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Four single-nucleotide polymorphisms in the human BUB1 gene.

T Kanbe1, T Nobukuni, H Kawasaki

  • 1Tumor Suppression and Functional Genomics Project, National Cancer Center Research Institute, Tokyo, Japan.

Journal of Human Genetics
|April 20, 2001
PubMed
Summary
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Researchers identified four single-nucleotide polymorphisms in the human BUB1 gene, crucial for the mitotic spindle checkpoint. These genetic variations may help study cancer susceptibility.

Area of Science:

  • Genetics
  • Molecular Biology
  • Cancer Research

Background:

  • The BUB1 gene encodes a kinase essential for the mitotic spindle checkpoint, a critical process in cell division.
  • Mutations in the human BUB1 (hBUB1) gene have been implicated in the development of certain human cancers.

Purpose of the Study:

  • To identify and characterize single-nucleotide polymorphisms (SNPs) within the human BUB1 gene.
  • To evaluate the potential utility of these identified BUB1 gene polymorphisms as genetic markers for cancer susceptibility.

Main Methods:

  • Analysis of the human BUB1 gene sequence to detect single-nucleotide polymorphisms.
  • Characterization of the location and potential functional impact (amino acid substitution) of identified polymorphisms.

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Main Results:

  • Four single-nucleotide polymorphisms were identified in the BUB1 gene.
  • One non-synonymous SNP (c.1124C>T) results in a serine to phenylalanine substitution at codon 375.
  • Three other SNPs, including two in coding regions (c.279G>C, c.1293T>C) and one intronic (IVS9-8T>C), do not alter the amino acid sequence.

Conclusions:

  • The identified BUB1 gene polymorphisms represent novel genetic variations.
  • These polymorphisms may serve as valuable tools for future genetic studies investigating susceptibility to various human cancers.