相关实验视频

Updated: Jan 12, 2026

Author Spotlight: Decoding Mitochondrial Aging

Author Spotlight: Decoding Mitochondrial Aging

Published on: June 30, 2023

线粒体功能障碍和氧化应激防御功能受损是脑X链 adrenoleukodystrophy 的潜在触发因素

L M Marten¹, M S Lüttgens¹, B Berečić²

¹Department of Pediatrics and Adolescent Medicine, University Medical Center Göttingen, Robert-Koch-Str. 40, 37075 Göttingen, Germany.

Free radical biology & medicine

|November 2, 2025

概括

与X相关的 adrenoleukodystrophy (X-ALD) 研究显示,非CALD细胞的基本氧化状态受损,但比CALD细胞更好的应激防御. 这突出了X-ALD表型中不同的代谢应对机制.

科学领域:

生物化学生物化学
细胞生物学细胞生物学
遗传学遗传学是一个

背景情况:

与X相关的上腺核衰竭 (X-ALD) 由ABCD1变体引起,影响非常长链脂肪酸 (VLCFA) 的β-氧化.
病理生理学涉及氧化应激和线粒体功能障碍,但它们在不同X-ALD表型中的作用尚不清楚.

研究的目的:

研究儿童大脑ALD (CALD) 和非CALD患者纤维细胞中VLCFA,线粒体功能和氧化应激的相互作用.
为了比较不同X-ALD表型之间的应激反应和防御机制.

主要方法:

测量了反应性氧物种 (ROS) 和线粒体氧气消耗率 (OCR).
通过qPCR评估NRF2依赖基因表达.
利用显微镜来评估线粒体结构和氧体-线粒体交叉声.
使用三丁氧化 (TBHP) 和六可酸 (C26:0) 诱导的压力.

主要成果:

与CALD和健康对照相比,非CALD细胞显示基底OCR和NRF2基因表达减少.
在基底条件下,非CALD和CALD细胞中的ROS水平相似.
非CALD细胞在受到额外的压力时表现出优越的防御和补偿机制.

结论:

X-ALD表型对氧化应激有明显的反应,而非CALD细胞尽管基础代谢受损,但仍表现出弹性.
这些发现提高了对X-ALD代谢变化的理解,并为生物标志物和治疗开发提供了信息.

关键词:

在ABCD1中,ABCD1是ABCD1.线粒体动力学的动态这就是NRF2的NRF2.有反应性氧物种的反应性氧物种.与X结合的 adrenoleukodystrophy与X结合的 adrenoleukodystrophy是指X结合的 adrenoleukodystrophy与X结合的 adrenoleukodystrophy是指X结合的 adrenoleukodystrophy与X结合的 adrenoleukodystrophy是指X结合的 adrenoleukodystrophy与X结合的 adrenoleukodystrophy是指X结合的 adrenoleukodystrophy与X结合的 adrenoleukodystrophy是指X结合的 adrenoleukodystrophy与X结合的 adrenoleukodystrophy.

更多相关视频

Assessing Mitochondrial Function in Sciatic Nerve by High-Resolution Respirometry

Assessing Mitochondrial Function in Sciatic Nerve by High-Resolution Respirometry

Published on: May 5, 2022

Interactions with and Membrane Permeabilization of Brain Mitochondria by Amyloid Fibrils

Interactions with and Membrane Permeabilization of Brain Mitochondria by Amyloid Fibrils

Published on: September 28, 2019

相关概念视频

Alzheimer's Disease: Overview

Alzheimer's Disease: Overview

Alzheimer's Disease (AD) is a continually advancing neurodegenerative disorder, distinguished by escalating memory loss, cognitive dysfunction, and dementia. The disease unfolds in three stages: preclinical, mild cognitive impairment (MCI), and dementia. Its onset is insidious, and the progression gradual, with the cause not well explained by other disorders.
The clinical diagnosis of AD hinges on the presence of memory and other cognitive impairments. Biomarkers, such as changes in Aβ...

Sex-linked Disorders

Sex-linked Disorders

Like autosomes, sex chromosomes contain a variety of genes necessary for normal body function. When a mutation in one of these genes results in biological deficits, the disorder is considered sex-linked.

Protein Import into the Peroxisomes

Protein Import into the Peroxisomes

Cells contain membrane-bound organelles called peroxisomes that oxidize organic molecules by transferring hydrogen atoms to oxygen, producing hydrogen peroxide. Peroxisomes enzymatically convert the released hydrogen peroxide into water and oxygen.
Peroxisomal Protein Import:
Peroxisomes lack the genetic machinery required to code for their own proteins. Hence, most peroxisomal membrane, lumenal and transmembrane proteins are synthesized in the cytoplasm or ER and transported to the peroxisome...

Electron Transport Chain: Complex I and II

Electron Transport Chain: Complex I and II

The mitochondrial electron transport chain (ETC) is the main energy generation system in the eukaryotic cells. However, mitochondria also produce cytotoxic reactive oxygen species (ROS) due to the large electron flow during oxidative phosphorylation. While Complex I is one of the primary sources of superoxide radicals, ROS production by Complex II is uncommon and may only be observed in cancer cells with mutated complexes.
ROS generation is regulated and maintained at moderate levels necessary...