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Bao F, Zhao X, You J, Liu Y, Xu Z, Wu Y, Wu Y, Xu Z, Yu L, Li J, Wei Y. Aerobic exercise alleviates skeletal muscle aging in male rats by inhibiting apoptosis via regulation of the Trx system. Exp Gerontol 2024; 194:112523. [PMID: 39025384 DOI: 10.1016/j.exger.2024.112523] [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: 05/08/2024] [Revised: 07/13/2024] [Accepted: 07/15/2024] [Indexed: 07/20/2024]
Abstract
Skeletal muscle aging in rats is a reduction in skeletal muscle mass caused by a decrease in the number or volume of skeletal muscle myofibers. Apoptosis has been recognized to play a key role in accelerating the process of skeletal muscle aging in rats. The thioredoxin (Trx) system is a widely expressed oxidoreductase system that controls the cellular reduction/oxidation state and has both potent anti-free radical damage and important pro-growth and apoptosis inhibitory functions. Previous studies have shown that exercise delays skeletal muscle aging. However, it is unclear whether exercise attenuates skeletal muscle aging via the Trx system. Therefore, the present study used the Trx system as an entry point to explore the effect of aerobic exercise to improve skeletal muscle aging in rats and its possible mechanisms, and to provide a theoretical basis for exercise to delay skeletal muscle aging in rats. It was shown that aerobic exercise in senescent rats resulted in increased gastrocnemius index, decreased body weight, increased endurance, decreased skeletal muscle cell apoptosis, increased activity and protein expression of the Trx system, and decreased expression of p38 and ASK1. Based on these findings, we conclude that 10 weeks of aerobic exercise may enhance the anti-apoptotic effect of Trx by up-regulating Trx and Trx reductase (TR) protein expression, which in turn increases Trx activity in rat skeletal muscle, and ultimately alleviates apoptosis in senescent skeletal muscle cells.
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Affiliation(s)
- Fenmiao Bao
- College of Physical Education, Taiyuan University of Technology, Taiyuan, Shanxi 030024, China
| | - Xiaoqin Zhao
- College of Physical Education, Taiyuan University of Technology, Taiyuan, Shanxi 030024, China.
| | - Jiaqi You
- College of Physical Education, Taiyuan University of Technology, Taiyuan, Shanxi 030024, China
| | - Yiyao Liu
- College of Physical Education, Taiyuan University of Technology, Taiyuan, Shanxi 030024, China
| | - Zheng Xu
- College of Physical Education, Taiyuan University of Technology, Taiyuan, Shanxi 030024, China
| | - Yuqing Wu
- College of Physical Education, Taiyuan University of Technology, Taiyuan, Shanxi 030024, China
| | - Yufeng Wu
- College of Physical Education, Taiyuan University of Technology, Taiyuan, Shanxi 030024, China
| | - Zujie Xu
- College of Physical Education, Taiyuan University of Technology, Taiyuan, Shanxi 030024, China
| | - Liang Yu
- School of Sport Science, Beijing Sport University, Beijing 100084, China
| | - Junping Li
- School of Sport Science, Beijing Sport University, Beijing 100084, China
| | - Yan Wei
- College of Biomedical Engineering, Taiyuan University of Technology, Taiyuan, Shanxi 030024, China
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Nirmala FS, Lee H, Kim YI, Hahm JH, Seo HD, Kim M, Jung CH, Ahn J. Exercise-induced signaling activation by Chrysanthemum zawadskii and its active compound, linarin, ameliorates age-related sarcopenia through Sestrin 1 regulation. PHYTOMEDICINE : INTERNATIONAL JOURNAL OF PHYTOTHERAPY AND PHYTOPHARMACOLOGY 2024; 129:155695. [PMID: 38728922 DOI: 10.1016/j.phymed.2024.155695] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/14/2024] [Revised: 04/17/2024] [Accepted: 04/29/2024] [Indexed: 05/12/2024]
Abstract
BACKGROUND Exercise is an effective strategy to prevent sarcopenia, but high physical inactivity in the elderly requires alternative therapeutic approaches. Exercise mimetics are therapeutic compounds that simulate the beneficial effects of exercise on skeletal muscles. However, the toxicity and adverse effects of exercise mimetics raise serious concerns. PURPOSE We aimed to search novel plant-based alternatives to activate exercise induced-signaling. METHODS We used open databases and luciferase assays to identify plant-derived alternatives to activate exercise-induced signaling and compared its efficacy to mild intensity continuous training (MICT) in aged C57BL/6 mice. The nineteen-month-old mice were either fed an experimental diet supplemented with the isolated alternative or subjected to MICT for up to 21 mo of age. RESULTS Our analysis revealed that Chrysanthemum zawadskii Herbich var latillobum (Maxim.) Kitamura (CZH), a medicinal plant rich in linarin, is a novel activator of peroxisome proliferator-activated receptor δ (PPARδ) and estrogen-related receptor γ (ERRγ), key regulators of exercise-induced positive effects on muscles. CZH supplementation ameliorated the loss of muscle function and mass, and increased PPARδ and ERRγ expression in mouse muscles. CZH also improved mitochondrial functions and proteostasis in aged mice, similar to MICT. Furthermore, CZH and linarin induced the activation of Sestrin 1, a key mediator of exercise benefits, in muscle. Silencing Sestrin 1 negated the increase in myogenesis and mitochondrial respiration by CZH and linarin in primary myoblasts from old mice. CONCLUSION Our findings suggest the potential of CZH as a novel plant-derived alternative to activate exercise-induced signaling for preventing sarcopenia in sedentary older adults. This could offer a safer therapeutic option for sarcopenia treatment.
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Affiliation(s)
- Farida S Nirmala
- Department of Food Biotechnology, University of Science and Technology, Daejeon, South Korea; Research Group of Aging and Metabolism, Korea Food Research Institute, Wanju-gun, South Korea
| | - Hyunjung Lee
- Research Group of Aging and Metabolism, Korea Food Research Institute, Wanju-gun, South Korea
| | - Young-In Kim
- Research Group of Aging and Metabolism, Korea Food Research Institute, Wanju-gun, South Korea
| | - Jeong-Hoon Hahm
- Research Group of Aging and Metabolism, Korea Food Research Institute, Wanju-gun, South Korea
| | - Hyo-Deok Seo
- Research Group of Aging and Metabolism, Korea Food Research Institute, Wanju-gun, South Korea
| | - Minjung Kim
- Research Group of Personalized Diet, Korea Food Research Institute, Wanju-gun, South Korea
| | - Chang Hwa Jung
- Department of Food Biotechnology, University of Science and Technology, Daejeon, South Korea; Research Group of Aging and Metabolism, Korea Food Research Institute, Wanju-gun, South Korea
| | - Jiyun Ahn
- Department of Food Biotechnology, University of Science and Technology, Daejeon, South Korea; Research Group of Aging and Metabolism, Korea Food Research Institute, Wanju-gun, South Korea.
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Liu D, Wang S, Liu S, Wang Q, Che X, Wu G. Frontiers in sarcopenia: Advancements in diagnostics, molecular mechanisms, and therapeutic strategies. Mol Aspects Med 2024; 97:101270. [PMID: 38583268 DOI: 10.1016/j.mam.2024.101270] [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: 10/28/2023] [Revised: 03/05/2024] [Accepted: 03/19/2024] [Indexed: 04/09/2024]
Abstract
The onset of sarcopenia is intimately linked with aging, posing significant implications not only for individual patient quality of life but also for the broader societal healthcare framework. Early and accurate identification of sarcopenia and a comprehensive understanding of its mechanistic underpinnings and therapeutic targets paramount to addressing this condition effectively. This review endeavors to present a cohesive overview of recent advancements in sarcopenia research and diagnosis. We initially delve into the contemporary diagnostic criteria, specifically referencing the European Working Group on Sarcopenia in Older People (EWGSOP) 2 and Asian Working Group on Sarcopenia (AWGS) 2019 benchmarks. Additionally, we elucidate comprehensive assessment techniques for muscle strength, quantity, and physical performance, highlighting tools such as grip strength, chair stand test, dual-energy X-ray Absorptiometry (DEXA), bioelectrical impedance analysis (BIA), gait speed, and short physical performance battery (SPPB), while also discussing their inherent advantages and limitations. Such diagnostic advancements pave the way for early identification and unequivocal diagnosis of sarcopenia. Proceeding further, we provide a deep-dive into sarcopenia's pathogenesis, offering a thorough examination of associated signaling pathways like the Myostatin, AMP-activated protein kinase (AMPK), insulin/IGF-1 Signaling (IIS), and the nuclear factor kappa-light-chain-enhancer of activated B cells (NF-κB) pathways. Each pathway's role in sarcopenia mediation is detailed, underscoring potential therapeutic target avenues. From a mechanistic perspective, the review also underscores the pivotal role of mitochondrial dysfunction in sarcopenia, emphasizing elements such as mitochondrial oxidative overload, mitochondrial biogenesis, and mitophagy, and highlighting their therapeutic significance. At last, we capture recent strides made in sarcopenia treatment, ranging from nutritional and exercise interventions to potential pharmacological and supplementation strategies. In sum, this review meticulously synthesizes the latest scientific developments in sarcopenia, aiming to enhance diagnostic precision in clinical practice and provide comprehensive insights into refined mechanistic targets and innovative therapeutic interventions, ultimately contributing to optimized patient care and advancements in the field.
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Affiliation(s)
- Dequan Liu
- Department of Urology, The First Affiliated Hospital of Dalian Medical University, Dalian, 116011, Liaoning, China
| | - Shijin Wang
- Department of Urology, The First Affiliated Hospital of Dalian Medical University, Dalian, 116011, Liaoning, China
| | - Shuang Liu
- Department of Urology, The First Affiliated Hospital of Dalian Medical University, Dalian, 116011, Liaoning, China
| | - Qifei Wang
- Department of Urology, The First Affiliated Hospital of Dalian Medical University, Dalian, 116011, Liaoning, China.
| | - Xiangyu Che
- Department of Urology, The First Affiliated Hospital of Dalian Medical University, Dalian, 116011, Liaoning, China.
| | - Guangzhen Wu
- Department of Urology, The First Affiliated Hospital of Dalian Medical University, Dalian, 116011, Liaoning, China.
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Liu Z, Guo Y, Zheng C. Type 2 diabetes mellitus related sarcopenia: a type of muscle loss distinct from sarcopenia and disuse muscle atrophy. Front Endocrinol (Lausanne) 2024; 15:1375610. [PMID: 38854688 PMCID: PMC11157032 DOI: 10.3389/fendo.2024.1375610] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/24/2024] [Accepted: 04/05/2024] [Indexed: 06/11/2024] Open
Abstract
Muscle loss is a significant health concern, particularly with the increasing trend of population aging, and sarcopenia has emerged as a common pathological process of muscle loss in the elderly. Currently, there has been significant progress in the research on sarcopenia, including in-depth analysis of the mechanisms underlying sarcopenia caused by aging and the development of corresponding diagnostic criteria, forming a relatively complete system. However, as research on sarcopenia progresses, the concept of secondary sarcopenia has also been proposed. Due to the incomplete understanding of muscle loss caused by chronic diseases, there are various limitations in epidemiological, basic, and clinical research. As a result, a comprehensive concept and diagnostic system have not yet been established, which greatly hinders the prevention and treatment of the disease. This review focuses on Type 2 Diabetes Mellitus (T2DM)-related sarcopenia, comparing its similarities and differences with sarcopenia and disuse muscle atrophy. The review show significant differences between the three muscle-related issues in terms of pathological changes, epidemiology and clinical manifestations, etiology, and preventive and therapeutic strategies. Unlike sarcopenia, T2DM-related sarcopenia is characterized by a reduction in type I fibers, and it differs from disuse muscle atrophy as well. The mechanism involving insulin resistance, inflammatory status, and oxidative stress remains unclear. Therefore, future research should further explore the etiology, disease progression, and prognosis of T2DM-related sarcopenia, and develop targeted diagnostic criteria and effective preventive and therapeutic strategies to better address the muscle-related issues faced by T2DM patients and improve their quality of life and overall health.
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Affiliation(s)
- Zhenchao Liu
- Institute of Integrative Medicine, Qingdao University, Qingdao, Shandong, China
| | - Yunliang Guo
- Institute of Integrative Medicine, Qingdao University, Qingdao, Shandong, China
| | - Chongwen Zheng
- Department of Neurology, The 2 Affiliated Hospital of Fujian University of Traditional Chinese Medicine, Fuzhou, Fujian, China
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Rejeki PS, Pranoto A, Widiatmaja DM, Utami DM, Izzatunnisa N, Sugiharto, Lesmana R, Halim S. Combined Aerobic Exercise with Intermittent Fasting Is Effective for Reducing mTOR and Bcl-2 Levels in Obese Females. Sports (Basel) 2024; 12:116. [PMID: 38786985 PMCID: PMC11126026 DOI: 10.3390/sports12050116] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2024] [Revised: 04/07/2024] [Accepted: 04/15/2024] [Indexed: 05/25/2024] Open
Abstract
The integration of combined aerobic exercise and intermittent fasting (IF) has emerged as a strategy for the prevention and management of obesity, including its associated health issues such as age-related metabolic diseases. This study aimed to examine the potential of combined aerobic exercise and IF as a preventative strategy against cellular senescence by targeting mTOR and Bcl-2 levels in obese females. A total of 30 obese women, aged 23.56 ± 1.83 years, body fat percentage (FAT) 45.21 ± 3.73% (very high category), BMI 30.09 ± 3.74 kg/m2 were recruited and participated in three different types of interventions: intermittent fasting (IF), exercise (EXG), and a combination of intermittent fasting and exercise (IFEXG). The intervention program was carried out 5x/week for 2 weeks. We examined mTOR and Bcl-2 levels using ELISA kits. Statistical analysis used the one-way ANOVA test and continued with Tukey's HSD post hoc test, with a significance level of 5%. The study results showed that a combination of aerobic exercise and IF significantly decreased mTOR levels (-1.26 ± 0.79 ng/mL) compared to the control group (-0.08 ± 1.33 ng/mL; p ≤ 0.05). However, combined aerobic exercise and IF did not affect Bcl-2 levels significantly (-0.07 ± 0.09 ng/mL) compared to the control group (0.01 ± 0.17 ng/mL, p ≥ 0.05). The IF-only group, exercise-only group, and combined group all showed a significant decrease in body weight and fat mass compared to the control group (p ≤ 0.05). However, the combined aerobic exercise and IF program had a significant effect in reducing the total percentage of body fat and fat mass compared to the IF-only group (p ≤ 0.05). Therefore, it was concluded that the combined intermittent fasting and exercise group (IFEXG) undertook the most effective intervention of the three in terms of preventing cellular senescence, as demonstrated by decreases in the mTOR level, body weight, and fat mass. However, the IFEXG did not present reduced Bcl-2 levels.
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Affiliation(s)
- Purwo Sri Rejeki
- Physiology Division, Department of Medical Physiology and Biochemistry, Faculty of Medicine, Universitas Airlangga, Surabaya 60132, East Java, Indonesia
| | - Adi Pranoto
- Doctoral Program of Medical Science, Faculty of Medicine, Universitas Airlangga, Surabaya 60132, East Java, Indonesia;
| | - Deandra Maharani Widiatmaja
- Medical Program, Faculty of Medicine, Universitas Airlangga, Surabaya 60132, East Java, Indonesia; (D.M.W.); (D.M.U.); (N.I.)
| | - Dita Mega Utami
- Medical Program, Faculty of Medicine, Universitas Airlangga, Surabaya 60132, East Java, Indonesia; (D.M.W.); (D.M.U.); (N.I.)
| | - Nabilah Izzatunnisa
- Medical Program, Faculty of Medicine, Universitas Airlangga, Surabaya 60132, East Java, Indonesia; (D.M.W.); (D.M.U.); (N.I.)
| | - Sugiharto
- Department of Sport Science, Faculty of Sport Science, Universitas Negeri Malang, Malang 65145, East Java, Indonesia;
| | - Ronny Lesmana
- Physiology Division, Department of Biomedical Science, Faculty of Medicine, Universitas Padjajaran, Bandung 45363, West Java, Indonesia;
| | - Shariff Halim
- Faculty of Health Sciences, University Technology MARA (UiTM) Pulau Pinang, Bertam Campus, Kepala Batas 13200, Pulau Pinang, Malaysia;
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Lei Y, Gan M, Qiu Y, Chen Q, Wang X, Liao T, Zhao M, Chen L, Zhang S, Zhao Y, Niu L, Wang Y, Zhu L, Shen L. The role of mitochondrial dynamics and mitophagy in skeletal muscle atrophy: from molecular mechanisms to therapeutic insights. Cell Mol Biol Lett 2024; 29:59. [PMID: 38654156 PMCID: PMC11036639 DOI: 10.1186/s11658-024-00572-y] [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: 01/09/2024] [Accepted: 04/04/2024] [Indexed: 04/25/2024] Open
Abstract
Skeletal muscle is the largest metabolic organ of the human body. Maintaining the best quality control and functional integrity of mitochondria is essential for the health of skeletal muscle. However, mitochondrial dysfunction characterized by mitochondrial dynamic imbalance and mitophagy disruption can lead to varying degrees of muscle atrophy, but the underlying mechanism of action is still unclear. Although mitochondrial dynamics and mitophagy are two different mitochondrial quality control mechanisms, a large amount of evidence has indicated that they are interrelated and mutually regulated. The former maintains the balance of the mitochondrial network, eliminates damaged or aged mitochondria, and enables cells to survive normally. The latter degrades damaged or aged mitochondria through the lysosomal pathway, ensuring cellular functional health and metabolic homeostasis. Skeletal muscle atrophy is considered an urgent global health issue. Understanding and gaining knowledge about muscle atrophy caused by mitochondrial dysfunction, particularly focusing on mitochondrial dynamics and mitochondrial autophagy, can greatly contribute to the prevention and treatment of muscle atrophy. In this review, we critically summarize the recent research progress on mitochondrial dynamics and mitophagy in skeletal muscle atrophy, and expound on the intrinsic molecular mechanism of skeletal muscle atrophy caused by mitochondrial dynamics and mitophagy. Importantly, we emphasize the potential of targeting mitochondrial dynamics and mitophagy as therapeutic strategies for the prevention and treatment of muscle atrophy, including pharmacological treatment and exercise therapy, and summarize effective methods for the treatment of skeletal muscle atrophy.
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Affiliation(s)
- Yuhang Lei
- Farm Animal Genetic Resources Exploration and Innovation Key Laboratory of Sichuan Province, Sichuan Agricultural University, Chengdu, 611130, China
- Key Laboratory of Livestock and Poultry Multi-Omics, Ministry of Agriculture and Rural Affairs, College of Animal and Technology, Sichuan Agricultural University, Chengdu, 611130, China
| | - Mailin Gan
- Farm Animal Genetic Resources Exploration and Innovation Key Laboratory of Sichuan Province, Sichuan Agricultural University, Chengdu, 611130, China
- Key Laboratory of Livestock and Poultry Multi-Omics, Ministry of Agriculture and Rural Affairs, College of Animal and Technology, Sichuan Agricultural University, Chengdu, 611130, China
| | - Yanhao Qiu
- Farm Animal Genetic Resources Exploration and Innovation Key Laboratory of Sichuan Province, Sichuan Agricultural University, Chengdu, 611130, China
- Key Laboratory of Livestock and Poultry Multi-Omics, Ministry of Agriculture and Rural Affairs, College of Animal and Technology, Sichuan Agricultural University, Chengdu, 611130, China
| | - Qiuyang Chen
- Farm Animal Genetic Resources Exploration and Innovation Key Laboratory of Sichuan Province, Sichuan Agricultural University, Chengdu, 611130, China
- Key Laboratory of Livestock and Poultry Multi-Omics, Ministry of Agriculture and Rural Affairs, College of Animal and Technology, Sichuan Agricultural University, Chengdu, 611130, China
| | - Xingyu Wang
- Farm Animal Genetic Resources Exploration and Innovation Key Laboratory of Sichuan Province, Sichuan Agricultural University, Chengdu, 611130, China
- Key Laboratory of Livestock and Poultry Multi-Omics, Ministry of Agriculture and Rural Affairs, College of Animal and Technology, Sichuan Agricultural University, Chengdu, 611130, China
| | - Tianci Liao
- Farm Animal Genetic Resources Exploration and Innovation Key Laboratory of Sichuan Province, Sichuan Agricultural University, Chengdu, 611130, China
- Key Laboratory of Livestock and Poultry Multi-Omics, Ministry of Agriculture and Rural Affairs, College of Animal and Technology, Sichuan Agricultural University, Chengdu, 611130, China
| | - Mengying Zhao
- Farm Animal Genetic Resources Exploration and Innovation Key Laboratory of Sichuan Province, Sichuan Agricultural University, Chengdu, 611130, China
- Key Laboratory of Livestock and Poultry Multi-Omics, Ministry of Agriculture and Rural Affairs, College of Animal and Technology, Sichuan Agricultural University, Chengdu, 611130, China
| | - Lei Chen
- Farm Animal Genetic Resources Exploration and Innovation Key Laboratory of Sichuan Province, Sichuan Agricultural University, Chengdu, 611130, China
- Key Laboratory of Livestock and Poultry Multi-Omics, Ministry of Agriculture and Rural Affairs, College of Animal and Technology, Sichuan Agricultural University, Chengdu, 611130, China
| | - Shunhua Zhang
- Farm Animal Genetic Resources Exploration and Innovation Key Laboratory of Sichuan Province, Sichuan Agricultural University, Chengdu, 611130, China
- Key Laboratory of Livestock and Poultry Multi-Omics, Ministry of Agriculture and Rural Affairs, College of Animal and Technology, Sichuan Agricultural University, Chengdu, 611130, China
| | - Ye Zhao
- Farm Animal Genetic Resources Exploration and Innovation Key Laboratory of Sichuan Province, Sichuan Agricultural University, Chengdu, 611130, China
- Key Laboratory of Livestock and Poultry Multi-Omics, Ministry of Agriculture and Rural Affairs, College of Animal and Technology, Sichuan Agricultural University, Chengdu, 611130, China
| | - Lili Niu
- Farm Animal Genetic Resources Exploration and Innovation Key Laboratory of Sichuan Province, Sichuan Agricultural University, Chengdu, 611130, China
- Key Laboratory of Livestock and Poultry Multi-Omics, Ministry of Agriculture and Rural Affairs, College of Animal and Technology, Sichuan Agricultural University, Chengdu, 611130, China
| | - Yan Wang
- Farm Animal Genetic Resources Exploration and Innovation Key Laboratory of Sichuan Province, Sichuan Agricultural University, Chengdu, 611130, China
- Key Laboratory of Livestock and Poultry Multi-Omics, Ministry of Agriculture and Rural Affairs, College of Animal and Technology, Sichuan Agricultural University, Chengdu, 611130, China
| | - Li Zhu
- Farm Animal Genetic Resources Exploration and Innovation Key Laboratory of Sichuan Province, Sichuan Agricultural University, Chengdu, 611130, China.
- Key Laboratory of Livestock and Poultry Multi-Omics, Ministry of Agriculture and Rural Affairs, College of Animal and Technology, Sichuan Agricultural University, Chengdu, 611130, China.
| | - Linyuan Shen
- Farm Animal Genetic Resources Exploration and Innovation Key Laboratory of Sichuan Province, Sichuan Agricultural University, Chengdu, 611130, China.
- Key Laboratory of Livestock and Poultry Multi-Omics, Ministry of Agriculture and Rural Affairs, College of Animal and Technology, Sichuan Agricultural University, Chengdu, 611130, China.
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Gindri Dos Santos B, Maciel August P, Santos Rocha D, Mesquita I, Menegotto M, Stone V, Matté C. Late pregnancy maternal naringin supplementation affects the mitochondria in the cerebellum of Wistar rat offspring via sirtuin 3 and AKT. Int J Dev Neurosci 2024; 84:122-133. [PMID: 38238938 DOI: 10.1002/jdn.10313] [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: 08/20/2023] [Revised: 12/01/2023] [Accepted: 12/24/2023] [Indexed: 04/04/2024] Open
Abstract
Dietary polyphenol consumption is associated with a wide range of neuroprotective effects by improving mitochondrial function and signaling. Consequently, the use of polyphenol supplementation has been investigated as an approach to prevent neurodevelopmental diseases during gestation; however, the data obtained are still very inconclusive, mostly because of the difficulty of choosing the correct doses and period of administration to properly prevent neurodegenerative diseases without undermining normal brain development. Thus, we aimed to evaluate the effect of naringin supplementation during the third week of gestation on mitochondrial health and signaling in the cerebellum of 21-day-old offspring. The offspring born to naringin-supplemented dams displayed higher mitochondrial mass, membrane potential, and superoxide content in the cerebellum without protein oxidative damage. Such alterations were associated with dynamin-related protein 1 (DRP1) and phosphorylated AKT (p-AKT) downregulation, whereas the sirtuin 3 (SIRT3) levels were strongly upregulated. Our findings suggest that high dietary polyphenol supplementation during gestation may reduce mitochondrial fission and affect mitochondrial dynamics even 3 weeks after delivery via SIRT3 and p-AKT. Although the offspring born to naringin dams did not present neurobehavioral defects, the mitochondrial alterations elicited by naringin may potentially interfere during neurodevelopment and need to be further investigated.
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Affiliation(s)
- Bernardo Gindri Dos Santos
- Programa de Pós-Graduação em Ciências Biológicas - Bioquímica, Departamento de Bioquímica, Instituto de Ciências Básicas da Saúde, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil
| | - Pauline Maciel August
- Departamento de Bioquímica, Instituto de Ciências Básicas da Saúde, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil
| | - Débora Santos Rocha
- Departamento de Bioquímica, Instituto de Ciências Básicas da Saúde, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil
| | - Ismael Mesquita
- Programa de Pós-Graduação em Ciências Biológicas - Bioquímica, Departamento de Bioquímica, Instituto de Ciências Básicas da Saúde, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil
| | - Manuela Menegotto
- Departamento de Bioquímica, Instituto de Ciências Básicas da Saúde, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil
| | - Vinícius Stone
- Programa de Pós-Graduação em Ciências Biológicas - Bioquímica, Departamento de Bioquímica, Instituto de Ciências Básicas da Saúde, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil
| | - Cristiane Matté
- Programa de Pós-Graduação em Ciências Biológicas - Bioquímica, Departamento de Bioquímica, Instituto de Ciências Básicas da Saúde, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil
- Departamento de Bioquímica, Instituto de Ciências Básicas da Saúde, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil
- Programa de Pós-graduação em Ciências Biológicas - Fisiologia, Instituto de Ciências Básicas da Saúde, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil
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8
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Botella J, Shaw CS, Bishop DJ. Autophagy and Exercise: Current Insights and Future Research Directions. Int J Sports Med 2024; 45:171-182. [PMID: 37582398 DOI: 10.1055/a-2153-9258] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/17/2023]
Abstract
Autophagy is a cellular process by which proteins and organelles are degraded inside the lysosome. Exercise is known to influence the regulation of autophagy in skeletal muscle. However, as gold standard techniques to assess autophagy flux in vivo are restricted to animal research, important gaps remain in our understanding of how exercise influences autophagy activity in humans. Using available datasets, we show how the gene expression profile of autophagy receptors and ATG8 family members differ between human and mouse skeletal muscle, providing a potential explanation for their differing exercise-induced autophagy responses. Furthermore, we provide a comprehensive view of autophagy regulation following exercise in humans by summarizing human transcriptomic and phosphoproteomic datasets that provide novel targets of potential relevance. These newly identified phosphorylation sites may provide an explanation as to why both endurance and resistance exercise lead to an exercise-induced reduction in LC3B-II, while possibly divergently regulating autophagy receptors, and, potentially, autophagy flux. We also provide recommendations to use ex vivo autophagy flux assays to better understand the influence of exercise, and other stimuli, on autophagy regulation in humans. This review provides a critical overview of the field and directs researchers towards novel research areas that will improve our understanding of autophagy regulation following exercise in humans.
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Affiliation(s)
- Javier Botella
- Metabolic Research Unit, School of Medicine and Institute for Mental and Physical Health and Clinical Translation (IMPACT), Deakin University, Waurn Ponds, Victoria, Australia
| | - Christopher S Shaw
- Institute for Physical Activity and Nutrition (IPAN), School of Exercise and Nutrition Sciences, Deakin University, Geelong, 3216, VIC, Australia
| | - David J Bishop
- Institute for Health and Sport (iHeS), Victoria University, Melbourne, Australia
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9
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Cui M, Chen F, Shao L, Wei C, Zhang W, Sun W, Wang J. Mesenchymal stem cells and ferroptosis: Clinical opportunities and challenges. Heliyon 2024; 10:e25251. [PMID: 38356500 PMCID: PMC10864896 DOI: 10.1016/j.heliyon.2024.e25251] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2023] [Revised: 01/19/2024] [Accepted: 01/23/2024] [Indexed: 02/16/2024] Open
Abstract
Objective This review discusses recent experimental and clinical findings related to ferroptosis, with a focus on the role of MSCs. Therapeutic efficacy and current applications of MSC-based ferroptosis therapies are also discussed. Background Ferroptosis is a type of programmed cell death that differs from apoptosis, necrosis, and autophagy; it involves iron metabolism and is related to the pathogenesis of many diseases, such as Parkinson's disease, cancers, and liver diseases. In recent years, the use of mesenchymal stem cells (MSCs) and MSC-derived exosomes has become a trend in cell-free therapies. MSCs are a heterogeneous cell population isolated from a diverse range of human tissues that exhibit immunomodulatory functions, regulate cell growth, and repair damaged tissues. In addition, accumulating evidence indicates that MSC-derived exosomes play an important role, mainly by carrying a variety of bioactive substances that affect recipient cells. The potential mechanism by which MSC-derived exosomes mediate the effects of MSCs on ferroptosis has been previously demonstrated. This review provides the first overview of the current knowledge on ferroptosis, MSCs, and MSC-derived exosomes and highlights the potential application of MSCs exosomes in the treatment of ferroptotic conditions. It summarizes their mechanisms of action and techniques for enhancing MSC functionality. Results obtained from a large number of experimental studies revealed that both local and systemic administration of MSCs effectively suppressed ferroptosis in injured hepatocytes, neurons, cardiomyocytes, and nucleus pulposus cells and promoted the survival and regeneration of injured organs. Methods We reviewed the role of ferroptosis in related tissues and organs, focusing on its characteristics in different diseases. Additionally, the effects of MSCs and MSC-derived exosomes on ferroptosis-related pathways in various organs were reviewed, and the mechanism of action was elucidated. MSCs were shown to improve the disease course by regulating ferroptosis.
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Affiliation(s)
- Mengling Cui
- Department of Radiology, Second Affiliated Hospital of Kunming Medical University, Kunming, Yunnan, 650101, PR China
| | - Fukun Chen
- Department of Radiology, Kunming Medical University & the Third Affiliated Hospital, Kunming, Yunnan, 650101, PR China
| | - Lishi Shao
- Department of Radiology, Second Affiliated Hospital of Kunming Medical University, Kunming, Yunnan, 650101, PR China
| | - Chanyan Wei
- Department of Radiology, Second Affiliated Hospital of Kunming Medical University, Kunming, Yunnan, 650101, PR China
| | - Weihu Zhang
- Department of Radiology, Second Affiliated Hospital of Kunming Medical University, Kunming, Yunnan, 650101, PR China
| | - Wenmei Sun
- Department of Radiology, Second Affiliated Hospital of Kunming Medical University, Kunming, Yunnan, 650101, PR China
| | - Jiaping Wang
- Department of Radiology, Second Affiliated Hospital of Kunming Medical University, Kunming, Yunnan, 650101, PR China
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Kang X, Qian J, Shi YX, Bian XT, Zhang LD, Li GM, Wang LT, Zhao J, Dong ZY, Yang MM, Chen YJN, Tang KL, Miao HM. Exercise-induced Musclin determines the fate of fibro-adipogenic progenitors to control muscle homeostasis. Cell Stem Cell 2024; 31:212-226.e7. [PMID: 38232727 DOI: 10.1016/j.stem.2023.12.011] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2023] [Revised: 12/12/2023] [Accepted: 12/13/2023] [Indexed: 01/19/2024]
Abstract
The effects of exercise on fibro-adipogenic progenitors (FAPs) are unclear, and the direct molecular link is still unknown. In this study, we reveal that exercise reduces the frequency of FAPs and attenuates collagen deposition and adipose formation in injured or disused muscles through Musclin. Mechanistically, Musclin inhibits FAP proliferation and promotes apoptosis in FAPs by upregulating FILIP1L. Chromatin immunoprecipitation (ChIP)-qPCR confirms that FoxO3a is the transcription factor of FILIP1L. In addition, the Musclin/FILIP1L pathway facilitates the phagocytosis of apoptotic FAPs by macrophages through downregulating the expression of CD47. Genetic ablation of FILIP1L in FAPs abolishes the effects of exercise or Musclin on FAPs and the benefits on the reduction of fibrosis and fatty infiltration. Overall, exercise forms a microenvironment of myokines in muscle and prevents the abnormal accumulation of FAPs in a Musclin/FILIP1L-dependent manner. The administration of exogenous Musclin exerts a therapeutic effect, demonstrating a potential therapeutic approach for muscle atrophy or acute muscle injury.
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Affiliation(s)
- Xia Kang
- Department of Pathophysiology, College of High Altitude Military Medicine, Army Medical University, Chongqing 400038, China; Pancreatic Injury and Repair Key Laboratory of Sichuan Province, The General Hospital of Western Theater Command, Chengdu 610000, Sichuan, China.
| | - Jin Qian
- Department of Pathophysiology, College of High Altitude Military Medicine, Army Medical University, Chongqing 400038, China
| | - You-Xing Shi
- Department of Sports Medicine Center, State Key Laboratory of Trauma, Burn and Combined Injury, First Affiliated Hospital of Army Medical University, Chongqing 400038, China
| | - Xu-Ting Bian
- Department of Sports Medicine Center, State Key Laboratory of Trauma, Burn and Combined Injury, First Affiliated Hospital of Army Medical University, Chongqing 400038, China
| | - Li-Dan Zhang
- Center for Medical Epigenetics, School of Basic Medical Sciences, Chongqing Medical University, Chongqing 400038, China
| | - Gao-Ming Li
- Department of Health Statistics, Army Medical University, Chongqing 400038, China
| | - Li-Ting Wang
- Biomedical Analysis Center, Army Medical University, Chongqing 400038, China
| | - Jing Zhao
- Biomedical Analysis Center, Army Medical University, Chongqing 400038, China
| | - Zhen-Yu Dong
- Department of Sports Medicine Center, State Key Laboratory of Trauma, Burn and Combined Injury, First Affiliated Hospital of Army Medical University, Chongqing 400038, China
| | - Meng-Meng Yang
- Center for Medical Epigenetics, School of Basic Medical Sciences, Chongqing Medical University, Chongqing 400038, China
| | - Yu-Jia-Nan Chen
- Department of Sports Medicine Center, State Key Laboratory of Trauma, Burn and Combined Injury, First Affiliated Hospital of Army Medical University, Chongqing 400038, China
| | - Kang-Lai Tang
- Department of Sports Medicine Center, State Key Laboratory of Trauma, Burn and Combined Injury, First Affiliated Hospital of Army Medical University, Chongqing 400038, China.
| | - Hong-Ming Miao
- Department of Pathophysiology, College of High Altitude Military Medicine, Army Medical University, Chongqing 400038, China; Jinfeng Laboratory, Chongqing 401329, China.
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Kyun S, Kim J, Hwang D, Jang I, Park HY, Lim K. Lactate administration induces skeletal muscle synthesis by influencing Akt/mTOR and MuRF1 in non-trained mice but not in trained mice. Physiol Rep 2024; 12:e15952. [PMID: 38383135 PMCID: PMC10881281 DOI: 10.14814/phy2.15952] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2023] [Revised: 12/26/2023] [Accepted: 12/26/2023] [Indexed: 02/23/2024] Open
Abstract
The perception regarding lactate has changed over the past decades, and some of its physiological roles have gradually been revealed. However, the effects of exogenous lactate on skeletal muscle synthesis remain unclear. This study aimed to confirm the effects of a 5-week lactate administration and post-exercise lactate administration on skeletal muscle synthesis. Thirty-two Institute of Cancer Research mice were randomly assigned to non-trained + placebo, non-trained + lactate, trained + placebo, and trained + lactate groups. Furthermore, 3 g/kg of lactate or an equivalent volume of saline was immediately administered after exercise training (maximum oxygen uptake: 70%). Lactate administration and/or exercise training was performed 5 days/week for 5 weeks. After the experimental period, it was observed that lactate administration tended to elevate skeletal muscle weight, increased protein kinase B (p < 0.05) and mammalian target of rapamycin (p < 0.05) mRNA levels, and decreased muscle ring-finger protein-1 expression (p < 0.05). Lactate administration after exercise training significantly enhanced plantaris muscle weight; however, it had no additional effects on most signaling factors. This study demonstrated that a 5-week lactate administration could stimulate skeletal muscle synthesis, and lactate administration after exercise training may provide additional effects, such as increasing skeletal muscle.
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Affiliation(s)
- Sunghwan Kyun
- Department of Sports Medicine and Science in Graduated School, Konkuk University, Seoul, Korea
| | - Jisu Kim
- Department of Sports Medicine and Science in Graduated School, Konkuk University, Seoul, Korea
- Physical Activity and Performance Institute (PAPI), Konkuk University, Seoul, Korea
| | - Deunsol Hwang
- Department of Sports Medicine and Science in Graduated School, Konkuk University, Seoul, Korea
| | - Inkwon Jang
- Department of Sports Medicine and Science in Graduated School, Konkuk University, Seoul, Korea
| | - Hun-Young Park
- Department of Sports Medicine and Science in Graduated School, Konkuk University, Seoul, Korea
- Physical Activity and Performance Institute (PAPI), Konkuk University, Seoul, Korea
| | - Kiwon Lim
- Department of Sports Medicine and Science in Graduated School, Konkuk University, Seoul, Korea
- Physical Activity and Performance Institute (PAPI), Konkuk University, Seoul, Korea
- Department of Physical Education, Konkuk University, Seoul, Korea
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12
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Soares JP, Cardoso R, Almeida V, Pereira AF, Silva AM, Mota MP. The Impact of 8 Weeks of Combined Physical Exercise Training on SIRT3 and mTOR in Lymphocytes, and on Lipid Peroxidation. Healthcare (Basel) 2024; 12:350. [PMID: 38338233 PMCID: PMC10855888 DOI: 10.3390/healthcare12030350] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2023] [Revised: 01/15/2024] [Accepted: 01/17/2024] [Indexed: 02/12/2024] Open
Abstract
The sirtuins (SIRT) protein family and the mechanistic/mammalian target of rapamycin (mTOR) are intracellular molecules that have been involved in the regulation of several biological processes, as well as in various aging-related processes. This pilot study, in small scale, aimed to analyze the effects of an 8-week physical exercise program on SIRT3 and mTOR levels in lymphocytes, as well as on lipid peroxidation in middle aged and older men. A total of 9 participants aged between 56 and 73 years were enrolled in an 8-week physical exercise program comprising cardiovascular and high-intensity interval training. The program involved three sessions per week, each lasting 45-60 min, conducted on non-consecutive days. Tests were conducted before and after the experimental period (pre- and post-training). Assessments included a vertical jump, 20 m velocity, ball throwing, and an aerobic capacity test. Lipid peroxidation (MDA) was measured in plasma as an oxidative stress biomarker. Additionally, sirtuin 3 (SIRT3/β-actin) and mTOR (mTOR/β-actin) levels were measured in isolated lymphocytes extracted from venous blood. Following the exercise training period, our results demonstrated a significant improvement in aerobic capacity (pre-training: 615.4 ± 45.3 m; post-training: 687.2 ± 34.6 m; t = -2.521; p = 0.012) and 20 m velocity (pre-training: 4.6 ± 0.5 s; post-training: 4.3 ± 0.3 s; t = -2.023; p = 0.04). Concerning blood variables, there was a significant decrease in mTOR levels (pre-training: 0.857 ± 0.593; post-training: 0.214 ± 0.097; t = -2.547; p = 0.011), while no changes were observed in SIRT3 (pre-training: 0.608 ± 0.404; post-training: 0.516 ± 0.390; t = 0.533; p = 0.594) and MDA (pre-training: 8420 ± 4615; post-training: 8800 ± 3163; t = -0.533; p = 0.594). The notable reduction in mTOR levels in lymphocytes following the 8-week physical exercise program suggests a potential role of exercise in modulating immune cell dynamics, particularly in middle-aged and older individuals. Furthermore, the exercise regimen resulted in improvements in physical function, including enhanced aerobic capacity and walking velocity.
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Affiliation(s)
- Jorge Pinto Soares
- Research Centre in Sports Sciences, Health, and Human Development (CIDESD), 5001-801 Vila Real, Portugal;
- Department of Sport of Science Exercise and Health, School of Life and Environmental Sciences (ECVA), University of Trás-os-Montes and Alto Douro (UTAD), 5000-801 Vila Real, Portugal
| | - Ricardo Cardoso
- Centre for the Research and Technology of Agro-Environmental and Biological Sciences (CITAB), University of Trás-os-Montes and Alto Douro (UTAD), 5000-801 Vila Real, Portugal; (R.C.); (V.A.)
| | - Vanessa Almeida
- Centre for the Research and Technology of Agro-Environmental and Biological Sciences (CITAB), University of Trás-os-Montes and Alto Douro (UTAD), 5000-801 Vila Real, Portugal; (R.C.); (V.A.)
| | | | - Amélia M. Silva
- Centre for the Research and Technology of Agro-Environmental and Biological Sciences (CITAB), University of Trás-os-Montes and Alto Douro (UTAD), 5000-801 Vila Real, Portugal; (R.C.); (V.A.)
- Department of Biology and Environment, University of Trás-os-Montes and Alto Douro (UTAD), 5000-801 Vila Real, Portugal
| | - Maria Paula Mota
- Research Centre in Sports Sciences, Health, and Human Development (CIDESD), 5001-801 Vila Real, Portugal;
- Department of Sport of Science Exercise and Health, School of Life and Environmental Sciences (ECVA), University of Trás-os-Montes and Alto Douro (UTAD), 5000-801 Vila Real, Portugal
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Kato N, Kimoto A, Zhang P, Bumrungkit C, Karunaratne S, Yanaka N, Kumrungsee T. Relationship of Low Vitamin B6 Status with Sarcopenia, Frailty, and Mortality: A Narrative Review. Nutrients 2024; 16:177. [PMID: 38202006 PMCID: PMC10780671 DOI: 10.3390/nu16010177] [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: 12/14/2023] [Revised: 01/02/2024] [Accepted: 01/03/2024] [Indexed: 01/12/2024] Open
Abstract
Marginal vitamin B6 (B6) deficiency is a widespread global concern. Inadequate B6 levels have been linked to an increased risk of age-related chronic diseases such as cardiovascular diseases and cancers. In recent years, the growing concern over sarcopenia (the age-related loss of muscle mass and strength) and frailty (a decline in physiological resilience and increased vulnerability associated with aging) is particularly relevant due to the emergence of super-aged societies in developed countries. Notably, among the thirty-one studies included in this review, twenty-five showed a significant association of B6 status with sarcopenia, frailty, and all-cause mortality in adults (p < 0.05), while six showed no association. Emerging studies have suggested novel mechanisms underlying this association. These mechanisms involve P2X7 receptor-mediated NLRP3 inflammasome signaling, AMPK signaling, PD-L1 signaling, and satellite cell-mediated myogenesis. Furthermore, the modulation of PLP-dependent enzymes due to B6 deficiency is associated with impaired metabolic processes, affecting energy utilization, imidazole peptide production, and hydrogen sulfide production, as well as the kynurenine pathway, all of which play vital roles in skeletal muscle health and pathophysiology. This narrative review provides an up-to-date assessment of our current understanding of the potential role of nutritional B6 status in combating sarcopenia, frailty, and mortality.
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Affiliation(s)
- Norihisa Kato
- Graduate School of Integrated Sciences for Life, Hiroshima University, Higashi-Hiroshima 739-8528, Japan; (C.B.); (S.K.); (N.Y.)
| | - Akiko Kimoto
- Faculty of Health of Sciences, Hiroshima Shudo University, Hiroshima 731-3166, Japan;
| | - Peipei Zhang
- State Key Laboratory of Cellular Stress Biology, School of Life Science, Xiamen University, Xiamen 361102, China;
- School of Medicine, Xiamen University, Xiamen 361102, China
| | - Chanikan Bumrungkit
- Graduate School of Integrated Sciences for Life, Hiroshima University, Higashi-Hiroshima 739-8528, Japan; (C.B.); (S.K.); (N.Y.)
| | - Sajith Karunaratne
- Graduate School of Integrated Sciences for Life, Hiroshima University, Higashi-Hiroshima 739-8528, Japan; (C.B.); (S.K.); (N.Y.)
| | - Noriyuki Yanaka
- Graduate School of Integrated Sciences for Life, Hiroshima University, Higashi-Hiroshima 739-8528, Japan; (C.B.); (S.K.); (N.Y.)
| | - Thanutchaporn Kumrungsee
- Graduate School of Integrated Sciences for Life, Hiroshima University, Higashi-Hiroshima 739-8528, Japan; (C.B.); (S.K.); (N.Y.)
- Graduate School of Innovation and Practice for Smart Society, Hiroshima University, Higashi-Hiroshima 739-8528, Japan
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14
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Chowdhury SG, Karmakar P. Revealing the role of epigenetic and post-translational modulations of autophagy proteins in the regulation of autophagy and cancer: a therapeutic approach. Mol Biol Rep 2023; 51:3. [PMID: 38063905 DOI: 10.1007/s11033-023-08961-w] [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: 08/17/2023] [Accepted: 10/26/2023] [Indexed: 12/18/2023]
Abstract
Autophagy is a process that is characterized by the destruction of redundant components and the removal of dysfunctional ones to maintain cellular homeostasis. Autophagy dysregulation has been linked to various illnesses, such as neurodegenerative disorders and cancer. The precise transcription of the genes involved in autophagy is regulated by a network of epigenetic factors. This includes histone modifications and histone-modifying enzymes. Epigenetics is a broad category of heritable, reversible changes in gene expression that do not include changes to DNA sequences, such as chromatin remodeling, histone modifications, and DNA methylation. In addition to affecting the genes that are involved in autophagy, the epigenetic machinery can also alter the signals that control this process. In cancer, autophagy plays a dual role by preventing the development of tumors on one hand and this process may suppress tumor progression. This may be the control of an oncogene that prevents autophagy while, conversely, tumor suppression may promote it. The development of new therapeutic strategies for autophagy-related disorders could be initiated by gaining a deeper understanding of its intricate regulatory framework. There is evidence showing that certain machineries and regulators of autophagy are affected by post-translational and epigenetic modifications, which can lead to alterations in the levels of autophagy and these changes can then trigger disease or affect the therapeutic efficacy of drugs. The goal of this review is to identify the regulatory pathways associated with post-translational and epigenetic modifications of different proteins in autophagy which may be the therapeutic targets shortly.
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Affiliation(s)
| | - Parimal Karmakar
- Department of Life Science and Biotechnology, Jadavpur University, Kolkata, 700032, India.
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15
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She M, Huang M, Zhang J, Yan Y, Zhou L, Zhang M, Yang Y, Wang D. Astragulus embranaceus (Fisch.) Bge-Dioscorea opposita Thunb herb pair ameliorates sarcopenia in senile type 2 diabetes mellitus through Rab5a/mTOR-mediated mitochondrial dysfunction. JOURNAL OF ETHNOPHARMACOLOGY 2023; 317:116737. [PMID: 37295571 DOI: 10.1016/j.jep.2023.116737] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/21/2023] [Revised: 05/15/2023] [Accepted: 06/04/2023] [Indexed: 06/12/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE The combination of Astragulus embranaceus (Fisch.) Bge (Huangqi) and Dioscorea opposita Thunb (Shanyao) are one of the most widely accepted herb pairs in traditional Chinese medicine prescriptions for treating sarcopenia. However, the mechanisms underlying the combination of these herbs for anti-sarcopenia treatment are not yet fully understood. AIM OF THE STUDY To investigate the potential effect of the Astragulus embranaceus (Fisch.) Bge and Dioscorea opposita Thunb herb pair (Ast-Dio) on sarcopenia in mice that have been induced with senile type 2 diabetes mellitus, as well as to explore the underlying mechanisms related to the Rab5a/mTOR signaling pathway and mitochondrial quality control. MATERIALS AND METHODS Network pharmacology was utilized to identify the main active ingredients of Ast-Dio and potential therapeutic targets for sarcopenia. Gene Ontology function and Kyoto Encyclopedia of Genes and Genomes pathway enrichment analyses were conducted to explore the underlying mechanisms of Ast-Dio in treating sarcopenia. The high-performance liquid chromatography method coupled with triple-quadrupole tandem mass spectrometry was developed to quantify the major constituents of Ast-Dio. Male C57/BL6 mice, aged 12 months, induced with type 2 diabetes mellitus via streptozotocin were divided into three groups for 8 weeks: the model group, Ast-Dio treatment group (7.8 g/kg), and metformin treatment group (100 mg/kg). Normal control groups included mice aged 3 and 12 months, respectively. The study monitored changes in fasting blood glucose levels, grip strength, and body weight during 8 weeks of intragastric administration. Liver and kidney function in mice was evaluated by measuring the levels of serum creatinine, alanine transaminase, and aspartate transaminase. Skeletal muscle mass condition was evaluated by muscle weight, and hematoxylin and eosin staining. Protein and mRNA expressions related to muscle atrophy, mitochondrial quality control, and the Rab5a/mTOR signaling pathway were detected using immunofluorescence staining, immunohistochemical staining, Western blotting, and quantitative real-time polymerase chain reaction. In addition, transmission electron microscopy was employed to investigate the condition of mitochondria in the groups. RESULTS Through the prediction analysis of network pharmacology, we identified mTOR as one of the primary targets for Ast-Dio therapy of sarcopenia. Gene Ontology functional enrichment analysis revealed that mitochondrial control quality is crucial in the treatment of sarcopenia with Ast-Dio. Our findings showed that senile type 2 diabetes mellitus induced muscle mass loss and a reduction in grip strength, both of which were dramatically restored by Ast-Dio treatment. Notably, Ast-Dio increased Myogenin expression while decreasing Atrogin-1 and MuRF-1 expression. Additionally, Ast-Dio activated Rab5a/mTOR and its downstream effector AMPK. Moreover, Ast-Dio modulated mitochondrial quality control by decreasing Mitofusin-2 expression while increasing the expression of TFAM, PGC-1α, and MFF. CONCLUSIONS Our results suggest that Ast-Dio treatment may alleviate sarcopenia in mice with senile type 2 diabetes mellitus through its effects on the Rab5a/mTOR pathway and mitochondrial quality control.
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Affiliation(s)
- Meiling She
- Department of Traditional Chinese Medicine, Shenzhen Hospital, Southern Medical University, No. 1333, Xinhu Road, Bao 'an District, Shenzhen, Guangdong, 518000, China; School of Traditional Chinese Medicine, Southern Medical University, No. 1023-1063, Shatai South Road, Baiyun District, Guangzhou, Guangdong, 510000, China
| | - Minna Huang
- Department of Traditional Chinese Medicine, Shenzhen Hospital, Southern Medical University, No. 1333, Xinhu Road, Bao 'an District, Shenzhen, Guangdong, 518000, China; School of Traditional Chinese Medicine, Southern Medical University, No. 1023-1063, Shatai South Road, Baiyun District, Guangzhou, Guangdong, 510000, China
| | - Jing Zhang
- Department of Traditional Chinese Medicine, Shenzhen Hospital, Southern Medical University, No. 1333, Xinhu Road, Bao 'an District, Shenzhen, Guangdong, 518000, China
| | - Yan Yan
- Department of Traditional Chinese Medicine, Shenzhen Hospital, Southern Medical University, No. 1333, Xinhu Road, Bao 'an District, Shenzhen, Guangdong, 518000, China; School of Traditional Chinese Medicine, Southern Medical University, No. 1023-1063, Shatai South Road, Baiyun District, Guangzhou, Guangdong, 510000, China
| | - Lingli Zhou
- The First Clinical Medical College, Southern Medical University, No. 1023-1063, Shatai South Road, Baiyun District, Guangzhou, Guangdong, 510000, China
| | - Meng Zhang
- Department of Traditional Chinese Medicine, Shenzhen Hospital, Southern Medical University, No. 1333, Xinhu Road, Bao 'an District, Shenzhen, Guangdong, 518000, China; School of Traditional Chinese Medicine, Southern Medical University, No. 1023-1063, Shatai South Road, Baiyun District, Guangzhou, Guangdong, 510000, China.
| | - Yajun Yang
- Department of Pharmacology, Guangdong Key Laboratory for R&D of Natural Drug, Guangdong Medical University, No. 2, Wenming East Road, Xiashan District, Zhanjiang City, 524000, China.
| | - Dongtao Wang
- Department of Traditional Chinese Medicine, Shenzhen Hospital, Southern Medical University, No. 1333, Xinhu Road, Bao 'an District, Shenzhen, Guangdong, 518000, China; School of Traditional Chinese Medicine, Southern Medical University, No. 1023-1063, Shatai South Road, Baiyun District, Guangzhou, Guangdong, 510000, China.
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Maiese K. Cornerstone Cellular Pathways for Metabolic Disorders and Diabetes Mellitus: Non-Coding RNAs, Wnt Signaling, and AMPK. Cells 2023; 12:2595. [PMID: 37998330 PMCID: PMC10670256 DOI: 10.3390/cells12222595] [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: 09/21/2023] [Revised: 10/31/2023] [Accepted: 11/07/2023] [Indexed: 11/25/2023] Open
Abstract
Metabolic disorders and diabetes (DM) impact more than five hundred million individuals throughout the world and are insidious in onset, chronic in nature, and yield significant disability and death. Current therapies that address nutritional status, weight management, and pharmacological options may delay disability but cannot alter disease course or functional organ loss, such as dementia and degeneration of systemic bodily functions. Underlying these challenges are the onset of aging disorders associated with increased lifespan, telomere dysfunction, and oxidative stress generation that lead to multi-system dysfunction. These significant hurdles point to the urgent need to address underlying disease mechanisms with innovative applications. New treatment strategies involve non-coding RNA pathways with microRNAs (miRNAs) and circular ribonucleic acids (circRNAs), Wnt signaling, and Wnt1 inducible signaling pathway protein 1 (WISP1) that are dependent upon programmed cell death pathways, cellular metabolic pathways with AMP-activated protein kinase (AMPK) and nicotinamide, and growth factor applications. Non-coding RNAs, Wnt signaling, and AMPK are cornerstone mechanisms for overseeing complex metabolic pathways that offer innovative treatment avenues for metabolic disease and DM but will necessitate continued appreciation of the ability of each of these cellular mechanisms to independently and in unison influence clinical outcome.
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Affiliation(s)
- Kenneth Maiese
- Cellular and Molecular Signaling, New York, NY 10022, USA
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17
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Maiese K. The impact of aging and oxidative stress in metabolic and nervous system disorders: programmed cell death and molecular signal transduction crosstalk. Front Immunol 2023; 14:1273570. [PMID: 38022638 PMCID: PMC10663950 DOI: 10.3389/fimmu.2023.1273570] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2023] [Accepted: 10/23/2023] [Indexed: 12/01/2023] Open
Abstract
Life expectancy is increasing throughout the world and coincides with a rise in non-communicable diseases (NCDs), especially for metabolic disease that includes diabetes mellitus (DM) and neurodegenerative disorders. The debilitating effects of metabolic disorders influence the entire body and significantly affect the nervous system impacting greater than one billion people with disability in the peripheral nervous system as well as with cognitive loss, now the seventh leading cause of death worldwide. Metabolic disorders, such as DM, and neurologic disease remain a significant challenge for the treatment and care of individuals since present therapies may limit symptoms but do not halt overall disease progression. These clinical challenges to address the interplay between metabolic and neurodegenerative disorders warrant innovative strategies that can focus upon the underlying mechanisms of aging-related disorders, oxidative stress, cell senescence, and cell death. Programmed cell death pathways that involve autophagy, apoptosis, ferroptosis, and pyroptosis can play a critical role in metabolic and neurodegenerative disorders and oversee processes that include insulin resistance, β-cell function, mitochondrial integrity, reactive oxygen species release, and inflammatory cell activation. The silent mating type information regulation 2 homolog 1 (Saccharomyces cerevisiae) (SIRT1), AMP activated protein kinase (AMPK), and Wnt1 inducible signaling pathway protein 1 (WISP1) are novel targets that can oversee programmed cell death pathways tied to β-nicotinamide adenine dinucleotide (NAD+), nicotinamide, apolipoprotein E (APOE), severe acute respiratory syndrome (SARS-CoV-2) exposure with coronavirus disease 2019 (COVID-19), and trophic factors, such as erythropoietin (EPO). The pathways of programmed cell death, SIRT1, AMPK, and WISP1 offer exciting prospects for maintaining metabolic homeostasis and nervous system function that can be compromised during aging-related disorders and lead to cognitive impairment, but these pathways have dual roles in determining the ultimate fate of cells and organ systems that warrant thoughtful insight into complex autofeedback mechanisms.
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Affiliation(s)
- Kenneth Maiese
- Innovation and Commercialization, National Institutes of Health, Bethesda, MD, United States
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18
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Xie G, Jin H, Mikhail H, Pavel V, Yang G, Ji B, Lu B, Li Y. Autophagy in sarcopenia: Possible mechanisms and novel therapies. Biomed Pharmacother 2023; 165:115147. [PMID: 37473679 DOI: 10.1016/j.biopha.2023.115147] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2023] [Revised: 06/23/2023] [Accepted: 07/07/2023] [Indexed: 07/22/2023] Open
Abstract
With global population aging, age-related diseases, especially sarcopenia, have attracted much attention in recent years. Characterized by low muscle strength, low muscle quantity or quality and low physical performance, sarcopenia is one of the major factors associated with an increased risk of falls and disability. Much effort has been made to understand the cellular biological and physiological mechanisms underlying sarcopenia. Autophagy is an important cellular self-protection mechanism that relies on lysosomes to degrade misfolded proteins and damaged organelles. Research designed to obtain new insight into human diseases from the autophagic aspect has been carried out and has made new progress, which encourages relevant studies on the relationship between autophagy and sarcopenia. Autophagy plays a protective role in sarcopenia by modulating the regenerative capability of satellite cells, relieving oxidative stress and suppressing the inflammatory response. This review aims to reveal the specific interaction between sarcopenia and autophagy and explore possible therapies in hopes of encouraging more specific research in need and unlocking novel promising therapies to ameliorate sarcopenia.
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Affiliation(s)
- Guangyang Xie
- Department of Orthopedics, Xiangya Hospital of Central South University, Changsha 410008, Hunan, China; Xiangya School of Medicine, Central South University, Changsha 410008, Hunan, China
| | - Hongfu Jin
- Department of Orthopedics, Xiangya Hospital of Central South University, Changsha 410008, Hunan, China; National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha 410008, Hunan, China
| | - Herasimenka Mikhail
- Republican Scientific and Practical Center of Traumatology and Orthopedics, Minsk 220024, Belarus
| | - Volotovski Pavel
- Republican Scientific and Practical Center of Traumatology and Orthopedics, Minsk 220024, Belarus
| | - Guang Yang
- Department of Orthopedics, Xiangya Hospital of Central South University, Changsha 410008, Hunan, China; National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha 410008, Hunan, China
| | - Bingzhou Ji
- Department of Orthopedics, Xiangya Hospital of Central South University, Changsha 410008, Hunan, China; National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha 410008, Hunan, China
| | - Bangbao Lu
- Department of Orthopedics, Xiangya Hospital of Central South University, Changsha 410008, Hunan, China; National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha 410008, Hunan, China.
| | - Yusheng Li
- Department of Orthopedics, Xiangya Hospital of Central South University, Changsha 410008, Hunan, China; National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha 410008, Hunan, China.
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19
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Oh HJ, Jin H, Lee BY. Hesperidin Ameliorates Sarcopenia through the Regulation of Inflammaging and the AKT/mTOR/FoxO3a Signaling Pathway in 22-26-Month-Old Mice. Cells 2023; 12:2015. [PMID: 37566094 PMCID: PMC10417333 DOI: 10.3390/cells12152015] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2023] [Revised: 08/01/2023] [Accepted: 08/03/2023] [Indexed: 08/12/2023] Open
Abstract
Faced with a globally aging society, the maintenance of health and quality of life in older people is very important. The age-related loss of muscle mass and strength, known as sarcopenia, severely reduces quality of life and increases the risks of various diseases. In this study, we investigated the inhibitory effect of hesperidin (HES) on inflammaging, with the intention of evaluating its potential use as a treatment for sarcopenia. We studied 22-26-month-old mice, corresponding to humans aged ≥70 years, with aging-related sarcopenia, and young mice aged 3-6 months. The daily administration of HES for 8 weeks resulted in greater muscle mass and strength and increased the fiber size of the old mice. HES also restored the immune homeostasis that had been disrupted by aging, such as the imbalance in M1/M2 macrophage ratio. In addition, we found that HES ameliorated the sarcopenia by regulating AKT/mammalian target of rapamycin/forkhead box 3a signaling through an increase in insulin-like growth factor (IGF)-1 expression in the old mice. Therefore, HES represents a promising candidate inhibitor of sarcopenia in older people, and its effects are achieved through the maintenance of immune homeostasis.
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Affiliation(s)
| | | | - Boo-Yong Lee
- Department of Food Science and Biotechnology, College of Life Science, CHA University, Seongnam 13488, Gyeonggi, Republic of Korea; (H.-J.O.); (H.J.)
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20
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Maiese K. Innovative therapeutic strategies for cardiovascular disease. EXCLI JOURNAL 2023; 22:690-715. [PMID: 37593239 PMCID: PMC10427777 DOI: 10.17179/excli2023-6306] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Figures] [Subscribe] [Scholar Register] [Received: 07/03/2023] [Accepted: 07/24/2023] [Indexed: 08/19/2023]
Abstract
As a significant non-communicable disease, cardiovascular disease is the leading cause of death for both men and women, comprises almost twenty percent of deaths in most racial and ethnic groups, can affect greater than twenty-five million individuals worldwide over the age of twenty, and impacts global economies with far-reaching financial challenges. Multiple factors can affect the onset of cardiovascular disease that include high serum cholesterol levels, elevated blood pressure, tobacco consumption and secondhand smoke exposure, poor nutrition, physical inactivity, obesity, and concurrent diabetes mellitus. Yet, addressing any of these factors cannot completely eliminate the onset or progression of cardiovascular disorders. Novel strategies are necessary to target underlying cardiovascular disease mechanisms. The silent mating type information regulation 2 homolog 1 (Saccharomyces cerevisiae) (SIRT1), a histone deacetylase, can limit cardiovascular injury, assist with stem cell development, oversee metabolic homeostasis through nicotinamide adenine dinucleotide (NAD+) pathways, foster trophic factor protection, and control cell senescence through the modulation of telomere function. Intimately tied to SIRT1 pathways are mammalian forkhead transcription factors (FoxOs) which can modulate cardiac disease to reduce oxidative stress, repair microcirculation disturbances, and reduce atherogenesis through pathways of autophagy, apoptosis, and ferroptosis. AMP activated protein kinase (AMPK) also is critical among these pathways for the oversight of cardiac cellular metabolism, insulin sensitivity, mitochondrial function, inflammation, and the susceptibility to viral infections such as severe acute respiratory syndrome coronavirus that can impact cardiovascular disease. Yet, the relationship among these pathways is both intricate and complex and requires detailed insight to successfully translate these pathways into clinical care for cardiovascular disorders.
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Affiliation(s)
- Kenneth Maiese
- Cellular and Molecular Signaling, New York, New York 10022
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21
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Maiese K. Cognitive Impairment in Multiple Sclerosis. Bioengineering (Basel) 2023; 10:871. [PMID: 37508898 PMCID: PMC10376413 DOI: 10.3390/bioengineering10070871] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2023] [Revised: 07/19/2023] [Accepted: 07/21/2023] [Indexed: 07/30/2023] Open
Abstract
Almost three million individuals suffer from multiple sclerosis (MS) throughout the world, a demyelinating disease in the nervous system with increased prevalence over the last five decades, and is now being recognized as one significant etiology of cognitive loss and dementia. Presently, disease modifying therapies can limit the rate of relapse and potentially reduce brain volume loss in patients with MS, but unfortunately cannot prevent disease progression or the onset of cognitive disability. Innovative strategies are therefore required to address areas of inflammation, immune cell activation, and cell survival that involve novel pathways of programmed cell death, mammalian forkhead transcription factors (FoxOs), the mechanistic target of rapamycin (mTOR), AMP activated protein kinase (AMPK), the silent mating type information regulation 2 homolog 1 (Saccharomyces cerevisiae) (SIRT1), and associated pathways with the apolipoprotein E (APOE-ε4) gene and severe acute respiratory syndrome coronavirus (SARS-CoV-2). These pathways are intertwined at multiple levels and can involve metabolic oversight with cellular metabolism dependent upon nicotinamide adenine dinucleotide (NAD+). Insight into the mechanisms of these pathways can provide new avenues of discovery for the therapeutic treatment of dementia and loss in cognition that occurs during MS.
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Affiliation(s)
- Kenneth Maiese
- Cellular and Molecular Signaling, New York, NY 10022, USA
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22
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Ren Y, Wu Y, He W, Tian Y, Zhao X. SMOC2 plays a role in heart failure via regulating TGF-β1/Smad3 pathway-mediated autophagy. Open Med (Wars) 2023; 18:20230752. [PMID: 37465345 PMCID: PMC10350896 DOI: 10.1515/med-2023-0752] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2022] [Revised: 06/20/2023] [Accepted: 06/21/2023] [Indexed: 07/20/2023] Open
Abstract
Heart failure (HF) is a major global cause of morbidity and mortality. This study aimed to elucidate the role of secreted protein acidic and rich in cysteine-related modular calcium-binding protein 2 (SMOC2) in HF development and its underlying mechanism. Using a rat HF model, SMOC2 expression was examined and then knocked down via transfection to assess its impact on cardiac function and damage. The study also evaluated the effects of SMOC2 knockdown on autophagy-related molecules and the transforming growth factor beta 1 (TGF-β1)/SMAD family member 3 (Smad3) signaling pathway. Intraperitoneal injection of the TGF-β agonist (SRI-011381) into the HF rat model was performed to explore the SMOC2-TGF-β1/Smad3 pathway relationship. SMOC2 expression was elevated in HF rats, while its downregulation improved cardiac function and damage. SMOC2 knockdown reversed alterations in the LC3-II/I ratio, Beclin-1, and p62 levels in HF rats. Through transmission electron microscope, we observed that SMOC2 knockdown restored autophagosome levels. Furthermore, SMOC2 downregulation inhibited the TGF-β1/Smad3 signaling pathway, which was counteracted by SRI-011381. In conclusion, SMOC2 knockdown inhibits HF development by modulating TGF-β1/Smad3 signaling-mediated autophagy, suggesting its potential as a therapeutic target for HF.
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Affiliation(s)
- Yu Ren
- Scientific Research Department, Inner Mongolia People’s Hospital, Inner Mongolia Autonomous Region, Hohhot, 010017, China
| | - Yun Wu
- Cardiology Department, Inner Mongolia People’s Hospital, Inner Mongolia Autonomous Region, Hohhot, 010017, China
- Clinical Medical Research Center in Cardiovascular Diseases, Inner Mongolia People’s Hospital, Inner Mongolia Autonomous Region, Hohhot, 010017, China
| | - Wenshuai He
- Cardiology Department, Inner Mongolia People’s Hospital, Inner Mongolia Autonomous Region, Hohhot, 010017, China
- Clinical Medical Research Center in Cardiovascular Diseases, Inner Mongolia People’s Hospital, Inner Mongolia Autonomous Region, Hohhot, 010017, China
| | - Yingjie Tian
- Cardiology Department, Inner Mongolia People’s Hospital, Inner Mongolia Autonomous Region, Hohhot, 010017, China
- Clinical Medical Research Center in Cardiovascular Diseases, Inner Mongolia People’s Hospital, Inner Mongolia Autonomous Region, Hohhot, 010017, China
| | - Xingsheng Zhao
- Cardiology Department, Inner Mongolia People’s Hospital, Inner Mongolia Autonomous Region, Hohhot, 010017, China
- Clinical Medical Research Center in Cardiovascular Diseases, Inner Mongolia People’s Hospital, Inner Mongolia Autonomous Region, Hohhot, 010017, China
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23
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Zhu Y, Zhou X, Zhu A, Xiong S, Xie J, Bai Z. Advances in exercise to alleviate sarcopenia in older adults by improving mitochondrial dysfunction. Front Physiol 2023; 14:1196426. [PMID: 37476691 PMCID: PMC10355810 DOI: 10.3389/fphys.2023.1196426] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2023] [Accepted: 06/23/2023] [Indexed: 07/22/2023] Open
Abstract
Sarcopenia is a chronic degenerative disease affecting primarily older adults. A growing aging population is gradually increasing the number of patients suffering from sarcopenia, placing increasing financial pressure on patients' families and society in general. There is a strong link between mitochondrial dysfunction and sarcopenia pathogenesis. As a result, treating sarcopenia by improving mitochondrial dysfunction is an effective strategy. Numerous studies have demonstrated that exercise has a positive effect on mitochondrial dysfunction when treating sarcopenia. Exercise promotes mitochondrial biogenesis and mitochondrial fusion/division to add new mitochondria or improve dysfunctional mitochondria while maintaining mitochondrial calcium homeostasis, mitochondrial antioxidant defense system, and mitochondrial autophagy to promote normal mitochondrial function. Furthermore, exercise can reduce mitochondrial damage caused by aging by inhibiting mitochondrial oxidative stress, mitochondrial DNA damage, and mitochondrial apoptosis. Exercise effectiveness depends on several factors, including exercise duration, exercise intensity, and exercise form. Therefore, Moderate-intensity exercise over 4 weeks potentially mitigates sarcopenia in older adults by ameliorating mitochondrial dysfunction. HIIT has demonstrated potential as a viable approach to addressing sarcopenia in aged rats. However, further investigation is required to validate its efficacy in treating sarcopenia in older adults.
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Affiliation(s)
| | | | | | | | | | - Zhenmin Bai
- School of Sports Medicine and Rehabilitation, Beijing Sport University, Beijing, China
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24
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Galasso L, Cappella A, Mulè A, Castelli L, Ciorciari A, Stacchiotti A, Montaruli A. Polyamines and Physical Activity in Musculoskeletal Diseases: A Potential Therapeutic Challenge. Int J Mol Sci 2023; 24:9798. [PMID: 37372945 DOI: 10.3390/ijms24129798] [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: 05/10/2023] [Revised: 06/02/2023] [Accepted: 06/04/2023] [Indexed: 06/29/2023] Open
Abstract
Autophagy dysregulation is commonplace in the pathogenesis of several invalidating diseases, such as musculoskeletal diseases. Polyamines, as spermidine and spermine, are small aliphatic cations essential for cell growth and differentiation, with multiple antioxidant, anti-inflammatory, and anti-apoptotic effects. Remarkably, they are emerging as natural autophagy regulators with strong anti-aging effects. Polyamine levels were significantly altered in the skeletal muscles of aged animals. Therefore, supplementation of spermine and spermidine may be important to prevent or treat muscle atrophy. Recent in vitro and in vivo experimental studies indicate that spermidine reverses dysfunctional autophagy and stimulates mitophagy in muscles and heart, preventing senescence. Physical exercise, as polyamines, regulates skeletal muscle mass inducing proper autophagy and mitophagy. This narrative review focuses on the latest evidence regarding the efficacy of polyamines and exercise as autophagy inducers, alone or coupled, in alleviating sarcopenia and aging-dependent musculoskeletal diseases. A comprehensive description of overall autophagic steps in muscle, polyamine metabolic pathways, and effects of the role of autophagy inducers played by both polyamines and exercise has been presented. Although literature shows few data in regard to this controversial topic, interesting effects on muscle atrophy in murine models have emerged when the two "autophagy-inducers" were combined. We hope these findings, with caution, can encourage researchers to continue investigating in this direction. In particular, if these novel insights could be confirmed in further in vivo and clinical studies, and the two synergic treatments could be optimized in terms of dose and duration, then polyamine supplementation and physical exercise might have a clinical potential in sarcopenia, and more importantly, implications for a healthy lifestyle in the elderly population.
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Affiliation(s)
- Letizia Galasso
- Department of Biomedical Sciences for Health, University of Milan, 20133 Milan, Italy
| | - Annalisa Cappella
- Department of Biomedical Sciences for Health, University of Milan, 20133 Milan, Italy
- U.O. Laboratorio di Morfologia Umana Applicata, I.R.C.C.S. Policlinico San Donato, San Donato Milanese, 20097 Milan, Italy
| | - Antonino Mulè
- Department of Biomedical Sciences for Health, University of Milan, 20133 Milan, Italy
| | - Lucia Castelli
- Department of Biomedical Sciences for Health, University of Milan, 20133 Milan, Italy
| | - Andrea Ciorciari
- Department of Biomedical Sciences for Health, University of Milan, 20133 Milan, Italy
| | - Alessandra Stacchiotti
- Department of Biomedical Sciences for Health, University of Milan, 20133 Milan, Italy
- U.O. Laboratorio di Morfologia Umana Applicata, I.R.C.C.S. Policlinico San Donato, San Donato Milanese, 20097 Milan, Italy
| | - Angela Montaruli
- Department of Biomedical Sciences for Health, University of Milan, 20133 Milan, Italy
- I.R.C.C.S. Ospedale Galeazzi-Sant'Ambrogio, 20157 Milan, Italy
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25
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Maiese K. Cellular Metabolism: A Fundamental Component of Degeneration in the Nervous System. Biomolecules 2023; 13:816. [PMID: 37238686 PMCID: PMC10216724 DOI: 10.3390/biom13050816] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2023] [Revised: 05/05/2023] [Accepted: 05/10/2023] [Indexed: 05/28/2023] Open
Abstract
It is estimated that, at minimum, 500 million individuals suffer from cellular metabolic dysfunction, such as diabetes mellitus (DM), throughout the world. Even more concerning is the knowledge that metabolic disease is intimately tied to neurodegenerative disorders, affecting both the central and peripheral nervous systems as well as leading to dementia, the seventh leading cause of death. New and innovative therapeutic strategies that address cellular metabolism, apoptosis, autophagy, and pyroptosis, the mechanistic target of rapamycin (mTOR), AMP activated protein kinase (AMPK), growth factor signaling with erythropoietin (EPO), and risk factors such as the apolipoprotein E (APOE-ε4) gene and coronavirus disease 2019 (COVID-19) can offer valuable insights for the clinical care and treatment of neurodegenerative disorders impacted by cellular metabolic disease. Critical insight into and modulation of these complex pathways are required since mTOR signaling pathways, such as AMPK activation, can improve memory retention in Alzheimer's disease (AD) and DM, promote healthy aging, facilitate clearance of β-amyloid (Aß) and tau in the brain, and control inflammation, but also may lead to cognitive loss and long-COVID syndrome through mechanisms that can include oxidative stress, mitochondrial dysfunction, cytokine release, and APOE-ε4 if pathways such as autophagy and other mechanisms of programmed cell death are left unchecked.
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Affiliation(s)
- Kenneth Maiese
- Cellular and Molecular Signaling, New York, NY 10022, USA
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26
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Jung UJ. Sarcopenic Obesity: Involvement of Oxidative Stress and Beneficial Role of Antioxidant Flavonoids. Antioxidants (Basel) 2023; 12:antiox12051063. [PMID: 37237929 DOI: 10.3390/antiox12051063] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2023] [Revised: 04/25/2023] [Accepted: 05/05/2023] [Indexed: 05/28/2023] Open
Abstract
Sarcopenic obesity, which refers to concurrent sarcopenia and obesity, is characterized by decreased muscle mass, strength, and performance along with abnormally excessive fat mass. Sarcopenic obesity has received considerable attention as a major health threat in older people. However, it has recently become a health problem in the general population. Sarcopenic obesity is a major risk factor for metabolic syndrome and other complications such as osteoarthritis, osteoporosis, liver disease, lung disease, renal disease, mental disease and functional disability. The pathogenesis of sarcopenic obesity is multifactorial and complicated, and it is caused by insulin resistance, inflammation, hormonal changes, decreased physical activity, poor diet and aging. Oxidative stress is a core mechanism underlying sarcopenic obesity. Some evidence indicates a protective role of antioxidant flavonoids in sarcopenic obesity, although the precise mechanisms remain unclear. This review summarizes the general characteristics and pathophysiology of sarcopenic obesity and focuses on the role of oxidative stress in sarcopenic obesity. The potential benefits of flavonoids in sarcopenic obesity have also been discussed.
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Affiliation(s)
- Un Ju Jung
- Department of Food Science and Nutrition, Pukyong National University, 45 Yongso-ro, Nam-gu, Busan 48513, Republic of Korea
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27
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Li C, Guo Z, Liu F, An P, Wang M, Yang D, Tang Q. PCSK6 attenuates cardiac dysfunction in doxorubicin-induced cardiotoxicity by regulating autophagy. Free Radic Biol Med 2023; 203:114-128. [PMID: 37061139 DOI: 10.1016/j.freeradbiomed.2023.04.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/25/2022] [Revised: 04/07/2023] [Accepted: 04/08/2023] [Indexed: 04/17/2023]
Abstract
Doxorubicin (DOX) is a chemotherapeutic drug widely used in the field of cancer, but its side effects on the heart hinder its clinical application. In cardiac injury caused by DOX, apoptosis and oxidative stress are both involved in cardiac damage, and autophagy is also one of the key responses. Both apoptosis and oxidative stress interact with autophagy. Proper promotion of autophagy effectively protects the myocardium and blocks cardiac injury. DOX mainly acts downstream of the autophagic flow and hinders the degradation process of autophagolysosomes, resulting in abnormal accumulation of autophagolysosomes in cells, which can prevent the timely removal of harmful substances and disrupt the normal function of cells. Proprotein convertase subtilisin/kexin type 6 (PCSK6) is involved in the occurrence and development of various cardiovascular diseases, blood pressure regulation and the inflammatory response, but its role in DOX is still unclear. Here, we constructed cardiac PCSK6-overexpressing mice by injecting AAV9-PCSK6. Both in vivo and in vitro experiments confirmed that overexpression of PCSK6 effectively protected cardiac function, inhibited apoptosis and oxidative stress. We focused on the effect of PCSK6 overexpression on autophagy. We have detected an increase in autophagosomes production and a decrease in autophagolysosomes accumulation. This suggests that PCSK6 promotes the level of autophagy, while possibly acting on the sites where DOX inhibits degradation, so that the autophagic flux inhibited by DOX is restored and the degradation process of autophagolysosomes is restored. The effect of PCSK6 was dependent on FOXO3a, which promoted the nuclear translocation of Forkhead box O3 (FOXO3a), and Sirtuin 1 (SIRT1) regulated the expression of FOXO3a. When SIRT1 was inhibited, the protective effect of PCSK6 was diminished. In conclusion, overexpression of PCSK6 exerts a protective effect through SIRT1/FOXO3a in cardiac injury induced by DOX, suggesting that PCSK6 may be a therapeutic target for DOX cardiomyopathy.
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Affiliation(s)
- Chenfei Li
- Department of Cardiology, Renmin Hospital of Wuhan University, Wuhan, 430060, PR China; Hubei Key Laboratory of Metabolic and Chronic Diseases, Wuhan, PR China.
| | - Zhen Guo
- Department of Cardiology, Renmin Hospital of Wuhan University, Wuhan, 430060, PR China; Hubei Key Laboratory of Metabolic and Chronic Diseases, Wuhan, PR China.
| | - Fangyuan Liu
- Department of Cardiology, Renmin Hospital of Wuhan University, Wuhan, 430060, PR China; Hubei Key Laboratory of Metabolic and Chronic Diseases, Wuhan, PR China
| | - Peng An
- Department of Cardiology, Renmin Hospital of Wuhan University, Wuhan, 430060, PR China; Hubei Key Laboratory of Metabolic and Chronic Diseases, Wuhan, PR China
| | - Mingyu Wang
- Department of Cardiology, Renmin Hospital of Wuhan University, Wuhan, 430060, PR China; Hubei Key Laboratory of Metabolic and Chronic Diseases, Wuhan, PR China
| | - Dan Yang
- Department of Cardiology, Renmin Hospital of Wuhan University, Wuhan, 430060, PR China; Hubei Key Laboratory of Metabolic and Chronic Diseases, Wuhan, PR China
| | - Qizhu Tang
- Department of Cardiology, Renmin Hospital of Wuhan University, Wuhan, 430060, PR China; Hubei Key Laboratory of Metabolic and Chronic Diseases, Wuhan, PR China.
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28
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Cho C, Ji M, Cho E, Yi S, Kim JG, Lee S. Chronic voluntary wheel running exercise ameliorates metabolic dysfunction via PGC-1α expression independently of FNDC5/irisin pathway in high fat diet-induced obese mice. J Physiol Sci 2023; 73:6. [PMID: 37041517 DOI: 10.1186/s12576-023-00864-6] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2022] [Accepted: 03/28/2023] [Indexed: 04/13/2023]
Abstract
Exercise is an effective intervention to ameliorate metabolic diseases including obesity and insulin resistance, but the mechanisms involved in the metabolic amelioration have not yet been fully elucidated. This study aimed to determine whether AMPK-SIRT1-PGC-1α-FNDC5/Irisin-UCP1 expression is activated and whether metabolic dysfunction is ameliorated by chronic voluntary wheel running (VWR) in high-fat diet (HFD) induced obese mice. C57BL6J mice were randomly assigned into three groups at the age of 7 weeks for 10 weeks: normal chow diet (CON) group, HFD group, and HFD + VWR group. Chronic VWR ameliorates metabolic parameters and leads to increases in the expression of PGC-1α in the gastrocnemius muscle in HFD-induced obese mice. In contrast, the expression of AMPKα, SIRT1, and FNDC5, or circulating irisin levels did not lead to alteration. Improvement of metabolic health was partly mediated via PGC-1α expression by chronic VWR, but not FNDC5/Irisin pathway in HFD-induced obese mice.
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Affiliation(s)
- Chaeeun Cho
- Department of Human Movement Science, Graduate School, Incheon National University, Incheon, Republic of Korea
| | - Minje Ji
- Department of Human Movement Science, Graduate School, Incheon National University, Incheon, Republic of Korea
| | - Eunhee Cho
- Department of Human Movement Science, Graduate School, Incheon National University, Incheon, Republic of Korea
| | - Seon Yi
- Department of Life Science, College of Life Sciences and Bioengineering, Incheon National University, Incheon, Republic of Korea
| | - Jae Geun Kim
- Department of Life Science, College of Life Sciences and Bioengineering, Incheon National University, Incheon, Republic of Korea
| | - Sewon Lee
- Division of Sport Science, College of Arts & Physical Education, Incheon National University, Bldg# 16, Room# 423, (Songdo-Dong) 119 Academy-Ro, Yeonsu-Gu, Incheon, South Korea.
- Sport Science Institute, College of Arts & Physical Education, Incheon National University, Incheon, Republic of Korea.
- Health Promotion Center, College of Arts & Physical Education, Incheon National University, Incheon, Republic of Korea.
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29
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Chen H, Zhang L, Zuo M, Lou X, Liu B, Fu T. Inhibition of apoptosis through AKT-mTOR pathway in ovarian cancer and renal cancer. Aging (Albany NY) 2023; 15:1210-1227. [PMID: 36849137 PMCID: PMC10008491 DOI: 10.18632/aging.204564] [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: 11/23/2022] [Accepted: 02/11/2023] [Indexed: 03/01/2023]
Abstract
OBJECTIVE Ovarian cancer and renal cancer are malignant tumors; however, the relationship between TTK Protein Kinase (TTK), AKT-mTOR pathway and ovarian cancer, renal cancer remains unclear. METHODS Download GSE36668 and GSE69428 from Gene Expression Omnibus (GEO) database. Weighted gene co-expression network analysis (WGCNA) was performed. Created protein-protein interaction (PPI) network. Used Gene Ontology analysis (GO) and Kyoto Encyclopedia of Genes and Genomes (KEGG) for functional enrichment analysis. Gene Set Enrichment Analysis (GSEA) analysis and survival analysis were performed. Created animal model for western blot analysis. Gene Expression Profiling Interactive Analysis (GEPIA) was performed to explore the role of TTK on the overall survival of renal cancer. RESULTS GO showed that DEGs were enriched in anion and small molecule binding, and DNA methylation. KEGG analysis presented that they mostly enriched in cholesterol metabolism, type 1 diabetes, sphingolipid metabolism, ABC transporters, etc., TTK, mTOR, p-mTOR, AKT, p-AKT, 4EBP1, p-4EBP1 and Bcl-2 are highly expressed in ovarian cancer, Bax, Caspase3 are lowly expressed in ovarian cancer, cell apoptosis is inhibited, leading to deterioration of ovarian cancer. Furthermore, the TTK was not only the hub biomarker of ovarian cancer, but also one significant hub gene of renal cancer, and its expression was up-regulated in the renal cancer. Compared with the renal cancer patients with low expression of TTK, the patients with high expression of TTK have the poor overall survival (P = 0.0021). CONCLUSION TTK inhibits apoptosis through AKT-mTOR pathway, worsening ovarian cancer. And TTK was also one significant hub biomarker of renal cancer.
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Affiliation(s)
- Hongrun Chen
- Department of Urology, China Aerospace Science and Industry Corporation 731 Hospital, Beijing 100074, China
| | - Lianfeng Zhang
- Department of Urology, China Aerospace Science and Industry Corporation 731 Hospital, Beijing 100074, China
| | - Meini Zuo
- Department of Urology, China Aerospace Science and Industry Corporation 731 Hospital, Beijing 100074, China
| | - Xiaowen Lou
- Department of Social Work, The First People's Hospital of Fuyang District of Hangzhou, Hangzhou 311400, Zhejiang, China
| | - Bin Liu
- Department of Urology, The Fourth Hospital of Hebei Medical University, Shijiazhuang 050011, Hebei, China
| | - Taozhu Fu
- Department of Urology, China Aerospace Science and Industry Corporation 731 Hospital, Beijing 100074, China
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Zhuge R, Li Z, He C, Ma W, Yan J, Xue Q, Wang R, Liu Y, Lu R, Du H, Yin F, Guo L. Bone marrow mesenchymal stem cells repair hexavalent chromium-induced testicular injury by regulating autophagy and ferroptosis mediated by the AKT/mTOR pathway in rats. ENVIRONMENTAL TOXICOLOGY 2023; 38:289-299. [PMID: 36416502 DOI: 10.1002/tox.23713] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/23/2022] [Revised: 10/29/2022] [Accepted: 11/05/2022] [Indexed: 06/16/2023]
Abstract
There is no ideal therapy for testicular damage induced by Cr(VI); however, bone marrow mesenchymal stem cells (BMSCs) transplantation may be a promising therapy. A Cr(VI) solution was administered to rats by intraperitoneal injection for 30 days, then BMSCs from donor rats were transplanted. Two weeks later, decreased activity and appetite, along with other pathological changes, were improved in the BMSCs group. The location of BMSCs in damaged testes was observed via laser confocal microscopy. Chromium content in the Cr(VI) and BMSCs groups significantly increased compared with that in the control group, but there was no significant difference between the two groups, as revealed by atomic absorption spectrometry. The ferrous iron and the total iron content of testes in the BMSCs group were significantly lower than those in the Cr(VI) group, as observed by Lillie staining and a tissue iron assay kit. Western blotting and immunohistochemical analyses revealed that the expression of Beclin 1, LC3B, 4-hydroxynonenal, and transferrin receptor 1 was decreased in the BMSCs group, compared with the Cr(VI) group. The expression of glutathione peroxidase 4 (GPX4), SLC7A11, p-AKT, mammalian target of rapamycin (mTOR), and p-mTOR in the BMSCs group was higher than that in the Cr(VI) group. Taken together, we propose that BMSCs repair Cr(VI)-damaged testes by alleviating ferroptosis and downregulating autophagy-associated proteins through the upregulation of AKT and mTOR phosphorylation.
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Affiliation(s)
- Ruijian Zhuge
- Department of Toxicology, School of Public Health, Jilin University, Changchun, Jilin Province, China
| | - Zhongrun Li
- Department of Toxicology, School of Public Health, Jilin University, Changchun, Jilin Province, China
| | - Changhao He
- Department of Toxicology, School of Public Health, Jilin University, Changchun, Jilin Province, China
| | - Wenxuan Ma
- Department of Toxicology, School of Public Health, Jilin University, Changchun, Jilin Province, China
| | - Jun Yan
- Department of Scientific Research Center, China-Japan Union Hospital, Jilin University, Changchun, Jilin Province, China
| | - Qian Xue
- Department of Toxicology, School of Public Health, Jilin University, Changchun, Jilin Province, China
| | - Rui Wang
- Department of Toxicology, School of Public Health, Jilin University, Changchun, Jilin Province, China
| | - Ying Liu
- Department of Toxicology, School of Public Health, Jilin University, Changchun, Jilin Province, China
| | - Rifeng Lu
- Department of Toxicology, School of Public Health, Jilin University, Changchun, Jilin Province, China
| | - Haiying Du
- Department of Toxicology, School of Public Health, Jilin University, Changchun, Jilin Province, China
| | - Fei Yin
- Department of Orthopaedics, China-Japan Union Hospital, Jilin University, Changchun, Jilin Province, China
| | - Li Guo
- Department of Toxicology, School of Public Health, Jilin University, Changchun, Jilin Province, China
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Paez HG, Pitzer CR, Alway SE. Age-Related Dysfunction in Proteostasis and Cellular Quality Control in the Development of Sarcopenia. Cells 2023; 12:cells12020249. [PMID: 36672183 PMCID: PMC9856405 DOI: 10.3390/cells12020249] [Citation(s) in RCA: 11] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2022] [Revised: 01/04/2023] [Accepted: 01/04/2023] [Indexed: 01/11/2023] Open
Abstract
Sarcopenia is a debilitating skeletal muscle disease that accelerates in the last decades of life and is characterized by marked deficits in muscle strength, mass, quality, and metabolic health. The multifactorial causes of sarcopenia have proven difficult to treat and involve a complex interplay between environmental factors and intrinsic age-associated changes. It is generally accepted that sarcopenia results in a progressive loss of skeletal muscle function that exceeds the loss of mass, indicating that while loss of muscle mass is important, loss of muscle quality is the primary defect with advanced age. Furthermore, preclinical models have suggested that aged skeletal muscle exhibits defects in cellular quality control such as the degradation of damaged mitochondria. Recent evidence suggests that a dysregulation of proteostasis, an important regulator of cellular quality control, is a significant contributor to the aging-associated declines in muscle quality, function, and mass. Although skeletal muscle mammalian target of rapamycin complex 1 (mTORC1) plays a critical role in cellular control, including skeletal muscle hypertrophy, paradoxically, sustained activation of mTORC1 recapitulates several characteristics of sarcopenia. Pharmaceutical inhibition of mTORC1 as well as caloric restriction significantly improves muscle quality in aged animals, however, the mechanisms controlling cellular proteostasis are not fully known. This information is important for developing effective therapeutic strategies that mitigate or prevent sarcopenia and associated disability. This review identifies recent and historical understanding of the molecular mechanisms of proteostasis driving age-associated muscle loss and suggests potential therapeutic interventions to slow or prevent sarcopenia.
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Affiliation(s)
- Hector G. Paez
- Department of Physiology, College of Medicine, University of Tennessee Health Science Center, Memphis, TN 38163, USA
- Integrated Biomedical Sciences Graduate Program, College of Graduate Health Sciences, University of Tennessee Health Science Center, Memphis, TN 38163, USA
- Laboratory of Muscle Biology and Sarcopenia, Department of Physical Therapy, College of Health Professions, University of Tennessee Health Science Center, Memphis, TN 38163, USA
- Center for Muscle, Metabolism and Neuropathology, Division of Regenerative and Rehabilitation Sciences, College of Health Professions, University of Tennessee Health Science Center, Memphis, TN 38163, USA
| | - Christopher R. Pitzer
- Department of Physiology, College of Medicine, University of Tennessee Health Science Center, Memphis, TN 38163, USA
- Integrated Biomedical Sciences Graduate Program, College of Graduate Health Sciences, University of Tennessee Health Science Center, Memphis, TN 38163, USA
- Laboratory of Muscle Biology and Sarcopenia, Department of Physical Therapy, College of Health Professions, University of Tennessee Health Science Center, Memphis, TN 38163, USA
- Center for Muscle, Metabolism and Neuropathology, Division of Regenerative and Rehabilitation Sciences, College of Health Professions, University of Tennessee Health Science Center, Memphis, TN 38163, USA
| | - Stephen E. Alway
- Department of Physiology, College of Medicine, University of Tennessee Health Science Center, Memphis, TN 38163, USA
- Integrated Biomedical Sciences Graduate Program, College of Graduate Health Sciences, University of Tennessee Health Science Center, Memphis, TN 38163, USA
- Laboratory of Muscle Biology and Sarcopenia, Department of Physical Therapy, College of Health Professions, University of Tennessee Health Science Center, Memphis, TN 38163, USA
- Center for Muscle, Metabolism and Neuropathology, Division of Regenerative and Rehabilitation Sciences, College of Health Professions, University of Tennessee Health Science Center, Memphis, TN 38163, USA
- The Tennessee Institute of Regenerative Medicine, Memphis, TN 38163, USA
- Correspondence:
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Cai L, Shi L, Peng Z, Sun Y, Chen J. Ageing of skeletal muscle extracellular matrix and mitochondria: finding a potential link. Ann Med 2023; 55:2240707. [PMID: 37643318 PMCID: PMC10732198 DOI: 10.1080/07853890.2023.2240707] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/13/2023] [Revised: 06/13/2023] [Accepted: 07/21/2023] [Indexed: 08/31/2023] Open
Abstract
Aim: To discuss the progress of extracellular matrix (ECM) characteristics, mitochondrial homeostasis, and their potential crosstalk in the pathogenesis of sarcopenia, a geriatric syndrome characterized by a generalized and progressive reduction in muscle mass, strength, and physical performance.Methods: This review focuses on the anatomy and physiology of skeletal muscle, alterations of ECM and mitochondria during ageing, and the role of the interplay between ECM and mitochondria in the pathogenesis of sarcopenia.Results: Emerging evidence points to a clear interplay between mitochondria and ECM in various tissues and organs. Under the ageing process, the ECM undergoes changes in composition and physical properties that may mediate mitochondrial changes via the systematic metabolism, ROS, SPARC pathway, and AMPK/PGC-1α signalling, which in turn exacerbate muscle degeneration. However, the precise effects of such crosstalk on the pathobiology of ageing, particularly in skeletal muscle, have not yet been fully understood.Conclusion: The changes in skeletal muscle ECM and mitochondria are partially responsible for the worsened muscle function during the ageing process. A deeper understanding of their alterations and interactions in sarcopenic patients can help prevent sarcopenia and improve its prognoses.
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Affiliation(s)
- Lubing Cai
- Department of Sports Medicine, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Luze Shi
- Department of Sports Medicine, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Zhen Peng
- Department of Sports Medicine, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Yaying Sun
- Department of Sports Medicine, Huashan Hospital, Fudan University, Shanghai, China
| | - Jiwu Chen
- Department of Sports Medicine, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
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Cheng KYK, Bao Z, Long Y, Liu C, Huang T, Cui C, Chow SKH, Wong RMY, Cheung WH. Sarcopenia and Ageing. Subcell Biochem 2023; 103:95-120. [PMID: 37120466 DOI: 10.1007/978-3-031-26576-1_6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/01/2023]
Abstract
Musculoskeletal ageing is a major health challenge as muscles and bones constitute around 55-60% of body weight. Ageing muscles will result in sarcopenia that is characterized by progressive and generalized loss of skeletal muscle mass and strength with a risk of adverse outcomes. In recent years, a few consensus panels provide new definitions for sarcopenia. It was officially recognized as a disease in 2016 with an ICD-10-CM disease code, M62.84, in the International Classification of Diseases (ICD). With the new definitions, there are many studies emerging to investigate the pathogenesis of sarcopenia, exploring new interventions to treat sarcopenia and evaluating the efficacy of combination treatments for sarcopenia. The scope of this chapter is to summarize and appraise the evidence in terms of (1) clinical signs, symptoms, screening, and diagnosis, (2) pathogenesis of sarcopenia with emphasis on mitochondrial dysfunction, intramuscular fat infiltration and neuromuscular junction deterioration, and (3) current treatments with regard to physical exercises and nutritional supplement.
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Affiliation(s)
- Keith Yu-Kin Cheng
- Department of Orthopaedics and Traumatology, The Chinese University of Hong Kong, Hong Kong, China
| | - Zhengyuan Bao
- Department of Orthopaedics and Traumatology, The Chinese University of Hong Kong, Hong Kong, China
- Division of Sports Medicine and Adult Reconstructive Surgery, Department of Orthopedic Surgery, Nanjing Drum Tower Hospital, The Affiliated Hospital of Nanjing University Medical School, Nanjing, China
| | - Yufeng Long
- Department of Orthopaedics and Traumatology, The Chinese University of Hong Kong, Hong Kong, China
| | - Chaoran Liu
- Department of Orthopaedics and Traumatology, The Chinese University of Hong Kong, Hong Kong, China
| | - Tao Huang
- Department of Orthopaedics and Traumatology, The Chinese University of Hong Kong, Hong Kong, China
| | - Can Cui
- Department of Orthopaedics and Traumatology, The Chinese University of Hong Kong, Hong Kong, China
| | - Simon Kwoon-Ho Chow
- Department of Orthopaedics and Traumatology, The Chinese University of Hong Kong, Hong Kong, China
- Department of Orthopaedic Surgery, Stanford University, Stanford, CA, USA
| | - Ronald Man Yeung Wong
- Department of Orthopaedics and Traumatology, The Chinese University of Hong Kong, Hong Kong, China
| | - Wing-Hoi Cheung
- Department of Orthopaedics and Traumatology, The Chinese University of Hong Kong, Hong Kong, China.
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The Importance of mTORC1-Autophagy Axis for Skeletal Muscle Diseases. Int J Mol Sci 2022; 24:ijms24010297. [PMID: 36613741 PMCID: PMC9820406 DOI: 10.3390/ijms24010297] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2022] [Revised: 12/15/2022] [Accepted: 12/20/2022] [Indexed: 12/28/2022] Open
Abstract
The mechanistic target of rapamycin (mTOR) complex 1, mTORC1, integrates nutrient and growth factor signals with cellular responses and plays critical roles in regulating cell growth, proliferation, and lifespan. mTORC1 signaling has been reported as a central regulator of autophagy by modulating almost all aspects of the autophagic process, including initiation, expansion, and termination. An increasing number of studies suggest that mTORC1 and autophagy are critical for the physiological function of skeletal muscle and are involved in diverse muscle diseases. Here, we review recent insights into the essential roles of mTORC1 and autophagy in skeletal muscles and their implications in human muscle diseases. Multiple inhibitors targeting mTORC1 or autophagy have already been clinically approved, while others are under development. These chemical modulators that target the mTORC1/autophagy pathways represent promising potentials to cure muscle diseases.
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35
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Zha W, Sun Y, Gong W, Li L, Kim W, Li H. Ginseng and ginsenosides: Therapeutic potential for sarcopenia. Biomed Pharmacother 2022; 156:113876. [DOI: 10.1016/j.biopha.2022.113876] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2022] [Revised: 10/05/2022] [Accepted: 10/13/2022] [Indexed: 11/02/2022] Open
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36
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Molecular mechanisms of exercise contributing to tissue regeneration. Signal Transduct Target Ther 2022; 7:383. [PMID: 36446784 PMCID: PMC9709153 DOI: 10.1038/s41392-022-01233-2] [Citation(s) in RCA: 25] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2022] [Revised: 10/03/2022] [Accepted: 10/17/2022] [Indexed: 12/03/2022] Open
Abstract
Physical activity has been known as an essential element to promote human health for centuries. Thus, exercise intervention is encouraged to battle against sedentary lifestyle. Recent rapid advances in molecular biotechnology have demonstrated that both endurance and resistance exercise training, two traditional types of exercise, trigger a series of physiological responses, unraveling the mechanisms of exercise regulating on the human body. Therefore, exercise has been expected as a candidate approach of alleviating a wide range of diseases, such as metabolic diseases, neurodegenerative disorders, tumors, and cardiovascular diseases. In particular, the capacity of exercise to promote tissue regeneration has attracted the attention of many researchers in recent decades. Since most adult human organs have a weak regenerative capacity, it is currently a key challenge in regenerative medicine to improve the efficiency of tissue regeneration. As research progresses, exercise-induced tissue regeneration seems to provide a novel approach for fighting against injury or senescence, establishing strong theoretical basis for more and more "exercise mimetics." These drugs are acting as the pharmaceutical alternatives of those individuals who cannot experience the benefits of exercise. Here, we comprehensively provide a description of the benefits of exercise on tissue regeneration in diverse organs, mainly focusing on musculoskeletal system, cardiovascular system, and nervous system. We also discuss the underlying molecular mechanisms associated with the regenerative effects of exercise and emerging therapeutic exercise mimetics for regeneration, as well as the associated opportunities and challenges. We aim to describe an integrated perspective on the current advances of distinct physiological mechanisms associated with exercise-induced tissue regeneration on various organs and facilitate the development of drugs that mimics the benefits of exercise.
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37
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Mammalian Target of Rapamycin (mTOR) Signaling at the Crossroad of Muscle Fiber Fate in Sarcopenia. Int J Mol Sci 2022; 23:ijms232213823. [PMID: 36430301 PMCID: PMC9696247 DOI: 10.3390/ijms232213823] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2022] [Revised: 11/02/2022] [Accepted: 11/08/2022] [Indexed: 11/12/2022] Open
Abstract
The mammalian target of rapamycin (mTOR) is a major regulator of skeletal myocyte viability. The signaling pathways triggered by mTOR vary according to the type of endogenous and exogenous factors (e.g., redox balance, nutrient availability, physical activity) as well as organismal age. Here, we provide an overview of mTOR signaling in skeletal muscle, with a special focus on the role played by mTOR in the development of sarcopenia. Intervention strategies targeting mTOR in sarcopenia (e.g., supplementation of plant extracts, hormones, inorganic ions, calorie restriction, and exercise) have also been discussed.
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38
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Wu Q, Tao J, Wu L, Wei W, Zhang X, Zhang Z, Zhang X, Jiang X, Chen N. Corn peptide enhances exercise performance and prevents myocardial damage of mice caused by overtraining through activating autophagy. J Funct Foods 2022. [DOI: 10.1016/j.jff.2022.105227] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
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Huo F, Liu Q, Liu H. Contribution of muscle satellite cells to sarcopenia. Front Physiol 2022; 13:892749. [PMID: 36035464 PMCID: PMC9411786 DOI: 10.3389/fphys.2022.892749] [Citation(s) in RCA: 18] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2022] [Accepted: 07/21/2022] [Indexed: 11/13/2022] Open
Abstract
Sarcopenia, a disorder characterized by age-related muscle loss and reduced muscle strength, is associated with decreased individual independence and quality of life, as well as a high risk of death. Skeletal muscle houses a normally mitotically quiescent population of adult stem cells called muscle satellite cells (MuSCs) that are responsible for muscle maintenance, growth, repair, and regeneration throughout the life cycle. Patients with sarcopenia are often exhibit dysregulation of MuSCs homeostasis. In this review, we focus on the etiology, assessment, and treatment of sarcopenia. We also discuss phenotypic and regulatory mechanisms of MuSC quiescence, activation, and aging states, as well as the controversy between MuSC depletion and sarcopenia. Finally, we give a multi-dimensional treatment strategy for sarcopenia based on improving MuSC function.
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Affiliation(s)
- Fengjiao Huo
- Institute for Regenerative Medicine, Shanghai East Hospital, Tongji University School of Medicine, Shanghai, China
| | - Qing Liu
- Institute for Regenerative Medicine, Shanghai East Hospital, Tongji University School of Medicine, Shanghai, China
| | - Hailiang Liu
- Institute for Regenerative Medicine, Shanghai East Hospital, Tongji University School of Medicine, Shanghai, China
- Key Laboratory of Xinjiang Phytomedicine Resource and Utilization of Ministry of Education, College of Life Sciences, Shihezi University, Shihezi, China
- *Correspondence: Hailiang Liu,
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40
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Wang C, Liang J, Ren Y, Huang J, Jin B, Wang G, Chen N. A Preclinical Systematic Review of the Effects of Chronic Exercise on Autophagy-Related Proteins in Aging Skeletal Muscle. Front Physiol 2022; 13:930185. [PMID: 35910582 PMCID: PMC9329943 DOI: 10.3389/fphys.2022.930185] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2022] [Accepted: 06/17/2022] [Indexed: 11/13/2022] Open
Abstract
Background: Exercise is one of the most effective interventions for preventing and treating skeletal muscle aging. Exercise-induced autophagy is widely acknowledged to regulate skeletal muscle mass and delay skeletal muscle aging. However, the mechanisms underlying of the effect of different exercises on autophagy in aging skeletal muscle remain unclear. Methods: A systematic review was performed following an electronic search of SCOPUS, PubMed, Web of Science, ScienceDirect, and Google Scholar and two Chinese electronic databases, CNKI and Wan Fang. All articles published in English and Chinese between January 2010 and January 2022 that quantified autophagy-related proteins in aging skeletal muscle models. Results: The primary outcome was autophagy assessment, indicated by changes in the levels of any autophagy-associated proteins. A total of fifteen studies were included in the final review. Chronic exercise modes mainly comprise aerobic exercise and resistance exercise, and the intervention types include treadmill training, voluntary wheel running, and ladder training. LC3, Atg5-Atg7/9/12, mTOR, Beclin1, Bcl-2, p62, PGC-1α, and other protein levels were quantified, and the results showed that long-term aerobic exercise and resistance exercise could increase the expression of autophagy-related proteins in aging skeletal muscle (p < 0.05). However, there was no significant difference in short term or high-intensity chronic exercise, and different types and intensities of exercise yielded different levels of significance for autophagy-related protein expression. Conclusion: Existing evidence reveals that high-intensity exercise may induce excessive autophagy, while low-intensity exercise for a short period (Intervention duration <12 weeks, frequency <3 times/week) may not reach the threshold for exercise-induced autophagy. Precise control of the exercise dose is essential in the long term to maximize the benefits of exercise. Further investigation is warranted to explore the relationship between chronic exercise and different exercise duration and types to substantiate the delaying of skeletal muscle aging by exercise.
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Affiliation(s)
- Cenyi Wang
- School of Physical Education and Sports Science, Soochow University, Suzhou, China
| | - Jiling Liang
- Tianjiu Research and Development Center for Exercise Nutrition and Foods, Hubei Key Laboratory of Exercise Training and Monitoring, College of Health Science, Wuhan Sports University, Wuhan, China
| | - Yuanyuan Ren
- School of Physical Education and Sports Science, Soochow University, Suzhou, China
| | - Jielun Huang
- Tianjiu Research and Development Center for Exercise Nutrition and Foods, Hubei Key Laboratory of Exercise Training and Monitoring, College of Health Science, Wuhan Sports University, Wuhan, China
| | - Baoming Jin
- School of Physical Education and Sports Science, Soochow University, Suzhou, China
| | - Guodong Wang
- School of Physical Education and Sports Science, Soochow University, Suzhou, China
- *Correspondence: Guodong Wang, ; Ning Chen,
| | - Ning Chen
- Tianjiu Research and Development Center for Exercise Nutrition and Foods, Hubei Key Laboratory of Exercise Training and Monitoring, College of Health Science, Wuhan Sports University, Wuhan, China
- *Correspondence: Guodong Wang, ; Ning Chen,
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Long YF, Chow SKH, Cui C, Wong RMY, Qin L, Law SW, Cheung WH. Regulation of mitochondrial dynamic equilibrium by physical exercise in sarcopenia: A systematic review. J Orthop Translat 2022; 35:37-52. [PMID: 36090001 PMCID: PMC9421175 DOI: 10.1016/j.jot.2022.06.003] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/13/2022] [Revised: 06/15/2022] [Accepted: 06/17/2022] [Indexed: 12/06/2022] Open
Abstract
Background Sarcopenia is a hallmark of the ageing process, which is characterized by the decline in muscle mass and strength. Growing evidence indicates that mitochondria dysfunction play core roles in this process. Meanwhile, physical exercise is regarded as one of the efficiency therapies to attenuate sarcopenia via regulating mitochondrial function during ageing. However, the specific mechanisms among exercise, mitochondrial function and sarcopenia are still unclear. The aim of this systematic review is to delineate the effects of physical exercise on mitochondria during ageing in order to explore potential target for rescuing sarcopenia. Methods A systematic literature search was performed in PubMed, Embase and Web of Science. Information was extracted from the included studies for review. Results In this review, 16 pre-clinical studies were included and 105 clinical studies that were not mechanistic research were excluded. 16 pre-clinical studies provided evidence that physical exercise could affect mitochondrial quality control to attenuate sarcopenia. Most of the included studies described the important role of mitochondrial dynamic equilibrium in sarcopenia and showed that effective physical exercise could influence mitochondrial biogenesis, fusion, fission and mitophagy to attenuate sarcopenia in aged animal. Conclusions This systematic review provides an up-to-date sequential overview and highlights the link in the potential mitochondria-related target and physical exercise in aged animal. Translation of this article Currently, there is no standard treatment method for sarcopenia. This systematic review revealed the underlying mechanisms for how physical exercise improved muscle performance via regulating mitochondrial dynamic equilibrium, which could provide scientific support for using exercise as a timely intervention for sarcopenia. Additionally, this systematic review allows a better understanding of mitochondrial dynamic equilibrium and exercise for future development of new therapeutic interventions to attenuate sarcopenia.
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Testa MTDJ, Cella PS, Marinello PC, Frajacomo FTT, Padilha CDS, Perandini PC, Moura FA, Duarte JA, Cecchini R, Guarnier FA, Deminice R. Resistance Training Attenuates Activation of STAT3 and Muscle Atrophy in Tumor-Bearing Mice. Front Oncol 2022; 12:880787. [PMID: 35847939 PMCID: PMC9283857 DOI: 10.3389/fonc.2022.880787] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2022] [Accepted: 06/06/2022] [Indexed: 11/16/2022] Open
Abstract
Purpose Although the role of signal transducers and activators of transcription (STAT3) in cachexia due to the association of circulating IL-6 and muscle wasting has been extensively demonstrated, the effect of resistance training on STAT3 in mediating muscle atrophy in tumor-bearing mice is unknown. The aim of this study is to investigate the effects of resistance exercise training on inflammatory cytokines and oxidative-mediated STAT3 activation and muscle loss prevention in tumor-bearing mice. Methods Male Swiss mice were inoculated with Ehrlich tumor cells and exposed or not exposed to resistance exercise protocol of ladder climbing. Skeletal muscle STAT3 protein content was measured, compared between groups, and tested for possible association with plasma interleukins and local oxidative stress markers. Components of the ubiquitin-proteasome and autophagy pathways were assessed by real-time PCR or immunoblotting. Results Resistance training prevented STAT3 excessive activation in skeletal muscle mediated by the overabundance of plasma IL-6 and muscle oxidative stress. These mechanisms contributed to preventing the increased key genes and proteins of ubiquitin-proteasome and autophagy pathways in tumor-bearing mice, such as Atrogin-1, LC3B-II, and Beclin-1. Beyond preventing muscle atrophy, RT also prevented strength loss and impaired locomotor capacity, hallmarks of sarcopenia. Conclusion Our results suggest that STAT3 inhibition is central in resistance exercise protective effects against cancer-induced muscle atrophy and strength loss.
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Affiliation(s)
| | - Paola Sanches Cella
- Department of Physical Education, State University of Londrina, Londrina, Brazil
| | - Poliana Camila Marinello
- Department of Physical Education, State University of Londrina, Londrina, Brazil
- Department of General Pathology, State University of Londrina, Londrina, Brazil
| | | | - Camila de Souza Padilha
- Department of Physical Education, State University of Londrina, Londrina, Brazil
- Department of Physical Education, State University of São Paulo (UNESP), Presidente Prudente, Brazil
| | | | - Felipe Arruda Moura
- Department of Physical Education, State University of Londrina, Londrina, Brazil
| | | | - Rubens Cecchini
- Department of General Pathology, State University of Londrina, Londrina, Brazil
| | | | - Rafael Deminice
- Department of Physical Education, State University of Londrina, Londrina, Brazil
- *Correspondence: Rafael Deminice, ; orcid.org/0000-0002-9246-1079
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Chen S, He Z, Xie W, Chen X, Lin Z, Ma J, Liu Z, Yang S, Wang Y. Ginsenoside Rh2 attenuates CDAHFD-induced liver fibrosis in mice by improving intestinal microbial composition and regulating LPS-mediated autophagy. PHYTOMEDICINE : INTERNATIONAL JOURNAL OF PHYTOTHERAPY AND PHYTOPHARMACOLOGY 2022; 101:154121. [PMID: 35489327 DOI: 10.1016/j.phymed.2022.154121] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/17/2021] [Revised: 03/26/2022] [Accepted: 04/17/2022] [Indexed: 05/17/2023]
Abstract
BACKGROUND Nowadays, liver diseases are threatening more and more people all over the world and one of the main causes is liver fibrosis. However, there is no effective way to reverse liver fibrosis. PURPOSE To investigate whether ginsenoside Rh2 (G-Rh2) can alleviate liver fibrosis and elucidate its underlying mechanism. METHODS In vivo and in vitro methods were adopted in this research. Choline-deficient, L-amino acid-defined, high-fat diet (CDAHFD) was used to feed mice to induce liver fibrosis, and HSC-T6 cells were used to establish an LPS-induced model of liver fibrosis. Through histopathological staining, hematoxylin-eosin (H&E) staining, western blot analysis, intestinal bacteria 16SrRNA sequencing, and other technical means, the research explored whether G-Rh2 possesses anti-fibrotic activity. RESULTS G-Rh2 could notably alleviate CDAHFD-induced liver fibrosis in mice. In particular, it could alleviate liver injury and reduce plasma lipopolysaccharide (LPS) levels. Additionally, G-Rh2 could repair intestinal injury as well as regulate intestinal microbial diversity and composition. HSC-T6 cells could be activated and autophagy could be induced further by LPS in vitro. After being treated with G-Rh2, autophagy was restrained and activation of hepatic stellate cells (HSCs) was controlled. Deeper research showed that G-Rh2 restrained the activation of HSCs via stimulating the AKT-mTOR signaling pathway, restraining autophagy. CONCLUSION The results of our studies clearly suggest that G-Rh2 repairs intestinal injury, improves intestinal microbial composition, reduces plasma LPS levels, and activates the AKT-mTOR signaling pathway to restrain LPS-mediated autophagy, thus playing an important role in anti-hepatic fibrosis. G-Rh2 was found to have the potential to effectively alleviate liver fibrosis.
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Affiliation(s)
- Siyu Chen
- College of Chinese Medicinal Materials, JiLin Agricultural University, Changchun,130118, China
| | - Ziwei He
- College of Chinese Medicinal Materials, JiLin Agricultural University, Changchun,130118, China
| | - Wei Xie
- School of Pharmaceutical Sciences, WenZhou Medical University, Wenzhou 325035, China
| | - Xuan Chen
- College of Chinese Medicinal Materials, JiLin Agricultural University, Changchun,130118, China
| | - Zhuofeng Lin
- School of Pharmaceutical Sciences, WenZhou Medical University, Wenzhou 325035, China
| | - Jisheng Ma
- School of Pharmaceutical Sciences, WenZhou Medical University, Wenzhou 325035, China
| | - Zhi Liu
- College of Chinese Medicinal Materials, JiLin Agricultural University, Changchun,130118, China
| | - Shihai Yang
- College of Chinese Medicinal Materials, JiLin Agricultural University, Changchun,130118, China; Laboratory for cultivation and breeding of medicinal plants of National Administrition of Traditional Chinese Medicine, JiLin Agricultural University, Changchun,130118, China.
| | - Yanfang Wang
- College of Chinese Medicinal Materials, JiLin Agricultural University, Changchun,130118, China; Laboratory for cultivation and breeding of medicinal plants of National Administrition of Traditional Chinese Medicine, JiLin Agricultural University, Changchun,130118, China.
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Goto-Inoue N, Morisasa M, Kimura K, Mori T, Furuichi Y, Manabe Y, Fujii NL. Mass spectrometry imaging reveals local metabolic changes in skeletal muscle due to chronic training. Biosci Biotechnol Biochem 2022; 86:730-738. [PMID: 35285857 DOI: 10.1093/bbb/zbac037] [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: 11/19/2021] [Accepted: 03/09/2022] [Indexed: 11/13/2022]
Abstract
Muscle atrophy is a major health problem that needs effective prevention and treatment approaches. Chronic exercise, an effective treatment strategy for atrophy, promotes muscle hypertrophy, which leads to dynamic metabolic changes; however, the metabolic changes vary among myofiber types. To investigate local metabolic changes due to chronic exercise, we utilized comprehensive proteome and mass spectrometry (MS) imaging analyses. Our training model exhibited hypertrophic features only in glycolytic myofibers. The proteome analyses demonstrated that exercise promoted anabolic pathways, such as protein synthesis, and significant changes in lipid metabolism, but not in glucose metabolism. Furthermore, the fundamental energy sources, glycogen, neutral lipids, and ATP, were sensitive to exercise, and the changes in these sources differed between glycolytic and oxidative myofibers. MS imaging revealed that the lipid composition differs among myofibers; arachidonic acid might be an effective target for promoting lipid metabolism during muscle hypertrophy in oxidative myofibers.
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Affiliation(s)
- Naoko Goto-Inoue
- Department of Marine Science and Resources, College of Bioresource Sciences, Nihon University, 1866 Kameino, Fujisawa, Kanagawa, Japan
| | - Mizuki Morisasa
- Department of Marine Science and Resources, College of Bioresource Sciences, Nihon University, 1866 Kameino, Fujisawa, Kanagawa, Japan
| | - Keisuke Kimura
- Department of Marine Science and Resources, College of Bioresource Sciences, Nihon University, 1866 Kameino, Fujisawa, Kanagawa, Japan
| | - Tsukasa Mori
- Department of Marine Science and Resources, College of Bioresource Sciences, Nihon University, 1866 Kameino, Fujisawa, Kanagawa, Japan
| | - Yasuro Furuichi
- Health Promotion Sciences, Tokyo Metropolitan University, 1-1 Minamiosawa Hachioji, Tokyo, Japan
| | - Yasuko Manabe
- Health Promotion Sciences, Tokyo Metropolitan University, 1-1 Minamiosawa Hachioji, Tokyo, Japan
| | - Nobuharu L Fujii
- Health Promotion Sciences, Tokyo Metropolitan University, 1-1 Minamiosawa Hachioji, Tokyo, Japan
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Apoptosis-Inducing Factor Deficiency Induces Tissue-Specific Alterations in Autophagy: Insights from a Preclinical Model of Mitochondrial Disease and Exercise Training Effects. Antioxidants (Basel) 2022; 11:antiox11030510. [PMID: 35326160 PMCID: PMC8944439 DOI: 10.3390/antiox11030510] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2022] [Revised: 03/01/2022] [Accepted: 03/03/2022] [Indexed: 02/04/2023] Open
Abstract
We analyzed the effects of apoptosis-inducing factor (AIF) deficiency, as well as those of an exercise training intervention on autophagy across tissues (heart, skeletal muscle, cerebellum and brain), that are primarily affected by mitochondrial diseases, using a preclinical model of these conditions, the Harlequin (Hq) mouse. Autophagy markers were analyzed in: (i) 2, 3 and 6 month-old male wild-type (WT) and Hq mice, and (ii) WT and Hq male mice that were allocated to an exercise training or sedentary group. The exercise training started upon onset of the first symptoms of ataxia in Hq mice and lasted for 8 weeks. Higher content of autophagy markers and free amino acids, and lower levels of sarcomeric proteins were found in the skeletal muscle and heart of Hq mice, suggesting increased protein catabolism. Leupeptin-treatment demonstrated normal autophagic flux in the Hq heart and the absence of mitophagy. In the cerebellum and brain, a lower abundance of Beclin 1 and ATG16L was detected, whereas higher levels of the autophagy substrate p62 and LAMP1 levels were observed in the cerebellum. The exercise intervention did not counteract the autophagy alterations found in any of the analyzed tissues. In conclusion, AIF deficiency induces tissue-specific alteration of autophagy in the Hq mouse, with accumulation of autophagy markers and free amino acids in the heart and skeletal muscle, but lower levels of autophagy-related proteins in the cerebellum and brain. Exercise intervention, at least if starting when muscle atrophy and neurological symptoms are already present, is not sufficient to mitigate autophagy perturbations.
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Exercise and Training Regulation of Autophagy Markers in Human and Rat Skeletal Muscle. Int J Mol Sci 2022; 23:ijms23052619. [PMID: 35269762 PMCID: PMC8910616 DOI: 10.3390/ijms23052619] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2022] [Revised: 02/20/2022] [Accepted: 02/25/2022] [Indexed: 02/05/2023] Open
Abstract
Autophagy is a key intracellular mechanism by which cells degrade old or dysfunctional proteins and organelles. In skeletal muscle, evidence suggests that exercise increases autophagosome content and autophagy flux. However, the exercise-induced response seems to differ between rodents and humans, and little is known about how different exercise prescription parameters may affect these results. The present study utilised skeletal muscle samples obtained from four different experimental studies using rats and humans. Here, we show that, following exercise, in the soleus muscle of Wistar rats, there is an increase in LC3B-I protein levels immediately after exercise (+109%), and a subsequent increase in LC3B-II protein levels 3 h into the recovery (+97%), despite no change in Map1lc3b mRNA levels. Conversely, in human skeletal muscle, there is an immediate exercise-induced decrease in LC3B-II protein levels (−24%), independent of whether exercise is performed below or above the maximal lactate steady state, which returns to baseline 3.5 h following recovery, while no change in LC3B-I protein levels or MAP1LC3B mRNA levels is observed. SQSTM1/p62 protein and mRNA levels did not change in either rats or humans following exercise. By employing an ex vivo autophagy flux assay previously used in rodents we demonstrate that the exercise-induced decrease in LC3B-II protein levels in humans does not reflect a decreased autophagy flux. Instead, effect size analyses suggest a modest-to-large increase in autophagy flux following exercise that lasts up to 24 h. Our findings suggest that exercise-induced changes in autophagosome content markers differ between rodents and humans, and that exercise-induced decreases in LC3B-II protein levels do not reflect autophagy flux level.
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Bonilauri B, Dallagiovanna B. Microproteins in skeletal muscle: hidden keys in muscle physiology. J Cachexia Sarcopenia Muscle 2022; 13:100-113. [PMID: 34850602 PMCID: PMC8818594 DOI: 10.1002/jcsm.12866] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/06/2021] [Revised: 10/01/2021] [Accepted: 10/12/2021] [Indexed: 11/10/2022] Open
Abstract
Recent advances in the transcriptomics, translatomics, and proteomics have led us to the exciting new world of functional endogenous microproteins. These microproteins have a small size and are derived from small open reading frames (smORFs) of RNAs previously annotated as non-coding (e.g. lncRNAs and circRNAs) as well as from untranslated regions and canonical mRNAs. The presence of these microproteins reveals a much larger translatable portion of the genome, shifting previously defined dogmas and paradigms. These findings affect our view of organisms as a whole, including skeletal muscle tissue. Emerging evidence demonstrates that several smORF-derived microproteins play crucial roles during muscle development (myogenesis), maintenance, and regeneration, as well as lipid and glucose metabolism and skeletal muscle bioenergetics. These microproteins are also involved in processes including physical activity capacity, cellular stress, and muscular-related diseases (i.e. myopathy, cachexia, atrophy, and muscle wasting). Given the role of these small proteins as important key regulators of several skeletal muscle processes, there are rich prospects for the discovery of new microproteins and possible therapies using synthetic microproteins.
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Affiliation(s)
- Bernardo Bonilauri
- Laboratory of Basic Biology of Stem Cells (LABCET), Carlos Chagas Institute - Fiocruz-PR, Curitiba, Paraná, Brazil
| | - Bruno Dallagiovanna
- Laboratory of Basic Biology of Stem Cells (LABCET), Carlos Chagas Institute - Fiocruz-PR, Curitiba, Paraná, Brazil
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Xie X, Shu R, Yu C, Fu Z, Li Z. Mammalian AKT, the Emerging Roles on Mitochondrial Function in Diseases. Aging Dis 2022; 13:157-174. [PMID: 35111368 PMCID: PMC8782557 DOI: 10.14336/ad.2021.0729] [Citation(s) in RCA: 24] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2021] [Accepted: 07/29/2021] [Indexed: 01/21/2023] Open
Abstract
Mitochondrial dysfunction may play a crucial role in various diseases due to its roles in the regulation of energy production and cellular metabolism. Serine/threonine kinase (AKT) is a highly recognized antioxidant, immunomodulatory, anti-proliferation, and endocrine modulatory molecule. Interestingly, increasing studies have revealed that AKT can modulate mitochondria-mediated apoptosis, redox states, dynamic balance, autophagy, and metabolism. AKT thus plays multifaceted roles in mitochondrial function and is involved in the modulation of mitochondria-related diseases. This paper reviews the protective effects of AKT and its potential mechanisms of action in relation to mitochondrial function in various diseases.
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Affiliation(s)
- Xiaoxian Xie
- 1College of Biotechnology and Bioengineering, Zhejiang University of Technology, Hangzhou, China
| | - Ruonan Shu
- 1College of Biotechnology and Bioengineering, Zhejiang University of Technology, Hangzhou, China
| | - Chunan Yu
- 1College of Biotechnology and Bioengineering, Zhejiang University of Technology, Hangzhou, China
| | - Zhengwei Fu
- 1College of Biotechnology and Bioengineering, Zhejiang University of Technology, Hangzhou, China
| | - Zezhi Li
- 2Department of Psychiatry, The Affiliated Brain Hospital of Guangzhou Medical University, Guangzhou, China
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Li-Li F, Bo-Wen L, Yue X, Zhen-Jun T, Meng-Xin C. Aerobic exercise and resistance exercise alleviate skeletal muscle atrophy through IGF-1/IGF-1R-PI3K/Akt pathway in mice with myocardial infarction. Am J Physiol Cell Physiol 2021; 322:C164-C176. [PMID: 34852207 DOI: 10.1152/ajpcell.00344.2021] [Citation(s) in RCA: 27] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
OBJECTIVES Myocardial infarction (MI)-induced heart failure (HF) is commonly accompanied with profound effects on skeletal muscle. With the process of MI-induced HF, perturbations in skeletal muscle contribute to muscle atrophy. Exercise is viewed as a feasible strategy to prevent muscle atrophy. The aims of this study were to investigate whether exercise could alleviate MI-induced skeletal muscle atrophy via insulin-like growth factor 1 (IGF-1) pathway in mice. MATERIALS AND METHODS Male C57/BL6 mice were used to establish the MI model and divided into three groups: sedentary MI group, MI with aerobic exercise group and MI with resistance exercise group, sham-operated group was used as control. Exercise-trained animals were subjected to four-weeks of aerobic exercise (AE) or resistance exercise (RE). Cardiac function, muscle weight, myofiber size, levels of IGF-1 signaling and proteins related to myogenesis, protein synthesis and degradation and cell apoptosis in gastrocnemius muscle were detected. And H2O2-treated C2C12 cells were intervened with recombinant human IGF-1, IGF-1R inhibitor NVP-AEW541 and PI3K inhibitor LY294002 to explore the mechanism. Results:Exercises up-regulated the IGF-1/IGF-1R-phosphatidylinositol 3-kinase (PI3K)/protein kinase B (Akt) signaling, increased the expressions of Pax7, myogenic regulatory factors (MRFs) and protein synthesis, reduced protein degradation and cell apoptosis in MI-mice. In vitro, IGF-1 up-regulated the levels of Pax7 and MRFs, mTOR and P70S6K, reduced MuRF1, MAFbx and inhibited cell apoptosis via IGF-1R-PI3K/Akt pathway. CONCLUSION AE and RE, safely and effectively, alleviate skeletal muscle atrophy by regulating the levels of myogenesis, protein degradation and cells apoptosis in mice with MI via activating IGF-1/IGF-1R-PI3K/Akt pathway.
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Affiliation(s)
- Feng Li-Li
- Institute of Sports Biology, College of Physical Education, Shaanxi Normal University, Xi'an, China
| | - Li Bo-Wen
- Institute of Sports Biology, College of Physical Education, Shaanxi Normal University, Xi'an, China.,College of Education, Physical Education Department, Zhejiang University, China
| | - Xi Yue
- Institute of Sports Biology, College of Physical Education, Shaanxi Normal University, Xi'an, China
| | - Tian Zhen-Jun
- Institute of Sports Biology, College of Physical Education, Shaanxi Normal University, Xi'an, China
| | - Cai Meng-Xin
- Institute of Sports Biology, College of Physical Education, Shaanxi Normal University, Xi'an, China
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Effects of high-intensity interval training on mitochondrial supercomplex assembly and biogenesis, mitophagy, and the AMP-activated protein kinase pathway in the soleus muscle of aged female rats. Exp Gerontol 2021; 158:111648. [PMID: 34861356 DOI: 10.1016/j.exger.2021.111648] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2021] [Revised: 11/11/2021] [Accepted: 11/28/2021] [Indexed: 12/24/2022]
Abstract
PURPOSE Exercise helps improve mitochondrial function to combat sarcopenia. Certain parts of the mitochondrial respiratory chain complex can form a higher-order structure called "supercomplex" to reduce the production of reactive oxygen species and improve muscle mass. The effect of exercise on the assembly of the mitochondrial supercomplex is still unclear. The aim of this study was to investigate the effects of long-term high-intensity interval training (HIIT) on mitochondrial biogenesis, mitophagy, and mitochondrial supercomplexes (mitoSCs) assembly in aging soleus muscle. METHODS Female Sprague-Dawley rats (n = 36) were randomly divided into four groups: young sedentary (Y-SED, 8 months old, n = 12), old sedentary (O-SED, 26 months old, n = 12), moderate-intensity continuous training (MICT, from 18 to 26 months old, n = 12), and HIIT (from 18 to 26 months old, n = 12). Rats in the MICT and HIIT groups were subjected to an 8-month training program. Real-time fluorescent quantitative polymerase chain reaction was used to measure the expression of the antioxidative factors, inflammatory factors, and mitochondrial fusion- and division-related genes. Western blotting was used to detect the expression of mitochondrial biogenesis and mitophagy markers and AMP-activated protein kinase (AMPK) pathway proteins. Enzyme-linked immunosorbent assays were used to determine serum irisin contents. Blue native polyacrylamide gel electrophoresis was used to assess the formation of mitochondrial supercomplexes. RESULTS Compared with the Y-SED group, the soleus muscle and mitochondria in the O-SED group showed reduced expression of mitophagy- and mitochondrial biogenesis-related proteins. In the HIIT group, the expression of autophagy-related proteins in the soleus muscle and mitochondria was significantly increased compared with that in the MICT group. Serum irisin and mitochondrial fusion protein levels significantly decreased with age. Superoxide dismutase 2 protein levels and AMPK pathway protein expression were significantly increased in the HIIT group compared with those in the other groups. Additionally, the expression levels of mitoSCs and the mRNA levels of interleukin-15 and optical atrophy 1 increased in the HIIT group compared with that in the MICT group. CONCLUSION Compared with MICT, HIIT activated the AMPK pathway to upregulate mitochondrial biogenesis- and mitophagy-related proteins, and promote the assembly and formation of mitoSCs to improve the mitochondrial function of aging soleus muscles.
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