Purification of Nucleic Acids
AssigneePhyNexus, Inc.
InventorsChris Suh, Lee Hoang, Douglas T. Gjerde, Carrie Loan Kim Huynh
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Abstract
The present invention solves the problem of isolating nucleic acids from cells in the presence of the growth medium. The invention is particularly useful for isolating extrachromosomal replicons such as plasmids. Cells are lysed in the presence of the medium in which they were grown and nucleic acids are isolated using a pipette tip column. A liquid handling robot can be used to isolate nucleic acids from multiple samples simultaneously without the need for human intervention.
Claims7
A method for isolating genomic DNA from cells in a liquid culture, comprising:
- a) providing a liquid culture comprised of growth medium and cells;
- b) lysing the cells in the liquid culture in the presence of the growth medium to produce a mixture, wherein the cells are lysed with alkali, wherein the cells in the liquid culture are not centrifuged prior to lysis and wherein lysozyme is not used for lysis;
- c) providing a pipette tip column;
- and
- d) passing at least a portion of the mixture through the pipette tip column, whereby a portion of the genomic DNA is captured on the pipette tip column.
An automated method for isolating genomic DNA from cells in a liquid culture, comprising:
- a) providing a liquid culture comprised of growth medium and cells;
- b) lysing the cells in the liquid culture in the presence of the growth medium to produce a mixture, wherein the cells in the liquid culture are not centrifuged prior to lysis;
- c) providing a pipette tip column;
- and
- d) passing at least a portion of the mixture through the pipette tip column, whereby a portion of the genomic DNA is captured on the pipette tip column,
- e) wherein steps (b) and (d) are performed at pre-determined times.
Dependencies are inferred from the claim text.