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Human vigilin, a multi\u2010KH\u2010domain nucleic acid\u2010binding protein, is associated with alpha satellites of centromeres. DDP1, a vigilin's homolog, is implicated with chromatin condensation and segregation. The expression of vigilin was previously reported to elevate in highly proliferating tissues and increased in a subset of hepatocellular carcinoma patients. Other studies showed that vigilin interacts with CTCF, contributes to regulation of imprinted genes Igf2\/H19, and colocalizes with HP1\u03b1 on heterochromatic satellite 2 and \u03b2\u2010satellite repeats. These studies indicate that human vigilin might be involved in chromatin remodeling and regular cell growth. To investigate the potential role of human vigilin in cell cycle, the correlations between vigilin and chromosomal condensation and segregation were studied. Depletion of human vigilin by RNA interference in HepG2 cells resulted in chromosome undercondensation and various chromosomal defects during mitotic phase, including chromosome misalignments, lagging chromosomes, and chromosome bridges. Aberrant polyploid nucleus in telophase was also observed. Unlike the abnormal staining pattern of chromosomes, the shape of spindle was normal. Furthermore, the chromatin showed a greater sensitivity to MNase digestion. Collectively, our findings show that human vigilin apparently participates in chromatin condensation and segregation.<\/jats:p><\/jats:sec>","DOI":"10.1002\/cbin.10496","type":"journal-article","created":{"date-parts":[[2015,6,2]],"date-time":"2015-06-02T05:11:10Z","timestamp":1433221870000},"page":"1234-1241","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":2,"title":["Disruption of human vigilin impairs chromosome condensation and segregation"],"prefix":"10.1002","volume":"39","author":[{"given":"Ling","family":"Wei","sequence":"first","affiliation":[{"name":"Department of Biochemistry and Molecular Biology West China School of Preclinical and Forensic Medicine Sichuan University Chengdu 610041 Sichuan China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Xiaoyan","family":"Xie","sequence":"additional","affiliation":[{"name":"Department of Biochemistry and Molecular Biology West China School of Preclinical 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