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Related Experiment Videos

Computerized polymorphic marker identification: experimental validation and a predicted human polymorphism catalog

J W Fondon1, G M Mele, R I Brezinschek

  • 1McDermott Center for Human Growth and Development and the Center for Biomedical Inventions, The University of Texas Southwestern Medical Center, Dallas, TX 75235, USA.

Proceedings of the National Academy of Sciences of the United States of America
|June 24, 1998
PubMed
Summary

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This summary is machine-generated.

A new computational system, POMPOUS, efficiently predicts polymorphic markers from human genomic sequence. This tool aids genetic researchers in identifying variable regions and designing PCR primers for genetic studies.

Area of Science:

  • Genomics
  • Bioinformatics
  • Molecular Biology

Background:

  • Identifying polymorphic loci is crucial for genetic research and disease association studies.
  • Existing methods for finding polymorphic markers can be time-consuming and inefficient.
  • Tandem repeats are a significant source of genetic variation in the human genome.

Purpose of the Study:

  • To develop and validate a computational system for the efficient prediction of polymorphic loci from human genomic sequence.
  • To create a tool that detects, scores, and designs primers for polymorphic tandem repeats.
  • To provide researchers with a web-accessible resource for identifying polymorphic markers.

Main Methods:

  • Development of the POMPOUS (polymorphic marker prediction of ubiquitous simple sequences) software suite.

Related Experiment Videos

  • Detection of tandem repeats (dinucleotides to 250-mers) and scoring of their polymorphism levels.
  • Design of flanking primers for PCR amplification of predicted polymorphic loci.
  • Validation on a 750-kb region of human chromosome 3p21.3 using DNA from 36 paired lymphoblastoid and lung cancer cell lines.

    • Main Results:

    • POMPOUS predicted 33 variable loci in the targeted chromosome region.
    • Of the predicted loci, 67% (22/33) were found to be polymorphic in the study population (average heterozygosity 0.42).
    • Allele loss was detected in 75% (27/36) of tumor lines using the identified markers.
    • A catalog of 13,261 potential polymorphic markers and primer sets was generated from analyzing over 141 million base pairs of human genomic sequence.

    Conclusions:

    • The POMPOUS system provides an efficient and rapid method for identifying polymorphic markers in human genomic DNA.
    • The validated approach aids in the discovery of genetic variations relevant to diseases like lung and breast carcinoma.
    • POMPOUS is available via a World Wide Web site, offering a valuable resource for the genetic research community.