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Li S, Deng J, Sun D, Chen S, Yao X, Wang N, Zhang J, Gu Q, Zhang S, Wang J, Zhu S, Zhu H, Li H, Xu X, Wei F. FBXW7 alleviates hyperglycemia-induced endothelial oxidative stress injury via ROS and PARP inhibition. Redox Biol 2022; 58:102530. [PMID: 36427396 PMCID: PMC9692029 DOI: 10.1016/j.redox.2022.102530] [Citation(s) in RCA: 25] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2022] [Accepted: 10/31/2022] [Indexed: 11/16/2022] Open
Abstract
Diabetic retinopathy (DR) and other diabetic vascular complications are the leading cause of death and disability in patients with suboptimum glycemic control. In the pathogenesis of diabetic vascular diseases, hyperglycemia-induced oxidative stress, DNA damage, and poly-ADP-ribose-polymerase (PARP) hyperactivation play important roles in endothelial cell impairment. Adipose differentiation-related protein FBXW7 was reported to regulate PGC-1α stability and mitochondrial homeostasis. Here, we investigated the role and mechanism of FBXW7 in repairing endothelial oxidative stress injuries under hyperglycemic conditions. FBXW7 promoted the hampered activity of homologous recombination and non-homologues end joining pathway for repairing DNA double-strand breaks damage, an initiating factor for PARP hyperactivation and diabetic vascular complications. The abundant mobilization of DNA damage repair mediated by FBXW7 suppressed PARP activation, leading to downregulation of PARP expression and activity in both human endothelial cells and diabetic rat retinas. This provided a new method for PARP inhibition, superior to PARP inhibitors for treating diabetic vascular complication. Furthermore, FBXW7 rescued downregulated NAD+ levels and ameliorated mitochondrial dysfunction, thereby reducing superoxide production under hyperglycemic conditions. These effects reversed oxidative injury and vascular leakage in diabetic rat retina, providing a potential future treatment strategy.
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Affiliation(s)
- Shenping Li
- Department of Ophthalmology, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200080, China; Department of Ophthalmology, Shanghai General Hospital, Shanghai, 200080, China
| | - Junjie Deng
- Department of Ophthalmology, Shanghai General Hospital, Shanghai, 200080, China
| | - Dandan Sun
- Department of Ophthalmology, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200080, China; Department of Ophthalmology, Shanghai General Hospital, Shanghai, 200080, China
| | - Shimei Chen
- Department of Ophthalmology, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200080, China; Department of Ophthalmology, Shanghai General Hospital, Shanghai, 200080, China
| | - Xieyi Yao
- Department of Ophthalmology, Shanghai General Hospital, Shanghai, 200080, China
| | - Ning Wang
- Department of Ophthalmology, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200080, China; National Clinical Research Center for Eye Diseases, Shanghai, 200080, China; Department of Ophthalmology, Shanghai General Hospital, Shanghai, 200080, China
| | - Jian Zhang
- Department of Ophthalmology, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200080, China; National Clinical Research Center for Eye Diseases, Shanghai, 200080, China; Department of Ophthalmology, Shanghai General Hospital, Shanghai, 200080, China
| | - Qing Gu
- Department of Ophthalmology, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200080, China; National Clinical Research Center for Eye Diseases, Shanghai, 200080, China; Shanghai Key Laboratory of Ocular Fundus Diseases, Shanghai, 200080, China
| | - Shuchang Zhang
- Department of Ophthalmology, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200080, China; Department of Ophthalmology, Shanghai General Hospital, Shanghai, 200080, China
| | - Jing Wang
- Department of Ophthalmology, Shanghai General Hospital, Shanghai, 200080, China
| | - Shaopin Zhu
- Department of Ophthalmology, Shanghai General Hospital, Shanghai, 200080, China
| | - Hong Zhu
- Department of Ophthalmology, Shanghai General Hospital, Shanghai, 200080, China; Shanghai Engineering Center for Visual Science and Photomedicine, Shanghai, 200080, China
| | - Huiming Li
- Department of Ophthalmology, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200080, China
| | - Xun Xu
- Department of Ophthalmology, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200080, China; National Clinical Research Center for Eye Diseases, Shanghai, 200080, China; Department of Ophthalmology, Shanghai General Hospital, Shanghai, 200080, China; Shanghai Key Laboratory of Ocular Fundus Diseases, Shanghai, 200080, China; Shanghai Engineering Center for Visual Science and Photomedicine, Shanghai, 200080, China.
| | - Fang Wei
- Department of Ophthalmology, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200080, China; National Clinical Research Center for Eye Diseases, Shanghai, 200080, China; Department of Ophthalmology, Shanghai General Hospital, Shanghai, 200080, China; Shanghai Key Laboratory of Ocular Fundus Diseases, Shanghai, 200080, China; Shanghai Engineering Center for Visual Science and Photomedicine, Shanghai, 200080, China.
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Zha W, Sun Y, Gong W, Li L, Kim W, Li H. Ginseng and ginsenosides: Therapeutic potential for sarcopenia. Biomed Pharmacother 2022; 156:113876. [DOI: 10.1016/j.biopha.2022.113876] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2022] [Revised: 10/05/2022] [Accepted: 10/13/2022] [Indexed: 11/02/2022] Open
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Denaro CA, Haloush YI, Hsiao SY, Orgera JJ, Osorio T, Riggs LM, Sassaman JW, Williams SA, Monte Carlo A, Da Costa RT, Grigoriev A, Solesio ME. COVID-19 and neurodegeneration: The mitochondrial connection. Aging Cell 2022; 21:e13727. [PMID: 36219531 PMCID: PMC9649608 DOI: 10.1111/acel.13727] [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: 07/18/2022] [Revised: 09/16/2022] [Accepted: 09/25/2022] [Indexed: 01/25/2023] Open
Abstract
There is still a significant lack of knowledge regarding many aspects of the etiopathology and consequences of the severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection in humans. For example, the variety of molecular mechanisms mediating this infection, and the long-term consequences of the disease remain poorly understood. It first seemed like the SARS-CoV-2 infection primarily caused a serious respiratory syndrome. However, over the last years, an increasing number of studies also pointed towards the damaging effects of this infection has on the central nervous system (CNS). In fact, evidence suggests a possible disruption of the blood-brain barrier and deleterious effects on the CNS, especially in patients who already suffer from other pathologies, such as neurodegenerative disorders. The molecular mechanisms behind these effects on the CNS could involve the dysregulation of mitochondrial physiology, a well-known early marker of neurodegeneration and a hallmark of aging. Moreover, mitochondria are involved in the activation of the inflammatory response, which has also been broadly described in the CNS in COVID-19. Here, we critically review the current bibliography regarding the presence of neurodegenerative symptoms in COVID-19 patients, with a special emphasis on the mitochondrial mechanisms of these disorders.
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Affiliation(s)
- Christopher A. Denaro
- Department of Biology and Center for Computational and Integrative BiologyRutgers UniversityCamdenNew JerseyUSA
| | - Yara I. Haloush
- Department of Biology and Center for Computational and Integrative BiologyRutgers UniversityCamdenNew JerseyUSA
| | - Samuel Y. Hsiao
- Department of Biology and Center for Computational and Integrative BiologyRutgers UniversityCamdenNew JerseyUSA
| | - John J. Orgera
- Department of Biology and Center for Computational and Integrative BiologyRutgers UniversityCamdenNew JerseyUSA
| | - Teresa Osorio
- Department of Biology and Center for Computational and Integrative BiologyRutgers UniversityCamdenNew JerseyUSA
| | - Lindsey M. Riggs
- Department of Biology and Center for Computational and Integrative BiologyRutgers UniversityCamdenNew JerseyUSA
| | - Joshua W. Sassaman
- Department of Biology and Center for Computational and Integrative BiologyRutgers UniversityCamdenNew JerseyUSA
| | - Sarah A. Williams
- Department of Biology and Center for Computational and Integrative BiologyRutgers UniversityCamdenNew JerseyUSA
| | - Anthony R. Monte Carlo
- Department of Biology and Center for Computational and Integrative BiologyRutgers UniversityCamdenNew JerseyUSA
| | - Renata T. Da Costa
- Department of Biology and Center for Computational and Integrative BiologyRutgers UniversityCamdenNew JerseyUSA
| | - Andrey Grigoriev
- Department of Biology and Center for Computational and Integrative BiologyRutgers UniversityCamdenNew JerseyUSA
| | - Maria E. Solesio
- Department of Biology and Center for Computational and Integrative BiologyRutgers UniversityCamdenNew JerseyUSA
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54
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Huang CC, Liu HY, Hsu TW, Lee WC. Updates on the Pivotal Roles of Mitochondria in Urothelial Carcinoma. Biomedicines 2022; 10:biomedicines10102453. [PMID: 36289714 PMCID: PMC9599371 DOI: 10.3390/biomedicines10102453] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2022] [Revised: 09/27/2022] [Accepted: 09/28/2022] [Indexed: 11/16/2022] Open
Abstract
Mitochondria are important organelles responsible for energy production, redox homeostasis, oncogenic signaling, cell death, and apoptosis. Deregulated mitochondrial metabolism and biogenesis are often observed during cancer development and progression. Reports have described the crucial roles of mitochondria in urothelial carcinoma (UC), which is a major global health challenge. This review focuses on research advances in the role of mitochondria in UC. Here, we discuss the pathogenic roles of mitochondria in UC and update the mitochondria-targeted therapies. We aim to offer a better understanding of the mitochondria-modulated pathogenesis of UC and hope that this review will allow the development of novel mitochondria-targeted therapies.
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Affiliation(s)
- Chiang-Chi Huang
- Division of Nephrology, Department of Internal Medicine, Kaohsiung Chang Gung Memorial Hospital and Chang Gung University College of Medicine, Kaohsiung 83301, Taiwan
| | - Hui-Ying Liu
- Department of Urology, Kaohsiung Chang Gung Memorial Hospital and Chang Gung University College of Medicine, Kaohsiung 83301, Taiwan
| | - Tsuen-Wei Hsu
- Division of Nephrology, Department of Internal Medicine, Kaohsiung Chang Gung Memorial Hospital and Chang Gung University College of Medicine, Kaohsiung 83301, Taiwan
| | - Wen-Chin Lee
- Division of Nephrology, Department of Internal Medicine, Kaohsiung Chang Gung Memorial Hospital and Chang Gung University College of Medicine, Kaohsiung 83301, Taiwan
- Correspondence: ; Tel.: +886-7-731-7123 (ext. 8306)
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Fujii M, Setoyama D, Gotoh K, Dozono Y, Yagi M, Ikeda M, Ide T, Uchiumi T, Kang D. TFAM expression in brown adipocytes confers obesity resistance by secreting extracellular vesicles that promote self-activation. iScience 2022; 25:104889. [PMID: 36046191 PMCID: PMC9421388 DOI: 10.1016/j.isci.2022.104889] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2022] [Revised: 06/03/2022] [Accepted: 08/03/2022] [Indexed: 11/17/2022] Open
Abstract
The occurrence of diet-induced obesity has been increasing worldwide and has become a major health concern. Mitochondria are densely distributed in brown adipose tissue and are involved in lipid consumption. Therefore, increasing energy expenditure through the activation of brown adipocytes may be a potential therapy for obesity. Our findings showed that mitochondrial transcription factor A (TFAM) homozygous transgenic (TgTg) mice had highly activated brown adipocytes and increased expression of oxidative phosphorylation, leading to resistance to obesity. Transplantation models of TFAM-expressing brown adipocytes could mimic the phenotype of TFAM TgTg mice, and proving their anti-obesity effect. We found that brown adipocytes secrete exosomes which enable self-activation in an autocrine and paracrine manner. The secretion was enhanced in TFAM TgTg brown adipocytes, resulting in a higher activation. These findings may lead to a promising treatment strategy for obesity through selective stimulation of exosome secretion. Human TFAM overexpression in BAT promotes strong anti-obesity effects Increasing mitochondrial function in hTFAM TgTg mice facilitates EVs secretion Enhanced EV released in TgTg brown adipocytes induce self-differentiation/activation
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Affiliation(s)
- Masakazu Fujii
- Department of Clinical Chemistry and Laboratory Medicine, Graduate School of Medical Sciences, Kyushu University, Fukuoka 812-8582, Japan
- Department of Internal Medicine, Fukuoka Prefectural Social Insurance Medical Association, Inatsuki Hospital, Kama 820-0207, Japan
- Department of Internal Medicine and Bioregulatory Science, Graduate School of Medical Sciences, Kyushu University, Fukuoka 812-8582, Japan
- Corresponding author
| | - Daiki Setoyama
- Department of Clinical Chemistry and Laboratory Medicine, Graduate School of Medical Sciences, Kyushu University, Fukuoka 812-8582, Japan
| | - Kazuhito Gotoh
- Department of Clinical Chemistry and Laboratory Medicine, Graduate School of Medical Sciences, Kyushu University, Fukuoka 812-8582, Japan
| | - Yushi Dozono
- Department of Clinical Chemistry and Laboratory Medicine, Graduate School of Medical Sciences, Kyushu University, Fukuoka 812-8582, Japan
| | - Mikako Yagi
- Department of Clinical Chemistry and Laboratory Medicine, Graduate School of Medical Sciences, Kyushu University, Fukuoka 812-8582, Japan
- Department of Health Sciences, Graduate School of Medical Sciences, Kyushu University, Fukuoka 812-8582, Japan
| | - Masataka Ikeda
- Department of Cardiovascular Medicine, Graduate School of Medical Sciences, Kyushu University, Fukuoka 812-8582, Japan
| | - Tomomi Ide
- Department of Cardiovascular Medicine, Graduate School of Medical Sciences, Kyushu University, Fukuoka 812-8582, Japan
| | - Takeshi Uchiumi
- Department of Clinical Chemistry and Laboratory Medicine, Graduate School of Medical Sciences, Kyushu University, Fukuoka 812-8582, Japan
- Department of Health Sciences, Graduate School of Medical Sciences, Kyushu University, Fukuoka 812-8582, Japan
| | - Dongchon Kang
- Department of Clinical Chemistry and Laboratory Medicine, Graduate School of Medical Sciences, Kyushu University, Fukuoka 812-8582, Japan
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56
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Gomisin G improves muscle strength by enhancing mitochondrial biogenesis and function in disuse muscle atrophic mice. Biomed Pharmacother 2022; 153:113406. [DOI: 10.1016/j.biopha.2022.113406] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2022] [Revised: 07/07/2022] [Accepted: 07/08/2022] [Indexed: 11/21/2022] Open
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Ho CL, Kao NJ, Lin CI, Cross TWL, Lin SH. Quercetin Increases Mitochondrial Biogenesis and Reduces Free Radicals in Neuronal SH-SY5Y Cells. Nutrients 2022; 14:nu14163310. [PMID: 36014814 PMCID: PMC9414536 DOI: 10.3390/nu14163310] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2022] [Revised: 08/06/2022] [Accepted: 08/09/2022] [Indexed: 11/16/2022] Open
Abstract
Alzheimer’s disease (AD) is a common neurodegenerative disorder that causes dementia and affects millions of people worldwide. The mechanism underlying AD is unclear; however, oxidative stress and mitochondrial biogenesis have been reported to be involved in AD progression. Previous research has also reported the reduction in mitochondrial biogenesis in the brains of patients with AD. Quercetin (QE), a type of polyphenol, has been found to be capable of increasing mitochondrial biogenesis in the body. Accordingly, we explored whether QE could reduce amyloid beta (Aβ) accumulation caused by hydrogen peroxide (H2O2)-induced oxidative stress in SH-SY5Y cells. Our results revealed that QE stimulated the expression of mitochondrial-related proteins such as SIRT1, PGC-1α, and TFAM and subsequently activated mitochondrial biogenesis. Additionally, QE increased ADAM10 expression but reduced H2O2-induced reactive oxygen species production, apoptosis, β-site amyloid precursor protein cleaving enzyme 1 expression, and Aβ accumulation in the SH-SY5Y cells. These findings indicate that QE can effectively elevate mitochondrial biogenesis-related proteins and reduce the damage caused by oxidative stress, making it a promising option for protecting neuronal cells.
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Affiliation(s)
- Chia-Ling Ho
- School of Nutrition and Health Sciences, Taipei Medical University, Taipei 110, Taiwan
| | - Ning-Jo Kao
- Department of Nutrition and Health Sciences, Kainan University, Taoyuan 338, Taiwan
| | - Ching-I Lin
- Department of Nutrition and Health Sciences, Kainan University, Taoyuan 338, Taiwan
| | - Tzu-Wen L. Cross
- Department of Nutrition Science, Purdue University, West Lafayette, IN 47907, USA
| | - Shyh-Hsiang Lin
- School of Nutrition and Health Sciences, Taipei Medical University, Taipei 110, Taiwan
- Master Program in Food Safety, Taipei Medical University, Taipei 110, Taiwan
- Correspondence: ; Tel.: +886-2-2736-1661 (ext. 6555); Fax: +886-2-2737-3112
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58
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Bai Y, Wu J, Yang Z, Wang X, Zhang D, Ma J. Mitochondrial quality control in cardiac ischemia/reperfusion injury: new insights into mechanisms and implications. Cell Biol Toxicol 2022; 39:33-51. [PMID: 35951200 DOI: 10.1007/s10565-022-09716-2] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2022] [Accepted: 04/07/2022] [Indexed: 11/25/2022]
Abstract
The current effective method for the treatment of myocardial infarction is timely restoration of the blood supply to the ischemic area of the heart. Although reperfusion is essential for reestablishing oxygen and nutrient supplies, it often leads to additional myocardial damage, creating an important clinical dilemma. Reports from long-term studies have confirmed that mitochondrial damage is the critical mechanism in cardiac ischemia/reperfusion (I/R) injury. Mitochondria are dynamic and possess a quality control system that targets mitochondrial quantity and quality by modifying mitochondrial fusion, fission, mitophagy, and biogenesis and protein homeostasis to maintain a healthy mitochondrial network. The system of mitochondrial quality control involves complex molecular machinery that is highly interconnected and associated with pathological changes such as oxidative stress, calcium overload, and endoplasmic reticulum (ER) stress. Because of the critical role of the mitochondrial quality control systems, many reports have suggested that defects in this system are among the molecular mechanisms underlying myocardial reperfusion injury. In this review, we briefly summarize the important role of the mitochondrial quality control in cardiomyocyte function and focus on the current understanding of the regulatory mechanisms and molecular pathways involved in mitochondrial quality control in cardiac I/R damage.
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Affiliation(s)
- Yang Bai
- Department of Anesthesiology, Beijing Anzhen Hospital, Capital Medical University, Beijing Institute of Heart Lung and Blood Vessel Diseases, No.2 Anzhen Road, Chaoyang District, Beijing, 100029, People's Republic of China
| | - Jinjing Wu
- Department of Anesthesiology, Beijing Anzhen Hospital, Capital Medical University, Beijing Institute of Heart Lung and Blood Vessel Diseases, No.2 Anzhen Road, Chaoyang District, Beijing, 100029, People's Republic of China
| | - Zhenyu Yang
- Department of Endocrinology, South China Hospital of Shenzhen University, Shenzhen, People's Republic of China
| | - Xu'an Wang
- Department of Anesthesiology, Beijing Anzhen Hospital, Capital Medical University, Beijing Institute of Heart Lung and Blood Vessel Diseases, No.2 Anzhen Road, Chaoyang District, Beijing, 100029, People's Republic of China
| | - Dongni Zhang
- Department of Anesthesiology, Beijing Anzhen Hospital, Capital Medical University, Beijing Institute of Heart Lung and Blood Vessel Diseases, No.2 Anzhen Road, Chaoyang District, Beijing, 100029, People's Republic of China
| | - Jun Ma
- Department of Anesthesiology, Beijing Anzhen Hospital, Capital Medical University, Beijing Institute of Heart Lung and Blood Vessel Diseases, No.2 Anzhen Road, Chaoyang District, Beijing, 100029, People's Republic of China.
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Tong T, Qin X, Jiang Y, Guo H, Wang X, Li Y, Xie F, Lu H, Zhai P, Ma H, Zhang J. A novel CREB5/TOP1MT axis confers cisplatin resistance through inhibiting mitochondrial apoptosis in head and neck squamous cell carcinoma. BMC Med 2022; 20:231. [PMID: 35773668 PMCID: PMC9248137 DOI: 10.1186/s12916-022-02409-x] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/20/2021] [Accepted: 05/17/2022] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Cisplatin resistance is one of the main causes of treatment failure and death in head and neck squamous cell carcinoma (HNSCC). A more comprehensive understanding of the cisplatin resistance mechanism and the development of effective treatment strategies are urgent. METHODS RNA sequencing, RT-PCR, and immunoblotting were used to identify differentially expressed genes associated with cisplatin resistance. Gain- and loss-of-function experiments were performed to detect the effect of CREB5 on cisplatin resistance and mitochondrial apoptosis in HNSCC. Chromatin immunoprecipitation (ChIP) assay, dual-luciferase reporter assay, and immunoblotting experiments were performed to explore the underlying mechanisms of CREB5. RESULTS CREB5 was significantly upregulated in cisplatin-resistant HNSCC (CR-HNSCC) patients, which was correlated with poor prognosis. CREB5 overexpression strikingly facilitated the cisplatin resistance of HNSCC cells in vitro and in vivo, while CREB5 knockdown enhanced cisplatin sensitivity in CR-HNSCC cells. Interestingly, the activation of AKT signaling induced by cisplatin promoted nucleus translocation of CREB5 in CR-HNSCC cells. Furthermore, CREB5 transcriptionally activated TOP1MT expression depending on the canonical motif. Moreover, CREB5 silencing could trigger mitochondrial apoptosis and overcome cisplatin resistance in CR-HNSCC cells, which could be reversed by TOP1MT overexpression. Additionally, double-targeting of CREB5 and TOP1MT could combat cisplatin resistance of HNSCC in vivo. CONCLUSIONS Our findings reveal a novel CREB5/TOP1MT axis conferring cisplatin resistance in HNSCC, which provides a new basis to develop effective strategies for overcoming cisplatin resistance.
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Affiliation(s)
- Tong Tong
- Department of Oral and Maxillofacial-Head & Neck Oncology, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine; College of Stomatology, Shanghai Jiao Tong University; National Center for Stomatology; National Clinical Research Center for Oral Diseases; Shanghai Key Laboratory of Stomatology, No. 639, Zhizaoju Rd, Shanghai, 200011, People's Republic of China.,Department of Oral and Maxillofacial Surgery, Shanghai Stomatological Hospital & School of Stomatology, Fudan University, Shanghai, 200001, People's Republic of China.,Shanghai Key Laboratory of Craniomaxillofacial Development and Diseases, Fudan University, Shanghai, 200002, People's Republic of China
| | - Xing Qin
- Department of Oral and Maxillofacial-Head & Neck Oncology, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine; College of Stomatology, Shanghai Jiao Tong University; National Center for Stomatology; National Clinical Research Center for Oral Diseases; Shanghai Key Laboratory of Stomatology, No. 639, Zhizaoju Rd, Shanghai, 200011, People's Republic of China
| | - Yingying Jiang
- Department of Dentistry, Affiliated Hospital of Weifang Medical University, Weifang, 261000, People's Republic of China
| | - Haiyan Guo
- Department of Clinical Laboratory, Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200011, People's Republic of China
| | - Xiaoning Wang
- Department of Oral Pathology, Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200011, People's Republic of China
| | - Yan Li
- Shanghai Institute of Immunology Center for Microbiota & Immune Related Diseases, Institute of Translational Medicine, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200080, People's Republic of China
| | - Fei Xie
- Department of Oral and Maxillofacial-Head & Neck Oncology, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine; College of Stomatology, Shanghai Jiao Tong University; National Center for Stomatology; National Clinical Research Center for Oral Diseases; Shanghai Key Laboratory of Stomatology, No. 639, Zhizaoju Rd, Shanghai, 200011, People's Republic of China
| | - Hao Lu
- Department of Oral and Maxillofacial-Head & Neck Oncology, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine; College of Stomatology, Shanghai Jiao Tong University; National Center for Stomatology; National Clinical Research Center for Oral Diseases; Shanghai Key Laboratory of Stomatology, No. 639, Zhizaoju Rd, Shanghai, 200011, People's Republic of China
| | - Peisong Zhai
- Department of Oral and Maxillofacial-Head & Neck Oncology, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine; College of Stomatology, Shanghai Jiao Tong University; National Center for Stomatology; National Clinical Research Center for Oral Diseases; Shanghai Key Laboratory of Stomatology, No. 639, Zhizaoju Rd, Shanghai, 200011, People's Republic of China
| | - Hailong Ma
- Department of Oral and Maxillofacial-Head & Neck Oncology, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine; College of Stomatology, Shanghai Jiao Tong University; National Center for Stomatology; National Clinical Research Center for Oral Diseases; Shanghai Key Laboratory of Stomatology, No. 639, Zhizaoju Rd, Shanghai, 200011, People's Republic of China.
| | - Jianjun Zhang
- Department of Oral and Maxillofacial-Head & Neck Oncology, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine; College of Stomatology, Shanghai Jiao Tong University; National Center for Stomatology; National Clinical Research Center for Oral Diseases; Shanghai Key Laboratory of Stomatology, No. 639, Zhizaoju Rd, Shanghai, 200011, People's Republic of China.
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Kurchaba N, Charette JM, LeMoine CMR. Metabolic consequences of PGC-1α dysregulation in adult zebrafish muscle. Am J Physiol Regul Integr Comp Physiol 2022; 323:R319-R330. [PMID: 35670765 DOI: 10.1152/ajpregu.00188.2021] [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: 11/22/2022]
Abstract
The peroxisome proliferator activated receptor gamma co-activator 1 alpha (PGC-1α) is central to the regulation of cellular and mitochondrial energy homeostasis in mammals, but its role in other vertebrates remains unclear. Indeed, previous work suggests extensive structural and functional divergence of PGC-1α in teleosts but this remains to be directly tested. Here, we describe the initial characterization of heterozygous PGC-1α mutant zebrafish lines created by CRISPR-Cas9 disruptions of an evolutionarily conserved regulatory region of the PGC-1α proximal promoter. Using qPCR, we confirmed the disruption of PGC-1α gene expression in striated muscle, leading to a simultaneous 4-fold increase in mixed skeletal muscle PGC-1α mRNA levels and an opposite 4-fold downregulation in cardiac muscle. In mixed skeletal muscle, most downstream effector genes were largely unaffected yet two mitochondrial lipid transporters, carnitine palmitoyltransferase 1 and 2, were strongly induced. Conversely, PGC-1α depression in cardiac muscle reduced the expression of several transcriptional regulators (estrogen related receptor alpha, nuclear respiratory factor 1 and PGC-1β) without altering metabolic gene expression. Using high resolution respirometry, we determined that white muscle exhibited increased lipid oxidative capacity with little difference in markers of mitochondrial abundance. Finally, using whole animal intermittent respirometry, we show that mutant fish exhibit a 2-fold higher basal metabolism than their wildtype counterparts. Altogether, this new model confirms a central but complex role for PGC-1α in mediating energy utilization in zebrafish and we propose its use as a valuable tool to explore the intricate regulatory pathways of energy homeostasis in a popular biomedical model.
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Affiliation(s)
| | - J Michael Charette
- Department of Chemistry, Brandon University, Brandon, MB, Canada.,Children's Hospital Research Institute of Manitoba (CHRIM), Winnipeg, MB, Canada.,CancerCare Manitoba Research Institute, Winnipeg, MB, Canada
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Xie X, Zhou J, Hu L, Shu R, Zhang M, Sun L, Wu F, Fu Z, Li Z. Oral exposure to a hexafluoropropylene oxide trimer acid (HFPO-TA) disrupts mitochondrial function and biogenesis in mice. JOURNAL OF HAZARDOUS MATERIALS 2022; 430:128376. [PMID: 35158245 DOI: 10.1016/j.jhazmat.2022.128376] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/11/2021] [Revised: 01/17/2022] [Accepted: 01/25/2022] [Indexed: 06/14/2023]
Abstract
Hexafluoropropylene oxide trimer acid (HFPO-TA) is reported to have hepatotoxicity, lipotoxicity, and cytotoxicity. In this study, the toxicological effects of HFPO-TA on mitochondrial function and biogenesis were studied. Mice were exposed to drinking water which contained either 2, 20, or 200 μg/L HFPO-TA. Results showed exposure to HFPO-TA induced disadvantageous physiological changes in mice, including increases in liver weight, altered cell morphology, and inflammatory responses. Specifically, exposure to 200 μg/L HFPO-TA increased mitochondria number, relative mitochondrial DNA (mtDNA) content, and mRNA levels of mitochondrial genes encoded by mtDNA. Significant increases in TFAM mRNA and protein levels were also observed. Liver metabolome analysis also showed exposure to 200 μg/L HFPO-TA further enhanced increases in metabolites and altered metabolic pathways that correlated with mitochondrial function, especially the production of ATP. HFPO-TA exposure increased protein expression of mitochondrial complex I-V, and the activities of key enzymes involved in TCA cycle (α-ketoglutarate dehydrogenase, citrate synthase, and succinate dehydrogenase). Furthermore, exposure to 200 μg/L HFPO-TA significantly up-regulating mRNA and protein levels of Opa1, Mfn1, Mfn2, Fis1, and Mff, but did not change Drp1. These findings suggest HFPO-TA could have detrimental effects on health of animals, particularly it was associated with disrupted mitochondrial energy metabolism.
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Affiliation(s)
- Xiaoxian Xie
- College of Biotechnology and Bioengineering, Zhejiang University of Technology, Hangzhou 310032, China
| | - Jiafeng Zhou
- College of Biotechnology and Bioengineering, Zhejiang University of Technology, Hangzhou 310032, China
| | - Luting Hu
- College of Biotechnology and Bioengineering, Zhejiang University of Technology, Hangzhou 310032, China
| | - Ruonan Shu
- College of Biotechnology and Bioengineering, Zhejiang University of Technology, Hangzhou 310032, China
| | - Mengya Zhang
- College of Biotechnology and Bioengineering, Zhejiang University of Technology, Hangzhou 310032, China
| | - Lei Sun
- College of Biotechnology and Bioengineering, Zhejiang University of Technology, Hangzhou 310032, China
| | - Fengchun Wu
- Department of Psychiatry, The Affiliated Brain Hospital of Guangzhou Medical University, Guangzhou 510370, China; Guangdong Engineering Technology Research Center for Translational Medicine of Mental Disorders, Guangzhou 510370, China
| | - Zhengwei Fu
- College of Biotechnology and Bioengineering, Zhejiang University of Technology, Hangzhou 310032, China.
| | - Zezhi Li
- Department of Psychiatry, The Affiliated Brain Hospital of Guangzhou Medical University, Guangzhou 510370, China; Guangdong Engineering Technology Research Center for Translational Medicine of Mental Disorders, Guangzhou 510370, China.
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Schreier HK, Wiehe RS, Ricchetti M, Wiesmüller L. Polymerase ζ is Involved in Mitochondrial DNA Maintenance Processes in Concert with APE1 Activity. Genes (Basel) 2022; 13:genes13050879. [PMID: 35627264 PMCID: PMC9141751 DOI: 10.3390/genes13050879] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2022] [Revised: 05/10/2022] [Accepted: 05/11/2022] [Indexed: 01/25/2023] Open
Abstract
Mitochondrial DNA (mtDNA) damaged by reactive oxygen species (ROS) triggers so far poorly understood processes of mtDNA maintenance that are coordinated by a complex interplay among DNA repair, DNA degradation, and DNA replication. This study was designed to identify the proteins involved in mtDNA maintenance by applying a special long-range PCR, reflecting mtDNA integrity in the minor arc. A siRNA screening of literature-based candidates was performed under conditions of enforced oxidative phosphorylation revealing the functional group of polymerases and therein polymerase ζ (POLZ) as top hits. Thus, POLZ knockdown caused mtDNA accumulation, which required the activity of the base excision repair (BER) nuclease APE1, and was followed by compensatory mtDNA replication determined by the single-cell mitochondrial in situ hybridization protocol (mTRIP). Quenching reactive oxygen species (ROS) in mitochondria unveiled an additional, ROS-independent involvement of POLZ in the formation of a typical deletion in the minor arc region. Together with data demonstrating the localization of POLZ in mitochondria, we suggest that POLZ plays a significant role in mtDNA turnover, particularly under conditions of oxidative stress.
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Affiliation(s)
- Heike Katrin Schreier
- Department of Obstetrics and Gynecology, Ulm University, 89075 Ulm, Germany; (H.K.S.); (R.S.W.)
| | - Rahel Stefanie Wiehe
- Department of Obstetrics and Gynecology, Ulm University, 89075 Ulm, Germany; (H.K.S.); (R.S.W.)
| | - Miria Ricchetti
- Department of Developmental and Stem Cell Biology, Institute Pasteur, CEDEX 15, 75724 Paris, France;
| | - Lisa Wiesmüller
- Department of Obstetrics and Gynecology, Ulm University, 89075 Ulm, Germany; (H.K.S.); (R.S.W.)
- Correspondence:
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63
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Adipose mitochondrial metabolism controls body growth by modulating systemic cytokine and insulin signaling. Cell Rep 2022; 39:110802. [PMID: 35545043 DOI: 10.1016/j.celrep.2022.110802] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2021] [Revised: 02/09/2022] [Accepted: 04/19/2022] [Indexed: 12/14/2022] Open
Abstract
Animals must adapt their growth to fluctuations in nutrient availability to ensure proper development. These adaptations often rely on specific nutrient-sensing tissues that control whole-body physiology through inter-organ communication. While the signaling mechanisms that underlie this communication are well studied, the contributions of metabolic alterations in nutrient-sensing tissues are less clear. Here, we show how the reprogramming of adipose mitochondria controls whole-body growth in Drosophila larvae. We find that dietary nutrients alter fat-body mitochondrial morphology to lower their bioenergetic activity, leading to rewiring of fat-body glucose metabolism. Strikingly, we find that genetic reduction of mitochondrial bioenergetics just in the fat body is sufficient to accelerate body growth and development. These growth effects are caused by inhibition of the fat-derived secreted peptides ImpL2 and tumor necrosis factor alpha (TNF-α)/Eiger, leading to enhanced systemic insulin signaling. Our work reveals how reprogramming of mitochondrial metabolism in one nutrient-sensing tissue can couple nutrient availability to whole-body growth.
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Sidarala V, Zhu J, Levi-D'Ancona E, Pearson GL, Reck EC, Walker EM, Kaufman BA, Soleimanpour SA. Mitofusin 1 and 2 regulation of mitochondrial DNA content is a critical determinant of glucose homeostasis. Nat Commun 2022; 13:2340. [PMID: 35487893 PMCID: PMC9055072 DOI: 10.1038/s41467-022-29945-7] [Citation(s) in RCA: 23] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2021] [Accepted: 03/21/2022] [Indexed: 02/01/2023] Open
Abstract
The dynamin-like GTPases Mitofusin 1 and 2 (Mfn1 and Mfn2) are essential for mitochondrial function, which has been principally attributed to their regulation of fission/fusion dynamics. Here, we report that Mfn1 and 2 are critical for glucose-stimulated insulin secretion (GSIS) primarily through control of mitochondrial DNA (mtDNA) content. Whereas Mfn1 and Mfn2 individually were dispensable for glucose homeostasis, combined Mfn1/2 deletion in β-cells reduced mtDNA content, impaired mitochondrial morphology and networking, and decreased respiratory function, ultimately resulting in severe glucose intolerance. Importantly, gene dosage studies unexpectedly revealed that Mfn1/2 control of glucose homeostasis was dependent on maintenance of mtDNA content, rather than mitochondrial structure. Mfn1/2 maintain mtDNA content by regulating the expression of the crucial mitochondrial transcription factor Tfam, as Tfam overexpression ameliorated the reduction in mtDNA content and GSIS in Mfn1/2-deficient β-cells. Thus, the primary physiologic role of Mfn1 and 2 in β-cells is coupled to the preservation of mtDNA content rather than mitochondrial architecture, and Mfn1 and 2 may be promising targets to overcome mitochondrial dysfunction and restore glucose control in diabetes.
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Affiliation(s)
- Vaibhav Sidarala
- Division of Metabolism, Endocrinology & Diabetes and Department of Internal Medicine, University of Michigan, Ann Arbor, MI, 48105, United States
| | - Jie Zhu
- Division of Metabolism, Endocrinology & Diabetes and Department of Internal Medicine, University of Michigan, Ann Arbor, MI, 48105, United States
| | - Elena Levi-D'Ancona
- Division of Metabolism, Endocrinology & Diabetes and Department of Internal Medicine, University of Michigan, Ann Arbor, MI, 48105, United States
| | - Gemma L Pearson
- Division of Metabolism, Endocrinology & Diabetes and Department of Internal Medicine, University of Michigan, Ann Arbor, MI, 48105, United States
| | - Emma C Reck
- Division of Metabolism, Endocrinology & Diabetes and Department of Internal Medicine, University of Michigan, Ann Arbor, MI, 48105, United States
| | - Emily M Walker
- Division of Metabolism, Endocrinology & Diabetes and Department of Internal Medicine, University of Michigan, Ann Arbor, MI, 48105, United States
| | - Brett A Kaufman
- Vascular Medicine Institute, Division of Cardiology, Department of Medicine, University of Pittsburgh School of Medicine, Pittsburgh, PA, 15260, United States
| | - Scott A Soleimanpour
- Division of Metabolism, Endocrinology & Diabetes and Department of Internal Medicine, University of Michigan, Ann Arbor, MI, 48105, United States.
- Department of Molecular and Integrative Physiology, University of Michigan, Ann Arbor, MI, 48105, United States.
- VA Ann Arbor Healthcare System, Ann Arbor, MI, 48105, United States.
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Guo Z, Fan D, Liu FY, Ma SQ, An P, Yang D, Wang MY, Yang Z, Tang QZ. NEU1 Regulates Mitochondrial Energy Metabolism and Oxidative Stress Post-myocardial Infarction in Mice via the SIRT1/PGC-1 Alpha Axis. Front Cardiovasc Med 2022; 9:821317. [PMID: 35548408 PMCID: PMC9081506 DOI: 10.3389/fcvm.2022.821317] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2021] [Accepted: 03/22/2022] [Indexed: 12/11/2022] Open
Abstract
Objective Neuraminidase 1 (NEU1) participates in the response to multiple receptor signals and regulates various cellular metabolic behaviors. Importantly, it is closely related to the occurrence and progression of cardiovascular diseases. Because ischemic heart disease is often accompanied by impaired mitochondrial energy metabolism and oxidative stress. The purpose of this study was to investigate the functions and possible mechanisms of NEU1 in myocardial remodeling and mitochondrial metabolism induced by myocardial infarction (MI). Methods In this study, the MI-induced mouse mode, hypoxia-treated H9C2 cells model, and hypoxia-treated neonatal rat cardiomyocytes (NRCMs) model were constructed. Echocardiography and histological analysis were adopted to evaluate the morphology and function of the heart at the whole heart level. Western blot was adopted to determine the related expression level of signaling pathway proteins and mitochondria. Mitochondrial energy metabolism and oxidative stress were detected by various testing kits. Results Neuraminidase 1 was markedly upregulated in MI cardiac tissue. Cardiomyocyte-specific NEU1 deficiency restored cardiac function, cardiac hypertrophy, and myocardial interstitial fibrosis. What is more, cardiomyocyte-specific NEU1 deficiency inhibited mitochondrial dysfunction and oxidative stress induced by MI. Further experiments found that the sirtuin-1/peroxisome proliferator-activated receptor γ coactivator α (SIRT1/PGC-1α) protein level in MI myocardium was down-regulated, which was closely related to the above-mentioned mitochondrial changes. Cardiomyocyte-specific NEU1 deficiency increased the expression of SIRT1, PGC-1α, and mitochondrial transcription factor A (TFAM); which improved mitochondrial metabolism and oxidative stress. Inhibition of SIRT1 activity or PGC-1α activity eliminated the beneficial effects of cardiomyocyte-specific NEU1 deficiency. PGC-1α knockout mice experiments verified that NEU1 inhibition restored cardiac function induced by MI through SIRT1/PGC-1α signaling pathway. Conclusion Cardiomyocyte-specific NEU1 deficiency can alleviate MI-induced myocardial remodeling, oxidative stress, and mitochondrial energy metabolism disorder. In terms of mechanism, the specific deletion of NEU1 may play a role by enhancing the SIRT1/PGC-1α signaling pathway. Therefore, cardiomyocyte-specific NEU1 may provide an alternative treatment strategy for heart failure post-MI.
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Affiliation(s)
- Zhen Guo
- Department of Cardiology, Renmin Hospital of Wuhan University, Wuhan, China
- Hubei Key Laboratory of Metabolic and Chronic Diseases, Wuhan, China
| | - Di Fan
- Department of Cardiology, Renmin Hospital of Wuhan University, Wuhan, China
- Hubei Key Laboratory of Metabolic and Chronic Diseases, Wuhan, China
| | - Fang-Yuan Liu
- Department of Cardiology, Renmin Hospital of Wuhan University, Wuhan, China
- Hubei Key Laboratory of Metabolic and Chronic Diseases, Wuhan, China
| | - Shu-Qing Ma
- Department of Cardiology, Renmin Hospital of Wuhan University, Wuhan, China
- Hubei Key Laboratory of Metabolic and Chronic Diseases, Wuhan, China
| | - Peng An
- Department of Cardiology, Renmin Hospital of Wuhan University, Wuhan, China
- Hubei Key Laboratory of Metabolic and Chronic Diseases, Wuhan, China
| | - Dan Yang
- Department of Cardiology, Renmin Hospital of Wuhan University, Wuhan, China
- Hubei Key Laboratory of Metabolic and Chronic Diseases, Wuhan, China
| | - Min-Yu Wang
- Department of Cardiology, Renmin Hospital of Wuhan University, Wuhan, China
- Hubei Key Laboratory of Metabolic and Chronic Diseases, Wuhan, China
| | - Zheng Yang
- Department of Cardiology, Renmin Hospital of Wuhan University, Wuhan, China
- Hubei Key Laboratory of Metabolic and Chronic Diseases, Wuhan, China
| | - Qi-Zhu Tang
- Department of Cardiology, Renmin Hospital of Wuhan University, Wuhan, China
- Hubei Key Laboratory of Metabolic and Chronic Diseases, Wuhan, China
- *Correspondence: Qi-Zhu Tang
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Ni HY, Yu L, Zhao XL, Wang LT, Zhao CJ, Huang H, Zhu HL, Efferth T, Gu CB, Fu YJ. Seed oil of Rosa roxburghii Tratt against non-alcoholic fatty liver disease in vivo and in vitro through PPARα/PGC-1α-mediated mitochondrial oxidative metabolism. PHYTOMEDICINE : INTERNATIONAL JOURNAL OF PHYTOTHERAPY AND PHYTOPHARMACOLOGY 2022; 98:153919. [PMID: 35104757 DOI: 10.1016/j.phymed.2021.153919] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/06/2021] [Revised: 12/07/2021] [Accepted: 12/30/2021] [Indexed: 06/14/2023]
Abstract
BACKGROUND Non-alcoholic fatty liver disease (NAFLD), characterized by hepatic steatosis and hepatocyte injury, is an obesity-induced metabolic dysregulation with few available therapeutic options. Enhancement of the mitochondrial function was considered as an effective treatment for NALFD. Unsaturated fatty acids (UFAs) have been shown to have beneficial effects on metabolic syndrome disease such as hyperlipidemia, coronary artery disease and cardiovascular diseases. The seed oil of Rosa roxburghii Tratt (ORRT) was of high quality in terms of its high amount of unsaturated fatty acids. However, the effects of ORRT on NALFD have not been reported so far. PURPOSE The study aimed to evaluate the protective effects and molecular mechanism of ORRT for the treatment of NAFLD in vivo and in vitro. METHODS The beneficial effects, especially improving the mitochondrial function, and the potential mechanism of ORRT on NAFLD were studied both in vivo and in vitro. Lipid levels were determined by triglyceride (TG), total cholesterol (TC), and Oil Red O staining. Oxidative stress and inflammation were assessed by detecting antioxidant enzyme activity, MDA content, and ELISA assay. Blood TG, TC, HDL-c and LDL-c levels were measured in HFD mice. Western blot analyses were used to determine the levels of the protein involved in fatty acid oxidation, oxidative metabolism, and mitochondria biogenesis and function. The mitochondrial membrane potential level was measured by JC-1 staining to teste the effect of ORRT on mitochondrial function in vitro. GW6471 (inhibitor of PPARα) was used to confirm the relationship between PPARα and PGC-1α. RESULTS ORRT significantly restrained NAFLD progression by attenuating lipid accumulation, oxidative stress and inflammatory response. Furthermore, ORRT upregulated thermogenesis-related gene expressions, such as uncoupling protein 1 (UCP1) and p38 mitogen-activated protein kinase (p38 MAPK). The results showed that the expression of key genes involved in fatty acid oxidation (e.g., CPT-1α, ACADL, PPARα) and in mitochondrial biogenesis and function (e.g., TFAM, NRF1, PGC-1α, and COX IV) was significantly increased. Together with the observed MMP improvement, these findings suggested that ORRT activated the mitochondrial oxidative pathway. Additionally, GW6471 inhibited the ORRT on promoting the expression of PGC-1α, CPT-1α, and ACADL. In conclusion, ORRT possessed the potential to prevent lipid accumulation via the PPARα/PGC-1α signaling pathway, which could be developed as a natural health-promoting oil against NAFLD.
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Affiliation(s)
- Hai-Yan Ni
- College of Chemistry, Chemical Engineering and Resource Utilization, Northeast Forestry University, Harbin 150040, China; Key Laboratory of Forest Plant Ecology, Ministry of Education, Northeast Forestry University, Harbin 150040, China; Engineering Research Center of Forest Bio-Preparation, Ministry of Education, Northeast Forestry University, Harbin 150040, China
| | - Liang Yu
- College of Chemistry, Chemical Engineering and Resource Utilization, Northeast Forestry University, Harbin 150040, China; Key Laboratory of Forest Plant Ecology, Ministry of Education, Northeast Forestry University, Harbin 150040, China; Engineering Research Center of Forest Bio-Preparation, Ministry of Education, Northeast Forestry University, Harbin 150040, China
| | - Xue-Lian Zhao
- College of Chemistry, Chemical Engineering and Resource Utilization, Northeast Forestry University, Harbin 150040, China; Key Laboratory of Forest Plant Ecology, Ministry of Education, Northeast Forestry University, Harbin 150040, China; Engineering Research Center of Forest Bio-Preparation, Ministry of Education, Northeast Forestry University, Harbin 150040, China
| | - Li-Tao Wang
- College of Forestry, Beijing Forestry University, Beijing 100083, China
| | - Chun-Jian Zhao
- College of Chemistry, Chemical Engineering and Resource Utilization, Northeast Forestry University, Harbin 150040, China; Key Laboratory of Forest Plant Ecology, Ministry of Education, Northeast Forestry University, Harbin 150040, China; Engineering Research Center of Forest Bio-Preparation, Ministry of Education, Northeast Forestry University, Harbin 150040, China
| | - Han Huang
- College of Chemistry, Chemical Engineering and Resource Utilization, Northeast Forestry University, Harbin 150040, China; Key Laboratory of Forest Plant Ecology, Ministry of Education, Northeast Forestry University, Harbin 150040, China; Engineering Research Center of Forest Bio-Preparation, Ministry of Education, Northeast Forestry University, Harbin 150040, China
| | - Han-Lin Zhu
- College of Chemistry, Chemical Engineering and Resource Utilization, Northeast Forestry University, Harbin 150040, China; Key Laboratory of Forest Plant Ecology, Ministry of Education, Northeast Forestry University, Harbin 150040, China; Engineering Research Center of Forest Bio-Preparation, Ministry of Education, Northeast Forestry University, Harbin 150040, China
| | - Thomas Efferth
- Institute of Pharmaceutical and Biomedical Sciences, Johannes Gutenberg University, 55128 Mainz, Germany
| | - Cheng-Bo Gu
- College of Chemistry, Chemical Engineering and Resource Utilization, Northeast Forestry University, Harbin 150040, China; Key Laboratory of Forest Plant Ecology, Ministry of Education, Northeast Forestry University, Harbin 150040, China; Engineering Research Center of Forest Bio-Preparation, Ministry of Education, Northeast Forestry University, Harbin 150040, China.
| | - Yu-Jie Fu
- Key Laboratory of Forest Plant Ecology, Ministry of Education, Northeast Forestry University, Harbin 150040, China; Engineering Research Center of Forest Bio-Preparation, Ministry of Education, Northeast Forestry University, Harbin 150040, China; College of Forestry, Beijing Forestry University, Beijing 100083, China.
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Boukouris AE, Zhang Y, Saleme B, Kinnaird A, Zhao YY, Liu Y, Zervopoulos SD, Das SK, Mittal RD, Haromy A, Lorenzana-Carrillo MA, Krysler AR, Cromwell CR, Hubbard BP, Sutendra G, Michelakis ED. A reversible metabolic stress-sensitive regulation of CRMP2A orchestrates EMT/stemness and increases metastatic potential in cancer. Cell Rep 2022; 38:110511. [PMID: 35294884 DOI: 10.1016/j.celrep.2022.110511] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2021] [Revised: 11/09/2021] [Accepted: 02/17/2022] [Indexed: 12/31/2022] Open
Abstract
An epithelial-to-mesenchymal transition (EMT) phenotype with cancer stem cell-like properties is a critical feature of aggressive/metastatic tumors, but the mechanism(s) that promote it and its relation to metabolic stress remain unknown. Here we show that Collapsin Response Mediator Protein 2A (CRMP2A) is unexpectedly and reversibly induced in cancer cells in response to multiple metabolic stresses, including low glucose and hypoxia, and inhibits EMT/stemness. Loss of CRMP2A, when metabolic stress decreases (e.g., around blood vessels in vivo) or by gene deletion, induces extensive microtubule remodeling, increased glutamine utilization toward pyrimidine synthesis, and an EMT/stemness phenotype with increased migration, chemoresistance, tumor initiation capacity/growth, and metastatic potential. In a cohort of 27 prostate cancer patients with biopsies from primary tumors and distant metastases, CRMP2A expression decreases in the metastatic versus primary tumors. CRMP2A is an endogenous molecular brake on cancer EMT/stemness and its loss increases the aggressiveness and metastatic potential of tumors.
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Affiliation(s)
| | - Yongneng Zhang
- Department of Medicine, University of Alberta, Edmonton, AB, Canada
| | - Bruno Saleme
- Department of Medicine, University of Alberta, Edmonton, AB, Canada
| | - Adam Kinnaird
- Department of Surgery, University of Alberta, Edmonton, AB, Canada
| | - Yuan Yuan Zhao
- Department of Medicine, University of Alberta, Edmonton, AB, Canada
| | - Yongsheng Liu
- Department of Medicine, University of Alberta, Edmonton, AB, Canada
| | | | - Subhash K Das
- Department of Medicine, University of Alberta, Edmonton, AB, Canada
| | - Rohan D Mittal
- Department of Pathology, University of Alberta, Edmonton, AB, Canada
| | - Alois Haromy
- Department of Medicine, University of Alberta, Edmonton, AB, Canada
| | | | - Amanda R Krysler
- Department of Pharmacology, University of Alberta, Edmonton, AB, Canada
| | | | - Basil P Hubbard
- Department of Pharmacology, University of Alberta, Edmonton, AB, Canada
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Sherkhane B, Kalvala AK, Arruri VK, Khatri DK, Singh SB. Renoprotective potential of myo-inositol on diabetic kidney disease: Focus on the role of the PINK1/Parkin pathway and mitophagy receptors. J Biochem Mol Toxicol 2022; 36:e23032. [PMID: 35243728 DOI: 10.1002/jbt.23032] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2021] [Revised: 01/24/2022] [Accepted: 02/11/2022] [Indexed: 01/14/2023]
Abstract
Recent studies have emphasized the role of mitochondria in renal function as well as in renal injury. Poor mitochondrial quality control mechanisms including mitochondrial fusion, fission and mitophagy are major contributors for progression of diabetic renal injury. The current study is aimed to evaluate the protective role of myo-inositol (MI) against diabetic nephropathy (DN) by utilizing high glucose exposed NRK 52E cell and streptozotocin (STZ) induced DN model. MI supplementation (at doses 37.5 and 75 mg/kg) ameliorated albuminuria and enhanced the renal function as indicated significant improvement in urinary creatinine and urea levels. On the other hand, the western blot analysis of both in vitro and in vivo studies has revealed poor mitophagy in renal cells which was reversed upon myo-inositol treatment. Apart from targeting the canonical PINK1/Parkin pathway, we also focused on the role mitophagy receptors prohibitin (PHB) and NIP3-like protein (NIX). A significant reduction in expression of NIX and PHB2 was observed in renal tissue of diabetic control rats and high glucose exposed NRK 52E cells. Myo-inositol treatment resulted in positive modulation of PINK1/Parkin pathway as well as PHB2 and NIX. Myo-inositol also enhanced the mitochondrial biogenesis in renal tissue of diabetic rat by upregulating Nrf2/SIRT1/PGC-1α axis. The current study thus underlines the renoprotective effect myo-inositol, upregulation of mitophagy proteins and mitochondrial biogenesis upon myo-inositol treatment.
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Affiliation(s)
- Bhoomika Sherkhane
- Department of Pharmacology and Toxicology, National Institute of Pharmaceutical Education and Research (NIPER), Hyderabad, Telangana, India
| | - Anil Kumar Kalvala
- Department of Pharmacology and Toxicology, National Institute of Pharmaceutical Education and Research (NIPER), Hyderabad, Telangana, India
| | - Vijay Kumar Arruri
- Department of Pharmacology and Toxicology, National Institute of Pharmaceutical Education and Research (NIPER), Hyderabad, Telangana, India
| | - Dharmendra Kumar Khatri
- Department of Pharmacology and Toxicology, National Institute of Pharmaceutical Education and Research (NIPER), Hyderabad, Telangana, India
| | - Shashi Bala Singh
- Department of Pharmacology and Toxicology, National Institute of Pharmaceutical Education and Research (NIPER), Hyderabad, Telangana, India
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Koenig A, Buskiewicz-Koenig IA. Redox Activation of Mitochondrial DAMPs and the Metabolic Consequences for Development of Autoimmunity. Antioxid Redox Signal 2022; 36:441-461. [PMID: 35352943 PMCID: PMC8982130 DOI: 10.1089/ars.2021.0073] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Significance: Reactive oxygen species (ROS) are well known to promote innate immune responses during and in the absence of microbial infections. However, excessive or prolonged exposure to ROS provokes innate immune signaling dysfunction and contributes to the pathogenesis of many autoimmune diseases. The relatively high basal expression of pattern recognition receptors (PRRs) in innate immune cells renders them prone to activation in response to minor intrinsic or extrinsic ROS misbalances in the absence of pathogens. Critical Issues: A prominent source of ROS are mitochondria, which are also major inter-organelle hubs for innate immunity activation, since most PRRs and downstream receptor molecules are directly located either at mitochondria or at mitochondria-associated membranes. Due to their ancestral bacterial origin, mitochondria can also act as quasi-intrinsic self-microbes that mimic a pathogen invasion and become a source of danger-associated molecular patterns (DAMPs) that triggers innate immunity from within. Recent Advances: The release of mitochondrial DAMPs correlates with mitochondrial metabolism changes and increased generation of ROS, which can lead to the oxidative modification of DAMPs. Recent studies suggest that ROS-modified mitochondrial DAMPs possess increased, persistent immunogenicity. Future Directions: Herein, we discuss how mitochondrial DAMP release and oxidation activates PRRs, changes cellular metabolism, and causes innate immune response dysfunction by promoting systemic inflammation, thereby contributing to the onset or progression of autoimmune diseases. The future goal is to understand what the tipping point for DAMPs is to become oxidized, and whether this is a road without return. Antioxid. Redox Signal. 36, 441-461.
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Affiliation(s)
- Andreas Koenig
- Department of Microbiology and Immunology, SUNY Upstate Medical University, Syracuse, New York, USA
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Chen JW, Ma PW, Yuan H, Wang WL, Lu PH, Ding XR, Lun YQ, Yang Q, Lu LJ. mito-TEMPO Attenuates Oxidative Stress and Mitochondrial Dysfunction in Noise-Induced Hearing Loss via Maintaining TFAM-mtDNA Interaction and Mitochondrial Biogenesis. Front Cell Neurosci 2022; 16:803718. [PMID: 35210991 PMCID: PMC8861273 DOI: 10.3389/fncel.2022.803718] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2021] [Accepted: 01/14/2022] [Indexed: 12/25/2022] Open
Abstract
The excessive generation of reactive oxygen species (ROS) and mitochondrial damage have been widely reported in noise-induced hearing loss (NIHL). However, the specific mechanism of noise-induced mitochondrial damage remains largely unclear. In this study, we showed that acoustic trauma caused oxidative damage to mitochondrial DNA (mtDNA), leading to the reduction of mtDNA content, mitochondrial gene expression and ATP level in rat cochleae. The expression level and mtDNA-binding function of mitochondrial transcription factor A (TFAM) were impaired following acoustic trauma without affecting the upstream PGC-1α and NRF-1. The mitochondria-target antioxidant mito-TEMPO (MT) was demonstrated to enter the inner ear after the systemic administration. MT treatment significantly alleviated noise-induced auditory threshold shifts 3d and 14d after noise exposure. Furthermore, MT significantly reduced outer hair cell (OHC) loss, cochlear ribbon synapse loss, and auditory nerve fiber (ANF) degeneration after the noise exposure. In addition, we found that MT treatment effectively attenuated noise-induced cochlear oxidative stress and mtDNA damage, as indicated by DHE, 4-HNE, and 8-OHdG. MT treatment also improved mitochondrial biogenesis, ATP generation, and TFAM-mtDNA interaction in the cochlea. These findings suggest that MT has protective effects against NIHL via maintaining TFAM-mtDNA interaction and mitochondrial biogenesis based on its ROS scavenging capacity.
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Affiliation(s)
- Jia-Wei Chen
- Department of Otolaryngology Head and Neck Surgery, Tangdu Hospital, Fourth Military Medical University, Xi'an, China
| | - Peng-Wei Ma
- Department of Otolaryngology Head and Neck Surgery, Tangdu Hospital, Fourth Military Medical University, Xi'an, China
| | - Hao Yuan
- Department of Otolaryngology Head and Neck Surgery, Tangdu Hospital, Fourth Military Medical University, Xi'an, China
| | - Wei-Long Wang
- Department of Otolaryngology Head and Neck Surgery, Tangdu Hospital, Fourth Military Medical University, Xi'an, China
| | - Pei-Heng Lu
- Department of Otolaryngology Head and Neck Surgery, Tangdu Hospital, Fourth Military Medical University, Xi'an, China
| | - Xue-Rui Ding
- Department of Otolaryngology Head and Neck Surgery, Tangdu Hospital, Fourth Military Medical University, Xi'an, China
| | - Yu-Qiang Lun
- Department of Otolaryngology Head and Neck Surgery, Tangdu Hospital, Fourth Military Medical University, Xi'an, China
| | - Qian Yang
- Department of Experimental Surgery, Tangdu Hospital, Fourth Military Medical University, Xi'an, China
| | - Lian-Jun Lu
- Department of Otolaryngology Head and Neck Surgery, Tangdu Hospital, Fourth Military Medical University, Xi'an, China
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71
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Abstract
Mitochondria are dynamic organelles vital for energy production with now appreciated roles in immune defense. During microbial infection, mitochondria serve as signaling hubs to induce immune responses to counteract invading pathogens like viruses. Mitochondrial functions are central to a variety of antiviral responses including apoptosis and type I interferon signaling (IFN-I). While apoptosis and IFN-I mediated by mitochondrial antiviral signaling (MAVS) are well-established defenses, new dimensions of mitochondrial biology are emerging as battlefronts during viral infection. Increasingly, it has become apparent that mitochondria serve as reservoirs for distinct cues that trigger immune responses and that alterations in mitochondrial morphology may also tip infection outcomes. Furthermore, new data are foreshadowing pivotal roles for classic, homeostatic facets of this organelle as host-virus interfaces, namely, the tricarboxylic acid (TCA) cycle and electron transport chain (ETC) complexes like respiratory supercomplexes. Underscoring the importance of "housekeeping" mitochondrial activities in viral infection is the growing list of viral-encoded inhibitors including mimics derived from cellular genes that antagonize these functions. For example, virologs for ETC factors and several enzymes from the TCA cycle have been recently identified in DNA virus genomes and serve to pinpoint new vulnerabilities during infection. Here, we highlight recent advances for known antiviral functions associated with mitochondria as well as where the next battlegrounds may be based on viral effectors. Collectively, new methodology and mechanistic insights over the coming years will strengthen our understanding of how an ancient molecular truce continues to defend cells against viruses.
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Affiliation(s)
- Mahsa Sorouri
- Department of Immunology, University of Texas Southwestern Medical Center, Dallas, Texas, USA
| | - Tyron Chang
- Department of Immunology, University of Texas Southwestern Medical Center, Dallas, Texas, USA
- Genetics, Disease, and Development Graduate Program, University of Texas Southwestern Medical Center, Dallas, Texas, USA
| | - Dustin C Hancks
- Department of Immunology, University of Texas Southwestern Medical Center, Dallas, Texas, USA
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72
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Ye P, Li W, Huang X, Zhao S, Chen W, Xia Y, Yu W, Rao T, Ning J, Zhou X, Ruan Y, Cheng F. BMAL1 regulates mitochondrial homeostasis in renal ischaemia-reperfusion injury by mediating the SIRT1/PGC-1α axis. J Cell Mol Med 2022; 26:1994-2009. [PMID: 35174626 PMCID: PMC8980910 DOI: 10.1111/jcmm.17223] [Citation(s) in RCA: 24] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2021] [Revised: 01/18/2022] [Accepted: 01/21/2022] [Indexed: 01/26/2023] Open
Abstract
The regulation of renal function by circadian gene BMAL1 has been recently recognized; however, the role and mechanism of BMAL1 in renal ischaemia‐reperfusion injury (IRI) are still unknown. The purpose of this study was to clarify the pathophysiological role of BMAL1 in renal IRI. We measured the levels of BMAL1 and mitochondrial biogenesis‐related proteins, including SIRT1, PGC‐1α, NRF1 and TFAM, in rats with renal IRI. In rats, the level of BMAL1 decreased significantly, resulting in inhibition of SIRT1 expression and mitochondrial biogenesis. In addition, under hypoxia and reoxygenation (H/R) stimulation, BMAL1 knockdown decreased the level of SIRT1 and exacerbated the degree of mitochondrial damage and apoptosis. Overexpression of BMAL1 alleviated H/R‐induced injury. Furthermore, application of the SIRT1 inhibitor EX527 not only reduced the activities of SIRT1 and PGC‐1α but also further aggravated mitochondrial dysfunction and partially reversed the protective effect of BMAL1 overexpression. Moreover, whether in vivo or in vitro, the application of SIRT1 agonist resveratrol rescued the mitochondrial dysfunction caused by H/R or IRI by activating mitochondrial biogenesis. These results indicate that BMAL1 is a key circadian gene that mediates mitochondrial homeostasis in renal IRI through the SIRT1/PGC‐1α axis, which provides a new direction for targeted therapy for renal IRI.
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Affiliation(s)
- Peng Ye
- Department of Urology, Renmin Hospital of Wuhan University, Wuhan, China
| | - Wei Li
- Department of Anesthesiology, Renmin Hospital of Wuhan University, Wuhan, China
| | - Xin Huang
- Department of Urology, Renmin Hospital of Wuhan University, Wuhan, China
| | - Sheng Zhao
- Department of Urology, Renmin Hospital of Wuhan University, Wuhan, China
| | - Wu Chen
- Department of Urology, Renmin Hospital of Wuhan University, Wuhan, China
| | - Yuqi Xia
- Department of Urology, Renmin Hospital of Wuhan University, Wuhan, China
| | - Weimin Yu
- Department of Urology, Renmin Hospital of Wuhan University, Wuhan, China
| | - Ting Rao
- Department of Urology, Renmin Hospital of Wuhan University, Wuhan, China
| | - Jinzhuo Ning
- Department of Urology, Renmin Hospital of Wuhan University, Wuhan, China
| | - Xiangjun Zhou
- Department of Urology, Renmin Hospital of Wuhan University, Wuhan, China
| | - Yuan Ruan
- Department of Urology, Renmin Hospital of Wuhan University, Wuhan, China
| | - Fan Cheng
- Department of Urology, Renmin Hospital of Wuhan University, Wuhan, China
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73
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Yoshinaga N, Numata K. Rational Designs at the Forefront of Mitochondria-Targeted Gene Delivery: Recent Progress and Future Perspectives. ACS Biomater Sci Eng 2022; 8:348-359. [PMID: 34979085 DOI: 10.1021/acsbiomaterials.1c01114] [Citation(s) in RCA: 20] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Mitochondria play an essential role in cellular metabolism and generate energy in cells. To support these functions, several proteins are encoded in the mitochondrial DNA (mtDNA). The mutation of mtDNA causes mitochondrial dysfunction and ultimately results in a variety of inherited diseases. To date, gene delivery systems targeting mitochondria have been developed to ameliorate mtDNA mutations. However, applications of these strategies in mitochondrial gene therapy are still being explored and optimized. Thus, from this perspective, we herein highlight recent mitochondria-targeting strategies for gene therapy and discuss future directions for effective mitochondria-targeted gene delivery.
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Affiliation(s)
- Naoto Yoshinaga
- Biomacromolecule Research Team, RIKEN Center for Sustainable Resource Science, Saitama 351-0198, Japan
| | - Keiji Numata
- Biomacromolecule Research Team, RIKEN Center for Sustainable Resource Science, Saitama 351-0198, Japan.,Department of Material Chemistry, Kyoto University, Kyoto 606-8501, Japan
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74
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Li X, Zhang Q, Wang Z, Zhuang Q, Zhao M. Immune and Metabolic Alterations in Liver Fibrosis: A Disruption of Oxygen Homeostasis? Front Mol Biosci 2022; 8:802251. [PMID: 35187072 PMCID: PMC8850363 DOI: 10.3389/fmolb.2021.802251] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2021] [Accepted: 12/17/2021] [Indexed: 12/06/2022] Open
Abstract
According to the WHO, “cirrhosis of the liver” was the 11th leading cause of death globally in 2019. Many kinds of liver diseases can develop into liver cirrhosis, and liver fibrosis is the main pathological presentation of different aetiologies, including toxic damage, viral infection, and metabolic and genetic diseases. It is characterized by excessive synthesis and decreased decomposition of extracellular matrix (ECM). Hepatocyte cell death, hepatic stellate cell (HSC) activation, and inflammation are crucial incidences of liver fibrosis. The process of fibrosis is also closely related to metabolic and immune disorders, which are usually induced by the destruction of oxygen homeostasis, including mitochondrial dysfunction, oxidative stress, and hypoxia pathway activation. Mitochondria are important organelles in energy generation and metabolism. Hypoxia-inducible factors (HIFs) are key factors activated when hypoxia occurs. Both are considered essential factors of liver fibrosis. In this review, the authors highlight the impact of oxygen imbalance on metabolism and immunity in liver fibrosis as well as potential novel targets for antifibrotic therapies.
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Affiliation(s)
- Xinyu Li
- Department of Pediatrics, The Third Xiangya Hospital, Central South University, Changsha, China
- Xiangya School of Medicine, Central South University, Changsha, China
| | - Quyan Zhang
- Department of Pediatrics, The Third Xiangya Hospital, Central South University, Changsha, China
- Xiangya School of Medicine, Central South University, Changsha, China
| | - Zeyu Wang
- Xiangya School of Medicine, Central South University, Changsha, China
| | - Quan Zhuang
- Transplantation Center, The Third Xiangya Hospital, Central South University, Changsha, China
- *Correspondence: Quan Zhuang, ; Mingyi Zhao,
| | - Mingyi Zhao
- Department of Pediatrics, The Third Xiangya Hospital, Central South University, Changsha, China
- *Correspondence: Quan Zhuang, ; Mingyi Zhao,
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75
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Reddy SS, Addi UR, Pullakhandam R, Reddy GB. Dietary Zinc deficiency disrupts skeletal muscle proteostasis and mitochondrial biology in rats. Nutrition 2022; 98:111625. [DOI: 10.1016/j.nut.2022.111625] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2021] [Revised: 12/30/2021] [Accepted: 01/27/2022] [Indexed: 10/19/2022]
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76
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Nusier M, Shah AK, Dhalla NS. Structure-Function Relationships and Modifications of Cardiac Sarcoplasmic Reticulum Ca2+-Transport. Physiol Res 2022; 70:S443-S470. [DOI: 10.33549/physiolres.934805] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
Abstract
Sarcoplasmic reticulum (SR) is a specialized tubular network, which not only maintains the intracellular concentration of Ca2+ at a low level but is also known to release and accumulate Ca2+ for the occurrence of cardiac contraction and relaxation, respectively. This subcellular organelle is composed of several phospholipids and different Ca2+-cycling, Ca2+-binding and regulatory proteins, which work in a coordinated manner to determine its function in cardiomyocytes. Some of the major proteins in the cardiac SR membrane include Ca2+-pump ATPase (SERCA2), Ca2+-release protein (ryanodine receptor), calsequestrin (Ca2+-binding protein) and phospholamban (regulatory protein). The phosphorylation of SR Ca2+-cycling proteins by protein kinase A or Ca2+-calmodulin kinase (directly or indirectly) has been demonstrated to augment SR Ca2+-release and Ca2+-uptake activities and promote cardiac contraction and relaxation functions. The activation of phospholipases and proteases as well as changes in different gene expressions under different pathological conditions have been shown to alter the SR composition and produce Ca2+-handling abnormalities in cardiomyocytes for the development of cardiac dysfunction. The post-translational modifications of SR Ca2+ cycling proteins by processes such as oxidation, nitrosylation, glycosylation, lipidation, acetylation, sumoylation, and O GlcNacylation have also been reported to affect the SR Ca2+ release and uptake activities as well as cardiac contractile activity. The SR function in the heart is also influenced in association with changes in cardiac performance by several hormones including thyroid hormones and adiponectin as well as by exercise-training. On the basis of such observations, it is suggested that both Ca2+-cycling and regulatory proteins in the SR membranes are intimately involved in determining the status of cardiac function and are thus excellent targets for drug development for the treatment of heart disease.
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Affiliation(s)
| | | | - NS Dhalla
- Institute of Cardiovascular Sciences, St. Boniface Hospital Albrechtsen, Research Centre, 351 Tache Avenue, Winnipeg, MB, R2H 2A6 Canada.
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77
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Cadmium and Cadmium/BDE (47 or 209) Exposure Affect Mitochondrial Function, DNA Damage/Repair Mechanisms and Barrier Integrity in Airway Epithelial Cells. ATMOSPHERE 2022. [DOI: 10.3390/atmos13020201] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Heavy metals and Brominated diphenyl ether flame-retardants (BDEs) often coexist in the environment and are capable of inducing injury, cytotoxicity or genotoxicity in human epithelial cells of the lung. We studied the effects of single Cadmium chloride (CdCl2) or CdCl2/BDE (47 or 209) mixtures in airway epithelial cells, using A549 cell line cultured at submerged conditions and air–liquid interface (ALI) (an in vitro model described as physiologically relevant in vivo-like). We evaluated cell viability, oxidative stress, apoptosis, DNA damage/repair (Comet assay, γH2AX phosphorylation ser139), mitochondrial redox balance (NOX-4, Nrf2 and TFAM) and cell barrier integrity (TEER, ZO-1, Claudin-1, E-cadherin-1) in A549 cells exposed to CdCl2 (1 nM to 10 µM), or to CdCl2 (100 nM)/BDEs (47 or 209) (100 nM). CdCl2 (10 μM) reduced cell viability and increased apoptosis. CdCl2 (100 nM) significantly affected DNA-damage/repair (Olive Tail length production), γH2AX phosphorylation and oxidative stress (ROS/JC-1 production) in submerged cell cultures. CdCl2 (100 nM) decreased viability, TEER, ZO-1, Claudin-1 and E-cadherin-1 mRNA expression, and Nrf2 and TFAM while increased NOX-4, in ALI culture of cells. In both cell culture approaches, the cells stimulated with Cadmium/BDEs mixtures did not show a significant increase in the effects observed in the cells treated with CdCl2 alone. CdCl2 inhalation might exert cytotoxicity and genotoxicity, playing a pivotal role in the uncontrolled oxidative stress, damaging DNA and gene expression in airway epithelial cells. No additional or synergistic adverse effects of CdCl2/BDEs mixture were observed in comparison to CdCl2 alone in lung epithelium.
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78
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Liu X, Li D, Liu Z, Song Y, Zhang B, Zang Y, Zhang W, Niu Y, Shen C. Nicotinamide mononucleotide promotes pancreatic islet function through the SIRT1 pathway in mice after severe burns. Burns 2022; 48:1922-1932. [DOI: 10.1016/j.burns.2022.01.013] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2021] [Revised: 01/10/2022] [Accepted: 01/18/2022] [Indexed: 01/03/2023]
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79
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Sourty B, Dardaud LM, Bris C, Desquiret-Dumas V, Boisselier B, Basset L, Figarella-Branger D, Morel A, Sanson M, Procaccio V, Rousseau A. Mitochondrial DNA copy number as a prognostic marker is age-dependent in adult glioblastoma. Neurooncol Adv 2022; 4:vdab191. [PMID: 35118384 PMCID: PMC8807107 DOI: 10.1093/noajnl/vdab191] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
BACKGROUND Glioblastoma (GBM) is the most common and aggressive form of glioma. GBM frequently displays chromosome (chr) 7 gain, chr 10 loss and/or EGFR amplification (chr7+/chr10-/EGFRamp). Overall survival (OS) is 15 months after treatment. In young adults, IDH1/2 mutations are associated with longer survival. In children, histone H3 mutations portend a dismal prognosis. Novel reliable prognostic markers are needed in GBM. We assessed the prognostic value of mitochondrial DNA (mtDNA) copy number in adult GBM. METHODS mtDNA copy number was assessed using real-time quantitative PCR in 232 primary GBM. Methylation of POLG and TFAM genes, involved in mtDNA replication, was assessed by bisulfite-pyrosequencing in 44 and 51 cases, respectively. RESULTS Median age at diagnosis was 56.6 years-old and median OS, 13.3 months. 153/232 GBM (66 %) displayed chr7+/chr10-/EGFRamp, 23 (9.9 %) IDH1/2 mutation, 3 (1.3 %) H3 mutation and 53 (22.8 %) no key genetic alterations. GBM were divided into two groups, "Low" (n = 116) and "High" (n = 116), according to the median mtDNA/nuclear DNA ratio (237.7). There was no significant difference in OS between the two groups. By dividing the whole cohort according to the median age at diagnosis, OS was longer in the "High" vs "Low" subgroup (27.3 vs 15 months, P = .0203) in young adult GBM (n = 117) and longer in the "Low" vs "High" subgroup (14.5 vs 10.2 months, P = .0116) in older adult GBM (n = 115). POLG was highly methylated, whereas TFAM remained unmethylated. CONCLUSION mtDNA copy number may be a novel prognostic biomarker in GBM, its impact depending on age.
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Affiliation(s)
- Baptiste Sourty
- Department of Pathology, University Hospital of Angers, Angers, France
| | | | - Céline Bris
- Department of Genetics, University Hospital of Angers and Angers University, INSERM1083, CNRS6015, MITOVASC, Angers, France
| | - Valérie Desquiret-Dumas
- Department of Genetics, University Hospital of Angers and Angers University, INSERM1083, CNRS6015, MITOVASC, Angers, France
| | - Blandine Boisselier
- Department of Pathology, University Hospital of Angers, Angers, France
- Center for Research in Cancerology and Immunology Nantes/Angers, INSERM, University of Nantes, University of Angers, Angers, France
| | - Laëtitia Basset
- Department of Pathology, University Hospital of Angers, Angers, France
- Center for Research in Cancerology and Immunology Nantes/Angers, INSERM, University of Nantes, University of Angers, Angers, France
| | - Dominique Figarella-Branger
- Aix-Marseille Univ, APHM, CNRS, INP, Inst Neurophysiopathol, CHU Timone, Service d'Anatomie Pathologique et de Neuropathologie, Marseille, France
| | - Alain Morel
- Institut de Cancérologie de l'Ouest - Paul Papin, Angers, France
| | - Marc Sanson
- Sorbonne University UPMC Univ Paris 06, INSERM CNRS, U1127, UMR 7225, ICM, F-75013, Groupe Hospitalier Pitié-Salpêtrière, Neurology Department 2, Paris, France
| | - Vincent Procaccio
- Department of Genetics, University Hospital of Angers and Angers University, INSERM1083, CNRS6015, MITOVASC, Angers, France
| | - Audrey Rousseau
- Department of Pathology, University Hospital of Angers, Angers, France
- Center for Research in Cancerology and Immunology Nantes/Angers, INSERM, University of Nantes, University of Angers, Angers, France
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80
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de Oliveira VC, Santos Roballo KC, Mariano Junior CG, Santos SIP, Bressan FF, Chiaratti MR, Tucker EJ, Davis EE, Concordet JP, Ambrósio CE. HEK293T Cells with TFAM Disruption by CRISPR-Cas9 as a Model for Mitochondrial Regulation. Life (Basel) 2021; 12:22. [PMID: 35054416 PMCID: PMC8779421 DOI: 10.3390/life12010022] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2021] [Revised: 11/30/2021] [Accepted: 12/10/2021] [Indexed: 12/17/2022] Open
Abstract
The mitochondrial transcription factor A (TFAM) is considered a key factor in mitochondrial DNA (mtDNA) copy number. Given that the regulation of active copies of mtDNA is still not fully understood, we investigated the effects of CRISPR-Cas9 gene editing of TFAM in human embryonic kidney (HEK) 293T cells on mtDNA copy number. The aim of this study was to generate a new in vitro model by CRISPR-Cas9 system by editing the TFAM locus in HEK293T cells. Among the resulting single-cell clones, seven had high mutation rates (67-96%) and showed a decrease in mtDNA copy number compared to control. Cell staining with Mitotracker Red showed a reduction in fluorescence in the edited cells compared to the non-edited cells. Our findings suggest that the mtDNA copy number is directly related to TFAM control and its disruption results in interference with mitochondrial stability and maintenance.
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Affiliation(s)
- Vanessa Cristina de Oliveira
- Department of Veterinary Medicine, Faculty of Animal Science and Food Engineering, University of São Paulo, São Paulo 13635-900, Brazil; (K.C.S.R.); (C.G.M.J.); (S.I.P.S.); (F.F.B.); (C.E.A.)
| | - Kelly Cristine Santos Roballo
- Department of Veterinary Medicine, Faculty of Animal Science and Food Engineering, University of São Paulo, São Paulo 13635-900, Brazil; (K.C.S.R.); (C.G.M.J.); (S.I.P.S.); (F.F.B.); (C.E.A.)
- Edward Via College of Osteopathic Medicine, Blacksburg, VA 24060, USA
- Department of Biomedical Science and Pathology, Virginia-Maryland College of Veterinary Medicine, Virginia Tech, Blacksburg, VA 24060, USA
| | - Clésio Gomes Mariano Junior
- Department of Veterinary Medicine, Faculty of Animal Science and Food Engineering, University of São Paulo, São Paulo 13635-900, Brazil; (K.C.S.R.); (C.G.M.J.); (S.I.P.S.); (F.F.B.); (C.E.A.)
| | - Sarah Ingrid Pinto Santos
- Department of Veterinary Medicine, Faculty of Animal Science and Food Engineering, University of São Paulo, São Paulo 13635-900, Brazil; (K.C.S.R.); (C.G.M.J.); (S.I.P.S.); (F.F.B.); (C.E.A.)
| | - Fabiana Fernandes Bressan
- Department of Veterinary Medicine, Faculty of Animal Science and Food Engineering, University of São Paulo, São Paulo 13635-900, Brazil; (K.C.S.R.); (C.G.M.J.); (S.I.P.S.); (F.F.B.); (C.E.A.)
| | - Marcos Roberto Chiaratti
- Department of Genetics and Evolution, Federal University of São Carlos, São Carlos 13565-905, Brazil;
| | - Elena J. Tucker
- Murdoch Children’s Research Institute, Royal Children’s Hospital, Melbourne 3052, Australia;
- Department of Paediatrics, University of Melbourne, Melbourne 3010, Australia
| | - Erica E. Davis
- Stanley Manne Children’s Research Institute, Ann & Robert H. Lurie Children’s Hospital of Chicago, Chicago, IL 60611, USA;
- Department of Pediatrics, Feinberg School of Medicine, Northwestern University, Chicago, IL 1900, USA
- Department of Cell and Developmental Biology, Feinberg School of Medicine, Northwestern University, Chicago, IL 1900, USA
| | - Jean-Paul Concordet
- Laboratoire Structure et Instabilité des Génomes, Museum National d’Histoire Naturelle, INSERM U1154, CNRS UMR7196, 75231 Paris, France;
| | - Carlos Eduardo Ambrósio
- Department of Veterinary Medicine, Faculty of Animal Science and Food Engineering, University of São Paulo, São Paulo 13635-900, Brazil; (K.C.S.R.); (C.G.M.J.); (S.I.P.S.); (F.F.B.); (C.E.A.)
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Horibe S, Ishikawa K, Nakada K, Wake M, Takeda N, Tanaka T, Kawauchi S, Sasaki N, Rikitake Y. Mitochondrial DNA mutations are involved in the acquisition of cisplatin resistance in human lung cancer A549 cells. Oncol Rep 2021; 47:32. [PMID: 34935060 PMCID: PMC8717125 DOI: 10.3892/or.2021.8243] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2021] [Accepted: 11/17/2021] [Indexed: 11/21/2022] Open
Abstract
The efficacy of cisplatin (CDDP) has been demonstrated in the treatment of various cancers as monotherapy and combination therapy with immunotherapy. However, acquired CDDP resistance is a major obstacle to successful treatment. In the present study, the mechanisms underlying acquired CDDP resistance were examined using ACR20 cells, which are CDDP-resistant cells derived from A549 lung cancer cells. CDDP induces cytotoxicity by binding nuclear DNA and generating reactive oxygen species (ROS). Contrary to our expectation, ROS levels were elevated in ACR20 cells not treated with CDDP. Pretreatment with an ROS inhibitor enhanced the sensitivity of ACR20 cells to CDDP and prevented the activation of nuclear factor (NF)-кB signaling and upregulation of inhibitor of apoptosis proteins (IAPs). Notably, evaluation of the mitochondrial oxygen consumption rate and mitochondrial superoxide levels revealed a deterioration of mitochondrial function in ACR20 cells. Mitochondrial DNA PCR-RFLP analysis revealed four mutations with varying percentage levels in ACR20 cells. In addition, in cytoplasmic hybrids with mitochondria from ACR20 cells, intrinsic ROS levels were elevated, expression of IAPs was increased, and complex I activity and sensitivity to CDDP were decreased. Analysis of three-dimensional structure data indicated that a mutation (ND2 F40L) may impact the proton translocation pathway, thereby affecting mitochondrial complex I activity. Together, these findings suggest that intrinsic ROS levels were elevated by mitochondrial DNA mutations, which decreased the sensitivity to CDDP via activation of NF-κB signaling and induction of IAP expression in ACR20 cells. These findings indicate that newly identified mutations in mitochondrial DNA may lead to acquired cisplatin resistance in cancer.
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Affiliation(s)
- Sayo Horibe
- Laboratory of Medical Pharmaceutics, Kobe Pharmaceutical University, Higashinada‑ku, Kobe, Hyogo 658‑8558, Japan
| | - Kaori Ishikawa
- Faculty of Life and Environmental Sciences, University of Tsukuba, Tennodai, Tsukuba, Ibaraki 305‑8572, Japan
| | - Kazuto Nakada
- Faculty of Life and Environmental Sciences, University of Tsukuba, Tennodai, Tsukuba, Ibaraki 305‑8572, Japan
| | - Masaki Wake
- Division of Cardiology and Metabolism, Center for Molecular Medicine, Jichi Medical University, Yakushiji, Shimotsuke‑shi, Tochigi 329‑0498, Japan
| | - Norihiko Takeda
- Division of Cardiology and Metabolism, Center for Molecular Medicine, Jichi Medical University, Yakushiji, Shimotsuke‑shi, Tochigi 329‑0498, Japan
| | - Toru Tanaka
- Laboratory of Medical Pharmaceutics, Kobe Pharmaceutical University, Higashinada‑ku, Kobe, Hyogo 658‑8558, Japan
| | - Shoji Kawauchi
- Comprehensive Education and Research Center, Kobe Pharmaceutical University, Higashinada‑ku, Kobe, Hyogo 658‑8558, Japan
| | - Naoto Sasaki
- Laboratory of Medical Pharmaceutics, Kobe Pharmaceutical University, Higashinada‑ku, Kobe, Hyogo 658‑8558, Japan
| | - Yoshiyuki Rikitake
- Laboratory of Medical Pharmaceutics, Kobe Pharmaceutical University, Higashinada‑ku, Kobe, Hyogo 658‑8558, Japan
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Choi WS, Garcia-Diaz M. A minimal motif for sequence recognition by mitochondrial transcription factor A (TFAM). Nucleic Acids Res 2021; 50:322-332. [PMID: 34928349 PMCID: PMC8754647 DOI: 10.1093/nar/gkab1230] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2021] [Revised: 11/13/2021] [Accepted: 12/10/2021] [Indexed: 11/16/2022] Open
Abstract
Mitochondrial transcription factor A (TFAM) plays a critical role in mitochondrial transcription initiation and mitochondrial DNA (mtDNA) packaging. Both functions require DNA binding, but in one case TFAM must recognize a specific promoter sequence, while packaging requires coating of mtDNA by association with non sequence-specific regions. The mechanisms by which TFAM achieves both sequence-specific and non sequence-specific recognition have not yet been determined. Existing crystal structures of TFAM bound to DNA allowed us to identify two guanine-specific interactions that are established between TFAM and the bound DNA. These interactions are observed when TFAM is bound to both specific promoter sequences and non-sequence specific DNA. These interactions are established with two guanine bases separated by 10 random nucleotides (GN10G). Our biochemical results demonstrate that the GN10G consensus is essential for transcriptional initiation and contributes to facilitating TFAM binding to DNA substrates. Furthermore, we report a crystal structure of TFAM in complex with a non sequence-specific sequence containing a GN10G consensus. The structure reveals a unique arrangement in which TFAM bridges two DNA substrates while maintaining the GN10G interactions. We propose that the GN10G consensus is key to facilitate the interaction of TFAM with DNA.
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Affiliation(s)
- Woo Suk Choi
- Department of Pharmacological Sciences, Stony Brook University, Stony Brook, NY 11794, USA
| | - Miguel Garcia-Diaz
- Department of Pharmacological Sciences, Stony Brook University, Stony Brook, NY 11794, USA
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Nomiyama T, Setoyama D, Yasukawa T, Kang D. Mitochondria Metabolomics Reveals a Role of β-Nicotinamide Mononucleotide Metabolism in Mitochondrial DNA Replication. J Biochem 2021; 171:325-338. [PMID: 34865026 DOI: 10.1093/jb/mvab136] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2021] [Accepted: 11/30/2021] [Indexed: 11/14/2022] Open
Abstract
Mitochondrial DNA (mtDNA) replication is tightly regulated and necessary for cellular homeostasis; however, its relationship with mitochondrial metabolism remains unclear. Advances in metabolomics integrated with the rapid isolation of mitochondria will allow for remarkable progress in analyzing mitochondrial metabolism. Here, we propose a novel methodology for mitochondria-targeted metabolomics, which employs a quick isolation procedure using a hemolytic toxin from Streptococcus pyogenes streptolysin O (SLO). SLO-isolation of mitochondria from cultured HEK293 cells is time- and labor-saving for simultaneous multi-sample processing and has been applied to various other cell lines in this study. Furthermore, our method can detect the time-dependent reduction in mitochondrial ATP in response to a glycolytic inhibitor 2-deoxyglucose, indicating the suitability to prepare metabolite analysis-competent mitochondria. Using this methodology, we searched for specific mitochondrial metabolites associated with mtDNA replication activation, and nucleotides and NAD+ were identified to be prominently altered. Most notably, treatment of β-Nicotinamide Mononucleotide (β-NMN), a precursor of NAD+, to HEK293 cells activated and improved the rate of mtDNA replication by increasing nucleotides in mitochondria and decreasing their degradation products: nucleosides. Our results suggest that β-NMN metabolism play a role in supporting mtDNA replication by maintaining the nucleotide pool balance in the mitochondria.
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Affiliation(s)
- Tomoko Nomiyama
- Department of Clinical Chemistry and Laboratory Medicine, Graduate School of Medical Sciences, Kyushu University, 3-1-1 Maidashi, Fukuoka, Japan.,Department of Clinical Chemistry and Laboratory Medicine, Kyushu University Hospital, 3-1-1 Maidashi, Fukuoka, Japan
| | - Daiki Setoyama
- Department of Clinical Chemistry and Laboratory Medicine, Graduate School of Medical Sciences, Kyushu University, 3-1-1 Maidashi, Fukuoka, Japan.,Department of Clinical Chemistry and Laboratory Medicine, Kyushu University Hospital, 3-1-1 Maidashi, Fukuoka, Japan
| | - Takehiro Yasukawa
- Department of Pathology and Oncology, Juntendo University School of Medicine, 2-1-1 Hongo, Tokyo, Japan
| | - Dongchon Kang
- Department of Clinical Chemistry and Laboratory Medicine, Graduate School of Medical Sciences, Kyushu University, 3-1-1 Maidashi, Fukuoka, Japan.,Department of Clinical Chemistry and Laboratory Medicine, Kyushu University Hospital, 3-1-1 Maidashi, Fukuoka, Japan
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84
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Abstract
Sodium glucose cotransporter 2 (SGLT-2) inhibitors are the latest class of antidiabetic medications. They prevent glucose reabsorption in the proximal convoluted tubule to decrease blood sugar. Several animal studies revealed that SGLT-2 is profoundly involved in the inflammatory response, fibrogenesis, and regulation of numerous intracellular signaling pathways. Likewise, SGLT-2 inhibitors markedly attenuated inflammation and fibrogenesis and improved the function of damaged organ in animal studies, observational studies, and clinical trials. SGLT-2 inhibitors can decrease blood pressure and ameliorate hypertriglyceridemia and obesity. Likewise, they improve the outcome of cardiovascular diseases such as heart failure, arrhythmias, and ischemic heart disease. SGLT-2 inhibitors are associated with lower cardiovascular and all-cause mortality as well. Meanwhile, they protect against nonalcoholic fatty liver disease (NAFLD), chronic kidney disease, acute kidney injury, and improve micro- and macroalbuminuria. SGLT-2 inhibitors can reprogram numerous signaling pathways to improve NAFLD, cardiovascular diseases, and renal diseases. For instance, they enhance lipolysis, ketogenesis, mitochondrial biogenesis, and autophagy while they attenuate the renin-angiotensin-aldosterone system, lipogenesis, endoplasmic reticulum stress, oxidative stress, apoptosis, and fibrogenesis. This review explains the beneficial effects of SGLT-2 inhibitors on NAFLD and cardiovascular and renal diseases and dissects the underlying molecular mechanisms in detail. This narrative review explains the beneficial effects of SGLT-2 inhibitors on NAFLD and cardiovascular and renal diseases using the results of latest observational studies, clinical trials, and meta-analyses. Thereafter, it dissects the underlying molecular mechanisms involved in the clinical effects of SGLT-2 inhibitors on these diseases.
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Affiliation(s)
- Moein Ala
- School of Medicine, Tehran University of Medical Sciences (TUMS), Tehran, Iran
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85
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Vargas-Mendoza N, Angeles-Valencia M, Morales-González Á, Madrigal-Santillán EO, Morales-Martínez M, Madrigal-Bujaidar E, Álvarez-González I, Gutiérrez-Salinas J, Esquivel-Chirino C, Chamorro-Cevallos G, Cristóbal-Luna JM, Morales-González JA. Oxidative Stress, Mitochondrial Function and Adaptation to Exercise: New Perspectives in Nutrition. Life (Basel) 2021; 11:life11111269. [PMID: 34833151 PMCID: PMC8624755 DOI: 10.3390/life11111269] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2021] [Revised: 11/10/2021] [Accepted: 11/13/2021] [Indexed: 02/07/2023] Open
Abstract
Cells have the ability to adapt to stressful environments as a part of their evolution. Physical exercise induces an increase of a demand for energy that must be met by mitochondria as the main (ATP) provider. However, this process leads to the increase of free radicals and the so-called reactive oxygen species (ROS), which are necessary for the maintenance of cell signaling and homeostasis. In addition, mitochondrial biogenesis is influenced by exercise in continuous crosstalk between the mitochondria and the nuclear genome. Excessive workloads may induce severe mitochondrial stress, resulting in oxidative damage. In this regard, the objective of this work was to provide a general overview of the molecular mechanisms involved in mitochondrial adaptation during exercise and to understand if some nutrients such as antioxidants may be implicated in blunt adaptation and/or an impact on the performance of exercise by different means.
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Affiliation(s)
- Nancy Vargas-Mendoza
- Laboratorio de Medicina de Conservación, Escuela Superior de Medicina, Instituto Politécnico Nacional, Plan de San Luis y Díaz Mirón, Col. Casco de Santo Tomás, Del. Miguel Hidalgo, Ciudad de México 11340, Mexico; (N.V.-M.); (M.A.-V.); (E.O.M.-S.)
| | - Marcelo Angeles-Valencia
- Laboratorio de Medicina de Conservación, Escuela Superior de Medicina, Instituto Politécnico Nacional, Plan de San Luis y Díaz Mirón, Col. Casco de Santo Tomás, Del. Miguel Hidalgo, Ciudad de México 11340, Mexico; (N.V.-M.); (M.A.-V.); (E.O.M.-S.)
| | - Ángel Morales-González
- Escuela Superior de Cómputo, Instituto Politécnico Nacional, Av. Juan de Dios Bátiz s/n Esquina Miguel Othón de Mendizabal, Unidad Profesional Adolfo López Mateos, Ciudad de México 07738, Mexico
- Correspondence: (Á.M.-G.); (J.A.M.-G.); Tel.: +52-55-5729-6300 (Á.M.-G. & J.A.M.-G.)
| | - Eduardo Osiris Madrigal-Santillán
- Laboratorio de Medicina de Conservación, Escuela Superior de Medicina, Instituto Politécnico Nacional, Plan de San Luis y Díaz Mirón, Col. Casco de Santo Tomás, Del. Miguel Hidalgo, Ciudad de México 11340, Mexico; (N.V.-M.); (M.A.-V.); (E.O.M.-S.)
| | - Mauricio Morales-Martínez
- Licenciatura en Nutrición, Universidad Intercontinental, Insurgentes Sur 4303, Santa Úrsula Xitla, Alcaldía Tlalpan, Ciudad de México 14420, Mexico;
| | - Eduardo Madrigal-Bujaidar
- Laboratorio de Genética, Escuela Nacional de Ciencias Biológicas, Instituto Politécnico Nacional, Unidad Profesional A. López Mateos, Av. Wilfrido Massieu, Col., Lindavista, Ciudad de México 07738, Mexico; (E.M.-B.); (I.Á.-G.)
| | - Isela Álvarez-González
- Laboratorio de Genética, Escuela Nacional de Ciencias Biológicas, Instituto Politécnico Nacional, Unidad Profesional A. López Mateos, Av. Wilfrido Massieu, Col., Lindavista, Ciudad de México 07738, Mexico; (E.M.-B.); (I.Á.-G.)
| | - José Gutiérrez-Salinas
- Laboratorio de Bioquímica y Medicina Experimental, Centro Médico Nacional “20 de Noviembre”, ISSSTE, Ciudad de México 03229, Mexico;
| | - César Esquivel-Chirino
- Área de Básicas Médicas, División de Estudios Profesionales, Facultad de Odontología, Universidad Nacional Autónoma de México, Ciudad de México 04510, Mexico;
| | - Germán Chamorro-Cevallos
- Laboratorio de Toxicología Preclínica, Departamento de Farmacia, Escuela Nacional de Ciencias Biológicas, Instituto Politécnico Nacional, Av. Wilfrido Massieu 399, Col. Nueva Industrial Vallejo, Del. Gustavo A. Madero, Ciudad de México 07738, Mexico; (G.C.-C.); (J.M.C.-L.)
| | - José Melesio Cristóbal-Luna
- Laboratorio de Toxicología Preclínica, Departamento de Farmacia, Escuela Nacional de Ciencias Biológicas, Instituto Politécnico Nacional, Av. Wilfrido Massieu 399, Col. Nueva Industrial Vallejo, Del. Gustavo A. Madero, Ciudad de México 07738, Mexico; (G.C.-C.); (J.M.C.-L.)
| | - José A. Morales-González
- Laboratorio de Medicina de Conservación, Escuela Superior de Medicina, Instituto Politécnico Nacional, Plan de San Luis y Díaz Mirón, Col. Casco de Santo Tomás, Del. Miguel Hidalgo, Ciudad de México 11340, Mexico; (N.V.-M.); (M.A.-V.); (E.O.M.-S.)
- Correspondence: (Á.M.-G.); (J.A.M.-G.); Tel.: +52-55-5729-6300 (Á.M.-G. & J.A.M.-G.)
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86
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Golubickaite I, Ugenskiene R, Cepaite J, Ziliene E, Inciura A, Poskiene L, Juozaityte E. Mitochondria-related TFAM gene variants and their effects on patients with cervical cancer. Biomed Rep 2021; 15:106. [PMID: 34765190 PMCID: PMC8576402 DOI: 10.3892/br.2021.1482] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2021] [Accepted: 10/13/2021] [Indexed: 12/26/2022] Open
Abstract
Cervical cancer is the fourth most common type of cancer in women worldwide, with high incidence and mortality rates, particularly in developing countries. There are human papillomavirus vaccines and cytological screening programs available; however, there are no molecular markers that would aid the prognosis of the course of the disease or prediction of the outcomes of the patients. The aim of the present study was to investigate the associations between single nucleotide polymorphisms (SNPs) of the mitochondrial transcription factor A (TFAM) gene (rs11006132, rs11006129, rs1937, rs16912174, rs16912202 and rs3900887), and the clinical parameters and tumor phenotype of patients with cervical cancer. DNA isolated from patients with cervical cancer (n=172) was used for genotyping using Real-Time PCR using TaqMan probes. It was revealed that the TFAM rs3900887 TT and AT genotypes were associated with a lower risk of developing larger tumors. The results showed an association between the rs3900887 SNP and tumor phenotype, indicating TFAM rs3900887 as a potential biomarker for tumor size in cervical cancer.
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Affiliation(s)
- Ieva Golubickaite
- Department of Genetics and Molecular Medicine, Lithuanian University of Health Sciences, 44307 Kaunas, Lithuania
| | - Rasa Ugenskiene
- Department of Genetics and Molecular Medicine, Lithuanian University of Health Sciences, 44307 Kaunas, Lithuania.,Institute of Oncology, Lithuanian University of Health Sciences, 44307 Kaunas, Lithuania
| | - Juste Cepaite
- Institute of Oncology, Lithuanian University of Health Sciences, 44307 Kaunas, Lithuania
| | - Egle Ziliene
- Institute of Oncology, Lithuanian University of Health Sciences, 44307 Kaunas, Lithuania
| | - Arturas Inciura
- Institute of Oncology, Lithuanian University of Health Sciences, 44307 Kaunas, Lithuania
| | - Lina Poskiene
- Department of Pathological Anatomy, Lithuanian University of Health Sciences, 44307 Kaunas, Lithuania
| | - Elona Juozaityte
- Institute of Oncology, Lithuanian University of Health Sciences, 44307 Kaunas, Lithuania
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87
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Freire TS, Mori MP, Miranda JNFA, Muta LYM, Machado FT, Moreno NC, Souza-Pinto NC. Increased H2O2 levels and p53 stabilization lead to mitochondrial dysfunction in XPC-deficient cells. Carcinogenesis 2021; 42:1380-1389. [PMID: 34447990 DOI: 10.1093/carcin/bgab079] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2020] [Revised: 08/07/2021] [Accepted: 08/26/2021] [Indexed: 11/13/2022] Open
Abstract
XPC deficiency is associated with mitochondrial dysfunction, increased mitochondrial H2O2 production and sensitivity to the Complex III inhibitor antimycin A (AA), through a yet unclear mechanism. We found an imbalanced expression of several proteins that participate in important mitochondrial function and increased expression and phosphorylation of the tumor suppressor p53 in Xeroderma pigmentosum complementation group C (XP-C) (XPC-null) cells compared with an isogenic line corrected in locus with wild-type XPC (XPC-wt). Interestingly, inhibition of p53 nuclear import reversed the overexpression of mitochondrial proteins, whereas AA treatment increased p53 expression more strongly in the XP-C cells. However, inhibition of p53 substantially increased XP-C cellular sensitivity to AA treatment, suggesting that p53 is a critical factor mediating the cellular response to mitochondrial stress. On the other hand, treatment with the antioxidant N-acetylcysteine increased glutathione concentration and decreased basal H2O2 production, p53 levels and sensitivity to AA treatment in the XPC-null back to the levels found in XPC-wt cells. Thus, the results suggest a critical role for mitochondrially generated H2O2 in the regulation of p53 expression, which in turn modulates XP-C sensitivity to agents that cause mitochondrial stress.
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Affiliation(s)
- T S Freire
- Departamento de Bioquímica, Instituto de Química, Universidade de São Paulo, São Paulo 05508-000, SP, Brazil
| | - M P Mori
- Departamento de Bioquímica, Instituto de Química, Universidade de São Paulo, São Paulo 05508-000, SP, Brazil
| | - J N F A Miranda
- Departamento de Bioquímica, Instituto de Química, Universidade de São Paulo, São Paulo 05508-000, SP, Brazil
| | - L Y M Muta
- Departamento de Bioquímica, Instituto de Química, Universidade de São Paulo, São Paulo 05508-000, SP, Brazil
| | - F T Machado
- Departamento de Bioquímica, Instituto de Química, Universidade de São Paulo, São Paulo 05508-000, SP, Brazil
| | - N C Moreno
- Departamento de Bioquímica, Instituto de Química, Universidade de São Paulo, São Paulo 05508-000, SP, Brazil
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88
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Payandeh Z, Pirpour Tazehkand A, Azargoonjahromi A, Almasi F, Alagheband Bahrami A. The Role of Cell Organelles in Rheumatoid Arthritis with Focus on Exosomes. Biol Proced Online 2021; 23:20. [PMID: 34736402 PMCID: PMC8567674 DOI: 10.1186/s12575-021-00158-4] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2021] [Accepted: 10/18/2021] [Indexed: 02/08/2023] Open
Abstract
Auto-immune diseases involved at least 25% of the population in wealthy countries. Several factors including genetic, epigenetic, and environmental elements are implicated in development of Rheumatoid Arthritis as an autoimmune disease. Autoantibodies cause synovial inflammation and arthritis, if left untreated or being under continual external stimulation, could result in chronic inflammation, joint injury, and disability. T- and B-cells, signaling molecules, proinflammatory mediators, and synovium-specific targets are among the new therapeutic targets. Exosomes could be employed as therapeutic vectors in the treatment of autoimmune diseases. Herein, the role of cell organelle particularly exosomes in Rheumatoid Arthritis had discussed and some therapeutic applications of exosome highlighted.
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Affiliation(s)
- Zahra Payandeh
- Immunology Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Abbas Pirpour Tazehkand
- Department of Biochemistry and Clinical Laboratories, Faculty of Medicine, Tabriz University of Medical Sciences, Tabriz, Iran
| | | | - Faezeh Almasi
- Pharmaceutical Biotechnology Lab, Department of Microbial Biotechnology, School of Biology and Center of Excellence in Phylogeny of Living Organisms, College of Science, University of Tehran, Tehran, Iran
| | - Armina Alagheband Bahrami
- Department of Biotechnology, School of Advanced Technologies in Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
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89
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Inatomi T, Matsuda S, Ishiuchi T, Do Y, Nakayama M, Abe S, Kasho K, Wanrooij S, Nakada K, Ichiyanagi K, Sasaki H, Yasukawa T, Kang D. TFB2M and POLRMT are essential for mammalian mitochondrial DNA replication. BIOCHIMICA ET BIOPHYSICA ACTA-MOLECULAR CELL RESEARCH 2021; 1869:119167. [PMID: 34744028 DOI: 10.1016/j.bbamcr.2021.119167] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/08/2021] [Revised: 10/13/2021] [Accepted: 10/13/2021] [Indexed: 12/24/2022]
Abstract
Two classes of replication intermediates have been observed from mitochondrial DNA (mtDNA) in many mammalian tissue and cells with two-dimensional agarose gel electrophoresis. One is assigned to leading-strand synthesis in the absence of synchronous lagging-strand synthesis (strand-asynchronous replication), and the other has properties of coupled leading- and lagging-strand synthesis (strand-coupled replication). While strand-asynchronous replication is primed by long noncoding RNA synthesized from a defined transcription initiation site, little is known about the commencement of strand-coupled replication. To investigate it, we attempted to abolish strand-asynchronous replication in cultured human cybrid cells by knocking out the components of the transcription initiation complexes, mitochondrial transcription factor B2 (TFB2M/mtTFB2) and mitochondrial RNA polymerase (POLRMT/mtRNAP). Unexpectedly, removal of either protein resulted in complete mtDNA loss, demonstrating for the first time that TFB2M and POLRMT are indispensable for the maintenance of human mtDNA. Moreover, a lack of TFB2M could not be compensated for by mitochondrial transcription factor B1 (TFB1M/mtTFB1). These findings indicate that TFB2M and POLRMT are crucial for the priming of not only strand-asynchronous but also strand-coupled replication, providing deeper insights into the molecular basis of mtDNA replication initiation.
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Affiliation(s)
- Teppei Inatomi
- Department of Clinical Chemistry and Laboratory Medicine, Graduate School of Medical Sciences, Kyushu University, 3-1-1 Maidashi, Higashi-ku, Fukuoka-shi, Fukuoka 812-8582, Japan
| | - Shigeru Matsuda
- Department of Clinical Chemistry and Laboratory Medicine, Graduate School of Medical Sciences, Kyushu University, 3-1-1 Maidashi, Higashi-ku, Fukuoka-shi, Fukuoka 812-8582, Japan; Department of Modomics Biology and Medicine, Institute of Development, Aging and Cancer, Tohoku University, 4-1 Seiryocho, Aoba-ku, Sendai-shi, Miyagi 980-8575, Japan
| | - Takashi Ishiuchi
- Division of Epigenomics and Development, Medical Institute of Bioregulation, Kyushu University, 3-1-1 Maidashi, Higashi-ku, Fukuoka-shi, Fukuoka 812-8582, Japan
| | - Yura Do
- Department of Clinical Chemistry and Laboratory Medicine, Graduate School of Medical Sciences, Kyushu University, 3-1-1 Maidashi, Higashi-ku, Fukuoka-shi, Fukuoka 812-8582, Japan
| | - Masunari Nakayama
- Department of Clinical Chemistry and Laboratory Medicine, Graduate School of Medical Sciences, Kyushu University, 3-1-1 Maidashi, Higashi-ku, Fukuoka-shi, Fukuoka 812-8582, Japan
| | - Shusaku Abe
- Division of Epigenomics and Development, Medical Institute of Bioregulation, Kyushu University, 3-1-1 Maidashi, Higashi-ku, Fukuoka-shi, Fukuoka 812-8582, Japan
| | - Kazutoshi Kasho
- Department of Medical Biochemistry and Biophysics, Umeå University, Umeå, Sweden
| | - Sjoerd Wanrooij
- Department of Medical Biochemistry and Biophysics, Umeå University, Umeå, Sweden
| | - Kazuto Nakada
- Faculty of Life and Environmental Sciences, University of Tsukuba, 1-1-1 Tennoudai, Tsukuba-shi, Ibaraki 305-8572, Japan
| | - Kenji Ichiyanagi
- Department of Animal Sciences, Graduate School of Bioagricultural Sciences, Nagoya University, Furo-cho, Chikusa-ku, Nagoya-shi, Aichi 464-8601, Japan
| | - Hiroyuki Sasaki
- Division of Epigenomics and Development, Medical Institute of Bioregulation, Kyushu University, 3-1-1 Maidashi, Higashi-ku, Fukuoka-shi, Fukuoka 812-8582, Japan
| | - Takehiro Yasukawa
- Department of Clinical Chemistry and Laboratory Medicine, Graduate School of Medical Sciences, Kyushu University, 3-1-1 Maidashi, Higashi-ku, Fukuoka-shi, Fukuoka 812-8582, Japan; Department of Pathology and Oncology, Juntendo University School of Medicine, 2-1-1 Hongo, Bunkyo-ku, Tokyo 113-8421, Japan.
| | - Dongchon Kang
- Department of Clinical Chemistry and Laboratory Medicine, Graduate School of Medical Sciences, Kyushu University, 3-1-1 Maidashi, Higashi-ku, Fukuoka-shi, Fukuoka 812-8582, Japan
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90
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Averbeck D, Rodriguez-Lafrasse C. Role of Mitochondria in Radiation Responses: Epigenetic, Metabolic, and Signaling Impacts. Int J Mol Sci 2021; 22:ijms222011047. [PMID: 34681703 PMCID: PMC8541263 DOI: 10.3390/ijms222011047] [Citation(s) in RCA: 70] [Impact Index Per Article: 23.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2021] [Revised: 09/24/2021] [Accepted: 10/08/2021] [Indexed: 12/15/2022] Open
Abstract
Until recently, radiation effects have been considered to be mainly due to nuclear DNA damage and their management by repair mechanisms. However, molecular biology studies reveal that the outcomes of exposures to ionizing radiation (IR) highly depend on activation and regulation through other molecular components of organelles that determine cell survival and proliferation capacities. As typical epigenetic-regulated organelles and central power stations of cells, mitochondria play an important pivotal role in those responses. They direct cellular metabolism, energy supply and homeostasis as well as radiation-induced signaling, cell death, and immunological responses. This review is focused on how energy, dose and quality of IR affect mitochondria-dependent epigenetic and functional control at the cellular and tissue level. Low-dose radiation effects on mitochondria appear to be associated with epigenetic and non-targeted effects involved in genomic instability and adaptive responses, whereas high-dose radiation effects (>1 Gy) concern therapeutic effects of radiation and long-term outcomes involving mitochondria-mediated innate and adaptive immune responses. Both effects depend on radiation quality. For example, the increased efficacy of high linear energy transfer particle radiotherapy, e.g., C-ion radiotherapy, relies on the reduction of anastasis, enhanced mitochondria-mediated apoptosis and immunogenic (antitumor) responses.
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Affiliation(s)
- Dietrich Averbeck
- Laboratory of Cellular and Molecular Radiobiology, PRISME, UMR CNRS 5822/IN2P3, IP2I, Lyon-Sud Medical School, University Lyon 1, 69921 Oullins, France;
- Correspondence:
| | - Claire Rodriguez-Lafrasse
- Laboratory of Cellular and Molecular Radiobiology, PRISME, UMR CNRS 5822/IN2P3, IP2I, Lyon-Sud Medical School, University Lyon 1, 69921 Oullins, France;
- Department of Biochemistry and Molecular Biology, Lyon-Sud Hospital, Hospices Civils de Lyon, 69310 Pierre-Bénite, France
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91
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Yang C, Luo P, Chen SJ, Deng ZC, Fu XL, Xu DN, Tian YB, Huang YM, Liu WJ. Resveratrol sustains intestinal barrier integrity, improves antioxidant capacity, and alleviates inflammation in the jejunum of ducks exposed to acute heat stress. Poult Sci 2021; 100:101459. [PMID: 34614430 PMCID: PMC8498463 DOI: 10.1016/j.psj.2021.101459] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2021] [Revised: 08/23/2021] [Accepted: 08/26/2021] [Indexed: 02/06/2023] Open
Abstract
Resveratrol, a natural antioxidant, anti-inflammatory plant extract, was found to have a protective effect in poultry subjected to heat stress. In this study, we strove to characterize resveratrol on intestinal of duck exposed to acute heat stress and investigate the underlying mechanism. A total of 120 Shan-ma ducks (60 days old) were randomly divided into 2 groups. The control group was fed a basal diet, and the resveratrol group was fed a basal diet supplemented with 400 mg/kg resveratrol. Animals in 2 groups were kept at a temperature of 24°C ± 2°C for 15 d. Then, animals of both groups were placed in an artificial climate room at 39°C. Twelve ducks of each group were sacrificed for sampling at 0, 30, and 60 min, respectively. Results indicated that resveratrol increased the ratio of villus height to crypt depth, increased the number of goblet cells, and reduced the histopathological damage of jejunum caused by acute heat stress. Furthermore, the gene expression of heat shock proteins (HSP60, HSP70, and HSP90) and tight junction proteins (CLDN1 and OCLN) was significantly increased in the resveratrol group compared to that in the control groups. Simultaneously, resveratrol significantly activated the SIRT1-NRF1/NRF2 signaling pathways, improved ATP level of jejunum, and increased SOD and CAT antioxidant enzymes activities. In addition, we found that the NF-κB/NLRP3 inflammasome signaling pathways were repressed under acute heat stress. Meanwhile, supplement resveratrol further inhibited the NLRP3 inflammasome pathway, decreased protein level of NLRP3 and caspase1 p20, reduced the secretion of IL-1β. Taken together, our results indicate that resveratrol against the oxidative damage and inflammation injury in duck jejunum induced by heat stress via active SIRT1 signaling pathways.
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Affiliation(s)
- Chen Yang
- Zhongkai University of Agriculture and Engineering, Guangdong, Guangzhou 510225, China; Guangdong Province Key Laboratory of Waterfowl Healthy Breeding, Guangdong, Guangzhou 510225, China
| | - Pei Luo
- Zhongkai University of Agriculture and Engineering, Guangdong, Guangzhou 510225, China; Guangdong Province Key Laboratory of Waterfowl Healthy Breeding, Guangdong, Guangzhou 510225, China
| | - Shi-Jian Chen
- Zhongkai University of Agriculture and Engineering, Guangdong, Guangzhou 510225, China; Guangdong Province Key Laboratory of Waterfowl Healthy Breeding, Guangdong, Guangzhou 510225, China
| | - Zhi-Chao Deng
- Zhongkai University of Agriculture and Engineering, Guangdong, Guangzhou 510225, China; Guangdong Province Key Laboratory of Waterfowl Healthy Breeding, Guangdong, Guangzhou 510225, China
| | - Xin-Liang Fu
- Zhongkai University of Agriculture and Engineering, Guangdong, Guangzhou 510225, China; Guangdong Province Key Laboratory of Waterfowl Healthy Breeding, Guangdong, Guangzhou 510225, China
| | - Dan-Ning Xu
- Zhongkai University of Agriculture and Engineering, Guangdong, Guangzhou 510225, China; Guangdong Province Key Laboratory of Waterfowl Healthy Breeding, Guangdong, Guangzhou 510225, China
| | - Yun-Bo Tian
- Zhongkai University of Agriculture and Engineering, Guangdong, Guangzhou 510225, China; Guangdong Province Key Laboratory of Waterfowl Healthy Breeding, Guangdong, Guangzhou 510225, China
| | - Yun-Mao Huang
- Zhongkai University of Agriculture and Engineering, Guangdong, Guangzhou 510225, China; Guangdong Province Key Laboratory of Waterfowl Healthy Breeding, Guangdong, Guangzhou 510225, China
| | - Wen-Jun Liu
- Zhongkai University of Agriculture and Engineering, Guangdong, Guangzhou 510225, China; Guangdong Province Key Laboratory of Waterfowl Healthy Breeding, Guangdong, Guangzhou 510225, China.
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Yoo A, Jang YJ, Ahn J, Jung CH, Ha TY. 2,6-Dimethoxy-1,4-benzoquinone increases skeletal muscle mass and performance by regulating AKT/mTOR signaling and mitochondrial function. PHYTOMEDICINE : INTERNATIONAL JOURNAL OF PHYTOTHERAPY AND PHYTOPHARMACOLOGY 2021; 91:153658. [PMID: 34332284 DOI: 10.1016/j.phymed.2021.153658] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/10/2021] [Revised: 06/01/2021] [Accepted: 07/06/2021] [Indexed: 06/13/2023]
Abstract
BACKGROUND 2,6-Dimethoxy-1,4-benzoquinone (DMBQ), a natural phytochemical present in fermented wheat germ, has been reported to exert anti-cancer, anti-inflammatory, and anti-adipogenic effects. However, the effect of DMBQ on muscle hypertrophy and myoblast differentiation has not been elucidated. PURPOSE We investigated the effect of DMBQ on skeletal muscle mass and muscle function and then determined the possible mechanism of DMBQ. METHODS To examine myogenic differentiation and hypertrophy, confluent C2C12 cells were incubated in differentiation medium with or without various concentrations of DMBQ for 4 days. In animal experiments, C57BL/6 mice were fed DMBQ-containing AIN-93 diet for 7 weeks. Grip strength, treadmill, microscopic evaluation of muscle tissue, western blotting, and quantitative real-time PCR were performed. RESULTS DMBQ significantly increased fusion index, myotube size, and the protein expression of myosin heavy chain (MHC). DMBQ increased the phosphorylation of protein kinase B (AKT) and p70 ribosomal protein S6 kinase (S6K), whereas the phosphorylation of these proteins was abolished by the phosphoinositide 3-kinase inhibitor LY294002 in C2C12 cells. In addition, DMBQ treatment increased peroxisome proliferator-activated receptor gamma coactivator 1 alpha (PGC1α), which programs mitochondrial biogenesis, protein levels compared with control C2C12 cells. DMBQ significantly increased maximal respiration and spare respiratory capacity in C2C12 cells. In animal experiments, DMBQ increased skeletal muscle weights and skeletal muscle fiber size compared with the control group values. In addition, the DMBQ group showed increased grip strength and running distance on an accelerating treadmill. The protein expression of total MHC, MHC1, MHC2A, and MHC2B in skeletal muscle was upregulated by DMBQ supplementation. We found that DMBQ increased the phosphorylation of AKT and mammalian target of rapamycin (mTOR), as well as downstream S6K and eukaryotic translation initiation factor 4E-binding protein 1 (4E-BP1) in skeletal muscle. DMBQ also stimulated mRNA expression of PGC1α, accompanied by an increase in mitochondrial DNA content, oxidative phosphorylation (OXPHOS) proteins, and oxidative enzyme activity. CONCLUSION Collectively, DMBQ was shown to increase skeletal muscle mass and performance by regulating the AKT/mTOR signaling pathway and enhancing mitochondrial function, which might be useful for the treatment and prevention of skeletal muscle atrophy.
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Affiliation(s)
- Ahyoung Yoo
- Division of Food Functionality Research, Korea Food Research Institute, Wanju-gun 55365, South Korea; Department of Food and Nutrition, Chungnam National University, Daejeon 34134, South Korea
| | - Young Jin Jang
- Division of Food Functionality Research, Korea Food Research Institute, Wanju-gun 55365, South Korea
| | - Jiyun Ahn
- Division of Food Functionality Research, Korea Food Research Institute, Wanju-gun 55365, South Korea; Division of Food Biotechnology, University of Science and Technology, Daejeon 34113, South Korea
| | - Chang Hwa Jung
- Division of Food Functionality Research, Korea Food Research Institute, Wanju-gun 55365, South Korea; Division of Food Biotechnology, University of Science and Technology, Daejeon 34113, South Korea
| | - Tae Youl Ha
- Division of Food Functionality Research, Korea Food Research Institute, Wanju-gun 55365, South Korea; Division of Food Biotechnology, University of Science and Technology, Daejeon 34113, South Korea.
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93
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Balasubramanian N, Jadhav G, Sakharkar AJ. Repeated mild traumatic brain injuries perturb the mitochondrial biogenesis via DNA methylation in the hippocampus of rat. Mitochondrion 2021; 61:11-24. [PMID: 34508891 DOI: 10.1016/j.mito.2021.09.001] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2021] [Revised: 08/26/2021] [Accepted: 09/07/2021] [Indexed: 12/23/2022]
Abstract
Mitochondrial biogenesis in the brain is impaired in various neurological disorders including traumatic brain injury (TBI). The long-lasting effects of TBI may be, in part, attributed to epigenetic mechanisms such as DNA methylation. However, the role of DNA methylation on regulatory elements of nuclear and mitochondrial genome in mitochondrial biogenesis is not known. We examined the epigenetic regulation of mitochondrial transcription factor A (TFAM), and further probed its implications in mitochondrial dysfunction in the hippocampus of rats subjected to repeated mild TBI (rMTBI) using weight drop injury paradigm. rMTBI-induced hypermethylation at TFAM promoter resulted in deficits in its protein levels in mitochondria after immediate (48 h) and protracted (30 d) time points. Further, rMTBI also caused hypomethylation of mitochondrial DNA (mtDNA) promoters (HSP1 and HSP2), which further culminated into low binding of TFAM. rMTBI-induced changes weakened mitochondrial biogenesis in terms of reduced mtDNA-encoded rRNA, mRNA, and protein levels leading to shortages of ATP. To verify the potential role of mtDNA methylation in rMTBI-induced persistent mitochondrial dysfunction, rMTBI-induced rats were treated with methionine, a methyl donor. Methionine treatment restored the methylation levels on HSP1 and HSP2 resulting in efficient binding of TFAM and normalized the rRNA, mRNA, and protein levels. These findings suggest the crucial role of DNA methylation at nuclear and mitochondrial promoter regions in mitochondrial gene expression and ATP activity in the hippocampus after rMTBI.
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Affiliation(s)
| | - Gouri Jadhav
- Department of Biotechnology, Savitribai Phule Pune University, Pune 411 007, India
| | - Amul J Sakharkar
- Department of Biotechnology, Savitribai Phule Pune University, Pune 411 007, India.
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94
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Tsilingiris D, Tzeravini E, Koliaki C, Dalamaga M, Kokkinos A. The Role of Mitochondrial Adaptation and Metabolic Flexibility in the Pathophysiology of Obesity and Insulin Resistance: an Updated Overview. Curr Obes Rep 2021; 10:191-213. [PMID: 33840072 DOI: 10.1007/s13679-021-00434-0] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 03/30/2021] [Indexed: 12/27/2022]
Abstract
PURPOSE OF REVIEW The term "metabolic flexibility" denotes the dynamic responses of the cellular oxidative machinery in order to adapt to changes in energy substrate availability. A progressive loss of this adaptive capacity has been implicated in the development of obesity-related comorbidities. Mitochondria are dynamic intracellular organelles which play a fundamental role in energy metabolism, and the mitochondrial adaptation to environmental challenges may be viewed as the functional component of metabolic flexibility. Herein, we attempt to comprehensively review the available evidence regarding the role of mitochondrial adaptation and metabolic flexibility in the pathogenesis of obesity and related morbidities, namely insulin resistance states and non-alcoholic fatty liver disease (NAFLD). RECENT FINDINGS Overall, there is a concrete body of evidence to support the presence of impaired mitochondrial adaptation as a principal component of systemic metabolic inflexibility in conditions related to obesity. There are still many unresolved questions regarding the relationship between the gradual loss of mitochondrial adaptability and the progression of obesity-related complications, such as causality issues, the timely appearance and reversibility of the described disturbances, and the generalizability of the findings to the mitochondrial content of every affected tissue or organ. The evidence regarding the causality between the observed associations remains inconclusive, although most of the available data points towards a bidirectional, potentially mutually amplifying relationship. The spectrum of NAFLD is of particular interest, since functional and pathological changes in the course of its development closely mirror the progression of dysmetabolism, if not constituting a dynamic component of the latter.
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Affiliation(s)
- Dimitrios Tsilingiris
- First Department of Propaedeutic Internal Medicine, School of Medicine, Laiko General Hospital, National and Kapodistrian University of Athens, Athens, Greece.
- Department of Internal Medicine I and Clinical Chemistry, University of Heidelberg, Heidelberg, Germany.
| | - Evangelia Tzeravini
- First Department of Propaedeutic Internal Medicine, School of Medicine, Laiko General Hospital, National and Kapodistrian University of Athens, Athens, Greece
| | - Chrysi Koliaki
- First Department of Propaedeutic Internal Medicine, School of Medicine, Laiko General Hospital, National and Kapodistrian University of Athens, Athens, Greece
| | - Maria Dalamaga
- Department of Biological Chemistry, School of Medicine, National and Kapodistrian University of Athens, Mikras Asias 75, 11527, Athens, Greece
| | - Alexander Kokkinos
- First Department of Propaedeutic Internal Medicine, School of Medicine, Laiko General Hospital, National and Kapodistrian University of Athens, Athens, Greece
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95
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Del Rey MJ, Meroño C, Municio C, Usategui A, Mittelbrunn M, García-Consuegra I, Criado G, Pablos JL. TFAM-deficient mouse skin fibroblasts - an ex vivo model of mitochondrial dysfunction. Dis Model Mech 2021; 14:271052. [PMID: 34312668 PMCID: PMC8405849 DOI: 10.1242/dmm.048995] [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: 03/04/2021] [Accepted: 07/15/2021] [Indexed: 11/20/2022] Open
Abstract
Mitochondrial dysfunction associates with several pathological processes and contributes to chronic inflammatory and ageing-related diseases. Mitochondrial transcription factor A (TFAM) plays a critical role in maintaining mtDNA integrity and function. Taking advantage of Tfamfl/fl UBC-Cre/ERT2+/+ mice to investigate mitochondrial dysfunction in the stromal cell component, we describe an inducible in vitro model of mitochondrial dysfunction by stable depletion of TFAM in primary mouse skin fibroblasts (SK-FBs) after 4-hydroxytamoxifen (4-OHT) administration. Tfam gene deletion caused a sustained reduction in Tfam and mtDNA-encoded mRNA in Cre(+) SK-FBs cultured for low (LP) and high (HP) passages that translated into a loss of TFAM protein. TFAM depletion led to a substantial reduction in mitochondrial respiratory chain complexes that was exacerbated in HP SK-FB cultures. The assembly pattern showed that the respiratory complexes fail to reach the respirasome in 4-OHT-treated Cre(+) SK-FBs. Functionally, mito-stress and glycolysis-stress tests showed that mitochondrial dysfunction developed after long-term 4-OHT treatment in HP Cre(+) SK-FBs and was compensated by an increase in the glycolytic capacity. Finally, expression analysis revealed that 4-OHT-treated HP Cre(+) SK-FBs showed a senescent and pro-inflammatory phenotype.
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Affiliation(s)
- Manuel J Del Rey
- Grupo de Enfermedades Inflamatorias y Autoinmunes, Instituto de Investigación Hospital 12 de Octubre (i+12), 28041 Madrid, Spain
| | - Carolina Meroño
- Grupo de Enfermedades Inflamatorias y Autoinmunes, Instituto de Investigación Hospital 12 de Octubre (i+12), 28041 Madrid, Spain
| | - Cristina Municio
- Grupo de Enfermedades Inflamatorias y Autoinmunes, Instituto de Investigación Hospital 12 de Octubre (i+12), 28041 Madrid, Spain
| | - Alicia Usategui
- Grupo de Enfermedades Inflamatorias y Autoinmunes, Instituto de Investigación Hospital 12 de Octubre (i+12), 28041 Madrid, Spain
| | - María Mittelbrunn
- Departamento de Biología Molecular, Centro de Biología Molecular Severo Ochoa (CBMSO), Consejo Superior de Investigaciones Científicas (CSIC)-Universidad Autónoma de Madrid (UAM), 28049 Madrid, Spain.,Instituto de Investigación Hospital 12 de Octubre (i+12), 28041 Madrid, Spain
| | - Inés García-Consuegra
- Unidad de Proteómica, Instituto de Investigación Hospital 12 de Octubre (i+12), 28041 Madrid, Spain.,Centro de Investigación Biomédica en Red de Enfermedades Raras (CIBERER), 28029 Madrid, Spain
| | - Gabriel Criado
- Grupo de Enfermedades Inflamatorias y Autoinmunes, Instituto de Investigación Hospital 12 de Octubre (i+12), 28041 Madrid, Spain
| | - José L Pablos
- Grupo de Enfermedades Inflamatorias y Autoinmunes, Instituto de Investigación Hospital 12 de Octubre (i+12), 28041 Madrid, Spain.,Departamento de Medicina, Universidad Complutense de Madrid, 28040 Madrid, Spain
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96
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Ketogenesis controls mitochondrial gene expression and rescues mitochondrial bioenergetics after cervical spinal cord injury in rats. Sci Rep 2021; 11:16359. [PMID: 34381166 PMCID: PMC8357839 DOI: 10.1038/s41598-021-96003-5] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2020] [Accepted: 07/29/2021] [Indexed: 11/08/2022] Open
Abstract
A better understanding of the secondary injury mechanisms that occur after traumatic spinal cord injury (SCI) is essential for the development of novel neuroprotective strategies linked to the restoration of metabolic deficits. We and others have shown that Ketogenic diet (KD), a high fat, moderate in proteins and low in carbohydrates is neuroprotective and improves behavioural outcomes in rats with acute SCI. Ketones are alternative fuels for mitochondrial ATP generation, and can modulate signaling pathways via targeting specific receptors. Here, we demonstrate that ad libitum administration of KD for 7 days after SCI rescued mitochondrial respiratory capacity, increased parameters of mitochondrial biogenesis, affected the regulation of mitochondrial-related genes, and activated the NRF2-dependent antioxidant pathway. This study demonstrates that KD improves post-SCI metabolism by rescuing mitochondrial function and supports the potential of KD for treatment of acute SCI in humans.
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97
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Molaei P, Vaseghi S, Entezari M, Hashemi M, Nasehi M. The Effect of NeuroAid (MLC901) on Cholestasis-Induced Spatial Memory Impairment with Respect to the Expression of BAX, BCL-2, BAD, PGC-1α and TFAM Genes in the Hippocampus of Male Wistar Rats. Neurochem Res 2021; 46:2154-2166. [PMID: 34031842 DOI: 10.1007/s11064-021-03353-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2021] [Revised: 05/10/2021] [Accepted: 05/12/2021] [Indexed: 12/31/2022]
Abstract
Cholestasis is a bile flow reduction that is induced following Bile Duct Ligation (BDL). Cholestasis impairs memory and induces apoptosis. Apoptosis consists of two pathways: intrinsic and extrinsic. The intrinsic pathway is modulated by BCL-2 (B cell lymphoma-2) family proteins. BCL-2 (a pro-survival BCL-2 protein) has anti-apoptotic effect, while BAD (BCL-2-associated death) and BAX (BCL-2-associated X), the other members of BCL-2 family have pro-apoptotic effect. Furthermore, TFAM (mitochondrial transcriptional factor A) is involved in transcription and maintenance of mitochondrial DNA and PGC-1α (peroxisome proliferator-activated receptor γ coactivator-1α) is a master regulator of mitochondrial biogenesis. On the other hand, NeuroAid is a Traditional Chinese Medicine with neuroprotective and anti-apoptosis effects. In this study, we evaluated the effect of cholestasis on spatial memory and expression of BCL-2, BAD, BAX, TFAM, and PGC-1α in the hippocampus of rats. Additionally, we assessed the effect of NeuroAid on cholestasis-induced cognitive and genetic alterations. Cholestasis was induced by BDL surgery and NeuroAid was injected intraperitoneal at the dose of 0.4 mg/kg. Furthermore, spatial memory was evaluated using Morris Water Maze (MWM) apparatus. The results showed cholestasis impaired spatial memory, increased the expression of BAD and BAX, decreased the expression of TFAM and PGC-1α, and did not alter the expression of BCL-2. Also, NeuroAid decreased the expression of BAD and BAX and increased the expression of TFAM, PGC-1α, and BCL-2. In conclusion, cholestasis impaired spatial memory and increased the expression of pro-apoptotic genes. Also, cholestasis decreased the expression of TFAM and PGC-1α. Interestingly, NeuroAid restored the effects of cholestasis.
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Affiliation(s)
- Pejman Molaei
- Department of Genetics, Faculty of Advanced Science and Technology, Tehran Medical Sciences, Islamic Azad University, Tehran, Iran
| | - Salar Vaseghi
- Cognitive and Neuroscience Research Center (CNRC), Amir-Almomenin Hospital, Tehran Medical Sciences, Islamic Azad University, P.O. Box: 13145-784, Tehran, Iran
- Department of Cognitive Neuroscience, Institute for Cognitive Science Studies (ICSS), Tehran, Iran
| | - Maliheh Entezari
- Department of Genetics, Faculty of Advanced Science and Technology, Tehran Medical Sciences, Islamic Azad University, Tehran, Iran
| | - Mehrdad Hashemi
- Department of Genetics, Faculty of Advanced Science and Technology, Tehran Medical Sciences, Islamic Azad University, Tehran, Iran
| | - Mohammad Nasehi
- Cognitive and Neuroscience Research Center (CNRC), Amir-Almomenin Hospital, Tehran Medical Sciences, Islamic Azad University, P.O. Box: 13145-784, Tehran, Iran.
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98
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Fu Z, Dean JW, Xiong L, Dougherty MW, Oliff KN, Chen ZME, Jobin C, Garrett TJ, Zhou L. Mitochondrial transcription factor A in RORγt + lymphocytes regulate small intestine homeostasis and metabolism. Nat Commun 2021; 12:4462. [PMID: 34294718 PMCID: PMC8298438 DOI: 10.1038/s41467-021-24755-9] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2020] [Accepted: 06/28/2021] [Indexed: 12/13/2022] Open
Abstract
RORγt+ lymphocytes, including interleukin 17 (IL-17)-producing gamma delta T (γδT17) cells, T helper 17 (Th17) cells, and group 3 innate lymphoid cells (ILC3s), are important immune regulators. Compared to Th17 cells and ILC3s, γδT17 cell metabolism and its role in tissue homeostasis remains poorly understood. Here, we report that the tissue milieu shapes splenic and intestinal γδT17 cell gene signatures. Conditional deletion of mitochondrial transcription factor A (Tfam) in RORγt+ lymphocytes significantly affects systemic γδT17 cell maintenance and reduces ILC3s without affecting Th17 cells in the gut. In vivo deletion of Tfam in RORγt+ lymphocytes, especially in γδT17 cells, results in small intestine tissue remodeling and increases small intestine length by enhancing the type 2 immune responses in mice. Moreover, these mice show dysregulation of the small intestine transcriptome and metabolism with less body weight but enhanced anti-helminth immunity. IL-22, a cytokine produced by RORγt+ lymphocytes inhibits IL-13-induced tuft cell differentiation in vitro, and suppresses the tuft cell-type 2 immune circuit and small intestine lengthening in vivo, highlighting its key role in gut tissue remodeling.
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Affiliation(s)
- Zheng Fu
- Department of Infectious Diseases and Immunology, College of Veterinary Medicine, University of Florida, Gainesville, FL, USA
| | - Joseph W Dean
- Department of Infectious Diseases and Immunology, College of Veterinary Medicine, University of Florida, Gainesville, FL, USA
| | - Lifeng Xiong
- Department of Infectious Diseases and Immunology, College of Veterinary Medicine, University of Florida, Gainesville, FL, USA
| | | | - Kristen N Oliff
- Department of Infectious Diseases and Immunology, College of Veterinary Medicine, University of Florida, Gainesville, FL, USA
| | - Zong-Ming E Chen
- Department of Laboratory Medicine and Pathology, Mayo Clinic, Rochester, MN, USA
| | - Christian Jobin
- Department of Infectious Diseases and Immunology, College of Veterinary Medicine, University of Florida, Gainesville, FL, USA
- Department of Medicine, University of Florida, Gainesville, FL, USA
| | - Timothy J Garrett
- Department of Pathology, Immunology and Laboratory Medicine, University of Florida, Gainesville, FL, 32608, USA
| | - Liang Zhou
- Department of Infectious Diseases and Immunology, College of Veterinary Medicine, University of Florida, Gainesville, FL, USA.
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99
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Wang R, Xu Y, Fang Y, Wang C, Xue Y, Wang F, Cheng J, Ren H, Wang J, Guo W, Liu L, Zhang M. Pathogenetic mechanisms of septic cardiomyopathy. J Cell Physiol 2021; 237:49-58. [PMID: 34278573 DOI: 10.1002/jcp.30527] [Citation(s) in RCA: 28] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2021] [Revised: 06/17/2021] [Accepted: 07/06/2021] [Indexed: 12/29/2022]
Abstract
Sepsis is a serious complication after infection, whose further development may lead to multiple organ dysfunction syndrome and so on. It is an important cause of death in critically ill patients who suffered an infection. Sepsis cardiomyopathy is a common complication that exacerbates the prognosis of patients. At present, though the pathogenesis of sepsis cardiomyopathy is not completely clear, in-depth study of the pathogenesis of sepsis cardiomyopathy and the discovery of its potential therapeutic targets may decrease the mortality of sepsis patients and bring clinical benefits. This article reviews mitochondrial dysfunction, mitophagy, oxidation stress, and other mechanisms in sepsis cardiomyopathy.
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Affiliation(s)
- Runze Wang
- Department of Cardiology, Tangdu Hospital, The Fourth Military Medical University, Xi'an, Shaanxi, China.,Department of Hematology, Tangdu Hospital, The Fourth Military Medical University, Xi'an, Shaanxi, China
| | - Yuerong Xu
- Department of Orthodontics, School of Stomatology, The Fourth Military Medical University, Xi'an, Shaanxi, China
| | - Yexian Fang
- Department of Cardiology, Tangdu Hospital, The Fourth Military Medical University, Xi'an, Shaanxi, China
| | - Chiyao Wang
- Department of Cardiology, Tangdu Hospital, The Fourth Military Medical University, Xi'an, Shaanxi, China
| | - Yugang Xue
- Department of Cardiology, Tangdu Hospital, The Fourth Military Medical University, Xi'an, Shaanxi, China
| | - Fangfang Wang
- Department of Cardiology, Tangdu Hospital, The Fourth Military Medical University, Xi'an, Shaanxi, China
| | - Jin Cheng
- Department of Cardiology, Tangdu Hospital, The Fourth Military Medical University, Xi'an, Shaanxi, China
| | - He Ren
- Department of Cardiology, Tangdu Hospital, The Fourth Military Medical University, Xi'an, Shaanxi, China
| | - Jie Wang
- Department of Cardiology, Tangdu Hospital, The Fourth Military Medical University, Xi'an, Shaanxi, China
| | - Wangang Guo
- Department of Cardiology, Tangdu Hospital, The Fourth Military Medical University, Xi'an, Shaanxi, China
| | - Li Liu
- Department of Hematology, Tangdu Hospital, The Fourth Military Medical University, Xi'an, Shaanxi, China
| | - Mingming Zhang
- Department of Cardiology, Tangdu Hospital, The Fourth Military Medical University, Xi'an, Shaanxi, China
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100
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Okamoto M, Shimogishi M, Nakamura A, Suga Y, Sugawara K, Sato M, Nishi R, Fujisawa A, Yamamoto Y, Kashiba M. Differentiation of THP-1 monocytes to macrophages increased mitochondrial DNA copy number but did not increase expression of mitochondrial respiratory proteins or mitochondrial transcription factor A. Arch Biochem Biophys 2021; 710:108988. [PMID: 34274337 DOI: 10.1016/j.abb.2021.108988] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2021] [Revised: 06/19/2021] [Accepted: 07/09/2021] [Indexed: 10/20/2022]
Abstract
Monocytes are differentiated into macrophages. In this study, mitochondrial DNA copy number (mtDNAcn) levels and downstream events such as the expression of respiratory chain mRNAs were investigated during the phorbol 12-myristate 13-acetate (PMA)-induced differentiation of monocytes. Although PMA treatment increased mtDNAcn, the expression levels of mRNAs encoded in mtDNA were decreased. The levels of mitochondrial transcription factor A mRNA and protein were also decreased. The levels of coenzyme Q10 remained unchanged. These results imply that, although mtDNAcn is considered as a health marker, the levels of mtDNAcn may not always be consistent with the parameters of mitochondrial functions.
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Affiliation(s)
- Mizuho Okamoto
- School of Bioscience and Biotechnology, Tokyo University of Technology, 1404-1 Katakura, Hachioji, Tokyo 192-0982, Japan
| | - Masanori Shimogishi
- School of Bioscience and Biotechnology, Tokyo University of Technology, 1404-1 Katakura, Hachioji, Tokyo 192-0982, Japan
| | - Akari Nakamura
- School of Bioscience and Biotechnology, Tokyo University of Technology, 1404-1 Katakura, Hachioji, Tokyo 192-0982, Japan
| | - Yusuke Suga
- School of Bioscience and Biotechnology, Tokyo University of Technology, 1404-1 Katakura, Hachioji, Tokyo 192-0982, Japan
| | - Kyosuke Sugawara
- School of Bioscience and Biotechnology, Tokyo University of Technology, 1404-1 Katakura, Hachioji, Tokyo 192-0982, Japan
| | - Michio Sato
- School of Agriculture, Meiji University, Kawasaki, Kanagawa 214-8571, Japan
| | - Ryotaro Nishi
- School of Bioscience and Biotechnology, Tokyo University of Technology, 1404-1 Katakura, Hachioji, Tokyo 192-0982, Japan
| | - Akio Fujisawa
- School of Bioscience and Biotechnology, Tokyo University of Technology, 1404-1 Katakura, Hachioji, Tokyo 192-0982, Japan
| | - Yorihiro Yamamoto
- School of Bioscience and Biotechnology, Tokyo University of Technology, 1404-1 Katakura, Hachioji, Tokyo 192-0982, Japan
| | - Misato Kashiba
- School of Bioscience and Biotechnology, Tokyo University of Technology, 1404-1 Katakura, Hachioji, Tokyo 192-0982, Japan.
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