science behind this so … – Cosmos

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              Biden State of the Union address likely boosted Democrats' 2024 confidence – NPR

              Look Back … to the exciting conclusion of the cooking school, 1948 – Yahoo News

              Biden State of the Union address likely boosted Democrats' 2024 confidence – NPR

              Myrtle Beach PD to host community 'Night of Knowledge'; mental health, addiction, housing – wpde.com

              Biden State of the Union address likely boosted Democrats' 2024 confidence – NPR

              Pilaf Isn't Just A Dish, It's Also A Cooking Method – Tasting Table

              Biden State of the Union address likely boosted Democrats' 2024 confidence – NPR

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              Biden State of the Union address likely boosted Democrats' 2024 confidence – NPR

              From-scratch cooking and things you didn’t know about Staten Island’s Chik-fil-A | Fast Food Friday – SILive.com

              Biden State of the Union address likely boosted Democrats' 2024 confidence – NPR

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                Biden State of the Union address likely boosted Democrats' 2024 confidence – NPR

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                Briefly | News, Sports, Jobs – Fairmont Sentinel

                Biden State of the Union address likely boosted Democrats' 2024 confidence – NPR

                How to Watch Red Sox at Phillies: Stream MLB Spring Training Live, TV Channel – Sports Illustrated

                Biden State of the Union address likely boosted Democrats' 2024 confidence – NPR

                Andy Taylor reuniting with Duran Duran for new album – Yakima Herald-Republic

                Biden State of the Union address likely boosted Democrats' 2024 confidence – NPR

                PGA Tour highlights: 2023 Valspar Championship, Round 3 – NBC Sports

                Biden State of the Union address likely boosted Democrats' 2024 confidence – NPR

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                  Biden State of the Union address likely boosted Democrats' 2024 confidence – NPR

                  Aquavit Files Additional IND for DTX-024, a New Botulinum Toxin With Microchannel Technology™ for Palmar Hyperhidrosis – Yahoo Finance

                  Biden State of the Union address likely boosted Democrats' 2024 confidence – NPR

                  For Precision Health Tech Company LifeOmic, Assistive Technology Means Building Accessible Datasets – Forbes

                  Biden State of the Union address likely boosted Democrats' 2024 confidence – NPR

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                  Biden State of the Union address likely boosted Democrats' 2024 confidence – NPR

                  In Manhattan, a Technology Reporter Asks: Are You Scanning My Face? – The New York Times

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                  Nanochannels Light the Way Towards Developing New Drugs

                  by Editor
                  June 17, 2022
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                  Nanochannels Light the Way Towards Developing New Drugs
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                  To develop new drugs and vaccines, detailed knowledge about nature’s smallest biological building blocks – the biomolecules – is required. Researchers at Chalmers University of Technology, Sweden, are now presenting a groundbreaking microscopy technique that allows proteins, DNA and other tiny biological particles to be studied in their natural state in a completely new way.

                  A great deal of time and money is required when developing medicines and vaccines. It is therefore crucial to be able to streamline the work by studying how, for example, individual proteins behave and interact with one another. The new microscopy method from Chalmers can enable the most promising candidates to be found at an earlier stage. The technique also has the potential for use in conducting research into the way cells communicate with one another by secreting molecules and other biological nanoparticles. These processes play an important role in our immune response, for example.

                  Revealing its silhouette

                  Biomolecules are both small and elusive, but vital since they are the building blocks of everything living. In order to get them to reveal their secrets using optical microscopy, researchers currently need to either mark them with a fluorescent label or attach them to a surface.

                  “With current methods you can never quite be sure that the labelling or the surface to which the molecule is attached does not affect the molecule’s properties. With the aid of our technology, which does not require anything like that, it shows its completely natural silhouette, or optical signature, which means that we can analyse the molecule just as it is,” says research leader Christoph Langhammer, professor at the Department of Physics at Chalmers. He has developed the new method together with researchers in both physics and biology at Chalmers and the University of Gothenburg.

                  The unique microscopy method is based on those molecules or particles that the researchers want to study being flushed through a chip containing tiny nano-sized tubes, known as nanochannels. A test fluid is added to the chip which is then illuminated with visible light. The interaction that then occurs between the light, the molecule and the small fluid-filled channels makes the molecule inside show up as a dark shadow and it can be seen on the screen connected to the microscope. By studying it, researchers can not only see but also determine the mass and size of the biomolecule, and obtain indirect information about its shape – something that was not previously possible with a single technique.

                  Acclaimed innovation

                  The new technique, nanofluidic scattering microscopy, was recently presented in the scientific journal Nature Methods. The Royal Swedish Academy of Engineering Sciences, which every year lists a number of research projects with the potential to change the world and provide real benefits, has also paid tribute to the progress made. The innovation has also taken a step out into society through the start-up company Envue Technologies, which was awarded the “Game Changer” prize in this year’s Venture Cup competition in Western Sweden.

                  “Our method makes the work more efficient, for example when you need to study the contents of a sample, but don’t know in advance what it contains and thus what needs to be marked,” says researcher Barbora Špačková, who during her time at Chalmers derived the theoretical basis for the new technique and then also conducted the first experimental study with the technology.

                  The researchers are now continuing to optimise the design of the nanochannels in order to find even smaller molecules and particles that are not yet visible today.

                  “The aim is to further hone our technique so that it can help to increase our basic understanding of how life works, and contribute to making the development of the next generation medicines more efficient” says Langhammer.

                  How the technique works

                  • The molecules or particles that the researchers want to study are placed in a chip containing tiny nano-sized tubes, nanochannels, that are filled with test fluid.
                  • The chip is secured in a specially adapted optical dark-field microscope and illuminated with visible light.
                  • On the screen that shows what can be seen in the microscope, the molecule appears as a dark shadow moving freely inside the nanochannel. This is due to the fact that the light interacts with both the channel and the biomolecule. The interference effect that then arises significantly enhances the molecule’s optical signature by weakening the light just at the point where the molecule is located.
                  • The smaller the nanochannel, the greater the amplification effect and the smaller the molecules that can be seen.
                  • With this technique it is currently possible to analyse biomolecules from a molecular weight of around 60 kilodaltons and upwards. It is also possible to study larger biological particles, such as extracellular vesicles and lipoproteins, as well as inorganic nanoparticles.

                  Reference: Špačková B, Klein Moberg H, Fritzsche J, et al. Label-free nanofluidic scattering microscopy of size and mass of single diffusing molecules and nanoparticles. Nat Methods. 2022;19(6):751-758. doi: 10.1038/s41592-022-01491-6

                    

                  This article has been republished from the following materials. Note: material may have been edited for length and content. For further information, please contact the cited source.



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