ATM Gene Mutations Result in Both Recessive and Dominant Expression Phenotypes of Genes and MicroRNAs  Denis A. Smirnov, Vivian G. Cheung  The American.

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ATM Gene Mutations Result in Both Recessive and Dominant Expression Phenotypes of Genes and MicroRNAs  Denis A. Smirnov, Vivian G. Cheung  The American Journal of Human Genetics  Volume 83, Issue 2, Pages 243-253 (August 2008) DOI: 10.1016/j.ajhg.2008.07.003 Copyright © 2008 The American Society of Human Genetics Terms and Conditions

Figure 1 Gene-Expression Phenotypes of Noncarriers, AT Carriers, and AT Patients (A and B) An example of a gene, CDKN1A, that shows recessive pattern of expression (A) and a gene, FBXO5, that shows dominant pattern of expression (B) in response to radiation. (C and D) Twenty-two gene-expression phenotypes that show a recessive pattern of expression (C) and 29 gene-expression phenotypes that show a dominant pattern of expression (D). (E and F) Expression values were obtained with gene-expression microarrays and are presented as n-fold change relative to that of noncarriers at baseline. Two-way ANOVA was performed (p < 0.01, see Material and Methods); eight individuals per genotype were analyzed. Pathways identified with the Ingenuity program show that genes with recessive pattern (in purple) belong to the TP53-ATM pathway (E) and genes with dominant pattern (in light green) belong to the AKT-ATM pathway (F). The American Journal of Human Genetics 2008 83, 243-253DOI: (10.1016/j.ajhg.2008.07.003) Copyright © 2008 The American Society of Human Genetics Terms and Conditions

Figure 2 MicroRNA Phenotypes of Noncarriers, AT Carriers, and AT Patients Fifteen miRNA expression phenotypes that show a recessive pattern of expression (A), and seven miRNA phenotypes that show a dominant pattern of expression (B). Expression values were obtained with qRT-PCR and are presented as n-fold change relative to that of noncarriers at baseline. Two-way ANOVA was performed (p < 0.001, see Material and Methods); eight individuals per genotype were analyzed. miRNAs and their target genes that show recessive (C) and dominant (D) patterns of expression. The programs that predicted the miRNA and target-gene relationship are shown (PT = PicTar, TS = TargetScan, and MR = miRanda). Correlation coefficients for expression levels between the miRNAs and their targets are also shown. The American Journal of Human Genetics 2008 83, 243-253DOI: (10.1016/j.ajhg.2008.07.003) Copyright © 2008 The American Society of Human Genetics Terms and Conditions

Figure 3 TNFSF4 Is a Target Gene of MIRN125B (A) Protein level of TNFSF4 at baseline in AT carriers and patients as compared to noncarriers (n = 3 of each genotype). (B) The consensus binding sequence of MIRN125B located in the 3′UTR of TNFSF4 is shown. The sequence is highly conserved among species. (C) Luciferase-reporter assays in cells from noncarriers with wild-type binding sequence of MIRN125B in the 3′ UTR of TNFSF4 or mutant sequence where conserved binding site of MIRN125B was deleted (n = 3). (D) TNFSF4 mRNA levels in AT cells transfected with C.elegans miRNA or MIRN125B (n = 4). Error bars represent standard error of the mean. The American Journal of Human Genetics 2008 83, 243-253DOI: (10.1016/j.ajhg.2008.07.003) Copyright © 2008 The American Society of Human Genetics Terms and Conditions

Figure 4 CDX2 Regulates the Expression of MIRN125B (A) The expression level of CDX2 by qRT-PCR in AT carriers and patients and compared to noncarriers (n = 8 of each genotype). (B) Results of ChIP assay with CDX2 antibodies showing the binding of CDX2 to promoter of MIRN125B in AT carriers and patients as compared to noncarriers (n = 2 of each genotype). Error bars represent standard error of the mean. The American Journal of Human Genetics 2008 83, 243-253DOI: (10.1016/j.ajhg.2008.07.003) Copyright © 2008 The American Society of Human Genetics Terms and Conditions

Figure 5 Proposed Model of the Regulation of Expression Phenotypes ATM regulates transcription factors, such as CDX2, which regulate expression of microRNAs that in turn regulate expression level of genes, including TNFSF4. The American Journal of Human Genetics 2008 83, 243-253DOI: (10.1016/j.ajhg.2008.07.003) Copyright © 2008 The American Society of Human Genetics Terms and Conditions