| First Author | Komenoi S | Year | 2019 |
| Journal | Biochem Biophys Rep | Volume | 19 |
| Pages | 100660 | PubMed ID | 31297456 |
| Mgi Jnum | J:326174 | Mgi Id | MGI:7287931 |
| Doi | 10.1016/j.bbrep.2019.100660 | Citation | Komenoi S, et al. (2019) Microarray analysis of gene expression in the diacylglycerol kinase eta knockout mouse brain. Biochem Biophys Rep 19:100660 |
| abstractText | We have revealed that diacylglycerol kinase eta (DGKeta)-knockout (KO) mice display bipolar disorder (BPD) remedy-sensitive mania-like behaviors. However, the molecular mechanisms causing the mania-like abnormal behaviors remain unclear. In the present study, microarray analysis was performed to determine global changes in gene expression in the DGKeta-KO mouse brain. We found that the DGKeta-KO brain had 43 differentially expressed genes and the following five affected biological pathways: "neuroactive ligand-receptor interaction", "transcription by RNA polymerase II", "cytosolic calcium ion concentration", "Jak-STAT signaling pathway" and "ERK1/2 cascade". Interestingly, mRNA levels of prolactin and growth hormone, which are augmented in BPD patients and model animals, were most strongly increased. Notably, all five biological pathways include at least one gene among prolactin, growth hormone, forkhead box P3, glucagon-like peptide 1 receptor and interleukin 1beta, which were previously implicated in BPD. Consistent with the microarray data, phosphorylated ERK1/2 levels were decreased in the DGKeta-KO brain. Microarray analysis showed that the expression levels of several glycerolipid metabolism-related genes were also changed. Liquid chromatography-mass spectrometry revealed that several polyunsaturated fatty acid (PUFA)-containing phosphatidic acid (PA) molecular species were significantly decreased as a result of DGKeta deficiency, suggesting that the decrease affects PUFA metabolism. Intriguingly, the PUFA-containing lysoPA species were markedly decreased in DGKeta-KO mouse blood. Taken together, our study provides not only key broad knowledge to gain novel insights into the underlying mechanisms for the mania-like behaviors but also information for developing BPD diagnostics. |
