Duplication of MER115 on chromosome 4 in patients with primary biliary cirrhosis

Xu, Lizhe, Guo, Linsheng, Shen, Zhiwei, Loss, George, Gish, Robert, Wasilenko, Shawn and Mason, Andrew L. (2009) Duplication of MER115 on chromosome 4 in patients with primary biliary cirrhosis. Liver International, 29 3: 375-383. doi:10.1111/j.1478-3231.2008.01888.x

Author Xu, Lizhe
Guo, Linsheng
Shen, Zhiwei
Loss, George
Gish, Robert
Wasilenko, Shawn
Mason, Andrew L.
Title Duplication of MER115 on chromosome 4 in patients with primary biliary cirrhosis
Journal name Liver International   Check publisher's open access policy
ISSN 1478-3223
Publication date 2009-03
Year available 2008
Sub-type Article (original research)
DOI 10.1111/j.1478-3231.2008.01888.x
Volume 29
Issue 3
Start page 375
End page 383
Total pages 9
Place of publication Malden, MA, United States
Publisher Wiley-Blackwell Publishing
Language eng
Formatted abstract
Background: Primary biliary cirrhosis (PBC) is a complex disease with genetic and environmental influences. The disease is more prevalent in families with PBC and candidate gene case–control studies have linked PBC with DRB1*08 human leucocyte antigen class II alleles.
Aims: The goal of this study was to characterize a MER115 intergenic region on chromosome 4 as a putative genetic variant associated with PBC.
Methods/Results: This region was incidentally identified during investigations to discover candidate microbial agents using representational difference analysis (RDA) with liver samples from patients with PBC and primary sclerosing cholangitis (PSC). blast search analysis of all the RDA products from the PBC liver revealed genomic sequences, whereas Escherichia coli, mycoplasma and hepatitis B virus DNA were found in the PSC liver. We identified one of the PBC RDA products as an ancestral repeat, referred to as MER115. Southern blot analysis with the PBC product uncovered a restriction fragment length polymorphism in PBC patients' liver. Southern blot hybridization signal showed increased signal intensity in PBC vs. control patients' DNA (P<0.005) and slot blot hybridization studies confirmed a copy number variation of the MER115 in hepatic DNA of PBC vs. control patients (P=0.02).
Conclusions: Further comparative genetic studies will be required to determine the extent of genomic duplication associated with MER115 and provide data on the possible copy number variants of genes close to this intergenic region in patients with PBC.
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Non-UQ
Additional Notes Article first published online: 15 OCT 2008

Document type: Journal Article
Sub-type: Article (original research)
Collection: School of Medicine Publications
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Citation counts: TR Web of Science Citation Count  Cited 4 times in Thomson Reuters Web of Science Article | Citations
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Created: Mon, 14 Mar 2011, 09:41:33 EST