METHOD FOR ISOLATING PLACENTAL TROPHOBLAST CELLS FROM CERVICAL EXFOLIATED CELLS OF PREGNANT WOMAN

The present invention discloses a method for isolating placental trophoblast cells from cervical exfoliated cells of a pregnant woman. Based on a specific antigen or combination expressed on the surface or inside of specific trophoblast cells, the designed microfluidic sorting chip or flow cytometer is used in the method to perform cell sorting of a cell suspension of a placental trophoblast sample, thus obtaining isolated and purified placental trophoblast cells. Compared with conventional methods, the method of the present invention has the advantages of non-invasively obtaining specimens and good specificity. Moreover, the method causes low risk of infection and abortion, allows earlier sampling time and can achieve the synchronous labeling of a plurality of antigens as well as identification and sorting of characteristic fluorescence signals; and the method has greatly improved accuracy and higher reliability and broader coverage area of detection results. Furthermore, compared with immunomagnetic beads and other technologies, the method can both have the advantages of cell quantity and quality, and the number of cells obtained are larger than other technologies, and good in specificity and sensitivity. Therefore, the method has excellent application values and thus, can be applied in many detection purposes and application scenarios.