He ZY, Liu HC, Mele CA, Veeck LL, Davis O, Rosenwaks Z. Recycling of a single human blastomere fixed on a microscopic slide for sexing and diagnosis of specific mutations by various types of polymerase chain reaction.
Fertil Steril 1999;
72:341-8. [PMID:
10439008 DOI:
10.1016/s0015-0282(99)00241-1]
[Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
OBJECTIVE
To investigate the suitability of recycling single blastomeres to assess multiple genetic variables for preimplantation genetic diagnosis.
DESIGN
Prospective randomized study.
SETTING
An academic medical center.
PATIENT(S)
Patients undergoing IVF-ET.
INTERVENTION(S)
Blastomeres were disaggregated from donated embryos obtained from patients.
MAIN OUTCOME MEASURE(S)
Polymerase chain reaction (PCR) amplification products.
RESULT(S)
Fifty-eight blastomeres individually fixed on slides were separated into four groups. Sequential PCRs (group I, n = 30), primed in situ labeling (PRINS) before five sequential PCRs (group II, n = 10), staining with hematoxylin before performing five sequential PCRs (group III, n = 11) and preamplification of whole DNAs by degenerate oligonucleotide primer (DOP) before performing PCR were executed. The amplification efficiencies of five sequential PCRs were 100%, 100%, 96.6%, 83.3%, 56.7% for group I; 100% 100%, 100%, 80%, 40% for group II; 54.5%, 36.4%, 18.2%, 9.1% for group III; and 100%, 100%, 100%, 100%, 100% for group IV.
CONCLUSION(S)
Blastomeres fixed for PRINS can be recycled for PCR to obtain more genetic information. Hematoxylin staining appears to increase the incidence of failed amplification. Preamplification of whole genomic DNAs by DOP-PCR appears to facilitate diagnosis with high efficiency.
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