Document Detail


Molecular approach to rapid assessment of p53 tumor suppressor mutations in esophageal tumors from stained histological slides.
MedLine Citation:
PMID:  7520333     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
The analysis of the tumor suppressor gene, p53, is of fundamental importance in prognosis and staging in many cancers; however, the molecular techniques required to analyze this gene have been expensive, time consuming, and unrelatable to the histological appearance of the samples. This research explored one model of clinically testing for specific mutations in the p53 gene by scraping selected areas of stained histological slides and analyzing for "hot-spot" p53 mutations. Selectively removing samples from the stained histological slide will be of special value in examining suspicious regions in adenomas, potential metastatic regions, and the margins of resected area. A polymerase chain reaction (PCR)-mediated restriction fragment length polymorphism (RFLP) analysis approach in which naturally occurring or primer-mediated mutagenesis-induced restriction enzyme sites were utilized to test seven hot-spot mutations. These assays were able to detect one mutated sequence in 100, and therefore, were sufficiently sensitive to be used with very heterogeneous tumors. Several of the assays could be multiplexed to reduce the number of PCRs necessary to screen for the seven mutational hot spots. Furthermore, an exact determination of the base change could be obtained by direct sequencing of the PCR products. Although this form of analysis may be applicable only to certain types of cancers (e.g., bladder, brain, colon, esophageal, gastric, thyroid, and ovarian tumors), this approach can obtain detailed mutational information from specific regions of a histological slide in a cost-effective and timely manner.
Authors:
L H Whetsell; D P Ringer; F V Schaefer
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Diagnostic molecular pathology : the American journal of surgical pathology, part B     Volume:  3     ISSN:  1052-9551     ISO Abbreviation:  Diagn. Mol. Pathol.     Publication Date:  1994 Jun 
Date Detail:
Created Date:  1994-09-21     Completed Date:  1994-09-21     Revised Date:  2004-11-17    
Medline Journal Info:
Nlm Unique ID:  9204924     Medline TA:  Diagn Mol Pathol     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  132-41     Citation Subset:  IM    
Affiliation:
H.A. Chapman Research Institute for Medical Genetics, Children's Medical Center, Tulsa, OK 74135.
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MeSH Terms
Descriptor/Qualifier:
Adenoma / genetics*
Base Sequence
DNA Probes
Esophageal Neoplasms / genetics*
Genes, p53 / genetics*
Humans
Molecular Sequence Data
Mutation
Polymerase Chain Reaction
Staining and Labeling
Tumor Cells, Cultured
Chemical
Reg. No./Substance:
0/DNA Probes

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


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