miRNA定制检测服务S-poly(T)技术进行miRNA表达检测优势: •一步到位,检出率高
现有绘制miRNA表达谱的主要技术miRNA芯片、高通量小RNA测序等,其结果必须通过qPCR技术的验证;由于灵敏度所限,
芯片和测序技术常出现漏检和误检等情况。用qPCR技术进行miRNA的表达谱分析将大幅提高差异miRNA的检出率和检测准确性。
•引物分组,特异性高
基于S-poly(T)原理开发的miRNA qPCR表达谱分析技术,是将miRNA进行优化分组,每组包括7个miRNA及1个内参;
优化分组限度提高了cDNA合成的特异性,避免引物之间的相互干扰。数据显示, S-Poly(T) plus miRNA表达谱分析技
术与现有市面上的同类产品相比,具有更高的灵敏性、特异性及性价比。
•高灵敏度,能检测特殊样品
由于灵敏度的显著提高,S-poly(T)技术特别适合从血清/血浆、尿液、粪便等含量甚微的材料中检测miRNA的表达。
本公司也开发了这些材料的RNA提取试剂盒,建立了完整的体液/排泄物miRNA检测方案及服务平台。
S-Poly(T)法检测miRNA原理:
S-Poly(T)
®法融合了传统的Stem-loop法和Poly(A)加尾法的优点,使用了与miRNA 3`端特异互补的~6个碱基和11个d(T)组成的S-Poly(T)
®特异性逆转录引物,在较高温度下(≥42°C)对加尾后的miRNA进行链cDNA的合成,不仅显著提高S-Poly(T)逆转录引物与目的miRNA互补结合的特异性和热稳定性,而且逆转录效率更高,从而大幅提高目的miRNA链cDNA的合成及后续qPCR效率。qPCR反应使用特异上游引物、通用下游引物和通用荧光探针对miRNA进行检测。示意图如下:
图. S-Poly(T)plus法检测miRNA原理图
miRNA检测服务流程:miRNA检测(按数目分类)miRNA表达谱检测(按物种分类)使用S-Poly(T)法发表的部分文章:1.Yan Zeng, Xiaoying Zhang, Kang Kang, et al. MicroRNA-223 Attenuates Hypoxia-induced Vascular Remodeling by Targeting RhoB/MLC2 in Pulmonary Arterial Smooth Muscle Cells. Sci Rep. 2016. (SCI, IF: 5.6)
2.Yan Zeng, Hongtao Liu, Kang Kang, et al. Hypoxia inducible factor-1 mediates expression of miR-322: potential role in proliferation and migration of pulmonary arterial smooth muscle cells. Sci Rep. 2015; 5:12098. (SCI, IF: 5.6)
3.Yanqin Niu,Limin Zhang,Huiling Qiu, et al.An improved method for detecting circulating microRNAs with S-Poly(T) Plus real-time PCR[J]. Scientific reports,2015, 5:15100. (IF= 5.6)
4.Hussain M, Asgari S: MicroRNA-like viral small RNA from Dengue virus 2 autoregulates its replication in mosquito cells. Proc Natl Acad Sci U S A 2014, 111(7):2746-2751. (IF= 9.737)
5. Kang K, Peng X, Zhang X, Wang Y, Zhang L, Gao L, Weng T, Zhang H, Ramchandran R, Raj JU et al: MicroRNA-124 suppresses the transactivation of nuclear factor of activated T cells by targeting multiple genes and inhibits the proliferation of pulmonary artery smooth muscle cells. J Biol Chem 2013, 288(35):25414-25427. (IF= 4.651)
6. Kang K, Zhang X, Liu H, Wang Z, Zhong J, Huang Z, Peng X, Zeng Y, Wang Y, Yang Y et al: A Novel Real-Time PCR Assay of microRNAs Using S-Poly(T), a Specific Oligo(dT) Reverse Transcription Primer with Excellent Sensitivity and Specificity. PLoS One 2012, 7(11):e48536-48545. (IF=4.1)
7. Liu B, Dou W, Ding TB, Zhong R, Liao CY, Xia WK, Wang JJ: An analysis of the small RNA transcriptome of four developmental stages of the citrus red mite (Panonychus citri). Insect molecular biology 2014, 23(2):216-229. (IF= 3.044)
8. Kang K, Zhong J, Jiang L, Liu G, Gou CY, Wu Q, Wang Y, Luo J, Gou D: Identification of microRNA-Like RNAs in the Filamentous Fungus Trichoderma reesei by Solexa Sequencing. PLoS One 2013, 8(10):e76288. (IF=3.73)
9. Bao Y, Guo Y, Li Z, Fang W, Yang Y, Li X, Li Z, Xiong B, Chen Z, Wang J et al: MicroRNA profiling in Muc2 knockout mice of colitis- associated cancer model reveals epigenetic alterations during chronic colitis malignant transformation. PloS one 2014, 9(6):e99132. (IF=3.53)更多关于今发展生物产品的信息,请查看: www.geneups.com
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