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Chen S, He T, Chen J, Wen D, Wang C, Huang W, Yang Z, Yang M, Li M, Huang S, Huang Z, Zhu H. Betaine delays age-related muscle loss by mitigating Mss51-induced impairment in mitochondrial respiration via Yin Yang1. J Cachexia Sarcopenia Muscle 2024. [PMID: 39187977 DOI: 10.1002/jcsm.13558] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/11/2023] [Revised: 05/18/2024] [Accepted: 07/05/2024] [Indexed: 08/28/2024] Open
Abstract
BACKGROUND Mitochondrial dysfunction is one of the hallmarks of aging and a leading contributor to sarcopenia. Nutrients are essential for improving mitochondrial function and skeletal muscle health during the aging process. Betaine is a nutrient with potential muscle-preserving properties. However, whether and how betaine could regulate the mitochondria function in aging muscle are poorly understood. We aimed to explore the molecular target and underlying mechanism of betaine in attenuating the age-related mitochondrial dysfunction in skeletal muscle. METHODS Young mice (YOU, 2 months), old mice (OLD, 15 months), and old mice with betaine treatment (BET, 15 months) were fed for 12 weeks. The effects of betaine on muscle mass, strength, function, and subcellular structure of muscle fibres were assessed. RNA sequencing (RNA-seq) was conducted to identify the molecular target of betaine. The impacts of betaine on mitochondrial-related molecules, superoxide accumulation, and oxidative respiration were examined using western blotting (WB), immunofluorescence (IF) and seahorse assay. The underlying mechanism of betaine regulation on the molecular target to maintain mitochondrial function was investigated by luciferase reporter assay, chromatin immunoprecipitation and electrophoretic mobility shift assay. Adenoassociated virus transfection, succinate dehydrogenase staining (SDH), and energy expenditure assessment were performed on 20-month-old mice for validating the mechanism in vivo. RESULTS Betaine intervention demonstrated anti-aging effects on the muscle mass (P = 0.017), strength (P = 0.010), and running distance (P = 0.013). Mitochondrial-related markers (ATP5a, Sdha, and Uqcrc2) were 1.1- to 1.5-fold higher in BET than OLD (all P ≤ 0.036) with less wasted mitochondrial vacuoles accumulating in sarcomere. Bioinformatic analysis from RNA-seq displayed pathways related to mitochondrial respiration activity was higher enriched in BET group (NES = -0.87, FDR = 0.10). The quantitative real time PCR (qRT-PCR) revealed betaine significantly reduced the expression of a novel mitochondrial regulator, Mss51 (-24.9%, P = 0.002). In C2C12 cells, betaine restored the Mss51-mediated suppression in mitochondrial respiration proteins (all P ≤ 0.041), attenuated oxygen consumption impairment, and superoxide accumulation (by 20.7%, P = 0.001). Mechanically, betaine attenuated aging-induced repression in Yy1 mRNA expression (BET vs. OLD: 2.06 vs. 1.02, P = 0.009). Yy1 transcriptionally suppressed Mss51 mRNA expression both in vitro and in vivo. This contributed to the preservation of mitochondrial respiration, improvement for energy expenditure (P = 0.008), and delay of muscle loss during aging process. CONCLUSIONS Altogether, betaine transcriptionally represses Mss51 via Yy1, improving age-related mitochondrial respiration in skeletal muscle. These findings suggest betaine holds promise as a dietary supplement to delay skeletal muscle degeneration and improve age-related mitochondrial diseases.
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Affiliation(s)
- Si Chen
- Department of Nutrition, School of Public Health, Sun Yat-sen University, Guangzhou, China
- School of Public Health, Guangdong Provincial Key Laboratory of Food, Nutrition and Health, Sun Yat-sen University, Guangzhou, China
| | - Tongtong He
- Department of Nutrition, School of Public Health, Sun Yat-sen University, Guangzhou, China
- School of Public Health, Guangdong Provincial Key Laboratory of Food, Nutrition and Health, Sun Yat-sen University, Guangzhou, China
| | - Jiedong Chen
- Department of Nutrition, School of Public Health, Sun Yat-sen University, Guangzhou, China
- School of Public Health, Guangdong Provincial Key Laboratory of Food, Nutrition and Health, Sun Yat-sen University, Guangzhou, China
| | - Dongsheng Wen
- Department of Hepatobiliary Oncology, State Key Laboratory of Oncology in South China, Sun Yat-sen University Cancer Center, Sun Yat-sen University Cancer Center, Guangzhou, China
| | - Chen Wang
- Department of Nutrition, School of Public Health, Sun Yat-sen University, Guangzhou, China
- School of Public Health, Guangdong Provincial Key Laboratory of Food, Nutrition and Health, Sun Yat-sen University, Guangzhou, China
| | - Wenge Huang
- Center of Experimental Animals, Sun Yat-sen University, Guangzhou, China
| | - Zhijun Yang
- Department of Nutrition, School of Public Health, Sun Yat-sen University, Guangzhou, China
- School of Public Health, Guangdong Provincial Key Laboratory of Food, Nutrition and Health, Sun Yat-sen University, Guangzhou, China
| | - Mengtao Yang
- Department of Nutrition, School of Public Health, Sun Yat-sen University, Guangzhou, China
- School of Public Health, Guangdong Provincial Key Laboratory of Food, Nutrition and Health, Sun Yat-sen University, Guangzhou, China
| | - Mengchu Li
- Department of Nutrition, School of Public Health, Sun Yat-sen University, Guangzhou, China
- School of Public Health, Guangdong Provincial Key Laboratory of Food, Nutrition and Health, Sun Yat-sen University, Guangzhou, China
| | - Siyu Huang
- Department of Nutrition, School of Public Health, Sun Yat-sen University, Guangzhou, China
- School of Public Health, Guangdong Provincial Key Laboratory of Food, Nutrition and Health, Sun Yat-sen University, Guangzhou, China
| | - Zihui Huang
- Department of Nutrition, School of Public Health, Sun Yat-sen University, Guangzhou, China
- School of Public Health, Guangdong Provincial Key Laboratory of Food, Nutrition and Health, Sun Yat-sen University, Guangzhou, China
| | - Huilian Zhu
- Department of Nutrition, School of Public Health, Sun Yat-sen University, Guangzhou, China
- School of Public Health, Guangdong Provincial Key Laboratory of Food, Nutrition and Health, Sun Yat-sen University, Guangzhou, China
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Nakagawa T, Horiuchi K, Kagami K, Kondo S, Isaji M, Matsuhashi Y, Kitamura K, Adachi T, Chiba K. The alteration of LBX1 expression is associated with changes in parameters related to energy metabolism in mice. PLoS One 2024; 19:e0308445. [PMID: 39110747 PMCID: PMC11305531 DOI: 10.1371/journal.pone.0308445] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2024] [Accepted: 07/23/2024] [Indexed: 08/10/2024] Open
Abstract
The LBX1 gene is located near a single nucleotide polymorphism that is highly associated with susceptibility to adolescent idiopathic scoliosis and is considered one of the strongest candidate genes involved in the pathogenesis of this condition. We have previously found that loss of LBX1 from skeletal muscle results not only in spinal deformity but also in lean body mass, suggesting a potential role for LBX1 in energy metabolism. The purpose of the present study was to test this hypothesis by analyzing the phenotype of mice lacking LBX1 in skeletal muscle with a focus on energy metabolism. We found that loss of LBX1 rendered mice more resistant to high-fat diet-induced obesity, despite comparable food intake between mutant and control mice. Notably, the mutant mice exhibited improved glucose tolerance, increased maximal aerobic capacity, and higher core body temperature compared to control mice. In addition, we found that overexpression of LBX1 decreased glucose uptake in cultured cells. Taken together, our data show that LBX1 functions as a negative regulator of energy metabolism and that loss of LBX1 from skeletal muscle increases systemic energy expenditure resulting in lean body mass. The present study thus suggests a potential association between LBX1 dysfunction and lean body mass in patients with adolescent idiopathic scoliosis.
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Affiliation(s)
- Takahiro Nakagawa
- Department of Orthopedic Surgery, National Defense Medical College, Tokorozawa, Saitama, Japan
| | - Keisuke Horiuchi
- Department of Orthopedic Surgery, National Defense Medical College, Tokorozawa, Saitama, Japan
| | - Kazuki Kagami
- Division of Cardiovascular Medicine, Department of Internal Medicine I, National Defense Medical College, Tokorozawa, Saitama, Japan
| | - Shinya Kondo
- Department of Orthopedic Surgery, National Defense Medical College, Tokorozawa, Saitama, Japan
| | - Masashi Isaji
- Department of Orthopedic Surgery, National Defense Medical College, Tokorozawa, Saitama, Japan
| | - Yusuke Matsuhashi
- Department of Orthopedic Surgery, National Defense Medical College, Tokorozawa, Saitama, Japan
| | - Kazuya Kitamura
- Department of Orthopedic Surgery, National Defense Medical College, Tokorozawa, Saitama, Japan
| | - Takeshi Adachi
- Division of Cardiovascular Medicine, Department of Internal Medicine I, National Defense Medical College, Tokorozawa, Saitama, Japan
| | - Kazuhiro Chiba
- Department of Orthopedic Surgery, National Defense Medical College, Tokorozawa, Saitama, Japan
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Herbert CJ, Labarre-Mariotte S, Cornu D, Sophie C, Panozzo C, Michel T, Dujardin G, Bonnefoy N. Translational activators and mitoribosomal isoforms cooperate to mediate mRNA-specific translation in Schizosaccharomyces pombe mitochondria. Nucleic Acids Res 2021; 49:11145-11166. [PMID: 34634819 PMCID: PMC8565316 DOI: 10.1093/nar/gkab789] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2021] [Revised: 08/24/2021] [Accepted: 10/05/2021] [Indexed: 11/12/2022] Open
Abstract
Mitochondrial mRNAs encode key subunits of the oxidative phosphorylation complexes that produce energy for the cell. In Saccharomyces cerevisiae, mitochondrial translation is under the control of translational activators, specific to each mRNA. In Schizosaccharomyces pombe, which more closely resembles the human system by its mitochondrial DNA structure and physiology, most translational activators appear to be either lacking, or recruited for post-translational functions. By combining bioinformatics, genetic and biochemical approaches we identified two interacting factors, Cbp7 and Cbp8, controlling Cytb production in S. pombe. We show that their absence affects cytb mRNA stability and impairs the detection of the Cytb protein. We further identified two classes of Cbp7/Cbp8 partners and showed that they modulated Cytb or Cox1 synthesis. First, two isoforms of bS1m, a protein of the small mitoribosomal subunit, that appear mutually exclusive and confer translational specificity. Second, a complex of four proteins dedicated to Cox1 synthesis, which includes an RNA helicase that interacts with the mitochondrial ribosome. Our results suggest that S. pombe contains, in addition to complexes of translational activators, a heterogeneous population of mitochondrial ribosomes that could specifically modulate translation depending on the mRNA translated, in order to optimally balance the production of different respiratory complex subunits.
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Affiliation(s)
- Christopher J Herbert
- Institute of Integrative Biology of the Cell (I2BC), CEA, CNRS, Univ Paris-Sud, Université Paris-Saclay, 91198, Gif-sur-Yvette cedex, France
| | - Sylvie Labarre-Mariotte
- Institute of Integrative Biology of the Cell (I2BC), CEA, CNRS, Univ Paris-Sud, Université Paris-Saclay, 91198, Gif-sur-Yvette cedex, France
| | - David Cornu
- Institute of Integrative Biology of the Cell (I2BC), CEA, CNRS, Univ Paris-Sud, Université Paris-Saclay, 91198, Gif-sur-Yvette cedex, France
| | - Cyrielle Sophie
- Institute of Integrative Biology of the Cell (I2BC), CEA, CNRS, Univ Paris-Sud, Université Paris-Saclay, 91198, Gif-sur-Yvette cedex, France
| | - Cristina Panozzo
- Institute of Integrative Biology of the Cell (I2BC), CEA, CNRS, Univ Paris-Sud, Université Paris-Saclay, 91198, Gif-sur-Yvette cedex, France
| | - Thomas Michel
- Institute of Integrative Biology of the Cell (I2BC), CEA, CNRS, Univ Paris-Sud, Université Paris-Saclay, 91198, Gif-sur-Yvette cedex, France
| | - Geneviève Dujardin
- Institute of Integrative Biology of the Cell (I2BC), CEA, CNRS, Univ Paris-Sud, Université Paris-Saclay, 91198, Gif-sur-Yvette cedex, France
| | - Nathalie Bonnefoy
- Institute of Integrative Biology of the Cell (I2BC), CEA, CNRS, Univ Paris-Sud, Université Paris-Saclay, 91198, Gif-sur-Yvette cedex, France
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Baleva MV, Piunova UE, Chicherin IV, Krasavina DG, Levitskii SA, Kamenski PA. Yeast Translational Activator Mss51p and Human ZMYND17 - Two Proteins with a Common Origin, but Different Functions. BIOCHEMISTRY. BIOKHIMIIA 2021; 86:1151-1161. [PMID: 34565318 DOI: 10.1134/s0006297921090108] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/18/2021] [Revised: 07/19/2021] [Accepted: 07/19/2021] [Indexed: 11/23/2022]
Abstract
Despite its similarity to protein biosynthesis in bacteria, translation in the mitochondria of modern eukaryotes has several unique features, such as the necessity for coordination of translation of mitochondrial mRNAs encoding proteins of the electron transport chain complexes with translation of other protein components of these complexes in the cytosol. In the mitochondria of baker's yeast Saccharomyces cerevisiae, this coordination is carried out by a system of translational activators that predominantly interact with the 5'-untranslated regions of mitochondrial mRNAs. No such system has been found in human mitochondria, except a single identified translational activator, TACO1. Here, we studied the role of the ZMYND17 gene, an ortholog of the yeast gene for the translational activator Mss51p, on the mitochondrial translation in human cells. Deletion of the ZMYND17 gene did not affect translation in the mitochondria, but led to the decrease in the cytochrome c oxidase activity and increase in the amount of free F1 subunit of ATP synthase. We also investigated the evolutionary history of Mss51p and ZMYND17 and suggested a possible mechanism for the divergence of functions of these orthologous proteins.
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Affiliation(s)
- Maria V Baleva
- Department of Molecular Biology, Faculty of Biology, Lomonosov Moscow State University, Moscow, 119234, Russia
| | - Uliyana E Piunova
- Department of Molecular Biology, Faculty of Biology, Lomonosov Moscow State University, Moscow, 119234, Russia
| | - Ivan V Chicherin
- Department of Molecular Biology, Faculty of Biology, Lomonosov Moscow State University, Moscow, 119234, Russia
| | - Darya G Krasavina
- Department of Molecular Biology, Faculty of Biology, Lomonosov Moscow State University, Moscow, 119234, Russia
| | - Sergey A Levitskii
- Department of Molecular Biology, Faculty of Biology, Lomonosov Moscow State University, Moscow, 119234, Russia.
| | - Piotr A Kamenski
- Department of Molecular Biology, Faculty of Biology, Lomonosov Moscow State University, Moscow, 119234, Russia
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