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- W1991130438 abstract "Embryo transfer is a reproductive technique that has a major impact on the dissemination of economically important genes and the rate of genetic gain in breeding schemes. In recent years, there has been increasing interest in the use of sexed and genotyped embryos in commercial embryo transfer programs. Marker/gene assisted selection (MAS/GAS) projects can be performed in the pre-implantation stage through mass production of characterized embryos. Biopsy of a few cells in the morulla stage is essential for pre-implantation genetic diagnosis (PGD), in which sex determination, evaluation of disease genes, and genotyping for candidate genes are performed. Limited quantity of cells and low amount of DNA restrict the use of multiple molecular analyses in PGD programs. Recently, whole genome amplification (WGA) techniques promise to overcome this problem by providing sufficient input DNA for analysis. Among several techniques proposed for WGA, the primer extension pre-amplification (PEP) and the improved-primer extension pre-amplification (I-PEP) methods are the most commonly used. However, these methods are time-consuming and need more than 12 h amplification cycles. Since the time is a critical parameter in the successful characterized embryo transfer, the shortening of diagnosis time is highly desirable. In this study, we developed a short and simple I-PEP procedure (~3 h) and evaluated its performance for the amplification of bovine genomic DNA. We assessed short WGA procedure by polymerase chain reaction (PCR) amplification of 7 specific loci. The results indicated that the short procedure possesses enough sensitivity for the molecular genetic analysis of 1 input cell. Although the efficiency of the method was 100%, there was an inconsistency between genomic DNA (gDNA) and whole genome amplification product (wgaDNA) genotypes for kappa-casein locus; that is, however, most likely due to allele drop-out (ADO) or false homozigocity. The results of this study indicate that with the application of reliable methods, WGA-amplified bovine DNA will be a useful source for sexing and genotyping bovine embryos in several quantitative trait locus (QTL) markers." @default.
- W1991130438 created "2016-06-24" @default.
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- W1991130438 date "2012-01-01" @default.
- W1991130438 modified "2023-09-25" @default.
- W1991130438 title "A Short and Simple Improved-Primer Extension Preamplification (I-PEP) Procedure for Whole Genome Amplification (WGA) of Bovine Cells" @default.
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- W1991130438 doi "https://doi.org/10.1080/10495398.2011.630907" @default.
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