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    • 10. 发明申请
    • ISOLATION AND ANALYSIS OF FETAL DNA FROM EXTRAVILLOUS TROPHOBLAST CELLS RETRIEVED FROM THE ENDOCERVICAL CANAL
    • 从宫颈管上皮细胞回收的胎盘DNA的分离与分析
    • WO2017176985A1
    • 2017-10-12
    • PCT/US2017/026335
    • 2017-04-06
    • WAYNE STATE UNIVERSITY
    • DREWLO, SaschaARMANT, Randall, D.
    • C12N15/10C12Q1/68G01N33/50
    • Methods of isolating DNA of a fetus of an ongoing pregnancy are provided according to the present invention which include obtaining a maternal endocervical sample containing maternal cells and fetal extravillous trophoblast cells from a pregnant subject; isolating fetal extravillous trophoblast cells from the maternal endocervical sample, producing isolated fetal extravllous trophoblast cells contaminated with maternal DNA; lysing the isolated fetal extravillous trophoblast cells; isolating fetal nuclei from the lysed fetal extravillous trophoblast cells, producing isolated fetal nuclei, thereby removing at least a portion of the contaminating maternal DNA; and purifying genomic DNA from the isolated fetal nuclei, producing purified fetal genomic DNA. The purified fetal genomic DNA can be assayed to determine a characteristic of a genomic DNA sequence of the purified fetal genomic DNA, thereby determining a characteristic of DNA of a fetus of an ongoing pregnancy.
    • 根据本发明提供了分离持续妊娠胎儿的DNA的方法,其包括获得含有来自怀孕受试者的母体细胞和胎儿绒毛外滋养层细胞的母体宫颈内膜样品; 从母体宫颈内样品中分离胎儿绒毛外滋养层细胞,产生被母体DNA污染的分离的胎儿外绒毛滋养层细胞; 裂解分离的胎儿绒毛外滋养层细胞; 从裂解的胎儿绒毛外滋养细胞分离胎儿核,产生分离的胎儿细胞核,由此除去至少一部分污染的母体DNA; 并从分离的胎儿细胞核中纯化基因组DNA,产生纯化的胎儿基因组DNA。 可以测定纯化的胎儿基因组DNA以确定纯化的胎儿基因组DNA的基因组DNA序列的特征,从而确定正在进行的妊娠的胎儿DNA的特征。