TY  - JOUR
A1  - Munz, Matthias
A1  - Richter, Gesa M.
A1  - Loos, Bruno G.
A1  - Jepsen, Søren
A1  - Divaris, Kimon
A1  - Offenbacher, Steven
A1  - Teumer, Alexander
A1  - Holtfreter, Birte
A1  - Kocher, Thomas
A1  - Bruckmann, Corinna
A1  - Jockel-Schneider, Yvonne
A1  - Graetz, Christian
A1  - Munoz, Loreto
A1  - Bhandari, Anita
A1  - Tennstedt, Stephanie
A1  - Staufenbiel, Ingmar
A1  - van der Velde, Nathalie
A1  - Uitterlinden, André G.
A1  - de Groot, Lisette C. P. G. M.
A1  - Wellmann, Jürgen
A1  - Berger, Klaus
A1  - Krone, Bastian
A1  - Hoffmann, Per
A1  - Laudes, Matthias
A1  - Lieb, Wolfgang
A1  - Andre, Franke
A1  - Dommisch, Henrik
A1  - Erdmann, Jeanette
A1  - Schaefer, Arne S.
T1  - Genome-wide association meta-analysis of coronary artery disease and periodontitis reveals a novel shared risk locus
JF  - Scientific Reports
N2  - Evidence for a shared genetic basis of association between coronary artery disease (CAD) and periodontitis (PD) exists. To explore the joint genetic basis, we performed a GWAS meta-analysis. In the discovery stage, we used a German aggressive periodontitis sample (AgP-Ger; 680 cases vs 3,973 controls) and the CARDIoGRAMplusC4D CAD meta-analysis dataset (60,801 cases vs 123,504 controls). Two SNPs at the known CAD risk loci ADAMTS7 (rs11634042) and VAMP8 (rs1561198) passed the pre-assigned selection criteria (PAgP-Ger < 0.05; PCAD < 5 × 10−8; concordant effect direction) and were replicated in an independent GWAS meta-analysis dataset of PD (4,415 cases vs 5,935 controls). SNP rs1561198 showed significant association (PD[Replication]: P = 0.008 OR = 1.09, 95% CI = [1.02–1.16]; PD [Discovery + Replication]: P = 0.0002, OR = 1.11, 95% CI = [1.05–1.17]). For the associated haplotype block, allele specific cis-effects on VAMP8 expression were reported. Our data adds to the shared genetic basis of CAD and PD and indicate that the observed association of the two disease conditions cannot be solely explained by shared environmental risk factors. We conclude that the molecular pathway shared by CAD and PD involves VAMP8 function, which has a role in membrane vesicular trafficking, and is manipulated by pathogens to corrupt host immune defense.
KW  - vesicle-associated membrane protein 8 (VAMP8)
KW  - ADAM metallopeptidase with thrombospondin type 1 motif 5 (ADAMTS7)
KW  - shared genetic basis
KW  - genome-wide association studies (GWAS)
KW  - GWAS meta-analysis
Y1  - 2018
U6  - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:20-opus-231647
VL  - 8
ER  - 
TY  - JOUR
A1  - Richter, Gesa M.
A1  - Kruppa, Jochen
A1  - Munz, Matthias
A1  - Wiehe, Ricarda
A1  - Häsler, Robert
A1  - Franke, Andre
A1  - Martins, Orlando
A1  - Jockel-Schneider, Yvonne
A1  - Bruckmann, Corinna
A1  - Dommisch, Henrik
A1  - Schaefer, Arne S.
T1  - A combined epigenome- and transcriptome-wide association study of the oral masticatory mucosa assigns CYP1B1 a central role for epithelial health in smokers
JF  - Clinical Epigenetics
N2  - Background
The oral mucosa has an important role in maintaining barrier integrity at the gateway to the gastrointestinal and respiratory tracts. Smoking is a strong environmental risk factor for the common oral inflammatory disease periodontitis and oral cancer. Cigarette smoke affects gene methylation and expression in various tissues. This is the first epigenome-wide association study (EWAS) that aimed to identify biologically active methylation marks of the oral masticatory mucosa that are associated with smoking.

Results
Ex vivo biopsies of 18 current smokers and 21 never smokers were analysed with the Infinium Methylation EPICBeadChip and combined with whole transcriptome RNA sequencing (RNA-Seq; 16 mio reads per sample) of the same samples. We analysed the associations of CpG methylation values with cigarette smoking and smoke pack year (SPY) levels in an analysis of covariance (ANCOVA). Nine CpGs were significantly associated with smoking status, with three CpGs mapping to the genetic region of CYP1B1 (cytochrome P450 family 1 subfamily B member 1;best p=5.5x10(-8)) and two mapping to AHRR (aryl-hydrocarbon receptor repressor; best p=5.9x10(-9)). In the SPY analysis, 61 CpG sites at 52 loci showed significant associations of the quantity of smoking with changes in methylation values. Here, the most significant association located to the gene CYP1B1, with p=4.0x10(-10). RNA-Seq data showed significantly increased expression of CYP1B1 in smokers compared to non-smokers (p=2.2x10(-14)), together with 13 significantly upregulated transcripts. Six transcripts were significantly downregulated. No differential expression was observed for AHRR. In vitro studies with gingival fibroblasts showed that cigarette smoke extract directly upregulated the expression of CYP1B1.

Conclusion
This study validated the established role of CYP1B1 and AHRR in xenobiotic metabolism of tobacco smoke and highlights the importance of epigenetic regulation for these genes. For the first time, we give evidence of this role for the oral masticatory mucosa.
KW  - EWAS
KW  - Methylation
KW  - Expression
KW  - Masticatory mucosa
KW  - CYP1B1
KW  - AHRR
KW  - Cytochrome P 450 pathway
KW  - OSCC
KW  - Smoking
Y1  - 2019
U6  - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:20-opus-226175
VL  - 11
ER  -