scholarly journals Pregnancy exposure to phthalates and DNA methylation in male placenta — An epigenome-wide association study

2022 ◽  
Vol 160 ◽  
pp. 107054
Author(s):  
Paulina Jedynak ◽  
Jörg Tost ◽  
Antonia M. Calafat ◽  
Ekaterina Bourova-Flin ◽  
Lucile Broséus ◽  
...  
2021 ◽  
Vol 13 (1) ◽  
Author(s):  
Chen Yao ◽  
Roby Joehanes ◽  
Rory Wilson ◽  
Toshiko Tanaka ◽  
Luigi Ferrucci ◽  
...  

Abstract Background DNA methylation is a key epigenetic modification that can directly affect gene regulation. DNA methylation is highly influenced by environmental factors such as cigarette smoking, which is causally related to chronic obstructive pulmonary disease (COPD) and lung cancer. To date, there have been few large-scale, combined analyses of DNA methylation and gene expression and their interrelations with lung diseases. Results We performed an epigenome-wide association study of whole blood gene expression in ~ 6000 individuals from four cohorts. We discovered and replicated numerous CpGs associated with the expression of cis genes within 500 kb of each CpG, with 148 to 1,741 cis CpG-transcript pairs identified across cohorts. We found that the closer a CpG resided to a transcription start site, the larger its effect size, and that 36% of cis CpG-transcript pairs share the same causal genetic variant. Mendelian randomization analyses revealed that hypomethylation and lower expression of CHRNA5, which encodes a smoking-related nicotinic receptor, are causally linked to increased risk of COPD and lung cancer. This putatively causal relationship was further validated in lung tissue data. Conclusions Our results provide a large and comprehensive association study of whole blood DNA methylation with gene expression. Expression platform differences rather than population differences are critical to the replication of cis CpG-transcript pairs. The low reproducibility of trans CpG-transcript pairs suggests that DNA methylation regulates nearby rather than remote gene expression. The putatively causal roles of methylation and expression of CHRNA5 in relation to COPD and lung cancer provide evidence for a mechanistic link between patterns of smoking-related epigenetic variation and lung diseases, and highlight potential therapeutic targets for lung diseases and smoking cessation.


2021 ◽  
Vol 154 ◽  
pp. 106556
Author(s):  
Rongbin Xu ◽  
Shuai Li ◽  
Shanshan Li ◽  
Ee Ming Wong ◽  
Melissa C. Southey ◽  
...  

2020 ◽  
Vol 14 ◽  
Author(s):  
Mette Soerensen ◽  
Dominika Marzena Hozakowska-Roszkowska ◽  
Marianne Nygaard ◽  
Martin J. Larsen ◽  
Veit Schwämmle ◽  
...  

2014 ◽  
Vol 73 (Suppl 2) ◽  
pp. 340.2-340
Author(s):  
A.J. Svendsen ◽  
K. Gervin ◽  
R. Lyle ◽  
C. Nielsen ◽  
G. Houen ◽  
...  

2015 ◽  
Vol 47 (11) ◽  
pp. 1282-1293 ◽  
Author(s):  
Norihiro Kato ◽  
◽  
Marie Loh ◽  
Fumihiko Takeuchi ◽  
Niek Verweij ◽  
...  

2021 ◽  
pp. 118024
Author(s):  
Paulina Jedynak ◽  
Jörg Tost ◽  
Antonia M. Calafat ◽  
Ekaterina Bourova-Flin ◽  
Florence Busato ◽  
...  

2017 ◽  
Vol 7 (8) ◽  
pp. e1202-e1202 ◽  
Author(s):  
F Serpeloni ◽  
K Radtke ◽  
S G de Assis ◽  
F Henning ◽  
D Nätt ◽  
...  

Epigenetics ◽  
2017 ◽  
Vol 12 (2) ◽  
pp. 139-148 ◽  
Author(s):  
Lingzhen Dai ◽  
Amar Mehta ◽  
Irina Mordukhovich ◽  
Allan C. Just ◽  
Jincheng Shen ◽  
...  

2020 ◽  
Vol 12 (1) ◽  
Author(s):  
Mark W. Logue ◽  
◽  
Mark W. Miller ◽  
Erika J. Wolf ◽  
Bertrand Russ Huber ◽  
...  

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