Yan Zhao1, Koji Ando2, Eiji Oki3, Ayae Ikawa-Yoshida4, Satoshi Ida2, Yasue Kimura2, Hiroshi Saeki2, Hiroyuki Kitao5, Masaru Morita2, Yoshihiko Maehara2. 1. Department of Surgery and Science, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan The Third Surgery Department, Liaoning Cancer Hospital and Institute, Shenyang, P.R. China. 2. Department of Surgery and Science, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan. 3. Department of Surgery and Science, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan okieiji@surg2.med.kyushu-u.ac.jp. 4. Department of Surgery and Science, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan Chugai Research Institute for Medical Science, Inc., Gotnemba, Japan. 5. Department of Molecular Oncology, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan.
Abstract
BACKGROUND/AIM: Defects in mitotic checkpoint and p53-dependent pathways associate with chromosomal instability. In the present study, we investigated the interplay between BUBR1 and p53 and their association with genetic instability in colorectal cancer. PATIENTS AND METHODS: 139 colorectal cases were examined for BUBR1, p53 and genetic instability indicators. BUBR1 expression was evaluated by immunohistochemistry and TP53 gene was directly sequenced. DNA ploidy was studied by laser scanning cytometry; MSI and TP53 loss of heterozygosity was also examined. RESULTS: 64% of cases had high BUBR1 expression and were associated with the TP53 mutation. High BUBR1 expression and TP53 mutation associated with DNA aneuploidy and showed an inverse association with MSI. Cases with high BUBR1 expression and TP53 mutation had profound aneuploidy phenotypes and less frequent MSI compared to cases with one or neither aberration. CONCLUSION: Our findings indicated an interplay between BUBR1 and p53 in colorectal cancer. Altered expression of both molecules was associated with chromosomal instability. Copyright
BACKGROUND/AIM: Defects in mitotic checkpoint and p53-dependent pathways associate with chromosomal instability. In the present study, we investigated the interplay between BUBR1 and p53 and their association with genetic instability in colorectal cancer. PATIENTS AND METHODS: 139 colorectal cases were examined for BUBR1, p53 and genetic instability indicators. BUBR1 expression was evaluated by immunohistochemistry and TP53 gene was directly sequenced. DNA ploidy was studied by laser scanning cytometry; MSI and TP53 loss of heterozygosity was also examined. RESULTS: 64% of cases had high BUBR1 expression and were associated with the TP53 mutation. High BUBR1 expression and TP53 mutation associated with DNA aneuploidy and showed an inverse association with MSI. Cases with high BUBR1 expression and TP53 mutation had profound aneuploidy phenotypes and less frequent MSI compared to cases with one or neither aberration. CONCLUSION: Our findings indicated an interplay between BUBR1 and p53 in colorectal cancer. Altered expression of both molecules was associated with chromosomal instability. Copyright
Authors: Emilia Modolo Pinto; Carlos Rodriguez-Galindo; John Kim Choi; Stanley Pounds; Zhifa Liu; Geoffrey Neale; David Finkelstein; John M Hicks; Alberto S Pappo; Bonald C Figueiredo; Raul C Ribeiro; Gerard P Zambetti Journal: Clin Cancer Res Date: 2016-06-15 Impact factor: 12.531
Authors: Anna V Kudryavtseva; Anastasia V Lipatova; Andrew R Zaretsky; Alexey A Moskalev; Maria S Fedorova; Anastasiya S Rasskazova; Galina A Shibukhova; Anastasiya V Snezhkina; Andrey D Kaprin; Boris Y Alekseev; Alexey A Dmitriev; George S Krasnov Journal: Oncotarget Date: 2016-08-16