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Title: Methods for separating particles and/or nucleic acids using isotachophoresis

Patent ·
OSTI ID:1243046

According to one embodiment, a method includes co-feeding fluids comprising a leading electrolyte, a trailing electrolyte, and at least one of DNA and RNA to a channel, and applying an electric field to the fluids in a direction perpendicular to an axis of the channel for inducing transverse isotachophoresis. In another embodiment, a method includes co-feeding fluids to a channel. The fluids include a leading electrolyte, a trailing electrolyte, biological objects, at least one of DNA and RNA, and a spacer electrolyte having an electrophoretic mobility that is between an electrophoretic mobility of at least some of the biological objects and an electrophoretic mobility of the at least one of the DNA and the RNA. The method also includes applying an electric field to the fluids in a direction perpendicular to an axis of the channel for inducing transverse isotachophoresis. Other methods of isotachophoresis are disclosed in addition to these.

Research Organization:
Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)
Sponsoring Organization:
USDOE
DOE Contract Number:
AC52-07NA27344
Assignee:
Lawrence Livermore National Security, LLC (N/A)
Patent Number(s):
9,285,340
Application Number:
12/542,215
OSTI ID:
1243046
Resource Relation:
Patent File Date: 2009 Aug 17
Country of Publication:
United States
Language:
English

References (7)

A patterned anisotropic nanofluidic sieving structure for continuous-flow separation of DNA and proteins journal February 2007
Isotachophoresis in Free-Flow Using a Miniaturized Device journal June 2006
Miniaturised isotachophoresis of DNA journal July 2007
On-Chip Millionfold Sample Stacking Using Transient Isotachophoresis journal April 2006
Application of monoclonal antibody techniques to biochemical research journal February 1981
Microfabricated structures for facilitating fluid introduction into microfluidic devices patent July 2000
Method for orthogonal analyte stacking/injection systems in electrophoresis patent May 2007

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