An evaluation of polymorphisms in casein kinase 1 delta and epsilon genes in major psychiatric disorders
NEUROSCIENCE LETTERS
Authors: Matsunaga, Shinji; Ikeda, Masashi; Kishi, Taro; Fukuo, Yasuhisa; Aleksic, Branko; Yoshimura, Reiji; Okochi, Tomo; Yamanouchi, Yoshio; Kinoshita, Yoko; Kawashima, Kunihiro; Umene-Nakano, Wakako; Inada, Toshiya; Kunugi, Hiroshi; Kato, Tadafumi; Yoshikawa, Takeo; Ujike, Hiroshi; Nakamura, Jun; Ozaki, Norio; Kitajima, Tsuyoshi; Iwata, Nakao
Abstract
Disturbances of the circadian rhythm are involved in the pathophysiology of bipolar disorder (BD), schizophrenia (SCZ) and major depressive disorder (MDD). Specifically, because clock gene dysfunction is good candidate for enhancing the susceptibility to these psychiatric disorders, we selected two circadian rhythm-related genes (CSNK1D and CSNK1E) and investigated genetic associations of the genes with these three disorders. None of the SNPs showed a significant association with MDD, but a SNP (rs2075984) in CSNK1E and SNP (rs6502097) in CSNK1D were associated with SCZ (P=0.0091. uncorrected) and BD (P=0.030, uncorrected), respectively. To confirm these findings, we analyzed an independent dataset (maximum N=3815) but found a lack of association (P=0.63 for rs2075984 and P=0.61 for rs6502097). The final meta-analysis showed no association between these SNPs with SCZ (P=0.21) and BD (P=0.53). These results do not support that genetic variation in CSNK1D and CSNK1E is a susceptibility factor for major psychiatric disorders in the Japanese population. (C) 2012 Elsevier Ireland Ltd. All rights reserved.
Genomewide Histone H3 Lysine 9 Acetylation Profiling in CD4+T Cells Revealed Endoplasmic Reticulum Stress Deficiency in Patients with Acute-on-chronic Liver Failure
SCANDINAVIAN JOURNAL OF IMMUNOLOGY
Authors: Jin, L.; Wang, K.; Liu, H.; Chen, T.; Yang, Y.; Ma, X.; Wang, J.; Li, Y.; Du, D.; Zhao, Y.; He, Y.
Abstract
Acute-on-chronic liver failure (ACLF) displayed sepsis-like' immune paralysis. Little is known about the role of CD4+ T lymphocytes, the primary regulator of innate and adopted immune system, played in ACLF. Acetylation of histone H3 lysine 9 (H3K9ac), a key epigenetic modification, tightly controls gene transcription. Whether and how does H3K9ac modification regulate CD4+ T cells in ACLF remains unclear. PBMCs were isolated from patients with ACLF, immune tolerance of chronic hepatitis B (CHB-T) and immune active of chronic hepatitis B (CHB-A). Then, CD4+ T lymphocytes were purified by magnetic microbeads, and the purity was confirmed by flow cytometry. H3K9ac variations were analysed in CD4+ T cells using chromatin immunoprecipitation microarray and then confirmed by quantitative PCR. Whole-genome H3K9 acetylation analyses were conducted by bioinformatics. A total of 70 genes were differently modified in H3K9ac between CHB-A and ACLF groups, while 44 genes were differently modified in H3K9ac between CHB-T and ACLF groups. Clustering algorithm analysis showed patients with ACLF displayed sepsis-like' immune paralysis. Functional analysis showed endoplasmic reticulum (ER) stress, or downstream pathway-related genes, such as BIP, ATF4, PER1, CSNK1D, IRF3, BNIP1, AKT1 and UBC, were differentially modified in ACLF. We profiled H3K9 acetyl modification in CD4+ T lymphocytes from HBV-infected patients with three different immune states, that is ACLF, immune tolerance and immune active phases. ACLF displayed sepsis-like' immune paralysis. ER stress in CD4+ T lymphocytes attributed to ACLF. This study provides some useful clues for revealing the mechanisms underlying ACLF.