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Researchers trap immune cells in oil-water droplets in hopes of reprogramming them to fight cancer

Researchers trap immune cells in oil-water droplets in hopes of reprogramming them to fight cancer | JOIN SCOOP.IT AND FOLLOW ME ON SCOOP.IT | Scoop.it

Some biologists would like to train patients’ own immune systems to treat diseases such as cancer and autoimmune disorders. They envision programming immune cells to destroy tumor cells or to stop immune system attacks on healthy tissue. Now a team of German researchers reports a method that traps immune cells in microscopic water droplets and exposes the cells to chemical signals that could teach them the difference between friend and foe (J. Am. Chem. Soc., DOI: 10.1021/ja311588c).

 

In our immune systems, T cells play many key roles in preventing disease. They attack invaders such as viruses, help hold the immune system’s memory of past infections, and even prevent other immune cells from attacking the body’s own tissue. Joachim P. Spatz and Ilia Platzman, researchers atMax Planck Institute for Intelligent Systems, in Stuttgart, Germany, study how T cells mature and get trained in a particular task. Many types of T cells interact with antigen-presenting cells, which gather up and display fragments of proteins from viruses, bacteria, and other invaders. Through these cellular interactions, the T cells learn how to identify threats and help the immune system eliminate them.

 

Immunologists believe it will be possible to treat diseases by mimicking this process outside the body. For example, a doctor could isolate a cancer patient’s own T cells, expose the cells to antigens specific to the cancer, and then transplant the cells back to direct the immune system to attack the tumor.

 

Previously developed techniques have exposed T cells to flat, relatively rigid surfaces patterned with antigens. But some researchers think a more optimal approach would involve exposing the T cells to an environment that mimics the three-dimensional curvature and squishiness of real cells.

 

The Max Planck Institute group thought they could create such an environment by enclosing T cells within droplets of water in oil. The inner surface of these droplets contains surfactant molecules that produce a fluid and mechanically soft surface, like that of a cell membrane. The team also developed a way to anchor biomolecules to the surfactants, to mimic the surfaces of antigen-presenting cells.

 

The researchers make the droplets by mixing two streams of liquid in a microfluidic system: an oil solution of the surfactants and a water-based mixture of T cells and culture medium. When the two streams meet, droplets form, with the T-cell mixture trapped inside bubbles of surfactant. The researchers attach gold nanoparticles decorated with antigens to the water-facing end of the surfactants. These particles act like the surfaces of antigen-presenting cells. The droplets can be as small as 10 µm wide, and can hold up to six cells each.

 

In a proof of concept experiment, the scientists coated the gold particles with protein fragments known to interact with T cells. When they looked at the droplets under a microscope, they saw that the T cells adhered to the droplets’ inner surfaces. In droplets made with undecorated gold nanoparticles, the cells floated around randomly within the bubbles.

The cells can survive inside the droplets for five days, after which time Platzman believes they run out of food, since the volume of the droplets is extremely small—just a few picoliters. The researchers next plan to use these droplets to expose T cells to disease-related antigens.


Via Dr. Stefan Gruenwald, Mercor
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Cellules immunitaires chercheurs piège huile-eau des gouttelettes dans l'espoir de reprogrammer leur lutte contre le cancer.

"Certains biologistes souhaitez former patients propre système immunitaire pour traiter des maladies telles que le cancer et les troubles auto-immunes.Ils envisagent de programmer des cellules immunitaires à détruire les cellules tumorales ou à arrêter les attaques du système immunitaire sur les tissus sains. Maintenant, une équipe de chercheurs allemands fait état d'une méthode qui piège les cellules immunitaires dans les gouttelettes d'eau microscopiques et expose les cellules à des signaux chimiques qui pourraient leur enseigner la différence entre ami et ennemi (J. Am. Chem Soc, DOI:... 10.1021/ja311588c) .

 

Dans notre système immunitaire, les lymphocytes T jouent de nombreux rôles clés dans la prévention de la maladie. Ils attaquent les envahisseurs tels que les virus, aider à maintenir la mémoire du système immunitaire des infections passées, et même de prévenir d'autres cellules du système immunitaire d'attaquer les propres tissus du corps. Joachim P. Spatz et Ilia Platzman, les chercheurs ATmax Planck Institut des Systèmes Intelligents, à Stuttgart, en Allemagne, étudier comment les cellules T matures et se former dans une tâche particulière. De nombreux types de cellules T interagissent avec les cellules présentatrices d'antigène, qui se réunissent et afficher des fragments de protéines du virus, les bactéries et autres envahisseurs. Grâce à ces interactions cellulaires, les cellules T apprendre à identifier les menaces et aider le système immunitaire à les éliminer.

 

Immunologistes crois qu'il sera possible de traiter les maladies en imitant ce processus en dehors du corps. Par exemple, un médecin peut isoler propres d'un patient cancéreux des cellules T, les cellules exposer à des antigènes spécifiques à la tumeur, puis transplanter les cellules de retour pour diriger le système immunitaire à attaquer la tumeur.

 

Techniques précédemment développés ont exposé des cellules T à des surfaces planes et rigides relativement à motifs avec des antigènes. Mais certains chercheurs pensent une approche plus optimale consisterait à exposer les cellules T à un environnement qui imite la courbure tridimensionnelle et squishiness de véritables cellules.

 

L'Institut Max Planck groupe a pensé qu'ils pouvaient créer un tel environnement en enfermant des cellules T dans les gouttelettes d'eau dans l'huile. La surface interne de ces gouttelettes contient des molécules tensioactives qui produisent un fluide et la surface mécaniquement souple, comme celle d'une membrane cellulaire. L'équipe a également développé une façon d'ancrer biomolécules aux tensioactifs, à imiter les surfaces des cellules présentatrices d'antigène.

 

Les chercheurs font des gouttelettes en mélangeant deux courants de liquide dans un système microfluidique: une solution d'huile et de tensioactifs un mélange à base d'eau des cellules T et un milieu de culture.Lorsque les deux flux se rencontrent, sous forme de gouttelettes, avec le mélange des lymphocytes T piégées à l'intérieur des bulles d'agent tensio-actif. Les chercheurs attachent des nanoparticules d'or décorées avec des antigènes à la fin l'eau face à des tensio-actifs. Ces particules se comportent comme des surfaces de cellules présentatrices d'antigène. Les gouttelettes peuvent être aussi petites que 10 um de large et peut contenir jusqu'à six cellules chacun.

 

Dans une preuve de concept de l'expérience, les scientifiques ont recouvert les particules d'or avec des fragments de protéines connues pour interagir avec les cellules T. Quand ils ont regardé les gouttelettes sous un microscope, ils ont vu que les cellules T adhéré à la surface des gouttelettes internes ». Dans gouttelettes faites avec des nanoparticules d'or non décorés, les cellules flottaient autour de hasard dans les bulles.

Les cellules peuvent survivre à l'intérieur des gouttelettes pendant cinq jours, après quoi Platzman pense qu'ils manquent de nourriture, puisque le volume des gouttelettes est extrêmement petite, juste un peu picolitres. Les chercheurs ont ensuite l'intention d'utiliser ces gouttelettes d'exposer les cellules T aux maladies liées à des antigènes".



Researchers trap immune cells in oil-water droplets in hopes of reprogramming them to fight cancer via @MercorOrg http://sco.lt/...

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Mercor's curator insight, March 5, 2013 12:18 PM

Scooped by Dr. Stefan Gruenwald onto Amazing Science

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12 Scoop.it Curators Share Top Curation Tips

12 Scoop.it Curators Share Top Curation Tips | JOIN SCOOP.IT AND FOLLOW ME ON SCOOP.IT | Scoop.it

Curation is sometimes confusing. Everyone has a different definition and it's used in many different ways as part of content and marketing strategies.

 

I asked 10 of my favorite curation experts for their best tips, tools, their favorite curator and suggestions on innovative uses of curation. Each is a curator on Scoop.it, my favorite curation tool and channel. New and experienced curators are going to learn from their advice.

 

Full original article:

http://www.theprcoach.com/12-experts-share-top-curation-tips/

 


Via Jeff Domansky, Guillaume Decugis, Giuseppe Mauriello
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Lee Wise's curator insight, October 7, 2013 10:54 PM

Some will enjoy this resource!

wanderingsalsero's curator insight, October 20, 2013 8:12 PM

I haven't read this yet but "panels" are always a good way to get a synopsis of any subject......in this case: curation.

Maria Richards's curator insight, March 29, 2014 4:51 PM

It seems so simple here!

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Les riders prêts à enflammer La Torche

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La Torche, vendredi 21 octobre 2016, A moins de 24 heures du coup d’envoi de La Torche Windsurf 2016, tout est quasiment prêt pour accueillir riders et grand public dès samedi matin sur le site de …
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Le nombre des fermes bio en Bretagne en progression en 2016

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L'année 2016 est d'ores et déjà une année record pour le bio en Bretagne, première région agricole française, avec 310 nouvelles fermes bio en seulement six
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[video] @Adobe's #DigitalTransformation | @CloudExpo @24Notion #IoT | IoT User Interface

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Mobile is the strategy that enterprise transformation centers on to drive customer engagement

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Dan Roberts's curator insight, October 7, 2016 5:50 AM
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A Step-by-Step Guide to Advertising on Instagram

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With 500 million active monthly users, Instagram offers a unique opportunity for marketers to reach their audience. Learn everything you need to get started.


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6 Ways to Use Facebook Live Video for Your Business : Social Media Examiner

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Looking for examples to help you get started with Facebook Live? Discover six ways your business can succeed with Facebook Live video.


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Meriem's curator insight, July 27, 2016 1:52 AM
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Google Analytics: The A-to-Z Guide for Content Marketers [Infographic]

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Using Google Analytics properly makes you a far more effective digital marketer. This infographic outlines the key ways content marketers can utilize the tool.


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Why Snapchat’s New Feature Will Be Pivotal (And Why Marketers Are So Excited)

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Snapchat Memories provides users with a way to share photos and videos captured outside of Snapchat to their Story and to save Snapchat content long-term.


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Alex's curator insight, July 28, 2016 1:50 AM
The new memories snapchat update is going to be bigger than most think!
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How to Build Quality Links in 2016?

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Building quality links can go a long way in making your company successful. Be sure to follow these tips to have links that get the job done.

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P.j. Germain's curator insight, July 28, 2016 4:13 PM

#blogging #links #seo

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​How to Create Images That Attract & Convince Your Target Niche

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Your ideal audience needs the right words, paired with the right images, to tell a story that uniquely appeals to their deepest desires.


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What Is Visualization?

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This seems like a straightforward question, but it’s proven to be a difficult one to answer. Even visualization researchers don’t have a clear definition.


Is it synonymous with information graphics? Does visualization have to be computer generated? Does data have to be involved, or can it be abstract? The answers vary depending on who you ask.


Visualization is a medium. It’s not just an analysis tool nor just a way to prove a point more clearly through data.


Visualization is like books. There are different writing styles and categories, there are textbooks and there are novels, and they communicate ideas in different ways for varied purposes. And just like authors who use words to communicate, there are rules that you should always follow and others that are guidelines that you can bend and break...


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Patrice Mitrano's curator insight, January 30, 2014 5:16 AM

De très nombreux exemples d'infographies, malheureusement pas toujours aboutis. A croiser avec d'autres infographies ou représentations sur des sujets identiques ou bien à rapprocher des données sources.

Sang Lee's curator insight, June 17, 2014 9:57 PM

Visualization

Razi Daz's curator insight, November 12, 2015 1:35 PM

Turkish-Property-World.com is a single source of free information about Turkey, the regions the Turkey property market, legal issues and helpful advice on the best way to secure your dream home. We offer holiday villas and luxury apartments, real estate investment properties for sale in Belek Side Alanya Antalya Kemer Kas Kalkan Fethiye the world famous turkish riviera. http://www.turkish-property-world.com

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What the Internet Thinks About—in an Interactive Infographic

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What does the Internet care about? What articles do we share the most? Using the data from the Ahrefs Content Explorer, the people at Funders and Founders 

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Emilio Ruano's curator insight, May 4, 2015 1:17 PM

At least, the concern about equality, energy and social welfare is there. I like the last one about engineers tho. Hahaha.

jose antonio gabelas's curator insight, May 15, 2015 3:33 AM

añada su visión ...

Mackenzie Hamilton's curator insight, October 13, 2015 8:36 AM

I think this article is awesome because they use data visualization to show what people share the most, visit the most, and search the most. Data is everywhere and people are using it everyday and sometimes don't even think about it.

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Tourisme: La Bretagne dans le top 100 mondial des destinations les plus écolos

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La région avait déposé une candidature auprès de Gree
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The Sea Cleaners

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KissKissBankBank est leader Européen du crowdfunding dédié à la création et l’innovation internationale.
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Les fermes bio de Bretagne sont bien placées en Europe

Les fermes bio de Bretagne sont bien placées en Europe | JOIN SCOOP.IT AND FOLLOW ME ON SCOOP.IT | Scoop.it
Sur nos cinq départements bretons, il existe 2722 fermes bio. C'est plus qu'en Irlande, qu'au Danemark ou qu'en Slovénie. #CroirePlusEnNous
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How to Get Lost Data back from SD Card?

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"For a period of time, SD card data recovery has been a tough problem to deal with, but now, it is no longer difficult."


SD Card is short for Security Digital Card, also known as Security Digital Memory Card. It is actually a new generation of memory device based on the semiconductor flash memory device. SD card has been widely using in a variety of portable devices, including digital cameras, personal digital assistants (PDA) and multimedia players.


In 1999, Panasonic put forward the concept of SD card, and Toshiba and SanDisk completed the substantive development. In 2000, these three companies finished the establishment of SD Association (Secure Digital Association, briefly called SDA), and it attracted a large number of companies to participate in this organization: IBM, Microsoft, Motorola, NEC, Samsung, and so on.




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Jenne's comment, July 20, 2016 1:33 AM
Thank you very much, Jim. :)
Jenne's comment, July 21, 2016 3:51 AM
thank you very much. Marcel. :)
Jenne's comment, August 11, 2016 1:09 AM
Thank you very much. :)
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Are Infographics Still Relevant in Your Marketing Strategy?

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Infographic marketing has changed. Are infographics still relevant in your marketing strategy? Here are 5 reasons why infographic is still here to stay.


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How To Master Your Social Media Marketing In Ten Hours Per Week - Locowise Blog

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Most brands don’t have dedicated, full-time social managers. Here’s how to make a huge impact for your brand, on ten or less hours of work per week.

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Mohd Nafees's curator insight, August 3, 2016 1:17 PM

social media marketing

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How To Find Influential People Who May Be Tweeting Your Content

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Most people who tweet links don't bother to mention the author, so it's hard to know when someone important does that for you. Unless you have this tool.

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Tentronix NZ's curator insight, July 24, 2016 12:38 AM
Finding influential people for your content is a key factor for promotion. Read this article if you have just entered digital marketing space or even if you are an intermediate.
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6 Ways Startups Can Leverage Live-Streaming Services

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Here are 5 ways that startups use live streaming, such as Periscope and Meerkat, to promote products/services, relationships with consumers, and a brand image.


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How to Become a More Productive Writer: 7 Helpful Tips

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Learn tips and strategies that'll help you get more writing done without feeling like pulling your hair out.


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Alex's curator insight, July 28, 2016 1:51 AM
to be more productive, get offline!
Janice Greenfield Rappoport-Wald's curator insight, July 29, 2016 6:52 PM
#Bloggers need tips that will save them time.
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Are You Directing Your Visitors To The Right Channel?

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Directing your visitors to the right channel along with tracking them, is important as a visitor today can be your prospect tomorrow with real-time personalization.


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10 Proofreading Tools To Make Your Blog Posts Shareable

10 Proofreading Tools To Make Your Blog Posts Shareable | JOIN SCOOP.IT AND FOLLOW ME ON SCOOP.IT | Scoop.it

The lifeblood of any social media campaign is ‘shares’ from your followers. You want word of your business to spread far and wide, raising awareness and hopefully sales. However, a successful campaign needs more than just a hyperlink and a pretty image. Write the right post, and the customers will come flocking. These tools will help you write the perfect blog post every time.


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Storytelling with Data Visualization

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Does your data tell a story and can you visualize it? We look at the history and thought processes behind data visualization and successful infographics.

Via José Carlos, Lauren Moss
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Anna Vetter's curator insight, May 1, 2015 8:21 AM

L'infographie pour raconter des histoires.

Un article fort clairement documenté sur l'émergence des données visuelles. En prime, quelques conseils utiles pour la conception :

- organiser le plan de l'infographie sur le papier

- identifier l'idée force (comme sujet principal de l'infographie)

- vérifier l'exactitude des informations et la légitimité des sources

- faire aussi beau que possible !

Nikke Blout's curator insight, May 13, 2015 5:16 PM

Content Marketing: the magic of visualizations in helping data tell the story. #contentmarketing #marketing #bigdata #sales #agility

Dianita Páez's curator insight, May 14, 2015 1:23 PM

Infografías que cuenten historias. 

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Here's Every Meteorite Fall on Earth in a Single Interactive Visualization

Here's Every Meteorite Fall on Earth in a Single Interactive Visualization | JOIN SCOOP.IT AND FOLLOW ME ON SCOOP.IT | Scoop.it

Ever wonder how many meteors have hit Earth? The Meteoritical Society is doing its best to keep track. And Javier de la Torre, co-founder of CartoDB, is helping us see the pure volume of hits (into the tens of thousands). His interactive visualization shows a heatmap of hits all over the world, letting you explore where and when meteorites fell, as well as their size and classification.


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Laura Brown's curator insight, May 25, 2015 4:14 PM

I wonder how much of this is biased by the lack of reporting (or over reporting) in some areas. 

AnalyticsInnovations's curator insight, June 5, 2015 7:09 AM

Example of data scientist faux pas:  Meteors choose to fall so unevenly...!