User:Amirah: Difference between revisions
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Revision as of 22:29, 2 May 2007
Initial ideas
- Build a self assembling and degradable scaffold
- Self assembly would get rid of the use of extraneous material to form proper bonds.
- If the material is degrabale, it can degrade leaving the scaffold behind.
- Find coating to cover degradable scaffold that can select for viruses or cells that excrete scaffold material (collagen, calcuim bicarbonate etc.)
- Find coating to bind proteins needed to assemble outer scaffold layer.
- Coating must not alter assembly or binding of scaffold
- Coating must be very selective for protein or cells needed to form outer non-degradable layer of scaffolding.
Experimental Implementation ideas
- Use DNA as scaffold.
- DNA is degradable
- DNA has the ability to be self assembled into 2D structures (Rothemund), and 3D structures (Zhang)
- Build 3D structures from adaptaion of 'raster fill method' (Rothemund)
- Try the assembly of bone structures
- Use bone morphogenic proteins, BMPs (Hosseinkhani)
- Use mesenchymal stem cells, MSC (Hoseeinkhani)
Papers
- DNA Folding
- Rothemund P.W.K. 2006. Folding DNA to create nanoscale shapes and patterns. Nature. 440:297-302
- Zhang Y., Seeman, N.C. 1994. The construction of a DNA truncated octahedron. J. Am. Chem. Soc. 116: 1661-1669
- Exploration of 3-D scaffold usages and seeding abilities
- Hosseinkhani H., Yamamoto M., Inatsugu Y., Hiraoka Y., Inoue S., Shimokawa H., Tabata Y. 2006. Enhanced ectopic bone formation using a combination of plasmid DNA impregnation into 3-D scaffold and bioreactor perfusion culture. Biomaterials. 27: 1387-1398
- Francoli S. E, Martin I., Sie C. P., Hagg R., Tommasini R., Candrian C., Heberer M., Barbero A. 2007. Growth FActors for Clinical-Scale Expansion of Human Articular Chondrocytes: Relevance for Automated Bioreactor Systems. 13: tentative
Module 4 tables
Surface display of scFv fusion? | Binding to gold? | |||
---|---|---|---|---|
Glucose | Galactose | Glucose | Galactose | |
pCT-CON | N | Y | N | N |
pAu1 | N | Y | N | Y |
# colonies | |
---|---|
pCT-CON | |
pAu1 | |
Library |