Mutation analysis of p31comet gene, a negative regulator of Mad2, in human hepatocellular carcinoma

Mi Yong Yun, Bum Kim Sang, Sunhoo Park, Ju Han Chul, Young Hoon Han, Hee Yoon Sun, Hoon Kim Sang, Chang Min Kim, Dong Wook Choi, Myung Haing Cho, Gil Hong Park, Kee Ho Lee

Research output: Contribution to journalArticlepeer-review

5 Citations (Scopus)


Failure of mitotic checkpoint machinery leads to the chromosomal missegregation and nuclear endoreduplication, thereby driving the emergence of aneuploidy and tetraploidy population. Although abnormal nuclear ploidy and the resulting impairment of mitotic checkpoint function are typical physiological event leading to human hepatocellular carcinoma, any mutational change of mitotic checkpoint regulators has not yet been discovered. Therefore, we investigated the mutation of p31comet, a recently identified mitotic checkpoint regulator, in human hepatocellular carcinoma. Of 51 human hepatocellular carcinoma tissue and 6 cell lines tested, five samples exhibited nucleotide sequence variations dispersed on four sites within the entire coding sequence. Among these sites with sequence substitutions, three were found to be missense mutation accompanied with amino acid change but one was a silent mutation. Of these sequence substitutions, two were present in both tumor and non-tumor liver tissues, suggesting the possibility of polymorphism. The present findings indicate that p31comet does not have an impact on the formation of aneuploidy and tetraploidy found in human hepatocellular carcinoma.

Original languageEnglish
Pages (from-to)508-513
Number of pages6
JournalExperimental and Molecular Medicine
Issue number4
Publication statusPublished - 2007 Aug 31
Externally publishedYes


  • Carcinoma, hepatocellular
  • Human
  • MAD2L1 protein
  • Mitosis
  • Mutation

ASJC Scopus subject areas

  • Biochemistry
  • Molecular Medicine
  • Molecular Biology
  • Clinical Biochemistry


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