Proteomic alterations of the variants of human aldehyde dehydrogenase isozymes correlate with hepatocellular carcinoma

Kang Sik Park, Sang Yun Cho, Hoguen Kim, Young Ki Paik

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To develop novel markers for hepatocellular carcinomas (HCC), 10 cases were analyzed by 2-dimensional electrophoresis (2DE) and matrix-assisted laser desorption ionization mass spectrometry. Results were compared to those of paired adjacent nontumorous liver tissues. Comparative analysis of the respective spot patterns in 2DE revealed that 3 variants of class 3 aldehyde dehydrogenase (ALDH-3) newly appeared while 2 variants of ALDH-2 diminished to undetectable levels in HCC. However, 4 ALDH-1 variants with different pls remained unaffected. This pattern of concomitant appearance and disappearance of ALDH-3 and ALDH-2 variants was consistently observed in all HCC tissues. Our results suggest that alterations of ALDH isozyme variants may be closely correlated to HCC and that proteomic analysis of these proteins might be a novel approach to identify the molecular events in detail during hepatocarcinogenesis.

Original languageEnglish
Pages (from-to)261-265
Number of pages5
JournalInternational Journal of Cancer
Issue number2
Publication statusPublished - 2002 Jan 10


All Science Journal Classification (ASJC) codes

  • Oncology
  • Cancer Research

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