Methods for capture and selective release of nucleic acids using weakly basic polymer and amplification of same
申请人:JOHNSON & JOHNSON CLINICAL DIAGNOSTICS, INC.
公开号:EP0707077A2
公开(公告)日:1996-04-17
Nucleic acids can be made available for amplification or other treatment after lysis by contacting the lysate with specific weakly basic polymers to form a precipitate with the nucleic acids at acidic pH. After removing non-precipitated materials, the pH is then made basic, thereby releasing the nucleic acids from the polymer. This method for preparing specimen samples is simple and quite rapid, and the released nucleic acids can be further treated in hybridization assays or amplification procedures. The weakly basic polymers are water-soluble and cationic at acidic pH, but neutral in charge at basic pH.
将裂解液与特定的弱碱性聚合物接触,使其在酸性 pH 值下与核酸形成沉淀,可使核酸在裂解后用于扩增或其他处理。除去未沉淀的物质后,pH 值变为碱性,从而将核酸从聚合物中释放出来。这种制备样本的方法简单快捷,释放出的核酸可在杂交试验或扩增程序中进一步处理。弱碱性聚合物可溶于水,在酸性 pH 值下呈阳离子,但在碱性 pH 值下呈中性。