申请人:Univerzita Palackého v Olomouci
公开号:EP3395956A1
公开(公告)日:2018-10-31
The present invention concerns a method of determining the amount of DNA in samples, comprising the following steps:
(i) a sample is incubated in a solution of at least one fluorescent substance selected from the group consisted of 4',6-diamidino-2-phenylindole, 2-(4-hydroxyphenyl)-5-(4-methyl-1-piperazinyl)-2,5'-bi-1H-benzimidazole, 2'-(4-ethoxyphenyl)-5-(4-methyl-1-piperazinyl)-2,5'-bi-1H-benzimidazole and N,N-dimethyl-4-[5-(4-methyl-1-piperazinyl)[2,5'-bi-1H-benzimidazole]-2'-yl]benzenamine, which, in the course of this incubation, binds to the DNA present in the sample;
(ii) the sample is washed with a washing solution and/or water, which washed away the fluorescent substances not bound to the DNA in the sample;
(iii) the fluorescent substances bound to the DNA in the sample are eluted from the DNA with an aqueous elution solution of at least one substance selected from the group consisted of sodium dodecylsulphate, lithium dodecylsulphate and sodium [dodecanoyl(methyl)amino] acetate, wherein the concentration of sodium dodecylsulphate, lithium dodecylsulphate and/or sodium [dodecanoyl(methyl)amino]acetate is at least 0.1 % (w/v);
(iv) the amount of DNA is determined in the elution solution from the previous step by measuring the fluorescent signal of the fluorescent substance used in step (i).
The present invention further relates to a method of determining the amount of 5-ethynyl-2'-deoxyuridine and/or 5-bromo-2'-deoxyuridine and/or 5-chloro-2'-deoxyuridine and/or 5-iodo-2'-deoxyuridine incorporated into DNA and/or the content of proteins and/or the amount of RNA and/or the amount of specific DNA sequences and/or the amount of sugars and/or the amount of lipids and/or the amount of fluorescently-labelled DNA and/or fluorescently-labelled RNA and/or fluorescently-labelled proteins in cells and tissues; to a method of determining the replication activity in cells and tissues; to a kit for determining the amount of DNA in a sample, and to the use thereof.
本发明涉及一种测定样品中 DNA 含量的方法,包括以下步骤:
(i) 将样品置于至少一种荧光物质的溶液中孵育,该荧光物质选自以下组别:4',6-二脒基-2-苯基吲哚、2-(4-羟基苯基)-5-(4-甲基-1-哌嗪基)-2,5'-双-1H-苯并咪唑、2'-(4-乙氧基苯基)-5-(4-甲基-1-哌嗪基)-2,5'-bi-1H-苯并咪唑和 N,N-二甲基-4-[5-(4-甲基-1-哌嗪基)[2,5'-bi-1H-苯并咪唑]-2'-基]苯胺,在孵育过程中与样品中的 DNA 结合;
(ii) 用洗涤液和/或水清洗样品,洗去样品中未与 DNA 结合的荧光物质;
(iii) 用至少一种选自十二烷基硫酸钠、十二烷基硫酸锂和[十二烷酰基(甲基)氨基]乙酸钠组的物质的洗脱液洗脱样品中与 DNA 结合的荧光物质,其中十二烷基硫酸钠、十二烷基硫酸锂和/或[十二烷酰基(甲基)氨基]乙酸钠的浓度至少为 0.1 % (w/v);
(iv) 通过测量步骤(i)中使用的荧光物质的荧光信号,确定上一步洗脱液中 DNA 的量。
本发明还涉及一种测定 5-乙炔基-2'-脱氧尿苷和/或 5-溴-2'-脱氧尿苷和/或 5-氯-2'-脱氧尿苷和/或 5-碘-2'-脱氧尿苷的量的方法。或细胞和组织中荧光标记 DNA 和/或荧光标记 RNA 和/或荧光标记蛋白质的量;确定细胞和组织中复制活性的方法;确定样品中 DNA 含量的试剂盒及其用途。