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Tsai CY, Hsu JSJ, Chen PL, Wu CC. Implementing next-generation sequencing for diagnosis and management of hereditary hearing impairment: a comprehensive review. Expert Rev Mol Diagn 2024:1-13. [PMID: 39194060 DOI: 10.1080/14737159.2024.2396866] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2024] [Accepted: 08/22/2024] [Indexed: 08/29/2024]
Abstract
INTRODUCTION Sensorineural hearing impairment (SNHI), a common childhood disorder with heterogeneous genetic causes, can lead to delayed language development and psychosocial problems. Next-generation sequencing (NGS) offers high-throughput screening and high-sensitivity detection of genetic etiologies of SNHI, enabling clinicians to make informed medical decisions, provide tailored treatments, and improve prognostic outcomes. AREAS COVERED This review covers the diverse etiologies of HHI and the utility of different NGS modalities (targeted sequencing and whole exome/genome sequencing), and includes HHI-related studies on newborn screening, genetic counseling, prognostic prediction, and personalized treatment. Challenges such as the trade-off between cost and diagnostic yield, detection of structural variants, and exploration of the non-coding genome are also highlighted. EXPERT OPINION In the current landscape of NGS-based diagnostics for HHI, there are both challenges (e.g. detection of structural variants and non-coding genome variants) and opportunities (e.g. the emergence of medical artificial intelligence tools). The authors advocate the use of technological advances such as long-read sequencing for structural variant detection, multi-omics analysis for non-coding variant exploration, and medical artificial intelligence for pathogenicity assessment and outcome prediction. By integrating these innovations into clinical practice, precision medicine in the diagnosis and management of HHI can be further improved.
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Affiliation(s)
- Cheng-Yu Tsai
- Graduate Institute of Medical Genomics and Proteomics, National Taiwan University College of Medicine, Taipei, Taiwan
- Department of Otolaryngology, National Taiwan University Hospital, Taipei, Taiwan
| | - Jacob Shu-Jui Hsu
- Graduate Institute of Medical Genomics and Proteomics, National Taiwan University College of Medicine, Taipei, Taiwan
| | - Pei-Lung Chen
- Graduate Institute of Medical Genomics and Proteomics, National Taiwan University College of Medicine, Taipei, Taiwan
- Graduate Institute of Clinical Medicine, National Taiwan University College of Medicine, Taipei, Taiwan
- Institute of Molecular Medicine, National Taiwan University College of Medicine, Taipei, Taiwan
- Department of Medical Genetics, National Taiwan University Hospital, Taipei, Taiwan
| | - Chen-Chi Wu
- Department of Otolaryngology, National Taiwan University Hospital, Taipei, Taiwan
- Graduate Institute of Clinical Medicine, National Taiwan University College of Medicine, Taipei, Taiwan
- Department of Medical Research, National Taiwan University Hospital Hsin-Chu Branch, Hsinchu, Taiwan
- Department of Otolaryngology, National Taiwan University Hospital Hsin-Chu Branch, Hsinchu, Taiwan
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Lebreton L, Hennart B, Baklouti S, Trimouille A, Boyer JC, Becquemont L, Dhaenens CM, Picard N. [Pharmacogenetics of aminoglycoside ototoxicity: State of knowledge and practices - Recommendations of the Francophone Network of Pharmacogenetics (RNPGx)]. Therapie 2024:S0040-5957(24)00068-4. [PMID: 38876950 DOI: 10.1016/j.therap.2024.05.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2023] [Revised: 05/07/2024] [Accepted: 05/23/2024] [Indexed: 06/16/2024]
Abstract
The administration of aminoglycosides can induce nephrotoxicity or ototoxicity, which can be monitored through pharmacological therapeutic drug monitoring. However, there are cases of genetic predisposition to ototoxicity related to the MT-RNR1 gene, which may occur from the first administrations. Pharmacogenetic analysis recommendations have recently been proposed by the Clinical Pharmacogenetics Implementation Consortium (CPIC). The Francophone Pharmacogenetics Network (RNPGx) provides a bibliographic synthesis of this genetic predisposition, as well as professional recommendations. The MT-RNR1 gene codes for mitochondrial 12S rRNA, which constitutes the small subunit of the mitochondrial ribosome. Three variants can be identified: the variants m.1555A>G and m.1494C>T of the MT-RNR1 gene have a 'high' level of evidence regarding the risk of ototoxicity. The variant m.1095T>C has a 'moderate' level of evidence. The search for these variants can be performed in the laboratory if the administration of aminoglycosides can be delayed after obtaining the result. However, if the treatment is urgent, there is currently no rapid test available in France (a 'point-of-care' test is authorized in Great Britain). RNPGx considers: (1) the search for the m.1555A>G, m.1494C>T variants as 'highly recommended' and the m.1095T>C variant as 'moderately recommended' before the administration of an aminoglycoside (if compatible with the medical context). It should be noted that the level of heteroplasmy detected does not modify the recommendation; (2) pharmacogenetic analysis is currently not feasible in situations of short-term aminoglycoside administration, in the absence of an available analytical solution (rapid test to be evaluated in France); (3) the retrospective analysis in case of aminoglycoside-induced ototoxicity is 'recommended'; (4) analysis of relatives is 'recommended'. Through this summary, RNPGx proposes an updated review of the MT-RNR1-aminoglycoside gene-drug pair to serve as a basis for adapting practices regarding pharmacogenetic analysis related to aminoglycoside treatment.
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Affiliation(s)
- Louis Lebreton
- Département de biochimie, hôpital Pellegrin, centre hospitalier universitaire de Bordeaux, 33000 Bordeaux, France.
| | - Benjamin Hennart
- Unité fonctionnelle de toxicologie, CHU de Lille, 59037 Lille, France
| | - Sarah Baklouti
- Laboratoire de pharmacocinétique et toxicologie, institut fédératif de biologie, CHU de Toulouse, 31300 Toulouse, France; INTHERES, Inrae, ENVT, université de Toulouse, 31300 Toulouse, France
| | - Aurélien Trimouille
- Inserm U1211, Rare Diseases: Genetics and Metabolism (MRGM), Bordeaux University, Bordeaux, France; Reference Centre: Maladies Mitochondriales de l'Enfant à l'Adulte (CARAMMEL), University Hospital of Bordeaux, Bordeaux, France; Pathology Department, University Hospital of Bordeaux, 33000 Bordeaux, France
| | | | - Laurent Becquemont
- Inserm UMR 1018, CESP, MOODS Team, faculté de médecine, université Paris-Saclay, 94275 Le Kremlin-Bicêtre, France; Centre de recherche clinique, hôpital de Bicêtre, hôpitaux universitaires Paris-Saclay, Assistance publique-Hôpitaux de Paris, 94275 Le Kremlin-Bicêtre, France
| | - Claire-Marie Dhaenens
- Inserm, U1172 - LilNCog - Lille Neuroscience & Cognition, University of Lille, CHU de Lille, 59000 Lille, France
| | - Nicolas Picard
- Service de pharmacologie, toxicologie et pharmacovigilance, centre de biologie et de recherche en santé (CBRS), CHU de Limoges, 87042 Limoges, France
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Pavlidis P, Tseriotis VS, Papadopoulou K, Karachrysafi S, Sardeli C, Gouveris H, Malliou F, Kavvadas D, Papamitsou T, Sioga A, Anastasiadou P, Kouvelas D. Role of Memantine in Limiting Cochleotoxicity in Rats. Indian J Otolaryngol Head Neck Surg 2024; 76:2464-2473. [PMID: 38883494 PMCID: PMC11169147 DOI: 10.1007/s12070-024-04521-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2023] [Accepted: 01/08/2024] [Indexed: 06/18/2024] Open
Abstract
Οur aim was to test whether amikacin's well-known cochleotoxic effects could be suppressed, depending on whether an NMDA-antagonist (memantine) was administered simultaneously with or after amikacin treatment. Forty Wistar rats were used in this experiment. Ten rats acted as controls and received no medication (group A). Amikacin (200 mg/kg) was administered intraperitoneally (i.p.) once daily for 14 days to 10 animals in group B; amikacin (200 mg/kg) was administered concurrently with memantine (10 mg/kg, i.p., once daily) to the same 10 animals in group C. Group D was given intraperitoneal memantine (10 mg/kg, once daily) for 14 days following a 2-week amikacin treatment. The cochlear activity of the right ear was tested using DPOAE in conscious animals. All animals were sacrificed at the conclusion of the experiment and both cochleae were collected for histological and immunohistochemical analysis. All groups treated with amikacin showed decreased cochlear activity, as testified by decreased DPOAE-amplitudes compared to the pre-treatment state. In the rats of group B, the DPOAE reduction was more pronounced. On histologic exam, the cochlear structures of group C rats and, although to a lesser extent, group D rats showed less severe cochlea damage. Memantine plays a protective role, resulting in restoring partially cochlear structures when administered either simultaneously with or after completion of amikacin i.p. treatment in rats.
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Affiliation(s)
- Pavlos Pavlidis
- Department of Otorhinolarhingology / Head & Neck Surgery, University Medical Center Mainz, Mainz, Germany
- Laboratory for Clinical Pharmacology, School of Medicine, Faculty of Health Sciences, Aristotle University Thessaloniki, Thessaloniki, Greece
| | - Vasilis Spyridon Tseriotis
- Laboratory for Clinical Pharmacology, School of Medicine, Faculty of Health Sciences, Aristotle University Thessaloniki, Thessaloniki, Greece
| | - Kyriaki Papadopoulou
- Laboratory of Histology-Embryology, School of Medicine, Faculty of Health Sciences, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | - Sophia Karachrysafi
- Laboratory of Histology-Embryology, School of Medicine, Faculty of Health Sciences, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | - Chrysanthi Sardeli
- Laboratory for Clinical Pharmacology, School of Medicine, Faculty of Health Sciences, Aristotle University Thessaloniki, Thessaloniki, Greece
| | - Haralampos Gouveris
- Department of Otorhinolarhingology / Head & Neck Surgery, University Medical Center Mainz, Mainz, Germany
| | - Faye Malliou
- Laboratory for Clinical Pharmacology, School of Medicine, Faculty of Health Sciences, Aristotle University Thessaloniki, Thessaloniki, Greece
| | - Dimitrios Kavvadas
- Laboratory of Histology-Embryology, School of Medicine, Faculty of Health Sciences, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | - Theodora Papamitsou
- Laboratory of Histology-Embryology, School of Medicine, Faculty of Health Sciences, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | - Antonia Sioga
- Laboratory of Histology-Embryology, School of Medicine, Faculty of Health Sciences, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | - Penelope Anastasiadou
- Department of Oral Medicine/Pathology, School of Dentistry, Faculty of Health Sciences, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | - Dimitrios Kouvelas
- Laboratory for Clinical Pharmacology, School of Medicine, Faculty of Health Sciences, Aristotle University Thessaloniki, Thessaloniki, Greece
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Elmorsy E, Alshammari DM, Alanazi MA, Alshammari KHS, Alanazi RS, Alanazi RMZ, Alruwaili SM, Alanazi GKH. Awareness and Attitude About Ototoxic Drugs Among Medical Doctors in Arar City, Saudi Arabia. Cureus 2024; 16:e60429. [PMID: 38882992 PMCID: PMC11179586 DOI: 10.7759/cureus.60429] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/16/2024] [Indexed: 06/18/2024] Open
Abstract
OBJECTIVES The purpose of this study was to assess the awareness of ototoxicity among medical doctors in Arar City, Saudi Arabia. METHODS This is a cross-sectional study based on a pre-formed validated questionnaire (Appendix) that included three sections covering participants' demographic data (three questions), their attitudes (five questions), and knowledge (13 questions) regarding drug-induced ototoxicity. RESULTS After obtaining their informed consent, 213 physicians from government and private sector health facilities in Arar were enrolled in the study. Interns and general practitioners represented 57.8% of the participants; consultants represented 17.8%. Only 71.8% of participants were interested in drug-induced ototoxicity, while 26.3% considered ototoxicity a rare complication. Approximately 90% of the participants were knowledgeable about the adverse effects of drugs on the vestibulocochlear system, and 26.7% reported having experienced cases of drug-induced ototoxicity in their practice. Participants showed an overall knowledge score about ototoxicity of 9.3±3.27 (out of 14). The knowledge score was significantly higher (p-value=0.0007) for participants with more years of clinical experience. The most widely known ototoxic drug for participants was frusemide (72.3%), followed by aminoglycoside (68.5%), while acetaminophen (44.1%) ototoxicity was the least known among participants. CONCLUSION Awareness of drug-induced ototoxicity is satisfactory among physicians in the Northern Borders region. However, workshops about all types of drugs with ototoxic effects and the main lines for the management of drug-induced ototoxicity are recommended to increase awareness.
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Affiliation(s)
| | | | | | | | - Reem S Alanazi
- College of Medicine, Northern Border University, Arar, SAU
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D'Achille G, Morroni G. Side effects of antibiotics and perturbations of mitochondria functions. INTERNATIONAL REVIEW OF CELL AND MOLECULAR BIOLOGY 2023; 377:121-139. [PMID: 37268348 DOI: 10.1016/bs.ircmb.2023.03.009] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Antibiotics are one of the greatest discoveries of medicine of the past century. Despite their invaluable contribution to infectious disease, their administration could lead to side effects that in some cases are serious. The toxicity of some antibiotics is in part due to their interaction with mitochondria: these organelles derive from a bacterial ancestor and possess specific translation machinery that shares similarities with the bacterial counterpart. In other cases, the antibiotics could interfere with mitochondrial functions even if their main bacterial targets are not shared with the eukaryotic cells. The purpose of this review is to summarize the effects of antibiotics administration on mitochondrial homeostasis and the opportunity that some of these molecules could represent in cancer treatment. The importance of antimicrobial therapy is unquestionable, but the identification of interaction with eukaryotic cells and in particular with mitochondria is crucial to reduce the toxicity of these drugs and to explore other useful medical applications.
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Affiliation(s)
- Gloria D'Achille
- Microbiology Unit, Department of Biomedical Sciences and Public Health, Polytechnic University of Marche, Ancona, Italy
| | - Gianluca Morroni
- Microbiology Unit, Department of Biomedical Sciences and Public Health, Polytechnic University of Marche, Ancona, Italy.
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Wong HTC, Lukasz D, Drerup CM, Kindt KS. In vivo investigation of mitochondria in lateral line afferent neurons and hair cells. Hear Res 2023; 431:108740. [PMID: 36948126 PMCID: PMC10079644 DOI: 10.1016/j.heares.2023.108740] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/01/2022] [Revised: 02/17/2023] [Accepted: 03/12/2023] [Indexed: 03/16/2023]
Abstract
To process sensory stimuli, intense energy demands are placed on hair cells and primary afferents. Hair cells must both mechanotransduce and maintain pools of synaptic vesicles for neurotransmission. Furthermore, both hair cells and afferent neurons must continually maintain a polarized membrane to propagate sensory information. These processes are energy demanding and therefore both cell types are critically reliant on mitochondrial health and function for their activity and maintenance. Based on these demands, it is not surprising that deficits in mitochondrial health can negatively impact the auditory and vestibular systems. In this review, we reflect on how mitochondrial function and dysfunction are implicated in hair cell-mediated sensory system biology. Specifically, we focus on live imaging approaches that have been applied to study mitochondria using the zebrafish lateral-line system. We highlight the fluorescent dyes and genetically encoded biosensors that have been used to study mitochondria in lateral-line hair cells and afferent neurons. We then describe the impact this in vivo work has had on the field of mitochondrial biology as well as the relationship between mitochondria and sensory system development, function, and survival. Finally, we delineate the areas in need of further exploration. This includes in vivo analyses of mitochondrial dynamics and biogenesis, which will round out our understanding of mitochondrial biology in this sensitive sensory system.
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Affiliation(s)
- Hiu-Tung C Wong
- Department of Integrative Biology, University of Wisconsin-Madison, Madison, WI 53706, USA
| | - Daria Lukasz
- Section on Sensory Cell Development and Function, National Institute of Deafness and other Communication Disorders, National Institutes of Health, Bethesda, MD 20892, USA
| | - Catherine M Drerup
- Department of Integrative Biology, University of Wisconsin-Madison, Madison, WI 53706, USA.
| | - Katie S Kindt
- Section on Sensory Cell Development and Function, National Institute of Deafness and other Communication Disorders, National Institutes of Health, Bethesda, MD 20892, USA.
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7
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Freimane L, Barkāne L, Kivrane A, Sadovska D, Ulanova V, Ranka R. Assessment of Amikacin- and Capreomycin-Related Adverse Drug Reactions in Patients with Multidrug-Resistant Tuberculosis and Exploring the Role of Genetic Factors. J Pers Med 2023; 13:jpm13040599. [PMID: 37108985 PMCID: PMC10145258 DOI: 10.3390/jpm13040599] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2022] [Revised: 03/24/2023] [Accepted: 03/25/2023] [Indexed: 03/31/2023] Open
Abstract
Following the introduction of all-oral treatment regimens for patients with drug-resistant tuberculosis (TB), second-line injectable drug applications have been reduced in the last few years. However, they are still important for anti-TB therapy. This study aims to analyze the occurrence of amikacin- and capreomycin-related adverse drug reactions (ADR) in patients with multidrug-resistant tuberculosis (MDR-TB) and evaluate the role of multiple patient-, disease-, and therapy-related factors on the frequency of the observed adverse events. In addition, the possible role of genetic risk factors was studied by full-length mitochondrial DNA sequencing. Toward this aim, we retrospectively evaluated 47 patients with MDR-TB who received amikacin and/or capreomycin. In total, 16 (34.0%) patients developed ototoxicity and 13 (27.7%) developed nephrotoxicity, including 3 (6.4%) patients who experienced both adverse events. Ototoxicity development was more common in patients who received amikacin. No other factors showed a significant impact. Nephrotoxicity was likely associated with previous renal health impairment. Full mitochondrial genome sequencing did not reveal any specific ADR-associated variants, and results showed no differences in adverse event occurrence for any specific variants, mutation count, or mitochondrial haplogroup. The absence of the previously reported ototoxicity-related mtDNA variants in our patients with ototoxicity and nephrotoxicity highlighted the complex nature of the ADR occurrence.
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8
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O'Sullivan JDB, Bullen A, Mann ZF. Mitochondrial form and function in hair cells. Hear Res 2023; 428:108660. [PMID: 36525891 DOI: 10.1016/j.heares.2022.108660] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/30/2022] [Revised: 11/07/2022] [Accepted: 11/23/2022] [Indexed: 11/27/2022]
Abstract
Hair cells (HCs) are specialised sensory receptors residing in the neurosensory epithelia of inner ear sense organs. The precise morphological and physiological properties of HCs allow us to perceive sound and interact with the world around us. Mitochondria play a significant role in normal HC function and are also intricately involved in HC death. They generate ATP essential for sustaining the activity of ion pumps, Ca2+ transporters and the integrity of the stereociliary bundle during transduction as well as regulating cytosolic calcium homoeostasis during synaptic transmission. Advances in imaging techniques have allowed us to study mitochondrial populations throughout the HC, and how they interact with other organelles. These analyses have identified distinct mitochondrial populations between the apical and basolateral portions of the HC, in which mitochondrial morphology appears determined by the physiological processes in the different cellular compartments. Studies in HCs across species show that ototoxic agents, ageing and noise damage directly impact mitochondrial structure and function resulting in HC death. Deciphering the molecular mechanisms underlying this mitochondrial sensitivity, and how their morphology relates to their function during HC death, requires that we first understand this relationship in the context of normal HC function.
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Affiliation(s)
- James D B O'Sullivan
- Centre for Craniofacial and Regenerative Biology, Faculty of Dentistry, Oral, Craniofacial Sciences, King's College London, London SE1 9RT, U.K
| | - Anwen Bullen
- UCL Ear Institute, University College London, London WC1×8EE, U.K.
| | - Zoë F Mann
- Centre for Craniofacial and Regenerative Biology, Faculty of Dentistry, Oral, Craniofacial Sciences, King's College London, London SE1 9RT, U.K.
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Koffler-Brill T, Noy Y, Avraham KB. The long and short: Non-coding RNAs in the mammalian inner ear. Hear Res 2023; 428:108666. [PMID: 36566643 PMCID: PMC9883734 DOI: 10.1016/j.heares.2022.108666] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/06/2022] [Revised: 10/21/2022] [Accepted: 12/12/2022] [Indexed: 12/23/2022]
Abstract
Non-coding RNAs (ncRNAs) play a critical role in the entire body, and their mis-regulation is often associated with disease. In parallel with the advances in high-throughput sequencing technologies, there is a great deal of focus on this broad class of RNAs. Although these molecules are not translated into proteins, they are now well established as significant regulatory components in many biological pathways and pathological conditions. ncRNAs can be roughly divided into two main sub-groups based on the length of the transcript, with both the small and long non-coding RNAs having diverse regulatory functions. The smaller length group includes ribosomal RNAs (rRNA), transfer RNAs (tRNA), small nuclear RNAs (snRNA), small nucleolar RNAs (snoRNA), microRNAs (miRNA), small interfering RNAs (siRNA), and PIWI-associated RNAs (piRNA). The longer length group includes linear long non-coding RNAs (lncRNA) and circular RNAs (circRNA). This review is designed to present the different classes of small and long ncRNA molecules and describe some of their known roles in physiological and pathological conditions, as well as methods used to assess the validity and function of miRNAs and lncRNAs, with a focus on their role and functions in the inner ear, hearing and deafness.
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Affiliation(s)
- Tal Koffler-Brill
- Department of Human Molecular Genetics and Biochemistry, Faculty of Medicine and Sagol School of Neuroscience, Tel Aviv University, Tel Aviv 6997801, Israel
| | - Yael Noy
- Department of Human Molecular Genetics and Biochemistry, Faculty of Medicine and Sagol School of Neuroscience, Tel Aviv University, Tel Aviv 6997801, Israel
| | - Karen B Avraham
- Department of Human Molecular Genetics and Biochemistry, Faculty of Medicine and Sagol School of Neuroscience, Tel Aviv University, Tel Aviv 6997801, Israel.
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Shukarova Stefanovska E, Davceva Chakar M, Bozhinovski G. Mitochondrial DNA mutations and the risk for aminoglycoside-induced deafness. MAKEDONSKO FARMACEVTSKI BILTEN 2022. [DOI: 10.33320/maced.pharm.bull.2022.68.03.198] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023] Open
Affiliation(s)
- Emilija Shukarova Stefanovska
- Research Center for Genetic Engineering and Biotechnology “Georgi D.Efremov”, Macedonian Academy of Sciences and Arts, Av. Krste Misirkov 2, 1000 Skopje, R.N.Macedonia
| | - Marina Davceva Chakar
- University Clinic of Otorhinolaryngology, Faculty of Medicine, Ss. Cyril and Methodius University, Vodnjanska 17, 1000 Skopje, Republic of North Macedonia
| | - Gjorgji Bozhinovski
- Research Center for Genetic Engineering and Biotechnology “Georgi D.Efremov”, Macedonian Academy of Sciences and Arts, Av. Krste Misirkov 2, 1000 Skopje, R.N.Macedonia
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11
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Faille A, Warren AJ. Teaching old drugs new tricks. eLife 2022; 11:e84702. [PMID: 36480270 PMCID: PMC9731568 DOI: 10.7554/elife.84702] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
Understanding the mechanism by which streptomycin binds to the small subunit of the mitoribosome may help researchers design less toxic derivatives of this antibiotic.
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Affiliation(s)
- Alexandre Faille
- Cambridge Institute for Medical Research, University of CambridgeCambridgeUnited Kingdom
| | - Alan J Warren
- The Department of Haematology, University of CambridgeCambridgeUnited Kingdom
- Wellcome Trust-Medical Research Council Stem Cell Institute, University of CambridgeCambridgeUnited Kingdom
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12
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Bennett CF, Ronayne CT, Puigserver P. Targeting adaptive cellular responses to mitochondrial bioenergetic deficiencies in human disease. FEBS J 2022; 289:6969-6993. [PMID: 34510753 PMCID: PMC8917243 DOI: 10.1111/febs.16195] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2021] [Revised: 07/25/2021] [Accepted: 09/10/2021] [Indexed: 01/13/2023]
Abstract
Mitochondrial dysfunction is increasingly appreciated as a central contributor to human disease. Oxidative metabolism at the mitochondrial respiratory chain produces ATP and is intricately tied to redox homeostasis and biosynthetic pathways. Metabolic stress arising from genetic mutations in mitochondrial genes and environmental factors such as malnutrition or overnutrition is perceived by the cell and leads to adaptive and maladaptive responses that can underlie pathology. Here, we will outline cellular sensors that react to alterations in energy production, organellar redox, and metabolites stemming from mitochondrial disease (MD) mutations. MD is a heterogeneous group of disorders primarily defined by defects in mitochondrial oxidative phosphorylation from nuclear or mitochondrial-encoded gene mutations. Preclinical therapies that improve fitness of MD mouse models have been recently identified. Targeting metabolic/energetic deficiencies, maladaptive signaling processes, and hyper-oxygenation of tissues are all strategies aside from direct genetic approaches that hold therapeutic promise. A further mechanistic understanding of these curative processes as well as the identification of novel targets will significantly impact mitochondrial biology and disease research.
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Affiliation(s)
- Christopher F Bennett
- Department of Cancer Biology, Dana-Farber Cancer Institute, Boston, MA, USA
- Department of Cell Biology, Harvard Medical School, Boston, MA, USA
| | - Conor T Ronayne
- Department of Cancer Biology, Dana-Farber Cancer Institute, Boston, MA, USA
- Department of Cell Biology, Harvard Medical School, Boston, MA, USA
| | - Pere Puigserver
- Department of Cancer Biology, Dana-Farber Cancer Institute, Boston, MA, USA
- Department of Cell Biology, Harvard Medical School, Boston, MA, USA
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Activation of the Mitochondrial Unfolded Protein Response: A New Therapeutic Target? Biomedicines 2022; 10:biomedicines10071611. [PMID: 35884915 PMCID: PMC9313171 DOI: 10.3390/biomedicines10071611] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2022] [Revised: 07/01/2022] [Accepted: 07/04/2022] [Indexed: 12/18/2022] Open
Abstract
Mitochondrial dysfunction is a key hub that is common to many diseases. Mitochondria’s role in energy production, calcium homeostasis, and ROS balance makes them essential for cell survival and fitness. However, there are no effective treatments for most mitochondrial and related diseases to this day. Therefore, new therapeutic approaches, such as activation of the mitochondrial unfolded protein response (UPRmt), are being examined. UPRmt englobes several compensation processes related to proteostasis and antioxidant mechanisms. UPRmt activation, through an hormetic response, promotes cell homeostasis and improves lifespan and disease conditions in biological models of neurodegenerative diseases, cardiopathies, and mitochondrial diseases. Although UPRmt activation is a promising therapeutic option for many conditions, its overactivation could lead to non-desired side effects, such as increased heteroplasmy of mitochondrial DNA mutations or cancer progression in oncologic patients. In this review, we present the most recent UPRmt activation therapeutic strategies, UPRmt’s role in diseases, and its possible negative consequences in particular pathological conditions.
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14
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Mahshid SS, Higazi AM, Ogier JM, Dabdoub A. Extracellular Biomarkers of Inner Ear Disease and Their Potential for Point-of-Care Diagnostics. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2022; 9:e2104033. [PMID: 34957708 PMCID: PMC8948604 DOI: 10.1002/advs.202104033] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/11/2021] [Revised: 11/09/2021] [Indexed: 06/14/2023]
Abstract
Rapid diagnostic testing has become a mainstay of patient care, using easily obtained samples such as blood or urine to facilitate sample analysis at the point-of-care. These tests rely on the detection of disease or organ-specific biomarkers that have been well characterized for a particular disorder. Currently, there is no rapid diagnostic test for hearing loss, which is one of the most prevalent sensory disorders in the world. In this review, potential biomarkers for inner ear-related disorders, their detection, and quantification in bodily fluids are described. The authors discuss lesion-specific changes in cell-free deoxyribonucleic acids (DNAs), micro-ribonucleic acids (microRNAs), proteins, and metabolites, in addition to recent biosensor advances that may facilitate rapid and precise detection of these molecules. Ultimately, these biomarkers may be used to provide accurate diagnostics regarding the site of damage in the inner ear, providing practical information for individualized therapy and assessment of treatment efficacy in the future.
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Affiliation(s)
- Sahar Sadat Mahshid
- Biological SciencesSunnybrook Research InstituteSunnybrook Health Sciences CentreTorontoONM4N 3M5Canada
| | - Aliaa Monir Higazi
- Biological SciencesSunnybrook Research InstituteSunnybrook Health Sciences CentreTorontoONM4N 3M5Canada
- Department of Clinical and Chemical PathologyMinia UniversityMinia61519Egypt
| | - Jacqueline Michelle Ogier
- Biological SciencesSunnybrook Research InstituteSunnybrook Health Sciences CentreTorontoONM4N 3M5Canada
| | - Alain Dabdoub
- Biological SciencesSunnybrook Research InstituteSunnybrook Health Sciences CentreTorontoONM4N 3M5Canada
- Department of Otolaryngology–Head & Neck SurgeryUniversity of TorontoTorontoONM5G 2C4Canada
- Department of Laboratory Medicine and PathobiologyUniversity of TorontoTorontoONM5S 1A8Canada
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15
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Itoh Y, Singh V, Khawaja A, Naschberger A, Nguyen MD, Rorbach J, Amunts A. Structure of the mitoribosomal small subunit with streptomycin reveals Fe-S clusters and physiological molecules. eLife 2022; 11:77460. [PMID: 36480258 PMCID: PMC9731571 DOI: 10.7554/elife.77460] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2022] [Accepted: 10/27/2022] [Indexed: 12/13/2022] Open
Abstract
The mitoribosome regulates cellular energy production, and its dysfunction is associated with aging. Inhibition of the mitoribosome can be caused by off-target binding of antimicrobial drugs and was shown to be coupled with a bilateral decreased visual acuity. Previously, we reported mitochondria-specific protein aspects of the mitoribosome, and in this article we present a 2.4-Å resolution structure of the small subunit in a complex with the anti-tuberculosis drug streptomycin that reveals roles of non-protein components. We found iron-sulfur clusters that are coordinated by different mitoribosomal proteins, nicotinamide adenine dinucleotide (NAD) associated with rRNA insertion, and posttranslational modifications. This is the first evidence of inter-protein coordination of iron-sulfur, and the finding of iron-sulfur clusters and NAD as fundamental building blocks of the mitoribosome directly links to mitochondrial disease and aging. We also report details of streptomycin interactions, suggesting that the mitoribosome-bound streptomycin is likely to be in hydrated gem-diol form and can be subjected to other modifications by the cellular milieu. The presented approach of adding antibiotics to cultured cells can be used to define their native structures in a bound form under more physiological conditions, and since streptomycin is a widely used drug for treatment, the newly resolved features can serve as determinants for targeting.
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Affiliation(s)
- Yuzuru Itoh
- Science for Life Laboratory, Department of Biochemistry and Biophysics, Stockholm UniversityStockholmSweden
| | - Vivek Singh
- Science for Life Laboratory, Department of Biochemistry and Biophysics, Stockholm UniversityStockholmSweden
| | - Anas Khawaja
- Department of Medical Biochemistry and Biophysics, Karolinska InstituteStockholmSweden,Max Planck Institute Biology of Ageing - Karolinska Institutet Laboratory, Karolinska InstitutetStockholmSweden
| | - Andreas Naschberger
- Science for Life Laboratory, Department of Biochemistry and Biophysics, Stockholm UniversityStockholmSweden
| | - Minh Duc Nguyen
- Department of Medical Biochemistry and Biophysics, Karolinska InstituteStockholmSweden,Max Planck Institute Biology of Ageing - Karolinska Institutet Laboratory, Karolinska InstitutetStockholmSweden
| | - Joanna Rorbach
- Department of Medical Biochemistry and Biophysics, Karolinska InstituteStockholmSweden,Max Planck Institute Biology of Ageing - Karolinska Institutet Laboratory, Karolinska InstitutetStockholmSweden
| | - Alexey Amunts
- Science for Life Laboratory, Department of Biochemistry and Biophysics, Stockholm UniversityStockholmSweden
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16
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Budgell EP, Davies TJ, Donker T, Hopkins S, Wyllie DH, Peto TEA, Gill MJ, Llewelyn MJ, Walker AS. Impact of hospital antibiotic use on patient-level risk of death among 36,124,372 acute and medical admissions in England. J Infect 2021; 84:311-320. [PMID: 34963640 DOI: 10.1016/j.jinf.2021.12.029] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2021] [Revised: 12/03/2021] [Accepted: 12/17/2021] [Indexed: 12/29/2022]
Abstract
OBJECTIVES Initiatives to curb hospital antibiotic use might be associated with harm from under-treatment. We examined the extent to which variation in hospital antibiotic prescribing is associated with mortality risk in acute/general medicine inpatients. METHODS This ecological analysis examined Hospital Episode Statistics from 36,124,372 acute/general medicine admissions (≥16y) to 135 acute hospitals in England, 01/April/2010-31/March/2017. Random-effects meta-regression was used to investigate whether heterogeneity in adjusted 30-day mortality was associated with hospital-level antibiotic use, measured in defined-daily-doses (DDD)/1,000 bed-days. Models also considered DDDs/1,000 admissions and DDDs for narrow-spectrum/broad-spectrum antibiotics, parenteral/oral, and local interpretations of World Health Organization Access, Watch, and Reserve antibiotics. RESULTS Hospital-level antibiotic DDDs/1,000 bed-days varied 15-fold with comparable variation in broad-spectrum, parenteral, and Reserve antibiotic use. After extensive adjusting for hospital case-mix, the probability of 30-day mortality changed -0.010% (95% CI: -0.064,+0.044) for each increase of 500 hospital-level antibiotic DDDs/1,000 bed-days. Analyses of other metrics of antibiotic use showed no consistent association with mortality risk. CONCLUSIONS We found no evidence that wide variation in hospital antibiotic use is associated with adjusted mortality risk in acute/general medicine inpatients. Using low-prescribing hospitals as benchmarks could help drive safe and substantial reductions in antibiotic consumption of up-to one-third in this population.
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Affiliation(s)
- Eric P Budgell
- Nuffield Department of Medicine, University of Oxford, Oxford, UK.
| | - Timothy J Davies
- Nuffield Department of Medicine, University of Oxford, Oxford, UK
| | - Tjibbe Donker
- Institute for Infection Prevention and Hospital Epidemiology, Faculty of Medicine, University of Freiburg, Freiburg, Germany
| | - Susan Hopkins
- National Infection Service, Public Health England, UK
| | | | - Tim E A Peto
- Nuffield Department of Medicine, University of Oxford, Oxford, UK; NIHR Biomedical Research Centre, Oxford, UK; National Institute for Health Research Health Protection Research Unit in Healthcare Associated Infections and Antimicrobial Resistance, Oxford, UK
| | - Martin J Gill
- Clinical Microbiology, University Hospitals Birmingham NHS Foundation Trust, Queen Elizabeth Hospital Birmingham, Birmingham, UK
| | - Martin J Llewelyn
- Global Health and Infectious Diseases, Brighton and Sussex Medical School, University of Sussex, Brighton, UK; Department of Microbiology and Infection, Royal Sussex County Hospital, Brighton, UK
| | - A Sarah Walker
- Nuffield Department of Medicine, University of Oxford, Oxford, UK; NIHR Biomedical Research Centre, Oxford, UK; National Institute for Health Research Health Protection Research Unit in Healthcare Associated Infections and Antimicrobial Resistance, Oxford, UK
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17
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Shao Y, Wang Y, Yuan Y, Xie Y. A systematic review on antibiotics misuse in livestock and aquaculture and regulation implications in China. THE SCIENCE OF THE TOTAL ENVIRONMENT 2021; 798:149205. [PMID: 34375247 DOI: 10.1016/j.scitotenv.2021.149205] [Citation(s) in RCA: 136] [Impact Index Per Article: 45.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/08/2021] [Revised: 07/14/2021] [Accepted: 07/18/2021] [Indexed: 06/13/2023]
Abstract
China is one of the largest producers and consumers of antibiotics, and China is a larger producer of livestock farming and aquaculture in the world. The livestock farming and aquaculture industry is a major area of antibiotic misuse, which has caused serious antibiotic residues and environment pollution. The antibiotic residues exceeding the standard may lead to antibiotic resistances in animals or human bodies, which poses a threat to human health. In this context, this study tries to systematically review the current situation of antibiotic misuse in livestock and aquaculture in China, and put forward corresponding regulatiory measures for the central government. Based on the status quo of livestock farming and aquaculture in China, this study reviewed antibiotic misuse in livestock farming and aquaculture and antibiotic resistance in China, introduced China's current policies on antibiotic regulation and the gap between China and developed countries, and analyzed the implications of current regulatory policies on animal health and productivity. At last, we put forward suggestions for the future antibiotic regulation, including strictly implementing the relevant laws and regulations, formulating specific supporting measures, encouraging the research and development of antibiotic substitutes, introducing advanced technologies for supervision and regulation, strengthening the publicity of science popularization and enhancing the public's awareness of the rational use of antibiotics. If these policy recommendations can be implemented, they will significantly promote the regulation of antibiotic abuse.
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Affiliation(s)
- Yitian Shao
- The New Types Key Think Tank of Zhejiang Province "China Research Institute of Regulation and Public Policy", Zhejiang University of Finance & Economics, Hangzhou 310018, China; China Institute of Regulation Research, Zhejiang University of Finance & Economics, Hangzhou 310018, China
| | - Yiping Wang
- Hangzhou City Health Bureau, Hangzhou, 310005, China
| | - Yiwen Yuan
- China Institute of Regulation Research, Zhejiang University of Finance & Economics, Hangzhou 310018, China
| | - Yujing Xie
- The New Types Key Think Tank of Zhejiang Province "China Research Institute of Regulation and Public Policy", Zhejiang University of Finance & Economics, Hangzhou 310018, China; China Institute of Regulation Research, Zhejiang University of Finance & Economics, Hangzhou 310018, China.
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18
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Coffin AB, Boney R, Hill J, Tian C, Steyger PS. Detecting Novel Ototoxins and Potentiation of Ototoxicity by Disease Settings. Front Neurol 2021; 12:725566. [PMID: 34489859 PMCID: PMC8418111 DOI: 10.3389/fneur.2021.725566] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2021] [Accepted: 07/22/2021] [Indexed: 12/24/2022] Open
Abstract
Over 100 drugs and chemicals are associated with permanent hearing loss, tinnitus, and vestibular deficits, collectively known as ototoxicity. The ototoxic potential of drugs is rarely assessed in pre-clinical drug development or during clinical trials, so this debilitating side-effect is often discovered as patients begin to report hearing loss. Furthermore, drug-induced ototoxicity in adults, and particularly in elderly patients, may go unrecognized due to hearing loss from a variety of etiologies because of a lack of baseline assessments immediately prior to novel therapeutic treatment. During the current pandemic, there is an intense effort to identify new drugs or repurpose FDA-approved drugs to treat COVID-19. Several potential COVID-19 therapeutics are known ototoxins, including chloroquine (CQ) and lopinavir-ritonavir, demonstrating the necessity to identify ototoxic potential in existing and novel medicines. Furthermore, several factors are emerging as potentiators of ototoxicity, such as inflammation (a hallmark of COVID-19), genetic polymorphisms, and ototoxic synergy with co-therapeutics, increasing the necessity to evaluate a drug's potential to induce ototoxicity under varying conditions. Here, we review the potential of COVID-19 therapies to induce ototoxicity and factors that may compound their ototoxic effects. We then discuss two models for rapidly detecting the potential for ototoxicity: mammalian auditory cell lines and the larval zebrafish lateral line. These models offer considerable value for pre-clinical drug development, including development of COVID-19 therapies. Finally, we show the validity of in silico screening for ototoxic potential using a computational model that compares structural similarity of compounds of interest with a database of known ototoxins and non-ototoxins. Preclinical screening at in silico, in vitro, and in vivo levels can provide an earlier indication of the potential for ototoxicity and identify the subset of candidate therapeutics for treating COVID-19 that need to be monitored for ototoxicity as for other widely-used clinical therapeutics, like aminoglycosides and cisplatin.
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Affiliation(s)
| | | | - Jordan Hill
- Washington State University Vancouver, Vancouver, WA, United States
| | - Cong Tian
- Department of Biomedical Sciences, School of Medicine, Creighton University, Omaha, NE, United States
| | - Peter S. Steyger
- Department of Biomedical Sciences, School of Medicine, Creighton University, Omaha, NE, United States
- National Center for Rehabilitative Auditory Research, Portland, OR, United States
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19
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Mitochondria and Antibiotics: For Good or for Evil? Biomolecules 2021; 11:biom11071050. [PMID: 34356674 PMCID: PMC8301944 DOI: 10.3390/biom11071050] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2021] [Revised: 07/12/2021] [Accepted: 07/15/2021] [Indexed: 01/16/2023] Open
Abstract
The discovery and application of antibiotics in the common clinical practice has undeniably been one of the major medical advances in our times. Their use meant a drastic drop in infectious diseases-related mortality and contributed to prolonging human life expectancy worldwide. Nevertheless, antibiotics are considered by many a double-edged sword. Their extensive use in the past few years has given rise to a global problem: antibiotic resistance. This factor and the increasing evidence that a wide range of antibiotics can damage mammalian mitochondria, have driven a significant sector of the medical and scientific communities to advise against the use of antibiotics for purposes other to treating severe infections. Notwithstanding, a notorious number of recent studies support the use of these drugs to treat very diverse conditions, ranging from cancer to neurodegenerative or mitochondrial diseases. In this context, there is great controversy on whether the risks associated to antibiotics outweigh their promising beneficial features. The aim of this review is to provide insight in the topic, purpose for which the most relevant findings regarding antibiotic therapies have been discussed.
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20
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Fu X, Wan P, Li P, Wang J, Guo S, Zhang Y, An Y, Ye C, Liu Z, Gao J, Yang J, Fan J, Chai R. Mechanism and Prevention of Ototoxicity Induced by Aminoglycosides. Front Cell Neurosci 2021; 15:692762. [PMID: 34211374 PMCID: PMC8239227 DOI: 10.3389/fncel.2021.692762] [Citation(s) in RCA: 48] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2021] [Accepted: 05/20/2021] [Indexed: 02/02/2023] Open
Abstract
Aminoglycosides, a class of clinically important drugs, are widely used worldwide against gram-negative bacterial infections. However, there is growing evidence that aminoglycosides can cause hearing loss or balance problems. In this article, we mainly introduce the main mechanism of ototoxicity induced by aminoglycosides. Genetic analysis showed that the susceptibility of aminoglycosides was attributable to mutations in mtDNA, especially A1555G and C1494T mutations in 12S rRNA. In addition, the overexpression of NMDA receptors and the formation of free radicals also play an important role. Understanding the mechanism of ototoxicity induced by aminoglycosides is helpful to develop new therapeutic methods to protect hearing. In this article, the prevention methods of ototoxicity induced by aminoglycosides were introduced from the upstream and downstream aspects.
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Affiliation(s)
- Xiaolong Fu
- State Key Laboratory of Bioelectronics, Jiangsu Province High-Tech Key Laboratory for Bio-Medical Research, School of Life Sciences and Technology, Southeast University, Nanjing, China
| | - Peifeng Wan
- School of Life Science, Shandong University, Qingdao, China
| | - Peipei Li
- Department of Otology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Jinpeng Wang
- The Key Laboratory of Animal Resistant Biology of Shandong, College of Life Science, Shandong Normal University, Jinan, China
| | - Siwei Guo
- School of Life Science, Shandong University, Qingdao, China
| | - Yuan Zhang
- Department of Otology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Yachun An
- School of Life Science, Shandong University, Qingdao, China
| | - Chao Ye
- School of Life Science, Shandong University, Qingdao, China
| | - Ziyi Liu
- School of Life Science, Shandong University, Qingdao, China
| | - Jiangang Gao
- School of Life Science, Shandong University, Qingdao, China
| | - Jianming Yang
- Second Hospital of Anhui Medical University, Hefei, China
| | - Jiangang Fan
- Department of Otolaryngology Head and Neck Surgery, Sichuan Academy of Medical Science, Sichuan Provincial People's Hospital, Chengdu, China
| | - Renjie Chai
- State Key Laboratory of Bioelectronics, Jiangsu Province High-Tech Key Laboratory for Bio-Medical Research, School of Life Sciences and Technology, Southeast University, Nanjing, China.,Co-Innovation Center of Neuroregeneration, Nantong University, Nantong, China.,Institute of Stem Cell and Regeneration, Chinese Academy of Sciences, Beijing, China.,Beijing Key Laboratory of Neural Regeneration and Repair, Capital Medical University, Beijing, China
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21
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Duong A, Simard C, Wang YL, Williamson D, Marsot A. Aminoglycosides in the Intensive Care Unit: What Is New in Population PK Modeling? Antibiotics (Basel) 2021; 10:antibiotics10050507. [PMID: 33946905 PMCID: PMC8145041 DOI: 10.3390/antibiotics10050507] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2021] [Revised: 04/24/2021] [Accepted: 04/26/2021] [Indexed: 11/16/2022] Open
Abstract
Background: Although aminoglycosides are often used as treatment for Gram-negative infections, optimal dosing regimens remain unclear, especially in ICU patients. This is due to a large between- and within-subject variability in the aminoglycoside pharmacokinetics in this population. Objective: This review provides comprehensive data on the pharmacokinetics of aminoglycosides in patients hospitalized in the ICU by summarizing all published PopPK models in ICU patients for amikacin, gentamicin, and tobramycin. The objective was to determine the presence of a consensus on the structural model used, significant covariates included, and therapeutic targets considered during dosing regimen simulations. Method: A literature search was conducted in the Medline/PubMed database, using the terms: ‘amikacin’, ‘gentamicin’, ‘tobramycin’, ‘pharmacokinetic(s)’, ‘nonlinear mixed effect’, ‘population’, ‘intensive care’, and ‘critically ill’. Results: Nineteen articles were retained where amikacin, gentamicin, and tobramycin pharmacokinetics were described in six, 11, and five models, respectively. A two-compartment model was used to describe amikacin and tobramycin pharmacokinetics, whereas a one-compartment model majorly described gentamicin pharmacokinetics. The most recurrent significant covariates were renal clearance and bodyweight. Across all aminoglycosides, mean interindividual variability in clearance and volume of distribution were 41.6% and 22.0%, respectively. A common consensus for an optimal dosing regimen for each aminoglycoside was not reached. Conclusions: This review showed models developed for amikacin, from 2015 until now, and for gentamicin and tobramycin from the past decades. Despite the growing challenges of external evaluation, the latter should be more considered during model development. Further research including new covariates, additional simulated dosing regimens, and external validation should be considered to better understand aminoglycoside pharmacokinetics in ICU patients.
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Affiliation(s)
- Alexandre Duong
- Faculté de Pharmacie, Université de Montréal, Montréal, QC H3T 1J4, Canada; (Y.L.W.); (D.W.); (A.M.)
- Laboratoire de Suivi Thérapeutique Pharmacologique et Pharmacocinétique, Faculté de Pharmacie, Université de Montréal, Montréal, QC H3T 1J4, Canada
- Correspondence: ; Tel.: +1-514-343-6111
| | - Chantale Simard
- Faculté de Pharmacie, Université Laval, Québec, QC G1V 0A6, Canada;
- Centre de Recherche, Institut Universitaire de Cardiologie et Pneumologie de Québec, Québec, QC G1V 4G5, Canada
| | - Yi Le Wang
- Faculté de Pharmacie, Université de Montréal, Montréal, QC H3T 1J4, Canada; (Y.L.W.); (D.W.); (A.M.)
- Laboratoire de Suivi Thérapeutique Pharmacologique et Pharmacocinétique, Faculté de Pharmacie, Université de Montréal, Montréal, QC H3T 1J4, Canada
| | - David Williamson
- Faculté de Pharmacie, Université de Montréal, Montréal, QC H3T 1J4, Canada; (Y.L.W.); (D.W.); (A.M.)
- Hôpital Sacré-Cœur de Montréal, Montréal, QC H4J 1C5, Canada
| | - Amélie Marsot
- Faculté de Pharmacie, Université de Montréal, Montréal, QC H3T 1J4, Canada; (Y.L.W.); (D.W.); (A.M.)
- Laboratoire de Suivi Thérapeutique Pharmacologique et Pharmacocinétique, Faculté de Pharmacie, Université de Montréal, Montréal, QC H3T 1J4, Canada
- Centre de Recherche, CHU Sainte Justine, Montréal, QC H3T 1C5, Canada
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22
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Abstract
Mitochondrial dysfunction has been suggested to be a risk factor for sensorineural hearing loss (SNHL) induced by aging, noise, ototoxic drugs, and gene. Reactive oxygen species (ROS) are mainly derived from mitochondria, and oxidative stress induced by ROS contributes to cochlear damage as well as mitochondrial DNA mutations, which may enhance the sensitivity and severity of hearing loss and disrupt ion homeostasis (e.g., Ca2+ homeostasis). The formation and accumulation of ROS further undermine mitochondrial components and ultimately lead to apoptosis and necrosis. SIRT3–5, located in mitochondria, belong to the family of sirtuins, which are highly conserved deacetylases dependent on nicotinamide adenine dinucleotide (NAD+). These deacetylases regulate diverse cellular biochemical activities. Recent studies have revealed that mitochondrial sirtuins, especially SIRT3, modulate ROS levels in hearing loss pathologies. Although the precise functions of SIRT4 and SIRT5 in the cochlea remain unclear, the molecular mechanisms in other tissues indicate a potential protective effect against hearing loss. In this review, we summarize the current knowledge regarding the role of mitochondrial dysfunction in hearing loss, discuss possible functional links between mitochondrial sirtuins and SNHL, and propose a perspective that SIRT3–5 have a positive effect on SNHL.
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23
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Blackout in the powerhouse: clinical phenotypes associated with defects in the assembly of OXPHOS complexes and the mitoribosome. Biochem J 2021; 477:4085-4132. [PMID: 33151299 PMCID: PMC7657662 DOI: 10.1042/bcj20190767] [Citation(s) in RCA: 27] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2020] [Revised: 09/29/2020] [Accepted: 10/05/2020] [Indexed: 12/26/2022]
Abstract
Mitochondria produce the bulk of the energy used by almost all eukaryotic cells through oxidative phosphorylation (OXPHOS) which occurs on the four complexes of the respiratory chain and the F1–F0 ATPase. Mitochondrial diseases are a heterogenous group of conditions affecting OXPHOS, either directly through mutation of genes encoding subunits of OXPHOS complexes, or indirectly through mutations in genes encoding proteins supporting this process. These include proteins that promote assembly of the OXPHOS complexes, the post-translational modification of subunits, insertion of cofactors or indeed subunit synthesis. The latter is important for all 13 of the proteins encoded by human mitochondrial DNA, which are synthesised on mitochondrial ribosomes. Together the five OXPHOS complexes and the mitochondrial ribosome are comprised of more than 160 subunits and many more proteins support their biogenesis. Mutations in both nuclear and mitochondrial genes encoding these proteins have been reported to cause mitochondrial disease, many leading to defective complex assembly with the severity of the assembly defect reflecting the severity of the disease. This review aims to act as an interface between the clinical and basic research underpinning our knowledge of OXPHOS complex and ribosome assembly, and the dysfunction of this process in mitochondrial disease.
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24
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Abstract
Inhibiting eukaryotic protein translation with small molecules is emerging as a powerful therapeutic strategy. The advantage of targeting cellular translational machinery is that it is required for the highly proliferative state of many neoplastic cells, replication of certain viruses, and ultimately the expression of a wide variety of protein targets. Although, this approach has been exploited to develop clinical agents, such as homoharringtonine (HHT, 1), used to treat chronic myeloid leukemia (CML), inhibiting components of the translational machinery is often associated with cytotoxic phenotypes. However, recent studies have demonstrated that certain small molecules can inhibit the translation of specific subsets of proteins, leading to lower cytotoxicity, and opening-up therapeutic opportunities for translation inhibitors to be deployed in indications beyond oncology and infectious disease. This review summarizes efforts to develop inhibitors of the eukaryotic translational machinery as therapeutic agents and highlights emerging opportunities for translation inhibitors in the future.
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Affiliation(s)
- Angela Fan
- Department of Discovery Chemistry, Merck & Co., Inc., South San Francisco, California 94080, United States
| | - Phillip P Sharp
- Department of Discovery Chemistry, Merck & Co., Inc., South San Francisco, California 94080, United States
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25
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Ng RN, Tai AS, Chang BJ, Stick SM, Kicic A. Overcoming Challenges to Make Bacteriophage Therapy Standard Clinical Treatment Practice for Cystic Fibrosis. Front Microbiol 2021; 11:593988. [PMID: 33505366 PMCID: PMC7829477 DOI: 10.3389/fmicb.2020.593988] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2020] [Accepted: 12/08/2020] [Indexed: 12/17/2022] Open
Abstract
Individuals with cystic fibrosis (CF) are given antimicrobials as prophylaxis against bacterial lung infection, which contributes to the growing emergence of multidrug resistant (MDR) pathogens isolated. Pathogens such as Pseudomonas aeruginosa that are commonly isolated from individuals with CF are armed with an arsenal of protective and virulence mechanisms, complicating eradication and treatment strategies. While translation of phage therapy into standard care for CF has been explored, challenges such as the lack of an appropriate animal model demonstrating safety in vivo exist. In this review, we have discussed and provided some insights in the use of primary airway epithelial cells to represent the mucoenvironment of the CF lungs to demonstrate safety and efficacy of phage therapy. The combination of phage therapy and antimicrobials is gaining attention and has the potential to delay the onset of MDR infections. It is evident that efforts to translate phage therapy into standard clinical practice have gained traction in the past 5 years. Ultimately, collaboration, transparency in data publications and standardized policies are needed for clinical translation.
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Affiliation(s)
- Renee N. Ng
- School of Biomedical Sciences, The University of Western Australia, Perth, WA, Australia
- Wal-yan Respiratory Research Center, Telethon Kids Institute, The University of Western Australia, Crawley, WA, Australia
| | - Anna S. Tai
- Department of Respiratory Medicine, Sir Charles Gairdner Hospital, Perth, WA, Australia
- Institute for Respiratory Health, School of Medicine, The University of Western Australia, Perth, WA, Australia
| | - Barbara J. Chang
- The Marshall Center for Infectious Diseases Research and Training, School of Biomedical Sciences, The University of Western Australia, Perth, WA, Australia
| | - Stephen M. Stick
- Wal-yan Respiratory Research Center, Telethon Kids Institute, The University of Western Australia, Crawley, WA, Australia
- Department of Respiratory and Sleep Medicine, Perth Children’s Hospital, Perth, WA, Australia
- Center for Cell Therapy and Regenerative Medicine, School of Medicine and Pharmacology, The University of Western Australia and Harry Perkins Institute of Medical Research, Perth, WA, Australia
| | - Anthony Kicic
- Wal-yan Respiratory Research Center, Telethon Kids Institute, The University of Western Australia, Crawley, WA, Australia
- Department of Respiratory and Sleep Medicine, Perth Children’s Hospital, Perth, WA, Australia
- Center for Cell Therapy and Regenerative Medicine, School of Medicine and Pharmacology, The University of Western Australia and Harry Perkins Institute of Medical Research, Perth, WA, Australia
- Occupation and the Environment, School of Public Health, Curtin University, Perth, WA, Australia
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26
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Gainville A, Rousseau V, Kaguelidou F, Gervoise MB, Michot J, Pizzoglio-Bellaudaz V, Chebane L, Weckel A, Montastruc JL, Durrieu G. Drug-Induced Hearing Loss in Children: An Analysis of Spontaneous Reports in the French PharmacoVigilance Database. Paediatr Drugs 2021; 23:87-93. [PMID: 33200354 DOI: 10.1007/s40272-020-00425-z] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 10/24/2020] [Indexed: 11/29/2022]
Abstract
INTRODUCTION Hearing loss can have a negative impact on communication, with significant vocational, educational, and social consequences. Drugs are one of the causes of hearing loss in children. OBJECTIVES The objective of our study was to describe drug-induced hearing loss in the pediatric population. METHODS Reports of hearing loss from 1985 to December 2019 in the pediatric population (< 18 years) were extracted from the French PharmacoVigilance Database (FPVD). We performed a retrospective and descriptive analysis of adverse drug reaction (ADR) reports. RESULTS A total of 70 ADR reports were identified among the 51,216 reports registered in the FPVD, 37 involving adolescents (12-17 years, 52.9%), 28 children (2-11 years, 40.0%), and 5 infants (28 days-23 months, 7.1%). Overall, 40 reports (57.1%) involved girls. A total of 56 reports (80.0%) were "serious." The most frequent hearing disorders were deafness (n = 31, 44.3%) and hypoacusis (n = 22, 31.4%). Suspected drugs (ATC 5th level) were amikacin (n = 11, 15.7%), cisplatin (n = 11, 15.7%), doxorubicin (n = 4, 5.7%), vincristine (n = 4, 5.7%), clarithromycin (n = 4, 5.7%), ceftriaxone (n = 3, 4.3%), isotretinoin (n = 3, 4.3%), and vancomycin (n = 3, 4.3%). CONCLUSIONS This study shows that about three out of four cases of drug-induced hearing loss in the pediatric population were "serious". It also underlines the under-reporting of these ADRs and the importance of strengthening hearing monitoring in children during and long after drug exposure.
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Affiliation(s)
- Adrien Gainville
- Service de Pharmacologie Médicale et Clinique, Centre Régional de Pharmacovigilance, Pharmacoépidémiologie et Informations sur le Médicament, INSERM U 1027, CIC INSERM 1436, Centre Hospitalier Universitaire et Faculté de Médecine de Toulouse, France, 37 Allées Jules Guesde, 31000, Toulouse, France
| | - Vanessa Rousseau
- Service de Pharmacologie Médicale et Clinique, Centre Régional de Pharmacovigilance, Pharmacoépidémiologie et Informations sur le Médicament, INSERM U 1027, CIC INSERM 1436, Centre Hospitalier Universitaire et Faculté de Médecine de Toulouse, France, 37 Allées Jules Guesde, 31000, Toulouse, France
| | - Florentia Kaguelidou
- Centre d'Investigation Clinique, INSERM CIC1426, Hôpital Robert Debré, 48, boulevard Sérurier, 75019, Paris, France
| | - Marie Boyer Gervoise
- Service de pharmacologie clinique et pharmacovigilance, centre régional de pharmacovigilance Marseille Provence Corse, hôpital Sainte-Marguerite, Hôpitaux de Marseille, 13009, Marseille, France
| | - Joëlle Michot
- Centre Régional de Pharmacovigilance, Saint Antoine Hôpital (APHP), Paris, France
| | - Véronique Pizzoglio-Bellaudaz
- Service Hospitalo-Universitaire de Pharmacotoxicologie, Centre de Pharmacovigilance, Hospices Civils de Lyon, CHU-Lyon, Lyon, France
| | - Leila Chebane
- Service de Pharmacologie Médicale et Clinique, Centre Régional de Pharmacovigilance, Pharmacoépidémiologie et Informations sur le Médicament, INSERM U 1027, CIC INSERM 1436, Centre Hospitalier Universitaire et Faculté de Médecine de Toulouse, France, 37 Allées Jules Guesde, 31000, Toulouse, France
| | - Alexandra Weckel
- Service d'ORL pédiatrique, Centre Hospitalier Universitaire de Toulouse, Toulouse, France
| | - Jean-Louis Montastruc
- Service de Pharmacologie Médicale et Clinique, Centre Régional de Pharmacovigilance, Pharmacoépidémiologie et Informations sur le Médicament, INSERM U 1027, CIC INSERM 1436, Centre Hospitalier Universitaire et Faculté de Médecine de Toulouse, France, 37 Allées Jules Guesde, 31000, Toulouse, France
| | - Geneviève Durrieu
- Service de Pharmacologie Médicale et Clinique, Centre Régional de Pharmacovigilance, Pharmacoépidémiologie et Informations sur le Médicament, INSERM U 1027, CIC INSERM 1436, Centre Hospitalier Universitaire et Faculté de Médecine de Toulouse, France, 37 Allées Jules Guesde, 31000, Toulouse, France.
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Tixier MS, Perez Martinez S, Douin M. Markers of life history traits: variation in morphology, molecular and amino acid sequences within Typhlodromus (Anthoseius) recki Wainstein (Acari: Mesostigmata: Phytoseiidae). Biol J Linn Soc Lond 2020. [DOI: 10.1093/biolinnean/blaa103] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
Abstract
In this study we investigated morphological and molecular variation within the predatory mite Typhlodromus (Anthoseius) recki, and their relationships to ecological features. In total, 42 morphological characters were measured on 87 specimens from seven populations in the south of France and Sicily living on plants of four families. DNA sequences (two mitochondrial markers) and the amino acid sequences of the CytB protein were assessed. A relationship between morphological variation and plant families was observed. The 12S rRNA gene showed differentiation that appeared to be related to feeding habit, in agreement with the findings for two other Phytoseiidae species. CytB mitochondrial DNA showed variation related to geographical location. Four amino acid mutations separated the Sicilian and the French populations. CytB amino acid sequences were analysed for three other Phytoseiidae species, and again diagnostic mutations associated with geographical location were observed, as already shown for Phytoseiulus macropilis. The population differentiation observed for each marker (morphological, DNA fragments) appeared to be related to ecological/biological features, revealing new perspectives for forecasting functional characteristics based on morphotypes and genotypes. However, additional studies are needed to confirm these observations and to explain such functional relationships.
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Affiliation(s)
- Marie-Stéphane Tixier
- CBGP, Institut Agro, INRA, CIRAD, IRD, Univ. Montpellier, Campus International de Baillarguet, Montpellier, France
| | - Sandra Perez Martinez
- CBGP, Institut Agro, INRA, CIRAD, IRD, Univ. Montpellier, Campus International de Baillarguet, Montpellier, France
| | - Martial Douin
- CBGP, Institut Agro, INRA, CIRAD, IRD, Univ. Montpellier, Campus International de Baillarguet, Montpellier, France
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Asally R, Markham R, Manconi F. Mitochondrial DNA haplogroup H association with endometriosis and possible role in inflammation and pain. JOURNAL OF ENDOMETRIOSIS AND PELVIC PAIN DISORDERS 2020. [DOI: 10.1177/2284026520940518] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
Introduction: Endometriosis is an inflammatory disease characterised by the presence of endometrial-like tissue outside the uterus and affects approximately 10%–15% of women in their reproductive years. Pain is one of the predominant symptoms of the disease. Oxidative stress is involved in the pathophysiology of endometriosis and develops when there is an imbalance between the reactive oxygen species and reactive nitrogen species production, and the elimination capacity of antioxidants in the reproductive tract. High levels of reactive oxygen species can induce pain indirectly through oxidative stress-associated inflammation or directly through sensitising the nociceptive neurons that transmit the signals to the cerebral sensory cortex which are perceived as a feeling of pain. Mitochondria are the main source of reactive oxygen species, which generate through oxidative phosphorylation. Given that the mitochondria are involved in reactive oxygen species formation and energy production, which are required for the activation and proliferation of peripheral lymphocytes, it has been suggested that mitochondrial DNA variants are involved in the pathogenesis of endometriosis. This study has provided a better understanding of maternally inherited risk factors which contribute to the pain mechanisms associated with endometriosis. Results: Mitochondrial DNA haplogroup H was found to be significantly higher in women with endometriosis. This study was the first to report the association between the European mitochondrial haplogroup H and the risk of pain associated with endometriosis. Discussion: The results suggest that there are maternally inherited risk factors in women with endometriosis causing high reactive oxygen species production and oxidative stress, which facilitate pain generation in women with endometriosis.
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Affiliation(s)
- Razan Asally
- Discipline of Obstetrics, Gynaecology and Neonatology, The University of Sydney, Camperdown, NSW, Australia
- Saudi Arabian Ministry of Higher Education, Riyadh, Saudi Arabia
| | - Robert Markham
- Discipline of Obstetrics, Gynaecology and Neonatology, The University of Sydney, Camperdown, NSW, Australia
| | - Frank Manconi
- Discipline of Obstetrics, Gynaecology and Neonatology, The University of Sydney, Camperdown, NSW, Australia
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Khela H, Kenna MA. Genetics of pediatric hearing loss: A functional perspective. Laryngoscope Investig Otolaryngol 2020; 5:511-519. [PMID: 32596495 PMCID: PMC7314484 DOI: 10.1002/lio2.390] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2020] [Revised: 04/02/2020] [Accepted: 04/15/2020] [Indexed: 12/14/2022] Open
Abstract
OBJECTIVES This article reviews the current role of genetics in pediatric hearing loss (HL). METHODS A review of the current literature regarding the genetic basis of HL in children was performed. RESULTS To date, 119 nonsyndromic genes have been associated with HL. There are also hundreds of syndromic causes that have HL as part of the clinical phenotype. CONCLUSIONS Identifying HL genes coupled with clinical characteristics ("genotype-phenotype") yields a more accurate diagnosis and prognosis. Although the complexity of the auditory apparatus presents challenges, gene therapy is emerging and may be a viable management option in the future.
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Affiliation(s)
- Harmon Khela
- Summer Scholars Program, Otolaryngology and Communication Enhancement, Boston Children's Hospital, Harvard Medical SchoolBostonMassachusettsUSA
| | - Margaret A. Kenna
- Department of Otolaryngology and Communication EnhancementBoston Children's Hospital, Harvard Medical SchoolBostonMassachusettsUSA
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Abstract
Antimicrobials are a widely used class of medications, but several of them are associated with neurological and psychiatric side effects. The exact incidence of neurotoxicity with anti-infectives is unknown, although it is estimated to be < 1%. Neurotoxicity occurs with all classes of antimicrobials, such as antibiotics, antimycobacterials, antivirals, antifungals and antiretrovirals, with side effects ranging from headaches, anxiety and depression to confusion, delirium, psychosis, mania and seizures, among others. It is important to consider these possible side effects to prevent misdiagnosis or delayed treatment as drug withdrawal can be associated with reversibility in most cases. This article highlights the different neurotoxic effects of a range of antimicrobials, discusses proposed mechanisms of onset and offers general management recommendations. The effects of antibiotics on the gut microbiome and how they may ultimately affect cognition is also briefly examined.
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Affiliation(s)
- Madison K Bangert
- Section of Infectious Diseases, Department of Medicine, UT Health McGovern Medical School, 6431 Fannin St. MSB 2.112, Houston, TX, 77030, USA
| | - Rodrigo Hasbun
- Section of Infectious Diseases, Department of Medicine, UT Health McGovern Medical School, 6431 Fannin St. MSB 2.112, Houston, TX, 77030, USA.
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Fujimoto C, Yamasoba T. Mitochondria-Targeted Antioxidants for Treatment of Hearing Loss: A Systematic Review. Antioxidants (Basel) 2019; 8:E109. [PMID: 31022870 PMCID: PMC6523236 DOI: 10.3390/antiox8040109] [Citation(s) in RCA: 53] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2019] [Revised: 04/22/2019] [Accepted: 04/23/2019] [Indexed: 01/22/2023] Open
Abstract
Mitochondrial dysfunction is associated with the etiologies of sensorineural hearing loss, such as age-related hearing loss, noise- and ototoxic drug-induced hearing loss, as well as hearing loss due to mitochondrial gene mutation. Mitochondria are the main sources of reactive oxygen species (ROS) and ROS-induced oxidative stress is involved in cochlear damage. Moreover, the release of ROS causes further damage to mitochondrial components. Antioxidants are thought to counteract the deleterious effects of ROS and thus, may be effective for the treatment of oxidative stress-related diseases. The administration of mitochondria-targeted antioxidants is one of the drug delivery systems targeted to mitochondria. Mitochondria-targeted antioxidants are expected to help in the prevention and/or treatment of diseases associated with mitochondrial dysfunction. Of the various mitochondria-targeted antioxidants, the protective effects of MitoQ and SkQR1 against ototoxicity have been previously evaluated in animal models and/or mouse auditory cell lines. MitoQ protects against both gentamicin- and cisplatin-induced ototoxicity. SkQR1 also provides auditory protective effects against gentamicin-induced ototoxicity. On the other hand, decreasing effect of MitoQ on gentamicin-induced cell apoptosis in auditory cell lines has been controversial. No clinical studies have been reported for otoprotection using mitochondrial-targeted antioxidants. High-quality clinical trials are required to reveal the therapeutic effect of mitochondria-targeted antioxidants in terms of otoprotection in patients.
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Affiliation(s)
- Chisato Fujimoto
- Department of Otolaryngology and Head and Neck Surgery, Graduate School of Medicine, The University of Tokyo 7-3-1, Hongo, Bunkyo-ku, Tokyo 113-8655, Japan.
- Department of Otolaryngology, Tokyo Teishin Hospital, 2-14-23, Fujimi, Chiyoda-ku, Tokyo 102-8798, Japan.
| | - Tatsuya Yamasoba
- Department of Otolaryngology and Head and Neck Surgery, Graduate School of Medicine, The University of Tokyo 7-3-1, Hongo, Bunkyo-ku, Tokyo 113-8655, Japan.
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Cuyàs E, Verdura S, Folguera-Blasco N, Bastidas-Velez C, Martin ÁG, Alarcón T, Menendez JA. Mitostemness. Cell Cycle 2018; 17:918-926. [PMID: 29886796 DOI: 10.1080/15384101.2018.1467679] [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] [Indexed: 12/21/2022] Open
Abstract
Unraveling the key mechanisms governing the retention versus loss of the cancer stem cell (CSC) state would open new therapeutic avenues to eradicate cancer. Mitochondria are increasingly recognized key drivers in the origin and development of CSC functional traits. We here propose the new term "mitostemness" to designate the mitochondria-dependent signaling functions that, evolutionary rooted in the bacterial origin of mitochondria, regulate the maintenance of CSC self-renewal and resistance to differentiation. Mitostemness traits, namely mitonuclear communication, mitoproteome components, and mitochondrial fission/fusion dynamics, can be therapeutically exploited to target the CSC state. We briefly review the pre-clinical evidence of action of investigational compounds on mitostemness traits and discuss ongoing strategies to accelerate the clinical translation of new mitostemness drugs. The recognition that the bacterial origin of present-day mitochondria can drive decision-making signaling phenomena may open up a new therapeutic dimension against life-threatening CSCs. New therapeutics aimed to target mitochondria not only as biochemical but also as biophysical and morpho-physiological hallmarks of CSC might certainly guide improvements to cancer treatment.
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Affiliation(s)
- Elisabet Cuyàs
- a Program Against Cancer Therapeutic Resistance (ProCURE), Metabolism and Cancer Group , Catalan Institute of Oncology , Girona , Spain.,b Girona Biomedical Research Institute (IDIBGI) , Girona , Spain
| | - Sara Verdura
- a Program Against Cancer Therapeutic Resistance (ProCURE), Metabolism and Cancer Group , Catalan Institute of Oncology , Girona , Spain.,b Girona Biomedical Research Institute (IDIBGI) , Girona , Spain
| | | | | | | | - Tomás Alarcón
- c Centre de Recerca Matemàtica , Barcelona , Spain.,e Barcelona Graduate School of Mathematics (BGSMath) , Barcelona , Spain.,f ICREA , Barcelona , Spain.,g Departament de Matemàtiques , Universitat Autònoma de Barcelona , Barcelona , Spain
| | - Javier A Menendez
- a Program Against Cancer Therapeutic Resistance (ProCURE), Metabolism and Cancer Group , Catalan Institute of Oncology , Girona , Spain.,b Girona Biomedical Research Institute (IDIBGI) , Girona , Spain
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