Method and kit for separating viral and prokaryotic nucleic acids from eukaryotic nucleic acids
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United States of America Patent
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Mar 31, 2015
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Apr 7, 2011
filing date -
Apr 8, 2010
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Abstract
A method for at least partially separating viral and/or prokaryotic nucleic acids from eukaryotic nucleic acids from a biological sample includes re-suspending the cells in the presence of a chelating agent, lysis of the cells by chemical lysis, and/or mechanical lysis, neutralizing the cell lysate and separating the precipitated eukaryotic nucleic acids and obtaining the viral and/or prokaryotic nucleic acids. A kit includes a re-suspension buffer with chelating agent and optionally a saccharide and RNAse, lysis buffer including at least one base and a detergent and neutralizing buffer for at least partially separating viral and/or prokaryotic nucleic acids from eukaryotic nucleic acids from a biological sample. The acid constant of the weak anion defines the pH value and kosmotropic property of the salt (cation+anion) in conjunction with the detergent, which determines the protein solubility and precipitation.
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