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Chen R, Zheng A, Wang Y, Guo L, Dou H, Lu L, Rafiq M, Li P, Chen X, Xiao Q. Salvianolic acid B improves mitochondrial dysfunction of septic cardiomyopathy via enhancing ATF5-mediated mitochondrial unfolded protein response. Toxicol Appl Pharmacol 2024; 491:117072. [PMID: 39153513 DOI: 10.1016/j.taap.2024.117072] [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: 04/22/2024] [Revised: 08/06/2024] [Accepted: 08/13/2024] [Indexed: 08/19/2024]
Abstract
AIMS Septic cardiomyopathy is characterized by impaired contractile function and mitochondrial activity dysregulation. Salvianolic acid B (Sal B) is a potent therapeutic compound derived from the traditional Chinese medicine Salvia miltiorrhiza. This study explored the protective effects of Sal B on septic heart injury, emphasizing the mitochondrial unfolded protein response (UPRmt). MATERIALS AND METHODS An in vivo mouse model of lipopolysaccharide (LPS)-induced heart injury was utilized to assess Sal B's protective role in septic cardiomyopathy. Additionally, cell models stimulated by LPS were developed to investigate the mechanisms of Sal B on UPRmt. Quantitative polymerase chain reaction, western blotting, immunohistochemistry, and immunofluorescence were employed for molecular analysis. RESULTS Sal B, administered at doses of 10, 30, and 60 mg/kg, demonstrated protective effects on cardiac contractile function, reduced heart inflammation, and mitigated cardiac injury in LPS-exposed mice. In cardiomyocytes, LPS induced apoptosis, elevated mitochondrial ROS levels, promoted mitochondrial fission, and decreased mitochondrial membrane potential, all of which were alleviated by Sal B. Mechanistically, Sal B was found to induce UPRmt both in vivo and in vitro. ATF5, identified as a UPRmt activator, was modulated by LPS and Sal B, resulting in increased ATF5 expression and its translocation from the cytosol to the nucleus. ATF5-siRNA delivery reversed UPRmt upregulation, exacerbating mitochondrial dysfunction in LPS-stimulated cardiomyocytes and counteracting the mitochondrial function enhancement in Sal B-treated cardiomyocytes. CONCLUSIONS This study provides evidence that Sal B confers cardiac protection by enhancing UPRmt, highlighting its potential as a therapeutic approach for mitigating mitochondrial dysfunction in septic cardiomyopathy.
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Affiliation(s)
- Renshan Chen
- Guangzhou Hospital of Integrated Traditional and Western Medicine, 87 Yingbin Avenue, Guangzhou 510800, PR China
| | - Anran Zheng
- Guangzhou Municipal and Guangdong Provincial Key Laboratory of Molecular Target & Clinical Pharmacology, The NMPA and State Key Laboratory of Respiratory Disease, School of Pharmaceutical Sciences and the Fifth Affiliated Hospital, Guangzhou Medical University, 1 Xinzao Road, Panyu District, Guangzhou 511436, PR China; Department of Pharmacology, School of Pharmaceutical Sciences, Guangzhou Medical University, 1 Xinzao Road, Panyu District, Guangzhou 511436, PR China
| | - Yunjing Wang
- Guangzhou Municipal and Guangdong Provincial Key Laboratory of Molecular Target & Clinical Pharmacology, The NMPA and State Key Laboratory of Respiratory Disease, School of Pharmaceutical Sciences and the Fifth Affiliated Hospital, Guangzhou Medical University, 1 Xinzao Road, Panyu District, Guangzhou 511436, PR China; Department of Pharmacology, School of Pharmaceutical Sciences, Guangzhou Medical University, 1 Xinzao Road, Panyu District, Guangzhou 511436, PR China
| | - Liyou Guo
- Guangzhou Municipal and Guangdong Provincial Key Laboratory of Molecular Target & Clinical Pharmacology, The NMPA and State Key Laboratory of Respiratory Disease, School of Pharmaceutical Sciences and the Fifth Affiliated Hospital, Guangzhou Medical University, 1 Xinzao Road, Panyu District, Guangzhou 511436, PR China; Department of Pharmacology, School of Pharmaceutical Sciences, Guangzhou Medical University, 1 Xinzao Road, Panyu District, Guangzhou 511436, PR China
| | - Huaqian Dou
- Guangzhou Municipal and Guangdong Provincial Key Laboratory of Molecular Target & Clinical Pharmacology, The NMPA and State Key Laboratory of Respiratory Disease, School of Pharmaceutical Sciences and the Fifth Affiliated Hospital, Guangzhou Medical University, 1 Xinzao Road, Panyu District, Guangzhou 511436, PR China; Department of Pharmacology, School of Pharmaceutical Sciences, Guangzhou Medical University, 1 Xinzao Road, Panyu District, Guangzhou 511436, PR China
| | - Liangyan Lu
- Guangzhou Municipal and Guangdong Provincial Key Laboratory of Molecular Target & Clinical Pharmacology, The NMPA and State Key Laboratory of Respiratory Disease, School of Pharmaceutical Sciences and the Fifth Affiliated Hospital, Guangzhou Medical University, 1 Xinzao Road, Panyu District, Guangzhou 511436, PR China; Department of Pharmacology, School of Pharmaceutical Sciences, Guangzhou Medical University, 1 Xinzao Road, Panyu District, Guangzhou 511436, PR China
| | - Muhammad Rafiq
- Department of Biosciences, COMSATS University Islamabad, Park Road, Tarlai Kalan, Islamabad 45550, Pakistan
| | - Peihua Li
- Guangzhou Municipal and Guangdong Provincial Key Laboratory of Molecular Target & Clinical Pharmacology, The NMPA and State Key Laboratory of Respiratory Disease, School of Pharmaceutical Sciences and the Fifth Affiliated Hospital, Guangzhou Medical University, 1 Xinzao Road, Panyu District, Guangzhou 511436, PR China; Department of Pharmacology, School of Pharmaceutical Sciences, Guangzhou Medical University, 1 Xinzao Road, Panyu District, Guangzhou 511436, PR China
| | - Xiuhui Chen
- Key Laboratory of Precision Pharmacy and Pharmaceutical Basic Research, Department of Pharmacy & the Eighth People's Hospital of Dongguan, Dongguan Children's Hospital Affiliated to Guangdong Medical University, 68 South Xihu Third Road, Shilong Town, Dongguan 523000, China.
| | - Qing Xiao
- Guangzhou Municipal and Guangdong Provincial Key Laboratory of Molecular Target & Clinical Pharmacology, The NMPA and State Key Laboratory of Respiratory Disease, School of Pharmaceutical Sciences and the Fifth Affiliated Hospital, Guangzhou Medical University, 1 Xinzao Road, Panyu District, Guangzhou 511436, PR China; Department of Pharmacology, School of Pharmaceutical Sciences, Guangzhou Medical University, 1 Xinzao Road, Panyu District, Guangzhou 511436, PR China.
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2
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Salman B, Bon E, Delers P, Cottin S, Pasho E, Ciura S, Sapaly D, Lefebvre S. Understanding the Role of the SMN Complex Component GEMIN5 and Its Functional Relationship with Demethylase KDM6B in the Flunarizine-Mediated Neuroprotection of Motor Neuron Disease Spinal Muscular Atrophy. Int J Mol Sci 2024; 25:10039. [PMID: 39337533 PMCID: PMC11431868 DOI: 10.3390/ijms251810039] [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: 08/28/2024] [Revised: 09/13/2024] [Accepted: 09/14/2024] [Indexed: 09/30/2024] Open
Abstract
Dysregulated RNA metabolism caused by SMN deficiency leads to motor neuron disease spinal muscular atrophy (SMA). Current therapies improve patient outcomes but achieve no definite cure, prompting renewed efforts to better understand disease mechanisms. The calcium channel blocker flunarizine improves motor function in Smn-deficient mice and can help uncover neuroprotective pathways. Murine motor neuron-like NSC34 cells were used to study the molecular cell-autonomous mechanism. Following RNA and protein extraction, RT-qPCR and immunodetection experiments were performed. The relationship between flunarizine mRNA targets and RNA-binding protein GEMIN5 was explored by RNA-immunoprecipitation. Flunarizine increases demethylase Kdm6b transcripts across cell cultures and mouse models. It causes, in NSC34 cells, a temporal expression of GEMIN5 and KDM6B. GEMIN5 binds to flunarizine-modulated mRNAs, including Kdm6b transcripts. Gemin5 depletion reduces Kdm6b mRNA and protein levels and hampers responses to flunarizine, including neurite extension in NSC34 cells. Moreover, flunarizine increases the axonal extension of motor neurons derived from SMA patient-induced pluripotent stem cells. Finally, immunofluorescence studies of spinal cord motor neurons in Smn-deficient mice reveal that flunarizine modulates the expression of KDM6B and its target, the motor neuron-specific transcription factor HB9, driving motor neuron maturation. Our study reveals GEMIN5 regulates Kdm6b expression with implications for motor neuron diseases and therapy.
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Affiliation(s)
- Badih Salman
- T3S, INSERM UMR1124, Faculté des Sciences Fondamentales et Biomédicales, Université Paris Cité, F-75006 Paris, France
| | - Emeline Bon
- T3S, INSERM UMR1124, Faculté des Sciences Fondamentales et Biomédicales, Université Paris Cité, F-75006 Paris, France
| | - Perrine Delers
- T3S, INSERM UMR1124, Faculté des Sciences Fondamentales et Biomédicales, Université Paris Cité, F-75006 Paris, France
| | - Steve Cottin
- T3S, INSERM UMR1124, Faculté des Sciences Fondamentales et Biomédicales, Université Paris Cité, F-75006 Paris, France
| | - Elena Pasho
- INSERM UMR1163, Institut Imagine, Université Paris Cité, F-75015 Paris, France
| | - Sorana Ciura
- INSERM UMR1163, Institut Imagine, Université Paris Cité, F-75015 Paris, France
| | - Delphine Sapaly
- T3S, INSERM UMR1124, Faculté des Sciences Fondamentales et Biomédicales, Université Paris Cité, F-75006 Paris, France
| | - Suzie Lefebvre
- T3S, INSERM UMR1124, Faculté des Sciences Fondamentales et Biomédicales, Université Paris Cité, F-75006 Paris, France
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3
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Hua X, Wang D. 6-PPD quinone at environmentally relevant concentrations induced damage on longevity in C. elegans: Mechanistic insight from inhibition in mitochondrial UPR response. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 954:176275. [PMID: 39278487 DOI: 10.1016/j.scitotenv.2024.176275] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/15/2024] [Revised: 09/09/2024] [Accepted: 09/12/2024] [Indexed: 09/18/2024]
Abstract
6-PPD quinone (6-PPDQ) exists widely in water environment media, causing acute lethality to some aquatic species. Long-term exposure to 6-PPDQ reduced the lifespan of Caenorhabditis elegans. However, the molecular basis for mitochondrial control of 6-PPDQ toxicity remains largely unclear. Using HSP-6 as marker of mitochondrial unfolded protein response (mt UPR), we observed activation of mt UPR by 0.1 and 1 μg/L 6-PPDQ and inhibition in mt UPR by 10 μg/L 6-PPDQ. Additionally, increased atfs-1, ubl-5, and dve-1 expressions were caused by 0.1 and 1 μg/L 6-PPDQ and decreased expressions of these genes were induced by 10 μg/L 6-PPDQ. Neuronal and intestinal RNA interference (RNAi) of hsp-6 caused susceptibility to 6-PPDQ toxicity on longevity, and atfs-1, ubl-5, and dve-1 acted in neurons and intestine to modulate mt UPR and 6-PPDQ toxicity on longevity. Meanwhile, 6-PPDQ (1 and 10 μg/L) increased expressions of histone methyltransferase genes met-2 and set-6, and decreased expressions of histone demethylase genes jmjd-1.2 and jmjd-3.1. Neuronal RNAi of set-6 and intestinal RNAi of met-2 accelerated hsp-6, atfs-1, ubl-5, and dve-1 expressions and extended lifespan of 6-PPDQ exposed nematodes. In contrast, neuronal RNAi of jmjd-1.2 and jmjd-3.1 and intestinal RNAi of jmjd-1.2 suppressed these 4 gene expressions and reduced lifespan of 6-PPDQ exposed nematodes o. In nematodes, RNAi of hsp-6 could also enhance mitochondrial dysfunction and mitochondrial reactive oxygen species (ROS) induced by 6-PPDQ. Therefore, 6-PPDQ caused damage on longevity was associated with suppression in mt UPR, which was under regulation of certain histone methylation related signals.
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Affiliation(s)
- Xin Hua
- Key Laboratory of Environmental Medicine Engineering of Ministry of Education, Medical School, Southeast University, Nanjing, China
| | - Dayong Wang
- Key Laboratory of Environmental Medicine Engineering of Ministry of Education, Medical School, Southeast University, Nanjing, China; Shenzhen Ruipuxun Academy for Stem Cell & Regenerative Medicine, Shenzhen, China.
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4
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Zhang X, Fan Y, Tan K. A bird's eye view of mitochondrial unfolded protein response in cancer: mechanisms, progression and further applications. Cell Death Dis 2024; 15:667. [PMID: 39261452 PMCID: PMC11390889 DOI: 10.1038/s41419-024-07049-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2024] [Revised: 09/01/2024] [Accepted: 09/02/2024] [Indexed: 09/13/2024]
Abstract
Mitochondria are essential organelles that play critical roles in energy metabolism, apoptosis and various cellular processes. Accumulating evidence suggests that mitochondria are also involved in cancer development and progression. The mitochondrial unfolded protein response (UPRmt) is a complex cellular process that is activated when the protein-folding capacity of the mitochondria is overwhelmed. The core machinery of UPRmt includes upstream regulatory factors, mitochondrial chaperones and proteases. These components work together to eliminate misfolded proteins, increase protein-folding capacity, and restore mitochondrial function. Recent studies have shown that UPRmt is dysregulated in various cancers and contributes to tumor initiation, growth, metastasis, and therapeutic resistance. Considering the pivotal role of the UPRmt in oncogenesis, numerous compounds and synthetic drugs targeting UPRmt-related components induce cancer cell death and suppress tumor growth. In this review, we comprehensively summarize recent studies on the molecular mechanisms of UPRmt activation in C. elegans and mammals and elucidate the conceptual framework, functional aspects, and implications of the UPRmt for cancer therapy. In summary, we paint a developmental landscape of the UPRmt in different types of cancer and offer valuable insights for the development of novel cancer treatment strategies by targeting the UPRmt.
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Affiliation(s)
- Xinyu Zhang
- Ministry of Education Key Laboratory of Molecular and Cellular Biology; Hebei Research Center of the Basic Discipline of Cell Biology, Hebei Collaborative Innovation Center for Eco-Environment, Hebei Province Key Laboratory of Animal Physiology, Biochemistry and Molecular Biology, College of Life Sciences, Hebei Normal University, Shijiazhuang, Hebei, China
| | - Yumei Fan
- Ministry of Education Key Laboratory of Molecular and Cellular Biology; Hebei Research Center of the Basic Discipline of Cell Biology, Hebei Collaborative Innovation Center for Eco-Environment, Hebei Province Key Laboratory of Animal Physiology, Biochemistry and Molecular Biology, College of Life Sciences, Hebei Normal University, Shijiazhuang, Hebei, China
| | - Ke Tan
- Ministry of Education Key Laboratory of Molecular and Cellular Biology; Hebei Research Center of the Basic Discipline of Cell Biology, Hebei Collaborative Innovation Center for Eco-Environment, Hebei Province Key Laboratory of Animal Physiology, Biochemistry and Molecular Biology, College of Life Sciences, Hebei Normal University, Shijiazhuang, Hebei, China.
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5
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Han X, Gao Y, Chen X, Bian C, Chen W, Yan F. Mitochondria UPR stimulation by pelargonidin-3-glucoside contributes to ameliorating lipid accumulation under copper exposure. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 942:173603. [PMID: 38821275 DOI: 10.1016/j.scitotenv.2024.173603] [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: 02/22/2024] [Revised: 05/24/2024] [Accepted: 05/26/2024] [Indexed: 06/02/2024]
Abstract
Intensification of copper pollution in the environment has led to its excessive accumulation in humans, causing oxidative stress and lipid metabolism disorders. It is necessary to look for effective targets and safe methods to alleviate copper toxicity. Pelargonidin-3-glucoside (Pg3G) is a natural anthocyanin with metal ion chelating ability and multiple physiological activities. In this study, lipid accumulation was investigated under copper exposure in Caenorhabditis elegans which can be improved by Pg3G. Transcriptome analysis revealed that differentially expressed genes are enriched in lipid metabolism and protein folding/degradation. Pg3G activated mitochondrial unfold protein response (UPRmt) to mitigate mitochondrial damage caused by copper and regulated the expression of genes involved in lipid absorption, transport, and synthesis, thereby reducing lipid levels in C. elegans. This improvement disappeared in the ubl-5 knockout strain, indicating that ubl-5 is one target of Pg3G. Meanwhile, in HepG2 cells, Pg3G enhanced the cellular antioxidant capacity by activating UPRmt for maintaining mitochondrial homeostasis, followed by inhibition of excessive lipid accumulation. Overall, these results suggested that UPRmt activation can be a strategy for mitigating lipid disorders induced by copper and Pg3G with excellent ability to resist oxidative stress specially targeted for ubl-5 has a promising application in controlling copper contamination.
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Affiliation(s)
- Xiao Han
- Department of Food Science and Nutrition, College of Biosystems Engineering and Food Science, Zhejiang University, Hangzhou 310058, China
| | - Yufang Gao
- Department of Food Science and Nutrition, College of Biosystems Engineering and Food Science, Zhejiang University, Hangzhou 310058, China
| | - Xinyi Chen
- Department of Food Science and Nutrition, College of Biosystems Engineering and Food Science, Zhejiang University, Hangzhou 310058, China
| | - Cheng Bian
- Department of Food Science and Nutrition, College of Biosystems Engineering and Food Science, Zhejiang University, Hangzhou 310058, China
| | - Wei Chen
- Department of Food Science and Nutrition, College of Biosystems Engineering and Food Science, Zhejiang University, Hangzhou 310058, China
| | - Fujie Yan
- Department of Food Science and Nutrition, College of Biosystems Engineering and Food Science, Zhejiang University, Hangzhou 310058, China.
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Iordache F, Petcu ACI, Alexandru DM. Genetic and Epigenetic Interactions Involved in Senescence of Stem Cells. Int J Mol Sci 2024; 25:9708. [PMID: 39273655 PMCID: PMC11396476 DOI: 10.3390/ijms25179708] [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: 08/07/2024] [Revised: 09/04/2024] [Accepted: 09/05/2024] [Indexed: 09/15/2024] Open
Abstract
Cellular senescence is a permanent condition of cell cycle arrest caused by a progressive shortening of telomeres defined as replicative senescence. Stem cells may also undergo an accelerated senescence response known as premature senescence, distinct from telomere shortening, as a response to different stress agents. Various treatment protocols have been developed based on epigenetic changes in cells throughout senescence, using different drugs and antioxidants, senolytic vaccines, or the reprogramming of somatic senescent cells using Yamanaka factors. Even with all the recent advancements, it is still unknown how different epigenetic modifications interact with genetic profiles and how other factors such as microbiota physiological conditions, psychological states, and diet influence the interaction between genetic and epigenetic pathways. The aim of this review is to highlight the new epigenetic modifications that are involved in stem cell senescence. Here, we review recent senescence-related epigenetic alterations such as DNA methylation, chromatin remodeling, histone modification, RNA modification, and non-coding RNA regulation outlining new possible targets for the therapy of aging-related diseases. The advantages and disadvantages of the animal models used in the study of cellular senescence are also briefly presented.
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Affiliation(s)
- Florin Iordache
- Biochemistry Disciplines, Faculty of Veterinary Medicine, University of Agronomic Sciences and Veterinary Medicine, 050097 Bucharest, Romania
- Advanced Research Center for Innovative Materials, Products and Processes CAMPUS, Politehnica University, 060042 Bucharest, Romania
| | - Adriana Cornelia Ionescu Petcu
- Biochemistry Disciplines, Faculty of Veterinary Medicine, University of Agronomic Sciences and Veterinary Medicine, 050097 Bucharest, Romania
| | - Diana Mihaela Alexandru
- Pharmacology and Pharmacy Disciplines, Faculty of Veterinary Medicine, University of Agronomic Sciences and Veterinary Medicine, 050097 Bucharest, Romania
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Oh S, Janknecht R. Versatile JMJD proteins: juggling histones and much more. Trends Biochem Sci 2024; 49:804-818. [PMID: 38926050 PMCID: PMC11380596 DOI: 10.1016/j.tibs.2024.06.009] [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: 04/27/2024] [Revised: 06/09/2024] [Accepted: 06/11/2024] [Indexed: 06/28/2024]
Abstract
Jumonji C domain-containing (JMJD) proteins are found in bacteria, fungi, animals, and plants. They belong to the 2-oxoglutarate-dependent oxygenase superfamily and are endowed with various enzymatic activities, including demethylation of histones and hydroxylation of non-histone proteins. Many JMJD proteins are involved in the epigenetic control of gene expression, yet they also modulate a myriad other cellular processes. In this review we focus on the 33 human JMJD proteins and their established and controversial catalytic properties, survey their epigenetic and non-epigenetic functions, emphasize their contribution to sex-specific disease differences, and highlight how they sense metabolic changes. All this underlines not only their key roles in development and homeostasis, but also that JMJD proteins are destined to become drug targets in multiple diseases.
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Affiliation(s)
- Sangphil Oh
- Department of Cell Biology, University of Oklahoma Health Sciences Center, Oklahoma City, OK 73104, USA; Stephenson Cancer Center, University of Oklahoma Health Sciences Center, Oklahoma City, OK 73104, USA.
| | - Ralf Janknecht
- Department of Cell Biology, University of Oklahoma Health Sciences Center, Oklahoma City, OK 73104, USA; Stephenson Cancer Center, University of Oklahoma Health Sciences Center, Oklahoma City, OK 73104, USA; Department of Pathology, University of Oklahoma Health Sciences Center, Oklahoma City, OK 73104, USA.
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Liang R, Zhu L, Huang Y, Chen J, Tang Q. Mitochondria: fundamental characteristics, challenges, and impact on aging. Biogerontology 2024:10.1007/s10522-024-10132-8. [PMID: 39196438 DOI: 10.1007/s10522-024-10132-8] [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: 07/09/2024] [Accepted: 08/20/2024] [Indexed: 08/29/2024]
Abstract
As one of the most vital organelles within biological cells, mitochondria hold an irreplaceable status and play crucial roles in various diseases. Research and therapies targeting mitochondria have achieved significant progress in numerous conditions. Throughout an organism's lifespan, mitochondrial dynamics persist continuously, and due to their inherent characteristics and various external factors, mitochondria are highly susceptible to damage. This susceptibility is particularly evident during aging, where the decline in biological function is closely intertwined with mitochondrial dysfunction. Despite being an ancient and enigmatic organelle, much remains unknown about mitochondria. Here, we will explore the past and present knowledge of mitochondria, providing a comprehensive review of their intrinsic properties and interactions with nuclear DNA, as well as the challenges and impacts they face during the aging process.
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Affiliation(s)
- Runyu Liang
- Heilongjiang University of Chinese Medicine, Harbin, China
| | - Luwen Zhu
- Second Affiliated Hospital of Heilongjiang University of Chinese Medicine, Harbin, China
| | - Yongyin Huang
- Heilongjiang University of Chinese Medicine, Harbin, China
| | - Jia Chen
- Heilongjiang University of Chinese Medicine, Harbin, China
| | - Qiang Tang
- Second Affiliated Hospital of Heilongjiang University of Chinese Medicine, Harbin, China.
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9
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Shen K, Durieux J, Mena CG, Webster BM, Tsui CK, Zhang H, Joe L, Berendzen KM, Dillin A. The germline coordinates mitokine signaling. Cell 2024; 187:4605-4620.e17. [PMID: 38959891 DOI: 10.1016/j.cell.2024.06.010] [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: 10/04/2023] [Revised: 04/01/2024] [Accepted: 06/08/2024] [Indexed: 07/05/2024]
Abstract
The ability of mitochondria to coordinate stress responses across tissues is critical for health. In C. elegans, neurons experiencing mitochondrial stress elicit an inter-tissue signaling pathway through the release of mitokine signals, such as serotonin or the Wnt ligand EGL-20, which activate the mitochondrial unfolded protein response (UPRMT) in the periphery to promote organismal health and lifespan. We find that germline mitochondria play a surprising role in neuron-to-periphery UPRMT signaling. Specifically, we find that germline mitochondria signal downstream of neuronal mitokines, Wnt and serotonin, and upstream of lipid metabolic pathways in the periphery to regulate UPRMT activation. We also find that the germline tissue itself is essential for UPRMT signaling. We propose that the germline has a central signaling role in coordinating mitochondrial stress responses across tissues, and germline mitochondria play a defining role in this coordination because of their inherent roles in germline integrity and inter-tissue signaling.
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Affiliation(s)
- Koning Shen
- Department of Molecular and Cell Biology, University of California, Berkeley, Berkeley, CA 94720, USA
| | - Jenni Durieux
- Department of Molecular and Cell Biology, University of California, Berkeley, Berkeley, CA 94720, USA; Howard Hughes Medical Institute, University of California, Berkeley, Berkeley, CA 94720, USA
| | - Cesar G Mena
- Department of Molecular and Cell Biology, University of California, Berkeley, Berkeley, CA 94720, USA; Howard Hughes Medical Institute, University of California, Berkeley, Berkeley, CA 94720, USA
| | - Brant M Webster
- Department of Molecular and Cell Biology, University of California, Berkeley, Berkeley, CA 94720, USA
| | - C Kimberly Tsui
- Department of Molecular and Cell Biology, University of California, Berkeley, Berkeley, CA 94720, USA
| | - Hanlin Zhang
- Department of Molecular and Cell Biology, University of California, Berkeley, Berkeley, CA 94720, USA
| | - Larry Joe
- Department of Molecular and Cell Biology, University of California, Berkeley, Berkeley, CA 94720, USA; Howard Hughes Medical Institute, University of California, Berkeley, Berkeley, CA 94720, USA
| | - Kristen M Berendzen
- Weill Institute for Neurosciences, University of California, San Francisco, San Francisco, CA 94158, USA
| | - Andrew Dillin
- Department of Molecular and Cell Biology, University of California, Berkeley, Berkeley, CA 94720, USA; Howard Hughes Medical Institute, University of California, Berkeley, Berkeley, CA 94720, USA; The Helen Wills Neuroscience Institute, University of California, Berkeley, Berkeley, CA 94720, USA.
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10
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Liu Y, Lu S, Yang J, Yang Y, Jiao L, Hu J, Li Y, Yang F, Pang Y, Zhao Y, Gao Y, Liu W, Shu P, Ge W, He Z, Peng X. Analysis of the aging-related biomarker in a nonhuman primate model using multilayer omics. BMC Genomics 2024; 25:639. [PMID: 38926642 PMCID: PMC11209966 DOI: 10.1186/s12864-024-10556-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2024] [Accepted: 06/24/2024] [Indexed: 06/28/2024] Open
Abstract
BACKGROUND Aging is a prominent risk factor for diverse diseases; therefore, an in-depth understanding of its physiological mechanisms is required. Nonhuman primates, which share the closest genetic relationship with humans, serve as an ideal model for exploring the complex aging process. However, the potential of the nonhuman primate animal model in the screening of human aging markers is still not fully exploited. Multiomics analysis of nonhuman primate peripheral blood offers a promising approach to evaluate new therapies and biomarkers. This study explores aging-related biomarker through multilayer omics, including transcriptomics (mRNA, lncRNA, and circRNA) and proteomics (serum and serum-derived exosomes) in rhesus monkeys (Macaca mulatta). RESULTS Our findings reveal that, unlike mRNAs and circRNAs, highly expressed lncRNAs are abundant during the key aging period and are associated with cancer pathways. Comparative analysis highlighted exosomal proteins contain more types of proteins than serum proteins, indicating that serum-derived exosomes primarily regulate aging through metabolic pathways. Finally, eight candidate aging biomarkers were identified, which may serve as blood-based indicators for detecting age-related brain changes. CONCLUSIONS Our results provide a comprehensive understanding of nonhuman primate blood transcriptomes and proteomes, offering novel insights into the aging mechanisms for preventing or treating age-related diseases.
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Affiliation(s)
- Yunpeng Liu
- State Key Laboratory of Respiratory Health and Multimorbidity, National Center of Technology Innovation for Animal Model, National Human Diseases Animal Model Resource Center, NHC Key Laboratory of Comparative Medicine, Beijing Engineering Research Center for Experimental Animal Models of Human Critical Diseases, Institute of Laboratory Animal Sciences, CAMS & PUMC, Beijing, 100021, China
| | - Shuaiyao Lu
- Institute of Medical Biology, Chinese Academy of Medical Sciences, Peking Union Medical College, Kunming, 650031, China
| | - Jing Yang
- Institute of Medical Biology, Chinese Academy of Medical Sciences, Peking Union Medical College, Kunming, 650031, China
| | - Yun Yang
- Institute of Medical Biology, Chinese Academy of Medical Sciences, Peking Union Medical College, Kunming, 650031, China
| | - Li Jiao
- Institute of Medical Biology, Chinese Academy of Medical Sciences, Peking Union Medical College, Kunming, 650031, China
| | - Jingwen Hu
- Institute of Medical Biology, Chinese Academy of Medical Sciences, Peking Union Medical College, Kunming, 650031, China
| | - Yanyan Li
- Institute of Medical Biology, Chinese Academy of Medical Sciences, Peking Union Medical College, Kunming, 650031, China
| | - Fengmei Yang
- Institute of Medical Biology, Chinese Academy of Medical Sciences, Peking Union Medical College, Kunming, 650031, China
| | - Yunli Pang
- Institute of Medical Biology, Chinese Academy of Medical Sciences, Peking Union Medical College, Kunming, 650031, China
| | - Yuan Zhao
- Institute of Medical Biology, Chinese Academy of Medical Sciences, Peking Union Medical College, Kunming, 650031, China
| | - Yanpan Gao
- Department of Molecular Biology and Biochemistry, Institute of Basic Medical Sciences, Medical Primate Research Center, Neuroscience Center, CAMS & PUMC, Beijing, 100005, China
| | - Wei Liu
- Department of Molecular Biology and Biochemistry, Institute of Basic Medical Sciences, Medical Primate Research Center, Neuroscience Center, CAMS & PUMC, Beijing, 100005, China
| | - Pengcheng Shu
- Department of Molecular Biology and Biochemistry, Institute of Basic Medical Sciences, Medical Primate Research Center, Neuroscience Center, CAMS & PUMC, Beijing, 100005, China
| | - Wei Ge
- Department of Molecular Biology and Biochemistry, Institute of Basic Medical Sciences, Medical Primate Research Center, Neuroscience Center, CAMS & PUMC, Beijing, 100005, China
| | - Zhanlong He
- Institute of Medical Biology, Chinese Academy of Medical Sciences, Peking Union Medical College, Kunming, 650031, China.
| | - Xiaozhong Peng
- State Key Laboratory of Respiratory Health and Multimorbidity, National Center of Technology Innovation for Animal Model, National Human Diseases Animal Model Resource Center, NHC Key Laboratory of Comparative Medicine, Beijing Engineering Research Center for Experimental Animal Models of Human Critical Diseases, Institute of Laboratory Animal Sciences, CAMS & PUMC, Beijing, 100021, China.
- Institute of Medical Biology, Chinese Academy of Medical Sciences, Peking Union Medical College, Kunming, 650031, China.
- Department of Molecular Biology and Biochemistry, Institute of Basic Medical Sciences, Medical Primate Research Center, Neuroscience Center, CAMS & PUMC, Beijing, 100005, China.
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11
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Charmpilas N, Sotiriou A, Axarlis K, Tavernarakis N, Hoppe T. Reproductive regulation of the mitochondrial stress response in Caenorhabditis elegans. Cell Rep 2024; 43:114336. [PMID: 38852157 DOI: 10.1016/j.celrep.2024.114336] [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: 11/28/2023] [Revised: 04/22/2024] [Accepted: 05/23/2024] [Indexed: 06/11/2024] Open
Abstract
Proteome integrity is fundamental for cellular and organismal homeostasis. The mitochondrial unfolded protein response (UPRmt), a key component of the proteostasis network, is activated in a non-cell-autonomous manner in response to mitochondrial stress in distal tissues. However, the importance of inter-tissue communication for UPRmt inducibility under physiological conditions remains elusive. Here, we show that an intact germline is essential for robust UPRmt induction in the Caenorhabditis elegans somatic tissues. A series of nematode mutants with germline defects are unable to respond to genetic or chemical UPRmt inducers. Our genetic analysis suggests that reproductive signals, rather than germline stem cells, are responsible for somatic UPRmt induction. Consistent with this observation, we show that UPRmt is sexually dimorphic, as male nematodes are inherently unresponsive to mitochondrial stress. Our findings highlight a paradigm of germline-somatic communication and suggest that reproductive cessation is a primary cause of age-related UPRmt decline.
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Affiliation(s)
- Nikolaos Charmpilas
- Institute for Genetics, University of Cologne, Cologne, Germany; Cologne Excellence Cluster on Cellular Stress Responses in Aging-Associated Diseases (CECAD), University of Cologne, Cologne, Germany
| | - Aggeliki Sotiriou
- Institute of Molecular Biology and Biotechnology, Foundation for Research and Technology-Hellas, Heraklion, Greece; Division of Basic Sciences, School of Medicine, University of Crete, Heraklion, Greece
| | - Konstantinos Axarlis
- Institute of Molecular Biology and Biotechnology, Foundation for Research and Technology-Hellas, Heraklion, Greece
| | - Nektarios Tavernarakis
- Institute of Molecular Biology and Biotechnology, Foundation for Research and Technology-Hellas, Heraklion, Greece; Division of Basic Sciences, School of Medicine, University of Crete, Heraklion, Greece.
| | - Thorsten Hoppe
- Institute for Genetics, University of Cologne, Cologne, Germany; Cologne Excellence Cluster on Cellular Stress Responses in Aging-Associated Diseases (CECAD), University of Cologne, Cologne, Germany; Center for Molecular Medicine Cologne (CMMC), Faculty of Medicine and University Hospital of Cologne, Cologne, Germany.
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12
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Tataridas-Pallas N, Aman Y, Williams R, Chapman H, Cheng KJ, Gomez-Paredes C, Bates GP, Labbadia J. Mitochondrial clearance and increased HSF-1 activity are coupled to promote longevity in fasted Caenorhabditis elegans. iScience 2024; 27:109834. [PMID: 38784016 PMCID: PMC11112483 DOI: 10.1016/j.isci.2024.109834] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2023] [Revised: 03/27/2024] [Accepted: 04/24/2024] [Indexed: 05/25/2024] Open
Abstract
Fasting has emerged as a potent means of preserving tissue function with age in multiple model organisms. However, our understanding of the relationship between food removal and long-term health is incomplete. Here, we demonstrate that in the nematode worm Caenorhabditis elegans, a single period of early-life fasting is sufficient to selectively enhance HSF-1 activity, maintain proteostasis capacity and promote longevity without compromising fecundity. These effects persist even when food is returned, and are dependent on the mitochondrial sirtuin, SIR-2.2 and the H3K27me3 demethylase, JMJD-3.1. We find that increased HSF-1 activity upon fasting is associated with elevated SIR-2.2 levels, decreased mitochondrial copy number and reduced H3K27me3 levels at the promoters of HSF-1 target genes. Furthermore, consistent with our findings in worms, HSF-1 activity is also enhanced in muscle tissue from fasted mice, suggesting that the potentiation of HSF-1 is a conserved response to food withdrawal.
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Affiliation(s)
- Nikolaos Tataridas-Pallas
- Institute of Healthy Ageing, Department of Genetics, Evolution and Environment, Division of Biosciences, University College London, London WC1E 6BT, UK
| | - Yahyah Aman
- Institute of Healthy Ageing, Department of Genetics, Evolution and Environment, Division of Biosciences, University College London, London WC1E 6BT, UK
| | - Rhianna Williams
- Institute of Healthy Ageing, Department of Genetics, Evolution and Environment, Division of Biosciences, University College London, London WC1E 6BT, UK
| | - Hannah Chapman
- Institute of Healthy Ageing, Department of Genetics, Evolution and Environment, Division of Biosciences, University College London, London WC1E 6BT, UK
| | - Kevin J.H. Cheng
- Institute of Healthy Ageing, Department of Genetics, Evolution and Environment, Division of Biosciences, University College London, London WC1E 6BT, UK
| | - Casandra Gomez-Paredes
- Huntington’s Disease Centre, Department of Neurodegenerative Disease and UK Dementia Research Institute at UCL, Queen Square Institute of Neurology, University College London, London WC1N 3BG, UK
| | - Gillian P. Bates
- Huntington’s Disease Centre, Department of Neurodegenerative Disease and UK Dementia Research Institute at UCL, Queen Square Institute of Neurology, University College London, London WC1N 3BG, UK
| | - John Labbadia
- Institute of Healthy Ageing, Department of Genetics, Evolution and Environment, Division of Biosciences, University College London, London WC1E 6BT, UK
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13
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Donato L, Mordà D, Scimone C, Alibrandi S, D'Angelo R, Sidoti A. From powerhouse to regulator: The role of mitoepigenetics in mitochondrion-related cellular functions and human diseases. Free Radic Biol Med 2024; 218:105-119. [PMID: 38565400 DOI: 10.1016/j.freeradbiomed.2024.03.025] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/01/2024] [Revised: 03/26/2024] [Accepted: 03/30/2024] [Indexed: 04/04/2024]
Abstract
Beyond their crucial role in energy production, mitochondria harbor a distinct genome subject to epigenetic regulation akin to that of nuclear DNA. This paper delves into the nascent but rapidly evolving fields of mitoepigenetics and mitoepigenomics, exploring the sophisticated regulatory mechanisms governing mitochondrial DNA (mtDNA). These mechanisms encompass mtDNA methylation, the influence of non-coding RNAs (ncRNAs), and post-translational modifications of mitochondrial proteins. Together, these epigenetic modifications meticulously coordinate mitochondrial gene transcription, replication, and metabolism, thereby calibrating mitochondrial function in response to the dynamic interplay of intracellular needs and environmental stimuli. Notably, the dysregulation of mitoepigenetic pathways is increasingly implicated in mitochondrial dysfunction and a spectrum of human pathologies, including neurodegenerative diseases, cancer, metabolic disorders, and cardiovascular conditions. This comprehensive review synthesizes the current state of knowledge, emphasizing recent breakthroughs and innovations in the field. It discusses the potential of high-resolution mitochondrial epigenome mapping, the diagnostic and prognostic utility of blood or tissue mtDNA epigenetic markers, and the promising horizon of mitochondrial epigenetic drugs. Furthermore, it explores the transformative potential of mitoepigenetics and mitoepigenomics in precision medicine. Exploiting a theragnostic approach to maintaining mitochondrial allostasis, this paper underscores the pivotal role of mitochondrial epigenetics in charting new frontiers in medical science.
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Affiliation(s)
- Luigi Donato
- Department of Biomedical and Dental Sciences and Morphofunctional Imaging, Division of Medical Biotechnologies and Preventive Medicine, University of Messina, 98122, Messina, Italy; Department of Biomolecular Strategies, Genetics, Cutting-Edge Therapies, Euro-Mediterranean Institute of Science and Technology (I.E.ME.S.T.) 90139 Palermo, Italy.
| | - Domenico Mordà
- Department of Biomolecular Strategies, Genetics, Cutting-Edge Therapies, Euro-Mediterranean Institute of Science and Technology (I.E.ME.S.T.) 90139 Palermo, Italy; Department of Veterinary Sciences, University of Messina, 98122, Messina, Italy.
| | - Concetta Scimone
- Department of Biomedical and Dental Sciences and Morphofunctional Imaging, Division of Medical Biotechnologies and Preventive Medicine, University of Messina, 98122, Messina, Italy; Department of Biomolecular Strategies, Genetics, Cutting-Edge Therapies, Euro-Mediterranean Institute of Science and Technology (I.E.ME.S.T.) 90139 Palermo, Italy.
| | - Simona Alibrandi
- Department of Biomedical and Dental Sciences and Morphofunctional Imaging, Division of Medical Biotechnologies and Preventive Medicine, University of Messina, 98122, Messina, Italy; Department of Biomolecular Strategies, Genetics, Cutting-Edge Therapies, Euro-Mediterranean Institute of Science and Technology (I.E.ME.S.T.) 90139 Palermo, Italy.
| | - Rosalia D'Angelo
- Department of Biomedical and Dental Sciences and Morphofunctional Imaging, Division of Medical Biotechnologies and Preventive Medicine, University of Messina, 98122, Messina, Italy.
| | - Antonina Sidoti
- Department of Biomedical and Dental Sciences and Morphofunctional Imaging, Division of Medical Biotechnologies and Preventive Medicine, University of Messina, 98122, Messina, Italy.
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14
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Shrestha B, Nieminen AI, Matilainen O. Loss of the histone chaperone UNC-85/ASF1 inhibits the epigenome-mediated longevity and modulates the activity of one-carbon metabolism. Cell Stress Chaperones 2024; 29:392-403. [PMID: 38608859 PMCID: PMC11039323 DOI: 10.1016/j.cstres.2024.04.003] [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: 01/22/2024] [Revised: 04/05/2024] [Accepted: 04/08/2024] [Indexed: 04/14/2024] Open
Abstract
Histone H3/H4 chaperone anti-silencing function 1 (ASF1) is a conserved factor mediating nucleosomal assembly and disassembly, playing crucial roles in processes such as replication, transcription, and DNA repair. Nevertheless, its involvement in aging has remained unclear. Here, we utilized the model organism Caenorhabditis elegans to demonstrate that the loss of UNC-85, the homolog of ASF1, leads to a shortened lifespan in a multicellular organism. Furthermore, we show that UNC-85 is required for epigenome-mediated longevity, as knockdown of the histone H3 lysine K4 methyltransferase ash-2 does not extend the lifespan of unc-85 mutants. In this context, we found that the longevity-promoting ash-2 RNA interference enhances UNC-85 activity by increasing its nuclear localization. Finally, our data indicate that the loss of UNC-85 increases the activity of one-carbon metabolism, and that downregulation of the one-carbon metabolism component dao-3/MTHFD2 partially rescues the short lifespan of unc-85 mutants. Together, these findings reveal UNC-85/ASF1 as a modulator of the central metabolic pathway and a factor regulating a pro-longevity response, thus shedding light on a mechanism of how nucleosomal maintenance associates with aging.
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Affiliation(s)
- Bideep Shrestha
- The Molecular and Integrative Biosciences Research Programme, Faculty of Biological and Environmental Sciences, University of Helsinki, Helsinki, Finland
| | - Anni I Nieminen
- FIMM Metabolomics Unit, Institute for Molecular Medicine Finland, University of Helsinki, Helsinki, Finland
| | - Olli Matilainen
- The Molecular and Integrative Biosciences Research Programme, Faculty of Biological and Environmental Sciences, University of Helsinki, Helsinki, Finland.
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15
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Torres AK, Fleischhart V, Inestrosa NC. Mitochondrial unfolded protein response (UPR mt): what we know thus far. Front Cell Dev Biol 2024; 12:1405393. [PMID: 38882057 PMCID: PMC11176431 DOI: 10.3389/fcell.2024.1405393] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2024] [Accepted: 05/06/2024] [Indexed: 06/18/2024] Open
Abstract
Mitochondria are key organelles for the optimal function of the cell. Among their many functions, they maintain protein homeostasis through their own proteostatic machinery, which involves proteases and chaperones that regulate protein import and folding inside mitochondria. In the early 2000s, the mitochondrial unfolded protein response (UPRmt) was first described in mammalian cells. This stress response is activated by the accumulation of unfolded/misfolded proteins within the mitochondrial matrix, which results in the transmission of a signal to the nucleus to increase the expression of proteases and chaperones to address the abnormal mitochondrial protein load. After its discovery, this retrograde signaling pathway has also been described in other organisms of different complexities, suggesting that it is a conserved stress response. Although there are some specific differences among organisms, the mechanism of this stress response is mostly similar and involves the transmission of a signal from mitochondria to the nucleus that induces chromatin remodeling to allow the binding of specific transcription factors to the promoters of chaperones and proteases. In the last decade, proteins and signaling pathways that could be involved in the regulation of the UPRmt, including the Wnt signaling pathway, have been described. This minireview aims to summarize what is known about the mechanism of the UPRmt and its regulation, specifically in mammals and C. elegans.
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Affiliation(s)
- Angie K Torres
- Facultad de Ciencias Biológicas, Pontificia Universidad Católica de Chile, Santiago, Chile
- Centro de Excelencia en Biomedicina de Magallanes (CEBIMA), Escuela de Medicina, Universidad de Magallanes, Punta Arenas, Chile
| | - Veronika Fleischhart
- Centro de Excelencia en Biomedicina de Magallanes (CEBIMA), Escuela de Medicina, Universidad de Magallanes, Punta Arenas, Chile
| | - Nibaldo C Inestrosa
- Facultad de Ciencias Biológicas, Pontificia Universidad Católica de Chile, Santiago, Chile
- Centro de Excelencia en Biomedicina de Magallanes (CEBIMA), Escuela de Medicina, Universidad de Magallanes, Punta Arenas, Chile
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16
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Lai C, Xu L, Dai S. The nuclear export protein exportin-1 in solid malignant tumours: From biology to clinical trials. Clin Transl Med 2024; 14:e1684. [PMID: 38783482 PMCID: PMC11116501 DOI: 10.1002/ctm2.1684] [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: 12/07/2023] [Revised: 04/15/2024] [Accepted: 04/19/2024] [Indexed: 05/25/2024] Open
Abstract
BACKGROUND Exportin-1 (XPO1), a crucial protein regulating nuclear-cytoplasmic transport, is frequently overexpressed in various cancers, driving tumor progression and drug resistance. This makes XPO1 an attractive therapeutic target. Over the past few decades, the number of available nuclear export-selective inhibitors has been increasing. Only KPT-330 (selinexor) has been successfully used for treating haematological malignancies, and KPT-8602 (eltanexor) has been used for treating haematologic tumours in clinical trials. However, the use of nuclear export-selective inhibitors for the inhibition of XPO1 expression has yet to be thoroughly investigated in clinical studies and therapeutic outcomes for solid tumours. METHODS We collected numerous literatures to explain the efficacy of XPO1 Inhibitors in preclinical and clinical studies of a wide range of solid tumours. RESULTS In this review, we focus on the nuclear export function of XPO1 and results from clinical trials of its inhibitors in solid malignant tumours. We summarized the mechanism of action and therapeutic potential of XPO1 inhibitors, as well as adverse effects and response biomarkers. CONCLUSION XPO1 inhibition has emerged as a promising therapeutic strategy in the fight against cancer, offering a novel approach to targeting tumorigenic processes and overcoming drug resistance. SINE compounds have demonstrated efficacy in a wide range of solid tumours, and ongoing research is focused on optimizing their use, identifying response biomarkers, and developing effective combination therapies. KEY POINTS Exportin-1 (XPO1) plays a critical role in mediating nucleocytoplasmic transport and cell cycle. XPO1 dysfunction promotes tumourigenesis and drug resistance within solid tumours. The therapeutic potential and ongoing researches on XPO1 inhibitors in the treatment of solid tumours. Additional researches are essential to address safety concerns and identify biomarkers for predicting patient response to XPO1 inhibitors.
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Affiliation(s)
- Chuanxi Lai
- Department of Colorectal SurgerySir Run Run Shaw HospitalSchool of MedicineZhejiang UniversityHangzhouChina
- Key Laboratory of Biotherapy of Zhejiang ProvinceHangzhouChina
| | - Lingna Xu
- Department of Colorectal SurgerySir Run Run Shaw HospitalSchool of MedicineZhejiang UniversityHangzhouChina
- Key Laboratory of Biotherapy of Zhejiang ProvinceHangzhouChina
| | - Sheng Dai
- Department of Colorectal SurgerySir Run Run Shaw HospitalSchool of MedicineZhejiang UniversityHangzhouChina
- Key Laboratory of Biotherapy of Zhejiang ProvinceHangzhouChina
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17
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Kim KH, Lee CB. Socialized mitochondria: mitonuclear crosstalk in stress. Exp Mol Med 2024; 56:1033-1042. [PMID: 38689084 PMCID: PMC11148012 DOI: 10.1038/s12276-024-01211-4] [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: 11/30/2023] [Revised: 01/27/2024] [Accepted: 02/07/2024] [Indexed: 05/02/2024] Open
Abstract
Traditionally, mitochondria are considered sites of energy production. However, recent studies have suggested that mitochondria are signaling organelles that are involved in intracellular interactions with other organelles. Remarkably, stressed mitochondria appear to induce a beneficial response that restores mitochondrial function and cellular homeostasis. These mitochondrial stress-centered signaling pathways have been rapidly elucidated in multiple organisms. In this review, we examine current perspectives on how mitochondria communicate with the rest of the cell, highlighting mitochondria-to-nucleus (mitonuclear) communication under various stresses. Our understanding of mitochondria as signaling organelles may provide new insights into disease susceptibility and lifespan extension.
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Affiliation(s)
- Kyung Hwa Kim
- Department of Health Sciences, The Graduate School of Dong-A University, 840 Hadan-dong, Saha-gu, Busan, 49315, Korea.
| | - Cho Bi Lee
- Department of Health Sciences, The Graduate School of Dong-A University, 840 Hadan-dong, Saha-gu, Busan, 49315, Korea
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18
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Emerson FJ, Chiu C, Lin LY, Riedel CG, Zhu M, Lee SS. The chromatin factors SET-26 and HCF-1 oppose the histone deacetylase HDA-1 in longevity and gene regulation in C. elegans. Nat Commun 2024; 15:2320. [PMID: 38485937 PMCID: PMC10940595 DOI: 10.1038/s41467-024-46510-6] [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: 02/01/2023] [Accepted: 02/28/2024] [Indexed: 03/18/2024] Open
Abstract
SET-26, HCF-1, and HDA-1 are highly conserved chromatin factors with key roles in development and aging. Here we present mechanistic insights into how these factors regulate gene expression and modulate longevity in C. elegans. We show that SET-26 and HCF-1 cooperate to regulate a common set of genes, and both antagonize the histone deacetylase HDA-1 to limit longevity. HCF-1 localization at chromatin is largely dependent on functional SET-26, whereas SET-26 is only minorly affected by loss of HCF-1, suggesting that SET-26 could recruit HCF-1 to chromatin. HDA-1 opposes SET-26 and HCF-1 on the regulation of a subset of their common target genes and in longevity. Our findings suggest that SET-26, HCF-1, and HDA-1 comprise a mechanism to fine-tune gene expression and longevity and likely have important implications for the mechanistic understanding of how these factors function in diverse organisms, particularly in aging biology.
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Affiliation(s)
- Felicity J Emerson
- Department of Molecular Biology and Genetics, Cornell University, Ithaca, NY, USA
| | - Caitlin Chiu
- Department of Molecular Biology and Genetics, Cornell University, Ithaca, NY, USA
| | - Laura Y Lin
- Department of Molecular Biology and Genetics, Cornell University, Ithaca, NY, USA
| | - Christian G Riedel
- Department of Biosciences and Nutrition, Karolinska Institutet, Huddinge, Sweden
| | - Ming Zhu
- National Institute of Biological Sciences, Beijing, China
| | - Siu Sylvia Lee
- Department of Molecular Biology and Genetics, Cornell University, Ithaca, NY, USA.
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19
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Kim S, Ramalho TR, Haynes CM. Regulation of proteostasis and innate immunity via mitochondria-nuclear communication. J Cell Biol 2024; 223:e202310005. [PMID: 38335010 PMCID: PMC10857905 DOI: 10.1083/jcb.202310005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2023] [Revised: 01/29/2024] [Accepted: 01/30/2024] [Indexed: 02/10/2024] Open
Abstract
Mitochondria are perhaps best known as the "powerhouse of the cell" for their role in ATP production required for numerous cellular activities. Mitochondria have emerged as an important signaling organelle. Here, we first focus on signaling pathways mediated by mitochondria-nuclear communication that promote protein homeostasis (proteostasis). We examine the mitochondrial unfolded protein response (UPRmt) in C. elegans, which is regulated by a transcription factor harboring both a mitochondrial- and nuclear-targeting sequence, the integrated stress response in mammals, as well as the regulation of chromatin by mitochondrial metabolites. In the second section, we explore the role of mitochondria-to-nuclear communication in the regulation of innate immunity and inflammation. Perhaps related to their prokaryotic origin, mitochondria harbor molecules also found in viruses and bacteria. If these molecules accumulate in the cytosol, they elicit the same innate immune responses as viral or bacterial infection.
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Affiliation(s)
- Sookyung Kim
- Department of Molecular, Cell and Cancer Biology, University of Massachusetts Chan Medical School, Worcester, MA, USA
| | - Theresa R. Ramalho
- Department of Molecular, Cell and Cancer Biology, University of Massachusetts Chan Medical School, Worcester, MA, USA
| | - Cole M. Haynes
- Department of Molecular, Cell and Cancer Biology, University of Massachusetts Chan Medical School, Worcester, MA, USA
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20
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Zhao Y, Skovgaard Z, Wang Q. Regulation of adipogenesis by histone methyltransferases. Differentiation 2024; 136:100746. [PMID: 38241884 DOI: 10.1016/j.diff.2024.100746] [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: 07/19/2023] [Revised: 12/15/2023] [Accepted: 01/12/2024] [Indexed: 01/21/2024]
Abstract
Epigenetic regulation is a critical component of lineage determination. Adipogenesis is the process through which uncommitted stem cells or adipogenic precursor cells differentiate into adipocytes, the most abundant cell type of the adipose tissue. Studies examining chromatin modification during adipogenesis have provided further understanding of the molecular blueprint that controls the onset of adipogenic differentiation. Unlike histone acetylation, histone methylation has context dependent effects on the activity of a transcribed region of DNA, with individual or combined marks on different histone residues providing distinct signals for gene expression. Over half of the 42 histone methyltransferases identified in mammalian cells have been investigated in their role during adipogenesis, but across the large body of literature available, there is a lack of clarity over potential correlations or emerging patterns among the different players. In this review, we will summarize important findings from studies published in the past 15 years that have investigated the role of histone methyltransferases during adipogenesis, including both protein arginine methyltransferases (PRMTs) and lysine methyltransferases (KMTs). We further reveal that PRMT1/4/5, H3K4 KMTs (MLL1, MLL3, MLL4, SMYD2 and SET7/9) and H3K27 KMTs (EZH2) all play positive roles during adipogenesis, while PRMT6/7 and H3K9 KMTs (G9a, SUV39H1, SUV39H2, and SETDB1) play negative roles during adipogenesis.
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Affiliation(s)
| | | | - Qinyi Wang
- Computer Science Department, California State Polytechnic University Pomona, USA
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21
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Chen PX, Zhang L, Chen D, Tian Y. Mitochondrial stress and aging: Lessons from C. elegans. Semin Cell Dev Biol 2024; 154:69-76. [PMID: 36863917 DOI: 10.1016/j.semcdb.2023.02.010] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2023] [Revised: 02/20/2023] [Accepted: 02/23/2023] [Indexed: 03/04/2023]
Abstract
Aging is accompanied by a progressive decline in mitochondrial function, which in turn contributes to a variety of age-related diseases. Counterintuitively, a growing number of studies have found that disruption of mitochondrial function often leads to increased lifespan. This seemingly contradictory observation has inspired extensive research into genetic pathways underlying the mitochondrial basis of aging, particularly within the model organism Caenorhabditis elegans. The complex and antagonistic roles of mitochondria in the aging process have altered the view of mitochondria, which not only serve as simple bioenergetic factories but also as signaling platforms for the maintenance of cellular homeostasis and organismal health. Here, we review the contributions of C. elegans to our understanding of mitochondrial function in the aging process over the past decades. In addition, we explore how these insights may promote future research of mitochondrial-targeted strategies in higher organisms to potentially slow aging and delay age-related disease progression.
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Affiliation(s)
- Peng X Chen
- State Key Laboratory of Molecular Developmental Biology, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing 100101, China; University of Chinese Academy of Sciences, Beijing 100093, China
| | - Leyuan Zhang
- State Key Laboratory of Molecular Developmental Biology, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing 100101, China; University of Chinese Academy of Sciences, Beijing 100093, China
| | - Di Chen
- MOE Key Laboratory of Model Animals for Disease Study, Model Animal Research Center of Medical School, Nanjing University, 12 Xuefu Rd, Pukou, Nanjing, Jiangsu 210061, China.
| | - Ye Tian
- State Key Laboratory of Molecular Developmental Biology, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing 100101, China; University of Chinese Academy of Sciences, Beijing 100093, China.
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22
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Dodge JD, Browder NJ, Pellegrino MW. Mitochondrial recovery by the UPR mt: Insights from C. elegans. Semin Cell Dev Biol 2024; 154:59-68. [PMID: 36792440 DOI: 10.1016/j.semcdb.2023.02.002] [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: 01/14/2023] [Revised: 01/31/2023] [Accepted: 02/02/2023] [Indexed: 02/15/2023]
Abstract
Mitochondria are multifaceted organelles, with such functions as the production of cellular energy to the regulation of cell death. However, mitochondria incur various sources of damage from the accumulation of reactive oxygen species and DNA mutations that can impact the protein folding environment and impair their function. Since mitochondrial dysfunction is often associated with reductions in organismal fitness and possibly disease, cells must have safeguards in place to protect mitochondrial function and promote recovery during times of stress. The mitochondrial unfolded protein response (UPRmt) is a transcriptional adaptation that promotes mitochondrial repair to aid in cell survival during stress. While the earlier discoveries into the regulation of the UPRmt stemmed from studies using mammalian cell culture, much of our understanding about this stress response has been bestowed to us by the model organism Caenorhabditis elegans. Indeed, the facile but powerful genetics of this relatively simple nematode has uncovered multiple regulators of the UPRmt, as well as several physiological roles of this stress response. In this review, we will summarize these major advancements originating from studies using C. elegans.
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Affiliation(s)
- Joshua D Dodge
- The University of Texas at Arlington, Department of Biology, Arlington, TX 76019, USA
| | - Nicholas J Browder
- The University of Texas at Arlington, Department of Biology, Arlington, TX 76019, USA
| | - Mark W Pellegrino
- The University of Texas at Arlington, Department of Biology, Arlington, TX 76019, USA.
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23
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Wang W, Li G, Ma J, Fan X, Lu J, Sun Q, Yao J, He Q. Microvascular rarefaction caused by the NOTCH signaling pathway is a key cause of TKI-apatinib-induced hypertension and cardiac damage. Front Pharmacol 2024; 15:1346905. [PMID: 38405666 PMCID: PMC10885812 DOI: 10.3389/fphar.2024.1346905] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2023] [Accepted: 01/30/2024] [Indexed: 02/27/2024] Open
Abstract
With the advancement of tumour-targeted therapy technology, the survival of cancer patients has continued to increase, and cardiovascular events have gradually become an important cause of death in cancer patients. This phenomenon occurs due to adverse cardiovascular reactions caused by the cardiovascular toxicity of antitumour therapy. Moreover, the increase in the proportion of elderly patients with cancer and cardiovascular diseases is due to the extension of life expectancy. Hypertension is the most common cardiovascular side effect of small molecule tyrosine kinase inhibitors (TKIs). The increase in blood pressure induced by TKIs and subsequent cardiovascular complications and events affect the survival and quality of life of patients and partly offset the benefits of antitumour therapy. Many studies have confirmed that in the pathogenesis of hypertension, arterioles and capillary thinness are involved in its occurrence and development. Our previous findings showing that apatinib causes microcirculation rarefaction of the superior mesenteric artery and impaired microvascular growth may inspire new therapeutic strategies for treating hypertension. Thus, by restoring microvascular development and branching patterns, total peripheral resistance and blood pressure are reduced. Therefore, exploring the key molecular targets of TKIs that inhibit the expression of angiogenic factors and elucidating the specific molecular mechanism involved are key scientific avenues for effectively promoting endothelial cell angiogenesis and achieving accurate repair of microcirculation injury in hypertension patients.
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Affiliation(s)
- WenJuan Wang
- Department of Cardiovascular Center, The First People’s Hospital of Huzhou City, Huzhou, China
| | - Guodong Li
- Department of Cardiovascular Center, The First People’s Hospital of Huzhou City, Huzhou, China
| | - Jie Ma
- Department of Hypertension Center, Lanzhou University Second Hospital, Lanzhou, China
| | - Xin Fan
- Department of Hypertension Center, Lanzhou University Second Hospital, Lanzhou, China
| | - Jianzhong Lu
- Department of Cardiovascular Center, The First People’s Hospital of Huzhou City, Huzhou, China
| | - Qiyin Sun
- Department of Cardiovascular Center, The First People’s Hospital of Huzhou City, Huzhou, China
| | - Jiafang Yao
- Department of Cardiovascular Center, The First People’s Hospital of Huzhou City, Huzhou, China
| | - Qingjian He
- Department of Breast and Thyroid Surgery, The First People’s Hospital of Huzhou City, Huzhou, China
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24
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Fabrizio P, Alcolei A, Solari F. Considering Caenorhabditis elegans Aging on a Temporal and Tissue Scale: The Case of Insulin/IGF-1 Signaling. Cells 2024; 13:288. [PMID: 38334680 PMCID: PMC10854721 DOI: 10.3390/cells13030288] [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: 12/23/2023] [Revised: 01/24/2024] [Accepted: 01/31/2024] [Indexed: 02/10/2024] Open
Abstract
The aging process is inherently complex, involving multiple mechanisms that interact at different biological scales. The nematode Caenorhabditis elegans is a simple model organism that has played a pivotal role in aging research following the discovery of mutations extending lifespan. Longevity pathways identified in C. elegans were subsequently found to be conserved and regulate lifespan in multiple species. These pathways intersect with fundamental hallmarks of aging that include nutrient sensing, epigenetic alterations, proteostasis loss, and mitochondrial dysfunction. Here we summarize recent data obtained in C. elegans highlighting the importance of studying aging at both the tissue and temporal scale. We then focus on the neuromuscular system to illustrate the kinetics of changes that take place with age. We describe recently developed tools that enabled the dissection of the contribution of the insulin/IGF-1 receptor ortholog DAF-2 to the regulation of worm mobility in specific tissues and at different ages. We also discuss guidelines and potential pitfalls in the use of these new tools. We further highlight the opportunities that they present, especially when combined with recent transcriptomic data, to address and resolve the inherent complexity of aging. Understanding how different aging processes interact within and between tissues at different life stages could ultimately suggest potential intervention points for age-related diseases.
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Affiliation(s)
- Paola Fabrizio
- Laboratoire de Biologie et Modélisation de la Cellule, Ecole Normale Supérieure de Lyon, CNRS UMR5239, INSERM 1210, University Claude Bernard Lyon 1, 69364 Lyon, France;
| | - Allan Alcolei
- INMG, MeLiS, CNRS UMR 5284, INSERM U1314, University Claude Bernard Lyon 1, 69008 Lyon, France;
| | - Florence Solari
- INMG, MeLiS, CNRS UMR 5284, INSERM U1314, University Claude Bernard Lyon 1, 69008 Lyon, France;
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25
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Chang CF, Gunawan AL, Liparulo I, Zushin PJH, Vitangcol K, Timblin GA, Saijo K, Wang B, Parlakgül G, Arruda AP, Stahl A. Brown adipose tissue CoQ deficiency activates the integrated stress response and FGF21-dependent mitohormesis. EMBO J 2024; 43:168-195. [PMID: 38212382 PMCID: PMC10897314 DOI: 10.1038/s44318-023-00008-x] [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: 03/17/2023] [Revised: 10/27/2023] [Accepted: 11/08/2023] [Indexed: 01/13/2024] Open
Abstract
Coenzyme Q (CoQ) is essential for mitochondrial respiration and required for thermogenic activity in brown adipose tissues (BAT). CoQ deficiency leads to a wide range of pathological manifestations, but mechanistic consequences of CoQ deficiency in specific tissues, such as BAT, remain poorly understood. Here, we show that pharmacological or genetic CoQ deficiency in BAT leads to stress signals causing accumulation of cytosolic mitochondrial RNAs and activation of the eIF2α kinase PKR, resulting in activation of the integrated stress response (ISR) with suppression of UCP1 but induction of FGF21 expression. Strikingly, despite diminished UCP1 levels, BAT CoQ deficiency displays increased whole-body metabolic rates at room temperature and thermoneutrality resulting in decreased weight gain on high-fat diets (HFD). In line with enhanced metabolic rates, BAT and inguinal white adipose tissue (iWAT) interorgan crosstalk caused increased browning of iWAT in BAT-specific CoQ deficient animals. This mitohormesis-like effect depends on the ATF4-FGF21 axis and BAT-secreted FGF21, revealing an unexpected role for CoQ in the modulation of whole-body energy expenditure with wide-ranging implications for primary and secondary CoQ deficiencies.
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Affiliation(s)
- Ching-Fang Chang
- Department of Nutritional Sciences and Toxicology, University of California, Berkeley, Berkeley, CA, 94720, USA
| | - Amanda L Gunawan
- Department of Nutritional Sciences and Toxicology, University of California, Berkeley, Berkeley, CA, 94720, USA
| | - Irene Liparulo
- Department of Nutritional Sciences and Toxicology, University of California, Berkeley, Berkeley, CA, 94720, USA
| | - Peter-James H Zushin
- Department of Nutritional Sciences and Toxicology, University of California, Berkeley, Berkeley, CA, 94720, USA
| | - Kaitlyn Vitangcol
- Department of Nutritional Sciences and Toxicology, University of California, Berkeley, Berkeley, CA, 94720, USA
| | - Greg A Timblin
- Center for Bioengineering and Tissue Regeneration, Department of Surgery, University of California, San Francisco, San Francisco, CA, USA
| | - Kaoru Saijo
- Department of Molecular and Cell Biology, University of California at Berkeley, Berkeley, CA, 94720, USA
| | - Biao Wang
- Cardiovascular Research Institute, Department of Physiology, University of California, San Francisco, CA, 94158, USA
| | - Güneş Parlakgül
- Department of Nutritional Sciences and Toxicology, University of California, Berkeley, Berkeley, CA, 94720, USA
| | - Ana Paula Arruda
- Department of Nutritional Sciences and Toxicology, University of California, Berkeley, Berkeley, CA, 94720, USA
| | - Andreas Stahl
- Department of Nutritional Sciences and Toxicology, University of California, Berkeley, Berkeley, CA, 94720, USA.
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26
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Cilleros-Holgado P, Gómez-Fernández D, Piñero-Pérez R, Romero-Domínguez JM, Reche-López D, López-Cabrera A, Álvarez-Córdoba M, Munuera-Cabeza M, Talaverón-Rey M, Suárez-Carrillo A, Romero-González A, Sánchez-Alcázar JA. Mitochondrial Quality Control via Mitochondrial Unfolded Protein Response (mtUPR) in Ageing and Neurodegenerative Diseases. Biomolecules 2023; 13:1789. [PMID: 38136659 PMCID: PMC10741690 DOI: 10.3390/biom13121789] [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: 11/18/2023] [Revised: 12/07/2023] [Accepted: 12/11/2023] [Indexed: 12/24/2023] Open
Abstract
Mitochondria play a key role in cellular functions, including energy production and oxidative stress regulation. For this reason, maintaining mitochondrial homeostasis and proteostasis (homeostasis of the proteome) is essential for cellular health. Therefore, there are different mitochondrial quality control mechanisms, such as mitochondrial biogenesis, mitochondrial dynamics, mitochondrial-derived vesicles (MDVs), mitophagy, or mitochondrial unfolded protein response (mtUPR). The last item is a stress response that occurs when stress is present within mitochondria and, especially, when the accumulation of unfolded and misfolded proteins in the mitochondrial matrix surpasses the folding capacity of the mitochondrion. In response to this, molecular chaperones and proteases as well as the mitochondrial antioxidant system are activated to restore mitochondrial proteostasis and cellular function. In disease contexts, mtUPR modulation holds therapeutic potential by mitigating mitochondrial dysfunction. In particular, in the case of neurodegenerative diseases, such as primary mitochondrial diseases, Alzheimer's disease (AD), Parkinson's disease (PD), Huntington's disease (HD), Amyotrophic Lateral Sclerosis (ALS), or Friedreich's Ataxia (FA), there is a wealth of evidence demonstrating that the modulation of mtUPR helps to reduce neurodegeneration and its associated symptoms in various cellular and animal models. These findings underscore mtUPR's role as a promising therapeutic target in combating these devastating disorders.
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Affiliation(s)
| | | | | | | | | | | | | | | | | | | | | | - Jose Antonio Sánchez-Alcázar
- Centro Andaluz de Biología del Desarrollo (CABD-CSIC-Universidad Pablo de Olavide), 41013 Sevilla, Spain; (P.C.-H.); (D.G.-F.); (R.P.-P.); (J.M.R.-D.); (D.R.-L.); (A.L.-C.); (M.Á.-C.); (M.M.-C.); (M.T.-R.); (A.S.-C.); (A.R.-G.)
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27
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Gaspar RS, Katashima CK, Crisol BM, Carneiro FS, Sampaio I, Silveira LDR, Silva ASRD, Cintra DE, Pauli JR, Ropelle ER. Physical exercise elicits UPR mt in the skeletal muscle: The role of c-Jun N-terminal kinase. Mol Metab 2023; 78:101816. [PMID: 37821006 PMCID: PMC10590869 DOI: 10.1016/j.molmet.2023.101816] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/29/2023] [Revised: 08/10/2023] [Accepted: 10/02/2023] [Indexed: 10/13/2023] Open
Abstract
OBJECTIVE The mitochondrial unfolded protein response (UPRmt) is an adaptive cellular response to stress to ensure mitochondrial proteostasis and function. Here we explore the capacity of physical exercise to induce UPRmt in the skeletal muscle. METHODS Therefore, we combined mouse models of exercise (swimming and treadmill running), pharmacological intervention, and bioinformatics analyses. RESULTS Firstly, RNA sequencing and Western blotting analysis revealed that an acute aerobic session stimulated several mitostress-related genes and protein content in muscle, including the UPRmt markers. Conversely, using a large panel of isogenic strains of BXD mice, we identified that BXD73a and 73b strains displayed low levels of several UPRmt-related genes in the skeletal muscle, and this genotypic feature was accompanied by body weight gain, lower locomotor activity, and aerobic capacity. Finally, we identified that c-Jun N-terminal kinase (JNK) activation was critical in exercise-induced UPRmt in the skeletal muscle since pharmacological JNK pathway inhibition blunted exercise-induced UPRmt markers in mice muscle. CONCLUSION Our findings provide new insights into how exercise triggers mitostress signals toward the oxidative capacity in the skeletal muscle.
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Affiliation(s)
- Rodrigo Stellzer Gaspar
- Laboratory of Molecular Biology of Exercise (LaBMEx), School of Applied Sciences (FCA), University of Campinas (Unicamp), Limeira, Brazil; Laboratory of Cell Signaling, Obesity and Comorbidities Research Center (OCRC), University of Campinas (Unicamp), Campinas, São Paulo, Brazil
| | - Carlos Kiyoshi Katashima
- Laboratory of Molecular Biology of Exercise (LaBMEx), School of Applied Sciences (FCA), University of Campinas (Unicamp), Limeira, Brazil
| | - Barbara Moreira Crisol
- Laboratory of Molecular Biology of Exercise (LaBMEx), School of Applied Sciences (FCA), University of Campinas (Unicamp), Limeira, Brazil
| | - Fernanda Silva Carneiro
- Laboratory of Molecular Biology of Exercise (LaBMEx), School of Applied Sciences (FCA), University of Campinas (Unicamp), Limeira, Brazil
| | - Igor Sampaio
- Department of Structural and Functional Biology, Biology Institute, University of Campinas (Unicamp), Campinas, Brazil
| | - Leonardo Dos Reis Silveira
- Department of Structural and Functional Biology, Biology Institute, University of Campinas (Unicamp), Campinas, Brazil
| | - Adelino Sanchez Ramos da Silva
- School of Physical Education and Sport of Ribeirão Preto, University of São Paulo (USP), Ribeirão Preto, São Paulo, Brazil
| | - Dennys Esper Cintra
- Laboratory of Nutritional Genomics (Labgen), School of Applied Sciences (FCA), University of Campinas (Unicamp), Limeira, Brazil
| | - José Rodrigo Pauli
- Laboratory of Molecular Biology of Exercise (LaBMEx), School of Applied Sciences (FCA), University of Campinas (Unicamp), Limeira, Brazil
| | - Eduardo Rochete Ropelle
- Laboratory of Molecular Biology of Exercise (LaBMEx), School of Applied Sciences (FCA), University of Campinas (Unicamp), Limeira, Brazil; Faculty of Medical Sciences, Department of Internal Medicine. University of Campinas (Unicamp), Campinas, São Paulo, Brazil.
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28
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Wang J, Yin H, Zhu W, He Q, Zhang H, Sun L, Qiao Y, Xiang Y. Research on the resistance of isoviolanthin to hydrogen peroxide-triggered injury of skin keratinocytes based on Transcriptome sequencing and molecular docking. Medicine (Baltimore) 2023; 102:e36119. [PMID: 38013320 PMCID: PMC10681389 DOI: 10.1097/md.0000000000036119] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/04/2023] [Accepted: 10/24/2023] [Indexed: 11/29/2023] Open
Abstract
Apoptosis of skin keratinocytes is closely associated with skin problems in humans and natural flavonoids have shown excellent biological activity. Hence, the study of flavonoids against human keratinocyte apoptosis has aroused the interest of numerous researchers. In this study, methyl thiazolyl tetrazolium (MTT) assay and Western blots were used to investigate the skin-protective effect of isoviolanthin, a di-C-glycoside derived from Dendrobium officinale, on hydrogen peroxide (H2O2)-triggered apoptosis of skin keratinocytes. Transcriptome sequencing (RNA-Seq) was used to detect the altered expression genes between the model and treatment group and qRT-PCR was used to verify the accuracy of transcriptome sequencing results. Finally, molecular docking was used to observe the binding ability of isoviolanthin to the selected differential genes screened by transcriptome sequencing. Our results found isoviolanthin could probably increase skin keratinocyte viability, by resisting against apoptosis of skin keratinocytes through downregulating the level of p53 for the first time. By comparing transcriptome differences between the model and drug administration groups, a total of 2953 differential expression genes (DEGs) were identified. Enrichment analysis showed that isoviolanthin may regulate these pathways, such as DNA replication, Mismatch repair, RNA polymerase, Fanconi anemia pathway, Cell cycle, p53 signaling pathway. Last, our results found isoviolanthin has a strong affinity for binding to KDM6B, CHAC2, ESCO2, and IPO4, which may be the potential target for treating skin injuries induced by reactive oxide species. The current study confirms isoviolanthin potential as a skin protectant. The findings may serve as a starting point for further research into the mechanism of isoviolanthin protection against skin damage caused by reactive oxide species (e.g., hydrogen peroxide).
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Affiliation(s)
- Jie Wang
- School of Rehabilitation Science, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Hao Yin
- Institute of Vascular Disease, Shanghai TCM-Integrated Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Wei Zhu
- School of Rehabilitation Science, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Qingyi He
- School of Rehabilitation Science, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Haitang Zhang
- Department of Dermatology, Yueyang Hospital of Integrated Traditional Chinese and Western Medicine, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Lu Sun
- Department of Dermatology, Yueyang Hospital of Integrated Traditional Chinese and Western Medicine, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Yunxiao Qiao
- Department of Dermatology, Yueyang Hospital of Integrated Traditional Chinese and Western Medicine, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Yanwei Xiang
- School of Rehabilitation Science, Shanghai University of Traditional Chinese Medicine, Shanghai, China
- Department of Dermatology, Yueyang Hospital of Integrated Traditional Chinese and Western Medicine, Shanghai University of Traditional Chinese Medicine, Shanghai, China
- Engineering Research Center of Traditional Chinese Medicine Intelligent Rehabilitation, Ministry of Education, Shanghai, China
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29
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Bar-Ziv R, Dutta N, Hruby A, Sukarto E, Averbukh M, Alcala A, Henderson HR, Durieux J, Tronnes SU, Ahmad Q, Bolas T, Perez J, Dishart JG, Vega M, Garcia G, Higuchi-Sanabria R, Dillin A. Glial-derived mitochondrial signals affect neuronal proteostasis and aging. SCIENCE ADVANCES 2023; 9:eadi1411. [PMID: 37831769 PMCID: PMC10575585 DOI: 10.1126/sciadv.adi1411] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/05/2023] [Accepted: 09/12/2023] [Indexed: 10/15/2023]
Abstract
The nervous system plays a critical role in maintaining whole-organism homeostasis; neurons experiencing mitochondrial stress can coordinate the induction of protective cellular pathways, such as the mitochondrial unfolded protein response (UPRMT), between tissues. However, these studies largely ignored nonneuronal cells of the nervous system. Here, we found that UPRMT activation in four astrocyte-like glial cells in the nematode, Caenorhabditis elegans, can promote protein homeostasis by alleviating protein aggregation in neurons. Unexpectedly, we find that glial cells use small clear vesicles (SCVs) to signal to neurons, which then relay the signal to the periphery using dense-core vesicles (DCVs). This work underlines the importance of glia in establishing and regulating protein homeostasis within the nervous system, which can then affect neuron-mediated effects in organismal homeostasis and longevity.
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Affiliation(s)
- Raz Bar-Ziv
- Department of Molecular and Cellular Biology, Howard Hughes Medical Institute, The University of California, Berkeley, Berkeley, CA 94720, USA
| | - Naibedya Dutta
- Leonard Davis School of Gerontology, University of Southern California, Los Angeles, CA 90089, USA
| | - Adam Hruby
- Leonard Davis School of Gerontology, University of Southern California, Los Angeles, CA 90089, USA
| | - Edward Sukarto
- Department of Molecular and Cellular Biology, Howard Hughes Medical Institute, The University of California, Berkeley, Berkeley, CA 94720, USA
| | - Maxim Averbukh
- Leonard Davis School of Gerontology, University of Southern California, Los Angeles, CA 90089, USA
| | - Athena Alcala
- Leonard Davis School of Gerontology, University of Southern California, Los Angeles, CA 90089, USA
| | - Hope R. Henderson
- Department of Molecular and Cellular Biology, Howard Hughes Medical Institute, The University of California, Berkeley, Berkeley, CA 94720, USA
| | - Jenni Durieux
- Department of Molecular and Cellular Biology, Howard Hughes Medical Institute, The University of California, Berkeley, Berkeley, CA 94720, USA
| | - Sarah U. Tronnes
- Department of Molecular and Cellular Biology, Howard Hughes Medical Institute, The University of California, Berkeley, Berkeley, CA 94720, USA
| | - Qazi Ahmad
- Department of Molecular and Cellular Biology, Howard Hughes Medical Institute, The University of California, Berkeley, Berkeley, CA 94720, USA
| | - Theodore Bolas
- Department of Molecular and Cellular Biology, Howard Hughes Medical Institute, The University of California, Berkeley, Berkeley, CA 94720, USA
| | - Joel Perez
- Department of Molecular and Cellular Biology, Howard Hughes Medical Institute, The University of California, Berkeley, Berkeley, CA 94720, USA
| | - Julian G. Dishart
- Department of Molecular and Cellular Biology, Howard Hughes Medical Institute, The University of California, Berkeley, Berkeley, CA 94720, USA
| | - Matthew Vega
- Leonard Davis School of Gerontology, University of Southern California, Los Angeles, CA 90089, USA
| | - Gilberto Garcia
- Leonard Davis School of Gerontology, University of Southern California, Los Angeles, CA 90089, USA
| | - Ryo Higuchi-Sanabria
- Leonard Davis School of Gerontology, University of Southern California, Los Angeles, CA 90089, USA
| | - Andrew Dillin
- Department of Molecular and Cellular Biology, Howard Hughes Medical Institute, The University of California, Berkeley, Berkeley, CA 94720, USA
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30
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Emerson FJ, Lee SS. Chromatin: the old and young of it. Front Mol Biosci 2023; 10:1270285. [PMID: 37877123 PMCID: PMC10591336 DOI: 10.3389/fmolb.2023.1270285] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2023] [Accepted: 09/20/2023] [Indexed: 10/26/2023] Open
Abstract
Aging affects nearly all aspects of our cells, from our DNA to our proteins to how our cells handle stress and communicate with each other. Age-related chromatin changes are of particular interest because chromatin can dynamically respond to the cellular and organismal environment, and many modifications at chromatin are reversible. Changes at chromatin occur during aging, and evidence from model organisms suggests that chromatin factors could play a role in modulating the aging process itself, as altering proteins that work at chromatin often affect the lifespan of yeast, worms, flies, and mice. The field of chromatin and aging is rapidly expanding, and high-resolution genomics tools make it possible to survey the chromatin environment or track chromatin factors implicated in longevity with precision that was not previously possible. In this review, we discuss the state of chromatin and aging research. We include examples from yeast, Drosophila, mice, and humans, but we particularly focus on the commonly used aging model, the worm Caenorhabditis elegans, in which there are many examples of chromatin factors that modulate longevity. We include evidence of both age-related changes to chromatin and evidence of specific chromatin factors linked to longevity in core histones, nuclear architecture, chromatin remodeling, and histone modifications.
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Affiliation(s)
| | - Siu Sylvia Lee
- Lee Lab, Department of Molecular Biology and Genetics, Cornell University, Ithaca, NY, United States
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31
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Shen K, Durieux J, Mena CG, Webster BM, Kimberly Tsui C, Zhang H, Joe L, Berendzen K, Dillin A. The germline coordinates mitokine signaling. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2023:2023.08.21.554217. [PMID: 37873079 PMCID: PMC10592821 DOI: 10.1101/2023.08.21.554217] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/25/2023]
Abstract
The ability of mitochondria to coordinate stress responses across tissues is critical for health. In C. elegans , neurons experiencing mitochondrial stress elicit an inter-tissue signaling pathway through the release of mitokine signals, such as serotonin or the WNT ligand EGL-20, which activate the mitochondrial unfolded protein response (UPR MT ) in the periphery to promote organismal health and lifespan. We find that germline mitochondria play a surprising role in neuron-to-peripheral UPR MT signaling. Specifically, we find that germline mitochondria signal downstream of neuronal mitokines, like WNT and serotonin, and upstream of lipid metabolic pathways in the periphery to regulate UPR MT activation. We also find that the germline tissue itself is essential in UPR MT signaling. We propose that the germline has a central signaling role in coordinating mitochondrial stress responses across tissues, and germline mitochondria play a defining role in this coordination because of their inherent roles in germline integrity and inter-tissue signaling.
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32
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López-Gil L, Pascual-Ahuir A, Proft M. Genomic Instability and Epigenetic Changes during Aging. Int J Mol Sci 2023; 24:14279. [PMID: 37762580 PMCID: PMC10531692 DOI: 10.3390/ijms241814279] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2023] [Revised: 09/15/2023] [Accepted: 09/18/2023] [Indexed: 09/29/2023] Open
Abstract
Aging is considered the deterioration of physiological functions along with an increased mortality rate. This scientific review focuses on the central importance of genomic instability during the aging process, encompassing a range of cellular and molecular changes that occur with advancing age. In particular, this revision addresses the genetic and epigenetic alterations that contribute to genomic instability, such as telomere shortening, DNA damage accumulation, and decreased DNA repair capacity. Furthermore, the review explores the epigenetic changes that occur with aging, including modifications to histones, DNA methylation patterns, and the role of non-coding RNAs. Finally, the review discusses the organization of chromatin and its contribution to genomic instability, including heterochromatin loss, chromatin remodeling, and changes in nucleosome and histone abundance. In conclusion, this review highlights the fundamental role that genomic instability plays in the aging process and underscores the need for continued research into these complex biological mechanisms.
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Affiliation(s)
- Lucía López-Gil
- Department of Biotechnology, Instituto de Biología Molecular y Celular de Plantas, Universitat Politècnica de València, Ingeniero Fausto Elio s/n, 46022 Valencia, Spain;
- Department of Molecular and Cellular Pathology and Therapy, Instituto de Biomedicina de Valencia IBV-CSIC, Consejo Superior de Investigaciones Científicas CSIC, Jaime Roig 11, 46010 Valencia, Spain
| | - Amparo Pascual-Ahuir
- Department of Biotechnology, Instituto de Biología Molecular y Celular de Plantas, Universitat Politècnica de València, Ingeniero Fausto Elio s/n, 46022 Valencia, Spain;
| | - Markus Proft
- Department of Molecular and Cellular Pathology and Therapy, Instituto de Biomedicina de Valencia IBV-CSIC, Consejo Superior de Investigaciones Científicas CSIC, Jaime Roig 11, 46010 Valencia, Spain
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33
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Leyva-Díaz E. CUT homeobox genes: transcriptional regulation of neuronal specification and beyond. Front Cell Neurosci 2023; 17:1233830. [PMID: 37744879 PMCID: PMC10515288 DOI: 10.3389/fncel.2023.1233830] [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: 06/02/2023] [Accepted: 08/23/2023] [Indexed: 09/26/2023] Open
Abstract
CUT homeobox genes represent a captivating gene class fulfilling critical functions in the development and maintenance of multiple cell types across a wide range of organisms. They belong to the larger group of homeobox genes, which encode transcription factors responsible for regulating gene expression patterns during development. CUT homeobox genes exhibit two distinct and conserved DNA binding domains, a homeodomain accompanied by one or more CUT domains. Numerous studies have shown the involvement of CUT homeobox genes in diverse developmental processes such as body axis formation, organogenesis, tissue patterning and neuronal specification. They govern these processes by exerting control over gene expression through their transcriptional regulatory activities, which they accomplish by a combination of classic and unconventional interactions with the DNA. Intriguingly, apart from their roles as transcriptional regulators, they also serve as accessory factors in DNA repair pathways through protein-protein interactions. They are highly conserved across species, highlighting their fundamental importance in developmental biology. Remarkably, evolutionary analysis has revealed that CUT homeobox genes have experienced an extraordinary degree of rearrangements and diversification compared to other classes of homeobox genes, including the emergence of a novel gene family in vertebrates. Investigating the functions and regulatory networks of CUT homeobox genes provides significant understanding into the molecular mechanisms underlying embryonic development and tissue homeostasis. Furthermore, aberrant expression or mutations in CUT homeobox genes have been associated with various human diseases, highlighting their relevance beyond developmental processes. This review will overview the well known roles of CUT homeobox genes in nervous system development, as well as their functions in other tissues across phylogeny.
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Liu R, Zhao E, Yu H, Yuan C, Abbas MN, Cui H. Methylation across the central dogma in health and diseases: new therapeutic strategies. Signal Transduct Target Ther 2023; 8:310. [PMID: 37620312 PMCID: PMC10449936 DOI: 10.1038/s41392-023-01528-y] [Citation(s) in RCA: 13] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2023] [Revised: 05/23/2023] [Accepted: 05/25/2023] [Indexed: 08/26/2023] Open
Abstract
The proper transfer of genetic information from DNA to RNA to protein is essential for cell-fate control, development, and health. Methylation of DNA, RNAs, histones, and non-histone proteins is a reversible post-synthesis modification that finetunes gene expression and function in diverse physiological processes. Aberrant methylation caused by genetic mutations or environmental stimuli promotes various diseases and accelerates aging, necessitating the development of therapies to correct the disease-driver methylation imbalance. In this Review, we summarize the operating system of methylation across the central dogma, which includes writers, erasers, readers, and reader-independent outputs. We then discuss how dysregulation of the system contributes to neurological disorders, cancer, and aging. Current small-molecule compounds that target the modifiers show modest success in certain cancers. The methylome-wide action and lack of specificity lead to undesirable biological effects and cytotoxicity, limiting their therapeutic application, especially for diseases with a monogenic cause or different directions of methylation changes. Emerging tools capable of site-specific methylation manipulation hold great promise to solve this dilemma. With the refinement of delivery vehicles, these new tools are well positioned to advance the basic research and clinical translation of the methylation field.
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Affiliation(s)
- Ruochen Liu
- State Key Laboratory of Resource Insects, Medical Research Institute, Southwest University, Chongqing, 400715, China
- Jinfeng Laboratory, Chongqing, 401329, China
- Chongqing Engineering and Technology Research Center for Silk Biomaterials and Regenerative Medicine, Chongqing, 400716, China
- Engineering Research Center for Cancer Biomedical and Translational Medicine, Southwest University, Chongqing, 400715, China
| | - Erhu Zhao
- State Key Laboratory of Resource Insects, Medical Research Institute, Southwest University, Chongqing, 400715, China
- Jinfeng Laboratory, Chongqing, 401329, China
- Chongqing Engineering and Technology Research Center for Silk Biomaterials and Regenerative Medicine, Chongqing, 400716, China
- Engineering Research Center for Cancer Biomedical and Translational Medicine, Southwest University, Chongqing, 400715, China
| | - Huijuan Yu
- State Key Laboratory of Resource Insects, Medical Research Institute, Southwest University, Chongqing, 400715, China
| | - Chaoyu Yuan
- State Key Laboratory of Resource Insects, Medical Research Institute, Southwest University, Chongqing, 400715, China
| | - Muhammad Nadeem Abbas
- State Key Laboratory of Resource Insects, Medical Research Institute, Southwest University, Chongqing, 400715, China
- Jinfeng Laboratory, Chongqing, 401329, China
- Chongqing Engineering and Technology Research Center for Silk Biomaterials and Regenerative Medicine, Chongqing, 400716, China
- Engineering Research Center for Cancer Biomedical and Translational Medicine, Southwest University, Chongqing, 400715, China
| | - Hongjuan Cui
- State Key Laboratory of Resource Insects, Medical Research Institute, Southwest University, Chongqing, 400715, China.
- Jinfeng Laboratory, Chongqing, 401329, China.
- Chongqing Engineering and Technology Research Center for Silk Biomaterials and Regenerative Medicine, Chongqing, 400716, China.
- Engineering Research Center for Cancer Biomedical and Translational Medicine, Southwest University, Chongqing, 400715, China.
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Bar-Ziv R, Dutta N, Hruby A, Sukarto E, Averbukh M, Alcala A, Henderson HR, Durieux J, Tronnes SU, Ahmad Q, Bolas T, Perez J, Dishart JG, Vega M, Garcia G, Higuchi-Sanabria R, Dillin A. Glial-derived mitochondrial signals impact neuronal proteostasis and aging. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2023:2023.07.20.549924. [PMID: 37609253 PMCID: PMC10441375 DOI: 10.1101/2023.07.20.549924] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 08/24/2023]
Abstract
The nervous system plays a critical role in maintaining whole-organism homeostasis; neurons experiencing mitochondrial stress can coordinate the induction of protective cellular pathways, such as the mitochondrial unfolded protein response (UPRMT), between tissues. However, these studies largely ignored non-neuronal cells of the nervous system. Here, we found that UPRMT activation in four, astrocyte-like glial cells in the nematode, C. elegans, can promote protein homeostasis by alleviating protein aggregation in neurons. Surprisingly, we find that glial cells utilize small clear vesicles (SCVs) to signal to neurons, which then relay the signal to the periphery using dense-core vesicles (DCVs). This work underlines the importance of glia in establishing and regulating protein homeostasis within the nervous system, which can then impact neuron-mediated effects in organismal homeostasis and longevity.
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Affiliation(s)
- Raz Bar-Ziv
- Department of Molecular & Cellular Biology, Howard Hughes Medical Institute, The University of California, Berkeley, Berkeley CA 94720, USA
| | - Naibedya Dutta
- Leonard Davis School of Gerontology, University of Southern California, Los Angeles, CA 90089, USA
| | - Adam Hruby
- Leonard Davis School of Gerontology, University of Southern California, Los Angeles, CA 90089, USA
| | - Edward Sukarto
- Department of Molecular & Cellular Biology, Howard Hughes Medical Institute, The University of California, Berkeley, Berkeley CA 94720, USA
| | - Maxim Averbukh
- Leonard Davis School of Gerontology, University of Southern California, Los Angeles, CA 90089, USA
| | - Athena Alcala
- Leonard Davis School of Gerontology, University of Southern California, Los Angeles, CA 90089, USA
| | - Hope R. Henderson
- Department of Molecular & Cellular Biology, Howard Hughes Medical Institute, The University of California, Berkeley, Berkeley CA 94720, USA
| | - Jenni Durieux
- Department of Molecular & Cellular Biology, Howard Hughes Medical Institute, The University of California, Berkeley, Berkeley CA 94720, USA
| | - Sarah U. Tronnes
- Department of Molecular & Cellular Biology, Howard Hughes Medical Institute, The University of California, Berkeley, Berkeley CA 94720, USA
| | - Qazi Ahmad
- Department of Molecular & Cellular Biology, Howard Hughes Medical Institute, The University of California, Berkeley, Berkeley CA 94720, USA
| | - Theodore Bolas
- Department of Molecular & Cellular Biology, Howard Hughes Medical Institute, The University of California, Berkeley, Berkeley CA 94720, USA
| | - Joel Perez
- Department of Molecular & Cellular Biology, Howard Hughes Medical Institute, The University of California, Berkeley, Berkeley CA 94720, USA
| | - Julian G. Dishart
- Department of Molecular & Cellular Biology, Howard Hughes Medical Institute, The University of California, Berkeley, Berkeley CA 94720, USA
| | - Matthew Vega
- Leonard Davis School of Gerontology, University of Southern California, Los Angeles, CA 90089, USA
| | - Gilberto Garcia
- Leonard Davis School of Gerontology, University of Southern California, Los Angeles, CA 90089, USA
| | - Ryo Higuchi-Sanabria
- Leonard Davis School of Gerontology, University of Southern California, Los Angeles, CA 90089, USA
| | - Andrew Dillin
- Department of Molecular & Cellular Biology, Howard Hughes Medical Institute, The University of California, Berkeley, Berkeley CA 94720, USA
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Guo Y, Guan T, Shafiq K, Yu Q, Jiao X, Na D, Li M, Zhang G, Kong J. Mitochondrial dysfunction in aging. Ageing Res Rev 2023; 88:101955. [PMID: 37196864 DOI: 10.1016/j.arr.2023.101955] [Citation(s) in RCA: 48] [Impact Index Per Article: 48.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2022] [Revised: 04/27/2023] [Accepted: 05/14/2023] [Indexed: 05/19/2023]
Abstract
Aging is a complex process that features a functional decline in many organelles. Although mitochondrial dysfunction is suggested as one of the determining factors of aging, the role of mitochondrial quality control (MQC) in aging is still poorly understood. A growing body of evidence points out that reactive oxygen species (ROS) stimulates mitochondrial dynamic changes and accelerates the accumulation of oxidized by-products through mitochondrial proteases and mitochondrial unfolded protein response (UPRmt). Mitochondrial-derived vesicles (MDVs) are the frontline of MQC to dispose of oxidized derivatives. Besides, mitophagy helps remove partially damaged mitochondria to ensure that mitochondria are healthy and functional. Although abundant interventions on MQC have been explored, over-activation or inhibition of any type of MQC may even accelerate abnormal energy metabolism and mitochondrial dysfunction-induced senescence. This review summarizes mechanisms essential for maintaining mitochondrial homeostasis and emphasizes that imbalanced MQC may accelerate cellular senescence and aging. Thus, appropriate interventions on MQC may delay the aging process and extend lifespan.
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Affiliation(s)
- Ying Guo
- Department of Human Anatomy and Cell Science, University of Manitoba, Winnipeg, Manitoba, Canada; Department of Forensic Medicine, Hebei North University, Zhangjiakou, China
| | - Teng Guan
- Department of Human Anatomy and Cell Science, University of Manitoba, Winnipeg, Manitoba, Canada
| | - Kashfia Shafiq
- Department of Laboratory Medicine and Pathobiology, University of Toronto, Toronto, Canada
| | - Qiang Yu
- Department of Human Anatomy and Cell Science, University of Manitoba, Winnipeg, Manitoba, Canada
| | - Xin Jiao
- Department of Forensic Medicine, Hebei North University, Zhangjiakou, China
| | - Donghui Na
- Department of Forensic Medicine, Hebei North University, Zhangjiakou, China
| | - Meiyu Li
- Department of Forensic Medicine, Hebei North University, Zhangjiakou, China
| | - Guohui Zhang
- Department of Forensic Medicine, Hebei North University, Zhangjiakou, China.
| | - Jiming Kong
- Department of Human Anatomy and Cell Science, University of Manitoba, Winnipeg, Manitoba, Canada.
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37
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Kim E, Annibal A, Lee Y, Park HEH, Ham S, Jeong DE, Kim Y, Park S, Kwon S, Jung Y, Park J, Kim SS, Antebi A, Lee SJV. Mitochondrial aconitase suppresses immunity by modulating oxaloacetate and the mitochondrial unfolded protein response. Nat Commun 2023; 14:3716. [PMID: 37349299 PMCID: PMC10287738 DOI: 10.1038/s41467-023-39393-6] [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: 08/31/2022] [Accepted: 06/12/2023] [Indexed: 06/24/2023] Open
Abstract
Accumulating evidence indicates that mitochondria play crucial roles in immunity. However, the role of the mitochondrial Krebs cycle in immunity remains largely unknown, in particular at the organism level. Here we show that mitochondrial aconitase, ACO-2, a Krebs cycle enzyme that catalyzes the conversion of citrate to isocitrate, inhibits immunity against pathogenic bacteria in C. elegans. We find that the genetic inhibition of aco-2 decreases the level of oxaloacetate. This increases the mitochondrial unfolded protein response, subsequently upregulating the transcription factor ATFS-1, which contributes to enhanced immunity against pathogenic bacteria. We show that the genetic inhibition of mammalian ACO2 increases immunity against pathogenic bacteria by modulating the mitochondrial unfolded protein response and oxaloacetate levels in cultured cells. Because mitochondrial aconitase is highly conserved across phyla, a therapeutic strategy targeting ACO2 may eventually help properly control immunity in humans.
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Affiliation(s)
- Eunah Kim
- Department of Biological Sciences, Korea Advanced Institute of Science and Technology, Daejeon, 34141, South Korea
| | - Andrea Annibal
- Max Planck Institute for Biology of Ageing, Joseph-Stelzmann-Strasse 9b, Cologne, 50931, Germany
| | - Yujin Lee
- Department of Biological Sciences, Korea Advanced Institute of Science and Technology, Daejeon, 34141, South Korea
| | - Hae-Eun H Park
- Department of Biological Sciences, Korea Advanced Institute of Science and Technology, Daejeon, 34141, South Korea
| | - Seokjin Ham
- Department of Biological Sciences, Korea Advanced Institute of Science and Technology, Daejeon, 34141, South Korea
| | - Dae-Eun Jeong
- Department of Life Sciences, Pohang University of Science and Technology, Pohang, Gyeongbuk, 37673, South Korea
| | - Younghun Kim
- Department of Biological Sciences, Korea Advanced Institute of Science and Technology, Daejeon, 34141, South Korea
| | - Sangsoon Park
- Department of Biological Sciences, Korea Advanced Institute of Science and Technology, Daejeon, 34141, South Korea
| | - Sujeong Kwon
- Department of Biological Sciences, Korea Advanced Institute of Science and Technology, Daejeon, 34141, South Korea
| | - Yoonji Jung
- Department of Biological Sciences, Korea Advanced Institute of Science and Technology, Daejeon, 34141, South Korea
| | - JiSoo Park
- Department of Biological Sciences, Korea Advanced Institute of Science and Technology, Daejeon, 34141, South Korea
| | - Sieun S Kim
- Department of Biological Sciences, Korea Advanced Institute of Science and Technology, Daejeon, 34141, South Korea
| | - Adam Antebi
- Max Planck Institute for Biology of Ageing, Joseph-Stelzmann-Strasse 9b, Cologne, 50931, Germany.
- Cologne Excellence Cluster on Cellular Stress Responses in Aging Associated Diseases (CECAD), University of Cologne, Cologne, Germany.
| | - Seung-Jae V Lee
- Department of Biological Sciences, Korea Advanced Institute of Science and Technology, Daejeon, 34141, South Korea.
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38
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Peters JD, Peters MP, Bradshaw PC. Nicotinamide riboside functions during development while beta-hydroxybutyrate functions during adulthood to extend C. elegans lifespan. MICROPUBLICATION BIOLOGY 2023; 2023:10.17912/micropub.biology.000841. [PMID: 37325193 PMCID: PMC10267727 DOI: 10.17912/micropub.biology.000841] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Figures] [Subscribe] [Scholar Register] [Received: 04/22/2023] [Revised: 05/24/2023] [Accepted: 05/31/2023] [Indexed: 06/17/2023]
Abstract
Nicotinamide riboside (NR), a form of vitamin B3 and a nicotinamide adenine dinucleotide (NAD + ) precursor, has been shown to activate the mitochondrial unfolded protein response (UPR mt ) and extend the lifespan when supplemented to C. elegans. The ketone body and histone deacetylase (HDAC) inhibitor beta-hydroxybutyrate (BHB) has also been shown to extend C. elegans lifespan. Experiments were performed that showed that NR extended lifespan by acting almost exclusively during larval development, while BHB extended lifespan by acting during adulthood, and the combination of NR during development and BHB during adulthood unexpectedly decreased lifespan. This suggests that hormesis is involved in the lifespan-altering effects of BHB and NR and that they are inducing parallel longevity pathways that converge on a common downstream target.
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Affiliation(s)
- J. Dylan Peters
- James H. Quillen College of Medicine, East Tennessee State University, Johnson City, Tennessee, USA
| | | | - Patrick C. Bradshaw
- Department of Biomedical Sciences, East Tennessee State University, Johnson City, Tennessee, USA
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39
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Emerson FJ, Chiu C, Lin LY, Riedel CG, Zhu M, Lee SS. The chromatin factors SET-26 and HCF-1 oppose the histone deacetylase HDA-1 in longevity and gene regulation in C. elegans. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2023:2023.03.20.531974. [PMID: 36993207 PMCID: PMC10055255 DOI: 10.1101/2023.03.20.531974] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 06/19/2023]
Abstract
SET-26, HCF-1, and HDA-1 are highly conserved chromatin factors with key roles in development and aging. Here we present mechanistic insights into how these factors regulate gene expression and modulate longevity in C. elegans. We show that SET-26 and HCF-1 cooperate to regulate a common set of genes, and both antagonize the histone deacetylase HDA-1 to limit longevity. We propose a model in which SET-26 recruits HCF-1 to chromatin in somatic cells, where they stabilize each other at the promoters of a subset of genes, particularly mitochondrial function genes, and regulate their expression. HDA-1 opposes SET-26 and HCF-1 on the regulation of a subset of their common target genes and in longevity. Our findings suggest that SET-26, HCF-1, and HDA-1 comprise a mechanism to fine-tune gene expression and longevity and likely have important implications for the mechanistic understanding of how these factors function in diverse organisms, particularly in aging biology.
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Affiliation(s)
- Felicity J. Emerson
- Department of Molecular Biology and Genetics, Cornell University, Ithaca, New York, United States of America
| | - Caitlin Chiu
- Department of Molecular Biology and Genetics, Cornell University, Ithaca, New York, United States of America
| | - Laura Y. Lin
- Department of Molecular Biology and Genetics, Cornell University, Ithaca, New York, United States of America
| | - Christian G. Riedel
- Department of Biosciences and Nutrition, Karolinska Institutet, Huddinge, Sweden
| | - Ming Zhu
- National Institute of Biological Sciences, Beijing, China
| | - Siu Sylvia Lee
- Department of Molecular Biology and Genetics, Cornell University, Ithaca, New York, United States of America
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40
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Ji S, Xiong M, Chen H, Liu Y, Zhou L, Hong Y, Wang M, Wang C, Fu X, Sun X. Cellular rejuvenation: molecular mechanisms and potential therapeutic interventions for diseases. Signal Transduct Target Ther 2023; 8:116. [PMID: 36918530 PMCID: PMC10015098 DOI: 10.1038/s41392-023-01343-5] [Citation(s) in RCA: 30] [Impact Index Per Article: 30.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2022] [Revised: 12/16/2022] [Accepted: 01/19/2023] [Indexed: 03/16/2023] Open
Abstract
The ageing process is a systemic decline from cellular dysfunction to organ degeneration, with more predisposition to deteriorated disorders. Rejuvenation refers to giving aged cells or organisms more youthful characteristics through various techniques, such as cellular reprogramming and epigenetic regulation. The great leaps in cellular rejuvenation prove that ageing is not a one-way street, and many rejuvenative interventions have emerged to delay and even reverse the ageing process. Defining the mechanism by which roadblocks and signaling inputs influence complex ageing programs is essential for understanding and developing rejuvenative strategies. Here, we discuss the intrinsic and extrinsic factors that counteract cell rejuvenation, and the targeted cells and core mechanisms involved in this process. Then, we critically summarize the latest advances in state-of-art strategies of cellular rejuvenation. Various rejuvenation methods also provide insights for treating specific ageing-related diseases, including cellular reprogramming, the removal of senescence cells (SCs) and suppression of senescence-associated secretory phenotype (SASP), metabolic manipulation, stem cells-associated therapy, dietary restriction, immune rejuvenation and heterochronic transplantation, etc. The potential applications of rejuvenation therapy also extend to cancer treatment. Finally, we analyze in detail the therapeutic opportunities and challenges of rejuvenation technology. Deciphering rejuvenation interventions will provide further insights into anti-ageing and ageing-related disease treatment in clinical settings.
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Affiliation(s)
- Shuaifei Ji
- Research Center for Tissue Repair and Regeneration Affiliated to Medical Innovation Research Department and 4th Medical Center, PLA General Hospital and PLA Medical College; PLA Key Laboratory of Tissue Repair and Regenerative Medicine and Beijing Key Research Laboratory of Skin Injury, Repair and Regeneration; Research Unit of Trauma Care, Tissue Repair and Regeneration, Chinese Academy of Medical Sciences, 2019RU051, Beijing, 100048, P. R. China
| | - Mingchen Xiong
- Research Center for Tissue Repair and Regeneration Affiliated to Medical Innovation Research Department and 4th Medical Center, PLA General Hospital and PLA Medical College; PLA Key Laboratory of Tissue Repair and Regenerative Medicine and Beijing Key Research Laboratory of Skin Injury, Repair and Regeneration; Research Unit of Trauma Care, Tissue Repair and Regeneration, Chinese Academy of Medical Sciences, 2019RU051, Beijing, 100048, P. R. China
| | - Huating Chen
- Research Center for Tissue Repair and Regeneration Affiliated to Medical Innovation Research Department and 4th Medical Center, PLA General Hospital and PLA Medical College; PLA Key Laboratory of Tissue Repair and Regenerative Medicine and Beijing Key Research Laboratory of Skin Injury, Repair and Regeneration; Research Unit of Trauma Care, Tissue Repair and Regeneration, Chinese Academy of Medical Sciences, 2019RU051, Beijing, 100048, P. R. China
| | - Yiqiong Liu
- Research Center for Tissue Repair and Regeneration Affiliated to Medical Innovation Research Department and 4th Medical Center, PLA General Hospital and PLA Medical College; PLA Key Laboratory of Tissue Repair and Regenerative Medicine and Beijing Key Research Laboratory of Skin Injury, Repair and Regeneration; Research Unit of Trauma Care, Tissue Repair and Regeneration, Chinese Academy of Medical Sciences, 2019RU051, Beijing, 100048, P. R. China
| | - Laixian Zhou
- Research Center for Tissue Repair and Regeneration Affiliated to Medical Innovation Research Department and 4th Medical Center, PLA General Hospital and PLA Medical College; PLA Key Laboratory of Tissue Repair and Regenerative Medicine and Beijing Key Research Laboratory of Skin Injury, Repair and Regeneration; Research Unit of Trauma Care, Tissue Repair and Regeneration, Chinese Academy of Medical Sciences, 2019RU051, Beijing, 100048, P. R. China
| | - Yiyue Hong
- Research Center for Tissue Repair and Regeneration Affiliated to Medical Innovation Research Department and 4th Medical Center, PLA General Hospital and PLA Medical College; PLA Key Laboratory of Tissue Repair and Regenerative Medicine and Beijing Key Research Laboratory of Skin Injury, Repair and Regeneration; Research Unit of Trauma Care, Tissue Repair and Regeneration, Chinese Academy of Medical Sciences, 2019RU051, Beijing, 100048, P. R. China
| | - Mengyang Wang
- Research Center for Tissue Repair and Regeneration Affiliated to Medical Innovation Research Department and 4th Medical Center, PLA General Hospital and PLA Medical College; PLA Key Laboratory of Tissue Repair and Regenerative Medicine and Beijing Key Research Laboratory of Skin Injury, Repair and Regeneration; Research Unit of Trauma Care, Tissue Repair and Regeneration, Chinese Academy of Medical Sciences, 2019RU051, Beijing, 100048, P. R. China
| | - Chunming Wang
- State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences, University of Macau, Taipa, 999078, Macau SAR, China.
| | - Xiaobing Fu
- Research Center for Tissue Repair and Regeneration Affiliated to Medical Innovation Research Department and 4th Medical Center, PLA General Hospital and PLA Medical College; PLA Key Laboratory of Tissue Repair and Regenerative Medicine and Beijing Key Research Laboratory of Skin Injury, Repair and Regeneration; Research Unit of Trauma Care, Tissue Repair and Regeneration, Chinese Academy of Medical Sciences, 2019RU051, Beijing, 100048, P. R. China.
| | - Xiaoyan Sun
- Research Center for Tissue Repair and Regeneration Affiliated to Medical Innovation Research Department and 4th Medical Center, PLA General Hospital and PLA Medical College; PLA Key Laboratory of Tissue Repair and Regenerative Medicine and Beijing Key Research Laboratory of Skin Injury, Repair and Regeneration; Research Unit of Trauma Care, Tissue Repair and Regeneration, Chinese Academy of Medical Sciences, 2019RU051, Beijing, 100048, P. R. China.
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41
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Johns A, Higuchi-Sanabria R, Thorwald MA, Vilchez D. A tale of two pathways: Regulation of proteostasis by UPR mt and MDPs. Curr Opin Neurobiol 2023; 78:102673. [PMID: 36621224 PMCID: PMC9845188 DOI: 10.1016/j.conb.2022.102673] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2022] [Revised: 11/28/2022] [Accepted: 12/08/2022] [Indexed: 01/07/2023]
Abstract
Mitochondrial fitness is critical to organismal health and its impairment is associated with aging and age-related diseases. As such, numerous quality control mechanisms exist to preserve mitochondrial stability, including the unfolded protein response of the mitochondria (UPRmt). The UPRmt is a conserved mechanism that drives the transcriptional activation of mitochondrial chaperones, proteases, autophagy (mitophagy), and metabolism to promote restoration of mitochondrial function under stress conditions. UPRmt has direct ramifications in aging, and its activation is often ascribed to improve health whereas its dysfunction tends to correlate with disease. This review pairs a description of the most recent findings within the field of UPRmt with a more poorly understood field: mitochondria-derived peptides (MDPs). Similar to UPRmt, MDPs are microproteins derived from the mitochondria that can impact organismal health and longevity. We then highlight a tantalizing interconnection between UPRmt and MDPs wherein both mechanisms may be efficiently coordinated to maintain organismal health.
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Affiliation(s)
- Angela Johns
- Cologne Excellence Cluster for Cellular Stress Responses in Aging-Associated Diseases (CECAD), University of Cologne, Cologne, Germany. https://twitter.com/AngyJohns
| | - Ryo Higuchi-Sanabria
- Leonard Davis School of Gerontology, University of Southern California. 3715 McClintock Ave, University Park Campus, Los Angeles, CA 90089, USA.
| | - Max A Thorwald
- Leonard Davis School of Gerontology, University of Southern California. 3715 McClintock Ave, University Park Campus, Los Angeles, CA 90089, USA.
| | - David Vilchez
- Cologne Excellence Cluster for Cellular Stress Responses in Aging-Associated Diseases (CECAD), University of Cologne, Cologne, Germany; Institute for Genetics, University of Cologne, Cologne, Germany; Center for Molecular Medicine Cologne (CMMC), University of Cologne, Cologne, Germany; Faculty of Medicine, University Hospital Cologne, Cologne, Germany.
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42
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Protasoni M, Serrano M. Targeting Mitochondria to Control Ageing and Senescence. Pharmaceutics 2023; 15:352. [PMID: 36839673 PMCID: PMC9960816 DOI: 10.3390/pharmaceutics15020352] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2022] [Revised: 12/22/2022] [Accepted: 12/26/2022] [Indexed: 01/24/2023] Open
Abstract
Ageing is accompanied by a progressive impairment of cellular function and a systemic deterioration of tissues and organs, resulting in increased vulnerability to multiple diseases. Here, we review the interplay between two hallmarks of ageing, namely, mitochondrial dysfunction and cellular senescence. The targeting of specific mitochondrial features in senescent cells has the potential of delaying or even reverting the ageing process. A deeper and more comprehensive understanding of mitochondrial biology in senescent cells is necessary to effectively face this challenge. Here, we discuss the main alterations in mitochondrial functions and structure in both ageing and cellular senescence, highlighting the differences and similarities between the two processes. Moreover, we describe the treatments available to target these pathways and speculate on possible future directions of anti-ageing and anti-senescence therapies targeting mitochondria.
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Affiliation(s)
- Margherita Protasoni
- Institute for Research in Biomedicine (IRB Barcelona), Barcelona Institute of Science and Technology (BIST), 08028 Barcelona, Spain
| | - Manuel Serrano
- Institute for Research in Biomedicine (IRB Barcelona), Barcelona Institute of Science and Technology (BIST), 08028 Barcelona, Spain
- Catalan Institution for Research and Advanced Studies (ICREA), 08010 Barcelona, Spain
- Cambridge Institute of Science, Altos Labs, Granta Park, Cambridge CB21 6GP, UK
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43
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Cilleros-Holgado P, Gómez-Fernández D, Piñero-Pérez R, Reche-López D, Álvarez-Córdoba M, Munuera-Cabeza M, Talaverón-Rey M, Povea-Cabello S, Suárez-Carrillo A, Romero-González A, Suárez-Rivero JM, Romero-Domínguez JM, Sánchez-Alcázar JA. mtUPR Modulation as a Therapeutic Target for Primary and Secondary Mitochondrial Diseases. Int J Mol Sci 2023; 24:ijms24021482. [PMID: 36674998 PMCID: PMC9865803 DOI: 10.3390/ijms24021482] [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: 11/28/2022] [Revised: 01/04/2023] [Accepted: 01/09/2023] [Indexed: 01/14/2023] Open
Abstract
Mitochondrial dysfunction is a key pathological event in many diseases. Its role in energy production, calcium homeostasis, apoptosis regulation, and reactive oxygen species (ROS) balance render mitochondria essential for cell survival and fitness. However, there are no effective treatments for most primary and secondary mitochondrial diseases to this day. Therefore, new therapeutic approaches, such as the modulation of the mitochondrial unfolded protein response (mtUPR), are being explored. mtUPRs englobe several compensatory processes related to proteostasis and antioxidant system mechanisms. mtUPR activation, through an overcompensation for mild intracellular stress, promotes cell homeostasis and improves lifespan and disease alterations in biological models of mitochondrial dysfunction in age-related diseases, cardiopathies, metabolic disorders, and primary mitochondrial diseases. Although mtUPR activation is a promising therapeutic option for many pathological conditions, its activation could promote tumor progression in cancer patients, and its overactivation could lead to non-desired side effects, such as the increased heteroplasmy of mitochondrial DNA mutations. In this review, we present the most recent data about mtUPR modulation as a therapeutic approach, its role in diseases, and its potential negative consequences in specific pathological situations.
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44
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Functional Characterization of a Phf8 Processed Pseudogene in the Mouse Genome. Genes (Basel) 2023; 14:genes14010172. [PMID: 36672913 PMCID: PMC9859284 DOI: 10.3390/genes14010172] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2022] [Revised: 12/31/2022] [Accepted: 01/05/2023] [Indexed: 01/11/2023] Open
Abstract
Most pseudogenes are generated when an RNA transcript is reverse-transcribed and integrated into the genome at a new location. Pseudogenes are often considered as an imperfect and silent copy of a functional gene because of the accumulation of numerous mutations in their sequence. Here we report the presence of Pfh8-ps, a Phf8 retrotransposed pseudogene in the mouse genome, which has no disruptions in its coding sequence. We show that this pseudogene is mainly transcribed in testis and can produce a PHF8-PS protein in vivo. As the PHF8-PS protein has a well-conserved JmjC domain, we characterized its enzymatic activity and show that PHF8-PS does not have the intrinsic capability to demethylate H3K9me2 in vitro compared to the parental PHF8 protein. Surprisingly, PHF8-PS does not localize in the nucleus like PHF8, but rather is mostly located at the cytoplasm. Finally, our proteomic analysis of PHF8-PS-associated proteins revealed that PHF8-PS interacts not only with mitochondrial proteins, but also with prefoldin subunits (PFDN proteins) that deliver unfolded proteins to the cytosolic chaperonin complex implicated in the folding of cytosolic proteins. Together, our findings highlighted PHF8-PS as a new pseudogene-derived protein with distinct molecular functions from PHF8.
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Li TY, Gao AW, Li X, Li H, Liu YJ, Lalou A, Neelagandan N, Naef F, Schoonjans K, Auwerx J. V-ATPase/TORC1-mediated ATFS-1 translation directs mitochondrial UPR activation in C. elegans. J Cell Biol 2023; 222:e202205045. [PMID: 36314986 PMCID: PMC9623136 DOI: 10.1083/jcb.202205045] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2022] [Revised: 09/22/2022] [Accepted: 10/12/2022] [Indexed: 11/18/2022] Open
Abstract
To adapt mitochondrial function to the ever-changing intra- and extracellular environment, multiple mitochondrial stress response (MSR) pathways, including the mitochondrial unfolded protein response (UPRmt), have evolved. However, how the mitochondrial stress signal is sensed and relayed to UPRmt transcription factors, such as ATFS-1 in Caenorhabditis elegans, remains largely unknown. Here, we show that a panel of vacuolar H+-ATPase (v-ATPase) subunits and the target of rapamycin complex 1 (TORC1) activity are essential for the cytosolic relay of mitochondrial stress to ATFS-1 and for the induction of the UPRmt. Mechanistically, mitochondrial stress stimulates v-ATPase/Rheb-dependent TORC1 activation, subsequently promoting ATFS-1 translation. Increased translation of ATFS-1 upon mitochondrial stress furthermore relies on a set of ribosomal components but is independent of GCN-2/PEK-1 signaling. Finally, the v-ATPase and ribosomal subunits are required for mitochondrial surveillance and mitochondrial stress-induced longevity. These results reveal a v-ATPase-TORC1-ATFS-1 signaling pathway that links mitochondrial stress to the UPRmt through intimate crosstalks between multiple organelles.
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Affiliation(s)
- Terytty Yang Li
- Laboratory of Integrative Systems Physiology, Interfaculty Institute of Bioengineering, École Polytechnique Fédérale de Lausanne, Lausanne, Switzerland
| | - Arwen W. Gao
- Laboratory of Integrative Systems Physiology, Interfaculty Institute of Bioengineering, École Polytechnique Fédérale de Lausanne, Lausanne, Switzerland
| | - Xiaoxu Li
- Laboratory of Integrative Systems Physiology, Interfaculty Institute of Bioengineering, École Polytechnique Fédérale de Lausanne, Lausanne, Switzerland
| | - Hao Li
- Laboratory of Metabolic Signaling, Interfaculty Institute of Bioengineering, École Polytechnique Fédérale de Lausanne, Lausanne, Switzerland
| | - Yasmine J. Liu
- Laboratory of Integrative Systems Physiology, Interfaculty Institute of Bioengineering, École Polytechnique Fédérale de Lausanne, Lausanne, Switzerland
| | - Amelia Lalou
- Laboratory of Integrative Systems Physiology, Interfaculty Institute of Bioengineering, École Polytechnique Fédérale de Lausanne, Lausanne, Switzerland
| | - Nagammal Neelagandan
- Laboratory of Computational and Systems Biology, Institute of Bioengineering, School of Life Sciences, École Polytechnique Fédérale de Lausanne, Lausanne, Switzerland
| | - Felix Naef
- Laboratory of Computational and Systems Biology, Institute of Bioengineering, School of Life Sciences, École Polytechnique Fédérale de Lausanne, Lausanne, Switzerland
| | - Kristina Schoonjans
- Laboratory of Metabolic Signaling, Interfaculty Institute of Bioengineering, École Polytechnique Fédérale de Lausanne, Lausanne, Switzerland
| | - Johan Auwerx
- Laboratory of Integrative Systems Physiology, Interfaculty Institute of Bioengineering, École Polytechnique Fédérale de Lausanne, Lausanne, Switzerland
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Shao P, Liu Q, Qi HH. KDM7 Demethylases: Regulation, Function and Therapeutic Targeting. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2023; 1433:167-184. [PMID: 37751140 DOI: 10.1007/978-3-031-38176-8_8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/27/2023]
Abstract
It was more than a decade ago that PHF8, KDM7A/JHDM1D and PHF2 were first proposed to be a histone demethylase family and were named as KDM7 (lysine demethylase) family. Since then, knowledge of their demethylation activities, roles as co-regulators of transcription and roles in development and diseases such as cancer has been steadily growing. The demethylation activities of PHF8 and KDM7A toward various methylated histones including H3K9me2/1, H3K27me2 and H4K20me1 have been identified and proven in various cell types. In contrast, PHF2, due to a mutation of a key residue in an iron-binding domain, demethylates H3K9me2 upon PKA-mediated phosphorylation. Interestingly, it was reported that PHF2 possesses an unusual H4K20me3 demethylation activity, which was not observed for PHF8 and KDM7A. PHF8 has been most extensively studied with respect to its roles in development and oncogenesis, revealing that it contributes to regulation of the cell cycle, cell viability and cell migration. Moreover, accumulating lines of evidence demonstrated that the KDM7 family members are subjected to post-transcriptional and post-translational regulations, leading to a higher horizon for evaluating their actual protein expression and functions in development and cancer. This chapter provides a general view of the current understanding of the regulation and functions of the KDM7 family and discusses their potential as therapeutic targets in cancer as well as perspectives for further studies.
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Affiliation(s)
- Peng Shao
- Department of Anatomy and Cell Biology, Carver College of Medicine, University of Iowa, 51 Newton Road, Iowa City, IA, 52242, USA
| | - Qi Liu
- Department of Anatomy and Cell Biology, Carver College of Medicine, University of Iowa, 51 Newton Road, Iowa City, IA, 52242, USA
| | - Hank Heng Qi
- Department of Anatomy and Cell Biology, Carver College of Medicine, University of Iowa, 51 Newton Road, Iowa City, IA, 52242, USA.
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Santos AL, Sinha S. Ageing, Metabolic Dysfunction, and the Therapeutic Role of Antioxidants. Subcell Biochem 2023; 103:341-435. [PMID: 37120475 DOI: 10.1007/978-3-031-26576-1_15] [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
The gradual ageing of the world population has been accompanied by a dramatic increase in the prevalence of obesity and metabolic diseases, especially type 2 diabetes. The adipose tissue dysfunction associated with ageing and obesity shares many common physiological features, including increased oxidative stress and inflammation. Understanding the mechanisms responsible for adipose tissue dysfunction in obesity may help elucidate the processes that contribute to the metabolic disturbances that occur with ageing. This, in turn, may help identify therapeutic targets for the treatment of obesity and age-related metabolic disorders. Because oxidative stress plays a critical role in these pathological processes, antioxidant dietary interventions could be of therapeutic value for the prevention and/or treatment of age-related diseases and obesity and their complications. In this chapter, we review the molecular and cellular mechanisms by which obesity predisposes individuals to accelerated ageing. Additionally, we critically review the potential of antioxidant dietary interventions to counteract obesity and ageing.
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Affiliation(s)
- Ana L Santos
- IdISBA - Fundación de Investigación Sanitaria de las Islas Baleares, Palma, Spain.
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Li C, Li N, Zhang Z, Song Y, Li J, Wang Z, Bo H, Zhang Y. The specific mitochondrial unfolded protein response in fast- and slow-twitch muscles of high-fat diet-induced insulin-resistant rats. Front Endocrinol (Lausanne) 2023; 14:1127524. [PMID: 37008907 PMCID: PMC10061072 DOI: 10.3389/fendo.2023.1127524] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/19/2022] [Accepted: 03/06/2023] [Indexed: 03/18/2023] Open
Abstract
INTRODUCTION Skeletal muscle insulin resistance (IR) plays an important role in the pathogenesis of type 2 diabetes mellitus. Skeletal muscle is a heterogeneous tissue composed of different muscle fiber types that contribute distinctly to IR development. Glucose transport shows more protection in slow-twitch muscles than in fast-twitch muscles during IR development, while the mechanisms involved remain unclear. Therefore, we investigated the role of the mitochondrial unfolded protein response (UPRmt) in the distinct resistance of two types of muscle in IR. METHODS Male Wistar rats were divided into high-fat diet (HFD) feeding and control groups. We measured glucose transport, mitochondrial respiration, UPRmt and histone methylation modification of UPRmt-related proteins to examine the UPRmt in the slow fiber-enriched soleus (Sol) and fast fiber-enriched tibialis anterior (TA) under HFD conditions. RESULTS Our results indicate that 18 weeks of HFD can cause systemic IR, while the disturbance of Glut4-dependent glucose transport only occurred in fast-twitch muscle. The expression levels of UPRmt markers, including ATF5, HSP60 and ClpP, and the UPRmt-related mitokine MOTS-c were significantly higher in slow-twitch muscle than in fast-twitch muscle under HFD conditions. Mitochondrial respiratory function is maintained only in slow-twitch muscle. Additionally, in the Sol, histone methylation at the ATF5 promoter region was significantly higher than that in the TA after HFD feeding. CONCLUSION The expression of proteins involved in glucose transport in slow-twitch muscle remains almost unaltered after HFD intervention, whereas a significant decline of these proteins was observed in fast-twitch muscle. Specific activation of the UPRmt in slow-twitch muscle, accompanied by higher mitochondrial respiratory function and MOTS-c expression, may contribute to the higher resistance to HFD in slow-twitch muscle. Notably, the different histone modifications of UPRmt regulators may underlie the specific activation of the UPRmt in different muscle types. However, future work applying genetic or pharmacological approaches should further uncover the relationship between the UPRmt and insulin resistance.
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Affiliation(s)
- Can Li
- Tianjin Key Laboratory of Exercise Physiology and Sports Medicine, School of Exercise and Health, Tianjin University of Sport, Tianjin, China
| | - Nan Li
- Tianjin Key Laboratory of Exercise Physiology and Sports Medicine, School of Exercise and Health, Tianjin University of Sport, Tianjin, China
| | - Ziyi Zhang
- Tianjin Key Laboratory of Exercise Physiology and Sports Medicine, School of Exercise and Health, Tianjin University of Sport, Tianjin, China
| | - Yu Song
- Tianjin Key Laboratory of Exercise Physiology and Sports Medicine, School of Exercise and Health, Tianjin University of Sport, Tianjin, China
| | - Jialin Li
- Tianjin Key Laboratory of Exercise Physiology and Sports Medicine, School of Exercise and Health, Tianjin University of Sport, Tianjin, China
| | - Zhe Wang
- Tianjin Key Laboratory of Exercise Physiology and Sports Medicine, School of Exercise and Health, Tianjin University of Sport, Tianjin, China
| | - Hai Bo
- Tianjin Key Laboratory of Exercise Physiology and Sports Medicine, School of Exercise and Health, Tianjin University of Sport, Tianjin, China
- Department of Military Training Medicines, Logistics University of Chinese People’s Armed Police Force, Tianjin, China
- *Correspondence: Hai Bo, ; Yong Zhang,
| | - Yong Zhang
- Tianjin Key Laboratory of Exercise Physiology and Sports Medicine, School of Exercise and Health, Tianjin University of Sport, Tianjin, China
- *Correspondence: Hai Bo, ; Yong Zhang,
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Epigenetic Changes in Saccharomyces cerevisiae Alters the Aromatic Profile in Alcoholic Fermentation. Appl Environ Microbiol 2022; 88:e0152822. [PMID: 36374027 PMCID: PMC9746323 DOI: 10.1128/aem.01528-22] [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: 11/16/2022] Open
Abstract
Epigenetic changes in genomics provide phenotypic modification without DNA sequence alteration. This study shows that benzoic acid, a common food additive and known histone deacetylase inhibitor (HDACi), has an epigenetic effect on Saccharomyces cerevisiae. Benzoic acid stimulated formation of epigenetic histone marks H3K4Me2, H3K27Me2, H3K18ac, and H3Ser10p in S. cerevisiae and altered their phenotypic behavior, resulting in increased production of phenylethyl alcohol and ester compounds during alcoholic fermentation using wine as a representative model system. Our study demonstrates the HDACi activity of certain dietary compounds such as sodium butyrate, curcumin and anacardic acid, suggests the potential use of these dietary compounds in altering S. cerevisiae phenotypes without altering host-cell DNA. This study highlights the potential to use common dietary compounds to exploit epigenetic modifications for various fermentation and biotechnology applications as an alternative to genetic modification. These findings indicate that benzoic acid and other food additives may have potential epigenetic effects on human gut microbiota, in which several yeast species are involved. IMPORTANCE The manuscript investigates and reports for the first time utilizing a non-GMO approach to alter the fermentation process of Pinot Noir wines. We have experimentally demonstrated that certain dietary compounds possess histone deacetylase (HDAC) inhibiting activity and can alter the wine characteristics by potentially altering yeast gene transcription, which was resulted from epigenetic effects. We have previously proposed the term "nutrifermentics" to represent this newly proposed field of research that provides insights on the effect of certain dietary compounds on microbial strains and their potential application in fermentation. This technological approach is a novel way to manipulate microorganisms for innovative food and beverage production with quality attributes catering for consumer's needs. Using a multidisciplinary approach with an emphasis on food fermentation and biotechnology, this study will be substantially useful and of broad interest to food microbiologists and biotechnologists who seek for innovative concepts with real-world application potential.
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Li YJ, Jin X, Li D, Lu J, Zhang XN, Yang SJ, Zhao YX, Wu M. New insights into vascular aging: Emerging role of mitochondria function. Biomed Pharmacother 2022; 156:113954. [DOI: 10.1016/j.biopha.2022.113954] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2022] [Revised: 10/29/2022] [Accepted: 11/01/2022] [Indexed: 11/09/2022] Open
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