Differential methylation in patients treated with clozapine
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ABSTRACT:
ORGANISM(S): Homo sapiens
PROVIDER: GSE197136 | GEO | 2022/02/24
REPOSITORIES: GEO
Similar Datasets
Project description:Differential methylation in patients treated with clozapine
| PRJNA809081 | ENA
Project description:Clozapine is an atypical antipsychotic drug used to treat treatment-resistant schizophrenia. Its side effects, including liver enzyme abnormalities, experienced by many patients preclude its more common use as a first-line therapy for schizophrenia. Toxicoproteomic approaches have been demonstrated to effectively guide the identification of toxicological mechanisms. Here, to further our understanding of the molecular effects of clozapine, we performed a data-independent acquisition (DIA)-based quantitative proteomics investigation of clozapine-treated human liver spheroid cultures. In total, we quantified 4,479 proteins across the five treatment groups (vehicle; 15 µM, 30 µM, and 60 µM clozapine; and 10 ng/mL TNFα + IL-1β). Clozapine (60 µM) treatment yielded 36 differentially expressed proteins (FDR < 0.05). Gene-set enrichment analysis indicated perturbation of several gene sets, including interferon gamma signaling (e.g., interferon gamma receptor 1) and prominent autophagy-related processes (e.g., upregulation of sequestosome-1 (SQSTM1), MAP1LC3B/LC3B2, GABARAPL2, and nuclear receptor coactivator 4). The effects of clozapine on autophagy were confirmed by targeted mass spectrometry and western blotting using conventional SQSTM1 and LC3B markers. Combined with prior literature, our work suggests a broad contribution of autophagy to both the therapeutic and side effects of clozapine. Overall, this study demonstrates how proteomics can contribute to the elucidation of physiological and toxicological mechanisms of drugs.
2022-12-13 | PXD038007 | Pride
Project description:in vitro genomic analyses of clozapine response. Genome wide DNA methylation profiling was performed across several experimental conditions of clozapine exposure. LCLs were exposed to different concentrations of clozapine (vehicle (DMSO), 1x, 20x, 40x and 60 times clinical concentration) and exposure times were 24h and 96h.
2020-09-30 | GSE158716 | GEO
Project description:Clozapine is an atypical antipsychotic drug for treatment-resistant schizophrenia. Its side effects, including liver enzyme abnormalities, experienced by many patients preclude a more common use as a first-line therapy of schizophrenia. Toxicoproteomics approaches have been demonstrated to effectively guide the identification of toxicological mechanisms. Here, to further our understanding of Clozapine's molecular effects we performed a Data-independent Acquisition (DIA)-based quantitative proteomics investigation of Clozapine-treated human liver spheroid cultures. In total, we quantified 4,479 proteins across five treatment groups (vehicle, 15 µM, 30 µM, 60 µM Clozapine, and 10 ng/mL TNFa + IL-1a). 60 µM Clozapine treatment yielded 36 differentially expressed proteins (fdr < 0.05). Gene-set enrichment analysis indicated perturbation of several gene-sets, which included interferon gamma signaling (e.g., IFNGR1) and prominently autophagy related processes (e.g., upregulation of SQSTM1, MAP1LC3B/LC3B2, GABARAPL2, and NCOA4). Clozapine's effects on autophagy were confirmed using conventional SQSTM1 and LC3B markers by targeted mass-spectrometry and Western Blot.
2022-12-09 | PXD034257 | Pride
Project description:Atypical antipsychotic Clozapine has a superior antipsychotic and antimanic effects compared to other antisphicotics. Its widespread use was limited by the side effects of agranulocytosis, cardiomyopathy and metabolic anomalies such as weight gain, and diabetes. Very little is known about mechanisms by which Clozapine works. The aim of this experiment is to compare the chronic gene expression profile of the atypical antipsychotic Clozapine to the typical antipsychotic drug Haloperidol using gene expression Microarray in order to understand the intercellular mechanism behind the therapeutic and the toxic effects of Clozapine. Experiment Overall Design: The study was designed to compare the chronic therapeutic and toxic expression profile of Clozapine to Haloperidol in the mouse brain. All experiments were performed in male C57BL mice at four weeks of age (Biological services, University Collage London). Several theoretical and practical considerations influenced the final experimental design. To avoid the effect of injections on genes expression and to simulate the clinical scenario in human, both drugs were applied to the animals drinking water using the maximum human therapeutic dose (i.e. 1.6mg/kg/day for Haloperidol and 12mg/kg/day for Clozapine). Thirty animals were divided equally between three treatment groups and received either Haloperidol (10 animals), Clozapine (10 animals) or no treatment (10 animals) for 12 weeks. After twelve weeks, the total RNA from the right forebrains were extracted and hybridized to the Affymetrix MOE430A array. In all the Microarray experiments we have avoided pooling and each RNA sample was an independent biological replicate. The total numbers of used arrays were 30 Affymetrix MOE430A arrays.
2009-02-07 | E-GEOD-6467 | biostudies-arrayexpress
Project description:Atypical antipsychotic Clozapine has a superior antipsychotic and antimanic effects compared to other antisphicotics. Its widespread use was limited by the side effects of agranulocytosis, cardiomyopathy and metabolic anomalies such as weight gain, and diabetes. Very little is known about mechanisms by which Clozapine works. The aim of this experiment is to compare the chronic gene expression profile (i.e four weeks) of the atypical antipsychotic Clozapine to the typical antipsychotic drug Haloperidol using gene expression Microarray in order to understand the intercellular mechanism behind the therapeutic and the toxic effects of Clozapine. Experiment Overall Design: The study was designed to compare the chronic therapeutic and toxic expression profile of Clozapine to Haloperidol in the mouse brain. All experiments were performed in male C57BL mice at four weeks of age (Biological services, University Collage London). Several theoretical and practical considerations influenced the final experimental design. To avoid the effect of injections on genesâ expression and to simulate the clinical scenario in human, both drugs were applied to the animalsâ drinking water using the maximum human therapeutic dose (i.e.1.6mg/kg/day for Haloperidol and 12mg/kg/day for Clozapine).Thirty animals were divided equally between three treatment groups and received either Haloperidol (10 animals), Clozapine (10 animals) or no treatment (10 animals) for 4 weeks. After four weeks,the plasma drug level for both drugs was assesed by Tandem mass Spectrometry LC- MS/MS. The total RNA from the right forebrains of nine selected animals (three from each treatment group) were extracted and hybridized to the Affymetrix U74Av2. In all the Microarray experiments we have avoided pooling and each RNA sample was an independent biological replicate. The total numbers of used arrays were 9 Affymetrix U74Av2.
2009-04-30 | E-GEOD-6511 | biostudies-arrayexpress
Project description:Although antipsychotics are routinely used in the treatment of schizophrenia for last decades, their precise mechanism of action is still unclear. In this study we investigated changes in PC12 cells’ proteome under the influence of clozapine, risperidone and haloperidol to identify protein pathways regulated by the antipsychotics. Analysis of the protein profiles in two time points: after 12 and 24 h of incubation with drugs revealed significant alterations in 510 proteins. Further canonical pathway analysis determined signal transduction pathways and biological processes regulatednby drug treatment. Interestingly, all tested drugs have caused changes in PC12 proteome which correspond to inhibition of cytokines: tumor necrosis factor (TNF) and transforming growth factor beta 1 (TGF-β1), what can be linked to the immunological and viral hypothesis of schizophrenia. We found, that the 12-hour incubation with clozapine caused up-regulation of protein kinase A signalling and translation machinery. After 24 h of treatment with clozapine, the inhibition of the actin cytoskeleton signalling and Rho proteins signalling was revealed. Obtained results suggests that mammalian target of rapamycin complex 1 (mTORC1) and 2 (mTORC2) play a central role in the signal transduction of clozapine.
2021-09-08 | PXD014422 | Pride
Project description:This SuperSeries is composed of the following subset Series:; GSE6467: Twelve weeks expression data of the antipsychotics Clozapine and Haloperidol in the mouse brain (Affymetrix, GCRMA). GSE6511: Four weeks expression data of the antipsychotics Clozapine and Haloperidol in the mouse brain (Affymetrix, GCRMA). Experiment Overall Design: Refer to individual Series
2008-06-14 | E-GEOD-6512 | biostudies-arrayexpress
Project description:Antipsychotic drugs (APs) are used to treat psychiatric disorders but also have the prominent side effect of weight gain resulting in a higher incidence of metabolic disease in this patient group. While the majority of patients gain significant weight in response to APs some patients are relatively resistant to these effects. APs such as clozapine and olanzapine are deemed to be highly efficacious at treating psychiatric conditions yet they have some of the highest weight gain liabilities. Therefore, there is a need to determine which patients are less susceptible to the metabolic side effects of APs and would be good candidates for drugs such as olanzapine, and conversely, identifying patients that should be prescribed alternative APs with less weight gain liabilities.
2021-01-01 | GSE157438 | GEO
Project description:Atypical antipsychotic Clozapine has a superior antipsychotic and antimanic effects compared to other antisphicotics. Its widespread use was limited by the side effects of agranulocytosis, cardiomyopathy and metabolic anomalies such as weight gain, and diabetes. Very little is known about mechanisms by which Clozapine works. The aim of this experiment is to compare the chronic gene expression profile (i.e four weeks) of the atypical antipsychotic Clozapine to the typical antipsychotic drug Haloperidol using gene expression Microarray in order to understand the intercellular mechanism behind the therapeutic and the toxic effects of Clozapine. Keywords: drug response
2006-12-13 | GSE6511 | GEO