Tuesday, June 23, 2009

Delivering 27mer DsiRNAs to Mice DRGs

I have been a proponent of using 27mer DsiRNAs (Dicer Substrate Small Interfering RNAs) with our i-Fect kits to deliver siRNA to the CNS for gene expression analysis. The potency of this platform was highlighted in my profile of Dr. Mark Behlke.

It was further confirmed by in Studies conducted by Dr. Philippe Serrat and his team at University of Sherbrooke.

Louis Doré-Savard, Geneviève Roussy, Marc-André Dansereau, Michael A Collingwood, Kim A Lennox, Scott D Rose, Nicolas Beaudet, Mark A Behlke and Philippe Sarret. Central Delivery of Dicer-substrate siRNA: A Direct Application for Pain Research. Molecular Therapy (2008); Jul;16(7):1331-9. Epub 2008 Jun 3 doi:10.1038/mt.2008.98.

Using ultra low dose of DsiRNAs complexed with Neuromics’ i-Fect , they were able to successfully reduce NTS2 gene expression by up to 86% in rat lumbar Dorsal Root Ganglia after only two intrathecal injections. This was confirmed by Western Blot and qPCR analysis.

We now have further confirmation of the capabilities of this delivery platform in a just released publication by Dr. Jeffrey Mogil and team:

Michael L. LaCroix-Fralish, Gary Mo, Shad B. Smith, Susana G. Sotocinal, Jennifer Ritchie, Jean-Sebastien Austin, Kara Melmed, Ara Schorscher-Petcu, Audrey C. Laferriere, Tae Hoon Lee, Dmitry Romanovsky, Guochun Liao, Mark A. Behlke, David J. Clark, Gary Peltz, Philippe Séguéla, Maxim Dobretsov and Jeffrey S. Mogil. The β3 subunit of the Na+,K+-ATPase mediates variable nociceptive sensitivity in the formalin test. doi:10.1016/j.pain.2009.04.028.

IT Delivery of siRNA in vivo supplement

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