相关实验视频

Updated: Aug 14, 2026

Correlating Gene-specific DNA Methylation Changes with Expression and Transcriptional Activity of Astrocytic KCNJ10 Kir4.1

Correlating Gene-specific DNA Methylation Changes with Expression and Transcriptional Activity of Astrocytic KCNJ10 Kir4.1

Published on: September 26, 2015

甲基化试验在KMT2B相关的 dystonia:一个新的诊断验证工具

Gleyson Francisco da Silva Carvalho¹, Claudio Melo de Gusmão², Beatriz Martins Wolff³

¹Laboratorio de Citogenomica, Departamento de Patologia, Faculdade de Medicina FMUSP, Universidade de Sao Paulo, Sao Paulo, SP, Brazil. gleyson.carvalho@usp.br.

Clinical epigenetics

|November 26, 2024

概括

甲基化分析成功地重新分类了KMT2B基因变异,有助于基因辅导对 dystonia. 这种表观遗传方法有助于确定不确定的意义变异的致病性,改善患者的护理.

科学领域:

遗传学遗传学是一个
表观遗传学在表观遗传学中,表观遗传学是指表观遗传学.
神经学神经学

背景情况:

与KMT2B相关的 dystonia (DYT28) 是一种渐进的,早期发作的运动障碍,具有自体主导遗传.
在KMT2B基因中存在不确定的意义 (VUS) 的变异对诊断和遗传咨询构成挑战.

研究的目的:

通过基因组甲基化和episignature方法学,对两个KMT2B VUS进行功能验证.
评估甲基化概况在诊断KMT2B相关的 dystonia 的实用性.

主要方法:

用外围血液中的EPIC甲基化试验分析了全基因组甲基化状态.
两名KMT2B VUS患者 (p.Leu1720Phe和p.Tyr2515Cys) 的甲基化概况与14名对照人进行了比较.
评估了之前描述的KMT2B特定的甲基化特征 (EpiSign).

主要成果:

这种p.Tyr2515Cys变体显示出与致病变体一致的高甲基化特征,使得重新分类成为可能.
该p.Leu1720Phe变种的甲基化状态与对照组相似,这表明它对DYT28.2不致病.
甲基化分析促进了确的遗传咨询和患者分层对潜在的治疗方法,如深度大脑刺激.

结论:

甲基化状态调查是确定KMT2B VUS的致病性的一种强有力的工具.
表观遗传学分析可以优化遗传咨询,并改善KMT2B相关的 dystonia 的患者管理.

关键词:

在KMT2B中,KMT2B是KMT2B.迪斯托尼亚 (Dystonia) 是一种疾病.一个副签名.甲基化甲基化甲基化这就是VUS VUS VUS.

更多相关视频

Methodology for Accurate Detection of Mitochondrial DNA Methylation

Methodology for Accurate Detection of Mitochondrial DNA Methylation

Published on: May 20, 2018

Continuous Fluorescence-Based Endonuclease-Coupled DNA Methylation Assay to Screen for DNA Methyltransferase Inhibitors

Continuous Fluorescence-Based Endonuclease-Coupled DNA Methylation Assay to Screen for DNA Methyltransferase Inhibitors

Published on: August 5, 2022

相关概念视频

Myasthenia Gravis: Diagnostic Tests

Myasthenia Gravis: Diagnostic Tests

Myasthenia gravis is an autoimmune condition affecting neuromuscular transmission, causing generalized weakness in skeletal muscles. Initial diagnoses rely on patients' signs, symptoms, and medical history. The challenge lies in distinguishing myasthenia from other muscular dystrophies. An important diagnostic feature is the significant improvement of symptoms after administering anticholinesterase inhibitors.
The edrophonium test is a diagnostic tool for myasthenia gravis. It involves...

Alterations in Muscle Tone ll

Alterations in Muscle Tone ll

Alterations in muscle tone are common manifestations of neurological disorders and reflect dysfunction within different nervous system regions. Spasticity, paratonia, and dystonia represent distinct forms of hypertonia, each with unique mechanisms, clinical features, and diagnostic importance.CharacteristicsSpasticity happens from upper motor neuron lesions and is characterized by velocity-dependent resistance to passive movement. Clinical features include:Exaggerated deep tendon reflexesClonus...

Alterations in Muscle Tone lll

Alterations in Muscle Tone lll

Rigidity and myotonia are distinct abnormalities of muscle tone that affect resistance and relaxation during movement. Although both involve altered muscle contraction, they arise from different neurological and muscular mechanisms.CharacteristicsRigidity is characterized by uniform resistance to passive movement across the entire range, independent of speed, affecting flexors and extensors equally. It may appear as lead-pipe rigidity (smooth, constant resistance) or cogwheel rigidity...