1
|
Liu Y, Ye Q, Dai Y, Hu J, Chen J, Dong J, Li H, Dou Z. Integrating analysis of mRNA expression profiles indicates Sgk1 as a key mediator in muscle-brain crosstalk during resistance exercise. Biochem Biophys Res Commun 2024; 719:150075. [PMID: 38749087 DOI: 10.1016/j.bbrc.2024.150075] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/01/2024] [Revised: 04/02/2024] [Accepted: 05/07/2024] [Indexed: 06/05/2024]
Abstract
Abundant evidence has shown the protective effect of aerobic exercise on central neuronal system, however, research about resistance exercise remains limited. To evaluate the effect and potential molecular mechanisms of resistance exercise in improving cognition and mental health, three-month-old male C57BL/6J mice underwent resistance training for five weeks. Body parameters, cognitive performance and synaptic plasticity were then assessed. In both groups, total RNA from the frontal cortex, hippocampus and gastrocnemius was isolated and sequenced, GO term and KEGG analysis were performed to identify molecular mechanisms. The results from RNA sequencing were then verified by RT-PCR. Our data found that mice in training group showed reduced anxiety-like behavior and better spatial memory. Accordingly, resistance exercise specifically increased the number of thin spines without affecting the number of other kind of spines. mRNA sequence analysis showed that resistance exercise induced differential expression of hundreds of genes in the above three tissues. KEGG analysis indicated the FoxO signaling pathway the most significant changed pathway throughout the brain and muscle. GO terms analysis showed that Sgk1 was enriched in the three key cognition related BP, including long-term memory, learning or memory and memory, and the expression level of Sgk1 was positive related with cognitive performance in the water maze. In conclusion, resistance exercise improved the mental health, cognition and synaptic plasticity of mice. Integrating analysis of mRNA expression profiles in frontal cortex, hippocampus and muscle reveals Sgk1 as the key mediator in brain-muscle crosstalk.
Collapse
Affiliation(s)
- Yan Liu
- Department of Rehabilitation, Huazhong University of Science and Technology Union Shenzhen Hospital (Nanshan Hospital), Shenzhen, China
| | - Qiuping Ye
- Department of Rehabilitation Medicine, The Third Affiliated Hospital of Sun Yat-Sen University, Guangzhou, China; South China Research Center for Acupuncture and Moxibustion, Guangzhou Higher Education Mega Center, Medical College of Acu-Moxi and Rehabilitation, Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Yong Dai
- Department of Rehabilitation Medicine, The Third Affiliated Hospital of Sun Yat-Sen University, Guangzhou, China; South China Research Center for Acupuncture and Moxibustion, Guangzhou Higher Education Mega Center, Medical College of Acu-Moxi and Rehabilitation, Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Jiahui Hu
- Department of Rehabilitation Medicine, The Third Affiliated Hospital of Sun Yat-Sen University, Guangzhou, China; South China Research Center for Acupuncture and Moxibustion, Guangzhou Higher Education Mega Center, Medical College of Acu-Moxi and Rehabilitation, Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Jiemei Chen
- Department of Rehabilitation Medicine, The Third Affiliated Hospital of Sun Yat-Sen University, Guangzhou, China
| | - Juntao Dong
- Department of Rehabilitation, Huazhong University of Science and Technology Union Shenzhen Hospital (Nanshan Hospital), Shenzhen, China
| | - Hao Li
- Department of Rehabilitation, Huazhong University of Science and Technology Union Shenzhen Hospital (Nanshan Hospital), Shenzhen, China
| | - Zulin Dou
- Department of Rehabilitation Medicine, The Third Affiliated Hospital of Sun Yat-Sen University, Guangzhou, China; South China Research Center for Acupuncture and Moxibustion, Guangzhou Higher Education Mega Center, Medical College of Acu-Moxi and Rehabilitation, Guangzhou University of Chinese Medicine, Guangzhou, China.
| |
Collapse
|
2
|
Seo MH, Kwon D, Kim SH, Yeo S. Association between Decreased SGK1 and Increased Intestinal α-Synuclein in an MPTP Mouse Model of Parkinson's Disease. Int J Mol Sci 2023; 24:16408. [PMID: 38003598 PMCID: PMC10671719 DOI: 10.3390/ijms242216408] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2023] [Revised: 11/13/2023] [Accepted: 11/14/2023] [Indexed: 11/26/2023] Open
Abstract
Parkinson's disease (PD) is a globally common progressive neurodegenerative disease resulting from the loss of dopaminergic neurons in the brain. Increased α-synuclein (α-syn) is associated with the degeneration of dopaminergic neurons and non-motor symptoms like gastrointestinal disorders. In this study, we investigated the association between serum/glucocorticoid-related kinase 1 (SGK1) and α-syn in the colon of a PD mouse model. SGK1 and α-syn expression patterns were opposite in the surrounding colon tissue, with decreased SGK1 expression and increased α-syn expression in the PD group. Immunofluorescence analyses revealed the colocation of SGK1 and α-syn; the PD group demonstrated weaker SGK1 expression and stronger α-syn expression than the control group. Immunoblotting analysis showed that Na+/K+ pump ATPase α1 expression levels were significantly increased in the PD group. In SW480 cells with SGK1 knockdown using SGK1 siRNA, decreasing SGK1 levels corresponded with significant increases in the expression levels of α-syn and ATPase α1. These results suggest that SGK1 significantly regulates Na+/K+ pump ATPase, influencing the relationship between electrolyte balance and fecal formation in the PD mouse model. Gastrointestinal disorders are some of the major prodromal symptoms of PD. Therefore, modulating SGK1 expression could be an important strategy for controlling PD.
Collapse
Affiliation(s)
- Min Hyung Seo
- Department of Meridian and Acupoint, College of Korean Medicine, Sang Ji University, Wonju 26339, Republic of Korea; (M.H.S.); (D.K.)
| | - Dasom Kwon
- Department of Meridian and Acupoint, College of Korean Medicine, Sang Ji University, Wonju 26339, Republic of Korea; (M.H.S.); (D.K.)
| | - Soo-Hwan Kim
- Division of Biological Science and Technology, Yonsei University, 1 Yonseidae-gil, Wonju 26493, Republic of Korea
| | - Sujung Yeo
- Research Institute of Korean Medicine, Sangji University, Wonju 26339, Republic of Korea
| |
Collapse
|
3
|
Heo EJ, Lee Y, Hyung Seo M, Yeo S. Association between SGK1 and α-synuclein in skeletal muscle in an MPTP-induced Parkinson's disease model. Neurosci Lett 2023; 814:137464. [PMID: 37634811 DOI: 10.1016/j.neulet.2023.137464] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2023] [Revised: 08/21/2023] [Accepted: 08/24/2023] [Indexed: 08/29/2023]
Abstract
Parkinson's disease (PD) is a neurodegenerative disease caused by loss of dopaminergic neurons in the substantia nigra and it is known to involve the accumulation of α-synuclein (α-syn), which is a neuroprotein that promotes degeneration of dopaminergic neurons. Serum/glucocorticoid-related kinase 1 (SGK1) is involved in the physiological and pathological processes in neurons. The aim of this study was to examine the relationship between SGK1 and α-syn expression in muscle tissue of a PD model and in C2C12 cells. Western blotting, immunohistochemistry, and immunofluorescence microscopy confirmed reduced SGK1 and increased α-syn expression in skeletal muscle of 1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine (MPTP)-treated mice compared to the control group. To determine the relationship between SGK1 and α-syn, SGK1 small interfering RNA (siRNA) knockdown was performed in C2C12 cells, which showed that suppression of SGK1 levels resulted in increased α-syn expression. The main finding of our study is that reduction of SGK1 expression contributes to the pathogenesis of PD by increasing the expression of α-syn in skeletal muscle of MPTP-treated mice and C2C12 cells. This study confirms that decreased SGK1 induces increased α-syn expression in skeletal muscle, which suggests that maintaining SGK1 expression may improve PD symptoms.
Collapse
Affiliation(s)
- Eun-Jin Heo
- Department of Korean Medicine, Sang Ji University, Wonju, Republic of Korea.
| | - Youngsun Lee
- Department of Korean Medicine, Sang Ji University, Wonju, Republic of Korea.
| | - Min Hyung Seo
- Department of Korean Medicine, Sang Ji University, Wonju, Republic of Korea.
| | - Sujung Yeo
- Department of Korean Medicine, Sang Ji University, Wonju, Republic of Korea; Research Institute of Korean Medicine, Sangji Univeristy. Wonju, Republic of Korea.
| |
Collapse
|
4
|
Jaehne EJ, Antolasic EJ, Creutzberg KC, Begni V, Riva MA, van den Buuse M. Impaired fear memory in a rat model of the Brain-Derived Neurotrophic Factor Val66Met polymorphism is reversed by chronic exercise. Neurobiol Learn Mem 2023; 203:107779. [PMID: 37269900 DOI: 10.1016/j.nlm.2023.107779] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2022] [Revised: 03/08/2023] [Accepted: 05/24/2023] [Indexed: 06/05/2023]
Abstract
The brain-derived neurotrophic factor (BDNF) Val66Met polymorphism is associated with reduced activity-dependent BDNF release in the brain and has been implicated in fear and anxiety disorders, including post-traumatic stress disorder. Exercise has been shown to have benefits in affective disorders but the role of BDNF Val66Met remains unclear. Male and female BDNF Val66Met rats were housed in automated running-wheel cages from weaning while controls were housed in standard cages. During adulthood, all rats underwent standard three-day fear conditioning testing, with three tone/shock pairings on day 1 (acquisition), and extinction learning and memory (40 tones/session) on day 2 and day 3. Expression of BDNF and stress-related genes were measured in the frontal cortex. Extinction testing on day 2 revealed significantly lower freezing in response to initial cue exposure in control Met/Met rats, reflecting impaired fear memory. This deficit was reversed in both male and female Met/Met rats exposed to exercise. There were no genotype effects on acquisition or extinction of fear, however chronic exercise increased freezing in all groups at every stage of testing. Exercise furthermore led to increased expression of Bdnf in the prefrontal cortex of females and its isoforms in both sexes, as well as increased expression of FK506 binding protein 51 (Fkpb5) in females and decreased expression of Serum/glucocorticoid-regulated kinase (Sgk1) in males independent of genotype. These results show that the Met/Met genotype of the Val66Met polymorphism affects fear memory, and that chronic exercise selectively reverses this genotype effect. Chronic exercise also led to an overall increase in freezing in all genotypes which may contribute to results.
Collapse
Affiliation(s)
- Emily J Jaehne
- Department of Psychology, Counselling and Therapy, School of Psychology and Public Health, La Trobe University, Melbourne, Australia
| | - Emily J Antolasic
- Department of Psychology, Counselling and Therapy, School of Psychology and Public Health, La Trobe University, Melbourne, Australia
| | - Kerstin C Creutzberg
- Department of Pharmacological and Biomolecular Sciences, University of Milan, Milan, Italy
| | - Veronica Begni
- Department of Pharmacological and Biomolecular Sciences, University of Milan, Milan, Italy
| | - Marco A Riva
- Department of Pharmacological and Biomolecular Sciences, University of Milan, Milan, Italy; Biological Psychiatry Laboratory, IRCCS Istituto Centro San Giovanni di Dio Fatebenefratelli, Brescia, Italy
| | - Maarten van den Buuse
- Department of Psychology, Counselling and Therapy, School of Psychology and Public Health, La Trobe University, Melbourne, Australia; Department of Pharmacology, University of Melbourne, Melbourne, Australia.
| |
Collapse
|
5
|
Jeon YJ, Park JC, Jang YS, Kim DH, Choi BR, Kim JM, Kim JJ, Han JS. Chemogenetic modulation of the medial prefrontal cortex regulates resistance to acute stress-induced cognitive impairments. Cereb Cortex 2023; 33:4806-4814. [PMID: 36156637 PMCID: PMC10110428 DOI: 10.1093/cercor/bhac381] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2022] [Revised: 08/31/2022] [Accepted: 09/02/2022] [Indexed: 11/14/2022] Open
Abstract
The medial prefrontal cortex (mPFC) has been implicated in regulating resistance to the effects of acute uncontrollable stress. We previously showed that mPFC-lesioned animals exhibit impaired object recognition memory after acute exposure to a brief stress that had no effect in normal animals. Here, we used designer receptors exclusively activated by designer drugs to determine how modulating mPFC activity affects recognition-memory performance under stressful conditions. Specifically, animals with chemogenetic excitation or inhibition of the mPFC underwent either a brief ineffective stress (20-min restraint + 20 tail shocks) or a prolonged effective stress (60-min restraint + 60 tail shocks). Subsequent recognition memory tests showed that animals with chemogenetic mPFC inhibition exposed to brief stress showed impairment in an object recognition memory task, whereas those with chemogenetic mPFC excitation exposed to prolonged stress did not. Thus, the present findings the decreased mPFC activity exacerbates acute stress effects on memory function whereas increased mPFC activity counters these stress effects provide evidence that the mPFC bidirectionally modulates stress resistance.
Collapse
Affiliation(s)
- Yong-Jae Jeon
- Department of Biological Sciences, Konkuk University, Seoul 05029, Republic of Korea
| | - Jung-Cheol Park
- Department of Biological Sciences, Konkuk University, Seoul 05029, Republic of Korea
| | - Yoon-Sun Jang
- Department of Biological Sciences, Konkuk University, Seoul 05029, Republic of Korea
| | - Dong-Hee Kim
- Department of Biological Sciences, Konkuk University, Seoul 05029, Republic of Korea
| | - Bo-Ryoung Choi
- Department of Biological Sciences, Konkuk University, Seoul 05029, Republic of Korea
| | - Jae-Min Kim
- Department of Psychiatry, Chonnam National University Medical School, Gwangju 61669, Republic of Korea
| | - Jeansok J Kim
- Department of Psychology, Program in Neuroscience, University of Washington, Seattle, WA 98195-1525, United States
| | - Jung-Soo Han
- Department of Biological Sciences, Konkuk University, Seoul 05029, Republic of Korea
| |
Collapse
|
6
|
Liu M, Lian B, Lan Z, Sun H, Zhao Y, Sun T, Meng Z, Zhao C, Zhang J. Transcriptomic Profile Identifies Hippocampal Sgk1 as the Key Mediator of Ovarian Estrogenic Regulation on Spatial Learning and Memory and Aβ Accumulation. Neurochem Res 2022; 47:3369-3384. [PMID: 35915371 DOI: 10.1007/s11064-022-03690-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2022] [Revised: 06/14/2022] [Accepted: 07/12/2022] [Indexed: 11/28/2022]
Abstract
Previous studies have shown that ovarian estrogens are involved in the occurrence and pathology of Alzheimer's disease (AD) through regulation on hippocampal synaptic plasticity and spatial memory; however, the underlying mechanisms have not yet been elucidated at the genomic scale. In this study, we established the postmenopausal estrogen-deficient model by ovariectomy (OVX). Then, we used high-throughput Affymetrix Clariom transcriptomics and found 143 differentially expressed genes in the hippocampus of OVX mice with the absolute fold change ≥ 1.5 and P < 0.05. GO analysis showed that the highest enrichment was seen in long-term memory. Combined with the response to steroid hormone enrichment and GeneMANIA network prediction, the serum and glucocorticoid-regulated kinase 1 gene (Sgk1) was found to be the most potent candidate for ovarian estrogenic regulation. Sgk1 overexpression viral vectors (oSgk1) were then constructed and injected into the hippocampus of OVX mice. Morris water maze test revealed that the impaired spatial learning and memory induced by OVX was rescued by Sgk1 overexpression. Additionally, the altered expression of synaptic proteins and actin remodeling proteins and changes in CA1 spine density and synapse density induced by OVX were also significantly reversed by oSgk1. Moreover, the OVX-induced increase in Aβ-producing BACE1 and Aβ and the decrease in insulin degrading enzyme were significantly reversed by oSgk1. The above results show that multiple pathways and genes are involved in ovarian estrogenic regulation of the function of the hippocampus, among which Sgk1 may be a novel potent target against estrogen-sensitive hippocampal dysfunctions, such as Aβ-initiated AD.
Collapse
Affiliation(s)
- Mengying Liu
- The 305 Hospital of PLA, Beijing, 100017, China.,Department of Neurobiology, Army Medical University, Chongqing, 400038, China
| | - Biyao Lian
- Department of Pediatrics, Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, 710004, China.,Department of Human Anatomy and Tissue Embryology, Ningxia Medical University, Yinchuan, 750004, China
| | - Zhen Lan
- Department of Neurobiology, Army Medical University, Chongqing, 400038, China
| | - Huan Sun
- Department of Neurobiology, Army Medical University, Chongqing, 400038, China.,Center for Brain Science, First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, 710061, China
| | - Yangang Zhao
- Department of Neurology, Hainan Hospital of PLA General Hospital, Sanya, 572013, China
| | - Tao Sun
- Department of Neurobiology, Army Medical University, Chongqing, 400038, China
| | - Zhaoyou Meng
- Department of Neurobiology, Army Medical University, Chongqing, 400038, China
| | - Chengjun Zhao
- Department of Human Anatomy and Tissue Embryology, Ningxia Medical University, Yinchuan, 750004, China. .,Medical Sci-Tech Research Center, Ningxia Medical University, Yinchuan, 750004, China.
| | - Jiqiang Zhang
- Department of Neurobiology, Army Medical University, Chongqing, 400038, China.
| |
Collapse
|