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RNA-sequencing data and whole transcriptome analysis from CDH2 knock-in mice, modeling attention-deficit hyperactivity disorder (ADHD)

ABSTRACT: RNA-sequencing data and whole transcriptome analysis from CDH2 knock-in mice, modeling attention-deficit hyperactivity disorder (ADHD)

PROVIDER: PRJNA757439 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR15600160.fastq.gz	Fastqsanger.gz
	SRR15600161.fastq.gz	Fastqsanger.gz
	SRR15600162.fastq.gz	Fastqsanger.gz
	SRR15600163.fastq.gz	Fastqsanger.gz
	SRR15600164.fastq.gz	Fastqsanger.gz

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Effect of methylphenidate on gene expression profiles of Attention Deficit Hyperactivity Disorder patients and unaffected controls.

Project description:Attention deficit hyperactivity disorder (ADHD) is a common psychiatric condition of children with a prevalence of 5-10% worldwide. Up to 30% of adults with a history of childhood ADHD maintain symptoms in later life; these adult ADHD patients are severely impaired in social and professional life due to persistence of ADHD core symptoms like impulsivity, attention deficit and hyperactivity as well as frequently observed co-morbidities like alcohol and drug abuse, major depression, bipolar and personality disorders. Pharmaceutical treatment options include methylphenidate (MPH), which is amongst others an inhibitor of the dopamine transporter and therefore increases dopamine levels in the brain. However, not all ADHD patients are MPH responders with clinical features to distinguish responders and non-responders being not at hand so far. Likewise, neurobiological reasons for drug response are still elusive. Here, we examined the global transcriptional response of MPH on lymphoblastoid cell lines (LCLs) derived from ADHD patients and unaffected controls.

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Effect of methylphenidate on gene expression profiles of Attention Deficit Hyperactivity Disorder patients and unaffected controls.

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Association of epigenetic differences nominated by monozygotic twins discordant for attention-deficit hyperactivity disorder with their brain structures

Project description:The present study examined the relationship between genome-wide methylation differences and variations in brain structures involved in the development of attention-deficit hyperactivity disorder (ADHD). We used monozygotic twins discordant for ADHD to identify candidate DNA methylation sites involved in the development of ADHD. Two pairs of MZ twins discordant for ADHD were recruited from the Department of Child and Adolescent Psychological Medicine at the University of Fukui Hospital. The twins were 9-year-old males (pair 1) and 16-year-old females (pair 2). Genomic DNA was collected from saliva samples, and the DNA was then whole-genome amplified, fragmented, and hybridized to the Human MethylationEPIC BeadChip.

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RNA-sequencing data and whole transcriptome analysis from CDH2 knock-in mice, modeling attention-deficit hyperactivity disorder (ADHD)

Project description:Here we demonstrate familial ADHD caused by a missense mutation in CDH2, which encodes the adhesion protein N-cadherin, known to play a significant role in synaptogenesis; In line with the human phenotype, CRISPR/Cas9-mutated knock-in mice harboring the human p.H150Y mutation in the mouse ortholog recapitulated core behavioral features of hyperactivity. Symptoms were modified by methylphenidate, the most commonly prescribed therapeutic for ADHD. The mutated mice exhibited impaired presynaptic vesicle clustering, attenuated evoked transmitter release and decreased spontaneous release. Specific downstream molecular pathways were affected in both the ventral midbrain and prefrontal cortex, with reduced tyrosine hydroxylase expression and dopamine levels. We thus delineate roles for CDH2-related pathways in the pathophysiology of ADHD.

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Project description:Inattention, impulsivity and hyperactivity are the primary behaviors associated with Attention Deficit / Hyperactivity Disorder (ADHD). Previous studies proved that peripheral blood gene expression signature could mirror central nervous system disease. This study determined if gene expression in blood correlated with inattention, hyperactivity/impulsivity rating scales and/or both in subjects with Tourette syndrome (TS).

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Project description:We found RNA markers common to both the discordant twin study and case-controlled subjects further narrowed the putative targets, some of which had been previously associated with ADHD at the DNA level. The potential role of several differentially expressed genes, including ABCB5, RGS2, GAK, GIT1 and 3 members of the galactose metabolism pathway (GALE, GALT, GALK1) are substantiated by prior associations to ADHD and by established mechanistic connections to molecular pathways relevant to ADHD and behavioral control.

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Association of epigenetic differences nominated by monozygotic twins discordant for attention-deficit hyperactivity disorder with their brain structures

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Project description:Despite the predominance and high heritability of Attention-Deficit/Hyperactivity Disorder (ADHD), its etiology remains elusive. Preclinical and clinical evidence partly points to impaired limbic system function, particularly that of the hippocampus (HPC). Children diagnosed with ADHD often struggle with deficits in executive function, temporal processing, and visuospatial memory, the defining hallmarks of the predominantly inattentive presentation (ADHD-PI), thought to be subserved by the HPC brain region. However, the specific genes/proteins involved and how they shape the hippocampal makeup to influence ADHD behavior are poorly understood. As an exploratory tool, hippocampal tissues from a mouse model overexpressing thyroid hormone-responsive protein (THRSP), with defining characteristics of ADHD-PI presentation, were utilized for proteomic analyses. Results revealed differential expressions of proteins involved in Wnt signaling. Compared to THRSP knockout (KO), THRSP OE mice have impaired attention and memory concomitant to dysregulated Wnt signaling affecting hippocampal cell proliferation (BrdU) and neurogenic markers expressions (i.e., NEU-N, GFAP), markers of neural stem cell (NSC) activity. Also, exposure to a combination of enriched environment and treadmill exercise improves behavioral deficits in THRSP OE mice and improves Wnt signaling and NSC activity.

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