功能性人类AD模型与四种AD治疗方法的验证,使用与微电极阵列集成的图案化的iPSC衍生的皮质神经元
Julbert Caneus1, Kaveena Autar1, Nesar Akanda1
1University of Central Florida.
Research square
|June 3, 2024
概括
这项研究开发了一种新的阿尔茨海默病 (AD) 临床前模型,以测试治疗方法. 该模型成功地确定了可以逆转早期认知缺陷的药物,为新的AD治疗提供了希望.
科学领域:
- 神经科学是一个神经科学.
- 生物医学工程 生物医学工程
背景情况:
- 临床前模型对于选阿尔茨海默病 (AD) 治疗方法至关重要,特别是对于早期阶段,如轻度认知障碍 (MCI).
- 现有的模型往往缺乏在没有显著的神经元损失的情况下复制早期认知缺陷的能力,这阻碍了对前症状AD的研究.
- 长期增强 (LTP) 是学习和记忆的关键机制,是阿尔茨海默氏症早期受影响的功能参数.
研究的目的:
- 开发和验证早期阿尔茨海默病 (AD) 治疗的表型查系统.
- 为了建模认知缺陷,特别是长期潜能受损 (LTP),在神经元前细胞死亡的背景下.
- 建立一个平台,对潜在的AD治疗和其他神经退行性疾病进行高内容查.
主要方法:
- 在微电极阵列 (MEAs) 上共同培养成熟的人类iPSC衍生的皮质神经元和初级星体.
- 使用表面化学来模拟电路,以建模长期增强功率 (LTP) 功能.
- 评估阿米洛伊德-β 42 (Aβ42) 寡合体对LTP维持和治疗药物的疗效的影响.
主要成果:
- 在开发的模型中,氨基酸-β 42 (Aβ42) 寡合体显著降低了LTP维持.
- 与阿尔茨海默病 (AD) 治疗药物 (包括多内佩齐尔,孟坦丁,罗利普拉姆和萨拉卡提尼布) 的同时治疗成功地纠正了Aβ42诱导的LTP损伤.
- 该系统展示了其在没有显著的神经元细胞死亡的情况下模拟早期AD病理和治疗反应的能力.
结论:
- 经过验证的平台有效地模拟了早期阿尔茨海默病 (AD) 病理学,包括MCI前和MCI阶段.
- 该系统作为一种理想的平台,用于对AD和潜在的其他神经退行性疾病的治疗药物的高含量查.
- 这些发现突出了这个模型加速开发有效治疗认知衰退的潜力.
更多相关视频
11:52Establishment of an Electrophysiological Platform for Modeling ALS with Regionally-Specific Human Pluripotent Stem Cell-Derived Astrocytes and Neurons
Published on: August 26, 2021
2.2K
10:02Assessment of Spontaneous Alternation, Novel Object Recognition and Limb Clasping in Transgenic Mouse Models of Amyloid-β and Tau Neuropathology
Published on: May 28, 2017
26.7K
相关概念视频
Alzheimer's Disease: Overview
462
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...
The clinical diagnosis of AD hinges on the presence of memory and other cognitive impairments. Biomarkers, such as changes in Aβ...
462
EPS and iPS Cells in Disease Research
2.8K
Embryonic and induced pluripotent stem cells are excellent models for disease research because of their ability to self-renew and differentiate into most cell types. Somatic cells from a patient are isolated and reprogrammed into induced pluripotent stem cells or iPSCs. These iPSCs are later differentiated into the desired cell type, which mirrors the diseased cell of the patient. In this way, disease models have been created for investigating diseases such as Down syndrome, type I diabetes,...
2.8K
Alzheimer's Disease: Treatment
179
Alzheimer's Disease (AD), a neurodegenerative disorder, is pathologically identified by amyloid plaques and neurofibrillary tangles composed of tau protein. AD pharmacotherapy aims to manage cognitive symptoms, delay disease progression, and treat behavioral symptoms. The treatment is primarily symptomatic and palliative, with no definitive disease-modifying therapy available. Cholinesterase inhibitors, including donepezil (Aricept), rivastigmine (Exelon), and galantamine (Razadyne), are...
179
