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Transcriptome Analysis of Human Induced Excitatory Neurons Supports a Strong Effect of Clozapine on Cholesterol Biosynthesis

ABSTRACT: Transcriptome Analysis of Human Induced Excitatory Neurons Supports a Strong Effect of Clozapine on Cholesterol Biosynthesis

PROVIDER: PRJNA685129 | ENA |

REPOSITORIES: ENA

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Transcriptome Analysis of Human Induced Excitatory Neurons Supports a Strong Effect of Clozapine on Cholesterol Biosynthesis

Project description:Antipsychotics are known to modulate dopamine and other neurotransmitters which is often thought to be the mechanism underlying their therapeutic effects. Nevertheless, other less studied consequences of antipsychotics on neuronal function may contribute to their efficacy. Revealing the complete picture behind their action is of paramount importance for precision medicine and accurate drug selection. Progress in cell engineering allows the generation of induced pluripotent stem cells (iPSCs) and their differentiation to a variety of neuronal types, providing new tools to study antipsychotics. Here we use excitatory cortical neurons derived from iPSCs to explore their response to therapeutic levels of Clozapine as measured by their transcriptomic output, a proxy for neuronal homeostasis. To our surprise, but in agreement with the results of many investigators studying glial-like cells, Clozapine had a very strong effect on cholesterol metabolism. More than a quarter (12) of all annotated cholesterol genes (46) in the genome were significantly changed at FDR<0.1, all upregulated. This is a 35-fold enrichment with an adjusted p = 8 x10-11. Notably no other functional category showed evidence of enrichment. Cholesterol is a major component of the neuronal membrane and myelin but it does not cross the blood brain barrier, it is produced locally mostly by glia but also by neurons. By singling out increased expression of cholesterol metabolism genes as the main response of cortical excitatory neurons to antipsychotics, our work supports the hypothesis that cholesterol metabolism may be a contributing mechanism to the beneficial effects of Clozapine and possibly other antipsychotics.

2021-02-11 | GSE163161 | GEO

Transcriptome analysis of human induced excitatory neurons supports a strong effect of clozapine on cholesterol biosynthesis.

Project description: Not available

| S-EPMC7987755 | biostudies-literature

Differential methylation in patients treated with clozapine

Project description:Genome-wide DNA methylation profile of peripheral blood leukocyte samples taken from patients under clozapine treatment. The Infinium MethylationEPIC BeadChip was analyzed to obtain DNA methylation profiles in samples from 31 patients with psychotic disorders under treatment with clozapine and 56 patients with psychiatric disorders naïve to psychopharmacological treatment

2022-02-24 | GSE197136 | GEO

Transcription profiling of mouse brain treated with clozapine and haloperidol

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

Transcription profiling of mouse brain after twelve week treatment with the antipsychotics Clozapine and Haloperidol

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

Twelve weeks expression data of the antipsychotics Clozapine and Haloperidol in the mouse brain (Affymetrix, GCRMA).

2006-12-13 | GSE6467 | GEO

Four weeks expression data of the antipsychotics Clozapine and Haloperidol in the mouse brain (Affymetrix, GCRMA).

2006-12-13 | GSE6511 | GEO

Integrative genomic strategies applied to a lymphoblast cell line model reveal specific transcriptomic signatures associated with clozapine response [methylation]

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

Transcription profiling of mouse brain from animals treated for 4 weeks with the antipsychotics Clozapine and Haloperidol

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

Integrative genomic strategies applied to a lymphoblast cell line model reveal specific transcriptomic signatures associated with clozapine response [expression]

Project description:In vitro genomic analyses of clozapine response. Genome wide gene expression profiling was performed across several experimental conditions of clozapine exposure. LCLs were exposed for 24 hours to 1x, 10x, 50x and 100x clinical concentration (2μM, 20μM,100μM,200 μM clozapine) and vehicle (DMSO); each concentration was measured in 4 cell lines.

2020-10-01 | GSE158819 | GEO

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