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Verma SK, Nandi A, Sinha A, Patel P, Mohanty S, Jha E, Jena S, Kumari P, Ghosh A, Jerman I, Chouhan RS, Dutt A, Samal SK, Mishra YK, Varma RS, Panda PK, Kaushik NK, Singh D, Suar M. The posterity of Zebrafish in paradigm of in vivo molecular toxicological profiling. Biomed Pharmacother 2024; 171:116160. [PMID: 38237351 DOI: 10.1016/j.biopha.2024.116160] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2023] [Revised: 01/05/2024] [Accepted: 01/11/2024] [Indexed: 02/08/2024] Open
Abstract
The aggrandised advancement in utility of advanced day-to-day materials and nanomaterials has raised serious concern on their biocompatibility with human and other biotic members. In last few decades, understanding of toxicity of these materials has been given the centre stage of research using many in vitro and in vivo models. Zebrafish (Danio rerio), a freshwater fish and a member of the minnow family has garnered much attention due to its distinct features, which make it an important and frequently used animal model in various fields of embryology and toxicological studies. Given that fertilization and development of zebrafish eggs take place externally, they serve as an excellent model organism for studying early developmental stages. Moreover, zebrafish possess a comparable genetic composition to humans and share almost 70% of their genes with mammals. This particular model organism has become increasingly popular, especially for developmental research. Moreover, it serves as a link between in vitro studies and in vivo analysis in mammals. It is an appealing choice for vertebrate research, when employing high-throughput methods, due to their small size, swift development, and relatively affordable laboratory setup. This small vertebrate has enhanced comprehension of pathobiology and drug toxicity. This review emphasizes on the recent developments in toxicity screening and assays, and the new insights gained about the toxicity of drugs through these assays. Specifically, the cardio, neural, and, hepatic toxicology studies inferred by applications of nanoparticles have been highlighted.
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Affiliation(s)
- Suresh K Verma
- School of Biotechnology, KIIT University, Bhubaneswar, India.
| | - Aditya Nandi
- School of Biotechnology, KIIT University, Bhubaneswar, India
| | - Adrija Sinha
- School of Biotechnology, KIIT University, Bhubaneswar, India
| | - Paritosh Patel
- School of Biotechnology, KIIT University, Bhubaneswar, India; Plasma Bioscience Research Center, Department of Electrical and Biological Physics, Kwangwoon University, 01897, Seoul, South Korea
| | | | - Ealisha Jha
- School of Biotechnology, KIIT University, Bhubaneswar, India
| | - Snehasmita Jena
- School of Biotechnology, KIIT University, Bhubaneswar, India
| | - Puja Kumari
- RECETOX, Faculty of Science, Masaryk University, Kotlarska 2, Brno 61137, Czech Republic
| | - Aishee Ghosh
- School of Biotechnology, KIIT University, Bhubaneswar, India
| | - Ivan Jerman
- National Institute of Chemistry, Hajdrihova 19, 1000 Ljubljana, Slovenia
| | - Raghuraj Singh Chouhan
- Department of Environmental Sciences, Jožef Stefan Institute, Jamova 39, 1000 Ljubljana, Slovenia
| | - Ateet Dutt
- Instituto de Investigaciones en Materiales, UNAM, CDMX, Mexico
| | - Shailesh Kumar Samal
- Unit of Immunology and Chronic Disease, Institute of Environmental Medicine, Karolinska Institutet, 17177 Stockholm, Sweden
| | - Yogendra Kumar Mishra
- Mads Clausen Institute, NanoSYD, University of Southern Denmark, Alsion 2, Sønderborg DK-6400, Denmark
| | - Rajender S Varma
- Institute for Nanomaterials, Advanced Technologies and Innovation (CxI), Technical University of Liberec (TUL), Studentská 1402/2, Liberec 1 461 17, Czech Republic
| | - Pritam Kumar Panda
- Condensed Matter Theory Group, Materials Theory Division, Department of Physics and Astronomy, Uppsala University, Box 516, SE-751 20 Uppsala, Sweden
| | - Nagendra Kumar Kaushik
- Plasma Bioscience Research Center, Department of Electrical and Biological Physics, Kwangwoon University, 01897, Seoul, South Korea.
| | - Deobrat Singh
- Condensed Matter Theory Group, Materials Theory Division, Department of Physics and Astronomy, Uppsala University, Box 516, SE-751 20 Uppsala, Sweden.
| | - Mrutyunjay Suar
- School of Biotechnology, KIIT University, Bhubaneswar, India.
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Jeon H, Song IS, Park JG, Lee H, Han E, Park S, Lee Y, Song CM, Hur W, Lee IG, Choi J. Protective effects of esomeprazole against cisplatin-induced ototoxicity: an in vitro and in vivo study. AQUATIC TOXICOLOGY (AMSTERDAM, NETHERLANDS) 2023; 260:106573. [PMID: 37210931 DOI: 10.1016/j.aquatox.2023.106573] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/20/2023] [Revised: 05/06/2023] [Accepted: 05/11/2023] [Indexed: 05/23/2023]
Abstract
In this study, we aimed to identify novel compounds that could afford protection against cisplatin-induced ototoxicity by employing both cell- and zebrafish (Danio rerio)-based screening platforms. We screened 923 US Food and Drug Administration-approved drugs to identify potential compounds exhibiting protective effects against cisplatin-induced ototoxicity in HEI-OC1 cells (auditory hair cell line). The screening strategy identified esomeprazole and dexlansoprazole as the primary hit compounds. Subsequently, we examined the effects of these compounds on cell viability and apoptosis. Our results revealed that esomeprazole and dexlansoprazole inhibited organic cation transporter 2 (OCT2), thus providing in vitro evidence that these compounds could ameliorate cisplatin-induced ototoxicity by directly inhibiting OCT2-mediated cisplatin transport. In vivo, the protective effects were validated using zebrafish; esomeprazole was found to decrease cisplatin-induced hair cell damage in neuromasts. Furthermore, the esomeprazole-treated group showed a significantly lower number of TUNEL-positive cells than the cisplatin-treated group. Collectively, our findings revealed that esomeprazole exerts a protective effect against cisplatin-induced hair cell damage in both HEI-OC1 cells and a zebrafish model.
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Affiliation(s)
- Hanul Jeon
- Biomedical Research Division, Korea Institute of Science and Technology (KIST), Seoul, Republic of Korea
| | - In Sik Song
- Department of Otorhinolaryngology-Head and Neck Surgery, Korea University College of Medicine, Korea University Ansan Hospital, Ansan, Republic of Korea
| | - Jin-Gyeong Park
- Biomedical Research Division, Korea Institute of Science and Technology (KIST), Seoul, Republic of Korea
| | - Hyejin Lee
- Department of Otorhinolaryngology-Head and Neck Surgery, Korea University College of Medicine, Korea University Ansan Hospital, Ansan, Republic of Korea
| | - Eunjung Han
- Department of Otorhinolaryngology-Head and Neck Surgery, Korea University College of Medicine, Korea University Ansan Hospital, Ansan, Republic of Korea
| | - Saemi Park
- Department of Otorhinolaryngology-Head and Neck Surgery, Korea University College of Medicine, Korea University Ansan Hospital, Ansan, Republic of Korea
| | - Yunkyoung Lee
- Zebrafish Translational Medical Research Center, Korea University, Ansan, Republic of Korea
| | - Chi-Man Song
- Biomedical Research Division, Korea Institute of Science and Technology (KIST), Seoul, Republic of Korea
| | - Wooyoung Hur
- Biomedical Research Division, Korea Institute of Science and Technology (KIST), Seoul, Republic of Korea
| | - In-Gyun Lee
- Biomedical Research Division, Korea Institute of Science and Technology (KIST), Seoul, Republic of Korea.
| | - June Choi
- Department of Otorhinolaryngology-Head and Neck Surgery, Korea University College of Medicine, Korea University Ansan Hospital, Ansan, Republic of Korea; Zebrafish Translational Medical Research Center, Korea University, Ansan, Republic of Korea.
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Zhang R, Sun Y, Zhang Q, Lin J, Zhang Y, Chen X, Liu T, Li Q. Overexpression of miR-124-3p affects zebrafish inner ear development and hearing function via downregulation of EYA1 gene expression. Neurosci Lett 2023; 802:137172. [PMID: 36898654 DOI: 10.1016/j.neulet.2023.137172] [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: 03/01/2023] [Accepted: 03/06/2023] [Indexed: 03/10/2023]
Abstract
The EYA1 gene is essential for normal inner ear development and affects the development and function of the inner ear in a dose-dependent manner. However, the mechanisms regulating EYA1 gene expression are not well understood. Recently, miRNAs have become recognized as important regulators of gene expression. In this study, we identified miR-124-3p through a microRNA (miRNA) target prediction website and found that miR-124-3p and its target site in the EYA1 3' untranslated region (3'UTR) are conserved in most vertebrates. Both in vivo and in vitro, the interaction of miR-124-3p with the EYA1 3'UTR exerts a negative regulatory effect. Microinjection of agomiR-124-3p into zebrafish embryos resulted in a phenotype of reduced auricular area, suggesting inner ear dysplasia. In addition, injection of agomiR-124-3p or antagomiR-124-3p caused abnormal hearing function in zebrafish. In conclusion, our results suggest that miR-124-3p can affect inner ear development and hearing function in zebrafish by regulating EYA1.
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Affiliation(s)
- Ruizhi Zhang
- Translational Medical Center for Development and Disease, Shanghai Key Laboratory of Birth Defect Prevention and Control, NHC Key Laboratory of Neonatal Diseases (Fudan University), Institute of Pediatrics, Children's Hospital of Fudan University, National Children's Medical Center, Shanghai, China
| | - Yanhe Sun
- Translational Medical Center for Development and Disease, Shanghai Key Laboratory of Birth Defect Prevention and Control, NHC Key Laboratory of Neonatal Diseases (Fudan University), Institute of Pediatrics, Children's Hospital of Fudan University, National Children's Medical Center, Shanghai, China
| | - Qi Zhang
- Translational Medical Center for Development and Disease, Shanghai Key Laboratory of Birth Defect Prevention and Control, NHC Key Laboratory of Neonatal Diseases (Fudan University), Institute of Pediatrics, Children's Hospital of Fudan University, National Children's Medical Center, Shanghai, China
| | - Jia Lin
- Translational Medical Center for Development and Disease, Shanghai Key Laboratory of Birth Defect Prevention and Control, NHC Key Laboratory of Neonatal Diseases (Fudan University), Institute of Pediatrics, Children's Hospital of Fudan University, National Children's Medical Center, Shanghai, China
| | - Yinglan Zhang
- Translational Medical Center for Development and Disease, Shanghai Key Laboratory of Birth Defect Prevention and Control, NHC Key Laboratory of Neonatal Diseases (Fudan University), Institute of Pediatrics, Children's Hospital of Fudan University, National Children's Medical Center, Shanghai, China
| | - Xudong Chen
- Translational Medical Center for Development and Disease, Shanghai Key Laboratory of Birth Defect Prevention and Control, NHC Key Laboratory of Neonatal Diseases (Fudan University), Institute of Pediatrics, Children's Hospital of Fudan University, National Children's Medical Center, Shanghai, China
| | - Ting Liu
- Translational Medical Center for Development and Disease, Shanghai Key Laboratory of Birth Defect Prevention and Control, NHC Key Laboratory of Neonatal Diseases (Fudan University), Institute of Pediatrics, Children's Hospital of Fudan University, National Children's Medical Center, Shanghai, China
| | - Qiang Li
- Translational Medical Center for Development and Disease, Shanghai Key Laboratory of Birth Defect Prevention and Control, NHC Key Laboratory of Neonatal Diseases (Fudan University), Institute of Pediatrics, Children's Hospital of Fudan University, National Children's Medical Center, Shanghai, China.
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Luo Z, Guo S, Ho NY, Takamiya M, Strähle U, Yang L. Methylmercury-induced hair cell loss requires hydrogen peroxide production and leukocytes in zebrafish embryos. Toxicol Lett 2021; 356:151-160. [PMID: 34954246 DOI: 10.1016/j.toxlet.2021.12.012] [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: 08/24/2021] [Revised: 12/07/2021] [Accepted: 12/17/2021] [Indexed: 10/19/2022]
Abstract
Hearing impairment and deafness is frequently observed as one of the neurological signs in patients with Minamata disease caused by methylmercury (MeHg) poisoning. Loss of hair cells in humans and animals is a consequence of MeHg poisoning. However, it is still not clear how MeHg causes hearing deficits. We employed the hair cells of the lateral line system of zebrafish embryos as a model to explore this question. We exposed transgenic zebrafish embryos to MeHg (30-360 μg/L) at the different stages, and scored the numbers of hair cells. We find that MeHg-induced reduction of hair cells is in a concentration dependent manner. By employing antisense morpholino against to pu.1, we confirm that loss of hair cells involves the action of leukocytes. Moreover, hair cell loss is attenuated by co-treating MeHg-exposed embryos with pharmacological inhibitors of NADPH oxidases named diphenyleneiodonium (DPI) and VAS2870. In situ gene expression analysis showed that genes encoding the SQSTM1-Keap1-Nrf2 systems involved in combating oxidative stress and immune responses are highly expressed in the lateral line organs of embryos exposed to MeHg. This suggests that induction of hydrogen peroxide (H2O2) is the primary effect of MeHg on the hair cells. Genes induced by MeHg are also involved in regeneration of the hair cells. These features are likely related to the capacity of the zebrafish to regenerate the lost hair cells.
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Affiliation(s)
- Zidie Luo
- State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, 100012, Beijing, China
| | - Shaojuan Guo
- State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, 100012, Beijing, China
| | - Nga Yu Ho
- Institute of Biological and Chemical Systems-Biological Information Processing, Karlsruhe Institute of Technology (KIT), Karlsruhe, Germany
| | - Masanari Takamiya
- Institute of Biological and Chemical Systems-Biological Information Processing, Karlsruhe Institute of Technology (KIT), Karlsruhe, Germany
| | - Uwe Strähle
- Institute of Biological and Chemical Systems-Biological Information Processing, Karlsruhe Institute of Technology (KIT), Karlsruhe, Germany
| | - Lixin Yang
- State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, 100012, Beijing, China.
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Wu CH, Lu CW, Hsu TH, Wu WJ, Wang SE. Neurotoxicity of fipronil affects sensory and motor systems in zebrafish. PESTICIDE BIOCHEMISTRY AND PHYSIOLOGY 2021; 177:104896. [PMID: 34301358 DOI: 10.1016/j.pestbp.2021.104896] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/24/2020] [Revised: 05/17/2021] [Accepted: 06/02/2021] [Indexed: 06/13/2023]
Abstract
Fipronil is a phenylpyrazole insecticide that may selectively inhibit gamma-aminobutyric acid receptors in insects. Although fipronil is the most widely used insecticide in aquatic environments, few studies have evaluated its neurotoxicity for the sensory and motor systems of aquatic vertebrates. We assessed the effects of acute fipronil exposure on the survival rate, number of hair cells of lateral lines, and neurotoxicity for zebrafish (Danio rerio). In addition, heat maps and the speed and distance of the swimming trajectory were compared between zebrafish subjected to the sham and fipronil treatments. Western blotting and immunohistochemistry were conducted separately to compare expressions of oxidative stress, inflammation, apoptosis, and neurotoxicity related proteins in the brain tissue between adult zebrafish with sham and fipronil treatments. Our results indicated that the survival rates and the speed and distance of the swimming trajectory significantly decreased for adult zebrafish exposed to fipronil. The results also suggested that the number of hair cells of lateral lines significantly reduced for zebrafish embryos exposed to fipronil. In histopathology and Western blotting tests, substantial oxidative stress, inflammation, and apoptosis were observed in the brain tissue of adult zebrafish exposed to fipronil. Our results revealed that fipronil toxicity may impair sensory and motor systems in zebrafish because of damage to lateral hair cells and brain tissue through oxidative stress, inflammation, and apoptosis, which in turn result in a significantly reduced survival rate and impaired locomotion. The behavioral responses of zebrafish exposed to fipronil toxicity should be determined for better understanding the reliability of behavioral biomarkers in the risk assessment of environmental toxicology.
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Affiliation(s)
- Chung-Hsin Wu
- School of Life Science, National Taiwan Normal University, Taipei, Taiwan.
| | - Chen-Wen Lu
- School of Life Science, National Taiwan Normal University, Taipei, Taiwan
| | - Tai-Hsuan Hsu
- School of Life Science, National Taiwan Normal University, Taipei, Taiwan
| | - Wen-Jhen Wu
- School of Life Science, National Taiwan Normal University, Taipei, Taiwan
| | - Sheue-Er Wang
- Pathologist, Pathological Department, Saint Paul's Hospital, Taoyuan, Taiwa.
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6
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Chen S, Zhang DL, Ren CL, Zou WQ, Tian XY, Du XH, Tan CX. Novel Pyridyl-Oxazole Carboxamides: Toxicity Assay Determination in Fungi and Zebrafish Embryos. Molecules 2021; 26:molecules26133883. [PMID: 34202103 PMCID: PMC8271392 DOI: 10.3390/molecules26133883] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2021] [Revised: 06/17/2021] [Accepted: 06/21/2021] [Indexed: 12/15/2022] Open
Abstract
Eight novel pyridyl–oxazole carboxamides were evaluated against fungi and displayed good fungicidal activities against Botrytis cinereal and Rhizoctonia solani. Preliminary bioassay results indicated that at 100 mg/L, compounds 6a–6e, 6g and 6h exhibited 100% fungicidal activities against Botrytis cinerea, and the compound 6b to Rhizoctonia solani at 100%. Then, the zebrafish embryo acute toxicity test was performed to assess the toxicity of 6b and 6c. A series of malformations appeared, when the zebrafish embryos were exposed to 6b and 6c, such as delayed yolk sac resorption, significant shortening of body length, pericardial edema, bending spine, lack of melanin, heart hemorrhage, head hemorrhage, delayed swim sac development, yolk malformation and head malformation. In addition, the acute toxicity of 6b to zebrafish embryo is 4.878 mg/L, and 6c is 6.257 mg/L.
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Feng Y, Yu P, Li J, Cao Y, Zhang J. Phosphatidylinositol 4-kinase β is required for the ciliogenesis of zebrafish otic vesicle. J Genet Genomics 2020; 47:627-636. [PMID: 33358778 DOI: 10.1016/j.jgg.2020.07.007] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2020] [Revised: 07/15/2020] [Accepted: 07/16/2020] [Indexed: 11/26/2022]
Abstract
The primary cilium, an important microtubule-based organelle, protrudes from nearly all the vertebrate cells. The motility of cilia is necessary for various developmental and physiological processes. Phosphoinositides (PIs) and its metabolite, PtdIns(4,5)P2, have been revealed to contribute to cilia assembly and disassembly. As an important kinase of the PI pathway and signaling, phosphatidylinositol 4-kinase β (PI4KB) is the one of the most extensively studied phosphatidylinositol 4-kinase isoform. However, its potential roles in organ development remain to be characterized. To investigate the developmental role of Pi4kb, especially its function on zebrafish ciliogenesis, we generated pi4kb deletion mutants using clustered regularly interspaced short palindromic repeats (CRISPR)/CRISPR-associated protein 9 technique. The homozygous pi4kb mutants exhibit an absence of primary cilia in the inner ear, neuromasts, and pronephric ducts accompanied by severe edema in the eyes and other organs. Moreover, smaller otic vesicle, malformed semicircular canals, and the insensitivity on sound stimulation were characteristics of pi4kb mutants. At the protein level, both in vivo and in vitro analyses revealed that synthesis of Pi4p was greatly reduced owing to the loss of Pi4kb. In addition, the expression of the Pi4kb-binding partner of neuronal calcium sensor-1, as well as the phosphorylation of phosphatidylinositol-4-phosphate downstream effecter of Akt, was significantly inhibited in pi4kb mutants. Taken together, our work uncovers a novel role of Pi4kb in zebrafish inner ear development and the functional formation of hearing ability by determining hair cell ciliogenesis.
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Affiliation(s)
- Yufei Feng
- Affiliated Hospital of Guangdong Medical University & Key Laboratory of Zebrafish Model for Development and Disease of Guangdong Medical University, Zhanjiang 524001, China
| | - Ping Yu
- Affiliated Hospital of Guangdong Medical University & Key Laboratory of Zebrafish Model for Development and Disease of Guangdong Medical University, Zhanjiang 524001, China
| | - Jingyu Li
- Clinical and Translational Research Center, Shanghai First Maternity and Infant Hospital, School of Life Sciences and Technology, Tongji University, Shanghai 200092, China
| | - Ying Cao
- Clinical and Translational Research Center, Shanghai First Maternity and Infant Hospital, School of Life Sciences and Technology, Tongji University, Shanghai 200092, China
| | - Jingjing Zhang
- Affiliated Hospital of Guangdong Medical University & Key Laboratory of Zebrafish Model for Development and Disease of Guangdong Medical University, Zhanjiang 524001, China.
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Chang YS, Park SM, Rah YC, Han EJ, Koun SI, Chang J, Choi J. In vivo assessment of the toxicity of electronic cigarettes to zebrafish ( Danio rerio) embryos, following gestational exposure, in terms of mortality, developmental toxicity, and hair cell damage: Toxicity of E-cigs to zebrafish embryos. Hum Exp Toxicol 2020; 40:148-157. [PMID: 32772711 DOI: 10.1177/0960327120947785] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
With the ban of conventional cigarettes from public spaces, electronic cigarette (E-cig) liquids have emerged as a nicotine replacement treatment for smoking cessation. However, consumers possess little knowledge of the ingredients and health effects of E-cig liquids following exposure. This study evaluated hair cell damage and developmental toxicities following gestational exposure to E-cig liquids. Zebrafish embryos were exposed to E-cig liquids at different concentrations (0.1%, 0.2%, and 0.4%). Embryonic developmental toxicity and hair cell damage was evaluated at 6 and 7 d, respectively, after fertilization. The average number of hair cells in the anterior lateral line (ALL) and posterior lateral line (PLL) following E-cig exposure was compared to that of the control. Morphological abnormalities and heart rate were evaluated. E-cig liquids significantly damaged the hair cells in the ALL, compared to the control (control; 52.85 ± 5.29 cells, 0.1% E-cig; 49.43 ± 7.70 cells, 0.2% E-cig; 40.68 ± 12.00 cells, 0.4% E-cig; 32.14 ± 20.75%; n = 29-40; p < 0.01). At high concentrations, E-cig liquids significantly damaged the hair cells in the PLL (control; 36.88 ± 5.43 cells, 0.1% E-cig; 33.06 ± 5.21 cells, 0.2% E-cig; 30.95 ± 8.03 cells, 0.4% E-cig; 23.72 ± 15.53%, n = 29-40; p < 0.01). No morphological abnormalities in body shape, somites, notochord, tail, and pectoral fin were observed; however, abnormalities were observed in the dorsal fin and heart rate at high concentrations. Thus, gestational exposure to E-cigs significantly damaged hair cells in a concentration-dependent manner and induced developmental toxicities to the dorsal fin and heart rate at high concentrations.
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Affiliation(s)
- Y S Chang
- Department of Otorhinolaryngology - Head and Neck Surgery, 34973Korea University College of Medicine, Korea University Ansan Hospital, Ansan, Republic of Korea
| | - S M Park
- Department of Otorhinolaryngology - Head and Neck Surgery, 34973Korea University College of Medicine, Korea University Ansan Hospital, Ansan, Republic of Korea
| | - Y C Rah
- Department of Otorhinolaryngology - Head and Neck Surgery, 34973Korea University College of Medicine, Korea University Ansan Hospital, Ansan, Republic of Korea
| | - E J Han
- Department of Otorhinolaryngology - Head and Neck Surgery, 34973Korea University College of Medicine, Korea University Ansan Hospital, Ansan, Republic of Korea.,Laboratory of Neurodevelopmental Genetics, Graduate School of Medicine, 34973Korea University, Seoul, Republic of Korea
| | - S I Koun
- Biomedical Research Center, 34973Korea University Ansan Hospital, Ansan, Republic of Korea.,34973Korea University Zebrafish Translational Medical Research Center, Ansan, Republic of Korea
| | - J Chang
- Department of Otorhinolaryngology - Head and Neck Surgery, 65357Hallym University College of Medicine, Seoul, Republic of Korea
| | - J Choi
- Department of Otorhinolaryngology - Head and Neck Surgery, 34973Korea University College of Medicine, Korea University Ansan Hospital, Ansan, Republic of Korea.,34973Korea University Zebrafish Translational Medical Research Center, Ansan, Republic of Korea
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9
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Han E, Ho Oh K, Park S, Chan Rah Y, Park HC, Koun S, Choi J. Analysis of behavioral changes in zebrafish (Danio rerio) larvae caused by aminoglycoside-induced damage to the lateral line and muscles. Neurotoxicology 2020; 78:134-142. [PMID: 32169463 DOI: 10.1016/j.neuro.2020.03.005] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2019] [Revised: 02/29/2020] [Accepted: 03/09/2020] [Indexed: 12/13/2022]
Abstract
Zebrafish behavior is influenced by the lateral line hair cells and muscles. Drug-induced behavioral changes can serve as indicators in the evaluation of drug toxicity. The aminoglycoside family of antibiotics comprise a number of agents, including neomycin (NM) and gentamicin (GM). We hypothesized that NM and GM exert different effects on zebrafish larvae through their action on the lateral line and muscle fibers, inducing different swimming behavioral patterns such as locomotor behavior and the startle response. In this study, 125 μM NM and 5, 10, 20 μM GM induced hair cell damage in the anterior and posterior lateral lines of zebrafish larvae. However, unlike GM, 125 μM NM also caused muscle damage. Locomotor behavior was decreased in the 125 μM NM-exposed group compared to the group exposed to GM. Furthermore, 125 μM NM exposure induced significantly different patterns of various indices of startle behavior compared with the GM exposure groups. Additionally, the larvae exhibited different startle responses depending on the concentration of GM. These results suggest that GM may be the drug-of-choice for analyzing behavioral changes in zebrafish caused by damage to the lateral line alone. Our study highlights the importance of confirming muscle damage in behavioral analyses using zebrafish.
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Affiliation(s)
- Eunjung Han
- Department of Otorhinolaryngology - Head and Neck Surgery, Korea University Ansan Hospital, Korea University, College of Medicine, Seoul, Republic of Korea; Laboratory of Neurodevelopmental Genetics, Graduate School of Medicine, Korea University, Seoul, Republic of Korea
| | - Kyoung Ho Oh
- Department of Otorhinolaryngology - Head and Neck Surgery, Korea University Ansan Hospital, Korea University, College of Medicine, Seoul, Republic of Korea; Korea University Zebrafish Translational Medical Research Center, Ansan, Republic of Korea
| | - Saemi Park
- Department of Otorhinolaryngology - Head and Neck Surgery, Korea University Ansan Hospital, Korea University, College of Medicine, Seoul, Republic of Korea
| | - Yoon Chan Rah
- Department of Otorhinolaryngology - Head and Neck Surgery, Korea University Ansan Hospital, Korea University, College of Medicine, Seoul, Republic of Korea
| | - Hae-Chul Park
- Laboratory of Neurodevelopmental Genetics, Graduate School of Medicine, Korea University, Seoul, Republic of Korea; Korea University Zebrafish Translational Medical Research Center, Ansan, Republic of Korea
| | - Soonil Koun
- Biomedical Research Center, Korea University Ansan Hospital, Ansan, Republic of Korea; Korea University Zebrafish Translational Medical Research Center, Ansan, Republic of Korea.
| | - June Choi
- Department of Otorhinolaryngology - Head and Neck Surgery, Korea University Ansan Hospital, Korea University, College of Medicine, Seoul, Republic of Korea; Korea University Zebrafish Translational Medical Research Center, Ansan, Republic of Korea.
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10
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Cassar S, Adatto I, Freeman JL, Gamse JT, Iturria I, Lawrence C, Muriana A, Peterson RT, Van Cruchten S, Zon LI. Use of Zebrafish in Drug Discovery Toxicology. Chem Res Toxicol 2019; 33:95-118. [PMID: 31625720 DOI: 10.1021/acs.chemrestox.9b00335] [Citation(s) in RCA: 275] [Impact Index Per Article: 55.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Unpredicted human safety events in clinical trials for new drugs are costly in terms of human health and money. The drug discovery industry attempts to minimize those events with diligent preclinical safety testing. Current standard practices are good at preventing toxic compounds from being tested in the clinic; however, false negative preclinical toxicity results are still a reality. Continual improvement must be pursued in the preclinical realm. Higher-quality therapies can be brought forward with more information about potential toxicities and associated mechanisms. The zebrafish model is a bridge between in vitro assays and mammalian in vivo studies. This model is powerful in its breadth of application and tractability for research. In the past two decades, our understanding of disease biology and drug toxicity has grown significantly owing to thousands of studies on this tiny vertebrate. This Review summarizes challenges and strengths of the model, discusses the 3Rs value that it can deliver, highlights translatable and untranslatable biology, and brings together reports from recent studies with zebrafish focusing on new drug discovery toxicology.
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Affiliation(s)
- Steven Cassar
- Preclinical Safety , AbbVie , North Chicago , Illinois 60064 , United States
| | - Isaac Adatto
- Stem Cell and Regenerative Biology , Harvard University , Cambridge , Massachusetts 02138 , United States
| | - Jennifer L Freeman
- School of Health Sciences , Purdue University , West Lafayette , Indiana 47907 , United States
| | - Joshua T Gamse
- Drug Safety Evaluation , Bristol-Myers Squibb , New Brunswick , New Jersey 08901 , United States
| | | | - Christian Lawrence
- Aquatic Resources Program , Boston Children's Hospital , Boston , Massachusetts 02115 , United States
| | | | - Randall T Peterson
- Pharmacology and Toxicology, College of Pharmacy , University of Utah , Salt Lake City , Utah 84112 , United States
| | | | - Leonard I Zon
- Stem Cell Program and Division of Hematology/Oncology, Children's Hospital and Dana Farber Cancer Institute, Howard Hughes Medical Institute, Harvard Medical School, Harvard Stem Cell Institute, Stem Cell and Regenerative Biology Department , Harvard University , Boston , Massachusetts 02138 , United States
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11
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Sun Y, Zhan A, Zhou S, Kuang X, Shen H, Liu H, Xu Y. A novel mitochondria-targeting tetrapeptide for subcellular delivery of nanoparticles. CHINESE CHEM LETT 2019. [DOI: 10.1016/j.cclet.2019.05.001] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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12
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Rah YC, Park S, Koun S, Park HC, Choi J. In vivo assay of the ethanol-induced embryonic hair cell loss and the protective role of the retinoic and folic acid in zebrafish larvae (Danio rerio). Alcohol 2019; 75:113-121. [PMID: 30640074 DOI: 10.1016/j.alcohol.2018.07.008] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2017] [Revised: 06/15/2018] [Accepted: 07/19/2018] [Indexed: 12/20/2022]
Abstract
In reference to the auditory manifestation of fetal alcohol syndrome, previous work has preferentially focused on the deviant neural development of the auditory system. Changes in the sensory hair cell, the ultimate sensory organ, were not well understood. In this study, we carried out an in vivo assessment of the embryonic hair cell changes on the lateral line of zebrafish upon exposure to various ethanol concentrations (0.25%, 0.5%, 0.75%, and 1.0%). A significant decrease in the hair cell count was confirmed as the ethanol concentration increased. Long-term observation (up to 240 hours post-fertilization [hpf]) suggested an irreversible hair cell loss with little chance of a simple delayed development. For an underlying biological process, a significant increase of hair cell apoptosis and a significant decrease of cytoplasmic mitochondria were confirmed as the ethanol concentration increased. Co-treatment with retinoic (0.1 nM) or folic (0.1 mM) acid with the same concentrations of ethanol resulted in significant increases in the remaining hair cells, compared to the ethanol-only treatment group, for every ethanol concentration. The retinoic acid provided more effective protection over folic acid, resulting in no significant changes in hair cell counts for every ethanol concentration (except 1.0%), compared with that of the negative control (without chemical treatment). Hair cell counts in every ethanol concentration were significantly lower than those in negative controls without chemical treatment after folic acid co-treatment. In conclusion, gestational ethanol exposure causes developmental sensory hair cell loss. Potential underlying mechanisms include retinoic or folic acid deficiency, and mitochondrial damage with subsequent hair cell apoptosis. Hair cell loss could possibly be prevented by administering either retinoic or folic acid, with retinoic acid supplementation as the preferred treatment.
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13
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Monroe JD, Millay MH, Patty BG, Smith ME. The curcuminoid, EF-24, reduces cisplatin-mediated reactive oxygen species in zebrafish inner ear auditory and vestibular tissues. J Clin Neurosci 2018; 57:152-156. [PMID: 30243600 DOI: 10.1016/j.jocn.2018.09.002] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2018] [Accepted: 09/10/2018] [Indexed: 12/12/2022]
Abstract
Cisplatin is a widely used chemotherapy drug that can damage auditory and vestibular tissue and cause hearing and balance loss through the intracellular release of reactive oxygen species (ROS). Curcumin has anticancer efficacy and can also counteract cisplatin's damaging effect against sensory tissue by scavenging intracellular ROS, but curcumin's applicability is limited due to its low bioavailability. EF-24 is a synthetic curcumin analog that is more bioavailable than curcumin and can target cancer, but its effects against cisplatin-mediated ROS in auditory and vestibular tissue is currently unknown. In this study, we employed a novel zebrafish inner ear tissue culture system to determine if EF-24 counteracted cisplatin-mediated ROS release in two sensory endorgans, the saccule and the utricle. The zebrafish saccule is associated with auditory function and the utricle with vestibular function. Trimmed endorgans were placed in tissue culture media with a fluorescent reactive oxygen species indicator dye, and intracellular ROS release was measured using a spectrophotometer. We found that cisplatin treatment significantly increased ROS compared to controls, but that EF-24 treatment did not alter or even decreased ROS. Importantly, when equimolar cisplatin and EF-24 treatments are combined, ROS did not increase compared to controls. This suggests that EF-24 may be able to prevent intracellular ROS caused by cisplatin treatment in inner ear tissue.
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Affiliation(s)
- Jerry D Monroe
- Department of Biology, Western Kentucky University, 1906 College Heights Boulevard, #11080, Bowling Green, KY 42101-1080, United States
| | - Matthew H Millay
- Department of Biology, Western Kentucky University, 1906 College Heights Boulevard, #11080, Bowling Green, KY 42101-1080, United States
| | - Blaine G Patty
- Department of Biology, Western Kentucky University, 1906 College Heights Boulevard, #11080, Bowling Green, KY 42101-1080, United States
| | - Michael E Smith
- Department of Biology, Western Kentucky University, 1906 College Heights Boulevard, #11080, Bowling Green, KY 42101-1080, United States.
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14
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Kindt KS, Sheets L. Transmission Disrupted: Modeling Auditory Synaptopathy in Zebrafish. Front Cell Dev Biol 2018; 6:114. [PMID: 30258843 PMCID: PMC6143809 DOI: 10.3389/fcell.2018.00114] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2018] [Accepted: 08/23/2018] [Indexed: 01/04/2023] Open
Abstract
Sensorineural hearing loss is the most common form of hearing loss in humans, and results from either dysfunction in hair cells, the sensory receptors of sound, or the neurons that innervate hair cells. A specific type of sensorineural hearing loss, referred to as auditory synaptopathy, occurs when hair cells are able to detect sound but fail to transmit sound stimuli at the hair-cell synapse. Auditory synaptopathy can originate from genetic alterations that specifically disrupt hair-cell synapse function. Additionally, environmental factors such as noise exposure can leave hair cells intact but result in loss of hair-cell synapses, and represent an acquired form of auditory synaptopathy. The zebrafish model has emerged as a valuable system for studies of hair-cell function, and specifically hair-cell synaptopathy. In this review, we describe the experimental tools that have been developed to study hair-cell synapses in zebrafish. We discuss how zebrafish genetics has helped identify and define the roles of hair-cell synaptic proteins crucial for hearing in humans, and highlight how studies in zebrafish have contributed to our understanding of hair-cell synapse formation and function. In addition, we also discuss work that has used noise exposure or pharmacological mimic of noise-induced excitotoxicity in zebrafish to define cellular mechanisms underlying noise-induced hair-cell damage and synapse loss. Lastly, we highlight how future studies in zebrafish could enhance our understanding of the pathological processes underlying synapse loss in both genetic and acquired auditory synaptopathy. This knowledge is critical in order to develop therapies that protect or repair auditory synaptic contacts.
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Affiliation(s)
- Katie S. Kindt
- Section on Sensory Cell Development and Function, NIDCD/National Institutes of Health, Bethesda, MD, United States
| | - Lavinia Sheets
- Department of Otolaryngology, Washington University School of Medicine, St. Louis, MO, United States
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15
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Glueckert R, Johnson Chacko L, Rask-Andersen H, Liu W, Handschuh S, Schrott-Fischer A. Anatomical basis of drug delivery to the inner ear. Hear Res 2018; 368:10-27. [PMID: 30442227 DOI: 10.1016/j.heares.2018.06.017] [Citation(s) in RCA: 49] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/09/2018] [Revised: 06/16/2018] [Accepted: 06/25/2018] [Indexed: 12/19/2022]
Abstract
The isolated anatomical position and blood-labyrinth barrier hampers systemic drug delivery to the mammalian inner ear. Intratympanic placement of drugs and permeation via the round- and oval window are established methods for local pharmaceutical treatment. Mechanisms of drug uptake and pathways for distribution within the inner ear are hard to predict. The complex microanatomy with fluid-filled spaces separated by tight- and leaky barriers compose various compartments that connect via active and passive transport mechanisms. Here we provide a review on the inner ear architecture at light- and electron microscopy level, relevant for drug delivery. Focus is laid on the human inner ear architecture. Some new data add information on the human inner ear fluid spaces generated with high resolution microcomputed tomography at 15 μm resolution. Perilymphatic spaces are connected with the central modiolus by active transport mechanisms of mesothelial cells that provide access to spiral ganglion neurons. Reports on leaky barriers between scala tympani and the so-called cortilymph compartment likely open the best path for hair cell targeting. The complex barrier system of tight junction proteins such as occludins, claudins and tricellulin isolates the endolymphatic space for most drugs. Comparison of relevant differences of barriers, target cells and cell types involved in drug spread between main animal models and humans shall provide some translational aspects for inner ear drug applications.
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Affiliation(s)
- R Glueckert
- Department of Otolaryngology, Medical University of Innsbruck, Innsbruck, Austria; University Clinics Innsbruck, Tirol Kliniken, University Clinic for Ear, Nose and Throat Medicine Innsbruck, Austria.
| | - L Johnson Chacko
- Department of Otolaryngology, Medical University of Innsbruck, Innsbruck, Austria
| | - H Rask-Andersen
- Department of Surgical Sciences, Section of Otolaryngology, Uppsala University Hospital, SE-751 85, Uppsala, Sweden
| | - W Liu
- Department of Surgical Sciences, Section of Otolaryngology, Uppsala University Hospital, SE-751 85, Uppsala, Sweden
| | - S Handschuh
- VetImaging, VetCore Facility for Research, University of Veterinary Medicine, Vienna, Austria
| | - A Schrott-Fischer
- Department of Otolaryngology, Medical University of Innsbruck, Innsbruck, Austria
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16
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Laurà R, Abbate F, Germanà GP, Montalbano G, Germanà A, Levanti M. Fine structure of the canal neuromasts of the lateral line system in the adult zebrafish. Anat Histol Embryol 2018; 47:322-329. [PMID: 29582454 DOI: 10.1111/ahe.12356] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2017] [Accepted: 02/16/2018] [Indexed: 01/08/2023]
Abstract
The mechanosensory lateral line system of fish is responsible for several functions such as balance, hearing, and orientation in water flow and is formed by neuromast receptor organs distributed on head, trunk and tail. Superficial and canal neuromasts can be distinguished for localization and morphological differences. Several information is present regarding the superficial neuromasts of zebrafish and other teleosts especially during larval and juvenile stages, while not as numerous data are so far available about the ultrastructural characteristics of the canal neuromasts in adult zebrafish. Therefore, the aim of this study was to investigate by transmission electron microscopy the ultrastructural aspects of cells present in the canal neuromasts. Besides the typical cellular aspects of the neuromast, different cellular types of hair cells were observed that could be identified as developing hair cells during the physiological turnover. The knowledge of the observed cellular types of the canal neuromasts and their origin could give a contribution to studies carried out on adult zebrafish used as model in neurological and non-neurological damages, such as deafness and vestibular disorders.
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Affiliation(s)
- R Laurà
- Department of Veterinary Sciences, University of Messina, Messina, Italy
| | - F Abbate
- Department of Veterinary Sciences, University of Messina, Messina, Italy
| | - G P Germanà
- Department of Veterinary Sciences, University of Messina, Messina, Italy
| | - G Montalbano
- Department of Veterinary Sciences, University of Messina, Messina, Italy
| | - A Germanà
- Department of Veterinary Sciences, University of Messina, Messina, Italy
| | - M Levanti
- Department of Veterinary Sciences, University of Messina, Messina, Italy
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17
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Zhang Y, Liu M, Liu J, Wang X, Wang C, Ai W, Chen S, Wang H. Combined toxicity of triclosan, 2,4-dichlorophenol and 2,4,6-trichlorophenol to zebrafish (Danio rerio). ENVIRONMENTAL TOXICOLOGY AND PHARMACOLOGY 2018; 57:9-18. [PMID: 29169085 DOI: 10.1016/j.etap.2017.11.006] [Citation(s) in RCA: 46] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/19/2017] [Accepted: 11/14/2017] [Indexed: 05/10/2023]
Abstract
Triclosan (TCS), 2,4,6-trichlorophenol (2,4,6-TCP) and 2,4-dichlorophenol (2,4-DCP) are the most prevalent chlorinated phenolic pollutants in aquatic environments. Our results showed LC50 and EC50 values of 0.51, 1.11, 2.45mg/L, and 0.36, 0.74, 1.53mg/L for TCS, 2,4,6-TCP and 2,4-DCP, respectively, to 120hpf zebrafish. The highest TCSD (the mixture of TCS, 2,4,6-TCP and 2,4-DCP) toxicity was observed at a TCS:2,4,6-TCP:2,4-DCP concentration ratio of 1:2:4. LC50 and EC50 values of TCSD mixtures for 120-hpf zebrafish were 2.28 and 1.16mg/L, respectively. Two toxicity assessment methods (Toxic Unit and Mixture Toxicity Index) indicated that TCSD interactions produced partly additive toxicity. TCSD exposure decreased zebrafish hatching rate and led to a series of malformations. Following alkaline phosphatase staining, a large area of vascular ablation was observed with almost complete disappearance of vascular branches and a smaller coverage range. Prominent reddening of the yolk sac and visceral mass after oil red O staining implied that TCSD exposure severely affected fat metabolism. Following acridine orange staining, cell death occurred in eyes while high TCSD concentrations (0.84mg/L) induced cardiovascular circulation dysfunction. Alcian blue staining increased the α angle between Meckel's cartilages and β angle between two ceratobranchial. Basihyal and palatoquadrate became shorter and developmental abnormality or defects occurred in the fifth ceratobranchial. Overall, these results provide a theoretical basis for systematically evaluating the combined toxicity of the prevalent chlorinated phenolic pollutants in real-world aquatic environments.
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Affiliation(s)
- Yuhuan Zhang
- College of Life Sciences, Wenzhou Medical University, Wenzhou 325035, China
| | - Mi Liu
- College of Life Sciences, Wenzhou Medical University, Wenzhou 325035, China
| | - Jinfeng Liu
- College of Life Sciences, Wenzhou Medical University, Wenzhou 325035, China
| | - Xuedong Wang
- Key Laboratory of Watershed Sciences and Health of Zhejiang Province, Wenzhou Medical University, Wenzhou 325035, China
| | - Caihong Wang
- College of Life Sciences, Wenzhou Medical University, Wenzhou 325035, China
| | - Weiming Ai
- College of Life Sciences, Wenzhou Medical University, Wenzhou 325035, China
| | - Shaobo Chen
- College of Life Sciences, Wenzhou Medical University, Wenzhou 325035, China
| | - Huili Wang
- College of Life Sciences, Wenzhou Medical University, Wenzhou 325035, China.
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18
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Hur DG, Kurabi A, Ryan AF. Screening antioxidants for the protection of cochlear sensory cells. Neural Regen Res 2018; 13:62-64. [PMID: 29451206 PMCID: PMC5840991 DOI: 10.4103/1673-5374.224371] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023] Open
Affiliation(s)
- Dong Gu Hur
- Department of Surgery / Otolaryngology, School of Medicine, University of California, San Diego, La Jolla, CA, USA; Department of Otorhinolaryngology, Gyeongsang National University Changwon Hospital, Changwon, South Korea
| | - Arwa Kurabi
- Department of Surgery / Otolaryngology, School of Medicine, University of California, San Diego, La Jolla, CA, USA
| | - Allen F Ryan
- Department of Surgery / Otolaryngology, School of Medicine, University of California, San Diego, La Jolla; Research Service, Veterans Administration Medical Center, San Diego, CA, USA
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19
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Kenyon EJ, Kirkwood NK, Kitcher SR, O'Reilly M, Derudas M, Cantillon DM, Goodyear RJ, Secker A, Baxendale S, Bull JC, Waddell SJ, Whitfield TT, Ward SE, Kros CJ, Richardson GP. Identification of ion-channel modulators that protect against aminoglycoside-induced hair cell death. JCI Insight 2017; 2:96773. [PMID: 29263311 DOI: 10.1172/jci.insight.96773] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2017] [Accepted: 11/15/2017] [Indexed: 12/22/2022] Open
Abstract
Aminoglycoside antibiotics are used to treat life-threatening bacterial infections but can cause deafness due to hair cell death in the inner ear. Compounds have been described that protect zebrafish lateral line hair cells from aminoglycosides, but few are effective in the cochlea. As the aminoglycosides interact with several ion channels, including the mechanoelectrical transducer (MET) channels by which they can enter hair cells, we screened 160 ion-channel modulators, seeking compounds that protect cochlear outer hair cells (OHCs) from aminoglycoside-induced death in vitro. Using zebrafish, 72 compounds were identified that either reduced loading of the MET-channel blocker FM 1-43FX, decreased Texas red-conjugated neomycin labeling, or reduced neomycin-induced hair cell death. After testing these 72 compounds, and 6 structurally similar compounds that failed in zebrafish, 13 were found that protected against gentamicin-induced death of OHCs in mouse cochlear cultures, 6 of which are permeant blockers of the hair cell MET channel. None of these compounds abrogated aminoglycoside antibacterial efficacy. By selecting those without adverse effects at high concentrations, 5 emerged as leads for developing pharmaceutical otoprotectants to alleviate an increasing clinical problem.
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Affiliation(s)
| | | | | | | | - Marco Derudas
- Sussex Drug Discovery Centre, School of Life Sciences, and
| | - Daire M Cantillon
- Wellcome Trust Centre for Global Health Research, Brighton and Sussex Medical School, University of Sussex, Brighton, United Kingdom
| | | | | | - Sarah Baxendale
- Bateson Centre and Department of Biomedical Science, University of Sheffield, Sheffield, United Kingdom
| | - James C Bull
- Department of Biosciences, College of Science, Swansea University, Swansea, United Kingdom
| | - Simon J Waddell
- Wellcome Trust Centre for Global Health Research, Brighton and Sussex Medical School, University of Sussex, Brighton, United Kingdom
| | - Tanya T Whitfield
- Bateson Centre and Department of Biomedical Science, University of Sheffield, Sheffield, United Kingdom
| | - Simon E Ward
- Sussex Drug Discovery Centre, School of Life Sciences, and.,Medicines Discovery Institute, Cardiff University, Cardiff, United Kingdom
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20
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Matsui H, Matsui N. Cerebrospinal fluid injection into adult zebrafish for disease research. J Neural Transm (Vienna) 2017; 124:1627-1633. [DOI: 10.1007/s00702-017-1787-7] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2017] [Accepted: 08/28/2017] [Indexed: 10/18/2022]
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21
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Cooper CD. Insights from zebrafish on human pigment cell disease and treatment. Dev Dyn 2017; 246:889-896. [DOI: 10.1002/dvdy.24550] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2017] [Revised: 05/22/2017] [Accepted: 06/29/2017] [Indexed: 12/24/2022] Open
Affiliation(s)
- Cynthia D. Cooper
- School of Molecular Biosciences; Washington State University Vancouver; Vancouver Washington
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22
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Matsui H, Takahashi R. Parkinson's disease pathogenesis from the viewpoint of small fish models. J Neural Transm (Vienna) 2017; 125:25-33. [PMID: 28770388 DOI: 10.1007/s00702-017-1772-1] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2017] [Accepted: 07/26/2017] [Indexed: 02/06/2023]
Abstract
Parkinson's disease is a neurodegenerative disorder that involves movement discloses, degeneration of dopaminergic neurons, and presence of cytoplasmic inclusion bodies. Various animal models have been developed and small fish including zebrafish and medaka fish have recently been employed as a new model for Parkinson disease. In this review, we summarize fish models of Parkinson's disease mainly using our own findings and explain two major hypotheses of PD: lysosome dysfunction theory and mitochondrial dysfunction theory. Finally, we discuss the potential for future application of small fish model.
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Affiliation(s)
- Hideaki Matsui
- Department of Neuroscience of Disease, Center for Transdisciplinary Research, Niigata University, Niigata, Japan.
- Brain Research Institute, Niigata University, Niigata, Japan.
| | - Ryosuke Takahashi
- Department of Neurology, Kyoto University Graduate School of Medicine, Kyoto, Japan
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23
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Behavioral methods for the functional assessment of hair cells in zebrafish. Front Med 2017; 11:178-190. [PMID: 28349300 DOI: 10.1007/s11684-017-0507-x] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2016] [Accepted: 11/24/2016] [Indexed: 10/19/2022]
Abstract
Zebrafish is an emerging animal model for studies on auditory system. This model presents high comparability with humans, good accessibility to the hearing organ, and high throughput capacity. To better utilize this animal model, methodologies need to be used to quantify the hearing function of the zebrafish. Zebrafish displays a series of innate and robust behavior related to its auditory function. Here, we reviewed the advantage of using zebrafish in auditory research and then introduced three behavioral tests, as follows: the startle response, the vestibular-ocular reflex, and rheotaxis. These tests are discussed in terms of their physiological characteristics, up-to-date technical development, and apparatus description. Test limitation and areas to improve are also introduced. Finally, we revealed the feasibility of these applications in zebrafish behavioral assessment and their potential in the high-throughput screening on hearing-related genes and drugs.
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24
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Tetrabromobisphenol-A induces apoptotic death of auditory cells and hearing loss. Biochem Biophys Res Commun 2016; 478:1667-73. [DOI: 10.1016/j.bbrc.2016.09.001] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2016] [Accepted: 09/01/2016] [Indexed: 01/22/2023]
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25
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Smith ME, Monroe JD. Causes and Consequences of Sensory Hair Cell Damage and Recovery in Fishes. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2016; 877:393-417. [PMID: 26515323 DOI: 10.1007/978-3-319-21059-9_17] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/11/2023]
Abstract
Sensory hair cells are the mechanotransductive receptors that detect gravity, sound, and vibration in all vertebrates. Damage to these sensitive receptors often results in deficits in vestibular function and hearing. There are currently two main reasons for studying the process of hair cell loss in fishes. First, fishes, like other non-mammalian vertebrates, have the ability to regenerate hair cells that have been damaged or lost via exposure to ototoxic chemicals or acoustic overstimulation. Thus, they are used as a biomedical model to understand the process of hair cell death and regeneration and find therapeutics that treat or prevent human hearing loss. Secondly, scientists and governmental natural resource managers are concerned about the potential effects of intense anthropogenic sounds on aquatic organisms, including fishes. Dr. Arthur N. Popper and his students, postdocs and research associates have performed pioneering experiments in both of these lines of fish hearing research. This review will discuss the current knowledge regarding the causes and consequences of both lateral line and inner ear hair cell damage in teleost fishes.
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Affiliation(s)
- Michael E Smith
- Department of Biology, Western Kentucky University, Bowling Green, KY, 42101, USA.
| | - J David Monroe
- Department of Biology, Western Kentucky University, Bowling Green, KY, 42101, USA.
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26
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Chang J, Choi J, Rah YC, Yoo MH, Oh KH, Im GJ, Lee SH, Kwon SY, Park HC, Chae SW, Jung HH. Sodium Selenite Acts as an Otoprotectant against Neomycin-Induced Hair Cell Damage in a Zebrafish Model. PLoS One 2016; 11:e0151557. [PMID: 26974429 PMCID: PMC4790947 DOI: 10.1371/journal.pone.0151557] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2015] [Accepted: 03/01/2016] [Indexed: 01/13/2023] Open
Abstract
Sodium selenite is a trace element essential for many physiological functions in the body. It is involved in various biological processes; it acts as a cofactor for antioxidant enzymes that protect against free radicals and is reported to limit metal-mediated oxidative DNA damage. In the present study, we investigated the effect of sodium selenite on neomycin ototoxicity in wild-type and transgenic zebrafish (Brn3C: EGFP). Five or six days post-fertilization, zebrafish larvae were co-exposed to 125 μM neomycin and various concentrations (10 μM, 100 μM, 250 μM, and 500 μM) of sodium selenite for 1 h. Hair cells within neuromasts of the supraorbital (SO1 and SO2), otic (O1), and occipital (OC1) lateral lines were analyzed by fluorescence microscopy (n = 10 fish per treatment). Hair cell survival was estimated as the ratio of the hair cell numbers in each group compared to those of the control group that were not exposed to neomycin. Apoptosis and hair cell damage of neuromasts were evaluated using the terminal deoxynucleotidyl transferase (TdT)-mediated dUTP-biotin nick end labeling (TUNEL) assay and 2-[4-(dimethylamino) styryl]-N-ethylpyridinium iodide (DASPEI) assay, respectively. Ultrastructural changes were evaluated using scanning electron microscopy and transmission electron microscopy. Neuromast hair cells were preserved in zebrafish exposed to 125 μM neomycin and 500 μM sodium selenite for 1 h. Sodium selenite protected against neomycin-induced hair cell loss of neuromasts, reduced apoptosis, and prevented zebrafish ultrastructural changes. We propose that sodium selenite protects against neomycin-induced hair cell damage by inhibiting apoptosis, decreasing the disarray of stereocilia, and preventing ultrastructural changes in the neuromast hair cells of the zebrafish.
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Affiliation(s)
- Jiwon Chang
- Department of Otorhinolaryngology-Head and Neck Surgery, Hallym University College of Medicine, Seoul, Korea
| | - June Choi
- Department of Otorhinolaryngology-Head and Neck Surgery, Korea University College of Medicine, Seoul, Korea
- * E-mail:
| | - Yoon Chan Rah
- Department of Otorhinolaryngology-Head and Neck Surgery, Korea University College of Medicine, Seoul, Korea
| | - Myung Hoon Yoo
- Department of Otorhinolaryngology-Head and Neck Surgery, Korea University College of Medicine, Seoul, Korea
| | - Kyoung Ho Oh
- Department of Otorhinolaryngology-Head and Neck Surgery, Korea University College of Medicine, Seoul, Korea
| | - Gi Jung Im
- Department of Otorhinolaryngology-Head and Neck Surgery, Korea University College of Medicine, Seoul, Korea
| | - Seung Hoon Lee
- Department of Otorhinolaryngology-Head and Neck Surgery, Korea University College of Medicine, Seoul, Korea
| | - Soon Young Kwon
- Department of Otorhinolaryngology-Head and Neck Surgery, Korea University College of Medicine, Seoul, Korea
| | - Hae-Chul Park
- Laboratory of Neurodevelopmental Genetics, Graduate School of Medicine, Korea University, Seoul, Korea
| | - Sung Won Chae
- Department of Otorhinolaryngology-Head and Neck Surgery, Korea University College of Medicine, Seoul, Korea
| | - Hak Hyun Jung
- Department of Otorhinolaryngology-Head and Neck Surgery, Korea University College of Medicine, Seoul, Korea
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27
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Teitz T, Goktug AN, Chen T, Zuo J. Development of Cell-Based High-Throughput Chemical Screens for Protection Against Cisplatin-Induced Ototoxicity. Methods Mol Biol 2016; 1427:419-30. [PMID: 27259939 DOI: 10.1007/978-1-4939-3615-1_22] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Various compounds have been tested in recent years for protection against cisplatin-induced hearing loss, but no compound has yet been FDA approved for clinical use in patients. Towards this goal, we developed an unbiased, high-throughput, mammalian cochlear cell-based chemical screen that allowed quantification of the protection ability of bioactive compounds and ranked them for future testing ex vivo in cochlear explant cultures and in vivo in animal models. In our primary screens, protection in the HEI-OC1 organ of Corti immortalized cell line was measured by the ability of each compound to inhibit caspase-3/7 activity triggered by cisplatin treatment (50 μM cisplatin for 22 h). A total of 4385 unique bioactive compounds were tested in a single dose of 8 μM and promising compounds were validated by dose response curves covering ten, 1:3 serial diluted concentrations. Primary hits were defined as having more than 60 % inhibition of the caspase-3/7 activity. Toxicity of the top compounds was measured by a CellTiter-Glo (CTG) assay that measured the viability of the cells in the presence of compound alone in similar dose responsive analysis. A combination of the caspase-3/7 inhibition activity assay (as measured by IC50) and the CTG viability assay (as determined by LD50) identified the top protective compounds in the HEI-OC1 cells. In the future, the top hits in our screens will be tested for their protective ability ex vivo in mouse cochlear explants and in vivo in animal models. Our mammalian cochlear cell-based, high-throughput chemical screening assays described here can be further modified and represent an initial successful step towards therapeutic intervention of hearing disorders, an unmet medical need of our society.
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Affiliation(s)
- Tal Teitz
- Department of Developmental Neurobiology, St. Jude Children's Research Hospital, 262 Danny Thomas Place, Memphis, TN, 38105, USA
| | - Asli N Goktug
- Department of Chemical Biology and Therapeutics, St. Jude Children's Research Hospital, 262 Danny Thomas Place, Memphis, TN, 38105, USA
| | - Taosheng Chen
- Department of Chemical Biology and Therapeutics, St. Jude Children's Research Hospital, 262 Danny Thomas Place, Memphis, TN, 38105, USA
| | - Jian Zuo
- Department of Developmental Neurobiology, St. Jude Children's Research Hospital, 262 Danny Thomas Place, Memphis, TN, 38105, USA.
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Rah YC, Choi J, Yoo MH, Yum G, Park S, Oh KH, Lee SH, Kwon SY, Cho SH, Kim S, Park HC. Ecabet sodium alleviates neomycin-induced hair cell damage. Free Radic Biol Med 2015; 89:1176-83. [PMID: 26561773 DOI: 10.1016/j.freeradbiomed.2015.11.007] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/16/2015] [Revised: 10/13/2015] [Accepted: 11/06/2015] [Indexed: 02/04/2023]
Abstract
Ecabet sodium (ES) is currently applied to some clinical gastrointestinal disease primarily by the inhibition of the ROS production. In this study, the protective role of ES was evaluated against the neomycin-induced hair cell loss using zebrafish experimental animal model. Zebrafish larvae (5-7 dpf), were treated with each of the following concentrations of ES: 5, 10, 20, 40, and 80 μg/mL for 1 h, followed by 125 μM neomycin for 1h. The positive control group was established by 125 μM neomycin-only treatment (1h) and the negative control group with no additional chemicals was also established. Hair cells inside four neuromasts ( SO1, SO2, O1, OC1) were assessed using fluorescence microscopy (n = 10). Hair cell survival was calculated as the mean number of viable hair cells for each group. Apoptosis and mitochondrial damage were investigated using special staining (TUNEL and DASPEI assay, respectively), and compared among groups. Ultrastructural changes were evaluated using scanning electron microscopy. Pre-treatment group with ES increased the mean number of viable hair cells as a dose-dependent manner achieving almost same number of viable hair cells with 40 μM/ml ES treatment (12.98 ± 2.59 cells) comparing to that of the negative control group (14.15 ± 1.39 cells, p = 0.72) and significantly more number of viable hair cells than that of the positive control group (7.45 ± 0.91 cells, p < 0.01). The production of reactive oxygen species significantly increased by 183% with 125 μM neomycin treatment than the negative control group and significantly decreased down to 105% with the pre-treatment with 40 μM/ml ES (n = 40, p = 0.04). A significantly less number of TUNEL-positive cells (reflecting apoptosis, p < 0.01) and a significantly increased DASPEI reactivity (reflecting viable mitochondria, p < 0.01) were observed in 40 μM/ml ES pre-treatment group. Our data suggest that ES could protect against neomycin-induced hair cell loss possibly by reducing apoptosis, mitochondrial damages, and the ROS generation.
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Affiliation(s)
- Yoon Chan Rah
- Department of Otorhinolaryngology-Head and Neck Surgery, Korea University Ansan Hospital, Korea University, College of Medicine, Seoul, Republic of Korea
| | - June Choi
- Department of Otorhinolaryngology-Head and Neck Surgery, Korea University Ansan Hospital, Korea University, College of Medicine, Seoul, Republic of Korea.
| | - Myung Hoon Yoo
- Department of Otorhinolaryngology-Head and Neck Surgery, Korea University Ansan Hospital, Korea University, College of Medicine, Seoul, Republic of Korea
| | - Gunhwee Yum
- Department of Otorhinolaryngology-Head and Neck Surgery, Korea University Ansan Hospital, Korea University, College of Medicine, Seoul, Republic of Korea
| | - Saemi Park
- Department of Otorhinolaryngology-Head and Neck Surgery, Korea University Ansan Hospital, Korea University, College of Medicine, Seoul, Republic of Korea
| | - Kyoung Ho Oh
- Department of Otorhinolaryngology-Head and Neck Surgery, Korea University Ansan Hospital, Korea University, College of Medicine, Seoul, Republic of Korea
| | - Seung Hoon Lee
- Department of Otorhinolaryngology-Head and Neck Surgery, Korea University Ansan Hospital, Korea University, College of Medicine, Seoul, Republic of Korea
| | - Soon Young Kwon
- Department of Otorhinolaryngology-Head and Neck Surgery, Korea University Ansan Hospital, Korea University, College of Medicine, Seoul, Republic of Korea
| | | | - Suhyun Kim
- Laboratory of Neurodevelopmental Genetics, Graduate School of Medicine, Korea University, Seoul, Republic of Korea
| | - Hae-Chul Park
- Laboratory of Neurodevelopmental Genetics, Graduate School of Medicine, Korea University, Seoul, Republic of Korea
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Tang J, Qian Y, Li H, Kopecky BJ, Ding D, Ou HC, DeCook R, Chen X, Sun Z, Kobel M, Bao J. Canertinib induces ototoxicity in three preclinical models. Hear Res 2015; 328:59-66. [PMID: 26163095 DOI: 10.1016/j.heares.2015.07.002] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/04/2015] [Revised: 06/23/2015] [Accepted: 07/03/2015] [Indexed: 12/16/2022]
Abstract
Neuregulin-1 (NRG1) ligand and its epidermal growth factor receptor (EGFR)/ERBB family regulate normal cellular proliferation and differentiation in many tissues including the cochlea. Aberrant NRG1 and ERBB signaling cause significant hearing impairment in mice. Dysregulation of the same signaling pathway in humans is involved in certain types of cancers such as breast cancer or non-small cell lung cancer (NSCLC). A new irreversible pan-ERBB inhibitor, canertinib, has been tested in clinical trials for the treatment of refractory NSCLC. Its possible ototoxicity was unknown. In this study, a significant dose-dependent canertinib ototoxicity was observed in a zebrafish model. Canertinib ototoxicity was further confirmed in two mouse models with different genetic backgrounds. The data strongly suggested an evolutionally preserved ERBB molecular mechanism underlying canertinib ototoxicity. Thus, these results imply that clinical monitoring of hearing loss should be considered for clinical testing of canertinib or other pan-ERBB inhibitors.
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Affiliation(s)
- Jian Tang
- Department of Otolaryngology, Washington University School of Medicine, St. Louis, MO 63110, USA; Department of Thoracic Surgery, Renji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200127, China
| | - Yi Qian
- Department of Cardio-Thoracic Surgery, The Third Affiliated Hospital of Nantong University, Wuxi 214041, China
| | - Hui Li
- Department of Otolaryngology, Washington University School of Medicine, St. Louis, MO 63110, USA; Department of Pharmaceutical Sciences, Northeast Ohio Medical University, Rootstown, OH 44272, USA
| | - Benjamin J Kopecky
- Department of Otolaryngology, Washington University School of Medicine, St. Louis, MO 63110, USA
| | - Dalian Ding
- Center for Hearing and Deafness, State University of New York at Buffalo, 137 Cary Hall, 3435 Main Street, Buffalo, NY 14214, USA
| | - Henry C Ou
- Department of Pediatrics, Seattle Children's Hospital, Seattle, WA, USA; Department of Otolaryngology, University of Washington, Seattle, WA, USA
| | - Rhonda DeCook
- Department of Statistics and Actuarial Science, University of Iowa, Iowa City, IA 52242, USA
| | - Xiaojie Chen
- Gateway Biotechnology Inc., St. Louis, MO 63108, USA
| | - Zhenyu Sun
- Department of Cardio-Thoracic Surgery, The Third Affiliated Hospital of Nantong University, Wuxi 214041, China
| | - Megan Kobel
- Department of Anatomy and Neurobiology, Northeast Ohio Medical University, Rootstown, OH 44272, USA
| | - Jianxin Bao
- Department of Otolaryngology, Washington University School of Medicine, St. Louis, MO 63110, USA; Department of Anatomy and Neurobiology, Northeast Ohio Medical University, Rootstown, OH 44272, USA.
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Monroe JD, Rajadinakaran G, Smith ME. Sensory hair cell death and regeneration in fishes. Front Cell Neurosci 2015; 9:131. [PMID: 25954154 PMCID: PMC4404912 DOI: 10.3389/fncel.2015.00131] [Citation(s) in RCA: 54] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2015] [Accepted: 03/21/2015] [Indexed: 01/31/2023] Open
Abstract
Sensory hair cells are specialized mechanotransductive receptors required for hearing and vestibular function. Loss of hair cells in humans and other mammals is permanent and causes reduced hearing and balance. In the early 1980’s, it was shown that hair cells continue to be added to the inner ear sensory epithelia in cartilaginous and bony fishes. Soon thereafter, hair cell regeneration was documented in the chick cochlea following acoustic trauma. Since then, research using chick and other avian models has led to great insights into hair cell death and regeneration. However, with the rise of the zebrafish as a model organism for studying disease and developmental processes, there has been an increased interest in studying sensory hair cell death and regeneration in its lateral line and inner ears. Advances derived from studies in zebrafish and other fish species include understanding the effect of ototoxins on hair cells and finding otoprotectants to mitigate ototoxin damage, the role of cellular proliferation vs. direct transdifferentiation during hair cell regeneration, and elucidating cellular pathways involved in the regeneration process. This review will summarize research on hair cell death and regeneration using fish models, indicate the potential strengths and weaknesses of these models, and discuss several emerging areas of future studies.
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Affiliation(s)
- Jerry D Monroe
- Department of Biology, Western Kentucky University Bowling Green, KY, USA
| | - Gopinath Rajadinakaran
- Department of Genetics and Genome Sciences, University of Connecticut Health Center Farmington, CT, USA
| | - Michael E Smith
- Department of Biology, Western Kentucky University Bowling Green, KY, USA
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Nishimura Y, Murakami S, Ashikawa Y, Sasagawa S, Umemoto N, Shimada Y, Tanaka T. Zebrafish as a systems toxicology model for developmental neurotoxicity testing. Congenit Anom (Kyoto) 2015; 55:1-16. [PMID: 25109898 DOI: 10.1111/cga.12079] [Citation(s) in RCA: 123] [Impact Index Per Article: 13.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/04/2014] [Accepted: 07/29/2014] [Indexed: 12/18/2022]
Abstract
The developing brain is extremely sensitive to many chemicals. Exposure to neurotoxicants during development has been implicated in various neuropsychiatric and neurological disorders, including autism spectrum disorder, attention deficit hyperactive disorder, schizophrenia, Parkinson's disease, and Alzheimer's disease. Although rodents have been widely used for developmental neurotoxicity testing, experiments using large numbers of rodents are time-consuming, expensive, and raise ethical concerns. Using alternative non-mammalian animal models may relieve some of these pressures by allowing testing of large numbers of subjects while reducing expenses and minimizing the use of mammalian subjects. In this review, we discuss some of the advantages of using zebrafish in developmental neurotoxicity testing, focusing on central nervous system development, neurobehavior, toxicokinetics, and toxicodynamics in this species. We also describe some important examples of developmental neurotoxicity testing using zebrafish combined with gene expression profiling, neuroimaging, or neurobehavioral assessment. Zebrafish may be a systems toxicology model that has the potential to reveal the pathways of developmental neurotoxicity and to provide a sound basis for human risk assessments.
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Affiliation(s)
- Yuhei Nishimura
- Department of Molecular and Cellular Pharmacology, Pharmacogenomics and Pharmacoinformatics, Mie University Graduate School of Medicine, Tsu, Japan; Mie University Medical Zebrafish Research Center, Tsu, Japan; Depertment of Systems Pharmacology, Mie University Graduate School of Medicine, Tsu, Japan; Department of Omics Medicine, Mie University Industrial Technology Innovation Institute, Tsu, Japan; Department of Bioinformatics, Mie University Life Science Research Center, Tsu, Japan
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Lee SK, Oh KH, Chung AY, Park HC, Lee SH, Kwon SY, Choi J. Protective role of quercetin against cisplatin-induced hair cell damage in zebrafish embryos. Hum Exp Toxicol 2015; 34:1043-52. [PMID: 25591968 DOI: 10.1177/0960327114567766] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
BACKGROUND AND OBJECTIVES The aim of this study was to evaluate the protective effects of quercetin on cisplatin-induced hair cell damage in transgenic zebrafish embryos. MATERIALS AND METHODS Five days postfertilization zebrafish embryos were exposed to 1 mM cisplatin and quercetin at 10, 50, 100, or 200 μM for 4 h. Hair cells within neuromasts of the supraorbital, otic, and occipital lateral lines were analyzed by fluorescent microscopy (n = 10). Survival of hair cells was calculated as the average number of hair cells in the control group that were not exposed to cisplatin. Ultrastructural changes were evaluated using scanning electron microscopy. RESULTS Hair cell damage in neuromasts was decreased by co-treatment of quercetin and cisplatin (quercetin 100 μM: 8.6 ± 1.1 cells; 1 mM cisplatin only: 5.0 ± 0.5 cells; n = 10, p < 0.05); apoptosis of hair cells examined by special stain was also decreased by quercetin. The ultrastructure of hair cells within neuromasts was preserved in zebrafish by the combination of quercetin (100 μM) and cisplatin (1 mM). CONCLUSION In conclusion, quercetin showed protective effects against cisplatin-induced toxicity in a zebrafish model. The results of this study suggest the possibility of a protective role of quercetin against cisplatin-induced apoptotic cell death in zebrafish.
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Affiliation(s)
- S K Lee
- Department of Otorhinolaryngology-Head and Neck Surgery, Korea University Ansan Hospital, Korea University College of Medicine, Ansan, Republic of Korea
| | - K H Oh
- Department of Otorhinolaryngology-Head and Neck Surgery, Korea University Ansan Hospital, Korea University College of Medicine, Ansan, Republic of Korea
| | - A Y Chung
- Laboratory of Neurodevelopmental Genetics, Graduate School of Medicine, Korea University, Ansan, Republic of Korea
| | - H C Park
- Laboratory of Neurodevelopmental Genetics, Graduate School of Medicine, Korea University, Ansan, Republic of Korea
| | - S H Lee
- Department of Otorhinolaryngology-Head and Neck Surgery, Korea University Ansan Hospital, Korea University College of Medicine, Ansan, Republic of Korea
| | - S Y Kwon
- Department of Otorhinolaryngology-Head and Neck Surgery, Korea University Ansan Hospital, Korea University College of Medicine, Ansan, Republic of Korea
| | - J Choi
- Department of Otorhinolaryngology-Head and Neck Surgery, Korea University Ansan Hospital, Korea University College of Medicine, Ansan, Republic of Korea
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Choi J, Chang J, Jun HJ, Im GJ, Chae SW, Lee SH, Kwon SY, Jung HH, Chung AY, Park HC. Protective role of edaravone against neomycin-induced ototoxicity in zebrafish. J Appl Toxicol 2014; 34:554-61. [PMID: 24795994 DOI: 10.1002/jat.2964] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
Aminoglycosides such as neomycin are one of the most commonly prescribed types of antibiotics worldwide. However, these drugs appear to generate free radicals within the inner ear, which can result in permanent hearing loss. We evaluated the effects of edaravone, a neuroprotective agent, on neomycin-induced ototoxicity in transgenic zebrafish. The 5-day post fertilization (dpf) zebrafish larvae were exposed to 125 μM neomycin and various concentrations of edaravone for 1 h. Hair cell survival was calculated as average numbers of the hair cells in the control group, which was not exposed to neomycin. Ultrastructural changes were evaluated using a scanning electron microscope (SEM) and transmission electron microscope (TEM). Edaravone protected against neomycin-induced hair cell loss in the neuromasts (1000 μM: 11.6 ± 1.1 cells, neomycin only: 5.5 ± 0.5 cells; n = 10, P<0.05) and decreased the TUNEL reaction for detecting apoptosis. In ultrastructural analysis, structures of mitochondria and hair cells within neuromasts were preserved in zebrafish exposed to 125 μM neomycin and 1000 μM edaravone for 1 h. Edaravone protected against neomycin-induced hair cell loss by preventing apoptosis.
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MESH Headings
- Animals
- Animals, Genetically Modified
- Antipyrine/analogs & derivatives
- Antipyrine/pharmacology
- Apoptosis/drug effects
- Cells, Cultured
- Dose-Response Relationship, Drug
- Edaravone
- Embryo, Nonmammalian/drug effects
- Embryo, Nonmammalian/ultrastructure
- Hair Cells, Auditory/drug effects
- Hair Cells, Auditory/ultrastructure
- In Situ Nick-End Labeling
- Microscopy, Confocal
- Microscopy, Electron, Scanning
- Microscopy, Electron, Transmission
- Mitochondria/drug effects
- Mitochondria/ultrastructure
- Neomycin/toxicity
- Neuroprotective Agents/pharmacology
- Zebrafish/embryology
- Zebrafish/genetics
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Thomas ED, Cruz IA, Hailey DW, Raible DW. There and back again: development and regeneration of the zebrafish lateral line system. WILEY INTERDISCIPLINARY REVIEWS-DEVELOPMENTAL BIOLOGY 2014; 4:1-16. [PMID: 25330982 DOI: 10.1002/wdev.160] [Citation(s) in RCA: 65] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/23/2014] [Revised: 07/10/2014] [Accepted: 08/24/2014] [Indexed: 12/23/2022]
Abstract
The zebrafish lateral line is a sensory system used to detect changes in water flow. It is comprised of clusters of mechanosensory hair cells called neuromasts. The lateral line is initially established by a migratory group of cells, called a primordium, that deposits neuromasts at stereotyped locations along the surface of the fish. Wnt, FGF, and Notch signaling are all important regulators of various aspects of lateral line development, from primordium migration to hair cell specification. As zebrafish age, the organization of the lateral line becomes more complex in order to accommodate the fish's increased size. This expansion is regulated by many of the same factors involved in the initial development. Furthermore, unlike mammalian hair cells, lateral line hair cells have the capacity to regenerate after damage. New hair cells arise from the proliferation and differentiation of surrounding support cells, and the molecular and cellular pathways regulating this are beginning to be elucidated. All in all, the zebrafish lateral line has proven to be an excellent model in which to study a diverse array of processes, including collective cell migration, cell polarity, cell fate, and regeneration.
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Affiliation(s)
- Eric D Thomas
- Graduate Program in Neurobiology and Behavior, University of Washington, Seattle, WA, USA; Department of Biological Structure, University of Washington, Seattle, WA, USA
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Lush ME, Piotrowski T. Sensory hair cell regeneration in the zebrafish lateral line. Dev Dyn 2014; 243:1187-202. [PMID: 25045019 DOI: 10.1002/dvdy.24167] [Citation(s) in RCA: 74] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2014] [Revised: 07/12/2014] [Accepted: 07/14/2014] [Indexed: 12/19/2022] Open
Abstract
BACKGROUND Damage or destruction of sensory hair cells in the inner ear leads to hearing or balance deficits that can be debilitating, especially in older adults. Unfortunately, the damage is permanent, as regeneration of the inner ear sensory epithelia does not occur in mammals. RESULTS Zebrafish and other non-mammalian vertebrates have the remarkable ability to regenerate sensory hair cells and understanding the molecular and cellular basis for this regenerative ability will hopefully aid us in designing therapies to induce regeneration in mammals. Zebrafish not only possess hair cells in the ear but also in the sensory lateral line system. Hair cells in both organs are functionally analogous to hair cells in the inner ear of mammals. The lateral line is a mechanosensory system found in most aquatic vertebrates that detects water motion and aids in predator avoidance, prey capture, schooling, and mating. Although hair cell regeneration occurs in both the ear and lateral line, most research to date has focused on the lateral line due to its relatively simple structure and accessibility. CONCLUSIONS Here we review the recent discoveries made during the characterization of hair cell regeneration in zebrafish.
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Affiliation(s)
- Mark E Lush
- Stowers Institute for Medical Research, Kansas City, Missouri
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Montalbano G, Abbate F, Levanti MB, Germanà GP, Laurà R, Ciriaco E, Vega JA, Germanà A. Topographical and drug specific sensitivity of hair cells of the zebrafish larvae to aminoglycoside-induced toxicity. Ann Anat 2014; 196:236-40. [DOI: 10.1016/j.aanat.2014.01.005] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2013] [Revised: 12/16/2013] [Accepted: 01/21/2014] [Indexed: 10/25/2022]
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Stark MR. Vertebrate neurogenic placode development: historical highlights that have shaped our current understanding. Dev Dyn 2014; 243:1167-75. [PMID: 24899368 DOI: 10.1002/dvdy.24152] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2014] [Revised: 05/07/2014] [Accepted: 05/30/2014] [Indexed: 01/31/2023] Open
Abstract
With the flood of published research encountered today, it is important to occasionally reflect upon how we arrived at our current understanding in a particular scientific discipline, thereby positioning new discoveries into proper context with long-established models. This historical review highlights some of the important scientific contributions in the field of neurogenic placode development. By viewing cumulatively the rich historical data, we can more fully appreciate and apply what has been accomplished. Early descriptive work in fish and experimental approaches in amphibians and chick yielded important conceptual models of placode induction and cellular differentiation. Current efforts to discover genes and their molecular functions continue to expand our understanding of the placodes. Carefully considering the body of work may improve current models and help focus modern experimental design.
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Affiliation(s)
- Michael R Stark
- Department of Physiology & Developmental Biology, Brigham Young University, Provo, UT, 84602
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Effect of intratympanic dimethyl sulphoxide (DMSO) in an in vivo model of cisplatin-related ototoxicity. Eur Arch Otorhinolaryngol 2014; 271:3121-6. [DOI: 10.1007/s00405-014-2957-y] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2013] [Accepted: 02/17/2014] [Indexed: 12/14/2022]
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Coffin AB, Williamson KL, Mamiya A, Raible DW, Rubel EW. Profiling drug-induced cell death pathways in the zebrafish lateral line. Apoptosis 2014; 18:393-408. [PMID: 23413197 DOI: 10.1007/s10495-013-0816-8] [Citation(s) in RCA: 58] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Programmed cell death (PCD) is an important process in development and disease, as it allows the body to rid itself of unwanted or damaged cells. However, PCD pathways can also be activated in otherwise healthy cells. One such case occurs in sensory hair cells of the inner ear following exposure to ototoxic drugs, resulting in hearing loss and/or balance disorders. The intracellular pathways that determine if hair cells die or survive following this or other ototoxic challenges are incompletely understood. We use the larval zebrafish lateral line, an external hair cell-bearing sensory system, as a platform for profiling cell death pathways activated in response to ototoxic stimuli. In this report the importance of each pathway was assessed by screening a custom cell death inhibitor library for instances when pathway inhibition protected hair cells from the aminoglycosides neomycin or gentamicin, or the chemotherapy agent cisplatin. This screen revealed that each ototoxin likely activated a distinct subset of possible cell death pathways. For example, the proteasome inhibitor Z-LLF-CHO protected hair cells from either aminoglycoside or from cisplatin, while D-methionine, an antioxidant, protected hair cells from gentamicin or cisplatin but not from neomycin toxicity. The calpain inhibitor leupeptin primarily protected hair cells from neomycin, as did a Bax channel blocker. Neither caspase inhibition nor protein synthesis inhibition altered the progression of hair cell death. Taken together, these results suggest that ototoxin-treated hair cells die via multiple processes that form an interactive network of cell death signaling cascades.
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Affiliation(s)
- Allison B Coffin
- Virginia Merrill Bloedel Hearing Research Center, University of Washington, Box 357923, Seattle, WA 98195, USA.
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Protective Role of Trimetazidine Against Neomycin-induced Hair Cell Damage in Zebrafish. Clin Exp Otorhinolaryngol 2013; 6:219-25. [PMID: 24353861 PMCID: PMC3863670 DOI: 10.3342/ceo.2013.6.4.219] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2012] [Revised: 11/06/2012] [Accepted: 11/15/2012] [Indexed: 11/29/2022] Open
Abstract
Objectives Trimetazidine (TMZ) is known to reduce the generation of oxygen-derived free radicals. The objective of the present study was to evaluate the effects of TMZ on neomycin-induced ototoxicity in transgenic zebrafish (Brn3C: EGFP). Methods Five-day, postfertilization zebrafish larvae were exposed to 125 µM neomycin and one of the following TMZ concentrations for 1 hour: 10 µM, 100 µM, 500 µM, 1,000 µM, 1,500 µM, or 2,000 µM. Hair cells within the neuromasts of the supraorbital (SO1 and SO2), otic (O1), and occipital (OC1) lateral lines were analyzed using fluorescence microscopy and confocal microscopy (n=10). Hair cell survival was calculated as a percentage of hair cells in the control group that were not exposed to neomycin. Ultrastructural changes were evaluated using scanning electron microscopy. Results TMZ protected against neomycin-induced hair cell loss in the neuromasts (TMZ 1,000 µM, 11.2±0.4 cells; 125 µM neomycin only, 4.2±0.5 cells; n=10; P<0.05) and decreased the terminal deoxynucleotidyl transferase (TdT)-mediated dUTP-biotin nick end labeling (TUNEL) reaction. In the ultrastructural analysis, structures of mitochondria and hair cells within the neuromasts were preserved in zebrafish exposed to 125 µM neomycin and 1,000 µM TMZ. Conclusion TMZ attenuated neomycin-induced hair cell loss in zebrafish. The results of this study suggest that neomycin induces apoptosis, and that apoptotic cell death can be prevented by treatment with tremetazidine.
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Protective role of NecroX-5 against neomycin-induced hair cell damage in zebrafish. Arch Toxicol 2013; 88:435-41. [PMID: 24030356 DOI: 10.1007/s00204-013-1124-3] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2013] [Accepted: 08/22/2013] [Indexed: 10/26/2022]
Abstract
NecroX-5, one of the derivatives of NecroX series compounds, is a mitochondrial reactive oxygen species and reactive nitrogen species scavenger that inhibits cell death against various kinds of oxidative stresses. The objective of the present study was to evaluate the effects of NecroX-5 on neomycin-induced ototoxicity in transgenic zebrafish (Brn3C: EGFP). Five days post-fertilization, zebrafish larvae were exposed to 125 μM neomycin and one of the following NecroX-5 concentrations for 1 h: 10, 25, 50, and 75 μM. Hair cells within the neuromasts of the supraorbital (SO1 and SO2), otic (O1), and occipital (OC1) lateral lines were analyzed using fluorescence microscopy (n = 10). The terminal deoxynucleotidyl transferase-mediated dUTP-biotin nick end labeling (TUNEL) assay and 2-[4-(dimethylamino) styryl]-N-ethylpyridiniumiodide (DASPEI) assay were performed for evaluation of apoptosis and mitochondrial damage. Ultrastructural changes were evaluated using scanning electron microscopy. NecroX-5 decreased neomycin-induced hair cell loss in the neuromasts (NecroX-5 50 μM: 13.4 ± 2.0 cells, 125 μM neomycin only: 8.1 ± 1.2 cells; n = 10, P < 0.05) and decreased the TUNEL reaction. The ultrastructural analysis showed that the structures of mitochondria and hair cells within the neuromasts were preserved in zebrafish exposed to 125 μM neomycin and 50 μM NecroX-5. NecroX-5 decreased apoptosis and mitochondrial damage. In conclusion, NecroX-5 attenuated neomycin-induced hair cell loss in zebrafish.
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Disruption of intracellular calcium regulation is integral to aminoglycoside-induced hair cell death. J Neurosci 2013; 33:7513-25. [PMID: 23616556 DOI: 10.1523/jneurosci.4559-12.2013] [Citation(s) in RCA: 64] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
Intracellular Ca(2+) is a key regulator of life or death decisions in cultured neurons and sensory cells. The role of Ca(2+) in these processes is less clear in vivo, as the location of these cells often impedes visualization of intracellular Ca(2+) dynamics. We generated transgenic zebrafish lines that express the genetically encoded Ca(2+) indicator GCaMP in mechanosensory hair cells of the lateral line. These lines allow us to monitor intracellular Ca(2+) dynamics in real time during aminoglycoside-induced hair cell death. After exposure of live larvae to aminoglycosides, dying hair cells undergo a transient increase in intracellular Ca(2+) that occurs shortly after mitochondrial membrane potential collapse. Inhibition of intracellular Ca(2+) elevation through either caged chelators or pharmacological inhibitors of Ca(2+) effectors mitigates toxic effects of aminoglycoside exposure. Conversely, artificial elevation of intracellular Ca(2+) by caged Ca(2+) release agents sensitizes hair cells to the toxic effects of aminoglycosides. These data suggest that alterations in intracellular Ca(2+) homeostasis play an essential role in aminoglycoside-induced hair cell death, and indicate several potential therapeutic targets to stem ototoxicity.
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Hong SJ, Im GJ, Chang J, Chae SW, Lee SH, Kwon SY, Jung HH, Chung AY, Park HC, Choi J. Protective effects of edaravone against cisplatin-induced hair cell damage in zebrafish. Int J Pediatr Otorhinolaryngol 2013; 77:1025-31. [PMID: 23628221 DOI: 10.1016/j.ijporl.2013.04.003] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/20/2012] [Revised: 03/31/2013] [Accepted: 04/06/2013] [Indexed: 10/26/2022]
Abstract
OBJECTIVE Edaravone is known to have a potent free radical scavenging effect. The objective of the present study was to evaluate the effects of edaravone on cisplatin-induced ototoxicity in transgenic zebrafish (Brn3C: EGFP). METHODS Five day post-fertilization zebrafish larvae were exposed to 1000 μM cisplatin and 50 μM, 100 μM, 250 μM, 500 μM, 750 μM, and 1000 μM concentrations of edaravone for 4h. Hair cells within neuromasts of the supraorbital (SO1 and SO2), otic (O1), and occipital (OC1) lateral lines were analyzed by fluorescence microscopy and confocal microscopy (n=10). Hair cell survival was calculated as a percentage of the hair cells in the control group that were not exposed to cisplatin. Ultrastructural changes were evaluated using scanning electron microscopy and transmission electron microscopy. RESULTS Edaravone protected cisplatin-induced hair cell loss of neuromasts (edaravone 750 μM: 8.7 ± 1.5 cells, cisplatin 1000 μM only: 3.7 ± 0.9 cells; n=10, p<0.0001) and decreased the Terminal deoxynucleotidyl transferase (TdT)-mediated dUTP-biotin nick end labeling (TUNEL) reaction. Structures of mitochondria and hair cell within neuromasts in ultrastructural analysis were preserved in zebrafish exposed to 1000 μM cisplatin and 750 μM edaravone for 4h. CONCLUSIONS Edaravone attenuated cisplatin-induced hair cell damage in zebrafish. The results of the current study suggest that cisplatin induces apoptosis, and the apoptotic cell death can be prevented by treatment with edaravone in zebrafish.
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Affiliation(s)
- Seok Jin Hong
- Department of Otorhinolaryngology-Head and Neck Surgery, Korea University College of Medicine, Ansan-City, South Korea
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Uribe PM, Mueller MA, Gleichman JS, Kramer MD, Wang Q, Sibrian-Vazquez M, Strongin RM, Steyger PS, Cotanche DA, Matsui JI. Dimethyl sulfoxide (DMSO) exacerbates cisplatin-induced sensory hair cell death in zebrafish (Danio rerio). PLoS One 2013; 8:e55359. [PMID: 23383324 PMCID: PMC3562182 DOI: 10.1371/journal.pone.0055359] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2012] [Accepted: 12/28/2012] [Indexed: 12/13/2022] Open
Abstract
Inner ear sensory hair cells die following exposure to aminoglycoside antibiotics or chemotherapeutics like cisplatin, leading to permanent auditory and/or balance deficits in humans. Zebrafish (Danio rerio) are used to study drug-induced sensory hair cell death since their hair cells are similar in structure and function to those found in humans. We developed a cisplatin dose-response curve using a transgenic line of zebrafish that expresses membrane-targeted green fluorescent protein under the control of the Brn3c promoter/enhancer. Recently, several small molecule screens have been conducted using zebrafish to identify potential pharmacological agents that could be used to protect sensory hair cells in the presence of ototoxic drugs. Dimethyl sulfoxide (DMSO) is typically used as a solvent for many pharmacological agents in sensory hair cell cytotoxicity assays. Serendipitously, we found that DMSO potentiated the effects of cisplatin and killed more sensory hair cells than treatment with cisplatin alone. Yet, DMSO alone did not kill hair cells. We did not observe the synergistic effects of DMSO with the ototoxic aminoglycoside antibiotic neomycin. Cisplatin treatment with other commonly used organic solvents (i.e. ethanol, methanol, and polyethylene glycol 400) also did not result in increased cell death compared to cisplatin treatment alone. Thus, caution should be exercised when interpreting data generated from small molecule screens since many compounds are dissolved in DMSO.
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Affiliation(s)
- Phillip M. Uribe
- Department of Neuroscience, Pomona College, Claremont, California, United States of America
| | - Melissa A. Mueller
- Department of Molecular and Cellular Biology, Harvard University, Cambridge, Massachusetts, United States of America
| | - Julia S. Gleichman
- Department of Neuroscience, Pomona College, Claremont, California, United States of America
| | - Matthew D. Kramer
- Department of Molecular and Cellular Biology, Harvard University, Cambridge, Massachusetts, United States of America
| | - Qi Wang
- Oregon Hearing Research Center, Department of Otolaryngology, Oregon Health & Science University, Portland, Oregon, United States of America
| | - Martha Sibrian-Vazquez
- Department of Chemistry, Portland State University, Portland, Oregon, United States of America
| | - Robert M. Strongin
- Department of Chemistry, Portland State University, Portland, Oregon, United States of America
| | - Peter S. Steyger
- Oregon Hearing Research Center, Department of Otolaryngology, Oregon Health & Science University, Portland, Oregon, United States of America
| | - Douglas A. Cotanche
- Harvard-MIT Health Sciences and Technology, Cambridge, Massachusetts, United States of America
- Harvard Noise-Induced Hearing Loss Research Group, Harvard School of Public Health, Boston, Massachusetts, United States of America
- Department of Otolaryngology and Communication Enhancement, Boston Children’s Hospital, Boston, Massachusetts, United States of America
| | - Jonathan I. Matsui
- Department of Neuroscience, Pomona College, Claremont, California, United States of America
- Department of Molecular and Cellular Biology, Harvard University, Cambridge, Massachusetts, United States of America
- Department of Otolaryngology and Communication Enhancement, Boston Children’s Hospital, Boston, Massachusetts, United States of America
- * E-mail:
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Takaki K, Cosma CL, Troll MA, Ramakrishnan L. An in vivo platform for rapid high-throughput antitubercular drug discovery. Cell Rep 2012; 2:175-84. [PMID: 22840407 DOI: 10.1016/j.celrep.2012.06.008] [Citation(s) in RCA: 66] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2012] [Revised: 05/18/2012] [Accepted: 06/11/2012] [Indexed: 11/19/2022] Open
Abstract
Treatment of tuberculosis, like other infectious diseases, is increasingly hindered by the emergence of drug resistance. Drug discovery efforts would be facilitated by facile screening tools that incorporate the complexities of human disease. Mycobacterium marinum-infected zebrafish larvae recapitulate key aspects of tuberculosis pathogenesis and drug treatment. Here, we develop a model for rapid in vivo drug screening using fluorescence-based methods for serial quantitative assessment of drug efficacy and toxicity. We provide proof-of-concept that both traditional bacterial-targeting antitubercular drugs and newly identified host-targeting drugs would be discovered through the use of this model. We demonstrate the model's utility for the identification of synergistic combinations of antibacterial drugs and demonstrate synergy between bacterial- and host-targeting compounds. Thus, the platform can be used to identify new antibacterial agents and entirely new classes of drugs that thwart infection by targeting host pathways. The methods developed here should be widely applicable to small-molecule screens for other infectious and noninfectious diseases.
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Affiliation(s)
- Kevin Takaki
- Department of Microbiology, University of Washington, Seattle, WA 98195, USA
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Canlon B. Introduction to Annual Reviews 2012. Hear Res 2012. [DOI: 10.1016/j.heares.2012.05.010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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