自闭症基因Ube3a和发作通过抑制VTACbln1损害了社交能力
Vaishnav Krishnan1, David C Stoppel1,2,3, Yi Nong1,2
1Department of Neurology, Beth Israel Deaconess Medical Center, 330 Brookline Avenue, Boston, Massachusetts 02115, USA.
Nature
|March 16, 2017
概括
母体15q11-13重复增加UBE3A,通过降低Cbln1影响社交能力. 发作加剧了与自闭症相关的缺陷, 通过向VTA谷氨酸神经元来逆转.
科学领域:
- 神经遗传学
- 自闭症谱系障碍研究
- 突触可塑性
背景情况:
- 母亲遗传的15q11-13染色体三倍化是自闭症的常见原因.
- 增加UBE3A基因剂量与这些自闭症病例有关.
- 在转录调节中发挥作用.
研究的目的:
- 研究UBE3A对社交能力和质突触的影响.
- 探索UBE3A,和社会行为之间的相互作用.
- 确定UBE3A相关自闭症的潜在治疗点.
主要方法:
- 在体内小鼠遗传学研究UBE3A剂量效应.
- 评估Cbln1水平和谷氨酸突触功能.
- 研究腹膜区域 (VTA) 质神经元的作用.
- 使用基于病毒载体的化学遗传学进行治疗.
主要成果:
- 增加的核UBE3A降低了对小鼠社交能力至关重要的突触蛋白Cbln1.
- 患有发作的小鼠有高的UBE3A,会加剧社交障碍.
- 这种UBE3A发作相互作用局部化到VTA的质神经元.
- 在VTA神经元中的Cbln1缺失会损害社交能力和谷氨酸的传播.
结论:
- 通过Cbln1降低调节,VTA质神经元中的基因和相互作用会损害社交能力.
- UBE3A和通过Cbln1协同影响社会行为.
- 针对VTA质神经元和Cbln1显示出与自闭症相关的社会缺陷的治疗潜力.
相关概念视频
01:20Antiepileptic Drugs: Modulators of Neurotransmitter Release Mediated by SV2A Protein
1.0K
Antiepileptic drugs, such as levetiracetam (Keppra) and brivaracetam (Briviact), have emerged as crucial tools in managing epilepsy. These medications exert their therapeutic effects by targeting the synaptic vesicle protein SV2A, a transmembrane glycoprotein primarily found in the brain.
SV2A is a transmembrane glycoprotein located predominantly in the brain, modulating the release of neurotransmitters for neuronal communication. Both levetiracetam and brivaracetam exhibit a high affinity for...
SV2A is a transmembrane glycoprotein located predominantly in the brain, modulating the release of neurotransmitters for neuronal communication. Both levetiracetam and brivaracetam exhibit a high affinity for...
1.0K
01:19Autism Spectrum Disorder
1.4K
Autism spectrum disorder (ASD) is a neurodevelopmental condition marked by persistent deficits in social communication and interaction alongside restrictive and repetitive behaviors or interests. ASD is sometimes accompanied by intellectual impairment.
These core symptoms manifest differently among individuals, ranging from mild to severe. The disorder's complexity extends beyond its clinical presentation, encompassing a diverse range of biological, cognitive, and sociocultural influences.
These core symptoms manifest differently among individuals, ranging from mild to severe. The disorder's complexity extends beyond its clinical presentation, encompassing a diverse range of biological, cognitive, and sociocultural influences.
1.4K
01:24Epilepsy and Seizures: Overview
1.5K
Epilepsy is a chronic neurological disease marked by recurrent, unpredictable seizures. These seizures are caused by abnormal electrical discharges in the brain, leading to behavior, sensation, or consciousness alterations. They can also cause transient impairment of awareness, interfering with daily activities.
Various factors can trigger epilepsy, including genetic factors, brain damage, metabolic causes, and unknown etiology. Diagnosis of epilepsy involves electroencephalography (EEG), which...
Various factors can trigger epilepsy, including genetic factors, brain damage, metabolic causes, and unknown etiology. Diagnosis of epilepsy involves electroencephalography (EEG), which...
1.5K
01:28Social Anxiety Disorder
652
Social anxiety disorder, also known as social phobia, is characterized by an intense fear of social situations where one might face humiliation, rejection, embarrassment, or negative evaluation. This disorder leads individuals to avoid activities like casual conversations, public speaking, or seemingly simple tasks such as eating, signing documents, or swimming, in public settings. Its impact extends beyond discomfort, often significantly interfering with daily functioning and quality of life.
652
01:31Neurotransmitters
3.0K
Neurotransmitters are essential chemical messengers within the nervous system, facilitating the communication between neurons. These chemical messengers, varying in function and effect, are critical for sustaining various aspects of neurological health and emotional well-being.
3.0K