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Marin M, Annunziato KM, Tompach MC, Liang W, Zahn SM, Li S, Doherty J, Lee J, Clark JM, Park Y, Timme-Laragy AR. Maternal PFOS exposure affects offspring development in Nrf2-dependent and independent ways in zebrafish (Danio rerio). AQUATIC TOXICOLOGY (AMSTERDAM, NETHERLANDS) 2024; 271:106923. [PMID: 38669778 PMCID: PMC11177596 DOI: 10.1016/j.aquatox.2024.106923] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/05/2024] [Revised: 03/29/2024] [Accepted: 04/11/2024] [Indexed: 04/28/2024]
Abstract
Perfluorooctanesulfonic acid (PFOS) is a ubiquitous legacy environmental contaminant detected broadly in human samples and water supplies. PFOS can cross the placenta and has been detected in cord blood and breastmilk samples, underscoring the importance of understanding the impacts of maternal PFOS exposure during early development. This study aimed to investigate the effects of a preconception exposure to PFOS on developmental endpoints in offspring, as well as examine the role of the transcription factor Nuclear factor erythroid-2-related factor (Nrf2a) in mediating these effects. This transcription factor regulates the expression of several genes that protect cells against oxidative stress including during embryonic development. Adult female zebrafish were exposed to 0.02, 0.08 or 0.14 mg/L PFOS for 1 week (duration of one cycle of oocyte maturation) and then paired with unexposed males from Nrf2a mutant or wildtype strains. Embryos were collected for two weeks or until completion of 5 breeding events. PFOS was maternally transferred to offspring independent of genotype throughout all breeding events in a dose-dependent manner, ranging from 2.77 to 23.72 ng/embryo in Nrf2a wildtype and 2.40 to 15.80 ng/embryo in Nrf2a mutants. Although embryo viability at collection was not impacted by maternal PFOS exposure, developmental effects related to nutrient uptake, growth and pancreatic β-cell morphology were observed and differed based on genotype. Triglyceride levels were increased in Nrf2a wildtype eggs from the highest PFOS group. In Nrf2a wildtype larvae there was a decrease in yolk sac uptake while in Nrf2a mutants there was an increase. Additionally, there was a significant decrease in pancreatic β-cell (islet) area in wildtype larvae from the 0.14 mg/L PFOS accompanied by an increase in the prevalence of abnormal islet morphologies compared to controls. Abnormal morphology was also observed in the 0.02 and 0.08 mg/L PFOS groups. Interestingly, in Nrf2a mutants there was a significant increase in the pancreatic β-cell area in the 0.02 and 0.08 mg/L PFOS groups and no changes in the prevalence of abnormal islet morphologies. These results suggest that the regulation of processes like nutrient consumption, growth and pancreatic β-cell development are at least partially modulated by the presence of a functional Nrf2a transcriptomic response. Overall, preconception exposure to environmental pollutants, such as PFOS, may impact the maturing oocyte and cause subtle changes that can ultimately impact offspring health and development.
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Affiliation(s)
- Marjorie Marin
- Department of Environmental Health Sciences, University of Massachusetts, Amherst, MA, USA; Biotechnology Training Program, University of Massachusetts, Amherst, MA, USA
| | - Kate M Annunziato
- Department of Environmental Health Sciences, University of Massachusetts, Amherst, MA, USA
| | - Madeline C Tompach
- Department of Environmental Health Sciences, University of Massachusetts, Amherst, MA, USA; Biotechnology Training Program, University of Massachusetts, Amherst, MA, USA; Molecular and Cellular Biology Graduate Program, University of Massachusetts, Amherst, MA, USA
| | - Wenle Liang
- Department of Environmental Health Sciences, University of Massachusetts, Amherst, MA, USA
| | - Sarah M Zahn
- Department of Environmental Health Sciences, University of Massachusetts, Amherst, MA, USA
| | - Sida Li
- Department of Food Science, University of Massachusetts, Amherst, MA, USA
| | - Jeffery Doherty
- Department of Veterinary and Animal Science, University of Massachusetts, Amherst, MA, USA
| | - Jonghwa Lee
- Department of Veterinary and Animal Science, University of Massachusetts, Amherst, MA, USA
| | - John M Clark
- Department of Veterinary and Animal Science, University of Massachusetts, Amherst, MA, USA
| | - Yeonhwa Park
- Department of Food Science, University of Massachusetts, Amherst, MA, USA
| | - Alicia R Timme-Laragy
- Department of Environmental Health Sciences, University of Massachusetts, Amherst, MA, USA; Molecular and Cellular Biology Graduate Program, University of Massachusetts, Amherst, MA, USA.
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Almeida LM, Lima LP, Oliveira NAS, Silva RFO, Sousa B, Bessa J, Pinho BR, Oliveira JMA. PERK inhibition in zebrafish mimics human Wolcott-Rallison syndrome phenotypes. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2024:2024.04.16.589737. [PMID: 38659860 PMCID: PMC11042256 DOI: 10.1101/2024.04.16.589737] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/26/2024]
Abstract
Wolcott-Rallison Syndrome (WRS) is the most common cause of permanent neonatal diabetes mellitus among consanguineous families. The diabetes associated with WRS is non-autoimmune, insulin-requiring and associated with skeletal dysplasia and growth retardation. The therapeutic options for WRS patients rely on permanent insulin pumping or on invasive transplants of liver and pancreas. WRS has a well identified genetic cause: loss-of-function mutations in the gene coding for an endoplasmic reticulum kinase named PERK (protein kinase R-like ER kinase). Currently, WRS research is facilitated by cellular and rodent models with PERK ablation. While these models have unique strengths, cellular models incompletely replicate the organ/system-level complexity of WRS, and rodents have limited scalability for efficiently screening potential therapeutics. To address these challenges, we developed a new in vivo model of WRS by pharmacologically inhibiting PERK in zebrafish. This small vertebrate displays high fecundity, rapid development of organ systems and is amenable to highly efficient in vivo drug testing. PERK inhibition in zebrafish produced typical WRS phenotypes such as glucose dysregulation, skeletal defects, and impaired development. PERK inhibition in zebrafish also produced broad-spectrum WRS phenotypes such as impaired neuromuscular function, compromised cardiac function and muscular integrity. These results show that zebrafish holds potential as a versatile model to study WRS mechanisms and contribute to the identification of promising therapeutic options for WRS.
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Tompach MC, Gridley CK, Li S, Clark JM, Park Y, Timme-Laragy AR. Comparing the effects of developmental exposure to alpha lipoic acid (ALA) and perfluorooctanesulfonic acid (PFOS) in zebrafish (Danio rerio). Food Chem Toxicol 2024; 186:114560. [PMID: 38432440 PMCID: PMC11034762 DOI: 10.1016/j.fct.2024.114560] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2023] [Revised: 02/14/2024] [Accepted: 02/29/2024] [Indexed: 03/05/2024]
Abstract
Alpha lipoic acid (ALA) is a dietary supplement that has been used to treat a wide range of diseases, including obesity and diabetes, and have lipid-lowering effects, making it a potential candidate for mitigating dyslipidemia resulting from exposures to the per- and polyfluoroalkyl substance (PFAS) family member perfluorooctanesulfonic acid (PFOS). ALA can be considered a non-fluorinated structural analog to PFOS due to their similar 8-carbon chain and amphipathic structure, but, unlike PFOS, is rapidly metabolized. PFOS has been shown to reduce pancreatic islet area and induce β-cell lipotoxicity, indicating that changes in β-cell lipid microenvironment is a mechanism contributing to hypomorphic islets. Due to structural similarities, we hypothesized that ALA may compete with PFOS for binding to proteins and distribution throughout the body to mitigate the effects of PFOS exposure. However, ALA alone reduced islet area and fish length, with several morphological endpoints indicating additive toxicity in the co-exposures. Individually, ALA and PFOS increased fatty acid uptake from the yolk. ALA alone increased liver lipid accumulation, altered fatty acid profiling and modulated PPARɣ pathway signaling. Together, this work demonstrates that ALA and PFOS have similar effects on lipid uptake and metabolism during embryonic development in zebrafish.
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Affiliation(s)
- Madeline C Tompach
- Molecular and Cellular Biology Graduate Program, University of Massachusetts Amherst, Amherst, MA, 01003, USA; Biotechnology Training Program, University of Massachusetts Amherst, Amherst, MA, 01003, USA
| | - Charlotte K Gridley
- Molecular and Cellular Biology Graduate Program, University of Massachusetts Amherst, Amherst, MA, 01003, USA
| | - Sida Li
- Department of Food Science, University of Massachusetts Amherst, Amherst, MA, 01003, USA
| | - John M Clark
- Department of Veterinary and Animal Sciences, University of Massachusetts Amherst, Amherst, MA, 01003, USA
| | - Yeonhwa Park
- Department of Food Science, University of Massachusetts Amherst, Amherst, MA, 01003, USA
| | - Alicia R Timme-Laragy
- Molecular and Cellular Biology Graduate Program, University of Massachusetts Amherst, Amherst, MA, 01003, USA; Department of Environmental Health Sciences, University of Massachusetts Amherst, Amherst, MA, 01003, USA.
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Wang Y, Peng H, Yu H. Bixafen causes hepatotoxicity and pancreas toxicity in zebrafish (Danio rerio). ECOTOXICOLOGY (LONDON, ENGLAND) 2023; 32:837-844. [PMID: 37597064 DOI: 10.1007/s10646-023-02687-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Accepted: 08/01/2023] [Indexed: 08/21/2023]
Abstract
Bixafen (BIX), a widely used succinate dehydrogenase inhibitor (SDHI) in agricultural disease control, has garnered significant attention due to its known hazardous effects on aquatic organisms. In this study, we exposed zebrafish embryos to 0.1, 0.2, and 0.3 μM BIX, to explore the impact of BIX on liver and pancreas. The results showed that BIX caused deformities and dysfunction in zebrafish embryos, including spinal curvature, pericardial edema, heart rate decrease, and hatching delay. Moreover, BIX significantly affected the development of the liver and pancreas in zebrafish and downregulated zebrafish fabp10a gene expression. Overall, this study presents strong evidence for BIX's potential toxicity to zebrafish liver and pancreas. The results may provide new insights into the evaluation of BIX'S impact on aquatic organisms.
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Affiliation(s)
- Yini Wang
- College of Chemical Engineering, Huaqiao University, Xiamen, Fujian Province, China
| | - Huihan Peng
- College of Chemical Engineering, Huaqiao University, Xiamen, Fujian Province, China
| | - Hailing Yu
- College of Chemical Engineering, Huaqiao University, Xiamen, Fujian Province, China.
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Tucker TR, Knitter CA, Khoury DM, Eshghi S, Tran S, Sharrock AV, Wiles TJ, Ackerley DF, Mumm JS, Parsons MJ. An inducible model of chronic hyperglycemia. Dis Model Mech 2023; 16:dmm050215. [PMID: 37401381 PMCID: PMC10417516 DOI: 10.1242/dmm.050215] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2023] [Accepted: 06/28/2023] [Indexed: 07/05/2023] Open
Abstract
Transgene driven expression of Escherichia coli nitroreductase (NTR1.0) renders animal cells susceptible to the antibiotic metronidazole (MTZ). Many NTR1.0/MTZ ablation tools have been reported in zebrafish, which have significantly impacted regeneration studies. However, NTR1.0-based tools are not appropriate for modeling chronic cell loss as prolonged application of the required MTZ dose (10 mM) is deleterious to zebrafish health. We established that this dose corresponds to the median lethal dose (LD50) of MTZ in larval and adult zebrafish and that it induced intestinal pathology. NTR2.0 is a more active nitroreductase engineered from Vibrio vulnificus NfsB that requires substantially less MTZ to induce cell ablation. Here, we report on the generation of two new NTR2.0-based zebrafish lines in which acute β-cell ablation can be achieved without MTZ-associated intestinal pathology. For the first time, we were able to sustain β-cell loss and maintain elevated glucose levels (chronic hyperglycemia) in larvae and adults. Adult fish showed significant weight loss, consistent with the induction of a diabetic state, indicating that this paradigm will allow the modeling of diabetes and associated pathologies.
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Affiliation(s)
- Tori R. Tucker
- Department of Developmental and Cell Biology, University of California, Irvine, Natural Sciences II, Irvine, CA 92697, USA
| | - Courtney A. Knitter
- Department of Molecular Biology and Biochemistry, University of California, Irvine, Natural Sciences II, Irvine, CA 92697, USA
| | - Deena M. Khoury
- Department of Developmental and Cell Biology, University of California, Irvine, Natural Sciences II, Irvine, CA 92697, USA
| | - Sheida Eshghi
- Department of Developmental and Cell Biology, University of California, Irvine, Natural Sciences II, Irvine, CA 92697, USA
| | - Sophia Tran
- Department of Developmental and Cell Biology, University of California, Irvine, Natural Sciences II, Irvine, CA 92697, USA
| | - Abigail V. Sharrock
- School of Biological Sciences, Victoria University of Wellington, Wellington 6012, New Zealand
| | - Travis J. Wiles
- Department of Molecular Biology and Biochemistry, University of California, Irvine, Natural Sciences II, Irvine, CA 92697, USA
| | - David F. Ackerley
- School of Biological Sciences, Victoria University of Wellington, Wellington 6012, New Zealand
| | - Jeff S. Mumm
- Department of Ophthalmology, The Wilmer Eye Institute, Johns Hopkins University, Baltimore, MD, USA
| | - Michael J. Parsons
- Department of Developmental and Cell Biology, University of California, Irvine, Natural Sciences II, Irvine, CA 92697, USA
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Konadu B, Cox CK, Garrett MR, Gibert Y. Excess glucose or fat differentially affects metabolism and appetite-related gene expression during zebrafish embryogenesis. iScience 2023; 26:107063. [PMID: 37534154 PMCID: PMC10391732 DOI: 10.1016/j.isci.2023.107063] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2022] [Revised: 03/28/2023] [Accepted: 06/02/2023] [Indexed: 08/04/2023] Open
Abstract
Zebrafish embryos use their yolk sac reserve as the sole nutrient source during embryogenesis. The two main forms of energy fuel can be found in the form of glucose or fat. Zebrafish embryos were exposed to glucose or injected with free fatty acid/Triacylglycerol (FFA/TAG) into the yolk sac at 24 hpf. At 72 hpf, glucose exposed or FFA/TAG injected had differential effects on gene expression in embryos, with fat activating lipolysis and β-oxidation and glucose activating the insulin pathway. Bulk RNA-seq revealed that more gene expression was affected by glucose exposure compared to FFA/TAGs injection. Appetite-controlling genes were also differently affected by glucose exposure or FFA/TAG injections. Because the embryo did not yet feed itself at the time of our analysis, gene expression changes occurred in absence of actual hunger and revealed how the embryo manages its nutrient intake before active feeding.
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Affiliation(s)
- Bridget Konadu
- Department of Cell and Molecular Biology, Cancer Center and Research Institute, University of Mississippi Medical Center, Jackson, MS 39216, USA
| | - Carol K. Cox
- Department of Cell and Molecular Biology, Cancer Center and Research Institute, University of Mississippi Medical Center, Jackson, MS 39216, USA
| | - Michael R. Garrett
- Department of Pharmacology and Toxicology, University of Mississippi Medical Center, Jackson, MS 39216, USA
| | - Yann Gibert
- Department of Cell and Molecular Biology, Cancer Center and Research Institute, University of Mississippi Medical Center, Jackson, MS 39216, USA
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7
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Leonard ER, Marques ES, Roy MA, Conlin SM, Ranjan R, Timme-Laragy AR. Dietary exposure to the food preservative tert-Butylhydroquinone (tBHQ) impairs zebrafish (Danio rerio) survival, growth, organ development, and gene expression in Nrf2a-dependent and independent ways. Food Chem Toxicol 2023; 176:113788. [PMID: 37075880 PMCID: PMC10213143 DOI: 10.1016/j.fct.2023.113788] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2022] [Revised: 04/04/2023] [Accepted: 04/15/2023] [Indexed: 04/21/2023]
Abstract
Tert-Butylhydroquinone (tBHQ), a preservative used to prevent oxidative deterioration of oil, fat, and meat products, has been linked to both chemoprotective and adverse effects. This study investigates the impact of dietary tBHQ consumption on survival, growth parameters, organ development, and gene expression in zebrafish (Danio rerio). As tBHQ activates the transcription factor nuclear factor erythroid 2-related factor 2 (Nrf2a), a zebrafish line with a mutation in the DNA-binding domain of Nrf2a was used to identify Nrf2a-dependent vs independent effects. Homozygous Nrf2a wildtype (wt) and mutant (m) larvae were fed a diet containing 5% tBHQ or a control diet. Survival and growth parameters were assessed at 15 days and at 5 months, and samples were collected for RNA sequencing at 5 months. Dietary exposure to tBHQ throughout the larval and juvenile periods negatively impacted growth and survival. RNA-seq analysis found differentially expressed genes related to growth and development and upregulation of several immune system-related pathways. The findings herein demonstrate that dietary tBHQ exposure may impair growth and survival in both Nrf2a dependent and independent manners.
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Affiliation(s)
- Emily R Leonard
- Department of Environmental Health Sciences, School of Public Health and Health Sciences, University of Massachusetts Amherst, Amherst, MA, 01003, USA
| | - Emily S Marques
- Department of Environmental Health Sciences, School of Public Health and Health Sciences, University of Massachusetts Amherst, Amherst, MA, 01003, USA
| | - Monika A Roy
- Department of Environmental Health Sciences, School of Public Health and Health Sciences, University of Massachusetts Amherst, Amherst, MA, 01003, USA; Biotechnology Training Program, University of Massachusetts Amherst, Amherst, MA, 01003, USA
| | - Sarah M Conlin
- Department of Environmental Health Sciences, School of Public Health and Health Sciences, University of Massachusetts Amherst, Amherst, MA, 01003, USA
| | - Ravi Ranjan
- Genomics Resource Laboratory, Institute for Applied Life Sciences, University of Massachusetts Amherst, Amherst, MA, 01003, USA
| | - Alicia R Timme-Laragy
- Department of Environmental Health Sciences, School of Public Health and Health Sciences, University of Massachusetts Amherst, Amherst, MA, 01003, USA.
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8
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Research Progress on the Construction and Application of a Diabetic Zebrafish Model. Int J Mol Sci 2023; 24:ijms24065195. [PMID: 36982274 PMCID: PMC10048833 DOI: 10.3390/ijms24065195] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2023] [Revised: 03/03/2023] [Accepted: 03/07/2023] [Indexed: 03/11/2023] Open
Abstract
Diabetes is a metabolic disease characterized by high blood glucose levels. With economic development and lifestyle changes, the prevalence of diabetes is increasing yearly. Thus, it has become an increasingly serious public health problem in countries around the world. The etiology of diabetes is complex, and its pathogenic mechanisms are not completely clear. The use of diabetic animal models is helpful in the study of the pathogenesis of diabetes and the development of drugs. The emerging vertebrate model of zebrafish has many advantages, such as its small size, large number of eggs, short growth cycle, simple cultivation of adult fish, and effective improvement of experimental efficiency. Thus, this model is highly suitable for research as an animal model of diabetes. This review not only summarizes the advantages of zebrafish as a diabetes model, but also summarizes the construction methods and challenges of zebrafish models of type 1 diabetes, type 2 diabetes, and diabetes complications. This study provides valuable reference information for further study of the pathological mechanisms of diabetes and the research and development of new related therapeutic drugs.
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9
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Wilson PW, Cho C, Allsing N, Khanum S, Bose P, Grubschmidt A, Sant KE. Tris(4-chlorophenyl)methane and tris(4-chlorophenyl)methanol disrupt pancreatic organogenesis and gene expression in zebrafish embryos. Birth Defects Res 2023; 115:458-473. [PMID: 36470842 DOI: 10.1002/bdr2.2132] [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: 10/03/2022] [Revised: 11/08/2022] [Accepted: 11/21/2022] [Indexed: 12/12/2022]
Abstract
OBJECTIVES Tris(4-chlorophenyl) methane (TCPM) and tris(4-chlorophenyl)methanol (TCPMOH) are anthropogenic environmental contaminants believed to be manufacturing byproducts of the organochlorine pesticide dichlorodiphenyltrichloroethane (DDT) due to environmental co-occurrence. TCPM and TCPMOH are persistent, bioaccumulate in the environment, and are detected in human breast milk and adipose tissues. DDT exposures have been previously shown to disrupt insulin signaling and glucoregulation, increasing risk for diabetes. We have previously shown that embryonic exposures organochlorines such as polychlorinated biphenyls disrupted pancreatic development and early embryonic glucoregulatory networks. Here, we determined the impacts of the similar compounds TCPM and TCPMOH on zebrafish pancreatic growth and gene expression following developmental exposures. METHODS Zebrafish embryos were exposed to 50 nM TCPM or TCPMOH beginning at 24 hr postfertilization (hpf) and exposures were refreshed daily. At 96 hpf, pancreatic growth and islet area were directly visualized in Tg(ptf1a::GFP) and Tg(insulin::GFP) embryos, respectively, using microscopy. Gene expression was assessed at 100 hpf with RNA sequencing. RESULTS Islet and total pancreas area were reduced by 20.8% and 13% in embryos exposed to 50 nM TCPMOH compared to controls. TCPM did not induce significant morphological changes to the developing pancreas, indicating TCPMOH, but not TCPM, impairs pancreatic development despite similarity in molecular responses. Transcriptomic responses to TCPM and TCPMOH were correlated (R2 = .903), and pathway analysis found downregulation of processes including retinol metabolism, circadian rhythm, and steroid biosynthesis. CONCLUSION Overall, our data suggest that TCPM and TCPMOH may be hazardous to embryonic growth and development.
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Affiliation(s)
- Peyton W Wilson
- School of Public Health, San Diego State University, San Diego, California, USA
| | - Christine Cho
- School of Public Health, San Diego State University, San Diego, California, USA
| | - Nicholas Allsing
- School of Public Health, San Diego State University, San Diego, California, USA
| | - Saleha Khanum
- School of Public Health, San Diego State University, San Diego, California, USA
| | - Pria Bose
- School of Public Health, San Diego State University, San Diego, California, USA
| | - Ava Grubschmidt
- School of Public Health, San Diego State University, San Diego, California, USA
| | - Karilyn E Sant
- School of Public Health, San Diego State University, San Diego, California, USA
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Sopel N, Müller-Deile J. Zebrafish Model to Study Podocyte Function Within the Glomerular Filtration Barrier. Methods Mol Biol 2023; 2664:145-157. [PMID: 37423988 DOI: 10.1007/978-1-0716-3179-9_11] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/11/2023]
Abstract
The zebrafish model has been used in many different fields of research because of its high homology to the human genome, its easy genetic manipulation, its high fecundity, and its rapid development. For glomerular diseases, zebrafish larvae have proven to be a versatile tool to study the contribution of different genes, because the zebrafish pronephros is very comparable to the human kidney in function and ultrastructure. Here we describe the principle and use of a simple screening assay based on the measurement of the fluorescence in the retinal vessel plexus of the Tg(l-fabp:DBP:eGFP) zebrafish line ("eye assay") to indirectly determine proteinuria as a hallmark of podocyte dysfunction. Furthermore, we illustrate how to analyze the obtained data and outline methods to attribute the findings to podocyte impairment.
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Affiliation(s)
- Nina Sopel
- Department of Medicine 4 - Nephrology and Hypertension, Universitätsklinikum Erlangen, Erlangen, Germany
- Friedrich-Alexander Universiät Erlangen-Nuremberg, Erlangen, Germany
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11
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Zebrafish: A Model to Study and Understand the Diabetic Nephropathy and Other Microvascular Complications of Type 2 Diabetes Mellitus. Vet Sci 2022; 9:vetsci9070312. [PMID: 35878329 PMCID: PMC9323928 DOI: 10.3390/vetsci9070312] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2022] [Revised: 06/14/2022] [Accepted: 06/16/2022] [Indexed: 12/02/2022] Open
Abstract
Simple Summary Diabetes is a chronic metabolic disease characterized by high blood glucose levels (hyperglycemia). Type 2 diabetes mellitus (T2DM) and its complications are a worldwide public health problem, affecting people from all developed and developing countries. Hyperglycemia can cause damage to the vascular system and dysfunction of organs, such as the kidneys, heart, retina of the eyes, and nerves. Diabetic nephropathy (DN) is one of the most severe micro-vascular complications, which can lead to ESRD (end-stage renal disease). Zebrafish are ideal for wide-scale analysis or screening, due to their small size, quick growth, transparent embryos, vast number of offspring, and gene similarity with humans, which combine to make zebrafish an ideal model for diabetes. The readily available tools for gene editing using morpholinos or CRISPR/Cas9, as well as chemical/drug therapy by microinjection or skin absorption, enable zebrafish diabetes mellitus models to be established in a number of ways. In this review, we emphasize the physiological and pathological processes relating to micro-vascular problems in zebrafish, as well as the many experimental zebrafish models used to research DN, and the DN-related outcomes and mechanisms observed in zebrafish. This study specifies the benefits and drawbacks and future perspective of using zebrafish as a disease model. Abstract Diabetes mellitus (DM) is a complicated metabolic illness that has had a worldwide impact and placed an unsustainable load on both developed and developing countries’ health care systems. According to the International Diabetes Federation, roughly 537 million individuals had diabetes in 2021, with type 2 diabetes mellitus accounting for the majority of cases (T2DM). T2DM is a chronic illness defined by insufficient insulin production from pancreatic islet cells. T2DM generates various micro and macrovascular problems, with diabetic nephropathy (DN) being one of the most serious microvascular consequences, and which can lead to end-stage renal disease. The zebrafish (Danio rerio) has set the way for its future as a disease model organism. As numerous essential developmental processes, such as glucose metabolism and reactive metabolite production pathways, have been identified in zebrafish that are comparable to those seen in humans, it is a good model for studying diabetes and its consequences. It also has many benefits over other vertebrate models, including the permeability of its embryos to small compounds, disease-driven therapeutic target selection, in vivo validation, and deconstruction of biological networks. The organism can also be utilized to investigate and understand the genetic abnormalities linked to the onset of diabetes problems. Zebrafish may be used to examine and visualize the growth, morphology, and function of organs under normal physiological and diabetic settings. The zebrafish has become one of the most useful models for studying DN, especially when combined with genetic alterations and/or mutant or transgenic fish lines. The significant advancements of CRISPR and next-generation sequencing technology for disease modelling in zebrafish, as well as developments in molecular and nano technologies, have advanced the understanding of the molecular mechanisms of several human diseases, including DN. In this review, we emphasize the physiological and pathological processes relating to microvascular problems in zebrafish, as well as the many experimental zebrafish models used to research DN, and the DN-related outcomes and mechanisms observed in zebrafish.
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12
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Faraj N, Duinkerken BHP, Carroll EC, Giepmans BNG. Microscopic modulation and analysis of islets of Langerhans in living zebrafish larvae. FEBS Lett 2022; 596:2497-2512. [DOI: 10.1002/1873-3468.14411] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2022] [Revised: 04/22/2022] [Accepted: 05/20/2022] [Indexed: 11/08/2022]
Affiliation(s)
- Noura Faraj
- Department of Biomedical Sciences of Cells and Systems, University of Groningen University Medical Center Groningen Groningen 9713AV The Netherlands
| | - B. H. Peter Duinkerken
- Department of Biomedical Sciences of Cells and Systems, University of Groningen University Medical Center Groningen Groningen 9713AV The Netherlands
| | - Elizabeth C. Carroll
- Department of Imaging Physics Delft University of Technology Delft, 2628 CJ The Netherlands
| | - Ben N. G. Giepmans
- Department of Biomedical Sciences of Cells and Systems, University of Groningen University Medical Center Groningen Groningen 9713AV The Netherlands
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13
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JI W, ZHANG C, SONG C, JI H. Three DPP-IV inhibitory peptides from Antarctic krill protein hydrolysate improve glucose levels in the zebrafish model of diabetes. FOOD SCIENCE AND TECHNOLOGY 2022. [DOI: 10.1590/fst.58920] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Affiliation(s)
- Wei JI
- Guangdong University of Education, China
| | - Chaohua ZHANG
- Guangdong Ocean University, China; Guangdong Ocean University, China
| | - Cai SONG
- Guangdong Ocean University, China
| | - Hongwu JI
- Guangdong Ocean University, China; Guangdong Ocean University, China
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14
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Venezia O, Islam S, Cho C, Timme-Laragy AR, Sant KE. Modulation of PPAR signaling disrupts pancreas development in the zebrafish, Danio rerio. Toxicol Appl Pharmacol 2021; 426:115653. [PMID: 34302850 DOI: 10.1016/j.taap.2021.115653] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2021] [Revised: 07/16/2021] [Accepted: 07/17/2021] [Indexed: 11/15/2022]
Abstract
Peroxisome Proliferator Activated Receptors (PPARs) are transcription factors that regulate processes such as lipid and glucose metabolism. Synthetic PPAR ligands, designed as therapeutics for metabolic disease, provide a tool to assess the relationship between PPAR activity and pancreas development in vivo, an area that remains poorly characterized. Here, we aim to assess the effects of PPAR agonists and antagonists on gene expression, embryonic morphology and pancreas development in transgenic zebrafish embryos. To evaluate developmental perturbations, we assessed gross body and pancreas morphology at 4 days post fertilization (dpf) in response to developmental exposures with PPARα, PPARγ, and PPARβ/δ agonists and antagonists at 0, 0.01, 0.1, 1, and 10 μM concentrations. All ligand exposures, with the exception of the PPARα agonist, resulted in significantly altered fish length and yolk sac area. PPARγ agonist and antagonist had higher incidence of darkened yolk sac and craniofacial deformities, whereas PPARα antagonist had higher incidence of pericardial edema and death. Significantly reduced endocrine pancreas area was observed in both PPARγ ligands and PPARα agonist exposed embryos, some of which also exhibited aberrant endocrine pancreas morphology. Both PPARβ/δ ligands caused reduced exocrine pancreas length and novel aberrant phenotype, and disrupted gene expression of pancreatic targets pdx1, gcga, and try. Lipid staining was performed at 8 dpf and revealed altered lipid accumulation consistent with isoform function. These data indicate chronic exposure to synthetic ligands may induce morphological and pancreatic defects in zebrafish embryos.
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Affiliation(s)
- Olivia Venezia
- Department of Environmental Health Sciences, University of Massachusetts-Amherst, Amherst, MA, United States of America
| | - Sadia Islam
- Department of Environmental Health Sciences, University of Massachusetts-Amherst, Amherst, MA, United States of America
| | - Christine Cho
- School of Public Health, San Diego State University, San Diego, CA, United States of America
| | - Alicia R Timme-Laragy
- Department of Environmental Health Sciences, University of Massachusetts-Amherst, Amherst, MA, United States of America
| | - Karilyn E Sant
- Department of Environmental Health Sciences, University of Massachusetts-Amherst, Amherst, MA, United States of America; School of Public Health, San Diego State University, San Diego, CA, United States of America.
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15
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Yang L, Webb SE, Jin N, Lee HM, Chan TF, Xu G, Chan JC, Miller AL, Ma RC. Investigating the role of dachshund b in the development of the pancreatic islet in zebrafish. J Diabetes Investig 2021; 12:710-727. [PMID: 33449448 PMCID: PMC8089008 DOI: 10.1111/jdi.13503] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/29/2020] [Revised: 12/28/2020] [Accepted: 01/01/2021] [Indexed: 12/29/2022] Open
Abstract
Aims/Introduction β‐Cell dysfunction is a hallmark of type 2 diabetes. In a previous pilot study, we identified an association between genetic variants within the human DACH1 gene and young‐onset type 2 diabetes. Here, we characterized the function of dachb, the only dach homologue to be expressed in the pancreas, in developing zebrafish embryos. Materials and Methods We injected one‐cell stage embryos with a dachb‐morpholino (MO) or with the dachb‐MO and dachb messenger ribonucleic acid, and determined the effect on the development of the pancreatic islet. We also carried out quantitative polymerase chain reaction and ribonucleic acid sequencing on the dachb‐MO group to determine the effect of dachb knockdown on gene expression. Results MO‐mediated dachb knockdown resulted in impaired islet cell development, with a significant decrease in both the β‐cell and islet cell numbers. This islet developmental defect was rescued when embryos were co‐injected with dachb‐MO and dachb messenger ribonucleic acid. Knockdown of dachb was associated with a significant downregulation of the β‐cell specific marker gene, insa, and the somatostatin cell marker, sst2, as well as regulators of pancreas development, ptf1a, neuroD, pax6a and nkx6.1, and the cell cycle gene, insm1a. Furthermore, ribonucleic sequencing analysis showed an upregulation of genes enriched in the forkhead box O and mitogen‐activated protein kinase signaling pathways in the dachb‐MO group, when compared with the control groups. Conclusions Together, our results suggest the possible role of dachb in islet development in zebrafish.
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Affiliation(s)
- Lingling Yang
- Department of Medicine and Therapeutics, The Chinese University of Hong Kong, Prince of Wales Hospital, Shatin, Hong Kong
| | - Sarah E Webb
- Division of Life Science and State Key Laboratory of Molecular Neuroscience, The Hong Kong University of Science and Technology, Clear Water Bay, Hong Kong
| | - Nana Jin
- School of Life Sciences and State Key Laboratory of Agrobiotechnology, The Chinese University of Hong Kong, Shatin, Hong Kong
| | - Heung Man Lee
- Department of Medicine and Therapeutics, The Chinese University of Hong Kong, Prince of Wales Hospital, Shatin, Hong Kong.,Li Ka Shing Institute of Health Sciences, The Chinese University of Hong Kong, Prince of Wales Hospital, Shatin, Hong Kong
| | - Ting Fung Chan
- School of Life Sciences and State Key Laboratory of Agrobiotechnology, The Chinese University of Hong Kong, Shatin, Hong Kong
| | - Gang Xu
- Department of Medicine and Therapeutics, The Chinese University of Hong Kong, Prince of Wales Hospital, Shatin, Hong Kong.,Teaching and Research Division, Hong Kong Baptist University, Kowloon Tong, Hong Kong
| | - Juliana Cn Chan
- Department of Medicine and Therapeutics, The Chinese University of Hong Kong, Prince of Wales Hospital, Shatin, Hong Kong.,Li Ka Shing Institute of Health Sciences, The Chinese University of Hong Kong, Prince of Wales Hospital, Shatin, Hong Kong.,Hong Kong Institute of Diabetes and Obesity, The Chinese University of Hong Kong, Shatin, Hong Kong
| | - Andrew L Miller
- Division of Life Science and State Key Laboratory of Molecular Neuroscience, The Hong Kong University of Science and Technology, Clear Water Bay, Hong Kong
| | - Ronald Cw Ma
- Department of Medicine and Therapeutics, The Chinese University of Hong Kong, Prince of Wales Hospital, Shatin, Hong Kong.,Li Ka Shing Institute of Health Sciences, The Chinese University of Hong Kong, Prince of Wales Hospital, Shatin, Hong Kong.,Hong Kong Institute of Diabetes and Obesity, The Chinese University of Hong Kong, Shatin, Hong Kong
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16
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Gyimah E, Dong X, Xu H, Zhang Z, Mensah JK. Embryonic Exposure to Low Concentrations of Bisphenol A and S Altered Genes Related to Pancreatic β-Cell Development and DNA Methyltransferase in Zebrafish. ARCHIVES OF ENVIRONMENTAL CONTAMINATION AND TOXICOLOGY 2021; 80:450-460. [PMID: 33471154 DOI: 10.1007/s00244-021-00812-8] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/24/2020] [Accepted: 01/02/2021] [Indexed: 06/12/2023]
Abstract
Bisphenol A (BPA) and bisphenol S (BPS) are implicated in the development of metabolic disorders, such diabetes mellitus. However, the epigenetic mechanism underlying the pancreatic β-cell dysregulation for both BPA/BPS needs clarification. This exploratory study was designed to investigate whether embryonic exposure to low BPA/BPS concentrations impair early pancreatic β-cell differentiation as well as DNA methylation in its gene expression profile using an in vivo model, zebrafish. Zebrafish embryos were exposed to 0, 0.01, 0.03, 0.1, 0.3, and 1.0 µM BPA/BPS at 4-h post fertilization (hpf) until 120 hpf. BPA/BPS-induced effects on pancreatic-related genes, insulin gene, and DNA methylation-associated genes were assessed at developmental stages (24-120 hpf), while glucose level was measure at the 120 hpf. The insulin expression levels decreased at 72-120 hpf for 1.0 µM BPA, while 0.32 and 0.24-fold of insulin expression were elicited by 0.3 and 1 µM BPS respectively at 72 hpf. Significant elevation of glucose levels; 16.3% (for 1.0 µM BPA), 7.20% (for 0.3 µM BPS), and 74.09% (for 1.0 µM BPS) higher than the control groups were observed. In addition, pancreatic-related genes pdx-1, foxa2, ptfla, and isl1 were significantly interfered compared with the untreated group. Moreover, the maintenance methylation gene, dnmt1, was monotonically and significantly decreased at early stage of development following BPA exposure but remained constant for BPS treatment relative to the control group. DNMT3a and DNMT3b orthologs were distinctively altered following BPA/BPS embryonic exposure. Our data indicated that embryonic exposure to low concentration of BPA/BPS can impair the normal expressions of pancreatic-associated genes and DNA methylation pattern of selected genes in zebrafish early development.
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Affiliation(s)
- Eric Gyimah
- Institute of Environmental Health and Ecological Security, School of Environment and Safety Engineering, Jiangsu University, Zhenjiang, 212013, China
| | - Xing Dong
- Institute of Environmental Health and Ecological Security, School of Environment and Safety Engineering, Jiangsu University, Zhenjiang, 212013, China
| | - Hai Xu
- Institute of Environmental Health and Ecological Security, School of Environment and Safety Engineering, Jiangsu University, Zhenjiang, 212013, China.
| | - Zhen Zhang
- Institute of Environmental Health and Ecological Security, School of Environment and Safety Engineering, Jiangsu University, Zhenjiang, 212013, China
| | - John Kenneth Mensah
- Department of Chemistry, Kwame Nkrumah University of Science and Technology, Kumasi, Ghana
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17
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Rastogi A, Severance EG, Jacobs HM, Conlin SM, Islam ST, Timme-Laragy AR. Modulating glutathione thiol status alters pancreatic β-cell morphogenesis in the developing zebrafish (Danio rerio) embryo. Redox Biol 2021; 38:101788. [PMID: 33321464 PMCID: PMC7744774 DOI: 10.1016/j.redox.2020.101788] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2020] [Revised: 10/26/2020] [Accepted: 11/03/2020] [Indexed: 01/07/2023] Open
Abstract
Emerging evidence suggests that redox-active chemicals perturb pancreatic islet development. To better understand potential mechanisms for this, we used zebrafish (Danio rerio) embryos to investigate roles of glutathione (GSH; predominant cellular redox buffer) and the transcription factor Nrf2a (Nfe2l2a; zebrafish Nrf2 co-ortholog) in islet morphogenesis. We delineated critical windows of susceptibility to redox disruption of β-cell morphogenesis, interrogating embryos at 24, 48 and 72 h post fertilization (hpf) and visualized Nrf2a expression in the pancreas using whole-mount immunohistochemistry at 96 hpf. Chemical GSH modulation at 48 hpf induced significant islet morphology changes at 96 hpf. Pro-oxidant exposures to tert-butylhydroperoxide (77.6 μM; 10-min at 48 hpf) or tert-butylhydroquinone (1 μM; 48-56 hpf) decreased β-cell cluster area at 96 hpf. Conversely, exposures to antioxidant N-acetylcysteine (bolsters GSH pools; 100 μM; 48-72 hpf) or sulforaphane (activates Nrf2a; 20 μM; 48-72 hpf) significantly increased islet areas. Nrf2a was also stabilized in β-cells: 10-min exposures to 77.6 μM tert-butylhydroperoxide significantly increased Nrf2a protein compared to control islet cells that largely lack stabilized Nrf2a; 10-min exposures to higher (776 μM) tert-butylhydroperoxide concentration stabilized Nrf2a throughout the pancreas. Using biotinylated-GSH to visualize in situ protein glutathionylation, islet cells displayed high protein glutathionylation, indicating oxidized GSH pools. The 10-min high (776 μM) tert-butylhydroperoxide exposure (induced Nrf2a globally) decreased global protein glutathionylation at 96 hpf. Mutant fish expressing inactive Nrf2a were protected against tert-butylhydroperoxide-induced abnormal islet morphology. Our data indicate that disrupted redox homeostasis and Nrf2a stabilization during pancreatic β-cell development impact morphogenesis, with implications for disease states at later life stages. Our work identifies a potential molecular target (Nrf2) that mediates abnormal β-cell morphology in response to redox disruptions. Moreover, our findings imply that developmental exposure to exogenous stressors at distinct windows of susceptibility could diminish the reserve redox capacity of β-cells, rendering them vulnerable to later-life stresses and disease.
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Affiliation(s)
- Archit Rastogi
- Molecular & Cellular Biology Graduate Program, University of Massachusetts, Amherst, MA, 01003, USA
| | - Emily G Severance
- Department of Environmental Health Sciences, School of Public Health and Health Sciences, University of Massachusetts, Amherst, MA, 01003, USA
| | - Haydee M Jacobs
- Department of Environmental Health Sciences, School of Public Health and Health Sciences, University of Massachusetts, Amherst, MA, 01003, USA
| | - Sarah M Conlin
- Department of Environmental Health Sciences, School of Public Health and Health Sciences, University of Massachusetts, Amherst, MA, 01003, USA
| | - Sadia T Islam
- Department of Environmental Health Sciences, School of Public Health and Health Sciences, University of Massachusetts, Amherst, MA, 01003, USA
| | - Alicia R Timme-Laragy
- Molecular & Cellular Biology Graduate Program, University of Massachusetts, Amherst, MA, 01003, USA; Department of Environmental Health Sciences, School of Public Health and Health Sciences, University of Massachusetts, Amherst, MA, 01003, USA.
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18
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Gan Q, Lin C, Lu C, Chang Y, Che Q, Zhang G, Zhu T, Gu Q, Wu Z, Li M, Li D. Staprexanthones, Xanthone-Type Stimulators of Pancreatic β-Cell Proliferation from a Mangrove Endophytic Fungus. JOURNAL OF NATURAL PRODUCTS 2020; 83:2996-3003. [PMID: 32966070 DOI: 10.1021/acs.jnatprod.0c00535] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
This project was focused on the discovery of novel compounds that promote endogenous β-cell regeneration. Screening of extracts identified the fungus Stachybotrys chartarum as a promising candidate. After fermentation and extraction of S. chartarum, we isolated five new prenylated xanthones, namely, staprexanthones A-E (1-5), with staprexanthone A (1) being the first natural xanthone bearing a rare 4,5-dimethyl-1,3-dioxolane moiety. Compounds 1, 2, and 5 significantly increased β-cell numbers in vivo in a zebrafish model. Further analysis revealed that 2 and 5 promoted β-cell mass expansion by increasing proliferation of existing β-cells though promotion of cell-cycle progression at the G1/S transition. These findings indicate that prenylated xanthones are potential new drug leads for antidiabetes therapy by stimulating β-cell regeneration.
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Affiliation(s)
- Qi Gan
- Key Laboratory of Marine Drugs, Chinese Ministry of Education, School of Medicine and Pharmacy, Ocean University of China, Qingdao 266003, People's Republic of China
| | - Chunyu Lin
- School of Pharmaceutical Science, Fujian Provincial Key Laboratory of Innovative Drug Target Research, Xiamen University, Fujian 361102, People's Republic of China
- School of Marine Life Science, Ocean University of China, Qingdao 266003, People's Republic of China
| | - Changjun Lu
- Key Laboratory of Marine Drugs, Chinese Ministry of Education, School of Medicine and Pharmacy, Ocean University of China, Qingdao 266003, People's Republic of China
| | - Yimin Chang
- Key Laboratory of Marine Drugs, Chinese Ministry of Education, School of Medicine and Pharmacy, Ocean University of China, Qingdao 266003, People's Republic of China
| | - Qian Che
- Key Laboratory of Marine Drugs, Chinese Ministry of Education, School of Medicine and Pharmacy, Ocean University of China, Qingdao 266003, People's Republic of China
| | - Guojian Zhang
- Key Laboratory of Marine Drugs, Chinese Ministry of Education, School of Medicine and Pharmacy, Ocean University of China, Qingdao 266003, People's Republic of China
- Laboratory for Marine Drugs and Bioproducts, Pilot National Laboratory for Marine Science and Technology, Qingdao 266237, People's Republic of China
| | - Tianjiao Zhu
- Key Laboratory of Marine Drugs, Chinese Ministry of Education, School of Medicine and Pharmacy, Ocean University of China, Qingdao 266003, People's Republic of China
- Laboratory for Marine Drugs and Bioproducts, Pilot National Laboratory for Marine Science and Technology, Qingdao 266237, People's Republic of China
| | - Qianqun Gu
- Key Laboratory of Marine Drugs, Chinese Ministry of Education, School of Medicine and Pharmacy, Ocean University of China, Qingdao 266003, People's Republic of China
| | - Zhiqiang Wu
- School of Marine Life Science, Ocean University of China, Qingdao 266003, People's Republic of China
| | - Mingyu Li
- School of Pharmaceutical Science, Fujian Provincial Key Laboratory of Innovative Drug Target Research, Xiamen University, Fujian 361102, People's Republic of China
| | - Dehai Li
- Key Laboratory of Marine Drugs, Chinese Ministry of Education, School of Medicine and Pharmacy, Ocean University of China, Qingdao 266003, People's Republic of China
- Laboratory for Marine Drugs and Bioproducts, Pilot National Laboratory for Marine Science and Technology, Qingdao 266237, People's Republic of China
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19
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Chu D, Zhu D, Wu H, Li C, Zhang H, Chen Y, Han X, Liu N, He Y, Li Y, Wei T. Development of the embryonic liver and pancreas of the Chinese softshell turtle Trionyx sinensis. J Histotechnol 2020; 44:2-11. [PMID: 32909928 DOI: 10.1080/01478885.2020.1775013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Abstract
The research on hatching ecology of the Chinese softshell turtle Trionyx sinensis has essential guiding roles to clarify the physiological and ecological mechanism of reptile evolution. The aim of this study is to describe the histological changes, differentiation, and maturation of some functional cells during the genesis and development of the liver and pancreas of the Chinese softshell turtle T. sinensis. Softshell turtle eggs were incubated under artificial conditions and hatched within 41-45 days. Hematoxylin and eosin-stained embryonic pancreas and liver were examined at various time points from 2 to 31 days and compared with that of other reptiles, amphibians, fishes, and birds in the literature. Immunohistochemical assay for glucagon and insulin was performed on paraformaldehyde-fixed embryos to identify functional cells in the pancreas. Pancreatic endocrine cells of T. sinensis have secretory ability at day 26 of embryonic development, and the dispersed pancreatic endocrine cells may be the result of the incomplete pancreatic development.
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Affiliation(s)
- Dechang Chu
- College of Agriculture and Bioengineering, Heze University, Heze, China
| | - Daoyu Zhu
- College of Agriculture and Bioengineering, Heze University, Heze, China
| | - Hongsong Wu
- College of Agriculture and Bioengineering, Heze University, Heze, China
| | - Chunhua Li
- Logistics Management Office, Heze University, Heze, China
| | - Haili Zhang
- College of Agriculture and Bioengineering, Heze University, Heze, China
| | - Yan Chen
- College of Agriculture and Bioengineering, Heze University, Heze, China
| | - Xue Han
- College of Agriculture and Bioengineering, Heze University, Heze, China
| | - Na Liu
- College of Agriculture and Bioengineering, Heze University, Heze, China
| | - Ying He
- College of Agriculture and Bioengineering, Heze University, Heze, China
| | - Yangui Li
- College of Agriculture and Bioengineering, Heze University, Heze, China
| | - Tao Wei
- College of Agriculture and Bioengineering, Heze University, Heze, China
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20
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Oyarbide U, Shah AN, Amaya-Mejia W, Snyderman M, Kell MJ, Allende DS, Calo E, Topczewski J, Corey SJ. Loss of Sbds in zebrafish leads to neutropenia and pancreas and liver atrophy. JCI Insight 2020; 5:134309. [PMID: 32759502 PMCID: PMC7526460 DOI: 10.1172/jci.insight.134309] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2019] [Accepted: 07/29/2020] [Indexed: 01/29/2023] Open
Abstract
Shwachman-Diamond syndrome (SDS) is characterized by exocrine pancreatic insufficiency, neutropenia, and skeletal abnormalities. Biallelic mutations in SBDS, which encodes a ribosome maturation factor, are found in 90% of SDS cases. Sbds–/– mice are embryonic lethal. Using CRISPR/Cas9 editing, we created sbds-deficient zebrafish strains. Sbds protein levels progressively decreased and became undetectable at 10 days postfertilization (dpf). Polysome analysis revealed decreased 80S ribosomes. Homozygous mutant fish developed normally until 15 dpf. Mutant fish subsequently had stunted growth and showed signs of atrophy in pancreas, liver, and intestine. In addition, neutropenia occurred by 5 dpf. Upregulation of tp53 mRNA did not occur until 10 dpf, and inhibition of proliferation correlated with death by 21 dpf. Transcriptome analysis showed tp53 activation through upregulation of genes involved in cell cycle arrest, cdkn1a and ccng1, and apoptosis, puma and mdm2. However, elimination of Tp53 function did not prevent lethality. Because of growth retardation and atrophy of intestinal epithelia, we studied the effects of starvation on WT fish. Starved WT fish showed intestinal atrophy, zymogen granule loss, and tp53 upregulation — similar to the mutant phenotype. In addition, there was reduction in neutral lipid storage and ribosomal protein amount, similar to the mutant phenotype. Thus, loss of Sbds in zebrafish phenocopies much of the human disease and is associated with growth arrest and tissue atrophy, particularly of the gastrointestinal system, at the larval stage. A variety of stress responses, some associated with Tp53, contribute to pathophysiology of SDS. Loss of ribosome maturation factor sbds in the zebrafish phenocopies human Shwachman-Diamond syndrome and is associated with p53 activation, but lethality cannot be rescued by p53 mutation.
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Affiliation(s)
- Usua Oyarbide
- Departments of Pediatrics, Immunology, and Human and Molecular Genetics, Children's Hospital of Richmond and Massey Cancer Center at Virginia Commonwealth University, Richmond, Virginia, USA.,Department of Pediatrics, Stanley Manne Children's Research Institute, Northwestern University School of Medicine, Chicago, Illinois, USA.,Departments of Pediatrics, Cancer Biology, and Translational Hematology and Oncology Research, Cleveland Clinic, Cleveland, Ohio, USA
| | - Arish N Shah
- Department of Biology and David H. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, Massachusetts, USA
| | - Wilmer Amaya-Mejia
- Departments of Pediatrics, Immunology, and Human and Molecular Genetics, Children's Hospital of Richmond and Massey Cancer Center at Virginia Commonwealth University, Richmond, Virginia, USA
| | - Matthew Snyderman
- Departments of Pediatrics, Cancer Biology, and Translational Hematology and Oncology Research, Cleveland Clinic, Cleveland, Ohio, USA
| | - Margaret J Kell
- Department of Pediatrics, Stanley Manne Children's Research Institute, Northwestern University School of Medicine, Chicago, Illinois, USA
| | | | - Eliezer Calo
- Department of Biology and David H. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, Massachusetts, USA
| | - Jacek Topczewski
- Department of Pediatrics, Stanley Manne Children's Research Institute, Northwestern University School of Medicine, Chicago, Illinois, USA.,Department of Biochemistry and Molecular Biology, Medical University of Lublin, Lublin, Poland
| | - Seth J Corey
- Departments of Pediatrics, Immunology, and Human and Molecular Genetics, Children's Hospital of Richmond and Massey Cancer Center at Virginia Commonwealth University, Richmond, Virginia, USA.,Department of Pediatrics, Stanley Manne Children's Research Institute, Northwestern University School of Medicine, Chicago, Illinois, USA.,Departments of Pediatrics, Cancer Biology, and Translational Hematology and Oncology Research, Cleveland Clinic, Cleveland, Ohio, USA
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21
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Singh A, Enjapoori AK, Gibert Y, Dwyer KM. The protective effects of human milk-derived peptides on the pancreatic islet biology. Biol Open 2020; 9:bio049304. [PMID: 32694188 PMCID: PMC7438016 DOI: 10.1242/bio.049304] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2019] [Accepted: 07/09/2020] [Indexed: 12/15/2022] Open
Abstract
Several epidemiological studies support the protective role of breastfeeding in reducing the risk for type 1 diabetes. Human breast milk is the perfect nutrition for infants and contains many complex proteins, lipids and carbohydrates. In this study, we examined the physiological effects of human milk-derived opioid peptides, β-casomorphins (BCM), and compared them with bovine-milk-derived opioid peptides on pancreatic hormone regulation and β-cell regeneration. Exposure of wild-type zebrafish embryos to 50 µg/ml of human BCM-5 and -7 from 3 days post fertilisation until 6 days post fertilisation resulted in an increased insulin domain of expression while exposure to bovine BCM-5 and -7 significantly reduced the insulin domain of expression as analysed by whole-mount in situ hybridisation. These changes may be accounted for by reduced insulin expression or β-cell number and were mitigated by the µ-opioid receptor antagonist, naloxone. The effect of BCM on β-cell regeneration was assessed following ablation of β-cells in Tg (ins: CFP-NTR) zebrafish from 3 days post fertilisation to 4 days post fertilisation, followed by exposure of bovine and human BCM-5 and -7 (50 µg/ml) from 4 days post fertilisation until 7 days post fertilisation. The regenerative capacity of β-cells was not impeded following exposure to human BCM-5 and -7, whereas the capacity of β-cells to regenerate following bovine BCM-5 and -7 exposure was reduced. Our data suggest that human BCM-5 and -7 may promote β-cell development and enable the regeneration of β-cells, while the bovine-milk-derived peptides, BCM-5 and -7, play an opposite role. These data may provide some biological explanation for the protective effect of breastfeeding on the development of type 1 diabetes.
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Affiliation(s)
- Amitoj Singh
- School of Medicine, Faculty of Health, Deakin University, 75 Pigdons Road, Waurn Ponds, Geelong, VIC 3216, Australia
| | - Ashwantha Kumar Enjapoori
- School of Medicine, Faculty of Health, Deakin University, 75 Pigdons Road, Waurn Ponds, Geelong, VIC 3216, Australia
| | - Yann Gibert
- School of Medicine, Faculty of Health, Deakin University, 75 Pigdons Road, Waurn Ponds, Geelong, VIC 3216, Australia
| | - Karen M Dwyer
- School of Medicine, Faculty of Health, Deakin University, 75 Pigdons Road, Waurn Ponds, Geelong, VIC 3216, Australia
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22
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Sant KE, Venezia OL, Sinno PP, Timme-Laragy AR. Perfluorobutanesulfonic Acid Disrupts Pancreatic Organogenesis and Regulation of Lipid Metabolism in the Zebrafish, Danio rerio. Toxicol Sci 2019; 167:258-268. [PMID: 30239974 DOI: 10.1093/toxsci/kfy237] [Citation(s) in RCA: 33] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
Following the phase-out of highly persistent perfluorosulfonates in the United States from non-stick and stain-resistant products in the early 2000s, perfluorobutanesulfonic acid (PFBS) has replaced these compounds as a primary surfactant. Measurements of PFBS in environmental and human samples have been rising in recent years, raising concerns about potential negative health effects. We previously found that embryonic exposures to a related compound, perfluorooctanesulfonic acid (PFOS), decreased pancreas length and insulin-producing islet area in zebrafish embryos (Danio rerio). The objective of this study was to compare the effects of PFBS exposures on pancreatic organogenesis with our previous PFOS findings. Dechorionated zebrafish embryos from two different transgenic fish lines (Tg[insulin:GFP], Tg[ptf1a:GFP]) were exposed to 0 (0.01% DMSO), 16, or 32 µM PFBS daily beginning at 1 day post fertilization (dpf) until 4 and 7 dpf when they were examined using fluorescent microscopy for islet area and morphology, and exocrine pancreas length. PFBS-exposed embryos had significantly increased caudal fin deformities, delayed swim bladder inflation, and impaired yolk utilization. Incidence of fish with significantly stunted growth and truncated exocrine pancreas length was significantly increased, although these two effects occurred independently. Islet morphology revealed an increased incidence of severely hypomorphic islets (areas lower than the 1st percentile of controls) and an elevated occurrence of fragmented islets. RNA-Seq data (4 dpf) also identify disruptions in regulation of lipid homeostasis. Overall, this work demonstrates that PFBS exposure can perturb embryonic development, energy homeostasis, and pancreatic organogenesis.
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Affiliation(s)
- Karilyn E Sant
- Department of Environmental Health Sciences, School of Public Health and Health Sciences, University of Massachusetts, Amherst, Massachusetts 01003.,Division of Environmental Health, School of Public Health, San Diego State University, San Diego, California 92182
| | - Olivia L Venezia
- Department of Environmental Health Sciences, School of Public Health and Health Sciences, University of Massachusetts, Amherst, Massachusetts 01003
| | - Paul P Sinno
- Department of Environmental Health Sciences, School of Public Health and Health Sciences, University of Massachusetts, Amherst, Massachusetts 01003
| | - Alicia R Timme-Laragy
- Department of Environmental Health Sciences, School of Public Health and Health Sciences, University of Massachusetts, Amherst, Massachusetts 01003
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23
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Dai W, Sandoval IT, Cai S, Smith KA, Delacruz RGC, Boyd KA, Mills JJ, Jones DA, Cichewicz RH. Cholinesterase Inhibitory Arisugacins L-Q from a Penicillium sp. Isolate Obtained through a Citizen Science Initiative and Their Activities in a Phenotype-Based Zebrafish Assay. JOURNAL OF NATURAL PRODUCTS 2019; 82:2627-2637. [PMID: 31433188 DOI: 10.1021/acs.jnatprod.9b00563] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Phenotype-based screening of a fungal extract library yielded an active sample from a Penicillium sp. isolate that impaired zebrafish motility. Bioassay-guided purification led to the identification of 14 meroterpenoids including six new metabolites, arisugacins L-Q (4, 5, 8, and 12-14), seven known arisugacins (1-3, 6, 7, 9, and 10), and one known terreulactone (11). Their structures were determined using a combination of NMR and HRESIMS data, evidence secured from theoretical and experimental ECD spectra, and the modified Mosher's method. The purified compounds were tested in zebrafish embryos, as well as in vitro for cholinesterase inhibition activities. Compound 12 produced defects in myotome structure (metameric muscle, which is critical for locomotion) in vivo and showed the most potent and selective acetylcholinesterase inhibitory activity with an IC50 of 191 nM in vitro. The phenotype assay was also used to reveal bioactivities for several previously reported arisugacins, which had failed to show activity in prior cell-based and in vitro testing. This study demonstrates that utilization of the zebrafish phenotype assay is an effective approach for the identification of bioactive extracts, is compatible with the bioassay-guided compound purification strategies, and offers a valuable tool for probing complex natural product sources to detect bioactive small molecules with potential therapeutic or other commercial applications.
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Affiliation(s)
- Wentao Dai
- Natural Products Discovery Group, Institute for Natural Products Applications and Research Technologies, Department of Chemistry & Biochemistry, Stephenson Life Science Research Center , University of Oklahoma , 101 Stephenson Parkway , Norman , Oklahoma 73019 , United States
| | - Imelda T Sandoval
- Functional and Chemical Genomics Program , Oklahoma Medical Research Foundation , 825 NE 13th Street , Oklahoma City , Oklahoma 73104 , United States
| | - Shengxin Cai
- Natural Products Discovery Group, Institute for Natural Products Applications and Research Technologies, Department of Chemistry & Biochemistry, Stephenson Life Science Research Center , University of Oklahoma , 101 Stephenson Parkway , Norman , Oklahoma 73019 , United States
| | - Kaylee A Smith
- Natural Products Discovery Group, Institute for Natural Products Applications and Research Technologies, Department of Chemistry & Biochemistry, Stephenson Life Science Research Center , University of Oklahoma , 101 Stephenson Parkway , Norman , Oklahoma 73019 , United States
| | - Richard Glenn C Delacruz
- Functional and Chemical Genomics Program , Oklahoma Medical Research Foundation , 825 NE 13th Street , Oklahoma City , Oklahoma 73104 , United States
| | - Kevin A Boyd
- Functional and Chemical Genomics Program , Oklahoma Medical Research Foundation , 825 NE 13th Street , Oklahoma City , Oklahoma 73104 , United States
| | - Jessica J Mills
- Functional and Chemical Genomics Program , Oklahoma Medical Research Foundation , 825 NE 13th Street , Oklahoma City , Oklahoma 73104 , United States
| | - David A Jones
- Functional and Chemical Genomics Program , Oklahoma Medical Research Foundation , 825 NE 13th Street , Oklahoma City , Oklahoma 73104 , United States
| | - Robert H Cichewicz
- Natural Products Discovery Group, Institute for Natural Products Applications and Research Technologies, Department of Chemistry & Biochemistry, Stephenson Life Science Research Center , University of Oklahoma , 101 Stephenson Parkway , Norman , Oklahoma 73019 , United States
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24
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Yun Y, Zhang Y, Li G, Chen S, Sang N. Embryonic exposure to oxy-polycyclic aromatic hydrocarbon interfere with pancreatic β-cell development in zebrafish via altering DNA methylation and gene expression. THE SCIENCE OF THE TOTAL ENVIRONMENT 2019; 660:1602-1609. [PMID: 30743951 DOI: 10.1016/j.scitotenv.2018.12.476] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/04/2018] [Revised: 12/26/2018] [Accepted: 12/31/2018] [Indexed: 06/09/2023]
Abstract
Oxygenated polycyclic aromatic hydrocarbons (OPAHs) are a class of anthropogenic, persistent and very toxic PAH contaminant associated with developmental toxicity. Abnormal glucose metabolism disturbs energy balances that impair the early development of vertebrates, but the mechanisms by which maternal OPAH exposure alters glucose homeostasis in offspring are not well understood. Studies have suggested that epigenetic changes, particularly in DNA methylation, provide a memory of plastic developmental responses to the environment, leading to the generation of novel offspring phenotypes. The objective of this study is to test the hypothesis that embryonic exposure to low-dose OPAH can impair early β-cell differentiation in zebrafish (Danio rerio) by altering DNA methylation and gene expression. The zebrafish embryos were exposed to 0, 0.03, 0.1, 0.3, 1 and 3 μM 9‑fluorenone (9-FLO) at 3 h postfertilization (hpf) until 120 hpf to assess pancreatic organogenesis. 9-FLO exposure reduced total body length, eye length and heart rate, decreased insulin generation, interfered with glucose metabolism, and altered the expression of pancreatic organogenesis-related genes pdx-1, foxa2, isl1 and ptf1a. In particular, low-dose embryonic 9-FLO exposure significantly decreased β-cell differentiation marker gene pdx-1 mRNA levels, indicating that pancreatic endocrine is a more sensitive target response to embryonic low-dose OPAH exposure. Additionally, we found that DNA methyltransferases dnmt1 and dnmt3 were elevated and the DNA methylation at promoter regions of pdx-1 was increased at an early stage of development. These data demonstrated that the low-dose OPAH embryonic exposure can impair pancreatic endocrine development by increasing DNA methylation at the promoter regions of pdx-1 that are essential for β-cell differentiation.
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Affiliation(s)
- Yang Yun
- College of Environment and Resource, Research Center of Environment and Health, Shanxi University, Taiyuan, Shanxi 030006, PR China
| | - Yujie Zhang
- College of Environment and Resource, Research Center of Environment and Health, Shanxi University, Taiyuan, Shanxi 030006, PR China
| | - Guangke Li
- College of Environment and Resource, Research Center of Environment and Health, Shanxi University, Taiyuan, Shanxi 030006, PR China
| | - Shaoyu Chen
- Department of Pharmacology and Toxicology, University of Louisville Health Sciences Center, Louisville, KY, USA; University of Louisville Alcohol Research Center, Louisville, KY, USA
| | - Nan Sang
- College of Environment and Resource, Research Center of Environment and Health, Shanxi University, Taiyuan, Shanxi 030006, PR China.
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25
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Zhao J, Zong W, Zhao Y, Gou D, Liang S, Shen J, Wu Y, Zheng X, Wu R, Wang X, Niu F, Wang A, Zhang Y, Xiong JW, Chen L, Liu Y. In vivo imaging of β-cell function reveals glucose-mediated heterogeneity of β-cell functional development. eLife 2019; 8:41540. [PMID: 30694176 PMCID: PMC6395064 DOI: 10.7554/elife.41540] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2018] [Accepted: 01/29/2019] [Indexed: 12/22/2022] Open
Abstract
How pancreatic β-cells acquire function in vivo is a long-standing mystery due to the lack of technology to visualize β-cell function in living animals. Here, we applied a high-resolution two-photon light-sheet microscope for the first in vivo imaging of Ca2+activity of every β-cell in Tg (ins:Rcamp1.07) zebrafish. We reveal that the heterogeneity of β-cell functional development in vivo occurred as two waves propagating from the islet mantle to the core, coordinated by islet vascularization. Increasing amounts of glucose induced functional acquisition and enhancement of β-cells via activating calcineurin/nuclear factor of activated T-cells (NFAT) signaling. Conserved in mammalians, calcineurin/NFAT prompted high-glucose-stimulated insulin secretion of neonatal mouse islets cultured in vitro. However, the reduction in low-glucose-stimulated insulin secretion was dependent on optimal glucose but independent of calcineurin/NFAT. Thus, combination of optimal glucose and calcineurin activation represents a previously unexplored strategy for promoting functional maturation of stem cell-derived β-like cells in vitro. When the amount of sugar in our body rises, specialised cells known as β-cells respond by releasing insulin, a hormone that acts on various organs to keep blood sugar levels within a healthy range. These cells cluster in small ‘islets’ inside our pancreas. If the number of working β-cells declines, diseases such as diabetes may appear and it becomes difficult to regulate the amount of sugar in our bodies. Understanding how β-cells normally develop and mature in the embryo could help us learn how to make new ones in the laboratory. In particular, researchers are interested in studying how different body signals, such as blood sugar levels, turn immature β-cells into fully productive cells. However, in mammals, the pancreas and its islets are buried deep inside the embryo and they cannot be observed easily. Here, Zhao et al. circumvented this problem by doing experiments on zebrafish embryos, which are transparent, grow outside their mother’s body, and have pancreatic islets that are similar to the ones found in mammals. A three-dimensional microscopy technique was used to watch individual β-cells activity over long periods, which revealed that the cells start being able to produce insulin at different times. The β-cells around the edge of each islet were the first to have access to blood sugar signals: they gained their hormone-producing role earlier than the cells in the core of an islet, which only sensed the information later on. Zhao et al. then exposed the zebrafish embryos to different amounts of sugar. This showed that there is an optimal concentration of sugar which helps β-cells develop by kick-starting a cascade of events inside the cell. Further experiments confirmed that the same pathway and optimal sugar concentration exist for mammalian islets grown in the laboratory. These findings may help researchers find better ways of making new β-cells to treat diabetic patients. In the future, using the three-dimensional imaging technique in zebrafish embryos may lead to more discoveries on how the pancreas matures.
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Affiliation(s)
- Jia Zhao
- State Key Laboratory of Membrane Biology, Beijing Key Laboratory of Cardiometabolic Molecular Medicine, Institute of Molecular Medicine, Peking University, Beijing, China
| | - Weijian Zong
- State Key Laboratory of Membrane Biology, Beijing Key Laboratory of Cardiometabolic Molecular Medicine, Institute of Molecular Medicine, Peking University, Beijing, China.,China Department of Cognitive Sciences, Institute of Basic Medical Sciences, Beijing, China
| | - Yiwen Zhao
- State Key Laboratory of Membrane Biology, Beijing Key Laboratory of Cardiometabolic Molecular Medicine, Institute of Molecular Medicine, Peking University, Beijing, China
| | - Dongzhou Gou
- State Key Laboratory of Membrane Biology, Beijing Key Laboratory of Cardiometabolic Molecular Medicine, Institute of Molecular Medicine, Peking University, Beijing, China
| | - Shenghui Liang
- State Key Laboratory of Membrane Biology, Beijing Key Laboratory of Cardiometabolic Molecular Medicine, Institute of Molecular Medicine, Peking University, Beijing, China
| | - Jiayu Shen
- State Key Laboratory of Membrane Biology, Beijing Key Laboratory of Cardiometabolic Molecular Medicine, Institute of Molecular Medicine, Peking University, Beijing, China
| | - Yi Wu
- School of Software and Microelectronics, Peking University, Beijing, China
| | - Xuan Zheng
- State Key Laboratory of Membrane Biology, Beijing Key Laboratory of Cardiometabolic Molecular Medicine, Institute of Molecular Medicine, Peking University, Beijing, China
| | - Runlong Wu
- School of Electronics Engineering and Computer Science, Peking University, Beijing, China
| | - Xu Wang
- State Key Laboratory of Membrane Biology, Beijing Key Laboratory of Cardiometabolic Molecular Medicine, Institute of Molecular Medicine, Peking University, Beijing, China
| | - Fuzeng Niu
- State Key Laboratory of Advanced Optical Communication System and Networks, School of Electronics Engineering and Computer Science, Peking University, Beijing, China
| | - Aimin Wang
- State Key Laboratory of Advanced Optical Communication System and Networks, School of Electronics Engineering and Computer Science, Peking University, Beijing, China
| | - Yunfeng Zhang
- School of Electronics Engineering and Computer Science, Peking University, Beijing, China
| | - Jing-Wei Xiong
- State Key Laboratory of Membrane Biology, Beijing Key Laboratory of Cardiometabolic Molecular Medicine, Institute of Molecular Medicine, Peking University, Beijing, China
| | - Liangyi Chen
- State Key Laboratory of Membrane Biology, Beijing Key Laboratory of Cardiometabolic Molecular Medicine, Institute of Molecular Medicine, Peking University, Beijing, China
| | - Yanmei Liu
- State Key Laboratory of Membrane Biology, Beijing Key Laboratory of Cardiometabolic Molecular Medicine, Institute of Molecular Medicine, Peking University, Beijing, China.,Institute for Brain Research and Rehabilitation (IBRR), Guangdong Key Laboratory of Mental Health and Cognitive Science, South China Normal University, Guangzhou, China
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26
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Hayes AW, Li R, Hoeng J, Iskandar A, Peistch MC, Dourson ML. New approaches to risk assessment of chemical mixtures. TOXICOLOGY RESEARCH AND APPLICATION 2019. [DOI: 10.1177/2397847318820768] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Affiliation(s)
| | - Roman Li
- Swiss Federal Institute of Aquatic Science and Technology (EAWAG), Dübendorf, Switzerland
- Philip Morris International (PMI) Research & Development, Neuchâtel, Switzerland
| | - Julia Hoeng
- Philip Morris International (PMI) Research & Development, Neuchâtel, Switzerland
| | - Anita Iskandar
- Philip Morris International (PMI) Research & Development, Neuchâtel, Switzerland
| | - Manuel C Peistch
- Philip Morris International (PMI) Research & Development, Neuchâtel, Switzerland
| | - Michael L Dourson
- Toxicology Excellence for Risk Assessment (TERA), Cincinnati, OH, USA
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27
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Matsuda H, Mullapudi ST, Yang YHC, Masaki H, Hesselson D, Stainier DYR. Whole-Organism Chemical Screening Identifies Modulators of Pancreatic β-Cell Function. Diabetes 2018; 67:2268-2279. [PMID: 30115653 DOI: 10.2337/db17-1223] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/09/2017] [Accepted: 08/07/2018] [Indexed: 11/13/2022]
Abstract
β-Cell loss and dysfunction play a critical role in the progression of type 1 and type 2 diabetes. Identifying new molecules and/or molecular pathways that improve β-cell function and/or increase β-cell mass should significantly contribute to the development of new therapies for diabetes. Using the zebrafish model, we screened 4,640 small molecules to identify modulators of β-cell function. This in vivo strategy identified 84 stimulators of insulin expression, which simultaneously reduced glucose levels. The insulin promoter activation kinetics for 32 of these stimulators were consistent with a direct mode of action. A subset of insulin stimulators, including the antidiabetic drug pioglitazone, induced the coordinated upregulation of gluconeogenic pck1 expression, suggesting functional response to increased insulin action in peripheral tissues. Notably, Kv1.3 inhibitors increased β-cell mass in larval zebrafish and stimulated β-cell function in adult zebrafish and in the streptozotocin-induced hyperglycemic mouse model. In addition, our data indicate that cytoplasmic Kv1.3 regulates β-cell function. Thus, using whole-organism screening, we have identified new small-molecule modulators of β-cell function and glucose metabolism.
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Affiliation(s)
- Hiroki Matsuda
- Department of Developmental Genetics, Max Planck Institute for Heart and Lung Research, Bad Nauheim, Germany
| | - Sri Teja Mullapudi
- Department of Developmental Genetics, Max Planck Institute for Heart and Lung Research, Bad Nauheim, Germany
| | - Yu Hsuan Carol Yang
- Department of Developmental Genetics, Max Planck Institute for Heart and Lung Research, Bad Nauheim, Germany
| | - Hideki Masaki
- Division of Stem Cell Therapy, The Institute of Medical Science, University of Tokyo, Tokyo, Japan
| | - Daniel Hesselson
- Diabetes and Metabolism Division, Garvan Institute of Medical Research, Sydney, New South Wales, Australia
- St Vincent's Clinical School, UNSW Sydney, Sydney, New South Wales, Australia
| | - Didier Y R Stainier
- Department of Developmental Genetics, Max Planck Institute for Heart and Lung Research, Bad Nauheim, Germany
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28
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BDNF, Brain, and Regeneration: Insights from Zebrafish. Int J Mol Sci 2018; 19:ijms19103155. [PMID: 30322169 PMCID: PMC6214035 DOI: 10.3390/ijms19103155] [Citation(s) in RCA: 50] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2018] [Revised: 10/10/2018] [Accepted: 10/11/2018] [Indexed: 12/17/2022] Open
Abstract
Zebrafish (Danio rerio) is a teleost fish widely accepted as a model organism for neuroscientific studies. The adults show common basic vertebrate brain structures, together with similar key neuroanatomical and neurochemical pathways of relevance to human diseases. However, the brain of adult zebrafish possesses, differently from mammals, intense neurogenic activity, which can be correlated with high regenerative properties. Brain derived neurotrophic factor (BDNF), a member of the neurotrophin family, has multiple roles in the brain, due also to the existence of several biologically active isoforms, that interact with different types of receptors. BDNF is well conserved in the vertebrate evolution, with the primary amino acid sequences of zebrafish and human BDNF being 91% identical. Here, we review the available literature regarding BDNF in the vertebrate brain and the potential involvement of BDNF in telencephalic regeneration after injury, with particular emphasis to the zebrafish. Finally, we highlight the potential of the zebrafish brain as a valuable model to add new insights on future BDNF studies.
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29
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Demin KA, Meshalkina DA, Kysil EV, Antonova KA, Volgin AD, Yakovlev OA, Alekseeva PA, Firuleva MM, Lakstygal AM, de Abreu MS, Barcellos LJG, Bao W, Friend AJ, Amstislavskaya TG, Rosemberg DB, Musienko PE, Song C, Kalueff AV. Zebrafish models relevant to studying central opioid and endocannabinoid systems. Prog Neuropsychopharmacol Biol Psychiatry 2018; 86:301-312. [PMID: 29604314 DOI: 10.1016/j.pnpbp.2018.03.024] [Citation(s) in RCA: 41] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/23/2018] [Revised: 03/26/2018] [Accepted: 03/26/2018] [Indexed: 12/19/2022]
Abstract
The endocannabinoid and opioid systems are two interplaying neurotransmitter systems that modulate drug abuse, anxiety, pain, cognition, neurogenesis and immune activity. Although they are involved in such critical functions, our understanding of endocannabinoid and opioid physiology remains limited, necessitating further studies, novel models and new model organisms in this field. Zebrafish (Danio rerio) is rapidly emerging as one of the most effective translational models in neuroscience and biological psychiatry. Due to their high physiological and genetic homology to humans, zebrafish may be effectively used to study the endocannabinoid and opioid systems. Here, we discuss current models used to target the endocannabinoid and opioid systems in zebrafish, and their potential use in future translational research and high-throughput drug screening. Emphasizing the high degree of conservation of the endocannabinoid and opioid systems in zebrafish and mammals, we suggest zebrafish as an excellent model organism to study these systems and to search for the new drugs and therapies targeting their evolutionarily conserved mechanisms.
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Affiliation(s)
- Konstantin A Demin
- Institute of Translational Biomedicine, St. Petersburg State University, St. Petersburg, Russia; Institute of Experimental Medicine, Almazov National Medical Research Centre, St. Petersburg, Russia; Laboratory of Preclinical Bioscreening, Russian Research Center for Radiology and Surgical Technologies, Ministry of Health, St. Petersburg, Russia
| | - Darya A Meshalkina
- Institute of Translational Biomedicine, St. Petersburg State University, St. Petersburg, Russia; Institute of Experimental Medicine, Almazov National Medical Research Centre, St. Petersburg, Russia; Laboratory of Preclinical Bioscreening, Russian Research Center for Radiology and Surgical Technologies, Ministry of Health, St. Petersburg, Russia
| | - Elana V Kysil
- Institute of Translational Biomedicine, St. Petersburg State University, St. Petersburg, Russia
| | - Kristina A Antonova
- Institute of Translational Biomedicine, St. Petersburg State University, St. Petersburg, Russia
| | - Andrey D Volgin
- Institute of Translational Biomedicine, St. Petersburg State University, St. Petersburg, Russia; Medical Military Academy, St. Petersburg, Russia
| | - Oleg A Yakovlev
- Institute of Translational Biomedicine, St. Petersburg State University, St. Petersburg, Russia; Medical Military Academy, St. Petersburg, Russia
| | - Polina A Alekseeva
- Institute of Experimental Medicine, Almazov National Medical Research Centre, St. Petersburg, Russia
| | - Maria M Firuleva
- Institute of Translational Biomedicine, St. Petersburg State University, St. Petersburg, Russia
| | - Anton M Lakstygal
- Institute of Translational Biomedicine, St. Petersburg State University, St. Petersburg, Russia
| | - Murilo S de Abreu
- Bioscience Institute, University of Passo Fundo (UPF), Passo Fundo, RS, Brazil; Graduate Program in Pharmacology, Federal University of Santa Maria, Santa Maria, Brazil
| | - Leonardo J G Barcellos
- Graduate Program in Pharmacology, Federal University of Santa Maria, Santa Maria, Brazil; Graduate Programs in Environmental Sciences, and Bio-Experimentation, University of Passo Fundo (UPF), Passo Fundo, Brazil; The International Zebrafish Neuroscience Research Consortium (ZNRC), Slidell, LA, USA
| | - Wandong Bao
- School of Pharmacy, Southwest University, Chongqing, China
| | - Ashton J Friend
- The International Zebrafish Neuroscience Research Consortium (ZNRC), Slidell, LA, USA; Tulane University School of Science and Engineering, New Orleans, LA, USA
| | - Tamara G Amstislavskaya
- The International Zebrafish Neuroscience Research Consortium (ZNRC), Slidell, LA, USA; Laboratory of Translational Biopsychiatry, Research Institute of Physiology and Basic Medicine, Novosibirsk, Russia; Neuroscience Department, Novosibirsk State University, Novosibirsk, Russia
| | - Denis B Rosemberg
- The International Zebrafish Neuroscience Research Consortium (ZNRC), Slidell, LA, USA; Department of Biochemistry and Molecular Biology, Federal University of Santa Maria, Santa Maria, Brazil
| | - Pavel E Musienko
- Laboratory of Neuroprosthetics, Institute of Translational Biomedicine, St. Petersburg State University, St. Petersburg, Russia; Laboratory of Motor Physiology, Pavlov Institute of Physiology RAS, St. Petersburg, Russia; Laboratory of Neurophysiology and Experimental Neurorehabilitation, St. Petersburg State Research Institute of Phthysiopulmonology, Ministry of Health, St. Petersburg, Russia; Russian Research Center of Radiology and Surgical Technologies, Ministry of Health, St. Petersburg, Russia
| | - Cai Song
- Research Institute for Marine Drugs and Nutrition, Guangdong Ocean University, Zhanjiang, China; Marine Medicine Research and Development Center, Shenzhen Institute of Guangdong Ocean University, Shenzhen, China
| | - Allan V Kalueff
- School of Pharmacy, Southwest University, Chongqing, China; Laboratory of Translational Biopsychiatry, Research Institute of Physiology and Basic Medicine, Novosibirsk, Russia; Neuroscience Department, Novosibirsk State University, Novosibirsk, Russia; ZENEREI Research Center, Slidell, LA, USA; Russian Research Center of Radiology and Surgical Technologies, Ministry of Health, St. Petersburg, Russia; Ural Federal University, Ekaterinburg, Russia; Aquatic Laboratory, Institute of Experimental Medicine, Almazov National Medical Research Centre, St. Petersburg, Russia.
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30
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Zang L, Maddison LA, Chen W. Zebrafish as a Model for Obesity and Diabetes. Front Cell Dev Biol 2018; 6:91. [PMID: 30177968 PMCID: PMC6110173 DOI: 10.3389/fcell.2018.00091] [Citation(s) in RCA: 142] [Impact Index Per Article: 23.7] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2018] [Accepted: 07/25/2018] [Indexed: 12/13/2022] Open
Abstract
Obesity and diabetes now considered global epidemics. The prevalence rates of diabetes are increasing in parallel with the rates of obesity and the strong connection between these two diseases has been coined as “diabesity.” The health risks of overweight or obesity include Type 2 diabetes mellitus (T2DM), coronary heart disease and cancer of numerous organs. Both obesity and diabetes are complex diseases that involve the interaction of genetics and environmental factors. The underlying pathogenesis of obesity and diabetes are not well understood and further research is needed for pharmacological and surgical management. Consequently, the use of animal models of obesity and/or diabetes is important for both improving the understanding of these diseases and to identify and develop effective treatments. Zebrafish is an attractive model system for studying metabolic diseases because of the functional conservation in lipid metabolism, adipose biology, pancreas structure, and glucose homeostasis. It is also suited for identification of novel targets associated with the risk and treatment of obesity and diabetes in humans. In this review, we highlight studies using zebrafish to model metabolic diseases, and discuss the advantages and disadvantages of studying pathologies associated with obesity and diabetes in zebrafish.
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Affiliation(s)
- Liqing Zang
- Department of Molecular Physiology and Biophysics, Vanderbilt University School of Medicine, Nashville, TN, United States.,Graduate School of Regional Innovation Studies, Mie University, Tsu, Japan
| | - Lisette A Maddison
- Center for Reproductive Biology, Washington State University, Pullman, WA, United States
| | - Wenbiao Chen
- Department of Molecular Physiology and Biophysics, Vanderbilt University School of Medicine, Nashville, TN, United States
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31
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Matsuda H. Zebrafish as a model for studying functional pancreatic β cells development and regeneration. Dev Growth Differ 2018; 60:393-399. [DOI: 10.1111/dgd.12565] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2018] [Revised: 07/06/2018] [Accepted: 07/06/2018] [Indexed: 02/06/2023]
Affiliation(s)
- Hiroki Matsuda
- Department of Developmental Biology and Neurosciences; Graduate School of Life Sciences; Tohoku University; Sendai Japan
- Department of Biomedical Sciences; College of Life Sciences; Ritsumeikan University; Kusatsu Japan
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32
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Giorgio V, Schiavone M, Galber C, Carini M, Da Ros T, Petronilli V, Argenton F, Carelli V, Acosta Lopez MJ, Salviati L, Prato M, Bernardi P. The idebenone metabolite QS10 restores electron transfer in complex I and coenzyme Q defects. BIOCHIMICA ET BIOPHYSICA ACTA-BIOENERGETICS 2018; 1859:901-908. [PMID: 29694828 DOI: 10.1016/j.bbabio.2018.04.006] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 01/30/2018] [Revised: 04/03/2018] [Accepted: 04/18/2018] [Indexed: 12/11/2022]
Abstract
Idebenone is a hydrophilic short-chain coenzyme (Co) Q analogue, which has been used as a potential bypass of defective complex I in both Leber Hereditary Optic Neuropathy and OPA1-dependent Dominant Optic Atrophy. Based on its potential antioxidant effects, it has also been tested in degenerative disorders such as Friedreich's ataxia, Huntington's and Alzheimer's diseases. Idebenone is rapidly modified but the biological effects of its metabolites have been characterized only partially. Here we have studied the effects of quinones generated during in vivo metabolism of idebenone with specific emphasis on 6-(9-carboxynonyl)-2,3-dimethoxy-5-methyl-1,4-benzoquinone (QS10). QS10 partially restored respiration in cells deficient of complex I or of CoQ without inducing the mitochondrial permeability transition, a detrimental effect of idebenone that may offset its potential benefits [Giorgio et al. (2012) Biochim. Biophys. Acta 1817: 363-369]. Remarkably, respiration was largely rotenone-insensitive in complex I deficient cells and rotenone-sensitive in CoQ deficient cells. These findings indicate that, like idebenone, QS10 can provide a bypass to defective complex I; and that, unlike idebenone, QS10 can partially replace endogenous CoQ. In zebrafish (Danio rerio) treated with rotenone, QS10 was more effective than idebenone in allowing partial recovery of respiration (to 40% and 20% of the basal respiration of untreated embryos, respectively) and allowing zebrafish survival (80% surviving embryos at 60 h post-fertilization, a time point at which all rotenone-treated embryos otherwise died). We conclude that QS10 is potentially more active than idebenone in the treatment of diseases caused by complex I defects, and that it could also be used in CoQ deficiencies of genetic and acquired origin.
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Affiliation(s)
- Valentina Giorgio
- CNR Neuroscience Institute and Department of Biomedical Sciences, University of Padova, Padova, Italy
| | - Marco Schiavone
- CNR Neuroscience Institute and Department of Biomedical Sciences, University of Padova, Padova, Italy
| | - Chiara Galber
- CNR Neuroscience Institute and Department of Biomedical Sciences, University of Padova, Padova, Italy
| | - Marco Carini
- INSTM Trieste Unit, Department of Chemical and Pharmaceutical Sciences, University of Trieste, Trieste, Italy
| | - Tatiana Da Ros
- INSTM Trieste Unit, Department of Chemical and Pharmaceutical Sciences, University of Trieste, Trieste, Italy
| | - Valeria Petronilli
- CNR Neuroscience Institute and Department of Biomedical Sciences, University of Padova, Padova, Italy
| | | | - Valerio Carelli
- IRCCS Institute of Neurological Sciences of Bologna, Bellaria Hospital, Bologna, Italy; Department of Biomedical and Neuromotor Sciences (DIBINEM), University of Bologna, Bologna, Italy
| | - Manuel J Acosta Lopez
- Clinical Genetics Unit, Department of Woman and Child Health, University of Padova, IRP Città della Speranza, Padova, Italy
| | - Leonardo Salviati
- Clinical Genetics Unit, Department of Woman and Child Health, University of Padova, IRP Città della Speranza, Padova, Italy
| | - Maurizio Prato
- INSTM Trieste Unit, Department of Chemical and Pharmaceutical Sciences, University of Trieste, Trieste, Italy; Carbon Nanobiotechnology Laboratory CIC biomaGUNE, Donostia-San Sebastián, Spain; Basque Fdn Sci, Ikerbasque, Bilbao, Spain
| | - Paolo Bernardi
- CNR Neuroscience Institute and Department of Biomedical Sciences, University of Padova, Padova, Italy.
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Brown SE, Sant KE, Fleischman SM, Venezia O, Roy MA, Zhao L, Timme-Laragy AR. Pancreatic beta cells are a sensitive target of embryonic exposure to butylparaben in zebrafish (Danio rerio). Birth Defects Res 2018. [PMID: 29516647 DOI: 10.1002/bdr2.1215] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
BACKGROUND Butylparaben (butyl p-hydroxybenzoic acid) is a common cosmetic and pharmaceutical preservative reported to induce oxidative stress and endocrine disruption. Embryonic development is sensitive to oxidative stress, with redox potentials playing critical roles in progenitor cell fate decisions. Because pancreatic beta cells have been reported to have low antioxidant gene expression, they may be sensitive targets of oxidative stress. We tested the hypotheses that butylparaben causes oxidative stress in the developing embryo, and that pancreatic beta cells are a sensitive target of butylparaben embryotoxicity. METHODS Transgenic insulin:GFP zebrafish embryos (Danio rerio) were treated daily with 0, 250, 500, 1,000, and 3,000 nM butylparaben. Pancreatic islet and whole embryo development were examined though 7 days postfertilization, and gene expression was measured by quantitative real-time PCR. Glutathione (GSH) and cysteine redox content were measured at 28 hr postfertilization using HPLC. RESULTS Butylparaben exposure caused intestinal effusion, pericardial edema, and accelerated yolk utilization. At 250 nM, beta cell area increased by as much as 55%, and increased incidence of two aberrant morphologies were observed-fragmentation of the islet cluster and ectopic beta cells. Butylparaben concentrations of 500 and 1,000 nM increased GSH by 10 and 40%, respectively. Butylparaben exposure downregulated transcription factor pdx1, as well as genes involved in GSH synthesis, while upregulating GSH-disulfide reductase (gsr). CONCLUSIONS The endocrine pancreas is a sensitive target of embryonic exposure to butylparaben, which also causes developmental deformities and perturbs redox conditions in the embryo.
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Affiliation(s)
- Sarah E Brown
- Department of Environmental Health Sciences, University of Massachusetts Amherst, 686 N. Pleasant St, Amherst, Massachusetts 01003-9303
| | - Karilyn E Sant
- Department of Environmental Health Sciences, University of Massachusetts Amherst, 686 N. Pleasant St, Amherst, Massachusetts 01003-9303
| | - Shana M Fleischman
- Department of Environmental Health Sciences, University of Massachusetts Amherst, 686 N. Pleasant St, Amherst, Massachusetts 01003-9303
| | - Olivia Venezia
- Department of Environmental Health Sciences, University of Massachusetts Amherst, 686 N. Pleasant St, Amherst, Massachusetts 01003-9303
| | - Monika A Roy
- Department of Environmental Health Sciences, University of Massachusetts Amherst, 686 N. Pleasant St, Amherst, Massachusetts 01003-9303.,Biotechnology Training Program, University of Massachusetts Amherst, Massachusetts 01003
| | - Ling Zhao
- Department of Nutrition, University of Tennessee Knoxville, 1215 W. Cumberland Ave., 229 Jessie Harris Building, Knoxville, Tennessee 37996-1920
| | - Alicia R Timme-Laragy
- Department of Environmental Health Sciences, University of Massachusetts Amherst, 686 N. Pleasant St, Amherst, Massachusetts 01003-9303
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Jacobs HM, Sant KE, Basnet A, Williams LM, Moss JB, Timme-Laragy AR. Embryonic exposure to Mono(2-ethylhexyl) phthalate (MEHP) disrupts pancreatic organogenesis in zebrafish (Danio rerio). CHEMOSPHERE 2018; 195:498-507. [PMID: 29277029 PMCID: PMC5788038 DOI: 10.1016/j.chemosphere.2017.12.094] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/20/2017] [Revised: 12/14/2017] [Accepted: 12/15/2017] [Indexed: 05/22/2023]
Abstract
Mono(2-ethylhexyl) phthalate (MEHP) is the bioactive metabolite of di(2-ethylhexyl) phthalate, a plasticizing agent and persistent environmental contaminant associated with obesity, developmental abnormalities, and oxidative stress. Nrf2 (Nfe2l2) is a transcription factor that regulates cytoprotective genes as part of the adaptive antioxidant response. We previously identified the pancreas as a sensitive target of oxidative stress during embryonic development. The goals of this study were to 1) characterize the effects of MEHP exposure on pancreatic development, and 2) determine whether oxidative stress contributes to MEHP embryotoxicity. Zebrafish (Danio rerio) embryos from AB wildtype and Tg(ins:GFP;nrf2afh318/fh318) were exposed to 0 or 200 μg/L MEHP at 3 h post fertilization (hpf) through 168 hpf to assess pancreatic organogenesis. MEHP exposure significantly decreased β-cell area at all timepoints (48, 72, 96, 168 hpf), but Nrf2a did not significantly protect against islet hypomorphism. Tg(gcga:GFP) embryos exposed to MEHP showed a decrease in α-cell area in the islet across the same timepoints. Tg(ptf1a:GFP) embryos were assessed at 80 and 168 hpf for exocrine pancreas length. MEHP exposure decreased growth of the exocrine pancreas. Expression of pancreas genes insa, sst2 and ptf1a was significantly reduced by MEHP exposure compared to controls. Glutathione (GSH) concentrations and redox potentials were quantified at 72 hpf by HPLC, but no significant changes were observed. However, expression of the GSH-related genes gstp1 and gsr were significantly altered by MEHP exposure. These data indicate that the developing pancreas is a sensitive target tissue of embryonic exposure to MEHP.
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Affiliation(s)
- Haydee M Jacobs
- Department of Environmental Health Sciences, School of Public Health and Health Sciences, University of Massachusetts Amherst, MA 01003, USA
| | - Karilyn E Sant
- Department of Environmental Health Sciences, School of Public Health and Health Sciences, University of Massachusetts Amherst, MA 01003, USA
| | - Aviraj Basnet
- Department of Environmental Health Sciences, School of Public Health and Health Sciences, University of Massachusetts Amherst, MA 01003, USA
| | | | - Jennifer B Moss
- Department of Medicine, Division of Endocrinology, Metabolism, and Nutrition, Duke University Medical Center, Durham, NC 27701, USA
| | - Alicia R Timme-Laragy
- Department of Environmental Health Sciences, School of Public Health and Health Sciences, University of Massachusetts Amherst, MA 01003, USA.
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Matsuda H, Mullapudi ST, Zhang Y, Hesselson D, Stainier DYR. Thyroid Hormone Coordinates Pancreatic Islet Maturation During the Zebrafish Larval-to-Juvenile Transition to Maintain Glucose Homeostasis. Diabetes 2017; 66:2623-2635. [PMID: 28698262 DOI: 10.2337/db16-1476] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/01/2016] [Accepted: 06/24/2017] [Indexed: 11/13/2022]
Abstract
Thyroid hormone (TH) signaling promotes tissue maturation and adult organ formation. Developmental transitions alter an organism's metabolic requirements, and it remains unclear how development and metabolic demands are coordinated. We used the zebrafish as a model to test whether and how TH signaling affects pancreatic islet maturation, and consequently glucose homeostasis, during the larval to juvenile transition. We found that exogenous TH precociously activates the β-cell differentiation genes pax6b and mnx1 while downregulating arxa, a master regulator of α-cell development and function. Together, these effects induced hypoglycemia, at least in part by increasing insulin and decreasing glucagon expression. We visualized TH target tissues using a novel TH-responsive reporter line and found that both α- and β-cells become targets of endogenous TH signaling during the larval-to-juvenile transition. Importantly, endogenous TH is required during this transition for the functional maturation of α- and β-cells in order to maintain glucose homeostasis. Thus, our study sheds new light on the regulation of glucose metabolism during major developmental transitions.
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Affiliation(s)
- Hiroki Matsuda
- Department of Developmental Genetics, Max Planck Institute for Heart and Lung Research, Bad Nauheim, Germany
| | - Sri Teja Mullapudi
- Department of Developmental Genetics, Max Planck Institute for Heart and Lung Research, Bad Nauheim, Germany
| | - Yuxi Zhang
- Diabetes and Metabolism Division, Garvan Institute of Medical Research, Sydney, Australia
| | - Daniel Hesselson
- Diabetes and Metabolism Division, Garvan Institute of Medical Research, Sydney, Australia
- St. Vincent's Clinical School, University of New South Wales, Sydney, Australia
| | - Didier Y R Stainier
- Department of Developmental Genetics, Max Planck Institute for Heart and Lung Research, Bad Nauheim, Germany
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36
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Facchinello N, Tarifeño-Saldivia E, Grisan E, Schiavone M, Peron M, Mongera A, Ek O, Schmitner N, Meyer D, Peers B, Tiso N, Argenton F. Tcf7l2 plays pleiotropic roles in the control of glucose homeostasis, pancreas morphology, vascularization and regeneration. Sci Rep 2017; 7:9605. [PMID: 28851992 PMCID: PMC5575064 DOI: 10.1038/s41598-017-09867-x] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2017] [Accepted: 07/06/2017] [Indexed: 11/10/2022] Open
Abstract
Type 2 diabetes (T2D) is a disease characterized by impaired insulin secretion. The Wnt signaling transcription factor Tcf7l2 is to date the T2D-associated gene with the largest effect on disease susceptibility. However, the mechanisms by which TCF7L2 variants affect insulin release from β-cells are not yet fully understood. By taking advantage of a tcf7l2 zebrafish mutant line, we first show that these animals are characterized by hyperglycemia and impaired islet development. Moreover, we demonstrate that the zebrafish tcf7l2 gene is highly expressed in the exocrine pancreas, suggesting potential bystander effects on β-cell growth, differentiation and regeneration. Finally, we describe a peculiar vascular phenotype in tcf7l2 mutant larvae, characterized by significant reduction in the average number and diameter of pancreatic islet capillaries. Overall, the zebrafish Tcf7l2 mutant, characterized by hyperglycemia, pancreatic and vascular defects, and reduced regeneration proves to be a suitable model to study the mechanism of action and the pleiotropic effects of Tcf7l2, the most relevant T2D GWAS hit in human populations.
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Affiliation(s)
| | - Estefania Tarifeño-Saldivia
- Laboratory of Zebrafish Development and Disease Models, GIGA-R, University of Liege, B-4000, Sart Tilman, Belgium
| | - Enrico Grisan
- Department of Information Engineering, University of Padova, I-35131, Padova, Italy
| | - Marco Schiavone
- Department of Biology, University of Padova, I-35131, Padova, Italy
| | - Margherita Peron
- Department of Biology, University of Padova, I-35131, Padova, Italy
| | | | - Olivier Ek
- Department of Biology, University of Padova, I-35131, Padova, Italy
| | - Nicole Schmitner
- Institute of Molecular Biology, CMBI, Leopold-Franzens-University Innsbruck, A-6020, Innsbruck, Austria
| | - Dirk Meyer
- Institute of Molecular Biology, CMBI, Leopold-Franzens-University Innsbruck, A-6020, Innsbruck, Austria
| | - Bernard Peers
- Laboratory of Zebrafish Development and Disease Models, GIGA-R, University of Liege, B-4000, Sart Tilman, Belgium
| | - Natascia Tiso
- Department of Biology, University of Padova, I-35131, Padova, Italy.
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37
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Zang L, Shimada Y, Nishimura N. Development of a Novel Zebrafish Model for Type 2 Diabetes Mellitus. Sci Rep 2017; 7:1461. [PMID: 28469250 PMCID: PMC5431185 DOI: 10.1038/s41598-017-01432-w] [Citation(s) in RCA: 91] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2016] [Accepted: 03/30/2017] [Indexed: 02/02/2023] Open
Abstract
Obesity is a major cause of type 2 diabetes mellitus (T2DM) in mammals. We have previously established a zebrafish model of diet-induced obesity (DIO zebrafish) by overfeeding Artemia. Here we created DIO zebrafish using a different method to induce T2DM. Zebrafish were overfed a commercially available fish food using an automated feeding system. We monitored the fasting blood glucose levels in the normal-fed group (one feed/day) and overfed group (six feeds/day) over an 8-week period. The fasting blood glucose level was significantly increased in DIO zebrafish compared with that of normal-fed zebrafish. Intraperitoneal and oral glucose tolerance tests showed impaired glucose tolerance by overfeeding. Insulin production, which was determined indirectly by measuring the EGFP signal strength in overfed Tg(−1.0ins:EGFP)sc1 zebrafish, was increased in DIO zebrafish. The anti-diabetic drugs metformin and glimepiride ameliorated hyperglycaemia in the overfed group, suggesting that this zebrafish can be used as a model of human T2DM. Finally, we conducted RNA deep sequencing and found that the gene expression profiling of liver-pancreas revealed pathways common to human T2DM. In summary, we developed a zebrafish model of T2DM that shows promise as a platform for mechanistic and therapeutic studies of diet-induced glucose intolerance and insulin resistance.
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Affiliation(s)
- Liqing Zang
- Graduate School of Regional Innovation Studies, Mie University, Tsu, Mie, Japan.
| | - Yasuhito Shimada
- Department of Integrative Pharmacology, Mie University Graduate School of Medicine, Tsu, Mie, Japan.,Department of Bioinformatics, Mie University Life Science Research Center, Tsu, Mie, Japan
| | - Norihiro Nishimura
- Graduate School of Regional Innovation Studies, Mie University, Tsu, Mie, Japan
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38
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Kowalska M, Hermyt M, Rupik W. Three-dimensional reconstruction of the embryonic pancreas in the grass snake Natrix natrix L. (Lepidosauria, Serpentes) based on histological studies. ZOOLOGY 2017; 121:91-110. [DOI: 10.1016/j.zool.2016.11.001] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2016] [Revised: 09/27/2016] [Accepted: 11/10/2016] [Indexed: 01/08/2023]
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Sant KE, Jacobs HM, Borofski KA, Moss JB, Timme-Laragy AR. Embryonic exposures to perfluorooctanesulfonic acid (PFOS) disrupt pancreatic organogenesis in the zebrafish, Danio rerio. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2017; 220:807-817. [PMID: 27810111 PMCID: PMC5140685 DOI: 10.1016/j.envpol.2016.10.057] [Citation(s) in RCA: 55] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/17/2016] [Revised: 09/23/2016] [Accepted: 10/19/2016] [Indexed: 05/18/2023]
Abstract
Perfluorooctanesulfonic acid (PFOS) is a ubiquitous environmental contaminant, previously utilized as a non-stick application for consumer products and firefighting foam. It can cross the placenta, and has been repeatedly associated with increased risk for diabetes in epidemiological studies. Here, we sought to establish the hazard posed by embryonic PFOS exposures on the developing pancreas in a model vertebrate embryo, and develop criteria for an adverse outcome pathway (AOP) framework to study the developmental origins of metabolic dysfunction. Zebrafish (Danio rerio) embryos were exposed to 16, 32, or 64 μM PFOS beginning at the mid-blastula transition. We assessed embryo health, size, and islet morphology in Tg(insulin-GFP) embryos at 48, 96 and 168 hpf, and pancreas length in Tg(ptf1a-GFP) embryos at 96 and 168 hpf. QPCR was used to measure gene expression of endocrine and exocrine hormones, digestive peptides, and transcription factors to determine whether these could be used as a predictive measure in an AOP. Embryos exposed to PFOS showed anomalous islet morphology and decreased islet size and pancreas length in a U-shaped dose-response curve, which resemble congenital defects associated with increased risk for diabetes in humans. Expression of genes encoding islet hormones and exocrine digestive peptides followed a similar pattern, as did total larval growth. Our results demonstrate that embryonic PFOS exposures can disrupt pancreatic organogenesis in ways that mimic human congenital defects known to predispose individuals to diabetes; however, future study of the association between these defects and metabolic dysfunction are needed to establish an improved AOP framework.
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Affiliation(s)
- Karilyn E Sant
- Department of Environmental Health Sciences, University of Massachusetts Amherst, Amherst, MA 01003, United States
| | - Haydee M Jacobs
- Department of Environmental Health Sciences, University of Massachusetts Amherst, Amherst, MA 01003, United States
| | - Katrina A Borofski
- Department of Environmental Health Sciences, University of Massachusetts Amherst, Amherst, MA 01003, United States
| | - Jennifer B Moss
- Duke Molecular Physiology Institute, Endocrine Division, Duke University Medical Center, Durham, NC 27701, United States
| | - Alicia R Timme-Laragy
- Department of Environmental Health Sciences, University of Massachusetts Amherst, Amherst, MA 01003, United States.
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40
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Abstract
The zebrafish pancreas shares its basic organization and cell types with the mammalian pancreas. In addition, the developmental pathways that lead to the establishment of the pancreatic islets of Langherhans are generally conserved from fish to mammals. Zebrafish provides a powerful tool to probe the mechanisms controlling establishment of the pancreatic endocrine cell types from early embryonic progenitor cells, as well as the regeneration of endocrine cells after damage. This knowledge is, in turn, applicable to refining protocols to generate renewable sources of human pancreatic islet cells that are critical for regulation of blood sugar levels. Here, we review how previous and ongoing studies in zebrafish and beyond are influencing the understanding of molecular mechanisms underlying various forms of diabetes and efforts to develop cell-based approaches to cure this increasingly widespread disease.
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41
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Sant KE, Jacobs HM, Xu J, Borofski KA, Moss LG, Moss JB, Timme-Laragy AR. Assessment of Toxicological Perturbations and Variants of Pancreatic Islet Development in the Zebrafish Model. TOXICS 2016; 4. [PMID: 28393070 PMCID: PMC5380372 DOI: 10.3390/toxics4030020] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
The pancreatic islets, largely comprised of insulin-producing beta cells, play a critical role in endocrine signaling and glucose homeostasis. Because they have low levels of antioxidant defenses and a high perfusion rate, the endocrine islets may be a highly susceptible target tissue of chemical exposures. However, this endpoint, as well as the integrity of the surrounding exocrine pancreas, is often overlooked in studies of developmental toxicology. Disruption of development by toxicants can alter cell fate and migration, resulting in structural alterations that are difficult to detect in mammalian embryo systems, but that are easily observed in the zebrafish embryo model (Danio rerio). Using endogenously expressed fluorescent protein markers for developing zebrafish beta cells and exocrine pancreas tissue, we documented differences in islet area and incidence rates of islet morphological variants in zebrafish embryos between 48 and 96 h post fertilization (hpf), raised under control conditions commonly used in embryotoxicity assays. We identified critical windows for chemical exposures during which increased incidences of endocrine pancreas abnormalities were observed following exposure to cyclopamine (2–12 hpf), Mono-2-ethylhexyl phthalate (MEHP) (3–48 hpf), and Perfluorooctanesulfonic acid (PFOS) (3–48 hpf). Both islet area and length of the exocrine pancreas were sensitive to oxidative stress from exposure to the oxidant tert-butyl hydroperoxide during a highly proliferative critical window (72 hpf). Finally, pancreatic dysmorphogenesis following developmental exposures is discussed with respect to human disease.
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Affiliation(s)
- Karilyn E. Sant
- Department of Environmental Health Sciences, School of Public Health and Health Sciences, University of Massachusetts Amherst, Amherst, MA 01003, USA; (K.E.S.); (H.M.J.); (J.X.); (K.A.B.)
| | - Haydee M. Jacobs
- Department of Environmental Health Sciences, School of Public Health and Health Sciences, University of Massachusetts Amherst, Amherst, MA 01003, USA; (K.E.S.); (H.M.J.); (J.X.); (K.A.B.)
| | - Jiali Xu
- Department of Environmental Health Sciences, School of Public Health and Health Sciences, University of Massachusetts Amherst, Amherst, MA 01003, USA; (K.E.S.); (H.M.J.); (J.X.); (K.A.B.)
| | - Katrina A. Borofski
- Department of Environmental Health Sciences, School of Public Health and Health Sciences, University of Massachusetts Amherst, Amherst, MA 01003, USA; (K.E.S.); (H.M.J.); (J.X.); (K.A.B.)
| | - Larry G. Moss
- Duke Molecular Physiology Institute, Endocrine Division, Duke University Medical Center, Durham, NC 27701, USA; (L.G.M.); (J.B.M.)
| | - Jennifer B. Moss
- Duke Molecular Physiology Institute, Endocrine Division, Duke University Medical Center, Durham, NC 27701, USA; (L.G.M.); (J.B.M.)
| | - Alicia R. Timme-Laragy
- Department of Environmental Health Sciences, School of Public Health and Health Sciences, University of Massachusetts Amherst, Amherst, MA 01003, USA; (K.E.S.); (H.M.J.); (J.X.); (K.A.B.)
- Correspondence: ; Tel.: +1-413-545-7423
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Huang W, Beer RL, Delaspre F, Wang G, Edelman HE, Park H, Azuma M, Parsons MJ. Sox9b is a mediator of retinoic acid signaling restricting endocrine progenitor differentiation. Dev Biol 2016; 418:28-39. [PMID: 27565026 DOI: 10.1016/j.ydbio.2016.08.019] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2015] [Revised: 08/16/2016] [Accepted: 08/17/2016] [Indexed: 10/21/2022]
Abstract
Centroacinar cells (CACs) are ductal Notch-responsive progenitors that in the larval zebrafish pancreas differentiate to form new islets and ultimately contribute to the majority of the adult endocrine mass. Uncovering the mechanisms regulating CAC differentiation will facilitate understanding how insulin-producing β cells are formed. Previously we reported retinoic acid (RA) signaling and Notch signaling both regulate larval CAC differentiation, suggesting a shared downstream intermediate. Sox9b is a transcription factor important for islet formation whose expression is upregulated by Notch signaling in larval CACs. Here we report that sox9b expression in larval CACs is also regulated by RA signaling. Therefore, we hypothesized that Sox9b is an intermediate between both RA- and Notch-signaling pathways. In order to study the role of Sox9b in larval CACs, we generated two cre/lox based transgenic tools, which allowed us to express full-length or truncated Sox9b in larval CACs. In this way we were able to perform spatiotemporal-controlled Sox9b gain- and loss-of-function studies and observe the subsequent effect on progenitor differentiation. Our results are consistent with Sox9b regulating CAC differentiation by being a downstream intermediate of both RA- and Notch-signaling pathways. We also demonstrate that adult zebrafish with only one functional allele of sox9b undergo accelerated β-cell regeneration, an observation consistent with sox9b regulating CAC differentiation in adults.
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Affiliation(s)
- Wei Huang
- McKusick-Nathans Institute for Genetic Medicine, Johns Hopkins University School of Medicine, 733 N. Broadway, 470 Miller Research Building, Baltimore, MD 21205, USA
| | - Rebecca L Beer
- McKusick-Nathans Institute for Genetic Medicine, Johns Hopkins University School of Medicine, 733 N. Broadway, 470 Miller Research Building, Baltimore, MD 21205, USA
| | - Fabien Delaspre
- McKusick-Nathans Institute for Genetic Medicine, Johns Hopkins University School of Medicine, 733 N. Broadway, 470 Miller Research Building, Baltimore, MD 21205, USA
| | - Guangliang Wang
- McKusick-Nathans Institute for Genetic Medicine, Johns Hopkins University School of Medicine, 733 N. Broadway, 470 Miller Research Building, Baltimore, MD 21205, USA
| | - Hannah E Edelman
- McKusick-Nathans Institute for Genetic Medicine, Johns Hopkins University School of Medicine, 733 N. Broadway, 470 Miller Research Building, Baltimore, MD 21205, USA
| | - Hyewon Park
- Department of Molecular Biosciences, University of Kansas, 1200 Sunnyside Avenue, Lawrence, KS 66045, USA
| | - Mizuki Azuma
- Department of Molecular Biosciences, University of Kansas, 1200 Sunnyside Avenue, Lawrence, KS 66045, USA
| | - Michael J Parsons
- McKusick-Nathans Institute for Genetic Medicine, Johns Hopkins University School of Medicine, 733 N. Broadway, 470 Miller Research Building, Baltimore, MD 21205, USA; Department of Surgery, Johns Hopkins University School of Medicine, 733 N. Broadway, 470 Miller Research Building, Baltimore, MD 21205, USA
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Nissim S, Weeks O, Talbot JC, Hedgepeth JW, Wucherpfennig J, Schatzman-Bone S, Swinburne I, Cortes M, Alexa K, Megason S, North TE, Amacher SL, Goessling W. Iterative use of nuclear receptor Nr5a2 regulates multiple stages of liver and pancreas development. Dev Biol 2016; 418:108-123. [PMID: 27474396 DOI: 10.1016/j.ydbio.2016.07.019] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2015] [Revised: 07/19/2016] [Accepted: 07/20/2016] [Indexed: 12/22/2022]
Abstract
The stepwise progression of common endoderm progenitors into differentiated liver and pancreas organs is regulated by a dynamic array of signals that are not well understood. The nuclear receptor subfamily 5, group A, member 2 gene nr5a2, also known as Liver receptor homolog-1 (Lrh-1) is expressed in several tissues including the developing liver and pancreas. Here, we interrogate the role of Nr5a2 at multiple developmental stages using genetic and chemical approaches and uncover novel pleiotropic requirements during zebrafish liver and pancreas development. Zygotic loss of nr5a2 in a targeted genetic null mutant disrupted the development of the exocrine pancreas and liver, while leaving the endocrine pancreas intact. Loss of nr5a2 abrogated exocrine pancreas markers such as trypsin, while pancreas progenitors marked by ptf1a or pdx1 remained unaffected, suggesting a role for Nr5a2 in regulating pancreatic acinar cell differentiation. In the developing liver, Nr5a2 regulates hepatic progenitor outgrowth and differentiation, as nr5a2 mutants exhibited reduced hepatoblast markers hnf4α and prox1 as well as differentiated hepatocyte marker fabp10a. Through the first in vivo use of Nr5a2 chemical antagonist Cpd3, the iterative requirement for Nr5a2 for exocrine pancreas and liver differentiation was temporally elucidated: chemical inhibition of Nr5a2 function during hepatopancreas progenitor specification was sufficient to disrupt exocrine pancreas formation and enhance the size of the embryonic liver, suggesting that Nr5a2 regulates hepatic vs. pancreatic progenitor fate choice. Chemical inhibition of Nr5a2 at a later time during pancreas and liver differentiation was sufficient to block the formation of mature acinar cells and hepatocytes. These findings define critical iterative and pleiotropic roles for Nr5a2 at distinct stages of pancreas and liver organogenesis, and provide novel perspectives for interpreting the role of Nr5a2 in disease.
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Affiliation(s)
- Sahar Nissim
- Gastroenterology Division, Brigham and Women's Hospital, Harvard Medical School, Boston, MA 02115, USA; Genetics Division, Brigham and Women's Hospital, Harvard Medical School, Boston, MA 02115, USA; Dana-Farber Cancer Institute, Boston, MA 02115, USA
| | - Olivia Weeks
- Genetics Division, Brigham and Women's Hospital, Harvard Medical School, Boston, MA 02115, USA
| | - Jared C Talbot
- Departments of Molecular Genetics and Biological Chemistry and Pharmacology, Ohio State University, Columbus, OH 43210, USA
| | - John W Hedgepeth
- Genetics Division, Brigham and Women's Hospital, Harvard Medical School, Boston, MA 02115, USA
| | - Julia Wucherpfennig
- Genetics Division, Brigham and Women's Hospital, Harvard Medical School, Boston, MA 02115, USA
| | | | - Ian Swinburne
- Department of Systems Biology, Harvard Medical School, Boston, MA 02115, USA
| | - Mauricio Cortes
- Department of Pathology, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA 02115, USA
| | - Kristen Alexa
- Genetics Division, Brigham and Women's Hospital, Harvard Medical School, Boston, MA 02115, USA
| | - Sean Megason
- Department of Systems Biology, Harvard Medical School, Boston, MA 02115, USA
| | - Trista E North
- Department of Pathology, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA 02115, USA; Harvard Stem Cell Institute, Cambridge, MA 02138, USA
| | - Sharon L Amacher
- Departments of Molecular Genetics and Biological Chemistry and Pharmacology, Ohio State University, Columbus, OH 43210, USA
| | - Wolfram Goessling
- Gastroenterology Division, Brigham and Women's Hospital, Harvard Medical School, Boston, MA 02115, USA; Genetics Division, Brigham and Women's Hospital, Harvard Medical School, Boston, MA 02115, USA; Dana-Farber Cancer Institute, Boston, MA 02115, USA; Harvard Stem Cell Institute, Cambridge, MA 02138, USA; Broad Institute of MIT and Harvard, Cambridge, MA 02142, USA.
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44
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Ultrastructural Mapping of the Zebrafish Gastrointestinal System as a Basis for Experimental Drug Studies. BIOMED RESEARCH INTERNATIONAL 2016; 2016:8758460. [PMID: 27340669 PMCID: PMC4909927 DOI: 10.1155/2016/8758460] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/17/2016] [Accepted: 05/04/2016] [Indexed: 12/15/2022]
Abstract
Research in the field of gastroenterology is increasingly focused on the use of alternative nonrodent model organisms to provide new experimental tools to study chronic diseases. The zebrafish is a particularly valuable experimental platform to explore organ and cell structure-function relationships under relevant biological and pathobiological settings. This is due to its optical transparency and its close-to-human genetic makeup. To-date, the structure-function properties of the GIS of the zebrafish are relatively unexplored and limited to histology and fluorescent microscopy. Occasionally those studies include EM of a given subcellular process but lack the required full histological picture. In this work, we employed a novel combined biomolecular imaging approach in order to cross-correlate 3D ultrastructure over different length scales (optical-, X-ray micro-CT, and high-resolution EM). Our correlated imaging studies and subsequent data modelling provide to our knowledge the first detailed 3D picture of the zebrafish larvae GIS. Our results provide unequivocally a limit of confidence for studying various digestive disorders and drug delivery pathways in the zebrafish.
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In Vivo Screening Using Transgenic Zebrafish Embryos Reveals New Effects of HDAC Inhibitors Trichostatin A and Valproic Acid on Organogenesis. PLoS One 2016; 11:e0149497. [PMID: 26900852 PMCID: PMC4763017 DOI: 10.1371/journal.pone.0149497] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2015] [Accepted: 02/02/2016] [Indexed: 01/04/2023] Open
Abstract
The effects of endocrine disrupting chemicals (EDCs) on reproduction are well known, whereas their developmental effects are much less characterized. However, exposure to endocrine disruptors during organogenesis may lead to deleterious and permanent problems later in life. Zebrafish (Danio rerio) transgenic lines expressing the green fluorescent protein (GFP) in specific organs and tissues are powerful tools to uncover developmental defects elicited by EDCs. Here, we used seven transgenic lines to visualize in vivo whether a series of EDCs and other pharmaceutical compounds can alter organogenesis in zebrafish. We used transgenic lines expressing GFP in pancreas, liver, blood vessels, inner ear, nervous system, pharyngeal tooth and pectoral fins. This screen revealed that four of the tested chemicals have detectable effects on different organs, which shows that the range of effects elicited by EDCs is wider than anticipated. The endocrine disruptor tetrabromobisphenol-A (TBBPA), as well as the three drugs diclofenac, trichostatin A (TSA) and valproic acid (VPA) induced abnormalities in the embryonic vascular system of zebrafish. Moreover, TSA and VPA induced specific alterations during the development of pancreas, an observation that was confirmed by in situ hybridization with specific markers. Developmental delays were also induced by TSA and VPA in the liver and in pharyngeal teeth, resulting in smaller organ size. Our results show that EDCs can induce a large range of developmental alterations during embryogenesis of zebrafish and establish GFP transgenic lines as powerful tools to screen for EDCs effects in vivo.
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Tabassum N, Tai H, Jung DW, Williams DR. Fishing for Nature's Hits: Establishment of the Zebrafish as a Model for Screening Antidiabetic Natural Products. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE : ECAM 2015; 2015:287847. [PMID: 26681965 PMCID: PMC4670909 DOI: 10.1155/2015/287847] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/31/2015] [Accepted: 10/28/2015] [Indexed: 12/14/2022]
Abstract
Diabetes mellitus affects millions of people worldwide and significantly impacts their quality of life. Moreover, life threatening diseases, such as myocardial infarction, blindness, and renal disorders, increase the morbidity rate associated with diabetes. Various natural products from medicinal plants have shown potential as antidiabetes agents in cell-based screening systems. However, many of these potential "hits" fail in mammalian tests, due to issues such as poor pharmacokinetics and/or toxic side effects. To address this problem, the zebrafish (Danio rerio) model has been developed as a "bridge" to provide an experimentally convenient animal-based screening system to identify drug candidates that are active in vivo. In this review, we discuss the application of zebrafish to drug screening technologies for diabetes research. Specifically, the discovery of natural product-based antidiabetes compounds using zebrafish will be described. For example, it has recently been demonstrated that antidiabetic natural compounds can be identified in zebrafish using activity guided fractionation of crude plant extracts. Moreover, the development of fluorescent-tagged glucose bioprobes has allowed the screening of natural product-based modulators of glucose homeostasis in zebrafish. We hope that the discussion of these advances will illustrate the value and simplicity of establishing zebrafish-based assays for antidiabetic compounds in natural products-based laboratories.
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Affiliation(s)
- Nadia Tabassum
- New Drug Targets Laboratory, School of Life Sciences, Gwangju Institute of Science and Technology, Gwangju 500-712, Republic of Korea
| | - Hongmei Tai
- Department of Endocrinology, Yanji Hospital, Jilin 133000, China
| | - Da-Woon Jung
- New Drug Targets Laboratory, School of Life Sciences, Gwangju Institute of Science and Technology, Gwangju 500-712, Republic of Korea
| | - Darren R. Williams
- New Drug Targets Laboratory, School of Life Sciences, Gwangju Institute of Science and Technology, Gwangju 500-712, Republic of Korea
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Lodh S, Hostelley TL, Leitch CC, O'Hare EA, Zaghloul NA. Differential effects on β-cell mass by disruption of Bardet-Biedl syndrome or Alstrom syndrome genes. Hum Mol Genet 2015; 25:57-68. [PMID: 26494903 DOI: 10.1093/hmg/ddv447] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2015] [Accepted: 10/20/2015] [Indexed: 12/15/2022] Open
Abstract
Rare genetic syndromes characterized by early-onset type 2 diabetes have revealed the importance of pancreatic β-cells in genetic susceptibility to diabetes. However, the role of genetic regulation of β-cells in disorders that are also characterized by highly penetrant obesity, a major additional risk factor, is unclear. In this study, we investigated the contribution of genes associated with two obesity ciliopathies, Bardet-Biedl Syndrome and Alstrom Syndrome, to the production and maintenance of pancreatic β-cells. Using zebrafish models of these syndromes, we identified opposing effects on production of β-cells. Loss of the Alstrom gene, alms1, resulted in a significant decrease in β-cell production whereas loss of BBS genes, bbs1 or bbs4, resulted in a significant increase. Examination of the regulatory program underlying β-cell production suggested that these effects were specific to β-cells. In addition to the initial production of β-cells, we observed significant differences in their continued maintenance. Under prolonged exposure to high glucose conditions, alms1-deficient β-cells were unable to continually expand as a result of decreased proliferation and increased cell death. Although bbs1-deficient β-cells were similarly susceptible to apoptosis, the overall maintenance of β-cell number in those animals was sustained likely due to increased proliferation. Taken together, these findings implicate discrepant production and maintenance of β-cells in the differential susceptibility to diabetes found between these two genetic syndromes.
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Affiliation(s)
- Sukanya Lodh
- Division of Endocrinology, Diabetes and Nutrition, Department of Medicine, University of Maryland School of Medicine, Baltimore, MD USA
| | - Timothy L Hostelley
- Division of Endocrinology, Diabetes and Nutrition, Department of Medicine, University of Maryland School of Medicine, Baltimore, MD USA
| | - Carmen C Leitch
- Division of Endocrinology, Diabetes and Nutrition, Department of Medicine, University of Maryland School of Medicine, Baltimore, MD USA
| | - Elizabeth A O'Hare
- Division of Endocrinology, Diabetes and Nutrition, Department of Medicine, University of Maryland School of Medicine, Baltimore, MD USA
| | - Norann A Zaghloul
- Division of Endocrinology, Diabetes and Nutrition, Department of Medicine, University of Maryland School of Medicine, Baltimore, MD USA
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Otsuka T, Tsukahara T, Takeda H. Development of the pancreas in medaka, Oryzias latipes, from embryo to adult. Dev Growth Differ 2015; 57:557-69. [PMID: 26435359 DOI: 10.1111/dgd.12237] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2015] [Revised: 07/17/2015] [Accepted: 07/19/2015] [Indexed: 12/17/2022]
Abstract
To address conserved and unique features of fish pancreas development, we performed extensive analyses of pancreatic development in medaka embryos and adults using pdx1- and ptf1a-transgenic medaka, in situ hybridization and immunohistochemistry. The markers used in these analyses included pdx1, nkx6.1, nkx6.2, nkx2.2, Islet1, insulin, Somatostatin, glucagon, ptf1a, ela3l, trypsin, and amylase. The double transgenic (Tg) fish produced in the present study visualizes the development of endocrine (pdx1+) and exocrine (ptf1a+) parts simultaneously in living fishes. Like other vertebrates, the medaka pancreas develops as two (dorsal and ventral) buds in the anterior gut tube, which soon fuse into a single anlagen. The double Tg fish demonstrates that the differential property between the two buds is already established at the initial phase of bud development as indicated by strong pdx1 expression in the dorsal one. This Tg fish also allowed us to examine the gross morphology and the structure of adult pancreas and revealed unique characters of medaka pancreas such as broad and multiple connections with the gut tube along the anterior-posterior axis.
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Affiliation(s)
- Takayoshi Otsuka
- Department of Biological Sciences, Graduate School of Science, University of Tokyo, Hongo, Bunkyo-ku, Tokyo, 113-0033, Japan
| | - Tatsuya Tsukahara
- Department of Biological Sciences, Graduate School of Science, University of Tokyo, Hongo, Bunkyo-ku, Tokyo, 113-0033, Japan
| | - Hiroyuki Takeda
- Department of Biological Sciences, Graduate School of Science, University of Tokyo, Hongo, Bunkyo-ku, Tokyo, 113-0033, Japan.,JST, CREST, 4-1-8 Honcho, Kawaguchi, Saitama, 332-0012, Japan
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Abstract
The zebrafish has become a prominent vertebrate model for disease and has already contributed to several examples of successful phenotype-based drug discovery. For the zebrafish to become useful in drug development more broadly, key hurdles must be overcome, including a more comprehensive elucidation of the similarities and differences between human and zebrafish biology. Recent studies have begun to establish the capabilities and limitations of zebrafish for disease modelling, drug screening, target identification, pharmacology, and toxicology. As our understanding increases and as the technologies for manipulating zebrafish improve, it is hoped that the zebrafish will have a key role in accelerating the emergence of precision medicine.
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Affiliation(s)
- Calum A MacRae
- Cardiovascular Medicine and Network Medicine Divisions, Brigham and Women's Hospital, Boston, Massachusetts 02115, USA
- Harvard Stem Cell Institute, Cambridge, Massachusetts 02138, USA
- Department of Medicine, Harvard Medical School, Boston, Massachusetts 02115, USA
- Broad Institute of MIT and Harvard, Cambridge, Massachusetts 02142, USA
| | - Randall T Peterson
- Department of Medicine, Harvard Medical School, Boston, Massachusetts 02115, USA
- Broad Institute of MIT and Harvard, Cambridge, Massachusetts 02142, USA
- Cardiovascular Research Center, Massachusetts General Hospital, Charlestown, Massachusetts 02129, USA
- Department of Systems Biology, Harvard Medical School, Boston, Massachusetts 02115, USA
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Wang YJ, Park JT, Parsons MJ, Leach SD. Fate mapping of ptf1a-expressing cells during pancreatic organogenesis and regeneration in zebrafish. Dev Dyn 2015; 244:724-35. [PMID: 25773748 DOI: 10.1002/dvdy.24271] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2014] [Revised: 02/22/2015] [Accepted: 03/01/2015] [Indexed: 01/26/2023] Open
Abstract
BACKGROUND Pancreas development in zebrafish shares many features with mammals, including the participation of epithelial progenitor cells expressing pancreas transcription factor 1a (ptf1a). However, to date it has remained unclear whether, as in mammals, ptf1a-expressing zebrafish pancreatic progenitors are able to contribute to multiple exocrine and endocrine lineages. To delineate the lineage potential of ptf1a-expressing cells, we generated ptf1a:creER(T2) transgenic fish and performed genetic-inducible lineage tracing in developmental, regenerating, and ptf1a-deficient zebrafish pancreas. RESULTS In addition to their contribution to the acinar cell lineage, ptf1a-expressing cells give rise to both pancreatic Notch-responsive-cells (PNCs) as well as small numbers of endocrine cells during pancreatic development. In fish with ptf1a haploinsufficiency, a higher proportion of ptf1a lineage-labeled cells are traced into the PNC and endocrine compartments. Further reduction of ptf1a gene dosage converts pancreatic progenitor cells to gall bladder and other non-pancreatic cell fates. CONCLUSIONS Our results confirm the presence of multipotent ptf1a-expressing progenitor cells in developing zebrafish pancreas, with reduced ptf1a dosage promoting greater contributions towards non-acinar lineages. As in mammals, loss of ptf1a results in conversion of nascent pancreatic progenitor cells to non-pancreatic cell fates, underscoring the central role of ptf1a in foregut tissue specification.
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Affiliation(s)
- Yue J Wang
- The McKusick-Nathans Institute of Genetic Medicine, Johns Hopkins University School of Medicine, Baltimore, Maryland
| | - Joon T Park
- The Department of Surgery, Johns Hopkins University School of Medicine, Baltimore, Maryland
| | - Michael J Parsons
- The McKusick-Nathans Institute of Genetic Medicine, Johns Hopkins University School of Medicine, Baltimore, Maryland.,The Department of Surgery, Johns Hopkins University School of Medicine, Baltimore, Maryland
| | - Steven D Leach
- The McKusick-Nathans Institute of Genetic Medicine, Johns Hopkins University School of Medicine, Baltimore, Maryland.,The Department of Surgery, Johns Hopkins University School of Medicine, Baltimore, Maryland
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