Detection of mRNA of the Cyclin D1 Breast Cancer Marker by a Novel Duplex-DNA Probe
作者:Meirav Segal、Eylon Yavin、Pinhas Kafri、Yaron Shav-Tal、Bilha Fischer
DOI:10.1021/jm301838y
日期:2013.6.27
Previously, we have described 5-((4-methoxy-phenyl)-trans-vinyl)-2′-deoxy-uridine, 6, as a fluorescent uridine analogue exhibiting a 3000-fold higher quantum yield (Φ 0.12) and maximum emission (478 nm) which is 170 nm red-shifted as compared to uridine. Here, we utilized 6 for preparation of labeled oligodeoxynucleotide (ODN) probes based on MS2 and cyclin D1 (a known breast cancer mRNA marker) sequences
以前,我们已经将5-((4-甲氧基-苯基)-反式乙烯基)-2'-脱氧尿苷6描述为荧光尿苷类似物,具有更高的量子产率(Φ0.12)和3000倍的最大发射量。 (478nm)与尿苷相比红移了170nm。在这里,我们利用了6用于制备基于MS2和cyclin D1(已知的乳腺癌mRNA标记)序列的标记的寡脱氧核苷酸(ODN)探针。细胞周期蛋白D1衍生的标记的-ssODN在双链体形成后显示量子产率降低了9.5倍。在此发现的基础上,我们开发了用于检测细胞周期蛋白D1 mRNA的ds-NIF(具有固有荧光的核苷)探针方法,通过该方法,在相对较暗的NIF双链体探针识别靶mRNA时释放荧光探针。的确,我们使用深色NIF标记的双链探针成功检测到了细胞周期蛋白D1 mRNA的一个单链脱氧核酸(DNA)变体,并通过荧光光谱和凝胶电泳监测了识别过程。此外,我们使用ds-NIF方法成功地检测了从癌性人类细胞中提取的RNA中的细胞周期蛋白D1