1
|
Qin X, Zhang X, Li P, Wang M, Yan L, Pan P, Zhang H, Hong X, Liu M, Bao Z. MicroRNA-185 activates PI3K/AKT signalling pathway to alleviate dopaminergic neuron damage via targeting IGF1 in Parkinson's disease. J Drug Target 2021; 29:875-883. [PMID: 33560148 DOI: 10.1080/1061186x.2021.1886300] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Abstract
OBJECTIVES Studies have extensively explored the role of microRNAs (miRs) in Parkinson's disease (PD) and miR-185 is related to autophagy and apoptosis of dopaminergic neurons in PD. However, the role of miR-185 mediating insulin-like growth factor 1 (IGF1)/phosphatidylinositol-3-kinase/protein kinase B signalling pathway (PI3K/AKT) in PD still needs in-depth exploration. METHODS Rat PD models were established by injection of 6-hydroxydopamine. PD rats were injected with miR-185 or insulin-like growth factor 1 (IGF1)-related sequences. Behaviour tests were performed, oxidative stress-related factors, tyrosine hydroxylase (TH)-, glial fibrillary acidic protein (GFAP)-, ionised calcium-binding adaptor molecule-1 (Iba-1)- and TUNEL-positive cells in the substantia nigra were determined. Levels of miR-185, IGF1 and phosphatidylinositol-3-kinase/protein kinase B (PI3K/AKT) signalling pathway-related factors were also detected. RESULTS miR-185 level was reduced in rats with PD. Restoring miR-185 promoted behaviour functions, ameliorated pathological damages and oxidative stress, increased TH-positive dopaminergic neurons, decreased GFAP- and Iba-1-positive cells and restrained neuronal apoptosis in the substantia nigra in PD rats. miR-185 targeted IGF1 to activate PI3K/AKT signalling pathway. Up-regulation of IGF1 mitigated restored miR-185-mediated effects on PD rats. CONCLUSION This study illustrates that miR-185 ameliorates dopaminergic neuron damage via targeting IGF1 and activating PI3K/AKT signalling pathway in PD, which renews the therapy for PD.
Collapse
Affiliation(s)
| | - Xia Zhang
- Zhaoqing Medical College, Zhaoqing, China
| | - Pinyu Li
- Zhaoqing Medical College, Zhaoqing, China
| | - Min Wang
- Zhaoqing Medical College, Zhaoqing, China
| | - Li Yan
- Zhaoqing Medical College, Zhaoqing, China
| | | | | | | | - Muxi Liu
- Zhaoqing Medical College, Zhaoqing, China
| | - Zeqing Bao
- Zhaoqing Medical College, Zhaoqing, China
| |
Collapse
|
2
|
Wang YJ, Wong HSC, Wu CC, Chiang YH, Chiu WT, Chen KY, Chang WC. The functional roles of IGF-1 variants in the susceptibility and clinical outcomes of mild traumatic brain injury. J Biomed Sci 2019; 26:94. [PMID: 31787098 PMCID: PMC6886173 DOI: 10.1186/s12929-019-0587-9] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2019] [Accepted: 10/24/2019] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Insulin-like growth factor 1 (IGF-1) is an important pleiotropic hormone that exerts neuroprotective and neuroreparative effects after a brain injury. However, the roles of IGF-1 variants in mild traumatic brain injury (mTBI) are not yet fully understood. This study attempted to elucidate the effects of IGF-1 variants on the risk and neuropsychiatric outcomes of mTBI. METHODS Based on 176 recruited mTBI patients and 1517 control subjects from the Taiwan Biobank project, we first compared the genotypic distributions of IGF-1 variants between the two groups. Then, we analyzed associations of IGF-1 variants with neuropsychiatric symptoms after mTBI, including anxiety, depression, dizziness, and sleep disturbances. Functional annotation of IGF-1 variants was also performed through bioinformatics databases. RESULTS The minor allele of rs7136446 was over-represented in mTBI patients compared to community-based control subjects. Patients carrying minor alleles of rs7136446 and rs972936 showed more dizziness and multiple neuropsychiatric symptoms after brain injury. CONCLUSIONS IGF-1 variants were associated with the risk and neuropsychiatric symptoms of mTBI. The findings highlight the important role of IGF-1 in the susceptibility and clinical outcomes of mTBI.
Collapse
Affiliation(s)
- Yu-Jia Wang
- Ph.D. Program for Neural Regenerative Medicine, College of Medical Science and Technology, Taipei Medical University and National Health Research Institutes, Taipei, Taiwan
| | - Henry Sung-Ching Wong
- Department of Clinical Pharmacy, School of Pharmacy, Taipei Medical University, Taipei, Taiwan
| | - Chung-Che Wu
- Department of Surgery, College of Medicine, Taipei Medical University, Taipei, Taiwan
- Department of Neurosurgery, Taipei Medical University Hospital, Taipei, Taiwan
| | - Yung-Hsiao Chiang
- Department of Surgery, College of Medicine, Taipei Medical University, Taipei, Taiwan
- Department of Neurosurgery, Taipei Medical University Hospital, Taipei, Taiwan
| | - Wen-Ta Chiu
- Institute of Injury Prevention and Control, College of Public Health and Nutrition, Taipei Medical University, Taipei, Taiwan
| | - Kai-Yun Chen
- Ph.D. Program for Neural Regenerative Medicine, College of Medical Science and Technology, Taipei Medical University and National Health Research Institutes, Taipei, Taiwan
| | - Wei-Chiao Chang
- Department of Clinical Pharmacy, School of Pharmacy, Taipei Medical University, Taipei, Taiwan
- Department of Pharmacy, Wan Fang Hospital, Taipei Medical University, Taipei, Taiwan
- Master Program for Clinical Pharmacogenomics and Pharmacoproteomics, School of Pharmacy, Taipei Medical University, Taipei, Taiwan
- Department of Medical Research, Shuang Ho Hospital, Taipei Medical University, New Taipei City, Taiwan
- Pain Research Center, Wan Fang Hospital, Taipei Medical University, Taipei, Taiwan
| |
Collapse
|
3
|
Chen W, He B, Tong W, Zeng J, Zheng P. Astrocytic Insulin-Like Growth Factor-1 Protects Neurons Against Excitotoxicity. Front Cell Neurosci 2019; 13:298. [PMID: 31338023 PMCID: PMC6629877 DOI: 10.3389/fncel.2019.00298] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2019] [Accepted: 06/18/2019] [Indexed: 01/14/2023] Open
Abstract
Background Exogenous insulin like growth factor-1 (IGF-1) is known to be neuroprotective in animal models with brain insults, while it can also cause hyperexcitability in rodents. In this regard, the role of endogenous IGF-1 in brain responses to brain insults like excitotoxicity, a common pathology in brain injuries, remains to be elucidated. Here, we investigated the potential role of cell-specific endogenous IGF-1 in the kainic acid (KA) -induced degeneration of the neurons. Methods Kainic acid was given to primary cultured cortical neurons and co-cultured astrocytes were added as a supportive system. We evaluated the cell proliferation rate, IGF-1 level in different groups and applied the PCR-Chip assay to explore the downstream of IGF-1. In addition, we applied the viral transfer of astrocytic IGF-1 to rodents treated with KA and assessed the associated molecular marker and behavioral outcomes in these rodents. Results We found KA induced increased cell death and hyperphosphorylated tau in neurons; co-cultured astrocytes could prevent these pathologies, and this rescuing effect was abrogated with blockade of the astrocytic IGF-1 with AG1024 (IGF-1R inhibitor). PCR-Chip assay identified that astrocytic IGF-1 could decrease the p-GSK-3 at Tyr 216 in neurons treated with KA and this effect was abrogated with AG1024 as well. In addition, in vivo study showed that gene transfer of astrocytic IGF-1 decreased p-tau and cognitive dysfunction in KA mice. Conclusion Our results show astrocytic IGF-1 exhibits neuroprotective properties in neurodegenerative processes in the CNS.
Collapse
Affiliation(s)
- Wei Chen
- Department of Neurosurgery, Shanghai University of Medicine and Health Sciences, Shanghai, China
| | - Bin He
- Department of Neurosurgery, Shanghai University of Medicine and Health Sciences, Shanghai, China
| | - Wusong Tong
- Department of Neurosurgery, Shanghai Pudong New Area People's Hospital, Pudong, China
| | - Jinsong Zeng
- Department of Neurosurgery, Shanghai University of Medicine and Health Sciences, Shanghai, China
| | - Ping Zheng
- Department of Neurosurgery, Shanghai Pudong New Area People's Hospital, Pudong, China
| |
Collapse
|
4
|
Lewitt MS, Boyd GW. The Role of Insulin-Like Growth Factors and Insulin-Like Growth Factor-Binding Proteins in the Nervous System. BIOCHEMISTRY INSIGHTS 2019; 12:1178626419842176. [PMID: 31024217 PMCID: PMC6472167 DOI: 10.1177/1178626419842176] [Citation(s) in RCA: 90] [Impact Index Per Article: 18.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/12/2019] [Accepted: 03/15/2019] [Indexed: 01/23/2023]
Abstract
The insulin-like growth factors (IGF-I and IGF-II) and their receptors are widely expressed in nervous tissue from early embryonic life. They also cross the blood brain barriers by active transport, and their regulation as endocrine factors therefore differs from other tissues. In brain, IGFs have paracrine and autocrine actions that are modulated by IGF-binding proteins and interact with other growth factor signalling pathways. The IGF system has roles in nervous system development and maintenance. There is substantial evidence for a specific role for this system in some neurodegenerative diseases, and neuroprotective actions make this system an attractive target for new therapeutic approaches. In developing new therapies, interaction with IGF-binding proteins and other growth factor signalling pathways should be considered. This evidence is reviewed, gaps in knowledge are highlighted, and recommendations are made for future research.
Collapse
Affiliation(s)
- Moira S Lewitt
- School of Health & Life Sciences, University of the West of Scotland, Paisley, UK
| | - Gary W Boyd
- School of Health & Life Sciences, University of the West of Scotland, Paisley, UK
| |
Collapse
|
5
|
Chen X, Xiao Y, Wei L, Wu Y, Lu J, Guo W, Huang S, Zhou M, Mo M, Li Z, Cen L, Li S, Yang C, Wu Z, Hu S, Pei Z, Yang X, Qu S, Xu P. Association of DNMT3b gene variants with sporadic Parkinson's disease in a Chinese Han population. J Gene Med 2017; 19:360-365. [PMID: 28990350 DOI: 10.1002/jgm.2991] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2017] [Revised: 09/11/2017] [Accepted: 09/27/2017] [Indexed: 01/16/2023] Open
Abstract
BACKGROUND Parkinson's disease (PD) is the second most common neurodegenerative disorder worldwide. Epigenetic modifications, specifically DNA methylation, have been implicated in the development of this disease. Genetic variants of DNA methyltransferase 3b (DNMT3b), one of the most important DNA methyltransferases, were shown to be associated with PD in a Brazilian population. However, it is unclear whether genetic variants of DNMT3b increase the risk of PD in the Chinese Han people. The present study aimed to investigate the association of the DNMT3b variants rs2424913, rs998382 and rs2424932 with PD in a Chinese Han population. METHODS We studied 487 Chinese Han patients with sporadic PD and 485 healthy age-, sex- and ethnicity-matched controls. DNA was extracted from peripheral blood leukocytes and the individual genotypes were determined using the SNaPshot method. RESULTS We found that the rs2424932 and rs998382 variants were significantly associated with an increased risk of PD compared to the controls [rs2424932: odds ratio (OR) = 1.632, 95% confidence interval (CI) = 1.108-2.406, p = 0.013; rs998382: OR = 1.612, 95% CI = 1.103-2.382, p = 0.014]. Subgroup analysis suggested that female patients carrying the rs2424932 or rs998382 variants were more likely to develop PD than female controls (rs2424932: OR = 3.863, 95% CI = 2.004-7.445, p < 0.001; rs998382: OR = 3.679, 95% CI = 1.943-6.964, p < 0.001). Haplotype analysis indicated that the three variants comprised one block and that the Trs2424913 -Crs998382 -A rs2424932 haplotype was correlated with an increased risk of PD (p = 0.0046), especially for Chinese Han females (p < 0.0001). CONCLUSIONS The results of the present study strongly suggest that DNMT3b variants are associated with PD in the Chinese Han people, especially females.
Collapse
Affiliation(s)
- Xiang Chen
- Department of Neurology, National Key Clinical Department and Key Discipline of Neurology The First Affiliated Hospital of Sun Yat-sen University, Guangzhou, China
| | - Yousheng Xiao
- Department of Neurology, National Key Clinical Department and Key Discipline of Neurology The First Affiliated Hospital of Sun Yat-sen University, Guangzhou, China
- Department of Neurology, The First Affiliated Hospital of Guangxi Medical University, Guangxi, China
| | - Lei Wei
- Department of Neurology, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, China
| | - Yijuan Wu
- Department of Neurology, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
- State Key Laboratory of Respiratory Disease of the First Affiliated Hospital of Guangzhou Medical University, Guangdong, China
| | - Jianjun Lu
- Department of Neurology, Guangdong 999 Hospital of Guangzhou Medical University, Guangzhou, China
| | - Wenyuan Guo
- Department of Neurology, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
| | - Shuxuan Huang
- Department of Neurology, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
| | - Miaomiao Zhou
- Department of Neurology, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
| | - Mingshu Mo
- Department of Neurology, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
| | - Zhe Li
- Department of Neurology, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
| | - Luan Cen
- Department of Neurology, The First Affiliated Hospital of Guangxi Medical University, Guangxi, China
| | - Shaomin Li
- Department of Neurology, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
| | - Chaohao Yang
- Department of Neurology, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
| | - Zhuohua Wu
- Department of Neurology, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
| | - Sophie Hu
- Cumming School of Medicine, University of Calgary, Calgary, Canada
| | - Zhong Pei
- Department of Neurology, National Key Clinical Department and Key Discipline of Neurology The First Affiliated Hospital of Sun Yat-sen University, Guangzhou, China
| | - XinLing Yang
- Department of Neurology, The Second Affiliated Hospital of Xinjiang Medical University, Urumqi, China
| | - Shaogang Qu
- Clinical Medicine Research Centre, ShunDe Hospital of Southern Medical University, Foshan, Guangdong, China
| | - Pingyi Xu
- Department of Neurology, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
- State Key Laboratory of Respiratory Disease of the First Affiliated Hospital of Guangzhou Medical University, Guangdong, China
| |
Collapse
|