OhioMod2013:Team/Paul: Difference between revisions

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[[Image:May12_66helicev3_view2.gif|200px]]
[[Image:May12_66helicev3_view2.gif|200px]]
[[Image:May12_66helicev3_view3.gif|200px]]
[[Image:May12_66helicev3_view3.gif|200px]]
Literature review: It seems well accepted that crossing the nucleolus membrane is the greatest challenge facing gene therapy. The calcium phosphate protocol as it stands only takes us to the cytosol, so the origami must be designed to be able to enter the nucleus. A paper in 1988 used a range of gold particles to measure the size able to enter through the nuclear pore complex <cite>Dworetzky</cite> and found that the limiting size was 26 nm. This suprised some people as some viral proteins are larger than this, including Hepatitis nucleocapsids. A later paper in 2002 used gold particles with protein complexes to measure a larger size of 32-36nm <cite>Pante</cite>.
=References=
<biblio>
#Dworetzky pmid=3170630
#Pante pmid=PMC65638
</biblio>

Revision as of 15:13, 12 May 2013

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Paul Gruenbacher

About

Interests

Notebook

Will be using links to google drive for files.


Friday May 10

Submitted cadnano design of 66 helices, non-hollow: 66helicev1. Will note that midline there are scaffold crossovers that do not have staples nearby, had incorrectly assumed that staple crossovers must avoid scaffold crossovers. Design approximately 40 nm long and less than 22 nm in diameter.

Sunday May 12

New version edited by Dr. Castro.66 helices, 2-layered, hollow: 66helicev3. Will note that diameter remains the same, is approximately 44 nm long now. Should not be an issue

Literature review: It seems well accepted that crossing the nucleolus membrane is the greatest challenge facing gene therapy. The calcium phosphate protocol as it stands only takes us to the cytosol, so the origami must be designed to be able to enter the nucleus. A paper in 1988 used a range of gold particles to measure the size able to enter through the nuclear pore complex [1] and found that the limiting size was 26 nm. This suprised some people as some viral proteins are larger than this, including Hepatitis nucleocapsids. A later paper in 2002 used gold particles with protein complexes to measure a larger size of 32-36nm [2].


References

  1. Dworetzky SI, Lanford RE, and Feldherr CM. The effects of variations in the number and sequence of targeting signals on nuclear uptake. J Cell Biol. 1988 Oct;107(4):1279-87. DOI:10.1083/jcb.107.4.1279 | PubMed ID:3170630 | HubMed [Dworetzky]
  2. pmid=PMC65638

    [Pante]