Borealin/Dasra B is a cell cycle-regulated chromosomal passenger protein and its nuclear accumulation is linked to poor prognosis for human gastric cancer

Journal Article · Sat Apr 15 04:00:00 EDT 2006 · Experimental Cell Research

DOI:https://doi.org/10.1016/j.yexcr.2005.12.015· OSTI ID:20775353

Chang, J -L ^[1]; Chen, T -H ^[2]; Wang, C -F ^[3]; Chiang, Y -H ^[2]; Huang, Y -L ^[3]; Wong, F -H ^[2]; Chou, C -K ^[3]; Chen, C -M ^[2]

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1. Department of Pathology, Armed Forces Taoyuan General Hospital, Taoyuan County, Taiwan (China)
2. Faculty of Life Sciences and Institute of Genome Sciences, National Yang-Ming University, Taipei, Taiwan (China)
3. Department of Life Sciences, Chang Gung University, Taoyuan, Taiwan (China)

Chromosomal passenger proteins including Aurora B, Survivin, and Borealin/Dasra B, also called CDCA8/FLJ10468, are known to play crucial roles during mitosis and cell division. Inappropriate chromosomal segregation and cell division may cause auneuploidy leading to cancer. However, it is still unclear how the expression of chromosomal passenger proteins may be linked to cancer. In this study, we demonstrated that Borealin is a cell cycle-regulated gene and is upregulated at G2-M phases of the cell cycle. We showed that Borealin interacts with Survivin but not with Aurora B. The interaction domain of Survivin in Borealin was mapped to the N-terminal 92 amino-acid residues of Borealin. To examine the linkage between expression of Borealin and cancer, we performed immunohistochemistry analysis using anti-Borealin specific antibody on the paraffin-embedded gastric cancer tissues. Our results showed that Borealin expression is significantly correlated with Survivin (P = 0.003) and Ki67 (P = 0.007) in gastric cancer. Interestingly, an increased nuclear Borealin level reveals borderline association with a poor survival rate (P = 0.047). Taken together, our results demonstrated that Borealin is a cell cycle-regulated chromosomal passenger protein and its aberrant expression is linked to a poor prognosis for gastric cancer.

• OSTI ID: 20775353
• Journal Information: Experimental Cell Research, Journal Name: Experimental Cell Research Journal Issue: 7 Vol. 312; ISSN 0014-4827; ISSN ECREAL
• Country of Publication: United States
• Language: English

Related Subjects

60 APPLIED LIFE SCIENCES
AMINO ACIDS
ANTIBODIES
CELL CYCLE
GENES
MITOSIS
NEOPLASMS
PARAFFIN
PROTEINS