2013年1月27日星期日

Targeted proteomics reveals human embryonic stem cells




The researchers from North Carolina State University have developed a new technique to identify protein secreting by cells. This new approach should help researchers to collect accurate data on cell biology.
In the new study, the new method developed by researchers is based on the fact: each cell wraps its protein by using its secreting pathway. Each cells synthesizes protein, and then transport it in this way: to wrap it in a film pouch, and ultimately it is transported to the extracellular domain.
In this new technique, researchers collected cell samples and isolated the protein-containing organelles in the secretory pathway. Then they use mass spectrometry to analysis the substances in these organelles in order to observe which protein cell is secreting. They can identify the mouse embryos into fiber cells and protein secreting by human embryonic stem cells by using this method.
This new method is able to assess problems associated with protein found in the cell culture medium. But it also allows researchers to track the changes when the cells react from stimulus (such as exposure to a chemical) and secretes protein. This is really a very good development for the protein field, because it can help scientist analysis the protein instead of the old way. This technology can save a lot of time compared with the old one. Also there are many other advantages that I can’t tell you all. If you are interested, you can go to some lab and experienced it.  

chemokines
Bone Morphogenetic Protein 
EGF


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