中国神经再生研究(英文版) ›› 2025, Vol. 20 ›› Issue (9): 2624-2632.doi: 10.4103/NRR.NRR-D-24-00157

• 原著:退行性病与再生 • 上一篇    下一篇

小分子抑制剂 DDQ 促进阿尔茨海默病海马神经元细胞发育

  

  • 出版日期:2025-09-15 发布日期:2024-12-29

Small molecule inhibitor DDQ-treated hippocampal neuronal cells show improved neurite outgrowth and synaptic branching

Jangampalli Adi Pradeepkiran1, *, Priyanka Rawat1, 2, Arubala P. Reddy2 , Erika Orlov1 , P. Hemachandra Reddy1, 2, 3, 4, 5, 6, *   

  1. 1 Department of Internal Medicine, Texas Tech University Health Sciences Center, Lubbock, TX, USA;  2 Department of Nutritional Sciences, College of Human Sciences, Texas Tech University, Lubbock, TX, USA;  3 Department of Pharmacology & Neuroscience, Texas Tech University Health Sciences Center, Lubbock, TX, USA;  4 Department of Neurology, Texas Tech University Health Sciences Center, Lubbock, TX, USA;  5 Department of Speech, Language and Hearing Sciences, Texas Tech University Health Sciences Center, Lubbock, TX, USA;  6 Department of Public Health, Texas Tech University Health Sciences Center, Lubbock, TX, USA
  • Online:2025-09-15 Published:2024-12-29
  • Contact: P. Hemachandra Reddy, PhD, hemachandra.reddy@ttuhsc.edu; Jangampalli Adi Pradeepkiran, PhD, pradeep.jangampalli@ttuhsc.edu.
  • Supported by:
    This study was supported by NIH grants AG079264 (to PHR) and AG071560 (to APR).

摘要:

神经元的生长和分支过程是神经元发育和再生的一个重要方面。实验提供了小分子抑制剂DDQ对HT22神经元细胞神经元发育影响的证据。实验发现转染了cDNA 突变 Tau 的分化 HT22 细胞经 DDQ 处理后,总tau和p-tau水平降低,微管相关蛋白2、β-tubulin、突触素、囊泡乙酰胆碱转运蛋白和过氧化物酶体增殖物激活受体γ共激活因子1α水平升高。DDQ通过突触生长的增加改善了表达mTau HT22 神经元的发育。由此认为经 DDQ 处理的 mTau-HT22细胞具有功能性神经元发育特征。

https://orcid.org/0000-0002-9560-9948 (P. Hemachandra Reddy); 

https://orcid.org/0000-0003-4678-6443 (Jangampalli Adi Pradeepkiran)

Abstract: The process of neurite outgrowth and branching is a crucial aspect of neuronal development and regeneration. Axons and dendrites, sometimes referred to as neurites, are extensions of a neuron’s cellular body that are used to start networks. Here we explored the effects of diethyl (3,4-dihydroxyphenethylamino)(quinolin-4-yl) methylphosphonate (DDQ) on neurite developmental features in HT22 neuronal cells. In this work, we examined the protective effects of DDQ on neuronal processes and synaptic outgrowth in differentiated HT22 cells expressing mutant Tau (mTau) cDNA. To investigate DDQ characteristics, cell viability, biochemical, molecular, western blotting, and immunocytochemistry were used. Neurite outgrowth is evaluated through the segmentation and measurement of neural processes. These neural processes can be seen and measured with a fluorescence microscope by manually tracing and measuring the length of the neurite growth. These neuronal processes can be observed and quantified with a fluorescent microscope by manually tracing and measuring the length of the neuronal HT22. DDQ-treated mTau-HT22 cells (HT22 cells transfected with cDNA mutant Tau) were seen to display increased levels of synaptophysin, MAP-2, and β-tubulin. Additionally, we confirmed and noted reduced levels of both total and p-Tau, as well as elevated levels of microtubule-associated protein 2, β-tubulin, synaptophysin, vesicular acetylcholine transporter, and the mitochondrial biogenesis protein–peroxisome proliferator-activated receptor-gamma coactivator-1α. In mTau-expressed HT22 neurons, we observed DDQ enhanced the neurite characteristics and improved neurite development through increased synaptic outgrowth. Our findings conclude that mTau-HT22 (Alzheimer’s disease) cells treated with DDQ have functional neurite developmental characteristics. The key finding is that, in mTau-HT22 cells, DDQ preserves neuronal structure and may even enhance nerve development function with mTau inhibition.

Key words: diethyl (3,4- dihydroxyphenethylamino) (quinolin-4-yl) methylphosphonate (DDQ),  hippocampal neuronal cells,  HT22,  neurite outgrowth,   neuronal development,  small molecule