Related Experiment Video
Updated: May 22, 2025
05:51
A Strategy to Identify de Novo Mutations in Common Disorders such as Autism and Schizophrenia
Published on: June 15, 2011
25.7K
Mendelian Randomization Reveals Causalities Between DNA Methylation and Schizophrenia
Danni Wang1, Danyang Li2, Xinglun Dang1
1State Key Laboratory of Digital Medical Engineering, Department of Psychiatry and Psychosomatics, Zhongda Hospital, School of Medicine, Advanced Institute for Life and Health, Jiangsu Provincial Key Laboratory of Brain Science and Medicine, School of Life Science and Technology, Southeast University, Nanjing, Jiangsu, China.
Biological Psychiatry
|March 29, 2025
Summary
This study used Mendelian randomization to find causal links between DNA methylation and schizophrenia (SCZ). Key methylation sites and genes were identified, highlighting epigenetics
Area of Science:
- Neuroscience
- Genetics
- Psychiatry
Background:
- Epigenetic factors, including DNA methylation, are linked to schizophrenia (SCZ).
- The causal relationship between epigenetic modifications and SCZ pathogenesis is not well understood.
Purpose of the Study:
- To investigate the causal relationships between DNA methylation and SCZ using Mendelian randomization.
- To identify specific epigenetic factors and genes causally associated with SCZ risk.
Main Methods:
- Utilized Mendelian randomization (MR) analysis.
- Employed brain and blood methylation quantitative trait loci (mQTL) data as exposures.
- Used large-scale genome-wide association study data for SCZ as the outcome.
Main Results:
- Identified 172 brain and 157 blood methylation sites causally associated with SCZ.
- Found 36 overlapping genes between brain and blood methylation sites, with 3 showing consistent effects.
- Prioritized 15 genes where both epigenetic modification and expression are causally linked to SCZ risk.
Conclusions:
- Confirmed causal associations between specific DNA methylation levels and SCZ.
- Demonstrated the significant role of epigenetic factors in the development of SCZ.
- Highlighted crucial risk genes involved in both epigenetic regulation and expression contributing to SCZ.
More Related Videos
Related Concept Videos
01:29Biological Causes of Schizophrenia
29
Schizophrenia, a severe psychiatric disorder, arises from a complex interplay of biological factors, including genetic predisposition, structural brain abnormalities, neurotransmitter dysregulation, and developmental irregularities. These factors collectively contribute to the onset and progression of the disorder, which typically manifests in late adolescence or early adulthood.
Genetic Factors in Schizophrenia
The genetic basis of schizophrenia is strongly supported by family and twin...
Genetic Factors in Schizophrenia
The genetic basis of schizophrenia is strongly supported by family and twin...
29
01:37Epigenetic Regulation
3.0K
Epigenetic changes alter the physical structure of the DNA without changing the genetic sequence and often regulate whether genes are turned on or off. This regulation ensures that each cell produces only proteins necessary for its function. For example, proteins that promote bone growth are not produced in muscle cells. Epigenetic mechanisms play an essential role in healthy development. Conversely, precisely regulated epigenetic mechanisms are disrupted in diseases like cancer.
X-chromosome...
X-chromosome...
3.0K
01:27Psychosis: Pathophysiology of Schizophrenia and Other Psychotic Disorders
342
Schizophrenia is a neurodevelopmental disorder whose origins are rooted in complex genetic components. Despite our burgeoning understanding, the pathophysiology of this disorder remains incompletely deciphered.
Researchers have identified genetic factors that increase susceptibility to schizophrenia, underscoring the intricate interplay between genetics and environment in disease development. At the core of schizophrenia's pathophysiology is excessive dopaminergic neurotransmission within...
Researchers have identified genetic factors that increase susceptibility to schizophrenia, underscoring the intricate interplay between genetics and environment in disease development. At the core of schizophrenia's pathophysiology is excessive dopaminergic neurotransmission within...
342
01:29Psychological and Sociocultural Causes of Schizophrenia
42
Schizophrenia, a complex psychiatric disorder, has been historically misunderstood. Early psychological theories attributed its origins to childhood trauma and unresponsive parenting. However, contemporary research largely rejects these notions, favoring the vulnerability-stress hypothesis. This model proposes that individuals with a genetic predisposition to schizophrenia may develop the disorder following exposure to significant environmental stressors. Notably, studies on high-risk...
42
01:28Human Genetics
510
Human genetics provides a profound framework for understanding the interplay between genetic predispositions and human psychology. At the heart of this discipline lies the study of how genes influence physical traits, behaviors, and susceptibility to diseases. Each person carries a unique genetic code that subtly or significantly shapes their psychological and behavioral landscape.
The complex relationship between genetics and psychology is observable through common biological components such...
The complex relationship between genetics and psychology is observable through common biological components such...
510
02:30Genomic Imprinting and Inheritance
33.1K
Diploid organisms inherit genetic material through chromosomes from both parents. Copies of the same gene are known as alleles. In most cases, both alleles are simultaneously expressed and allow various cellular processes to function optimally. If one of the alleles is missing or mutated, the expression of the other allele can compensate; however, this is not true for all genes.
The expression of some genes depends on which parent passed the gene to the offspring, through a phenomenon known as...
The expression of some genes depends on which parent passed the gene to the offspring, through a phenomenon known as...
33.1K