Related Experiment Video
Updated: Mar 3, 2026
Methods for the Modulation and Analysis of NF-κB-dependent Adult Neurogenesis
Published on: February 13, 2014
NF-κB dependent up-regulation of TRPC6 by Aβ in BV-2 microglia cells increases COX-2 expression and contributes to
Na Liu1, Yuansu Zhuang1, Zhikui Zhou1
1Department of Neurology, The Affiliated People's Hospital of Jiangsu University, Zhenjiang 212000, Jiangsu, China.
Abstract:
The deposition of amyloid β-protein (Aβ) has been involved in neurodegeneration of Alzheimer's disease (AD). Besides Aβ plaques and neuronal loss, microglia activation is also common in AD patient brains, suggesting its important role in the pathogenesis of AD. Although activation of microglia by Aβ plaques has been demonstrated, the mechanism underlying it is still largely unclear. Here, we found that TRPC6 has a crucial role in microglia activation by Aβ. Aβ up-regulates the level of TRPC6 via NF-κB in BV-2 microglia and increases the expression of pro-inflammatory factors and oxidative enzyme, COX-2. Knock-down of TRPC6 reduces the Aβ-induced expression of pro-inflammatory factors and COX-2 and the damage of hippocampus neurons. Furthermore, inhibition of COX-2 also protects hippocampus neurons from Aβ-induced inflammatory damage. Collectively, our studies suggest that Aβ increase the expression of TRPC6 via NF-κB in BV-2 microglia and promotes the production of COX-2, which induces hippocampus neuron damage.
Insights
Alzheimer's disease involves amyloid-beta (Aβ) activating microglia via TRPC6, leading to inflammation and neuron damage. Targeting TRPC6 or COX-2 may protect against this neurodegeneration.
Area of Science:
- Neuroscience
- Immunology
- Molecular Biology
Background:
- Alzheimer's disease (AD) pathogenesis involves amyloid-beta (Aβ) deposition and microglia activation.
- Microglia play a critical role in AD, but the mechanisms of Aβ-induced activation are not fully understood.
Purpose of the Study:
- To investigate the role of TRPC6 in Aβ-induced microglia activation and subsequent neuroinflammation in Alzheimer's disease.
Main Methods:
- Utilized BV-2 microglia cell line to study Aβ effects.
- Investigated TRPC6 expression and its regulation by NF-κB.
- Assessed pro-inflammatory factors and COX-2 expression.
- Performed TRPC6 knock-down and COX-2 inhibition experiments.
- Evaluated hippocampus neuron damage.
Main Results:
- Aβ up-regulates TRPC6 expression in BV-2 microglia via NF-κB signaling.
- Aβ-induced TRPC6 enhances pro-inflammatory factors and COX-2 expression.
- TRPC6 knock-down mitigates Aβ-induced inflammation and protects hippocampus neurons.
- COX-2 inhibition also prevents Aβ-induced inflammatory damage to hippocampus neurons.
Conclusions:
- Aβ-induced TRPC6 upregulation via NF-κB is a key mechanism in microglia activation.
- This pathway promotes COX-2 production, leading to hippocampus neuron damage in AD.
- TRPC6 and COX-2 are potential therapeutic targets for Alzheimer's disease.
