A new Y chromosome marker for noninvasive fetal gender determination.
We have developed a real-time PCR assay for early fetal gender diagnostics based on the analysis of the Y chromosome-specific multicopy DAZ sequence in the circulating DNA from maternal blood. One fluorescent probe and two pairs of primers used simultaneously in one PCR reaction make it possible to detect as little as 1.5 x 10(-6) ng of DNA isolated from male plasma. Fetal DNA was found both in the plasma and at the surface of cells from mother's blood. The TaqMan real-time PCR assay of the multicopy DAZ sequence in mother's blood detected correctly the fetal gender in the tested group of pregnant women.
Institute of Chemical Biology and Fundamental Medicine, Siberian Division of the Russian Academy of Sciences, Novosibirsk, Russia. olga_vai@niboch.nsc.ru
Olga B
OB
Vainer
Aleksey V
AV
Katokhin
Sergey M
SM
Kustov
Valentin V
VV
Vlassov
Pavel P
PP
Laktionov
D001483:Base Sequence; D041322:Chromosomes, Human, Y / Q000235:genetics*; D005260:Female; D005333:Fetus / Q000502:physiology*; D005819:Genetic Markers; D005865:Gestational Age; D006801:Humans; D008297:Male; D008431:Maternal-Fetal Exchange / Q000235:genetics; D008969:Molecular Sequence Data; D011247:Pregnancy; D016415:Sequence Alignment; D012732:Sex Determination Analysis / Q000379:methods*
D005819:Genetic Markers