Gene silencing of the tyrosine phosphatase SHP1 gene by aberrant methylation in leukemias/lymphomas

Takashi Oka, Mamoru Ouchida, Maho Koyama, Yoichiro Ogama, Shinichi Takada, Yoko Nakatani, Takehiro Tanaka, Tadashi Yoshino, Kazuhiko Hayashi, Nobuya Ohara, Eisaku Kondo, Kiyoshi Takahashi, Junjiro Tsuchiyama, Mitsune Tanimoto, Kenji Shimizu, Tadaatsu Akagi

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170 Citations (Scopus)


High-frequent silencing of hematopoietic cell-specific protein-tyrosine phosphatase SHP1 gene by promoter methylation was detected in various kinds of leukemias and lymphomas, as well as in many hematopoietic cell lines, which is supported by our previous observation of strong decrease of SHP1 mRNA and protein. The promoter methylation of the SHP1 gene was clearly correlated with the clinical stage. Loss of heterozygosity with microsatellite markers near the SHP1 gene was shown in 79% of informative acute lymphoblastic leukemia cases. These results suggest that functional loss of SHP1 is associated with the pathogenesis of leukemias/lymphomas.

Original languageEnglish
Pages (from-to)6390-6394
Number of pages5
JournalCancer Research
Issue number22
Publication statusPublished - Nov 15 2002


ASJC Scopus subject areas

  • Oncology
  • Cancer Research

Cite this

Oka, T., Ouchida, M., Koyama, M., Ogama, Y., Takada, S., Nakatani, Y., Tanaka, T., Yoshino, T., Hayashi, K., Ohara, N., Kondo, E., Takahashi, K., Tsuchiyama, J., Tanimoto, M., Shimizu, K., & Akagi, T. (2002). Gene silencing of the tyrosine phosphatase SHP1 gene by aberrant methylation in leukemias/lymphomas. Cancer Research, 62(22), 6390-6394.