Document Detail


Cost-effective one-step PCR amplification of cystic fibrosis delta F508 fragment in a single cell for preimplantation genetic diagnosis.
MedLine Citation:
PMID:  10589057     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
The combination of in vitro fertilization (IVF) with PCR technologies enables diagnosis of single gene defects for preimplantation genetic diagnosis. This has been accomplished by two-step nested PCR, or PEP-PCR followed by nested PCR processes. To improve the detection of single cell genetic defects, the lysate of a single lymphocyte, with or without cystic fibrosis DeltaF508 mutation (CFDeltaF508), was incubated in a higher ionic strength solution containing mercaptoethanol prior to the addition of primers to the denatured cellular DNA. A single cell in 5 microl lysis buffer was incubated at 65 degrees C for 15 min, cooled, and neutralized with an equal volume of neutralizing buffer. A 5 microl aliquot of a solution X containing 50 mM MgCl(2), 1 M NaCl, and 10 mM mercaptoethanol was added to the neutralized cell lysate, followed by incubation at 93 degrees C for 15 min. The step was crucial to the successful amplification of CFDeltaF508 DNA fragment. The incubation of cell lysate in solution with the high level of sulphydryl reducing agent and a high ionic strength of about 0.45, at 93 degrees C for 15 min, might denature many chromatin-binding proteins and also ensure the complete dissociation of dsDNA. After the addition of PCR mix, the resulting reaction mixture still contained a sufficient level of sulphydryl reducing agent and 0.135 total ionic strength. This might reduce significantly the interference of various protein factors with DNA, and favour the primer-template annealing. The efficient initial annealing of the primers to target DNA sequences would facilitate PCR amplification efficacy. In conclusion, in more than 80 single cells tested (apart from one) the CFDeltaF508 defect was successfully demonstrated with the present protocol (>99 per cent), without using fluorescent primers and expensive automatic instrumentation.
Authors:
Y H Tsai
Related Documents :
8770507 - A sensitive and specific pcr method to detect helicobacter felis in a conventional mous...
15151247 - Detection of bacillus spores using pcr and fta filters.
1430057 - Type-specific identification of influenza viruses a, b and c by the polymerase chain re...
10582357 - Long pcr for vntr analysis.
18668497 - Combining g-quadruplex targeting motifs on a single peptide nucleic acid scaffold: a hy...
6179947 - Mouse dna replicase. dna polymerase associated with a novel rna polymerase activity to ...
Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Prenatal diagnosis     Volume:  19     ISSN:  0197-3851     ISO Abbreviation:  Prenat. Diagn.     Publication Date:  1999 Nov 
Date Detail:
Created Date:  2000-01-06     Completed Date:  2000-01-06     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  8106540     Medline TA:  Prenat Diagn     Country:  ENGLAND    
Other Details:
Languages:  eng     Pagination:  1048-51     Citation Subset:  IM    
Affiliation:
Research Centre for Reproductive Medicine and Sciences, Graduate Institute of Cell and Molecular Biology, Taipei Medical College, Taipei, Taiwan.
Export Citation:
APA/MLA Format     Download EndNote     Download BibTex
MeSH Terms
Descriptor/Qualifier:
Cost-Benefit Analysis
Cystic Fibrosis / genetics*
DNA / analysis
DNA Fragmentation
DNA Primers
Female
Fertilization in Vitro* / methods
Gene Amplification
Humans
Lymphocytes
Mutation
Polymerase Chain Reaction / economics*,  methods
Pregnancy
Preimplantation Diagnosis* / methods
Chemical
Reg. No./Substance:
0/DNA Primers; 9007-49-2/DNA

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


Previous Document:  Prenatal consultation after a fetal anomaly scan: videotaped exploration of physician's attitude and...
Next Document:  Prenatal diagnosis of a fetal left atrial diverticulum.