Promoter profiling and coexpression data analysis identifies 24 novel genes that are coregulated with AMPA receptor genes, GRIAs
GENOMICS
Authors: Chong, Allen; Zhang, Zhuo; Choi, Kwok Pui; Choudhary, Vidhu; Djamgoz, Mustafa B. A.; Zhang, Guanglan; Bajic, Vladimir B.
Abstract
We identified a set of transcriptional elements that are conserved and overrepresented within the promoters of human, mouse, and rat GRIAs by comparing these promoters against a collection of 10,741 gene promoters. Cells regulate functional groups of genes by coordinating the transcriptional and/or posttranscriptional mRNA levels of interacting genes. As such, it is expected that functional groups of genes share the same transcriptional features within their promoters. We found 47 genes whose promoters contain the same combination of transcriptional elements that are overrepresented within the promoters of the GRIA gene family. Coexpressed genes may be transcriptionally coregulated, which in turn suggests that these genes may play complementary roles within a particular functional context. Using microarray expression data, we found 24 (of the 47) genes that share not only a similar promoter profile with GRIAs but also a well-correlated gene expression profile and, thus, we believe these to be coregulated with GRIAs. (c) 2006 Elsevier Inc. All rights reserved.
Association Between Interleukin-16 Polymorphisms and Risk of Coronary Artery Disease
DNA AND CELL BIOLOGY
Authors: Wu, Jian; Wang, Yin; Zhang, Yi; Li, Longjiang
Abstract
Growing evidence has shown that inflammation plays crucial roles in the development of coronary artery disease (CAD). Interleukin-16 (IL-16), a multifunctional cytokine, is involved in a series of inflammatory disorders. The aim of this study was to investigate the association between IL-16 polymorphisms and risk of CAD. We analyzed two polymorphisms of IL-16 (rs4778889 T/C and rs11556218 T/G) in 157 patients with CAD and 202 healthy controls by using polymerase chain reaction-restriction fragment length polymorphism and DNA sequencing methods. The TG/GG genotypes of rs11556218 T/G were associated with a significantly increased risk of CAD as compared with the TT genotype (odds ratio = 1.77; 95% confidence intervals, 1.16-2.71). This finding indicates that IL-16 may be used as a genetic marker for CAD susceptibility.