Endophilin 1 knockdown prevents synaptic dysfunction induced by oligomeric amyloid β

Yin,Yichen; Cha,Caihui; Wu,Fengming; Li,Jiong; Li,Sumei; Zhu,Xiaonan; Zhang,Jifeng; Guo,Guoqing

doi:10.3892/mmr.2019.10158

Endophilin 1 knockdown prevents synaptic dysfunction induced by oligomeric amyloid β

Authors:
- Yichen Yin
- Caihui Cha
- Fengming Wu
- Jiong Li
- Sumei Li
- Xiaonan Zhu
- Jifeng Zhang
- Guoqing Guo
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Affiliations: Department of Neurology, Guangzhou Red Cross Hospital, Medical College, Jinan University, Guangzhou, Guangdong 510220, P.R. China, Department of Pediatrics, Guangzhou Women and Children's Medical Center, Guangzhou, Guangdong 510120, P.R. China, Department of Anatomy, Medical College of Jinan University, Guangzhou, Guangdong 510630, P.R. China
Published online on: April 12, 2019 https://doi.org/10.3892/mmr.2019.10158
Pages: 4897-4905
Copyright: © Yin et al. This is an open access article distributed under the terms of Creative Commons Attribution License.

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Abstract

Amyloid β (Aβ) has been reported to have an important role in the cognitive deficits of Alzheimer's disease (AD), as oligomeric Aβ promotes synaptic dysfunction and triggers neuronal death. Recent evidence has associated an endocytosis protein, endophilin 1, with AD, as endophilin 1 levels have been reported to be markedly increased in the AD brain. The increase in endophilin 1 levels in neurons is associated with an increase in the activation of the stress kinase JNK, with subsequent neuronal death. In the present study, whole‑cell patch‑clamp recording demonstrated that oligomeric Aβ caused synaptic dysfunction and western blotting revealed that endophilin 1 was highly expressed prior to neuronal death of cultured hippocampal neurons. Furthermore, RNA interference and electrophysiological recording techniques in cultured hippocampal neurons demonstrated that knockdown of endophilin 1 prevented synaptic dysfunction induced by Aβ. Thus, a potential role for endophilin 1 in Aβ‑induced postsynaptic dysfunction has been identified, indicating a possible direction for the prevention of postsynaptic dysfunction in cognitive impairment and suggesting that endophilin may be a potential target for the clinical treatment of AD.

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