发明名称 |
NICHT INVASIVER NACHWEIS FÖTALER GENETISCHER MERKMALE |
摘要 |
Blood plasma of a pregnant woman contains both fetal and maternal circulatory extracellular DNA, the latter forming the major part (generally > 90%) thereof. The majority of the circulatory extracellular fetal DNA has now been found to have a small size of approximately 500 base pairs or less whereas the majority of the circulatory extracellular maternal DNA has a size greater than approximately 500 base pairs. Separation of circulatory extracellular DNA fragments which are smaller than approximately 500 base pairs provides a possibility to enrich for fetal DNA sequences from the vast bulk of circulatory extracellular maternal DNA. <??>There is thus provided a sample of the blood plasma or serum (which preferably is substantially cell-free) of a pregnant woman in which extracellular DNA comprising 500 base pairs or less is enriched; the manufacture of such sample by subjecting a sample of the blood plasma or serum of a pregnant woman to a size separation so as to enrich extracellular DNA comprising 500 base pairs or less; and the use of such sample for the non-invasive detection of fetal genetic traits. |
申请公布号 |
AT435301(T) |
申请公布日期 |
2009.07.15 |
申请号 |
AT20030405742T |
申请日期 |
2003.10.16 |
申请人 |
SEQUENOM, INC. |
发明人 |
HAHN, SINUHE;ZIMMERMANN, BERNHARD;HOLZGREVE, WOLFGANG;LI, YING |
分类号 |
C12Q1/68;G01N33/53;B01J20/281;C12N15/09;G01N30/88;G01N37/00 |
主分类号 |
C12Q1/68 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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