Genetic variation in 1253 immune and inflammation genes and risk of non-Hodgkin lymphoma
BLOOD
Authors: Cerhan, James R.; Ansell, Stephen M.; Fredericksen, Zachary S.; Kay, Neil E.; Liebow, Mark; Call, Timothy G.; Dogan, Ahmet; Cunningham, Julie M.; Wang, Alice H.; Liu-Mares, Wen; Macon, William R.; Jelinek, Diane; Witzig, Thomas E.; Habermann, Thomas M.; Slager, Susan L.
Abstract
Smaller-scale evaluations suggest that common genetic variation in candidate genes related to immune function may predispose to the development of non-Hodgkin lymphoma (NHL). We report an analysis of variants within genes associated with immunity and inflammation and risk of NHL using a panel of 9412 single-nucleotide polymorphisms (SNPs) from 1253 genes in a study of 458 patients with INK and 484 frequency-matched controls. We modeled haplotypes and risk of NHL, as well as the main effects for all independent SNPs from a gene in multivariate logistic regression models; we separately report results for nonsynonymous (ns) SNPs. In gene-level analyses, the strongest findings (P <= .001) were for CREB1, FGG, MAP3K5, RIPK3, LSP1, TRAF1, DUSP2, and ITGB3. In nsSNP analyses, the strongest findings (P <= .01) were for ITGB3 L59P (odds ratio [OR] = 0.66; 95% confidence interval [CI] 0.52-0.85), TLR6 V427A (OR = 5.20; Cl 1.77-15.3), SELPLG M264V (OR = 3.20; Cl 1.48-6.91), UNC84B G671S (OR = 1.50; Cl 1.12-2.00), B3GNT3 H328R (OR = 0.74; Cl 0.59-0.93), and BAT2 V1883L (OR = 0.64; Cl 0.45-0.90). Our results suggest that genetic variation in genes associated with immune response (TRAF1, RIPK3, BAT2, and TLR6), mitogen-activated protein kinase (MAPK) signaling (MAP3K5, DUSP2, and CREB1), lymphocyte trafficking and migration (B3GNT3, SELPLG, and LSP1), and coagulation pathways (FGG and ITGB3) may be important in the etiology of NHL, and should be prioritized in replication studies.
Neuronal Activity, TGF beta-Signaling and Unpredictable Chronic Stress Modulate Transcription of Gadd45 Family Members and DNA Methylation in the Hippocampus
CEREBRAL CORTEX
Authors: Grassi, Daniela; Franz, Henriette; Vezzali, Riccardo; Bovio, Patrick; Heidrich, Stefanie; Dehghanian, Fariba; Lagunas, Natalia; Belzung, Catherine; Krieglstein, Kerstin; Vogel, Tanja
Abstract
Neuronal activity is altered in several neurological and psychiatric diseases. Upon depolarization not only neurotransmitters are released but also cytokines and other activators of signaling cascades. Unraveling their complex implication in transcriptional control in receiving cells will contribute to understand specific central nervous system (CNS) pathologies and will be of therapeutically interest. In this study we depolarized mature hippocampal neurons in vitro using KCl and revealed increased release not only of brain-derived neurotrophic factor (BDNF) but also of transforming growth factor beta (TGFB). Neuronal activity together with BDNF and TGFB controls transcription of DNA modifying enzymes specifically members of the DNA-damage-inducible (Gadd) family, Gadd45a, Gadd45b, and Gadd45g. MeDIP followed by massive parallel sequencing and transcriptome analyses revealed less DNA methylation upon KCl treatment. Psychiatric disorder-related genes, namely Tshz1, Foxn3, Jarid2, Per1, Map3k5, and Arc are transcriptionally activated and demethylated upon neuronal activation. To analyze whether misexpression of Gadd45 family members are associated with psychiatric diseases, we applied unpredictable chronic mild stress (UCMS) as established model for depression to mice. UCMS led to reduced expression of Gadd45 family members. Taken together, our data demonstrate that Gadd45 family members are new putative targets for UCMS treatments.