Navigation Links
Self-assembled materials form mini stem cell lab
Date:3/27/2008

ike joints and cartilage. Stupp recently had started a new research project on the regenerative medicine of cartilage, which drew him to hyaluronic acid.

This is a clear example of informed discovery, said Stupp, director of the Institute for BioNanotechnology in Medicine. We knew there was something interesting about the interaction between peptide amphiphiles and biopolymers from our previous work on nanostructures that can cause blood vessels to grow. And we were particularly interested in hyaluronic acid because of its role in cartilage, a tissue that adults cannot regenerate and, when damaged in joints, causes grief to humans.

Using just these two molecules, Stupp and his team can make many different structures, the two most important being sacs, which have a solid membrane on the outside and liquid inside, and flat membranes of any shape. The researchers can make the structures large or small, pick up the material with tweezers, stretch it and even easily repair the sacs through self-assembly should the material tear or have some other defect. The sacs also are robust enough to be sutured by surgeons to biological tissues.

The large (hyaluronic acid) and small (peptide amphiphile) molecules come together through supramolecular interactions, not by chemical reaction, in which covalent bonds are formed.

In the case of the flat membrane, the researchers put the peptide amphiphile solution at the bottom of a shallow mold and added on top the hyaluronic acid solution. The two interacted on contact, creating a solid. By varying the mold, the researchers produced a variety of shapes, including stars, triangles and hexagons, each having two chemically different surfaces. When dry, the materials are stiff and strong, like plastic.

In creating a sac, the researchers took advantage of the fact that hyaluronic acid (HA) molecules are larger and heavier than the smaller peptide amphiphile (PA) molecules. In a deep vial, they pou
'/>"/>

Contact: Megan Fellman
fellman@northwestern.edu
847-491-3115
Northwestern University
Source:Eurekalert

Page: 1 2 3 4

Related biology technology :

1. Arrow International Files and Mails Definitive Proxy Materials
2. Advancements in Population Age and Technology Drive Future of Orthopedic Materials Market
3. DuPont and Plantic Technologies Announce Starch-Based Bio Materials Collaboration
4. National Stem Cell Holding Announces Patent Application for Newly Discovered Cellular Derived Biomaterials for Anti-Aging Applications
5. Novel gate dielectric materials: perfection is not enough
6. Biotechnology Needed to Help Meet Growing Global Needs for Food, Feed, Fuel and Materials, DuPont Chairman & CEO Says at World Food Prize
7. NanoMaterials Technology to Conduct Process Development Feasibility Study with US Based Emerging Pharmaceutical Company
8. MIT: Thermoelectric materials are 1 key to energy savings
9. Harland Medical Systems to Offer March Plasma Systems Surface Materials
10. Hybrid materials: Exciting interdisciplinary field offering future solutions for industry
11. Nanomaterials show unexpected strength under stress
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:7/11/2014)... July 11, 2014 BCC Research ( ... DIGITAL POLYMERASE CHAIN REACTION (PCR) TECHNOLOGY: GLOBAL MARKETS , ... technology reached nearly $140 billion in 2013. This is ... a five-year compound annual growth rate (CAGR) of 28.6%. ... of interesting and exciting possibilities within the broader PCR ...
(Date:7/10/2014)... Burkina Faso (PRWEB) July 10, 2014 ... Faso, today have access to an additional family ... increase access to contraception at all levels of ... a lower-dose formulation of a widely used contraceptive—Pfizer’s ... system. , Burkina Faso is the first of ...
(Date:7/10/2014)... July 10, 2014 Unraveling life’s mysteries ... The Archer Family purchased a DNA test ... but ended up with a lifetime of memories, sharing, ... the family members’ DNA genuinely brought the family closer ... search deeper into genetic history and prior to taking ...
(Date:7/10/2014)... July 10, 2014  Franciscan St. Anthony ... capnography for respiratory monitoring outside the operating ... leaders in embracing state-of-the-art patient safety technology. ... are breathing and can alert medical caregivers ... the amount of carbon dioxide the patient ...
Breaking Biology Technology:Global Market for Digital Polymerase Chain Reaction Technology to Reach $490 Billion by 2018; Equipment Sector Accounts for the Fastest Growing Segment With 33% CAGR 2Global Market for Digital Polymerase Chain Reaction Technology to Reach $490 Billion by 2018; Equipment Sector Accounts for the Fastest Growing Segment With 33% CAGR 3Injectable Contraceptive Launched in Burkina Faso to Expand Choice and Address Unmet Need 2Injectable Contraceptive Launched in Burkina Faso to Expand Choice and Address Unmet Need 3Injectable Contraceptive Launched in Burkina Faso to Expand Choice and Address Unmet Need 4Injectable Contraceptive Launched in Burkina Faso to Expand Choice and Address Unmet Need 5Injectable Contraceptive Launched in Burkina Faso to Expand Choice and Address Unmet Need 6Ancestry DNA Test Reveals a Controversial and Undiscovered Family History 2Ancestry DNA Test Reveals a Controversial and Undiscovered Family History 3Ancestry DNA Test Reveals a Controversial and Undiscovered Family History 4Ancestry DNA Test Reveals a Controversial and Undiscovered Family History 5Franciscan St. Anthony Health-Crown Point Underscores Patient Safety Commitment Through Expanded Use of Capnography 2
... database to explore, understand, manage, and share next-generation ... Inc., the leader in sequence data management, today ... Expression Workflow designed to enable researchers working with ... is the second such workflow to be delivered ...
... May 5 Sequella, Inc., a clinical-stage biopharmaceutical company ... start of its Phase 1B trial for SQ109 with ... a new diamine antibiotic intended to replace one or ... patient therapy, was granted U.S. FDA Fast Track designation ...
... influenza virus-like particle (VLP) vaccine progresses with study designed ... May 5 Novavax, Inc. (Nasdaq: NVAX ... second clinical trial of its virus-like particle (VLP) seasonal ... this Phase II randomized, placebo controlled clinical trial has ...
Cached Biology Technology:GenomeQuest, Inc. Announces Digital Gene Expression Solution Within Its Sequence Data Management Platform 2Sequella Commences Phase 1B Study for New Tuberculosis Drug SQ109 2Novavax Announces Enrollment in the Second Phase II Study of its Seasonal Influenza VLP Vaccine Candidate 2Novavax Announces Enrollment in the Second Phase II Study of its Seasonal Influenza VLP Vaccine Candidate 3Novavax Announces Enrollment in the Second Phase II Study of its Seasonal Influenza VLP Vaccine Candidate 4
(Date:7/11/2014)... 2014 Research and Markets has ... Market - Industry Analysis Size Share Growth Trends and ... http://photos.prnewswire.com/prnh/20130307/600769 The ... a need for high level security in both private ... such as username and passwords, tokens etc. are vulnerable ...
(Date:7/10/2014)... 2014  The American Academy of Forensic Sciences ... and Technology (NIST) and the Department of Justice ... forensic science expert members to the Forensic Science ... of the NIST,s Organization of Scientific Area Committees ... appointments made to the new FSSB that has ...
(Date:7/10/2014)... BLUE BELL, Pa. , July 2, 2014  Unisys ... The Netherlands , Unisys Nederland N.V., today announced that ... (DJI) to deliver, implement and manage a new Basic Provision ... . Unisys won the contract with a ... for identity management software. The term of the contract is ...
Breaking Biology News(10 mins):International Biometrics Technology Market - Industry Analysis Size Share Growth Trends and Forecast to 2019 2Ten Members of the American Academy of Forensic Sciences Appointed to Forensic Science Standards Board (FSSB) 2Ten Members of the American Academy of Forensic Sciences Appointed to Forensic Science Standards Board (FSSB) 3Unisys Delivers New Basic Provision Biometrics Solution to Dutch Custodial Institutions Service 2Unisys Delivers New Basic Provision Biometrics Solution to Dutch Custodial Institutions Service 3
... its wood and cottony fibers, the kapok tree now ... for decades: the notion that African and South American ... million years ago. , Research by University of Michigan ... perhaps other rainforest--trees colonized Africa after the continents split ...
... modification to successfully manipulate the growth in height of trees, ... similar to normal trees – but after several years of ... few inches. , This is a “proof of concept” that ... It opens the door to a wide variety of new ...
... that will be published online in advance of its July ... colleagues (The Salk Institute and HHMI) demonstrate that endosomes can ... animals. , "These findings will influence our thinking of the ... why cells use them as signaling compartments," noted lead author ...
Cached Biology News:The kapok connection -- Study explains rainforest similarities 2Researchers demonstrate way to control tree height 2Researchers demonstrate way to control tree height 3
... tissue extracts (liver, kidney, spleen, and heart) and ... It was also tested with microsomal fractions prepared ... simple and reliable method for measuring NDPase activity ... the inorganic phosphate released from NDP by the ...
... CAST Equine EIA Principle: ... LTD4 and LTE4 are products ... 5-lipoxygenase and glutathione-S-transferase. In the ... "Slow Reacting Substances of Anaphylaxis ...
... stress is the condition in which a ... stimuli and the various antioxidants. Oxidative ... pathogenesis of several diseases, including artherosclerosis, chronic ... possesses several antioxidant systems that are very ...
... Compound(s) tested through ... enzyme assays spanning a ... assay panel includes many ... and several non-selective assays. ...
Biology Products: