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Chen B, Zhao Y, Li W, Hang J, Yin M, Yu H. Echinocystic acid provides a neuroprotective effect via the PI3K/AKT pathway in intracerebral haemorrhage mice. ANNALS OF TRANSLATIONAL MEDICINE 2020; 8:6. [PMID: 32055597 DOI: 10.21037/atm.2019.12.35] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Background Echinocystic acid (EA), a natural extract from plants of Gleditsia sinensis Lam, exhibits anti-inflammatory, antioxidant and analgesic activities in different diseases. In this study, we explored the pharmacological effects of EA on intracerebral haemorrhage (ICH) in a collagenase-induced ICH mouse model. Methods EA (50 mg/kg, i.p. q.d) was injected after the establishment of ICH, and we measured the amount of degraded neurons in brain tissue with Fluoro-Jade C staining and the haemorrhagic injury volume with Luxol fast blue staining on day 3 after ICH. We also assessed animal behaviour by rotarod test, claw force test and modified neurological severity score (mNSS) score. The expression of apoptosis-related proteins such as Bcl-2, Bax and cleaved caspase-3 was analysed by Western blot. Results EA reduced both the death of neurons and the volume of haemorrhagic injury after ICH. The haemorrhage infarct volume of the ICH+EA group was 9.84%±3.32% lower than that in the ICH group of mice (P<0.01). The mNSS score of the ICH+EA treated group was 4.75±0.55 lower than that in the ICH group (P<0.01). With the administration of EA after ICH, the expression of Bcl-2 was upregulated while the Bax level was downregulated. The cleaved caspase-3 level was also significantly decreased. We further investigated the neuroprotective mechanism of EA. Western blot results showed that the expression of P-AKT increased after EA treatment and decreased after LY294002, an inhibitor of the PI3K/AKT pathway, treatment. Conclusions EA may provide neuroprotection via activation of the PI3K/AKT pathway. Given the safety of EA has been proven, further studies are required to investigate whether EA is a potential agent for the treatment of ICH.
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Affiliation(s)
- Beilei Chen
- Clinical Medical College of Yangzhou University, Yangzhou 225009, China.,Department of Neurology, Northern Jiangsu People's Hospital, Yangzhou 225001, China.,Dalian Medical University, Dalian 116044, China
| | - Yuanyuan Zhao
- Department of Neurology, Northern Jiangsu People's Hospital, Yangzhou 225001, China.,Dalian Medical University, Dalian 116044, China
| | - Wei Li
- Department of Neurology, Northern Jiangsu People's Hospital, Yangzhou 225001, China.,Dalian Medical University, Dalian 116044, China
| | - Jing Hang
- Clinical Medical College of Yangzhou University, Yangzhou 225009, China.,Department of Neurology, Northern Jiangsu People's Hospital, Yangzhou 225001, China
| | - Mengmei Yin
- Clinical Medical College of Yangzhou University, Yangzhou 225009, China.,Department of Neurology, Northern Jiangsu People's Hospital, Yangzhou 225001, China
| | - Hailong Yu
- Clinical Medical College of Yangzhou University, Yangzhou 225009, China.,Department of Neurology, Northern Jiangsu People's Hospital, Yangzhou 225001, China.,Affiliated of Drum Tower Hospital, Medical school of Nanjing University, Nanjing 210008, China
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Ding W, Chen R, Wu C, Chen W, Zhang H, Fan X, Wang H, Ji Y, Xie L, Ning X, Shen L. Increased expression of HERPUD1 involves in neuronal apoptosis after intracerebral hemorrhage. Brain Res Bull 2016; 128:40-47. [PMID: 27871950 DOI: 10.1016/j.brainresbull.2016.11.006] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2016] [Revised: 11/13/2016] [Accepted: 11/16/2016] [Indexed: 10/20/2022]
Abstract
Homocysteine-inducible endoplasmic reticulum stress-inducible ubiquitin-like domain member 1 protein (HERPUD1) is involved in endoplasmic reticulum stress response. Immense amounts of research showed HERPUD1 plays multiple roles in various models. In this work, we explored the role of HERPUD1 during the pathophysiological processes of intracerebral hemorrhage (ICH). Rat ICH model was established and verified by behavioral test. Western blot and immunohistochemistry revealed a significant up-regulation of HERPUD1 expression around the hematoma after ICH. Besides, the expression of cytochrome c (cyt c) and active caspase-3 increased accompanied to HERPUD1 expression. Double-labeled immunofluorescence indicated HERPUD1 mainly colocalized with neurons. Further study showed HERPUD1 silence brought about up-regulation of apoptosis markers including cyt c and active caspase-3 coupled with increased cell apoptosis in vitro model. All these findings suggested that HERPUD1 might play a protective role in ICH-induced neuronal apoptosis in rat models.
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Affiliation(s)
- Wensen Ding
- Department of Neurology, Affiliated Hospital of Nantong University, Nantong, 226001, Jiangsu Province, China; Jiangsu Province Key Laboratory for Inflammation and Molecular Drug Target, Medical College of Nantong University, Nantong, 226001, Jiangsu Province, China
| | - Rongrong Chen
- Jiangsu Province Key Laboratory for Inflammation and Molecular Drug Target, Medical College of Nantong University, Nantong, 226001, Jiangsu Province, China
| | - Chunshuai Wu
- Jiangsu Province Key Laboratory for Inflammation and Molecular Drug Target, Medical College of Nantong University, Nantong, 226001, Jiangsu Province, China
| | - Weihai Chen
- Jiangsu Province Key Laboratory for Inflammation and Molecular Drug Target, Medical College of Nantong University, Nantong, 226001, Jiangsu Province, China
| | - Hongtian Zhang
- Jiangsu Province Key Laboratory for Inflammation and Molecular Drug Target, Medical College of Nantong University, Nantong, 226001, Jiangsu Province, China
| | - Xingjuan Fan
- Department of Neurology, Affiliated Hospital of Nantong University, Nantong, 226001, Jiangsu Province, China
| | - Hongmei Wang
- Department of Neurology, Affiliated Hospital of Nantong University, Nantong, 226001, Jiangsu Province, China; Jiangsu Province Key Laboratory for Inflammation and Molecular Drug Target, Medical College of Nantong University, Nantong, 226001, Jiangsu Province, China
| | - Yuteng Ji
- Department of Neurology, Affiliated Hospital of Nantong University, Nantong, 226001, Jiangsu Province, China; Jiangsu Province Key Laboratory for Inflammation and Molecular Drug Target, Medical College of Nantong University, Nantong, 226001, Jiangsu Province, China
| | - Lili Xie
- Department of Neurology, Affiliated Hospital of Nantong University, Nantong, 226001, Jiangsu Province, China; Jiangsu Province Key Laboratory for Inflammation and Molecular Drug Target, Medical College of Nantong University, Nantong, 226001, Jiangsu Province, China
| | - Xiaojin Ning
- Department of Neurology, Affiliated Hospital of Nantong University, Nantong, 226001, Jiangsu Province, China; Jiangsu Province Key Laboratory for Inflammation and Molecular Drug Target, Medical College of Nantong University, Nantong, 226001, Jiangsu Province, China
| | - Lihua Shen
- Department of Neurology, Affiliated Hospital of Nantong University, Nantong, 226001, Jiangsu Province, China.
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Xie L, Li A, Shen J, Cao M, Ning X, Yuan D, Ji Y, Wang H, Ke K. OTUB1 attenuates neuronal apoptosis after intracerebral hemorrhage. Mol Cell Biochem 2016; 422:171-180. [PMID: 27629786 DOI: 10.1007/s11010-016-2817-8] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2016] [Accepted: 09/08/2016] [Indexed: 01/18/2023]
Abstract
OTUB1 is a member of deubiquitinating enzymes, which was shown as a proteasome-associated DUB to be involved in the proteins Ub-dependent degradation. Previous studies have indicated that OTUB1 was expressed in brain. But its distribution and function in the brain remain unclear. In this study, we explored the roles of OTUB1 protein in the pathophysiology of intracerebral hemorrhage (ICH). From the results of Western blot, immunohistochemistry, and immunofluorescence, we found an obvious up-regulation of OTUB1 in neurons adjacent to the hematoma after ICH. Furthermore, we also found that the increase of OTUB1 expression was accompanied by the enhanced expression of Bax and active caspase-3, and decreased expression of Bcl-2 in the pathological process of rat ICH. What's more, our in vitro study, using OTUB1 RNA interference in PC12 cells, suggested that OTUB1 might exert its anti-apoptotic function in neuronal apoptosis. Therefore, OTUB1 may play a role in protecting the brain from secondary damage following ICH.
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Affiliation(s)
- Lili Xie
- Department of Neurology, Affiliated Hospital of Nantong University, Nantong, 226001, Jiangsu, People's Republic of China
- Jiangsu Province Key Laboratory for Inflammation and Molecular Drug Target, Nantong University, Nantong, 226001, Jiangsu, People's Republic of China
| | - Aihong Li
- Department of Neurology, Affiliated Hospital of Nantong University, Nantong, 226001, Jiangsu, People's Republic of China
| | - Jiabing Shen
- Department of Neurology, Affiliated Hospital of Nantong University, Nantong, 226001, Jiangsu, People's Republic of China
- Jiangsu Province Key Laboratory for Inflammation and Molecular Drug Target, Nantong University, Nantong, 226001, Jiangsu, People's Republic of China
| | - Maohong Cao
- Department of Neurology, Affiliated Hospital of Nantong University, Nantong, 226001, Jiangsu, People's Republic of China
| | - Xiaojin Ning
- Department of Neurology, Affiliated Hospital of Nantong University, Nantong, 226001, Jiangsu, People's Republic of China
- Jiangsu Province Key Laboratory for Inflammation and Molecular Drug Target, Nantong University, Nantong, 226001, Jiangsu, People's Republic of China
| | - Debin Yuan
- Department of Neurology, Affiliated Hospital of Nantong University, Nantong, 226001, Jiangsu, People's Republic of China
- Jiangsu Province Key Laboratory for Inflammation and Molecular Drug Target, Nantong University, Nantong, 226001, Jiangsu, People's Republic of China
| | - Yuteng Ji
- Department of Neurology, Affiliated Hospital of Nantong University, Nantong, 226001, Jiangsu, People's Republic of China
- Jiangsu Province Key Laboratory for Inflammation and Molecular Drug Target, Nantong University, Nantong, 226001, Jiangsu, People's Republic of China
| | - Hongmei Wang
- Department of Neurology, Affiliated Hospital of Nantong University, Nantong, 226001, Jiangsu, People's Republic of China
- Jiangsu Province Key Laboratory for Inflammation and Molecular Drug Target, Nantong University, Nantong, 226001, Jiangsu, People's Republic of China
| | - Kaifu Ke
- Department of Neurology, Affiliated Hospital of Nantong University, Nantong, 226001, Jiangsu, People's Republic of China.
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