相关实验视频

Updated: Sep 16, 2025

Characterizing RNA Modifications in Single Neurons Using Mass Spectrometry

Characterizing RNA Modifications in Single Neurons Using Mass Spectrometry

Published on: April 21, 2022

M⁶ARNA表转录组动态与主要抑郁症和自杀风险相关

Bhaskar Roy¹, Yogesh Dwivedi²

¹Department of Psychiatry and Behavioral Neurobiology, Heersink School of Medicine, University of Alabama at Birmingham, Birmingham, AL, USA.

Neuropsychopharmacology : official publication of the American College of Neuropsychopharmacology

|July 10, 2025

概括

在主要抑郁症 (MDD) 和自杀风险中,N6-甲基氨酸 (m6A) RNA甲基化模式发生变化. 这项研究揭示了m6AA.

科学领域:

神经科学和分子生物学
遗传学和表观遗传学

背景情况:

重度抑郁症 (MDD) 是全球导致残疾的主要原因,与自杀的显著风险有关.
严重抑郁症和自杀的潜在分子机制仍然不太清楚,这阻碍了有效治疗的发展.
N6-甲基氨酸 (m6A) RNA甲基化是一种普遍的表皮转录组修饰,涉及各种生物过程.

研究的目的:

研究m6ARNA甲基化在MDD病变发生过程中的作用.
探索m6A甲基化模式与MDD患者自杀风险之间的关联.
为了确定特定的m6A修饰和相关的分子途径,涉及到MDD和自杀.

主要方法:

在MDD受试者和对照者的背侧前额皮质 (dlPFC) 中对m6ARNA甲基化的高通量微阵列分析.
在分析以确定m6A基因并分析全染色体甲基化模式.
对关键m6A调节酶 (FTO和METTL3) 的基因表达分析.
具有或没有自杀史的MDD患者之间的甲基化概况的比较.

主要成果:

在MDD受试者中观察到m6A甲基化的显著变化,发现了许多高甲基化和低甲基化转录.
特定的m6A基因 (AAGA,ACCCA) 在MDD组中得到了丰富.
在MDD中检测到FTO脱甲基酶减少和METTL3甲基转移酶水平增加.
大多数超甲基化基因与其表达水平呈反相关性.
在MDD患者中发现了明显的m6A甲基化模式和相关的分子途径,MDD患者具有自杀行为.

结论:

m6ARNA甲基化在MDD的分子病理学中起着至关重要的作用.
异常的m6A模式与MDD患者的自杀风险增加有关.
准m6A通路可能为MDD和自杀预防提供新的治疗策略.

更多相关视频

Exploring m6A and m5C Epitranscriptomes upon Viral Infection: an Example with HIV

Exploring m6A and m5C Epitranscriptomes upon Viral Infection: an Example with HIV

Published on: March 5, 2022

A Method for Measuring RNA N6-methyladenosine Modifications in Cells and Tissues

A Method for Measuring RNA N6-methyladenosine Modifications in Cells and Tissues

Published on: December 5, 2016

相关概念视频

RNA Stability

RNA Stability

Intact DNA strands can be found in fossils, while scientists sometimes struggle to keep RNA intact under laboratory conditions. The structural variations between RNA and DNA underlie the differences in their stability and longevity. Because DNA is double-stranded, it is inherently more stable. The single-stranded structure of RNA is less stable but also more flexible and can form weak internal bonds. Additionally, most RNAs in the cell are relatively short, while DNA can be up to 250 million...

mRNA Stability and Gene Expression

mRNA Stability and Gene Expression

The structure and stability of mRNA molecules regulates gene expression, as mRNAs are a key step in the pathway from gene to protein. In eukaryotes, the half-life of mRNA varies from a few minutes up to several days. mRNA stability is essential in growth and development. The absence of the proteins regulating its stability, such as tristetraprolin in mice, can cause systemic issues, including bone marrow overgrowth, inflammation, and autoimmunity.
Cis-acting Elements involved in mRNA stability

Human Genetics

Human Genetics

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...

Depressive Disorders: Etiology

Depressive Disorders: Etiology

Depressive disorders result from a complex interplay of biological, psychological, and sociocultural factors, each contributing uniquely to the development and persistence of the condition. Understanding these factors provides critical insight into the multifaceted nature of depression.
Biological Factors in Depression
Biological predispositions significantly influence the risk of developing depressive disorders. Genetic studies highlight the role of variations in the serotonin transporter...

Nuclear Export of mRNA

Nuclear Export of mRNA

Before mRNAs are exported to the cytoplasm, it is crucial to check each mRNA for structural and functional integrity. Eukaryotic cells use several different mechanisms, collectively known as mRNA surveillance, to look for irregularities in mRNAs. Irregular or aberrant mRNA are rapidly degraded by various enzymes. If a defective mRNA escapes the surveillance, it would be translated into a protein which would either be non-functional or not function properly. One of the primary irregularities in...

Depressive Disorders: MDD and Dysthymia

Depressive Disorders: MDD and Dysthymia

Depressive disorders are a group of mental health conditions characterized by pervasive feelings of sadness, diminished pleasure in life, and a significant impact on daily functioning. These conditions are most prevalent in individuals during their 30s and affect women at twice the rate of men. Contrary to popular belief, younger individuals are generally more susceptible to these disorders than older adults. Two key types of depressive disorders include Major Depressive Disorder (MDD) and...