Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Gluing Cells

16.11.2011
Hybrid made from nanofibers and mussel adhesive protein as substrate for tissue culture

It’s not just what’s inside the cell that counts; its surroundings are important too. For example, the extracellular matrix plays an important role in connective tissue and cartilage, as well as the growth and regeneration of bones. In order to culture tissue in the laboratory, it is also necessary to have a scaffolding that imitates the natural extracellular matrix.


(c) Wiley-VCH

In the journal Angewandte Chemie, a team led by Hyung Joon Cha at the Pohang University of Science and Technology (South Korea) has now introduced a novel substrate: a hybrid made of synthetic nanofibers and an “adhesive” from marine mussels, to which cells can simply be “glued”.

It is important to imitate the fibrous structure of the extracellular matrix, but that is not enough to get the cells to grow onto it. The fibers must have a surface with the right biological functionality. To achieve this, biomolecules from the extracellular matrix are usually attached to synthetic nanofibers—often by way of some highly complicated procedures. A simple, universal technique would be desirable, and the Korean team now seems to have succeeded in finding one—thanks to a special mussel adhesive.

Marine mussels excrete an adhesive protein in order to attach themselves to surfaces in water. This adhesive reliably binds them to nearly all materials: stones, other shells, boardwalks, the hulls of ships. It is thus an ideal universal adhesive. It has now become possible to use genetically modified bacteria to massively produce a mussel adhesive protein.

The Korean researchers used an electrospinning process to produce nanofibers of this mussel adhesive, though these fibers were not a sufficiently solid substrate for cell culture. When spun together in the right proportions with a biocompatible synthetic polymer, however, they formed fibers with good mechanical properties. The synthetic polymer forms the backbone of the fibers, while the mussel adhesive attaches to the nanofibers, making their surface “sticky”. Biomolecules such as proteins, DNA, and carbohydrates stick to it firmly to form an even coat—just dip the fibers into a solution of the desired substance.

Cells also stick to this fibrous substrate very well, as demonstrated with precursor bone-forming cells. The cells attach to the mussel adhesive/polymer nanofibers, spread out, and multiply. This works even better if the mussel adhesive fusion protein also contains a special cell-recognition sequence, thus making the novel mussel-adhesive-containing nanofibers an interesting substrate for tissue culture applications.

Author: Hyung Joon Cha, Pohang University of Science and Technology (Rep. Korea), http://magic.postech.ac.kr/member/professor.html
Title: Reinforced Multifunctionalized Nanofibrous Scaffolds Using Mussel Adhesive Proteins

Angewandte Chemie International Edition, Permalink to the article: http://dx.doi.org/10.1002/anie.201105789

Hyung Joon Cha | Angewandte Chemie
Further information:
http://pressroom.angewandte.org

More articles from Life Sciences:

nachricht One step closer to reality
20.04.2018 | Max-Planck-Institut für Entwicklungsbiologie

nachricht The dark side of cichlid fish: from cannibal to caregiver
20.04.2018 | Veterinärmedizinische Universität Wien

All articles from Life Sciences >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: Spider silk key to new bone-fixing composite

University of Connecticut researchers have created a biodegradable composite made of silk fibers that can be used to repair broken load-bearing bones without the complications sometimes presented by other materials.

Repairing major load-bearing bones such as those in the leg can be a long and uncomfortable process.

Im Focus: Writing and deleting magnets with lasers

Study published in the journal ACS Applied Materials & Interfaces is the outcome of an international effort that included teams from Dresden and Berlin in Germany, and the US.

Scientists at the Helmholtz-Zentrum Dresden-Rossendorf (HZDR) together with colleagues from the Helmholtz-Zentrum Berlin (HZB) and the University of Virginia...

Im Focus: Gamma-ray flashes from plasma filaments

Novel highly efficient and brilliant gamma-ray source: Based on model calculations, physicists of the Max PIanck Institute for Nuclear Physics in Heidelberg propose a novel method for an efficient high-brilliance gamma-ray source. A giant collimated gamma-ray pulse is generated from the interaction of a dense ultra-relativistic electron beam with a thin solid conductor. Energetic gamma-rays are copiously produced as the electron beam splits into filaments while propagating across the conductor. The resulting gamma-ray energy and flux enable novel experiments in nuclear and fundamental physics.

The typical wavelength of light interacting with an object of the microcosm scales with the size of this object. For atoms, this ranges from visible light to...

Im Focus: Basel researchers succeed in cultivating cartilage from stem cells

Stable joint cartilage can be produced from adult stem cells originating from bone marrow. This is made possible by inducing specific molecular processes occurring during embryonic cartilage formation, as researchers from the University and University Hospital of Basel report in the scientific journal PNAS.

Certain mesenchymal stem/stromal cells from the bone marrow of adults are considered extremely promising for skeletal tissue regeneration. These adult stem...

Im Focus: Like a wedge in a hinge

Researchers lay groundwork to tailor drugs for new targets in cancer therapy

In the fight against cancer, scientists are developing new drugs to hit tumor cells at so far unused weak points. Such a “sore spot” is the protein complex...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

VideoLinks
Industry & Economy
Event News

Invitation to the upcoming "Current Topics in Bioinformatics: Big Data in Genomics and Medicine"

13.04.2018 | Event News

Unique scope of UV LED technologies and applications presented in Berlin: ICULTA-2018

12.04.2018 | Event News

IWOLIA: A conference bringing together German Industrie 4.0 and French Industrie du Futur

09.04.2018 | Event News

 
Latest News

Magnetic nano-imaging on a table top

20.04.2018 | Physics and Astronomy

Start of work for the world's largest electric truck

20.04.2018 | Interdisciplinary Research

Atoms may hum a tune from grand cosmic symphony

20.04.2018 | Physics and Astronomy

VideoLinks
Science & Research
Overview of more VideoLinks >>>