Identification of Caspase-6 as a Candidate Tumor Suppressor Gene at 4q25 in Oral Cancer

Yasuo Shinno, Mehmet Gunduz, Esra Gunduz, Kenji Shimizu, Masahiro Yoshiyama, Noriyuki Nagai, Akira Yasuoka

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)


We recently reported the frequent deletion of chromosome 4q25 region in oral squamous cell carcinoma and discussed the Caspase-6 as a possible tumor suppressor gene in this region due to its near location to this hot spot. We this time examined the role of Caspase-6 in oral cancers. mRNA expression level, protein localization and gene mutation of Caspase-6 were analyzed. Reverse-transcription-PCR analysis demonstrated decreased expression in 40% and equal expression in 30% of Caspase-6 mRNA of primary tumors as compared with that matched normal samples. cDNA sequencing analysis of Caspase-6 did not reveal any somatic mutation. Caspase-6 protein localization was in similar proportion with its mRNA expression. Failure of Caspase-6 response in tumor samples as compared to normal samples could suggest Caspase-6 as a candidate tumor suppressor gene in a subset of oral cancer.

Original languageEnglish
Pages (from-to)328-329
Number of pages2
JournalJournal of Hard Tissue Biology
Issue number2
Publication statusPublished - Jan 2005

ASJC Scopus subject areas

  • Medicine (miscellaneous)
  • Biochemistry
  • Biomaterials
  • Orthopedics and Sports Medicine
  • Dentistry(all)
  • Cell Biology


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