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    • 5. 发明公开
    • METHODS FOR DECONVOLUTION OF MIXED CELL POPULATIONS USING GENE EXPRESSION DATA
    • 用基因表达数据解混合细胞群体的方法
    • EP3177734A1
    • 2017-06-14
    • EP15753257.3
    • 2015-08-04
    • Nanostring Technologies, Inc.
    • DANAHER, Patrick John
    • C12Q1/68
    • G06F19/20C12Q1/6813C40B30/02G06F19/24C12Q2537/165
    • Body fluid identification by mRNA profiling may allow extraction of contextual ‘activity level’ information from forensic samples. Accordingly, a prototype multiplex digital gene expression method for forensic body fluid/tissue identification is provided, based upon solution hybridization of color-coded (e.g., NanoString®) probes. For example, a model for gene expression in a sample from a single body fluid is provided and extended to mixtures of body fluids. A calculation of maximum likelihood estimates of body fluid quantities in a sample is performed, and use of likelihood ratios to test for the presence of each body fluid in a sample is described. A process/algorithm is described and, unlike conventional algorithms for detecting tissues and cells, may allow for zero false-positive fluid identifications across a plurality of samples. Such a protocol may facilitate routine use of mRNA profiling in casework (e.g., forensic) laboratories that previously has not been as reliable.
    • 通过mRNA分析鉴定体液可以允许从法医样品中提取上下文“活性水平”信息。 因此,基于颜色编码(例如NanoString®)探针的溶液杂交,提供了用于法医体液/组织鉴定的原型多路数字基因表达方法。 例如,来自单一体液的样品中的基因表达模型被提供并延伸至体液的混合物。 描述了对样本中体液量的最大似然估计值的计算,并且描述了使用似然比来测试样本中每种体液的存在。 描述了过程/算法,并且与用于检测组织和细胞的传统算法不同,可以允许跨越多个样本的零假阳性流体识别。 这样的协议可以有助于常规使用先前不可靠的个案工作(例如,法医)实验室中的mRNA分析。