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Xu S, Yang N. The Role and Research Progress of Mitochondria in Sensorineural Hearing Loss. Mol Neurobiol 2024:10.1007/s12035-024-04470-4. [PMID: 39292339 DOI: 10.1007/s12035-024-04470-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2024] [Accepted: 08/30/2024] [Indexed: 09/19/2024]
Abstract
Hearing loss is one of the most common human diseases, seriously affecting everyday lives. Mitochondria, as the energy metabolism center in cells, are also involved in regulating active oxygen metabolism and mediating the occurrence of inflammation and apoptosis. Mitochondrial defects are closely related to hearing diseases. Studies have shown that mitochondrial DNA mutations are one of the causes of hereditary hearing loss. In addition, changes in mitochondrial homeostasis are directly related to noise-induced hearing loss and presbycusis. This review mainly summarizes and discusses the effects of mitochondrial dysfunction and mitophagy on hearing loss. Subsequently, we introduce the recent research progress of targeted mitochondria therapy in the hearing system.
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Affiliation(s)
- Shan Xu
- Department of Otolaryngology, The First Hospital of China Medical University, Shenyang, 110001, China
| | - Ning Yang
- Department of Otolaryngology, The First Hospital of China Medical University, Shenyang, 110001, China.
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2
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Kumar N, Yang ML, Sun P, Hunker KL, Li J, Jia J, Fan F, Wang J, Ning X, Gao W, Xu M, Zhang J, Chang L, Chen YE, Huo Y, Zhang Y, Ganesh SK. Genetic variation in CCDC93 is associated with elevated central systolic blood pressure, impaired arterial relaxation, and mitochondrial dysfunction. PLoS Genet 2024; 20:e1011151. [PMID: 39250516 DOI: 10.1371/journal.pgen.1011151] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2023] [Accepted: 01/23/2024] [Indexed: 09/11/2024] Open
Abstract
Genetic studies of blood pressure (BP) traits to date have been performed on conventional measures by brachial cuff sphygmomanometer for systolic BP (SBP) and diastolic BP, integrating several physiologic occurrences. Genetic associations with central SBP (cSBP) have not been well-studied. Genetic discovery studies of BP have been most often performed in European-ancestry samples. Here, we investigated genetic associations with cSBP in a Chinese population and functionally validated the impact of a novel associated coiled-coil domain containing 93 (CCDC93) gene on BP regulation. An exome-wide association study (EWAS) was performed using a mixed linear model of non-invasive cSBP and peripheral BP traits in a Han Chinese population (N = 5,954) from Beijing, China genotyped with a customized Illumina ExomeChip array. We identified four SNP-trait associations with three SNPs, including two novel associations (rs2165468-SBP and rs33975708-cSBP). rs33975708 is a coding variant in the CCDC93 gene, c.535C>T, p.Arg179Cys (MAF = 0.15%), and was associated with increased cSBP (β = 29.3 mmHg, P = 1.23x10-7). CRISPR/Cas9 genome editing was used to model the effect of Ccdc93 loss in mice. Homozygous Ccdc93 deletion was lethal prior to day 10.5 of embryonic development. Ccdc93+/- heterozygous mice were viable and morphologically normal, with 1.3-fold lower aortic Ccdc93 protein expression (P = 0.0041) and elevated SBP as compared to littermate Ccdc93+/+ controls (110±8 mmHg vs 125±10 mmHg, P = 0.016). Wire myography of Ccdc93+/- aortae showed impaired acetylcholine-induced relaxation and enhanced phenylephrine-induced contraction. RNA-Seq transcriptome analysis of Ccdc93+/- mouse thoracic aortae identified significantly enriched pathways altered in fatty acid metabolism and mitochondrial metabolism. Plasma free fatty acid levels were elevated in Ccdc93+/- mice (96±7mM vs 124±13mM, P = 0.0031) and aortic mitochondrial dysfunction was observed through aberrant Parkin and Nix protein expression. Together, our genetic and functional studies support a novel role of CCDC93 in the regulation of BP through its effects on vascular mitochondrial function and endothelial function.
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Affiliation(s)
- Nitin Kumar
- Division of Cardiovascular Medicine, Department of Internal Medicine, University of Michigan Medical School, Ann Arbor, Michigan, United States of America
- Department of Human Genetics, University of Michigan Medical School, Ann Arbor, Michigan, United States of America
| | - Min-Lee Yang
- Division of Cardiovascular Medicine, Department of Internal Medicine, University of Michigan Medical School, Ann Arbor, Michigan, United States of America
- Department of Human Genetics, University of Michigan Medical School, Ann Arbor, Michigan, United States of America
- Department of Computational Medicine and Bioinformatics, University of Michigan Medical School, Ann Arbor, Michigan, United States of America
| | - Pengfei Sun
- Department of Cardiology, Peking University First hospital, Beijing, China
- Department of Cardiology, Tianjin Medical University General Hospital, Tianjin, China
| | - Kristina L Hunker
- Division of Cardiovascular Medicine, Department of Internal Medicine, University of Michigan Medical School, Ann Arbor, Michigan, United States of America
- Department of Human Genetics, University of Michigan Medical School, Ann Arbor, Michigan, United States of America
| | - Jianping Li
- Department of Cardiology, Peking University First hospital, Beijing, China
| | - Jia Jia
- Department of Cardiology, Peking University First hospital, Beijing, China
| | - Fangfang Fan
- Department of Cardiology, Peking University First hospital, Beijing, China
| | - Jinghua Wang
- Laboratory of Epidemiology, Tianjin Neurological Institute, Tianjin, China
- Department of Neurology, Tianjin Medical University General Hospital, Tianjin, China
| | - Xianjia Ning
- Laboratory of Epidemiology, Tianjin Neurological Institute, Tianjin, China
- Department of Neurology, Tianjin Medical University General Hospital, Tianjin, China
| | - Wei Gao
- Department of Cardiology, Peking University Third hospital, Beijing, China
| | - Ming Xu
- Department of Cardiology, Peking University Third hospital, Beijing, China
| | - Jifeng Zhang
- Division of Cardiovascular Medicine, Department of Internal Medicine, University of Michigan Medical School, Ann Arbor, Michigan, United States of America
| | - Lin Chang
- Division of Cardiovascular Medicine, Department of Internal Medicine, University of Michigan Medical School, Ann Arbor, Michigan, United States of America
| | - Yuqing E Chen
- Division of Cardiovascular Medicine, Department of Internal Medicine, University of Michigan Medical School, Ann Arbor, Michigan, United States of America
| | - Yong Huo
- Department of Cardiology, Peking University First hospital, Beijing, China
| | - Yan Zhang
- Department of Cardiology, Peking University First hospital, Beijing, China
- Institute of Cardiovascular Disease, Peking University First Hospital, Beijing, China
- Hypertension Precision Diagnosis and Treatment Research Center, Peking University First Hospital, Beijing, China
| | - Santhi K Ganesh
- Division of Cardiovascular Medicine, Department of Internal Medicine, University of Michigan Medical School, Ann Arbor, Michigan, United States of America
- Department of Human Genetics, University of Michigan Medical School, Ann Arbor, Michigan, United States of America
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Koo C, Richter CP, Tan X. Roles of Sirtuins in Hearing Protection. Pharmaceuticals (Basel) 2024; 17:998. [PMID: 39204103 PMCID: PMC11357115 DOI: 10.3390/ph17080998] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2024] [Revised: 07/20/2024] [Accepted: 07/26/2024] [Indexed: 09/03/2024] Open
Abstract
Hearing loss is a health crisis that affects more than 60 million Americans. Currently, sodium thiosulfate is the only drug approved by the Food and Drug Administration (FDA) to counter hearing loss. Sirtuins were proposed as therapeutic targets in the search for new compounds or drugs to prevent or cure age-, noise-, or drug-induced hearing loss. Sirtuins are proteins involved in metabolic regulation with the potential to ameliorate sensorineural hearing loss. The mammalian sirtuin family includes seven members, SIRT1-7. This paper is a literature review on the sirtuins and their protective roles in sensorineural hearing loss. Literature search on the NCBI PubMed database and NUsearch included the keywords 'sirtuin' and 'hearing'. Studies on sirtuins without relevance to hearing and studies on hearing without relevance to sirtuins were excluded. Only primary research articles with data on sirtuin expression and physiologic auditory tests were considered. The literature review identified 183 records on sirtuins and hearing. After removing duplicates, eighty-one records remained. After screening for eligibility criteria, there were forty-eight primary research articles with statistically significant data relevant to sirtuins and hearing. Overall, SIRT1 (n = 29) was the most studied sirtuin paralog. Over the last two decades, research on sirtuins and hearing has largely focused on age-, noise-, and drug-induced hearing loss. Past and current studies highlight the role of sirtuins as a mediator of redox homeostasis. However, more studies need to be conducted on the involvement of SIRT2 and SIRT4-7 in hearing protection.
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Affiliation(s)
- Chail Koo
- Department of Otolaryngology-Head and Neck Surgery, Feinberg School of Medicine, Northwestern University, Chicago, IL 60611, USA; (C.K.); (C.-P.R.)
| | - Claus-Peter Richter
- Department of Otolaryngology-Head and Neck Surgery, Feinberg School of Medicine, Northwestern University, Chicago, IL 60611, USA; (C.K.); (C.-P.R.)
- Hugh Knowles Center for Clinical and Basic Science in Hearing and Its Disorders, Northwestern University, Evanston, IL 60208, USA
- Department of Biomedical Engineering, Northwestern University, Evanston, IL 60208, USA
- Department of Communication Sciences and Disorders, Northwestern University, Evanston, IL 60208, USA
| | - Xiaodong Tan
- Department of Otolaryngology-Head and Neck Surgery, Feinberg School of Medicine, Northwestern University, Chicago, IL 60611, USA; (C.K.); (C.-P.R.)
- Hugh Knowles Center for Clinical and Basic Science in Hearing and Its Disorders, Northwestern University, Evanston, IL 60208, USA
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Lee B, Choi HN, Che YH, Ko M, Seong HM, Jo MG, Kim SH, Song C, Yoon S, Choi J, Kim JH, Kim M, Lee MY, Park SW, Kim HJ, Kim SJ, Moon DS, Lee S, Park JH, Yeo SG, Everson RG, Kim YJ, Hong KW, Roh IS, Lyoo KS, Kim YJ, Yun SP. SARS-CoV-2 infection exacerbates the cellular pathology of Parkinson's disease in human dopaminergic neurons and a mouse model. Cell Rep Med 2024; 5:101570. [PMID: 38749422 PMCID: PMC11148862 DOI: 10.1016/j.xcrm.2024.101570] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2023] [Revised: 01/23/2024] [Accepted: 04/22/2024] [Indexed: 05/24/2024]
Abstract
While an association between Parkinson's disease (PD) and viral infections has been recognized, the impact of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) on PD progression remains unclear. Here, we demonstrate that SARS-CoV-2 infection heightens the risk of PD using human embryonic stem cell (hESC)-derived dopaminergic (DA) neurons and a human angiotensin-converting enzyme 2 (hACE2) transgenic (Tg) mouse model. Our findings reveal that SARS-CoV-2 infection exacerbates PD susceptibility and cellular toxicity in DA neurons pre-treated with human preformed fibrils (hPFFs). Additionally, nasally delivered SARS-CoV-2 infects DA neurons in hACE2 Tg mice, aggravating the damage initiated by hPFFs. Mice infected with SARS-CoV-2 display persisting neuroinflammation even after the virus is no longer detectable in the brain. A comprehensive analysis suggests that the inflammatory response mediated by astrocytes and microglia could contribute to increased PD susceptibility associated with SARS-CoV-2. These findings advance our understanding of the potential long-term effects of SARS-CoV-2 infection on the progression of PD.
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Affiliation(s)
- Bina Lee
- Department of Pharmacology, Institute of Health Sciences, College of Medicine, Gyeongsang National University, Jinju 52727, Republic of Korea
| | - Ha Nyeoung Choi
- Department of Pharmacology, Institute of Health Sciences, College of Medicine, Gyeongsang National University, Jinju 52727, Republic of Korea; Department of Convergence Medical Science, College of Medicine, Gyeongsang National University, Jinju 52727, Republic of Korea
| | - Young Hyun Che
- Department of Biomedical Science, Graduate School, Kyung Hee University, Seoul 02447, Republic of Korea; Department of Pathology, College of Medicine, Kyung Hee University, Seoul 02447, Republic of Korea
| | - Myungjun Ko
- Department of Neurosurgery, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, CA 90095, USA
| | - Hye Min Seong
- Department of Ophthalmology, Institute of Health Sciences, College of Medicine, Gyeongsang National University, Jinju 52727, Republic of Korea
| | - Min Gi Jo
- Department of Pharmacology, Institute of Health Sciences, College of Medicine, Gyeongsang National University, Jinju 52727, Republic of Korea; Department of Pathology, College of Medicine, Kyung Hee University, Seoul 02447, Republic of Korea
| | - Seon-Hee Kim
- Department of Pharmacology, Institute of Health Sciences, College of Medicine, Gyeongsang National University, Jinju 52727, Republic of Korea
| | - Chieun Song
- Department of Ophthalmology, Institute of Health Sciences, College of Medicine, Gyeongsang National University, Jinju 52727, Republic of Korea
| | - Subeen Yoon
- Department of Biomedical Science, Graduate School, Kyung Hee University, Seoul 02447, Republic of Korea; Department of Pathology, College of Medicine, Kyung Hee University, Seoul 02447, Republic of Korea
| | - Jiwoo Choi
- Department of Biomedical Science, Graduate School, Kyung Hee University, Seoul 02447, Republic of Korea; Department of Pathology, College of Medicine, Kyung Hee University, Seoul 02447, Republic of Korea
| | - Jeong Hee Kim
- Department of Biomedical Science, Graduate School, Kyung Hee University, Seoul 02447, Republic of Korea; Department of Pathology, College of Medicine, Kyung Hee University, Seoul 02447, Republic of Korea
| | - Minkyeong Kim
- Department of Neurology, Gyeongsang National University Hospital, Jinju 52727, Republic of Korea
| | - Min Young Lee
- College of Pharmacy, Research Institute of Pharmaceutical Sciences, BK21 FOUR ERGID, Vessel-Organ Interaction Research Center (MRC), Kyungpook National University, Daegu 4156, Republic of Korea
| | - Sang Won Park
- Department of Pharmacology, Institute of Health Sciences, College of Medicine, Gyeongsang National University, Jinju 52727, Republic of Korea; Department of Convergence Medical Science, College of Medicine, Gyeongsang National University, Jinju 52727, Republic of Korea
| | - Hye Jung Kim
- Department of Pharmacology, Institute of Health Sciences, College of Medicine, Gyeongsang National University, Jinju 52727, Republic of Korea; Department of Convergence Medical Science, College of Medicine, Gyeongsang National University, Jinju 52727, Republic of Korea
| | - Seong Jae Kim
- Department of Ophthalmology, Institute of Health Sciences, College of Medicine, Gyeongsang National University, Jinju 52727, Republic of Korea
| | - Do Sik Moon
- Department of Pulmonology and Critical Care Medicine, Chosun University Hospital, Gwangju 61453, Republic of Korea
| | - Sun Lee
- Department of Pathology, College of Medicine, Kyung Hee University, Seoul 02447, Republic of Korea; Research Center, TissueIn, Inc., Seoul 06158, Republic of Korea
| | - Jae-Hoon Park
- Department of Pathology, College of Medicine, Kyung Hee University, Seoul 02447, Republic of Korea
| | - Seung-Geun Yeo
- Department of Otorhinolaryngology - Head and Neck Surgery, School of Medicine, Kyung Hee University, Seoul 02447, Republic of Korea
| | - Richard G Everson
- Department of Neurosurgery, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, CA 90095, USA
| | - Young Jin Kim
- Department of Pharmacology, Institute of Health Sciences, College of Medicine, Gyeongsang National University, Jinju 52727, Republic of Korea; Department of Convergence Medical Science, College of Medicine, Gyeongsang National University, Jinju 52727, Republic of Korea
| | - Kyung-Wook Hong
- Division of Infectious Diseases, Department of Internal Medicine, Gyeongsang National University Hospital, Gyeongsang National University College of Medicine, Jinju, Republic of Korea
| | - In-Soon Roh
- Division of Foreign Animal Disease, Animal and Plant Quarantine Agency, Gimcheon-si, Gyeongsangbuk-do 39660, Republic of Korea
| | - Kwang-Soo Lyoo
- Department of Veterinary Nursing, College of Health Sciences, Wonkwang University, Iksan 54538, Republic of Korea.
| | - Yong Jun Kim
- Department of Biomedical Science, Graduate School, Kyung Hee University, Seoul 02447, Republic of Korea; Department of Pathology, College of Medicine, Kyung Hee University, Seoul 02447, Republic of Korea; Research Center, TissueIn, Inc., Seoul 06158, Republic of Korea; KHU-KIST Department of Converging Science and Technology, Kyung Hee University, Seoul 02447, Republic of Korea.
| | - Seung Pil Yun
- Department of Pharmacology, Institute of Health Sciences, College of Medicine, Gyeongsang National University, Jinju 52727, Republic of Korea; Department of Convergence Medical Science, College of Medicine, Gyeongsang National University, Jinju 52727, Republic of Korea.
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Takeda R, Tabuchi A, Nonaka Y, Kano R, Sudo M, Kano Y, Hoshino D. Cmah deficiency blunts cellular senescence in adipose tissues and improves whole-body glucose metabolism in aged mice. Geriatr Gerontol Int 2023; 23:958-964. [PMID: 37968438 DOI: 10.1111/ggi.14732] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2023] [Revised: 10/03/2023] [Accepted: 10/26/2023] [Indexed: 11/17/2023]
Abstract
AIM Cytidine monophosphate-N-acetylneuraminic acid (Neu5Ac) hydroxylase (Cmah) is an enzyme, which converts Neu5Ac to the sialic acid Neu5Gc. Neu5Gc is thought to increase inflammatory cytokines, which are, in part, produced in senescent cells of adipose tissues. Cellular senescence in adipose tissues induces whole-body aging and impaired glucose metabolism. Therefore, we hypothesized that Cmah deficiency would prevent cellular senescence in adipose tissues and impaired glucose metabolism. METHODS Wild-type (WT) and Cmah knockout (KO) mice aged 24-25 months were used. Whole-body metabolism was assessed using a metabolic gas analysis system. We measured blood glucose and insulin concentrations after oral glucose administration. The size of the lipid droplets in the liver was quantified. Markers of cellular senescence and senescence-associated secretory phenotypes were measured in adipose tissues. RESULTS Cmah KO had significantly increased VO2 and energy expenditure (P < 0.01). Unlike glucose, the insulin concentration after oral glucose administration was significantly lower in the Cmah KO group than in the WT group (P < 0.001). Lipid droplets in the liver were significantly lower in the Cmah KO group than in the WT group (P < 0.05). The markers of cellular senescence and senescence-associated secretory phenotypes in the adipose tissues were significantly lower in the Cmah KO group than in the WT group (P < 0.05). CONCLUSIONS Cmah deficiency blunted cellular senescence in adipose tissues and improved whole-body glucose metabolism. These characteristics in aged Cmah KO mice might be associated with higher energy expenditure. Geriatr Gerontol Int 2023; 23: 958-964.
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Affiliation(s)
- Reo Takeda
- Department of Engineering Science, The University of Electro-communications, Tokyo, Japan
- Japan Society for the Promotion of Science, Tokyo, Japan
| | - Ayaka Tabuchi
- Department of Engineering Science, The University of Electro-communications, Tokyo, Japan
| | - Yudai Nonaka
- Institute of Liberal Arts and Sciences, Kanazawa University, Ishikawa, Japan
| | - Ryotaro Kano
- Department of Engineering Science, The University of Electro-communications, Tokyo, Japan
- Japan Society for the Promotion of Science, Tokyo, Japan
| | - Mizuki Sudo
- Physical Fitness Research Institute, Meiji Yasuda Life Foundation of Health and Welfare, Tokyo, Japan
| | - Yutaka Kano
- Department of Engineering Science, The University of Electro-communications, Tokyo, Japan
- Center for Neuroscience and Biomedical Engineering, University of Electro-Communications, Tokyo, Japan
| | - Daisuke Hoshino
- Department of Engineering Science, The University of Electro-communications, Tokyo, Japan
- Center for Neuroscience and Biomedical Engineering, University of Electro-Communications, Tokyo, Japan
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Qiao X, Zhu L, Song R, Shang C, Guo Y. METTL3/14 and IL-17 signaling contribute to CEBPA-DT enhanced oral cancer cisplatin resistance. Oral Dis 2023; 29:942-956. [PMID: 34807506 DOI: 10.1111/odi.14083] [Citation(s) in RCA: 11] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2021] [Revised: 10/28/2021] [Accepted: 11/02/2021] [Indexed: 12/13/2022]
Abstract
OBJECTIVES Oral squamous cell carcinoma (OSCC) is the most common head and neck cancer. Chemotherapy has been recognized as an optional combination treatment, which enhance the overall survival of OSCC patients. However, the majority of patients would suffer therapeutic resistance, which led to the treatment failure and poor prognosis. MATERIALS AND METHODS To explore the mechanism of chemoresistance in OSCC, we first constructed two chemoresistant cell lines using Cal27 and HSC4. Then MeRIP sequencing together with bioinformatics analysis and a series of in vitro experiments were used to assess the possible regulation manner of RNA methylation on OSCC chemoresistance. Finally, xenograft models were constructed to confirm the relationship among OSCC chemoresistance. RESULTS METTL3/METTL14 upregulation could enhance OSCC chemoresistance. CEBPA-DT overexpression could regulate METTL3/METTL14 expression and further activate downstream BHLHB9. CEBPA-DT overexpression could inhibit the activity of IL-17 signaling, resulting in the homeostasis breakdown of immune infiltration and cytokine release. CEBPA-DT overexpression could significantly enhance chemoresistance through METTL3/METTL14/BHLHB9 in vivo, which accelerated the tumor growth. CONCLUSIONS Our results suggest that CEBPA-DT might regulate OSCC chemoresistance through BHLHB9 gene manipulated by METTL3/METTL14 as well as through IL-17 signaling inhibition, which may contribute to the assessment of potential therapeutic targets in OSCC chemoresistance.
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Affiliation(s)
- Xue Qiao
- Department of Central Laboratory, School and Hospital of Stomatology, Liaoning Provincial Key Laboratory of Oral Disease, China Medical University, Shenyang, China
- Department of Oral Biology, School and Hospital of Stomatology, Liaoning Provincial Key Laboratory of Oral Disease, China Medical University, Shenyang, China
| | - Li Zhu
- Department of Central Laboratory, School and Hospital of Stomatology, Liaoning Provincial Key Laboratory of Oral Disease, China Medical University, Shenyang, China
| | - Rongbo Song
- Department of Central Laboratory, School and Hospital of Stomatology, Liaoning Provincial Key Laboratory of Oral Disease, China Medical University, Shenyang, China
| | - Chao Shang
- Department of Neurobiology, China Medical University, Shenyang, China
| | - Yan Guo
- Department of Central Laboratory, School and Hospital of Stomatology, Liaoning Provincial Key Laboratory of Oral Disease, China Medical University, Shenyang, China
- Department of Oral Biology, School and Hospital of Stomatology, Liaoning Provincial Key Laboratory of Oral Disease, China Medical University, Shenyang, China
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7
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Wu QJ, Zhang TN, Chen HH, Yu XF, Lv JL, Liu YY, Liu YS, Zheng G, Zhao JQ, Wei YF, Guo JY, Liu FH, Chang Q, Zhang YX, Liu CG, Zhao YH. The sirtuin family in health and disease. Signal Transduct Target Ther 2022; 7:402. [PMID: 36581622 PMCID: PMC9797940 DOI: 10.1038/s41392-022-01257-8] [Citation(s) in RCA: 181] [Impact Index Per Article: 90.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2022] [Revised: 11/10/2022] [Accepted: 11/18/2022] [Indexed: 12/30/2022] Open
Abstract
Sirtuins (SIRTs) are nicotine adenine dinucleotide(+)-dependent histone deacetylases regulating critical signaling pathways in prokaryotes and eukaryotes, and are involved in numerous biological processes. Currently, seven mammalian homologs of yeast Sir2 named SIRT1 to SIRT7 have been identified. Increasing evidence has suggested the vital roles of seven members of the SIRT family in health and disease conditions. Notably, this protein family plays a variety of important roles in cellular biology such as inflammation, metabolism, oxidative stress, and apoptosis, etc., thus, it is considered a potential therapeutic target for different kinds of pathologies including cancer, cardiovascular disease, respiratory disease, and other conditions. Moreover, identification of SIRT modulators and exploring the functions of these different modulators have prompted increased efforts to discover new small molecules, which can modify SIRT activity. Furthermore, several randomized controlled trials have indicated that different interventions might affect the expression of SIRT protein in human samples, and supplementation of SIRT modulators might have diverse impact on physiological function in different participants. In this review, we introduce the history and structure of the SIRT protein family, discuss the molecular mechanisms and biological functions of seven members of the SIRT protein family, elaborate on the regulatory roles of SIRTs in human disease, summarize SIRT inhibitors and activators, and review related clinical studies.
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Affiliation(s)
- Qi-Jun Wu
- grid.412467.20000 0004 1806 3501Liaoning Key Laboratory of Precision Medical Research on Major Chronic Disease, Shengjing Hospital of China Medical University, Shenyang, China ,grid.412467.20000 0004 1806 3501Department of Clinical Epidemiology, Shengjing Hospital of China Medical University, Shenyang, China ,grid.412467.20000 0004 1806 3501Department of Obstetrics and Gynecology, Shengjing Hospital of China Medical University, Shenyang, China ,grid.412467.20000 0004 1806 3501Clinical Research Center, Shengjing Hospital of China Medical University, Shenyang, China
| | - Tie-Ning Zhang
- grid.412467.20000 0004 1806 3501Department of Pediatrics, Shengjing Hospital of China Medical University, Shenyang, China
| | - Huan-Huan Chen
- grid.412467.20000 0004 1806 3501Department of Oncology, Shengjing Hospital of China Medical University, Shenyang, China
| | - Xue-Fei Yu
- grid.412467.20000 0004 1806 3501Department of Clinical Epidemiology, Shengjing Hospital of China Medical University, Shenyang, China ,grid.412467.20000 0004 1806 3501Department of Pediatrics, Shengjing Hospital of China Medical University, Shenyang, China
| | - Jia-Le Lv
- grid.412467.20000 0004 1806 3501Liaoning Key Laboratory of Precision Medical Research on Major Chronic Disease, Shengjing Hospital of China Medical University, Shenyang, China ,grid.412467.20000 0004 1806 3501Department of Clinical Epidemiology, Shengjing Hospital of China Medical University, Shenyang, China ,grid.412467.20000 0004 1806 3501Clinical Research Center, Shengjing Hospital of China Medical University, Shenyang, China
| | - Yu-Yang Liu
- grid.412467.20000 0004 1806 3501Liaoning Key Laboratory of Precision Medical Research on Major Chronic Disease, Shengjing Hospital of China Medical University, Shenyang, China ,grid.412467.20000 0004 1806 3501Department of Clinical Epidemiology, Shengjing Hospital of China Medical University, Shenyang, China ,grid.412467.20000 0004 1806 3501Clinical Research Center, Shengjing Hospital of China Medical University, Shenyang, China
| | - Ya-Shu Liu
- grid.412467.20000 0004 1806 3501Liaoning Key Laboratory of Precision Medical Research on Major Chronic Disease, Shengjing Hospital of China Medical University, Shenyang, China ,grid.412467.20000 0004 1806 3501Department of Clinical Epidemiology, Shengjing Hospital of China Medical University, Shenyang, China ,grid.412467.20000 0004 1806 3501Clinical Research Center, Shengjing Hospital of China Medical University, Shenyang, China
| | - Gang Zheng
- grid.412467.20000 0004 1806 3501Liaoning Key Laboratory of Precision Medical Research on Major Chronic Disease, Shengjing Hospital of China Medical University, Shenyang, China ,grid.412467.20000 0004 1806 3501Department of Clinical Epidemiology, Shengjing Hospital of China Medical University, Shenyang, China ,grid.412467.20000 0004 1806 3501Clinical Research Center, Shengjing Hospital of China Medical University, Shenyang, China
| | - Jun-Qi Zhao
- grid.412467.20000 0004 1806 3501Liaoning Key Laboratory of Precision Medical Research on Major Chronic Disease, Shengjing Hospital of China Medical University, Shenyang, China ,grid.412467.20000 0004 1806 3501Department of Clinical Epidemiology, Shengjing Hospital of China Medical University, Shenyang, China ,grid.412467.20000 0004 1806 3501Clinical Research Center, Shengjing Hospital of China Medical University, Shenyang, China
| | - Yi-Fan Wei
- grid.412467.20000 0004 1806 3501Liaoning Key Laboratory of Precision Medical Research on Major Chronic Disease, Shengjing Hospital of China Medical University, Shenyang, China ,grid.412467.20000 0004 1806 3501Department of Clinical Epidemiology, Shengjing Hospital of China Medical University, Shenyang, China ,grid.412467.20000 0004 1806 3501Clinical Research Center, Shengjing Hospital of China Medical University, Shenyang, China
| | - Jing-Yi Guo
- grid.412467.20000 0004 1806 3501Liaoning Key Laboratory of Precision Medical Research on Major Chronic Disease, Shengjing Hospital of China Medical University, Shenyang, China ,grid.412467.20000 0004 1806 3501Department of Clinical Epidemiology, Shengjing Hospital of China Medical University, Shenyang, China ,grid.412467.20000 0004 1806 3501Clinical Research Center, Shengjing Hospital of China Medical University, Shenyang, China
| | - Fang-Hua Liu
- grid.412467.20000 0004 1806 3501Liaoning Key Laboratory of Precision Medical Research on Major Chronic Disease, Shengjing Hospital of China Medical University, Shenyang, China ,grid.412467.20000 0004 1806 3501Department of Clinical Epidemiology, Shengjing Hospital of China Medical University, Shenyang, China ,grid.412467.20000 0004 1806 3501Clinical Research Center, Shengjing Hospital of China Medical University, Shenyang, China
| | - Qing Chang
- grid.412467.20000 0004 1806 3501Liaoning Key Laboratory of Precision Medical Research on Major Chronic Disease, Shengjing Hospital of China Medical University, Shenyang, China ,grid.412467.20000 0004 1806 3501Department of Clinical Epidemiology, Shengjing Hospital of China Medical University, Shenyang, China ,grid.412467.20000 0004 1806 3501Clinical Research Center, Shengjing Hospital of China Medical University, Shenyang, China
| | - Yi-Xiao Zhang
- grid.412467.20000 0004 1806 3501Department of Urology, Shengjing Hospital of China Medical University, Shenyang, China
| | - Cai-Gang Liu
- grid.412467.20000 0004 1806 3501Department of Cancer, Breast Cancer Center, Shengjing Hospital of China Medical University, Shenyang, China
| | - Yu-Hong Zhao
- grid.412467.20000 0004 1806 3501Liaoning Key Laboratory of Precision Medical Research on Major Chronic Disease, Shengjing Hospital of China Medical University, Shenyang, China ,grid.412467.20000 0004 1806 3501Department of Clinical Epidemiology, Shengjing Hospital of China Medical University, Shenyang, China ,grid.412467.20000 0004 1806 3501Clinical Research Center, Shengjing Hospital of China Medical University, Shenyang, China
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8
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Khan H, Kaur Grewal A, Gurjeet Singh T. Mitochondrial dynamics related neurovascular approaches in cerebral ischemic injury. Mitochondrion 2022; 66:54-66. [DOI: 10.1016/j.mito.2022.08.001] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2022] [Revised: 07/14/2022] [Accepted: 08/02/2022] [Indexed: 12/30/2022]
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9
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Liang S, Dong S, Liu W, Wang M, Tian S, Ai Y, Wang H. Accumulated ROS Activates HIF-1α-Induced Glycolysis and Exerts a Protective Effect on Sensory Hair Cells Against Noise-Induced Damage. Front Mol Biosci 2022; 8:806650. [PMID: 35096971 PMCID: PMC8790562 DOI: 10.3389/fmolb.2021.806650] [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: 11/01/2021] [Accepted: 12/14/2021] [Indexed: 12/19/2022] Open
Abstract
Noise exposure causes noise-induced hearing loss (NIHL). NIHL exhibits loss of inner ear sensory hair cells and is often irreparable. Although oxidative stress is involved in hearing loss, the complex mechanisms involved in NIHL are unclear. Hypoxia-inducible factor 1α (HIF-1α) has been suggested to be essential for protecting sensory hair cells. Additionally, it has been shown that ROS is involved in modulating the stability of HIF-1α. To investigate the NIHL pathogenesis, we established a tert-butyl hydroperoxide (t-BHP)-induced oxidative stress damage model in hair-like HEI-OC1 cells and an NIHL model in C57BL/6 mice. Protein and mRNA expression were determined, and biochemical parameters including reactive oxygen species (ROS) accumulation, glucose uptake, adenosine triphosphat (ATP) production, and mitochondrial content were evaluated. In HEI-OC1 cells, t-BHP induced ROS accumulation and reduced mitochondrial content and oxygen consumption, but the ATP level was unaffected. Additionally, there was increased glucose uptake and lactate release along with elevated expression of HIF-1α, glucose transporter 1, and several glycolytic enzymes. Consistently, noise trauma induced oxidative stress and the expression of HIF-1α and glycolytic enzymes in mice. Thus, we concluded that ROS induced HIF-1α expression, which promoted glycolysis, suggesting a metabolic shift maintained the ATP level to attenuate hair cell damage in NIHL.
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Affiliation(s)
- Shuo Liang
- Department of Otolaryngology-Head and Neck Surgery, Shandong Provincial ENT Hospital, Cheeloo College of Medicine, Shandong University, Jinan, China
| | - Shuohui Dong
- Department of General Surgery, Shandong Qianfoshan Hospital, Cheeloo College of Medicine, Shandong University, Jinan, China
| | - Wenwen Liu
- Department of Otolaryngology-Head and Neck Surgery, Shandong Provincial ENT Hospital, Cheeloo College of Medicine, Shandong University, Jinan, China
| | - Man Wang
- Department of Otolaryngology-Head and Neck Surgery, Shandong Provincial ENT Hospital, Cheeloo College of Medicine, Shandong University, Jinan, China
| | - Shanshan Tian
- Department of Otolaryngology-Head and Neck Surgery, Shandong Provincial ENT Hospital, Cheeloo College of Medicine, Shandong University, Jinan, China
| | - Yu Ai
- Department of Otolaryngology-Head and Neck Surgery, Shandong Provincial ENT Hospital, Cheeloo College of Medicine, Shandong University, Jinan, China
- *Correspondence: Yu Ai, ; Haibo Wang,
| | - Haibo Wang
- Department of Otolaryngology-Head and Neck Surgery, Shandong Provincial ENT Hospital, Cheeloo College of Medicine, Shandong University, Jinan, China
- *Correspondence: Yu Ai, ; Haibo Wang,
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10
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Li Q, Zang Y, Sun Z, Zhang W, Liu H. Long noncoding RNA Gm44593 attenuates oxidative stress from age-related hearing loss by regulating miR-29b/WNK1. Bioengineered 2021; 13:573-582. [PMID: 34967279 PMCID: PMC8805810 DOI: 10.1080/21655979.2021.2012062] [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] [Indexed: 10/25/2022] Open
Abstract
Long noncoding RNA has been reported to play important role in various disease. However, the function of lncRNA in age-related hearing loss still unclear. The aim of our study is to investigate the function and mechanism of lncRNA Gm44593 in AHL. ATP content, JC-1 assay, mitochondrial content, cell death rates and dual-luciferase reporter assay were performed to assess the function of lncRNA Gm44593 in HEI-OC1 cells. The expression of lncRNA Gm44593 was significantly upregulated upon H2O2 and starvation treatment. Overexpression of lncRNA Gm44593 manifestly reduced the cell death rates. The ATP content, mtDNA content and mitochondrial membrane potential were alleviated upon overexpression of lncRNA Gm44593. We also proved that miR-29b is the direct target of lncRNA Gm44593. Overexpression of miR-29b completely restored the effect induced by lncRNA Gm44593. In addition, we provided evidences that WNK1 is the direct target of miR-29b. Our research uncovers a potential role of lncRNA Gm44593 in age-related hearing loss. We provide new insights into potential therapeutic targets for the amelioration of age-related hearing loss.
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Affiliation(s)
- Qian Li
- Otolaryngology Head and Neck Surgery, People's Hospital of Zhengzhou University, Henan Provincial People's Hospital, Zhengzhou, Henan Province, China
| | - Yanzi Zang
- Otolaryngology Head and Neck Surgery, People's Hospital of Zhengzhou University, Henan Provincial People's Hospital, Zhengzhou, Henan Province, China
| | - Zhanwei Sun
- Otolaryngology Head and Neck Surgery, People's Hospital of Zhengzhou University, Henan Provincial People's Hospital, Zhengzhou, Henan Province, China
| | - Wenqi Zhang
- Otolaryngology Head and Neck Surgery, People's Hospital of Zhengzhou University, Henan Provincial People's Hospital, Zhengzhou, Henan Province, China
| | - Hongjian Liu
- Otolaryngology Head and Neck Surgery, People's Hospital of Zhengzhou University, Henan Provincial People's Hospital, Zhengzhou, Henan Province, China
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11
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Liu W, Johansson Å, Rask-Andersen H, Rask-Andersen M. A combined genome-wide association and molecular study of age-related hearing loss in H. sapiens. BMC Med 2021; 19:302. [PMID: 34847940 PMCID: PMC8638543 DOI: 10.1186/s12916-021-02169-0] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/11/2021] [Accepted: 10/21/2021] [Indexed: 02/08/2023] Open
Abstract
BACKGROUND Sensorineural hearing loss is one of the most common sensory deficiencies. However, the molecular contribution to age-related hearing loss is not fully elucidated. METHODS We performed genome-wide association studies (GWAS) for hearing loss-related traits in the UK Biobank (N = 362,396) and selected a high confidence set of ten hearing-associated gene products for staining in human cochlear samples: EYA4, LMX1A, PTK2/FAK, UBE3B, MMP2, SYNJ2, GRM5, TRIOBP, LMO-7, and NOX4. RESULTS All proteins were found to be expressed in human cochlear structures. Our findings illustrate cochlear structures that mediate mechano-electric transduction of auditory stimuli, neuronal conductance, and neuronal plasticity to be involved in age-related hearing loss. CONCLUSIONS Our results suggest common genetic variation to influence structural resilience to damage as well as cochlear recovery after trauma, which protect against accumulated damage to cochlear structures and the development of hearing loss over time.
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Affiliation(s)
- Wei Liu
- Department of Surgical Sciences, Section of Otorhinolaryngology and Head & Neck Surgery, Uppsala University, SE-751 85, Uppsala, Sweden
| | - Åsa Johansson
- Department of Immunology, Genetics and Pathology, Science for Life Laboratory, Uppsala University, Uppsala, Sweden
| | - Helge Rask-Andersen
- Department of Surgical Sciences, Section of Otorhinolaryngology and Head & Neck Surgery, Uppsala University, SE-751 85, Uppsala, Sweden.
| | - Mathias Rask-Andersen
- Department of Immunology, Genetics and Pathology, Science for Life Laboratory, Uppsala University, Uppsala, Sweden.
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12
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Silaghi CN, Farcaș M, Crăciun AM. Sirtuin 3 (SIRT3) Pathways in Age-Related Cardiovascular and Neurodegenerative Diseases. Biomedicines 2021; 9:biomedicines9111574. [PMID: 34829803 PMCID: PMC8615405 DOI: 10.3390/biomedicines9111574] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2021] [Revised: 10/22/2021] [Accepted: 10/27/2021] [Indexed: 01/08/2023] Open
Abstract
Age-associated cardiovascular and neurodegenerative diseases lead to high morbidity and mortality around the world. Sirtuins are vital enzymes for metabolic adaptation and provide protective effects against a wide spectrum of pathologies. Among sirtuins, mitochondrial sirtuin 3 (SIRT3) is an essential player in preserving the habitual metabolic profile. SIRT3 activity declines as a result of aging-induced changes in cellular metabolism, leading to increased susceptibility to endothelial dysfunction, hypertension, heart failure and neurodegenerative diseases. Stimulating SIRT3 activity via lifestyle, pharmacological or genetic interventions could protect against a plethora of pathologies and could improve health and lifespan. Thus, understanding how SIRT3 operates and how its protective effects could be amplified, will aid in treating age-associated diseases and ultimately, in enhancing the quality of life in elders.
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13
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Choe HM, Luo ZB, Kang JD, Oh MJ, An HJ, Yin XJ. Pathological features in 'humanized' neonatal pig. Anim Biotechnol 2021; 34:301-309. [PMID: 34392816 DOI: 10.1080/10495398.2021.1962896] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
Cytidine monophosphate-Nacetylneuraminic acid (Neu5Ac) hydroxylase (CMAH) and glycoprotein, alpha1, 3-galactosyltransferase (GGTA1) double knockout (DKO) pig models were produced to reduce immune reaction for xenotransplantation. However, the role of Neu5Gc and α-Gal in pigs has not been fully elucidated and it is necessary to consider the after-effect of inactivation of GGTA1 and CMAH in pigs. Hematological profiles of DKO pigs were analyzed through complete blood count (CBC). Histology of liver and spleen of DKO were investigated, and lectin blotting and mass spectrometry (MS) were performed to explore glycosylation changes in red blood cell (RBC) membranes of DKO pigs. DKO pigs showed common clinical signs such as weakness (100%), dyspnea (90%) and constipation (65%). DKO pigs revealed a significant decrease in RBC, hemoglobin (HGB) and hematocrit (HGB), and an increase in white blood cell (WBC), lymphocyte (LYM), monocyte (MON), and erythrocyte mean corpuscular volume (MCV). DKO piglets showed swollen liver and spleen, and exhibited raised deposition of hemosiderin and severe bleeding. Lectin assay and MS proved variations in glycosylation on RBC membranes. GGTA1/CMAH DKO pigs developed pathological features which are similar to anemic symptoms, and the variations in glycosylation on RBC membranes of DKO pigs may be attributed to the pathologies observed.
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Affiliation(s)
- Hak Myong Choe
- Jilin Provincial Key Laboratory of Transgenic Animal and Embryo Engineering, Yanbian University, Yanji, China
| | - Zhao-Bo Luo
- Jilin Provincial Key Laboratory of Transgenic Animal and Embryo Engineering, Yanbian University, Yanji, China
| | - Jin-Dan Kang
- Jilin Provincial Key Laboratory of Transgenic Animal and Embryo Engineering, Yanbian University, Yanji, China
| | - Myung Jin Oh
- Graduate School of Analytical Science and Technology, Chungnam National University, Daejeon, Korea
| | - Hyun Joo An
- Graduate School of Analytical Science and Technology, Chungnam National University, Daejeon, Korea
| | - Xi-Jun Yin
- Jilin Provincial Key Laboratory of Transgenic Animal and Embryo Engineering, Yanbian University, Yanji, China
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14
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Serum Antibodies to N-Glycolylneuraminic Acid Are Elevated in Duchenne Muscular Dystrophy and Correlate with Increased Disease Pathology in Cmah -/-mdx Mice. THE AMERICAN JOURNAL OF PATHOLOGY 2021; 191:1474-1486. [PMID: 34294193 DOI: 10.1016/j.ajpath.2021.04.015] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/11/2020] [Revised: 04/01/2021] [Accepted: 04/26/2021] [Indexed: 10/20/2022]
Abstract
Humans cannot synthesize the common mammalian sialic acid N-glycolylneuraminic acid (Neu5Gc) because of an inactivating deletion in the cytidine-5'-monophospho-(CMP)-N-acetylneuraminic acid hydroxylase (CMAH) gene responsible for its synthesis. Human Neu5Gc deficiency can lead to development of anti-Neu5Gc serum antibodies, the levels of which can be affected by Neu5Gc-containing diets and by disease. Metabolic incorporation of dietary Neu5Gc into human tissues in the face of circulating antibodies against Neu5Gc-bearing glycans is thought to exacerbate inflammation-driven diseases like cancer and atherosclerosis. Probing of sera with sialoglycan arrays indicated that patients with Duchenne muscular dystrophy (DMD) had a threefold increase in overall anti-Neu5Gc antibody titer compared with age-matched controls. These antibodies recognized a broad spectrum of Neu5Gc-containing glycans. Human-like inactivation of the Cmah gene in mice is known to modulate severity in a variety of mouse models of human disease, including the X chromosome-linked muscular dystrophy (mdx) model for DMD. Cmah-/-mdx mice can be induced to develop anti-Neu5Gc-glycan antibodies as humans do. The presence of anti-Neu5Gc antibodies, in concert with induced Neu5Gc expression, correlated with increased severity of disease pathology in Cmah-/-mdx mice, including increased muscle fibrosis, expression of inflammatory markers in the heart, and decreased survival. These studies suggest that patients with DMD who harbor anti-Neu5Gc serum antibodies might exacerbate disease severity when they ingest Neu5Gc-rich foods, like red meats.
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15
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Yang S, Ma N, Wu X, Ni H, Gao S, Sun L, Zhou P, Tala, Ran J, Zhou J, Liu M, Li D. CYLD deficiency causes auditory neuropathy due to reduced neurite outgrowth. J Clin Lab Anal 2021; 35:e23783. [PMID: 33934395 PMCID: PMC8183908 DOI: 10.1002/jcla.23783] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2021] [Revised: 03/19/2021] [Accepted: 03/28/2021] [Indexed: 12/23/2022] Open
Abstract
BACKGROUND Auditory neuropathy is a cause of hearing loss that has been studied in a number of animal models. Signal transmission from hair cells to spiral ganglion neurons plays an important role in normal hearing. CYLD is a microtubule-binding protein, and deubiquitinase involved in the regulation of various cellular processes. In this study, we used Cyld knockout (KO) mice and nerve cell lines to examine whether CYLD is associated with auditory neuropathy. METHODS Hearing of Cyld KO mice was studied using the TDT RZ6 auditory physiology workstation. The expression and localization of CYLD in mouse cochlea and cell lines were examined by RT-PCR, immunoblotting, and immunofluorescence. CYLD expression was knocked down in SH-SY5Y cells by shRNAs and in PC12 and N2A cells by siRNAs. Nerve growth factor and retinoic acid were used to induce neurite outgrowth, and the occurrence and length of neurites were statistically analyzed between knockdown and control groups. RESULTS Cyld KO mice had mild hearing impairment. Moreover, CYLD was widely expressed in mouse cochlear tissues and different nerve cell lines. Knocking down CYLD significantly reduced the length and proportion of neurites growing from nerve cells. CONCLUSIONS The abnormal hearing of Cyld KO mice might be caused by a decrease in the length and number of neurites growing from auditory nerve cells in the cochlea, suggesting that CYLD is a key protein affecting hearing.
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Affiliation(s)
- Song Yang
- State Key Laboratory of Medicinal Chemical BiologyCollege of Life SciencesNankai UniversityTianjinChina
| | - Nan Ma
- State Key Laboratory of Medicinal Chemical BiologyCollege of Life SciencesNankai UniversityTianjinChina
| | - Xuemei Wu
- State Key Laboratory of Medicinal Chemical BiologyCollege of Life SciencesNankai UniversityTianjinChina
| | - Hua Ni
- State Key Laboratory of Medicinal Chemical BiologyCollege of Life SciencesNankai UniversityTianjinChina
| | - Siqi Gao
- State Key Laboratory of Medicinal Chemical BiologyCollege of Life SciencesNankai UniversityTianjinChina
| | - Lei Sun
- State Key Laboratory of Medicinal Chemical BiologyCollege of Life SciencesNankai UniversityTianjinChina
| | - Peng Zhou
- Shandong Provincial Key Laboratory of Animal Resistance BiologyCollaborative Innovation Center of Cell Biology in Universities of ShandongInstitute of Biomedical SciencesCollege of Life SciencesShandong Normal UniversityJinanChina
| | - Tala
- State Key Laboratory of Medicinal Chemical BiologyCollege of Life SciencesNankai UniversityTianjinChina
| | - Jie Ran
- Shandong Provincial Key Laboratory of Animal Resistance BiologyCollaborative Innovation Center of Cell Biology in Universities of ShandongInstitute of Biomedical SciencesCollege of Life SciencesShandong Normal UniversityJinanChina
| | - Jun Zhou
- State Key Laboratory of Medicinal Chemical BiologyCollege of Life SciencesNankai UniversityTianjinChina
- Shandong Provincial Key Laboratory of Animal Resistance BiologyCollaborative Innovation Center of Cell Biology in Universities of ShandongInstitute of Biomedical SciencesCollege of Life SciencesShandong Normal UniversityJinanChina
| | - Min Liu
- Shandong Provincial Key Laboratory of Animal Resistance BiologyCollaborative Innovation Center of Cell Biology in Universities of ShandongInstitute of Biomedical SciencesCollege of Life SciencesShandong Normal UniversityJinanChina
| | - Dengwen Li
- State Key Laboratory of Medicinal Chemical BiologyCollege of Life SciencesNankai UniversityTianjinChina
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16
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Kim YJ, Choo OS, Lee JS, Jang JH, Woo HG, Choung YH. BCL2 Interacting Protein 3-like/NIX-mediated Mitophagy Plays an Important Role in the Process of Age-related Hearing Loss. Neuroscience 2020; 455:39-51. [PMID: 33346118 DOI: 10.1016/j.neuroscience.2020.12.005] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2020] [Revised: 12/03/2020] [Accepted: 12/05/2020] [Indexed: 01/06/2023]
Abstract
Clearance of dysfunctional mitochondria via mitophagy is essential for cell survival and cochlear functions. However, it is not clear which genes are significantly involved in this process. Here, we investigated the changes in mitophagy and mitophagy-associated genes in mouse auditory cells to determine a possible correlation between mitophagy and age-related hearing loss (ARHL). Here, we show that most transcripts associated with mitophagy were downregulated in an age-dependent manner. We identified one significant differentially expressed gene associated with mitophagy, BCL2 interacting protein 3-like (BNIP3L)/NIX. Mitophagy-inhibited cells with BNIP3L/NIX knockdown showed hyperresponsiveness to oxidative stress resulting in cell senescence with increased levels of TOMM20 and LC3B. Overexpression of BNIP3L/NIX promotes the degradation of TOMM20 and LC3B during premature cell senescence. In conclusion, BNIP3L/NIX may play an important role in mitochondria degradation maintaining cochlear cell homeostasis during the aging process of hearing.
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Affiliation(s)
- Yeon Ju Kim
- Department of Otolaryngology, Ajou University School of Medicine, Suwon, Republic of Korea
| | - Oak-Sung Choo
- Department of Otolaryngology, Ajou University School of Medicine, Suwon, Republic of Korea; Department of Medical Sciences, Ajou University Graduate School of Medicine, Suwon, Republic of Korea
| | - Jin-Sol Lee
- Department of Otolaryngology, Ajou University School of Medicine, Suwon, Republic of Korea; Department of Biomedical Sciences, BK21 Plus Research Center for Biomedical Sciences, Ajou University Graduate School of Medicine, Suwon, Republic of Korea
| | - Jeong Hun Jang
- Department of Otolaryngology, Ajou University School of Medicine, Suwon, Republic of Korea
| | - Hyun Goo Woo
- Department of Biomedical Sciences, BK21 Plus Research Center for Biomedical Sciences, Ajou University Graduate School of Medicine, Suwon, Republic of Korea; Department of Physiology, Ajou University School of Medicine, Suwon, Republic of Korea
| | - Yun-Hoon Choung
- Department of Otolaryngology, Ajou University School of Medicine, Suwon, Republic of Korea; Department of Medical Sciences, Ajou University Graduate School of Medicine, Suwon, Republic of Korea; Department of Biomedical Sciences, BK21 Plus Research Center for Biomedical Sciences, Ajou University Graduate School of Medicine, Suwon, Republic of Korea.
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17
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Mitochondrial Dysfunction and Therapeutic Targets in Auditory Neuropathy. Neural Plast 2020; 2020:8843485. [PMID: 32908487 PMCID: PMC7474759 DOI: 10.1155/2020/8843485] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2020] [Revised: 05/27/2020] [Accepted: 07/11/2020] [Indexed: 11/30/2022] Open
Abstract
Sensorineural hearing loss (SNHL) becomes an inevitable worldwide public health issue, and deafness treatment is urgently imperative; yet their current curative therapy is limited. Auditory neuropathies (AN) were proved to play a substantial role in SNHL recently, and spiral ganglion neuron (SGN) dysfunction is a dominant pathogenesis of AN. Auditory pathway is a high energy consumption system, and SGNs required sufficient mitochondria. Mitochondria are known treatment target of SNHL, but mitochondrion mechanism and pathology in SGNs are not valued. Mitochondrial dysfunction and pharmacological therapy were studied in neurodegeneration, providing new insights in mitochondrion-targeted treatment of AN. In this review, we summarized mitochondrial biological functions related to SGNs and discussed interaction between mitochondrial dysfunction and AN, as well as existing mitochondrion treatment for SNHL. Pharmaceutical exploration to protect mitochondrion dysfunction is a feasible and effective therapeutics for AN.
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18
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Zhang J, Zhang W, Zhang Q. Ectopic expression of ROR1 prevents cochlear hair cell loss in guinea pigs with noise-induced hearing loss. J Cell Mol Med 2020; 24:9101-9113. [PMID: 34008309 PMCID: PMC7417695 DOI: 10.1111/jcmm.15545] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2019] [Revised: 05/25/2020] [Accepted: 06/03/2020] [Indexed: 11/28/2022] Open
Abstract
Noise-induced hearing loss (NIHL) is one of the most frequent disabilities in industrialized countries. Evidence shows that hair cell loss in the auditory end organ is responsible for the majority of various ear pathological conditions. The functional roles of the receptor tyrosine kinase ROR1 have been underscored in various tumours. In this study, we evaluated the ability of ROR1 to influence cochlear hair cell loss of guinea pigs with NIHL. The NIHL model was developed in guinea pigs, with subsequent measurement of the auditory brainstem response (ABR). Gain-of-function experiments were employed to explore the role of ROR1 in NIHL. The interaction between ROR1 and Wnt5a and their functions in the cochlear hair cell loss were further analysed in response to alteration of ROR1 and Wnt5a. Guinea pigs with NIHL demonstrated elevated ABR threshold and down-regulated ROR1, Wnt5a and NF-κB p65. The up-regulation of ROR1 was shown to decrease the cochlear hair cell loss and the expression of pro-apoptotic gene (Bax, p53) in guinea pig cochlea, but promoted the expression of anti-apoptotic gene (Bcl-2) and the fluorescence intensity of cleaved-caspase-3. ROR1 interacted with Wnt5a to activate the NF-κB signalling pathway through inducing phosphorylation and translocation of p65. Furthermore, Wnt5a overexpression decreased the cochlear hair cell loss. Collectively, this study suggested the protection of overexpression of ROR1 against cochlear hair cell loss in guinea pigs with NIHL via the Wnt5a-dependent NF-κB signalling pathway.
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Affiliation(s)
- Jun Zhang
- Department of Children’s RehabilitationLinyi People’s HospitalLinyiChina
| | - Wei Zhang
- Electrocardiogram RoomLinyi People’s HospitalLinyiChina
| | - Qinliang Zhang
- Department of Children’s RehabilitationLinyi People’s HospitalLinyiChina
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19
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Mitochondrial Damage and Necroptosis in Aging Cochlea. Int J Mol Sci 2020; 21:ijms21072505. [PMID: 32260310 PMCID: PMC7177801 DOI: 10.3390/ijms21072505] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2020] [Revised: 04/02/2020] [Accepted: 04/02/2020] [Indexed: 12/14/2022] Open
Abstract
Age-related hearing loss (ARHL) is an irreversible, progressive neurodegenerative disorder and is presently untreatable. Previous studies using animal models have suggested mitochondrial damage and programmed cell death to be involved with ARHL. Thus, we further investigated the pathophysiologic role of mitochondria and necroptosis in aged C57BL/6J male mice. Aged mice (20 months old) exhibited a significant loss of hearing, number of hair cells, neuronal fibers, and synaptic ribbons compared to young mice. Ultrastructural analysis of aged cochleae revealed damaged mitochondria with absent or disorganized cristae. Aged mice also showed significant decrease in cochlear blood flow, and exhibited increase in gene expression of proinflammatory cytokines (IL-1β, IL-6, and TNF-α), receptor-interacting serine/threonine-protein kinase 1 and 3 (RIPK1 and RIPK3) and the pseudokinase mixed-lineage kinase domain-like (MLKL). Immunofluorescence (IF) assays of cytochrome C oxidase I (COX1) confirmed mitochondrial dysfunction in aged cochleae, which correlated with the degree of mitochondrial morphological damage. IF assays also revealed localization and increased expression of RIPK3 in sensorineural tissues that underwent significant necroptosis (inner and outer hair cells and stria vascularis). Together, our data shows that the aging cochlea exhibits damaged mitochondria, enhanced synthesis of proinflammatory cytokines, and provides new evidence of necroptosis in the aging cochlea in in vivo.
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Marozzo R, Pegoraro V, Dipietro L, Ralli M, Angelini C, Di Stadio A. Can miR-34a be suitable for monitoring sensorineural hearing loss in patients with mitochondrial disease? A case series. Int J Neurosci 2020; 130:1272-1277. [PMID: 32079439 DOI: 10.1080/00207454.2020.1731505] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Purpose: We aimed at evaluating the feasibility of using MicroRNA (miR)-34a and miR-29b to detect inner ear damage in patients with mitochondrial disease (MD) and sensorineural hearing loss (SNHL).Material and Methods: Three patients with MD and SNHL and seven healthy control subjects were included in this case series. MD patients underwent pure tone audiometry (PTA), distortion product otoacoustic emission (DPOAE) and auditory brain response tests to investigate the specific cochlear and retrocochlear functions; control patients underwent PTA. MiR-34a and miR-29b were extracted from blood in all subjects included in the study. The expression of miR-34a and miR-29b in MD patients and healthy controls were statistically compared, then the expression of these two miRs was compared with DPOAE values.Results: In MD patients, miR-34a was significantly up-regulated compared to healthy controls; miR-34a and DPOAEs were negatively correlated. Conversely, miR-29b was up-regulated only in the youngest patient who suffered from the mildest forms of MD and SNHL, and negatively correlated with DPOAEs.Conclusion: In MD patients, miR-34a and miR-29b might be a marker of inner ear damage and early damage, respectively. Additional studies on larger samples are necessary to confirm these preliminary results.
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Affiliation(s)
| | | | | | - Massimo Ralli
- Department of Sense Organs, Sapienza University of Rome,Rome,Italy
| | | | - Arianna Di Stadio
- Otolaryngology Department, University of Perugia, Perugia, Italy.,Neuroinflammation Laboratory, UCL Queen Square Neurology, London, UK
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21
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Zhang Y, Li W, He Z, Wang Y, Shao B, Cheng C, Zhang S, Tang M, Qian X, Kong W, Wang H, Chai R, Gao X. Pre-treatment With Fasudil Prevents Neomycin-Induced Hair Cell Damage by Reducing the Accumulation of Reactive Oxygen Species. Front Mol Neurosci 2019; 12:264. [PMID: 31780893 PMCID: PMC6851027 DOI: 10.3389/fnmol.2019.00264] [Citation(s) in RCA: 52] [Impact Index Per Article: 10.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2019] [Accepted: 10/16/2019] [Indexed: 12/17/2022] Open
Abstract
Ototoxic drug-induced hair cell (HC) damage is one of the main causes of sensorineural hearing loss, which is one of the most common sensory disorders in humans. Aminoglycoside antibiotics are common ototoxic drugs, and these can cause the accumulation of intracellular oxygen free radicals and lead to apoptosis in HCs. Fasudil is a Rho kinase inhibitor and vasodilator that has been widely used in the clinic and has been shown to have neuroprotective effects. However, the possible application of fasudil in protecting against aminoglycoside-induced HC loss and hearing loss has not been investigated. In this study, we investigated the ability of fasudil to protect against neomycin-induced HC loss both in vitro and in vivo. We found that fasudil significantly reduced the HC loss in cochlear whole-organ explant cultures and reduced the cell death of auditory HEI-OC1 cells after neomycin exposure in vitro. Moreover, we found that fasudil significantly prevented the HC loss and hearing loss of mice in the in vivo neomycin damage model. Furthermore, we found that fasudil could significantly inhibit the Rho signaling pathway in the auditory HEI-OC1 cells after neomycin exposure, thus further reducing the neomycin-induced accumulation of reactive oxygen species and subsequent apoptosis in HEI-OC1 cells. This study suggests that fasudil might contribute to the increased viability of HCs after neomycin exposure by inhibition of the Rho signaling pathway and suggests a new therapeutic target for the prevention of aminoglycoside-induced HC loss and hearing loss.
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Affiliation(s)
- Yanqiu Zhang
- Jiangsu Provincial Key Medical Discipline (Laboratory), Department of Otolaryngology Head and Neck Surgery, Nanjing Drum Tower Hospital Clinical College of Nanjing Medical University, Nanjing, China
- MOE Key Laboratory for Developmental Genes and Human Disease, Institute of Life Sciences, Jiangsu Province High-Tech Key Laboratory for Bio-Medical Research, Southeast University, Nanjing, China
- Research Institute of Otolaryngology, Nanjing, China
- Department of Otolaryngology Head and Neck Surgery, Xuzhou Cancer Hospital, Xuzhou, China
| | - Wei Li
- Jiangsu Provincial Key Medical Discipline (Laboratory), Department of Otolaryngology Head and Neck Surgery, Nanjing Drum Tower Hospital Clinical College of Nanjing Medical University, Nanjing, China
- MOE Key Laboratory for Developmental Genes and Human Disease, Institute of Life Sciences, Jiangsu Province High-Tech Key Laboratory for Bio-Medical Research, Southeast University, Nanjing, China
- Research Institute of Otolaryngology, Nanjing, China
- Department of Otolaryngology Head and Neck Surgery, The Affiliated Hospital of Xuzhou Medical University, Xuzhou, China
| | - Zuhong He
- MOE Key Laboratory for Developmental Genes and Human Disease, Institute of Life Sciences, Jiangsu Province High-Tech Key Laboratory for Bio-Medical Research, Southeast University, Nanjing, China
- Department of Otorhinolaryngology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Yunfeng Wang
- Key Laboratory of Hearing Medicine of NHFPC, State Key Laboratory of Medical Neurobiology, ENT Institute and Otorhinolaryngology Department of Affiliated Eye and ENT Hospital, Shanghai Engineering Research Centre of Cochlear Implant, Fudan University, Shanghai, China
- Shanghai Fenyang Vision & Audition Center, Shanghai, China
| | - Buwei Shao
- MOE Key Laboratory for Developmental Genes and Human Disease, Institute of Life Sciences, Jiangsu Province High-Tech Key Laboratory for Bio-Medical Research, Southeast University, Nanjing, China
| | - Cheng Cheng
- Jiangsu Provincial Key Medical Discipline (Laboratory), Department of Otolaryngology Head and Neck Surgery, Nanjing Drum Tower Hospital Clinical College of Nanjing Medical University, Nanjing, China
- MOE Key Laboratory for Developmental Genes and Human Disease, Institute of Life Sciences, Jiangsu Province High-Tech Key Laboratory for Bio-Medical Research, Southeast University, Nanjing, China
- Research Institute of Otolaryngology, Nanjing, China
| | - Shasha Zhang
- MOE Key Laboratory for Developmental Genes and Human Disease, Institute of Life Sciences, Jiangsu Province High-Tech Key Laboratory for Bio-Medical Research, Southeast University, Nanjing, China
| | - Mingliang Tang
- MOE Key Laboratory for Developmental Genes and Human Disease, Institute of Life Sciences, Jiangsu Province High-Tech Key Laboratory for Bio-Medical Research, Southeast University, Nanjing, China
| | - Xiaoyun Qian
- Jiangsu Provincial Key Medical Discipline (Laboratory), Department of Otolaryngology Head and Neck Surgery, Nanjing Drum Tower Hospital Clinical College of Nanjing Medical University, Nanjing, China
| | - Weijia Kong
- Department of Otorhinolaryngology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Hui Wang
- Department of Otolaryngology Head and Neck Surgery, Shanghai Jiao Tong University Affiliated Sixth People’s Hospital, Shanghai, China
| | - Renjie Chai
- MOE Key Laboratory for Developmental Genes and Human Disease, Institute of Life Sciences, Jiangsu Province High-Tech Key Laboratory for Bio-Medical Research, Southeast University, Nanjing, China
- Research Institute of Otolaryngology, Nanjing, China
- Key Laboratory of Hearing Medicine of NHFPC, State Key Laboratory of Medical Neurobiology, ENT Institute and Otorhinolaryngology Department of Affiliated Eye and ENT Hospital, Shanghai Engineering Research Centre of Cochlear Implant, Fudan University, Shanghai, China
- Co-Innovation Center of Neuroregeneration, Nantong University, Nantong, China
- Institute for Stem Cell and Regeneration, Chinese Academy of Science, Beijing, China
- Beijing Key Laboratory of Neural Regeneration and Repair, Capital Medical University, Beijing, China
| | - Xia Gao
- Jiangsu Provincial Key Medical Discipline (Laboratory), Department of Otolaryngology Head and Neck Surgery, Nanjing Drum Tower Hospital Clinical College of Nanjing Medical University, Nanjing, China
- Research Institute of Otolaryngology, Nanjing, China
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Kim H, Cao W, Oh G, Lee S, Shen A, Khadka D, Lee S, Sharma S, Kim SY, Choe S, Kwak TH, Kim J, Park R, So H. Augmentation of cellular NAD + by NQO1 enzymatic action improves age-related hearing impairment. Aging Cell 2019; 18:e13016. [PMID: 31353811 PMCID: PMC6718544 DOI: 10.1111/acel.13016] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2019] [Revised: 06/09/2019] [Accepted: 07/07/2019] [Indexed: 12/20/2022] Open
Abstract
Age-related hearing loss (ARHL) is a major neurodegenerative disorder and the leading cause of communication deficit in the elderly population, which remains largely untreated. The development of ARHL is a multifactorial event that includes both intrinsic and extrinsic factors. Recent studies suggest that NAD+ /NADH ratio may play a critical role in cellular senescence by regulating sirtuins, PARP-1, and PGC-1α. Nonetheless, the beneficial effect of direct modulation of cellular NAD+ levels on aging and age-related diseases has not been studied, and the underlying mechanisms remain obscure. Herein, we investigated the effect of β-lapachone (β-lap), a known plant-derived metabolite that modulates cellular NAD+ by conversion of NADH to NAD+ via the enzymatic action of NADH: quinone oxidoreductase 1 (NQO1) on ARHL in C57BL/6 mice. We elucidated that the reduction of cellular NAD+ during the aging process was an important contributor for ARHL; it facilitated oxidative stress and pro-inflammatory responses in the cochlear tissue through regulating sirtuins that alter various signaling pathways, such as NF-κB, p53, and IDH2. However, augmentation of NAD+ by β-lap effectively prevented ARHL and accompanying deleterious effects through reducing inflammation and oxidative stress, sustaining mitochondrial function, and promoting mitochondrial biogenesis in rodents. These results suggest that direct regulation of cellular NAD+ levels by pharmacological agents may be a tangible therapeutic option for treating various age-related diseases, including ARHL.
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Affiliation(s)
- Hyung‐Jin Kim
- Center for Metabolic Function Regulation (CMFR) and Department of Microbiology Wonkwang University School of Medicine Jeonbuk Korea
- NADIANBIO Ltd, Business Incubation Center Iksan Korea
| | - Wa Cao
- Center for Metabolic Function Regulation (CMFR) and Department of Microbiology Wonkwang University School of Medicine Jeonbuk Korea
| | - Gi‐Su Oh
- NADIANBIO Ltd, Business Incubation Center Iksan Korea
| | - SeungHoon Lee
- NADIANBIO Ltd, Business Incubation Center Iksan Korea
| | - AiHua Shen
- Center for Metabolic Function Regulation (CMFR) and Department of Microbiology Wonkwang University School of Medicine Jeonbuk Korea
| | - Dipendra Khadka
- Center for Metabolic Function Regulation (CMFR) and Department of Microbiology Wonkwang University School of Medicine Jeonbuk Korea
| | - Su‐Bin Lee
- Center for Metabolic Function Regulation (CMFR) and Department of Microbiology Wonkwang University School of Medicine Jeonbuk Korea
| | - Subham Sharma
- Center for Metabolic Function Regulation (CMFR) and Department of Microbiology Wonkwang University School of Medicine Jeonbuk Korea
| | - Seon Young Kim
- Center for Metabolic Function Regulation (CMFR) and Department of Microbiology Wonkwang University School of Medicine Jeonbuk Korea
| | - Seong‐Kyu Choe
- Center for Metabolic Function Regulation (CMFR) and Department of Microbiology Wonkwang University School of Medicine Jeonbuk Korea
| | - Tae Hwan Kwak
- NADIANBIO Ltd, Business Incubation Center Iksan Korea
| | - Jin‐Man Kim
- Department of Pathology and Infection Signaling Network Research Center Chungnam National University School of Medicine Daejeon Korea
| | - Raekil Park
- Department of Biomedical Science & Engineering, Institute of Integrated Technology Gwangju Institute of Science and Technology Gwangju Korea
| | - Hong‐Seob So
- Center for Metabolic Function Regulation (CMFR) and Department of Microbiology Wonkwang University School of Medicine Jeonbuk Korea
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23
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Luo X, Xia Y, Li XD, Wang JY. The effect of AP-2δ on transcription of the Prestin gene in HEI-OC1 cells upon oxidative stress. Cell Mol Biol Lett 2019; 24:45. [PMID: 31297132 PMCID: PMC6595603 DOI: 10.1186/s11658-019-0170-0] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2019] [Accepted: 06/07/2019] [Indexed: 12/18/2022] Open
Abstract
Background The study aimed to investigate the effect of oxidative stress on Prestin expression, and explore the transcription factors (TFs) that are involved in regulating the expression of Prestin in House Ear Institute-Organ of Corti 1 (HEI-OC1) cells upon oxidative stress. Methods Quantitative real-time polymerase chain reaction (qRT-PCR) and Western blot were used to detect the expression level of Prestin. Reverse chromatin immunoprecipitation (reverse ChIP) assay was performed to identify proteins that could bind to the Prestin gene. Small interfering RNA (siRNA) and chromatin immunoprecipitation (ChIP) experiments were used to further verify the results. HEI-OC1 cells were incubated with four different concentrations of tert-butyl hydroperoxide (t-BHP) for 24 h or 48 h to construct the oxidative stress model. Results Oxidative stress induced Prestin increase at the mRNA level but with a concomitant decrease at the protein level. TF activating enhancer binding protein-2δ (AP-2δ) screened by reverse ChIP assay was demonstrated to bind to transcriptional start site 1441 of the Prestin promoter region and negatively regulate the expression of Prestin by siRNA and ChIP experiments. Furthermore, AP-2δ was down-regulated under oxidative stress. Conclusions In conclusion, oxidative stress inhibits the expression of Prestin protein, and the transcription mechanism is triggered to compensate for the loss of Prestin protein. AP-2δ is one of the important TFs that suppresses transcription of the Prestin gene, and AP-2δ suppression further boosted Prestin mRNA activation under oxidative stress. Electronic supplementary material The online version of this article (10.1186/s11658-019-0170-0) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Xuan Luo
- 1Department of Labor Health and Environmental Hygiene, School of Public Health, Guangdong Pharmaceutical University, Guangzhou, 510310 China
| | - Yun Xia
- 2Department of Labor Health and Environmental Hygiene, School of Public Health, Guangdong Pharmaceutical University, Guangzhou, 510310 China
| | - Xu-Dong Li
- Key Laboratory, Occupational Disease Prevention and Control of Hospital of Guangdong Province, Guangzhou, 510300 China
| | - Jun-Yi Wang
- 1Department of Labor Health and Environmental Hygiene, School of Public Health, Guangdong Pharmaceutical University, Guangzhou, 510310 China
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24
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Zhang J, Wang N, Xu A. Cmah deficiency may lead to age-related hearing loss by influencing miRNA-PPAR mediated signaling pathway. PeerJ 2019; 7:e6856. [PMID: 31149396 PMCID: PMC6526899 DOI: 10.7717/peerj.6856] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2019] [Accepted: 03/26/2019] [Indexed: 12/26/2022] Open
Abstract
Background Previous evidence has indicated CMP-Neu5Ac hydroxylase (Cmah) disruption inducesaging-related hearing loss (AHL). However, its function mechanisms remain unclear. This study was to explore the mechanisms of AHL by using microarray analysis in the Cmah deficiency animal model. Methods Microarray dataset GSE70659 was available from the Gene Expression Omnibus database, including cochlear tissues from wild-type and Cmah-null C57BL/6J mice with old age (12 months, n = 3). Differentially expressed genes (DEGs) were identified using the Linear Models for Microarray data method and a protein–protein interaction (PPI) network was constructed using data from the Search Tool for the Retrieval of Interacting Genes database followed by module analysis. Kyoto Encyclopedia of Genes and Genomes pathway enrichment analysis was performed using the Database for Annotation, Visualization and Integrated Discovery. The upstream miRNAs and potential small-molecule drugs were predicted by miRwalk2.0 and Connectivity Map, respectively. Results A total of 799 DEGs (449 upregulated and 350 downregulated) were identified. Upregulated DEGs were involved in Cell adhesion molecules (ICAM1, intercellular adhesion molecule 1) and tumor necrosis factor (TNF) signaling pathway (FOS, FBJ osteosarcoma oncogene; ICAM1), while downregulated DEGs participated in PPAR signaling pathway (PPARG, peroxisome proliferator-activated receptor gamma). A PPI network was constructed, in which FOS, ICAM1 and PPARG were ranked as hub genes and PPARG was a transcription factor to regulate other target genes (ICAM1, FOS). Function analysis of two significant modules further demonstrated PPAR signaling pathway was especially important. Furthermore, mmu-miR-130b-3p, mmu-miR-27a-3p, mmu-miR-27b-3p and mmu-miR-721 were predicted to regulate PPARG. Topiramate were speculated to be a potential small-molecule drug to reverse DEGs in AHL. Conclusions PPAR mediated signaling pathway may be an important mechanism for AHL. Downregulation of the above miRNAs and use of topiramate may be potential treatment strategies for ALH by upregulating PPARG.
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Affiliation(s)
- Juhong Zhang
- Department of Otolaryngology, Shanghai Jiao Tong University Affiliated Sixth People's Hospital South Campus, Southern Medical University Affiliated Fengxian Hospital, Shanghai, China
| | - Na Wang
- Department of Otolaryngology/Head and Neck Surgery, the Second Hospital of Shandong University, Jinan, China
| | - Anting Xu
- Department of Otolaryngology/Head and Neck Surgery, the Second Hospital of Shandong University, Jinan, China.,NHC. Key Laboratory of Otorhinolaryngology, Shandong University, Jinan, China
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25
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Zhao RZ, Jiang S, Zhang L, Yu ZB. Mitochondrial electron transport chain, ROS generation and uncoupling (Review). Int J Mol Med 2019; 44:3-15. [PMID: 31115493 PMCID: PMC6559295 DOI: 10.3892/ijmm.2019.4188] [Citation(s) in RCA: 451] [Impact Index Per Article: 90.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2019] [Accepted: 04/19/2019] [Indexed: 12/18/2022] Open
Abstract
The mammalian mitochondrial electron transport chain (ETC) includes complexes I-IV, as well as the electron transporters ubiquinone and cytochrome c. There are two electron transport pathways in the ETC: Complex I/III/IV, with NADH as the substrate and complex II/III/IV, with succinic acid as the substrate. The electron flow is coupled with the generation of a proton gradient across the inner membrane and the energy accumulated in the proton gradient is used by complex V (ATP synthase) to produce ATP. The first part of this review briefly introduces the structure and function of complexes I-IV and ATP synthase, including the specific electron transfer process in each complex. Some electrons are directly transferred to O2 to generate reactive oxygen species (ROS) in the ETC. The second part of this review discusses the sites of ROS generation in each ETC complex, including sites IF and IQ in complex I, site IIF in complex II and site IIIQo in complex III, and the physiological and pathological regulation of ROS. As signaling molecules, ROS play an important role in cell proliferation, hypoxia adaptation and cell fate determination, but excessive ROS can cause irreversible cell damage and even cell death. The occurrence and development of a number of diseases are closely related to ROS overproduction. Finally, proton leak and uncoupling proteins (UCPS) are discussed. Proton leak consists of basal proton leak and induced proton leak. Induced proton leak is precisely regulated and induced by UCPs. A total of five UCPs (UCP1-5) have been identified in mammalian cells. UCP1 mainly plays a role in the maintenance of body temperature in a cold environment through non-shivering thermogenesis. The core role of UCP2-5 is to reduce oxidative stress under certain conditions, therefore exerting cytoprotective effects. All diseases involving oxidative stress are associated with UCPs.
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Affiliation(s)
- Ru-Zhou Zhao
- Department of Aerospace Physiology, Fourth Military Medical University, Xi'an, Shaanxi 710032, P.R. China
| | - Shuai Jiang
- Department of Aerospace Physiology, Fourth Military Medical University, Xi'an, Shaanxi 710032, P.R. China
| | - Lin Zhang
- Department of Aerospace Physiology, Fourth Military Medical University, Xi'an, Shaanxi 710032, P.R. China
| | - Zhi-Bin Yu
- Department of Aerospace Physiology, Fourth Military Medical University, Xi'an, Shaanxi 710032, P.R. China
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Xi J, Chen Y, Jing J, Zhang Y, Liang C, Hao Z, Zhang L. Sirtuin 3 suppresses the formation of renal calcium oxalate crystals through promoting M2 polarization of macrophages. J Cell Physiol 2018; 234:11463-11473. [PMID: 30588609 DOI: 10.1002/jcp.27803] [Citation(s) in RCA: 36] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2018] [Accepted: 11/01/2018] [Indexed: 01/10/2023]
Affiliation(s)
- Junhua Xi
- Department of Urology The First Affiliated Hospital of Anhui Medical University Hefei Anhui China
- Institute of Urology, Anhui Medical University Hefei Anhui China
- Anhui Province Key Laboratory of Genitourinary Diseases, Anhui Medical University Hefei Anhui China
- Department of Urology Hefei Hospital Affiliated to Anhui Medical University (The Second People's Hospital of Hefei) Hefei Anhui China
| | - Yang Chen
- Department of Urology The First Affiliated Hospital of Anhui Medical University Hefei Anhui China
- Institute of Urology, Anhui Medical University Hefei Anhui China
- Anhui Province Key Laboratory of Genitourinary Diseases, Anhui Medical University Hefei Anhui China
| | - Junfeng Jing
- Department of Urology Hefei Hospital Affiliated to Anhui Medical University (The Second People's Hospital of Hefei) Hefei Anhui China
| | - Yanbin Zhang
- Department of Urology The First Affiliated Hospital of Anhui Medical University Hefei Anhui China
- Institute of Urology, Anhui Medical University Hefei Anhui China
- Anhui Province Key Laboratory of Genitourinary Diseases, Anhui Medical University Hefei Anhui China
- Department of Urology Hefei Hospital Affiliated to Anhui Medical University (The Second People's Hospital of Hefei) Hefei Anhui China
| | - Chaozhao Liang
- Department of Urology The First Affiliated Hospital of Anhui Medical University Hefei Anhui China
- Institute of Urology, Anhui Medical University Hefei Anhui China
- Anhui Province Key Laboratory of Genitourinary Diseases, Anhui Medical University Hefei Anhui China
| | - Zongyao Hao
- Department of Urology The First Affiliated Hospital of Anhui Medical University Hefei Anhui China
- Institute of Urology, Anhui Medical University Hefei Anhui China
- Anhui Province Key Laboratory of Genitourinary Diseases, Anhui Medical University Hefei Anhui China
| | - Li Zhang
- Department of Urology The First Affiliated Hospital of Anhui Medical University Hefei Anhui China
- Institute of Urology, Anhui Medical University Hefei Anhui China
- Anhui Province Key Laboratory of Genitourinary Diseases, Anhui Medical University Hefei Anhui China
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27
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Hao S, Wang L, Zhao K, Zhu X, Ye F. Rs1894720 polymorphism in MIAT increased susceptibility to age-related hearing loss by modulating the activation of miR-29b/SIRT1/PGC-1α signaling. J Cell Biochem 2018; 120:4975-4986. [PMID: 30556210 DOI: 10.1002/jcb.27773] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2018] [Accepted: 09/06/2018] [Indexed: 11/07/2022]
Abstract
BACKGROUND MIAT may be implicated in the pathogenesis of age-related hearing loss (AHL). This study aimed to clarify the effect of a MIAT signaling pathway on the risk of AHL. METHODS Terminal deoxynucleotidyl transferase dUTP nick-end labeling assay, auditory brainstem response (ABR) and quantitative hair cell counts were used to compare the hearing functions in different groups of mice. 5,5,6,6-Tetrachloro-1,1,3,3-tetraethylbenzimidazolylcarbocyanine iodide (JC-1) dye method was used to establish the potential association between mitochondrial dysfunction and aging. Real-time polymerase chain reaction, Western blot analysis, computational analysis, and luciferase assay were conducted to establish a myocardial infarction associated transcript (MIAT) signaling pathway, whose role in the pathogenesis of AHL was further validated by 3-[4,5-dimethylthiazol-2-yl]-2,5 diphenyl tetrazolium bromide (MTT) assay and flow cytometry. RESULTS Aged C57BL/6 mice were associated with a more severe level of hair cell loss, while exhibiting a higher ABR threshold at various frequencies as well as a lower percentage of inner/outer hair cells. A reduced mitochondrial membrane potential in the cochleae of aged C57BL/6 mice indicated the presence of mitochondrial dysfunction in these mice. Relative expression of MIAT, Sirtuin1 (SIRT1), and peroxisome proliferator-activated receptor γ coactivator 1α (PGC-1α) was downregulated in aged mice, with microRNA-29b (miR-29b) being highly expressed. Also, MIAT binds to miR-29b, an inhibitor of SIRT1 expression. The regulatory relationship among MIAT, miR-29b, and SIRT1 was further validated by comparing the differentiated expression of these factors in cells treated with phosphate-buffered saline + H2 O2, a negative control + H2 O2, MIAT + H2 O2 , or H2 O2 + anti-miR-29b. CONCLUSION MIAT could elevate the expression of SIRT1/PGC-1α via downregulating miR-29b. And the downregulated SIRT/PGC-1α increased the incidence of AHL via promoting the apoptosis of cochlear hair cells.
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Affiliation(s)
- Shaojuan Hao
- Department of Otorhinolaryngology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Le Wang
- Department of Otorhinolaryngology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Kun Zhao
- Department of Otorhinolaryngology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Xiaodan Zhu
- Department of Otorhinolaryngology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Fanglei Ye
- Department of Otorhinolaryngology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
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28
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Okerblom J, Fletes W, Patel HH, Schenk S, Varki A, Breen EC. Human-like Cmah inactivation in mice increases running endurance and decreases muscle fatigability: implications for human evolution. Proc Biol Sci 2018; 285:rspb.2018.1656. [PMID: 30209232 PMCID: PMC6158528 DOI: 10.1098/rspb.2018.1656] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2018] [Accepted: 08/20/2018] [Indexed: 12/13/2022] Open
Abstract
Compared to other primates, humans are exceptional long-distance runners, a feature that emerged in genus Homo approximately 2 Ma and is classically attributed to anatomical and physiological adaptations such as an enlarged gluteus maximus and improved heat dissipation. However, no underlying genetic changes have currently been defined. Two to three million years ago, an exon deletion in the CMP-Neu5Ac hydroxylase (CMAH) gene also became fixed in our ancestral lineage. Cmah loss in mice exacerbates disease severity in multiple mouse models for muscular dystrophy, a finding only partially attributed to differences in immune reactivity. We evaluated the exercise capacity of Cmah-/- mice and observed an increased performance during forced treadmill testing and after 15 days of voluntary wheel running. Cmah-/- hindlimb muscle exhibited more capillaries and a greater fatigue resistance in situ Maximal coupled respiration was also higher in Cmah null mice ex vivo and relevant differences in metabolic pathways were also noted. Taken together, these data suggest that CMAH loss contributes to an improved skeletal muscle capacity for oxygen use. If translatable to humans, CMAH loss could have provided a selective advantage for ancestral Homo during the transition from forest dwelling to increased resource exploration and hunter/gatherer behaviour in the open savannah.
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Affiliation(s)
- Jonathan Okerblom
- Center for Academic Research and Training in Anthropogeny (CARTA), University of California, San Diego, 9500 Gilman Drive, La Jolla, CA 92093, USA.,Glycobiology Research and Training Center (GRTC), University of California, San Diego, 9500 Gilman Drive, La Jolla, CA 92093, USA.,Department of Medicine, University of California, San Diego, 9500 Gilman Drive, La Jolla, CA 92093, USA.,Department of Cellular and Molecular Medicine, University of California, San Diego, 9500 Gilman Drive, La Jolla, CA 92093, USA
| | - William Fletes
- Glycobiology Research and Training Center (GRTC), University of California, San Diego, 9500 Gilman Drive, La Jolla, CA 92093, USA.,Department of Medicine, University of California, San Diego, 9500 Gilman Drive, La Jolla, CA 92093, USA.,Initiative for Maximizing Student Development (IMSD) Program, University of California, San Diego, 9500 Gilman Drive, La Jolla, CA 92093, USA
| | - Hemal H Patel
- Department of Anesthesiology, University of California, San Diego, 9500 Gilman Drive, La Jolla, CA 92093, USA.,Veterans Affairs San Diego Healthcare System, 3350 La Jolla Village Drive, San Diego, CA 92161, USA
| | - Simon Schenk
- Department of Orthopedic Surgery, University of California, San Diego, 9500 Gilman Drive, La Jolla, CA 92093, USA
| | - Ajit Varki
- Center for Academic Research and Training in Anthropogeny (CARTA), University of California, San Diego, 9500 Gilman Drive, La Jolla, CA 92093, USA .,Glycobiology Research and Training Center (GRTC), University of California, San Diego, 9500 Gilman Drive, La Jolla, CA 92093, USA.,Department of Medicine, University of California, San Diego, 9500 Gilman Drive, La Jolla, CA 92093, USA.,Department of Cellular and Molecular Medicine, University of California, San Diego, 9500 Gilman Drive, La Jolla, CA 92093, USA
| | - Ellen C Breen
- Department of Medicine, University of California, San Diego, 9500 Gilman Drive, La Jolla, CA 92093, USA
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Zhao H, Luo Y, Chen L, Zhang Z, Shen C, Li Y, Xu R. Sirt3 inhibits cerebral ischemia-reperfusion injury through normalizing Wnt/β-catenin pathway and blocking mitochondrial fission. Cell Stress Chaperones 2018; 23:1079-1092. [PMID: 29862442 PMCID: PMC6111081 DOI: 10.1007/s12192-018-0917-y] [Citation(s) in RCA: 44] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2018] [Revised: 05/15/2018] [Accepted: 05/19/2018] [Indexed: 12/19/2022] Open
Abstract
Cerebral ischemia-reperfusion injury (IRI) potentiates existing brain damage and increases mortality and morbidity via poorly understood mechanisms. The aim of our study is to investigate the role of Sirtuin 3 (Sirt3) in the development and progression of cerebral ischemia-reperfusion injury with a focus on mitochondrial fission and the Wnt/β-catenin pathway. Our data indicated that Sirt3 was downregulated in response to cerebral IRI. However, the overexpression of Sirt3 reduced the brain infarction area and repressed IRI-mediated neuron apoptosis. Functional assays demonstrated that IRI augmented mitochondrial fission, which induced ROS overproduction, redox imbalance, mitochondrial pro-apoptotic protein leakage, and caspase-9-dependent cell death pathway activation. However, the overexpression of Sirt3 blocked mitochondrial fission and induced pro-survival signals in neurons subjected to IRI. At the molecular level, our data further illustrated that the Wnt/β-catenin pathway is required for the neuroprotection exerted by Sirt3 overexpression. Wnt/β-catenin pathway activation via inhibiting β-catenin phosphorylation attenuates mitochondrial fission and mitochondrial apoptosis. Collectively, our data show that cerebral IRI is associated with Sirt3 downregulation, Wnt/β-catenin pathway phosphorylated inactivation, and mitochondrial fission initiation, causing neurons to undergo caspase-9-dependent cell death. Based on this, strategies for enhancing Sirt3 activity and activating the Wnt/β-catenin pathway could be therapeutic targets for treating cerebral ischemia-reperfusion injury.
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Affiliation(s)
- Hao Zhao
- Department of Neurosurgery, PLA Army General Hospital, No.5 Nanmencang Hutong, Dongcheng District, Beijing, 100730, China
| | - Yongchun Luo
- Department of Neurosurgery, PLA Army General Hospital, No.5 Nanmencang Hutong, Dongcheng District, Beijing, 100730, China
| | - Lihua Chen
- Department of Neurosurgery, PLA Army General Hospital, No.5 Nanmencang Hutong, Dongcheng District, Beijing, 100730, China
| | - Zhenhai Zhang
- Department of Neurosurgery, PLA Army General Hospital, No.5 Nanmencang Hutong, Dongcheng District, Beijing, 100730, China
| | - Chunsen Shen
- Department of Neurosurgery, PLA Army General Hospital, No.5 Nanmencang Hutong, Dongcheng District, Beijing, 100730, China
| | - Yunjun Li
- Department of Neurosurgery, PLA Army General Hospital, No.5 Nanmencang Hutong, Dongcheng District, Beijing, 100730, China
| | - Ruxiang Xu
- Department of Neurosurgery, PLA Army General Hospital, No.5 Nanmencang Hutong, Dongcheng District, Beijing, 100730, China.
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Abstract
OBJECTIVES To evaluate whether gout is associated with a higher risk of hearing loss in older adults. DESIGN Retrospective cohort study. SETTING USA. PARTICIPANTS 5% random sample of US Medicare claims 2006-2012, representative of US adults aged 65 years or older. PRIMARY AND SECONDARY OUTCOMES Incident (new) hearing loss identified by the presence of at least two claims at least 4 weeks apart with an International Classification of Diseases, Ninth Revision, 389.xx, with no respective claim in the baseline 1-year observation period. RESULTS Among the 1.71 million eligible people, 89 409 developed incident hearing impairment. The crude incidence rates of incident hearing impairment in people with versus without gout were 16.9 vs. 8.7 per 1000 person-years. Using Cox regression analyses adjusted for demographics, medical comorbidity and common cardiovascular and gout medications, we found that gout was associated with a significantly higher HR of incident hearing impairment, HR was 1.44 (95% CI 1.40 to 1.49, p<0.0001). Findings were confirmed in sensitivity analyses that substituted continuous Charlson-Romano Index with categorical variable or all comorbidities and additionally cardiovascular risk factors, with minimal attenuation of HR. CONCLUSIONS Gout is associated with a higher risk of development of hearing loss in older adults. Future studies need to assess the underlying mechanisms of this association.
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Affiliation(s)
- Jasvinder A Singh
- Medicine Service, VA Medical Center, Birmingham, Alabama, USA
- Department of Medicine, School of Medicine, University of Alabama, Birmingham, Alabama, USA
- Division of Epidemiology, School of Public Health, University of Alabama, Birmingham, Alabama, USA
| | - John D Cleveland
- Department of Medicine, School of Medicine, University of Alabama, Birmingham, Alabama, USA
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31
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Wang X, Jin C, Zhong Y, Li X, Han J, Xue W, Wu P, Xia X, Peng X. Glutathione Reduction of Patulin-Evoked Cytotoxicity in HEK293 Cells by the Prevention of Oxidative Damage and the Mitochondrial Apoptotic Pathway. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2018; 66:7775-7785. [PMID: 29676913 DOI: 10.1021/acs.jafc.8b01212] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/07/2023]
Abstract
Patulin (PAT) is a mycotoxin frequently detected in moldy fruits and fruit products. This study investigated the protective role of glutathione (GSH), an antioxidant agent, against PAT-induced cytotoxicity and its potential mechanisms in HEK293 cells. The obtained results showed that the addition of GSH significantly increased cell viability and decreased apoptosis induced by PAT. Additionally, GSH decreased intracellular ROS and mitochondrial ROS overproduction, suppressed the decline of the mitochondrial membrane potential, and maintained cellular ATP contents. GSH prevented the impairment of mitochondrial oxidative-phosphorylation system and, especially, enhanced the mRNA and protein levels of electron-transport-chain complex III (UQCRC2) and complex V (ATP5, ATP6 and ATP8). Furthermore, GSH increased endogenous GSH contents; enhanced the antioxidant-enzyme activities of SOD, CAT, GR, and GPx; and modulated oxidative damage. These results suggest that GSH reduces PAT-induced cytotoxicity via inhibition of oxidative damage and the mitochondrial apoptotic pathway in HEK293 cells.
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Affiliation(s)
- Xiaorui Wang
- Beijing Advanced Innovation Center for Food Nutrition and Human Health , Beijing Technology and Business University (BTBU) , Beijing 100048 , China
- College of Food Science and Engineering , Northwest A&F University , 22 Xinong Road , Yangling , Shaanxi 712100 , China
| | - Chengni Jin
- Beijing Advanced Innovation Center for Food Nutrition and Human Health , Beijing Technology and Business University (BTBU) , Beijing 100048 , China
- College of Food Science and Engineering , Northwest A&F University , 22 Xinong Road , Yangling , Shaanxi 712100 , China
| | - Yujie Zhong
- College of Food Science and Engineering , Northwest A&F University , 22 Xinong Road , Yangling , Shaanxi 712100 , China
| | - Xuan Li
- College of Food Science and Engineering , Northwest A&F University , 22 Xinong Road , Yangling , Shaanxi 712100 , China
| | - Jiahui Han
- College of Food Science and Engineering , Northwest A&F University , 22 Xinong Road , Yangling , Shaanxi 712100 , China
| | - Wei Xue
- College of Food Science and Engineering , Northwest A&F University , 22 Xinong Road , Yangling , Shaanxi 712100 , China
| | - Peng Wu
- College of Food Science and Engineering , Northwest A&F University , 22 Xinong Road , Yangling , Shaanxi 712100 , China
| | - Xiaodong Xia
- College of Food Science and Engineering , Northwest A&F University , 22 Xinong Road , Yangling , Shaanxi 712100 , China
| | - Xiaoli Peng
- Beijing Advanced Innovation Center for Food Nutrition and Human Health , Beijing Technology and Business University (BTBU) , Beijing 100048 , China
- College of Food Science and Engineering , Northwest A&F University , 22 Xinong Road , Yangling , Shaanxi 712100 , China
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32
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Torrens-Mas M, Hernández-López R, Oliver J, Roca P, Sastre-Serra J. Sirtuin 3 silencing improves oxaliplatin efficacy through acetylation of MnSOD in colon cancer. J Cell Physiol 2018; 233:6067-6076. [PMID: 29323702 DOI: 10.1002/jcp.26443] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2017] [Accepted: 01/05/2018] [Indexed: 01/10/2023]
Abstract
Sirtuin 3 (SIRT3) is the major mitochondria deacetylase and regulates ROS levels by targeting several key proteins, such as those involved in mitochondrial function and antioxidant defenses. This way, SIRT3 balances ROS production and scavenging and promotes cell survival. The aim of this study was to analyze the effect of SIRT3 silencing on the antioxidant response in SW620 colon cancer cell line, and whether this intervention could improve efficacy of oxaliplatin, a common drug used to treat colon cancer. For this purpose, we obtained stable clones of SW620 with SIRT3 knockdown and determined parameters such as ROS levels and ROS production, levels of several antioxidant enzymes, cell viability, and apoptosis. Results showed that after SIRT3 silencing, both ROS levels and production were increased, and antioxidant enzymes gene expression was significantly reduced. Furthermore, manganese superoxide dismutase levels and enzymatic activity were reduced. Combination of SIRT3 knockdown with oxaliplatin treatment further increased ROS production and apoptosis, reducing cell viability. Finally, survival curves on colon cancer patients suggested that SIRT3 expression is related to a poorer prognosis. In conclusion, SIRT3 could be a target for colon cancer, since it regulates the antioxidant response and its knockdown improves the efficacy of oxaliplatin treatment.
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Affiliation(s)
- Margalida Torrens-Mas
- Grupo Multidisciplinar de Oncología Traslacional, Institut Universitari d'Investigació en Ciències de la Salut, Universitat de les Illes Balears, Palma, España.,Instituto de Investigació Sanitaria Illes Balears, Palma, España
| | - Reyniel Hernández-López
- Grupo Multidisciplinar de Oncología Traslacional, Institut Universitari d'Investigació en Ciències de la Salut, Universitat de les Illes Balears, Palma, España.,Instituto de Investigació Sanitaria Illes Balears, Palma, España
| | - Jordi Oliver
- Grupo Multidisciplinar de Oncología Traslacional, Institut Universitari d'Investigació en Ciències de la Salut, Universitat de les Illes Balears, Palma, España.,Instituto de Investigació Sanitaria Illes Balears, Palma, España
| | - Pilar Roca
- Grupo Multidisciplinar de Oncología Traslacional, Institut Universitari d'Investigació en Ciències de la Salut, Universitat de les Illes Balears, Palma, España.,Instituto de Investigació Sanitaria Illes Balears, Palma, España
| | - Jorge Sastre-Serra
- Grupo Multidisciplinar de Oncología Traslacional, Institut Universitari d'Investigació en Ciències de la Salut, Universitat de les Illes Balears, Palma, España.,Instituto de Investigació Sanitaria Illes Balears, Palma, España
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33
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The regulation of FOXO1 and its role in disease progression. Life Sci 2017; 193:124-131. [PMID: 29158051 DOI: 10.1016/j.lfs.2017.11.030] [Citation(s) in RCA: 218] [Impact Index Per Article: 31.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2017] [Revised: 10/14/2017] [Accepted: 11/16/2017] [Indexed: 12/27/2022]
Abstract
Cell proliferation, apoptosis, autophagy, oxidative stress and metabolic dysregulation are the basis of many diseases. Forkhead box transcription factor O1 (FOXO1) changes in response to cellular stimulation and maintains tissue homeostasis during the above-mentioned physiological and pathological processes. Substantial evidences indicate that FOXO1's function depends on the modulation of downstream targets such as apoptosis- and autophagy-associated genes, anti-oxidative stress enzymes, cell cycle arrest genes, and metabolic and immune regulators. In addition, oxidative stress, high glucose and other stimulations induce the regulation of FOXO1 activity via PI3k-Akt, JNK, CBP, Sirtuins, ubiquitin E3 ligases, etc., which mediate multiple signalling pathways. Subsequent post-transcriptional modifications, including phosphorylation, ubiquitination, acetylation, deacetylation, arginine methylation and O-GlcNAcylation, activate or inhibit FOXO1. The regulation of FOXO1 and its role might provide a significant avenue for the prevention and treatment of diseases. However, the subtle mechanisms of the post-transcriptional modifications and the effect of FOXO1 remain elusive and even conflicting in the development of many diseases. The determination of these questions potentially has implications for further research regarding FOXO1 signalling and the identification of targeted drugs.
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Frisina RD, Ding B, Zhu X, Walton JP. Age-related hearing loss: prevention of threshold declines, cell loss and apoptosis in spiral ganglion neurons. Aging (Albany NY) 2017; 8:2081-2099. [PMID: 27667674 PMCID: PMC5076453 DOI: 10.18632/aging.101045] [Citation(s) in RCA: 65] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2016] [Accepted: 09/08/2016] [Indexed: 12/18/2022]
Abstract
Age-related hearing loss (ARHL) -presbycusis - is the most prevalent neurodegenerative disease and number one communication disorder of our aged population; and affects hundreds of millions of people worldwide. Its prevalence is close to that of cardiovascular disease and arthritis, and can be a precursor to dementia. The auditory perceptual dysfunction is well understood, but knowledge of the biological bases of ARHL is still somewhat lacking. Surprisingly, there are no FDA-approved drugs for treatment. Based on our previous studies of human subjects, where we discovered relations between serum aldosterone levels and the severity of ARHL, we treated middle age mice with aldosterone, which normally declines with age in all mammals. We found that hearing thresholds and suprathreshold responses significantly improved in the aldosterone-treated mice compared to the non-treatment group. In terms of cellular and molecular mechanisms underlying this therapeutic effect, additional experiments revealed that spiral ganglion cell survival was significantly improved, mineralocorticoid receptors were upregulated via post-translational protein modifications, and age-related intrinsic and extrinsic apoptotic pathways were blocked by the aldosterone therapy. Taken together, these novel findings pave the way for translational drug development towards the first medication to prevent the progression of ARHL.
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Affiliation(s)
- Robert D Frisina
- Department Communication Sciences and Disorders, Global Center for Hearing and Speech Research, University of South Florida, Tampa FL, 33612, USA.,Department Chemical and Biomedical Engineering, Global Center for Hearing and Speech Research, University of South Florida, Tampa FL, 33612, USA
| | - Bo Ding
- Department Communication Sciences and Disorders, Global Center for Hearing and Speech Research, University of South Florida, Tampa FL, 33612, USA
| | - Xiaoxia Zhu
- Department Chemical and Biomedical Engineering, Global Center for Hearing and Speech Research, University of South Florida, Tampa FL, 33612, USA
| | - Joseph P Walton
- Department Communication Sciences and Disorders, Global Center for Hearing and Speech Research, University of South Florida, Tampa FL, 33612, USA.,Department Chemical and Biomedical Engineering, Global Center for Hearing and Speech Research, University of South Florida, Tampa FL, 33612, USA
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35
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Okerblom J, Varki A. Biochemical, Cellular, Physiological, and Pathological Consequences of Human Loss of N-Glycolylneuraminic Acid. Chembiochem 2017; 18:1155-1171. [PMID: 28423240 DOI: 10.1002/cbic.201700077] [Citation(s) in RCA: 52] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2017] [Indexed: 12/15/2022]
Abstract
About 2-3 million years ago, Alu-mediated deletion of a critical exon in the CMAH gene became fixed in the hominin lineage ancestral to humans, possibly through a stepwise process of selection by pathogen targeting of the CMAH product (the sialic acid Neu5Gc), followed by reproductive isolation through female anti-Neu5Gc antibodies. Loss of CMAH has occurred independently in some other lineages, but is functionally intact in Old World primates, including our closest relatives, the chimpanzee. Although the biophysical and biochemical ramifications of losing tens of millions of Neu5Gc hydroxy groups at most cell surfaces remains poorly understood, we do know that there are multiscale effects functionally relevant to both sides of the host-pathogen interface. Hominin CMAH loss might also contribute to understanding human evolution, at the time when our ancestors were starting to use stone tools, increasing their consumption of meat, and possibly hunting. Comparisons with chimpanzees within ethical and practical limitations have revealed some consequences of human CMAH loss, but more has been learned by using a mouse model with a human-like Cmah inactivation. For example, such mice can develop antibodies against Neu5Gc that could affect inflammatory processes like cancer progression in the face of Neu5Gc metabolic incorporation from red meats, display a hyper-reactive immune system, a human-like tendency for delayed wound healing, late-onset hearing loss, insulin resistance, susceptibility to muscular dystrophy pathologies, and increased sensitivity to multiple human-adapted pathogens involving sialic acids. Further studies in such mice could provide a model for other human-specific processes and pathologies involving sialic acid biology that have yet to be explored.
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Affiliation(s)
- Jonathan Okerblom
- Biomedical Sciences Graduate Program, University of California in San Diego, 9500 Gilman Drive, La Jolla, CA, 92093-0687, USA
| | - Ajit Varki
- Glycobiology Research and Training Center, GRTC) and, Center for Academic Research and Training in Anthropogeny, CARTA), Departments of Medicine and Cellular and Molecular Medicine, University of California in San Diego, La Jolla, CA, 92093-0687, USA
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37
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Babbucci M, Ferraresso S, Pauletto M, Franch R, Papetti C, Patarnello T, Carnier P, Bargelloni L. An integrated genomic approach for the study of mandibular prognathism in the European seabass (Dicentrarchus labrax). Sci Rep 2016; 6:38673. [PMID: 27929136 PMCID: PMC5144136 DOI: 10.1038/srep38673] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2016] [Accepted: 11/11/2016] [Indexed: 12/13/2022] Open
Abstract
Skeletal anomalies in farmed fish are a relevant issue affecting animal welfare and health and causing significant economic losses. Here, a high-density genetic map of European seabass for QTL mapping of jaw deformity was constructed and a genome-wide association study (GWAS) was carried out on a total of 298 juveniles, 148 of which belonged to four full-sib families. Out of 298 fish, 107 were affected by mandibular prognathism (MP). Three significant QTLs and two candidate SNPs associated with MP were identified. The two GWAS candidate markers were located on ChrX and Chr17, both in close proximity with the peaks of the two most significant QTLs. Notably, the SNP marker on Chr17 was positioned within the Sobp gene coding region, which plays a pivotal role in craniofacial development. The analysis of differentially expressed genes in jaw-deformed animals highlighted the “nervous system development” as a crucial pathway in MP. In particular, Zic2, a key gene for craniofacial morphogenesis in model species, was significantly down-regulated in MP-affected animals. Gene expression data revealed also a significant down-regulation of Sobp in deformed larvae. Our analyses, integrating transcriptomic and GWA methods, provide evidence for putative mechanisms underlying seabass jaw deformity.
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Affiliation(s)
- Massimiliano Babbucci
- Department of Comparative Biomedicine and Food Science, University of Padova, Viale dell'Università 16, 35020 Legnaro, Italy
| | - Serena Ferraresso
- Department of Comparative Biomedicine and Food Science, University of Padova, Viale dell'Università 16, 35020 Legnaro, Italy
| | - Marianna Pauletto
- Department of Comparative Biomedicine and Food Science, University of Padova, Viale dell'Università 16, 35020 Legnaro, Italy
| | - Rafaella Franch
- Department of Comparative Biomedicine and Food Science, University of Padova, Viale dell'Università 16, 35020 Legnaro, Italy
| | - Chiara Papetti
- Department of Biology, University of Padova, Via Ugo Bassi 58/B, 35121 Padova, Italy
| | - Tomaso Patarnello
- Department of Comparative Biomedicine and Food Science, University of Padova, Viale dell'Università 16, 35020 Legnaro, Italy
| | - Paolo Carnier
- Department of Comparative Biomedicine and Food Science, University of Padova, Viale dell'Università 16, 35020 Legnaro, Italy
| | - Luca Bargelloni
- Department of Comparative Biomedicine and Food Science, University of Padova, Viale dell'Università 16, 35020 Legnaro, Italy
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Xue T, Wei L, Zha DJ, Qiu JH, Chen FQ, Qiao L, Qiu Y. miR-29b overexpression induces cochlear hair cell apoptosis through the regulation of SIRT1/PGC-1α signaling: Implications for age-related hearing loss. Int J Mol Med 2016; 38:1387-1394. [PMID: 27635430 PMCID: PMC5065299 DOI: 10.3892/ijmm.2016.2735] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2015] [Accepted: 08/25/2016] [Indexed: 01/01/2023] Open
Abstract
It has been reported that the degeneration of cochlear hair cells is the typical cause of presbycusis (or age-related hearing loss). However, the molecular mechanisms that mediate cochlear hair cell apoptosis are not yet fully understood and there is no effective treatment for this disorder. MicroRNAs (miRNAs or miRs) have been increasingly shown to be associated with age-related diseases and are emerging as promising therapeutic targets. In this study, we investigated whether miR-29b is involved in the degeneration of cochlear hair cells. To examine our hypothesis, nuclear staining and terminal deoxynucleotidyl transferase dUTP nick-end labeling (TUNEL) were used to quantify the hair cell counts. RT-qPCR and western blot analysis were used to examine miR-29b/sirtuin 1 (SIRT1)/proliferator-activated receptor-gamma coactivator 1α (PGC-1α) signaling in cochlear hair cells. We found that there was a significant degeneration of cochlear hair cells and a higher expression of miR-29b in aged C57BL/6 mice compared with young mice. There was also an age-related decrease in the expression of SIRT1 and PGC-1α. In the inner ear cell line, HEI-OC1, miR-29b overexpression (by transfection with miR-29b mimic) inhibited SIRT1 and PGC-1α expression, leading to an increase in mitochondrial dysfunction and apoptosis. Moreover, the inhibition of miR-29b (by transfection with miR-29b inhibitor) increased SIRT1 and PGC-1α expression, while it decreased apoptosis. Taken together, our findings support a link between age-related cochlear hair cell apoptosis and miR-29b/SIRT1/PGC-1α signaling, which may present an attractive pharmacological target for the development of novel drugs for the treatment of age-related hearing loss.
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Affiliation(s)
- Tao Xue
- Department of Otolaryngology, Xijing Hospital, The Fourth Military Medical University, Xi'an, Shaanxi 710003, P.R. China
| | - Li Wei
- Department of Obstetrics and Gynecology, Xijing Hospital, The Fourth Military Medical University, Xi'an, Shaanxi 710003, P.R. China
| | - Ding-Jun Zha
- Department of Otolaryngology, Xijing Hospital, The Fourth Military Medical University, Xi'an, Shaanxi 710003, P.R. China
| | - Jian-Hua Qiu
- Department of Otolaryngology, Xijing Hospital, The Fourth Military Medical University, Xi'an, Shaanxi 710003, P.R. China
| | - Fu-Quan Chen
- Department of Otolaryngology, Xijing Hospital, The Fourth Military Medical University, Xi'an, Shaanxi 710003, P.R. China
| | - Li Qiao
- Department of Otolaryngology, Xijing Hospital, The Fourth Military Medical University, Xi'an, Shaanxi 710003, P.R. China
| | - Yang Qiu
- Department of Otolaryngology, Xijing Hospital, The Fourth Military Medical University, Xi'an, Shaanxi 710003, P.R. China
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Winnik S, Gaul DS, Siciliani G, Lohmann C, Pasterk L, Calatayud N, Weber J, Eriksson U, Auwerx J, van Tits LJ, Lüscher TF, Matter CM. Mild endothelial dysfunction in Sirt3 knockout mice fed a high-cholesterol diet: protective role of a novel C/EBP-β-dependent feedback regulation of SOD2. Basic Res Cardiol 2016; 111:33. [PMID: 27071400 PMCID: PMC4829622 DOI: 10.1007/s00395-016-0552-7] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/22/2015] [Accepted: 03/30/2016] [Indexed: 11/25/2022]
Abstract
Sirtuin 3 (Sirt3) is an NAD+-dependent mitochondrial deacetylase associated with superoxide dismutase 2 (SOD2)-mediated protection from oxidative stress. We have reported accelerated weight gain and impaired metabolic flexibility in atherosclerotic Sirt3−/− mice. Oxidative stress is a hallmark of endothelial dysfunction. Yet, the role of Sirt3 in this context remains unknown. Thus, we aimed to unravel the effects of endogenous Sirt3 on endothelial function and oxidative stress. Knockdown of Sirt3 in human aortic endothelial cells (HAEC) increased intracellular mitochondrial superoxide accumulation, as assessed by electron spin resonance spectroscopy and fluorescence imaging. Endothelium-dependent relaxation of aortic rings from Sirt3−/− mice exposed to a normal diet did not differ from wild-type controls. However, following 12 weeks of high-cholesterol diet and increasing oxidative stress, endothelial function of Sirt3−/− mice was mildly impaired compared with wild-type controls. Relaxation was restored upon enhanced superoxide scavenging using pegylated superoxide dismutase. Knockdown of Sirt3 in cultured HAEC diminished SOD2 specific activity, which was compensated for by a CCAAT/enhancer binding protein beta (C/EBP-β)-dependent transcriptional induction of SOD2. Abrogation of this feedback regulation by simultaneous knockdown of C/EBP-β and Sirt3 exacerbated mitochondrial superoxide accumulation and culminated into endothelial cell death upon prolonged culture. Taken together, Sirt3 deficiency induces a mild, superoxide-dependent endothelial dysfunction in mice fed a high-cholesterol diet. In cultured endothelial cells, a novel C/EBP-β-dependent rescue mechanism maintains net SOD2 activity upon transient knockdown of Sirt3.
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Affiliation(s)
- Stephan Winnik
- Department of Cardiology, University Heart Center Zurich, University Hospital Zurich, Raemistr. 100, 8091, Zurich, Switzerland. .,Center for Molecular Cardiology, University of Zurich, Schlieren, Switzerland.
| | - Daniel S Gaul
- Center for Molecular Cardiology, University of Zurich, Schlieren, Switzerland.,Zurich Center for Integrative Human Physiology, University of Zurich, Zurich, Switzerland
| | - Giovanni Siciliani
- Center for Molecular Cardiology, University of Zurich, Schlieren, Switzerland
| | - Christine Lohmann
- Center for Molecular Cardiology, University of Zurich, Schlieren, Switzerland
| | - Lisa Pasterk
- Center for Molecular Cardiology, University of Zurich, Schlieren, Switzerland.,Institute of Experimental and Clinical Pharmacology, Medical University of Graz, Graz, Austria
| | - Natacha Calatayud
- Center for Molecular Cardiology, University of Zurich, Schlieren, Switzerland
| | - Julien Weber
- Center for Molecular Cardiology, University of Zurich, Schlieren, Switzerland
| | - Urs Eriksson
- Center for Molecular Cardiology, University of Zurich, Schlieren, Switzerland.,Division of Cardiology, Department of Medicine, GZO Regional Health Center Wetzikon, Wetzikon, Switzerland
| | - Johan Auwerx
- Laboratory of Integrative Systems Physiology, School of Life Science, Ecole Polytechnique Fédérale de Lausanne, Lausanne, Switzerland
| | | | - Thomas F Lüscher
- Department of Cardiology, University Heart Center Zurich, University Hospital Zurich, Raemistr. 100, 8091, Zurich, Switzerland.,Center for Molecular Cardiology, University of Zurich, Schlieren, Switzerland.,Zurich Center for Integrative Human Physiology, University of Zurich, Zurich, Switzerland
| | - Christian M Matter
- Department of Cardiology, University Heart Center Zurich, University Hospital Zurich, Raemistr. 100, 8091, Zurich, Switzerland. .,Center for Molecular Cardiology, University of Zurich, Schlieren, Switzerland. .,Zurich Center for Integrative Human Physiology, University of Zurich, Zurich, Switzerland.
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Mitochondrial Redox Signaling and Tumor Progression. Cancers (Basel) 2016; 8:cancers8040040. [PMID: 27023612 PMCID: PMC4846849 DOI: 10.3390/cancers8040040] [Citation(s) in RCA: 55] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2015] [Revised: 02/21/2016] [Accepted: 03/07/2016] [Indexed: 01/10/2023] Open
Abstract
Cancer cell can reprogram their energy production by switching mitochondrial oxidative phosphorylation to glycolysis. However, mitochondria play multiple roles in cancer cells, including redox regulation, reactive oxygen species (ROS) generation, and apoptotic signaling. Moreover, these mitochondrial roles are integrated via multiple interconnected metabolic and redox sensitive pathways. Interestingly, mitochondrial redox proteins biphasically regulate tumor progression depending on cellular ROS levels. Low level of ROS functions as signaling messengers promoting cancer cell proliferation and cancer invasion. However, anti-cancer drug-initiated stress signaling could induce excessive ROS, which is detrimental to cancer cells. Mitochondrial redox proteins could scavenger basal ROS and function as “tumor suppressors” or prevent excessive ROS to act as “tumor promoter”. Paradoxically, excessive ROS often also induce DNA mutations and/or promotes tumor metastasis at various stages of cancer progression. Targeting redox-sensitive pathways and transcriptional factors in the appropriate context offers great promise for cancer prevention and therapy. However, the therapeutics should be cancer-type and stage-dependent.
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Albani D, Pupillo E, Bianchi E, Chierchia A, Martines R, Forloni G, Beghi E. The role of single-nucleotide variants of the energy metabolism-linked genes SIRT3, PPARGC1A and APOE in amyotrophic lateral sclerosis risk. Genes Genet Syst 2016; 91:301-309. [DOI: 10.1266/ggs.16-00023] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Affiliation(s)
- Diego Albani
- Laboratory of Biology of Neurodegenerative Disorders, Department of Neuroscience, IRCCS - Istituto di Ricerche Farmacologiche Mario Negri
| | - Elisabetta Pupillo
- Laboratory of Neurological Diseases, Department of Neuroscience, IRCCS - Istituto di Ricerche Farmacologiche Mario Negri
| | - Elisa Bianchi
- Laboratory of Neurological Diseases, Department of Neuroscience, IRCCS - Istituto di Ricerche Farmacologiche Mario Negri
| | - Armando Chierchia
- Laboratory of Biology of Neurodegenerative Disorders, Department of Neuroscience, IRCCS - Istituto di Ricerche Farmacologiche Mario Negri
| | - Rosalba Martines
- Laboratory of Biology of Neurodegenerative Disorders, Department of Neuroscience, IRCCS - Istituto di Ricerche Farmacologiche Mario Negri
| | - Gianluigi Forloni
- Laboratory of Biology of Neurodegenerative Disorders, Department of Neuroscience, IRCCS - Istituto di Ricerche Farmacologiche Mario Negri
| | - Ettore Beghi
- Laboratory of Neurological Diseases, Department of Neuroscience, IRCCS - Istituto di Ricerche Farmacologiche Mario Negri
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