Multinuclearity and increased ploidy caused by overexpression of the Aurora- and Ipl1-like midbody-associated protein mitotic kinase in human cancer cells

Masaaki Tatsuka, Hiroshi Katayama, Takahide Ota, Takuji Tanaka, Shizuo Odashima, Fumio Suzuki, Yasuhiko Terada

研究成果: Article

278 引用 (Scopus)

抄録

Aurora- and Ipl1-like midbody-associated protein (AIM-1) is a serine/threonine kinase that is structurally related to Drosophila aurora and Saccharomyces cerevisiae Ipl1, both of which are required for chromosome segregation. A kinase-negative form of AIM-1 inhibits the formation of cleavage furrow without affecting nuclear division, indicating that the gene controls entry into cytokinesis during M phase in mammalian cells. A human gene that encodes the protein AIM-1 was overexpressed in colorectal and other tumor cell lines. The regulation of AIM-1 expression was cell cycle dependent in normal and tumor cells, and the maximum accumulation was observed at G2- M. Exogenous overexpression of wild-type AIM-1 produced multinuclearity in human cells, suggesting that the excess amount of AIM-1 had a dominant- negative effect on the overexpressing cells. In long-term culture of AIM-1- overexpressing cells, multiple nuclei in a cell were occasionally fused, and then an increased ploidy and aneuploidy were induced. Thus, the overexpression of AIM-1 in colorectal tumor cell lines is thought to have a causal relationship with multinuclearity and increased ploidy. Cytokinesis error caused by AIM-1 overexpression is a major factor in the predisposition of tumor cells to the perturbation of chromosomal integrity that is commonly observed in human neoplasia. Thus, defects of pathways essential for mitotic regulation are important during human cancer development.

元の言語English
ページ(範囲)4811-4816
ページ数6
ジャーナルCancer Research
58
発行部数21
出版物ステータスPublished - 1998 11 1
外部発表Yes

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Ploidies
Protein Kinases
Neoplasms
Cytokinesis
Tumor Cell Line
Colorectal Neoplasms
Cell Nucleus Division
Chromosome Segregation
Protein-Serine-Threonine Kinases
Human Development
Aneuploidy
Cell Nucleus
Cell Division
Drosophila
Saccharomyces cerevisiae
Cell Cycle
Proteins
Phosphotransferases
Genes

ASJC Scopus subject areas

  • Cancer Research
  • Oncology

これを引用

Multinuclearity and increased ploidy caused by overexpression of the Aurora- and Ipl1-like midbody-associated protein mitotic kinase in human cancer cells. / Tatsuka, Masaaki; Katayama, Hiroshi; Ota, Takahide; Tanaka, Takuji; Odashima, Shizuo; Suzuki, Fumio; Terada, Yasuhiko.

:: Cancer Research, 巻 58, 番号 21, 01.11.1998, p. 4811-4816.

研究成果: Article

Tatsuka, Masaaki ; Katayama, Hiroshi ; Ota, Takahide ; Tanaka, Takuji ; Odashima, Shizuo ; Suzuki, Fumio ; Terada, Yasuhiko. / Multinuclearity and increased ploidy caused by overexpression of the Aurora- and Ipl1-like midbody-associated protein mitotic kinase in human cancer cells. :: Cancer Research. 1998 ; 巻 58, 番号 21. pp. 4811-4816.
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