Advanced Strategy of Trophoblasts Retrieval and Isolation from the Cervix (TRIC): Comparison of Two HLA-G Antibodies for Immunomagnetic Isolation of Trophoblasts.
J Pers Med
; 13(1)2022 Dec 22.
Article
in En
| MEDLINE
| ID: mdl-36675683
ABSTRACT
Trophoblasts retrieval and isolation from the cervix (TRIC) is a non-invasive method which enables analysis of fetal genetic information from the extravillous trophoblast cells (EVTs). The aim of this study was to compare the efficacy of the HLA-G antibodiesG233 and 4H84in isolating EVT cells and provide an optimized protocol of TRIC. We analyzed EVTs from 23 pregnant women in between 5 to 20 weeks of gestation who underwent invasive prenatal testing. Two HLA-G antibodiesG233 and 4H84were used in a subgroup of 11 and 12 samples for immunomagnetic isolation. Cells with ß-hCG expression were counted to compare the rate of isolated trophoblast cells. The rate of ß-hCG positive cells was significantly different between the G233 and the 4H84 by immunefluorescence microscopy (p < 0.001). The percentage of ß-hCG expressing cells in G233 and 4H84 groups were 62.4 ± 8.24% and 82.6 ± 7.1%, respectively (p < 0.001). The average fetal cell positive rate was 14.1 ± 3.78 in the G233 group while it was 25.8 ± 3.9 in the 4H84 group by fluorescence in situ hybridization (FISH) (p = 0.011). Immunoisolation of trophoblast cells using 4H84 HLA-G antibody was more efficient in capturing EVT cells than using G233 for successful clinical application of TRIC.
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Type of study:
Guideline
Language:
En
Journal:
J Pers Med
Year:
2022
Document type:
Article