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    • 3. 发明申请
    • METHOD OF ISOLATING PURIFIED RNA WITH REDUCED DNA CONTAMINATIONS
    • 用减少的DNA污染物分离纯化的RNA的方法
    • US20130225801A1
    • 2013-08-29
    • US13821159
    • 2011-09-06
    • Gabriele Christoffel
    • Gabriele Christoffel
    • C07H1/08
    • C07H1/08C07H1/06C07H19/04C07H19/06C07H19/067C07H19/073C07H19/16C07H19/167C12N15/1003
    • The present invention pertains to a method of isolating RNA from a sample comprising RNA, and DNA, comprising: a) adding an acidic denaturing composition comprising a chaotropic agent and phenol to the sample; b) adding a water-insoluble organic solvent and separating the resulting phases thereby forming a multi-phase mixture comprising an aqueous phase, optionally an interphase and an organic phase, wherein the RNA is concentrated in said aqueous phase and DNA and proteins are concentrated in said organic phase and/or in said interphase; and c) isolating said RNA from said aqueous phase, wherein at least one cationic detergent is added before separating the phases. It was found that the addition of at least one cationic detergent considerably reduces the amount of DNA in the aqueous, RNA containing phase. Therefore, the present invention allows to easily isolate pure RNA which comprises considerably less DNA contaminations.
    • 本发明涉及从包含RNA和DNA的样品中分离RNA的方法,其包括:a)向样品中加入包含离液剂和苯酚的酸性变性组合物; b)加入水不溶性有机溶剂并分离所得的相,从而形成包含水相(任选地相间相和有机相)的多相混合物,其中RNA浓缩在所述水相中,并将DNA和蛋白质浓缩 所述有机相和/或所述相间; 和c)从所述水相中分离所述RNA,其中在分离相之前加入至少一种阳离子去污剂。 发现添加至少一种阳离子洗涤剂显着地减少含水RNA的相中的DNA的量。 因此,本发明允许容易地分离包含相当少的DNA污染物的纯RNA。
    • 9. 发明授权
    • Method of isolating purified RNA with reduced DNA contaminations
    • 用减少的DNA污染物分离纯化的RNA的方法
    • US09487550B2
    • 2016-11-08
    • US13821159
    • 2011-09-06
    • Gabriele Christoffel
    • Gabriele Christoffel
    • C07H21/00C07H1/08C12N15/10C07H19/06C07H19/16C07H19/073C07H19/167C07H1/06C07H19/067C07H19/04
    • C07H1/08C07H1/06C07H19/04C07H19/06C07H19/067C07H19/073C07H19/16C07H19/167C12N15/1003
    • The present invention pertains to a method of isolating RNA from a sample comprising RNA, and DNA, comprising: a) adding an acidic denaturing composition comprising a chaotropic agent and phenol to the sample; b) adding a water-insoluble organic solvent and separating the resulting phases thereby forming a multi-phase mixture comprising an aqueous phase, optionally an interphase and an organic phase, wherein the RNA is concentrated in said aqueous phase and DNA and proteins are concentrated in said organic phase and/or in said interphase; and c) isolating said RNA from said aqueous phase, wherein at least one cationic detergent is added before separating the phases. It was found that the addition of at least one cationic detergent considerably reduces the amount of DNA in the aqueous, RNA containing phase. Therefore, the present invention allows to easily isolate pure RNA which comprises considerably less DNA contaminations.
    • 本发明涉及从包含RNA和DNA的样品中分离RNA的方法,其包括:a)向样品中加入包含离液剂和苯酚的酸性变性组合物; b)加入水不溶性有机溶剂并分离所得的相,从而形成包含水相(任选地相间相和有机相)的多相混合物,其中RNA浓缩在所述水相中,并将DNA和蛋白质浓缩 所述有机相和/或所述相间; 和c)从所述水相中分离所述RNA,其中在分离相之前加入至少一种阳离子去污剂。 发现添加至少一种阳离子洗涤剂显着地减少含水RNA的相中的DNA的量。 因此,本发明允许容易地分离包含相当少的DNA污染物的纯RNA。
    • 10. 发明申请
    • METHOD FOR ISOLATING A TARGET NUCLEIC ACID INCLUDING SMALL TARGET NUCLEIC ACIDS WITH HIGH YIELD
    • 用于分离靶向核酸的方法,包括具有高YIELD的小目标核酸
    • US20130164825A1
    • 2013-06-27
    • US13820228
    • 2011-09-02
    • Vera HolländerGabriele ChristoffelMartin Schlumpberger
    • Vera HolländerGabriele ChristoffelMartin Schlumpberger
    • C07H1/08
    • C12N15/1006C12N15/1017
    • The present invention pertains to a method for isolating a target nucleic acid including small target nucleic acids from a sample, said method comprising at least the following steps a) binding at least a portion of the target nucleic acid including small target nucleic acids to a nucleic acid binding solid phase comprised in a column by passing the sample through said column, b) performing an enzymatic and/or chemical treatment on the nucleic acid binding solid phase while the target nucleic acid is bound to said solid phase, c) collecting at least a portion of the small target nucleic acids released from the solid phase during said treatment of step b) as flow-through, d) contacting said flow-through which comprises small target nucleic acids mixed with a recovery solution with a nucleic acid binding solid phase for binding the contained small target nucleic acids to said nucleic acid binding solid phase, e) optionally performing an elution. The present invention results in a considerable increase in the yield of small target nucleic acids in the isolated target nucleic acid because it allows to efficiently capture and recover small target nucleic acids.
    • 本发明涉及从样品中分离包含小靶核酸的靶核酸的方法,所述方法至少包括以下步骤:a)将包含小靶核酸的靶核酸的至少一部分结合至核酸 通过使样品通过所述柱而包含在柱中的酸结合固相,b)对核酸结合固相进行酶和/或化学处理,同时靶核酸与所述固相结合,c)至少收集 在步骤b)的所述处理期间从固相中释放的一部分小目标核酸作为流通,d)使所述流通接触,所述流过包含与回收溶液混合的小目标核酸与核酸结合固相 用于将所含的小靶核酸与所述核酸结合固相结合,e)任选地进行洗脱。 本发明导致分离的靶核酸中小靶核酸的产量显着增加,因为其允许有效捕获和回收小靶核酸。