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Yuan W, Xiao Y, Zhang Y, Xiang K, Huang T, Diaby M, Gao J. Apoptotic mechanism of development inhibition in zebrafish induced by esketamine. Toxicol Appl Pharmacol 2024; 482:116789. [PMID: 38103741 DOI: 10.1016/j.taap.2023.116789] [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: 09/30/2023] [Revised: 11/28/2023] [Accepted: 12/11/2023] [Indexed: 12/19/2023]
Abstract
Esketamine, a widely used intravenous general anesthetic, is also employed for obstetric and pediatric anesthesia, and depression treatment. However, concerns regarding esketamine abuse have emerged. Moreover, the potential in vivo toxicity of esketamine on growth and development remains unclear. To address these concerns, we investigated the effects of esketamine exposure on developmental parameters, cell apoptosis, and gene expression in zebrafish. Esketamine exposure concentration-dependently decreased the heart rate and body length of zebrafish embryos/larvae while increasing the hatching rate and spontaneous movement frequency. Developmental retardation of zebrafish larvae, including shallow pigmentation, small eyes, and delayed yolk sac absorption, was also observed following esketamine treatment. Esketamine exposure altered the expression of apoptosis-related genes in zebrafish heads, primarily downregulating bax, caspase9, caspase3, caspase6, and caspase7. Intriguingly, BTSA1, a Bax agonist, reversed the anti-apoptotic and decelerated body growth effects of esketamine in zebrafish. Collectively, our findings suggest that esketamine may hinder embryonic development by inhibiting embryonic apoptosis via the Bax/Caspase9/Caspase3 pathway. To the best of our knowledge, this is the first study to report the lethal toxicity of esketamine in zebrafish. We have elucidated the developmental toxic effects of esketamine on zebrafish larvae and its potential apoptotic mechanisms. Further studies are warranted to evaluate the safety of esketamine in animals and humans.
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Affiliation(s)
- Wenjuan Yuan
- Medical College of Yangzhou University, Yangzhou, China; Department of Anesthesiology, Institute of Anesthesia, Emergency and Critical Care, Yangzhou University Affiliated Northern Jiangsu People's Hospital, Yangzhou, Jiangsu, China
| | - Yinggang Xiao
- Medical College of Yangzhou University, Yangzhou, China; Department of Anesthesiology, Institute of Anesthesia, Emergency and Critical Care, Yangzhou University Affiliated Northern Jiangsu People's Hospital, Yangzhou, Jiangsu, China
| | - Yang Zhang
- Department of Anesthesiology, Institute of Anesthesia, Emergency and Critical Care, Yangzhou University Affiliated Northern Jiangsu People's Hospital, Yangzhou, Jiangsu, China
| | - Kuilin Xiang
- College of Animal Science and Technology, Yangzhou University, Jiangsu, China
| | - Tianfeng Huang
- Department of Anesthesiology, Institute of Anesthesia, Emergency and Critical Care, Yangzhou University Affiliated Northern Jiangsu People's Hospital, Yangzhou, Jiangsu, China
| | - Mohamed Diaby
- College of Animal Science and Technology, Yangzhou University, Jiangsu, China
| | - Ju Gao
- Department of Anesthesiology, Institute of Anesthesia, Emergency and Critical Care, Yangzhou University Affiliated Northern Jiangsu People's Hospital, Yangzhou, Jiangsu, China.
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2
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Häcker G, Haimovici A. Sub-lethal signals in the mitochondrial apoptosis apparatus: pernicious by-product or physiological event? Cell Death Differ 2023; 30:250-257. [PMID: 36131076 PMCID: PMC9490730 DOI: 10.1038/s41418-022-01058-0] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2022] [Revised: 08/09/2022] [Accepted: 08/18/2022] [Indexed: 11/09/2022] Open
Abstract
One of the tasks of mitochondria is the rule over life and death: when the outer membrane is permeabilized, the release of intermembrane space proteins causes cell death by apoptosis. For a long time, this mitochondrial outer membrane permeabilization (MOMP) has been accepted as the famous step from which no cell returns. Recent results have however shown that this quite plainly does not have to be the case. A cell can also undergo only a little MOMP, and it can efficiently repair damage it has incurred in the process. There is no doubt now that such low-scale permeabilization occurs. A major unclarified issue is the biological relevance. Is small-scale mitochondrial permeabilization an accident, a leakiness of the apoptosis apparatus, perhaps during restructuring of the mitochondrial network? Is it attempted suicide, where cell death by apoptosis is the real goal but the stimulus failed to reach the threshold? Or, more boldly, is there a true biological meaning behind the event of the release of low amounts of mitochondrial components? We will here explore this last possibility, which we believe is on one hand appealing, on the other hand plausible and supported by some evidence. Recent data are consistent with the view that sub-lethal signals in the mitochondrial apoptosis pathway can drive inflammation, the first step of an immune reaction. The apoptosis apparatus is almost notoriously easy to trigger. Sub-lethal signals may be even easier to set off. We suggest that the apoptosis apparatus is used in this way to sound the call when the first human cell is infected by a pathogen.
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Affiliation(s)
- Georg Häcker
- Institute of Medical Microbiology and Hygiene, Medical Center, University of Freiburg, Faculty of Medicine, Freiburg, Germany.
- BIOSS Centre for Biological Signalling Studies, University of Freiburg, Freiburg, Germany.
| | - Aladin Haimovici
- Institute of Medical Microbiology and Hygiene, Medical Center, University of Freiburg, Faculty of Medicine, Freiburg, Germany
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3
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Tang Y, Shi C, Qin Y, Wang S, Pan H, Chen M, Yu X, Lou Y, Fan G. Network Pharmacology-Based Investigation and Experimental Exploration of the Antiapoptotic Mechanism of Colchicine on Myocardial Ischemia Reperfusion Injury. Front Pharmacol 2022; 12:804030. [PMID: 34975499 PMCID: PMC8716846 DOI: 10.3389/fphar.2021.804030] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2021] [Accepted: 11/29/2021] [Indexed: 12/11/2022] Open
Abstract
Background: The beneficial effects of colchicine on cardiovascular disease have been widely reported in recent studies. Previous research demonstrated that colchicine has a certain protective effect on ischemic myocardium and has the potential to treat myocardial ischemia reperfusion injury (MIRI). However, the potential targets and pharmacological mechanism of colchicine to treat MIRI has not been reported. Methods: In this study, we used network pharmacology and experimental verification to investigate the pharmacological mechanisms of colchicine for the treatment of MIRI. Potential targets of colchicine and MIRI related genes were screened from public databases. The mechanism of colchicine in the treatment of MIRI was determined by protein-protein interaction (PPI), gene ontology (GO) and Kyoto Encyclopedia of Genes and Genomes (KEGG) pathway enrichment analysis. Additionally, we evaluated the effect of colchicine on H9C2 cell activity using CCK-8 assays, observed the effect of colchicine on H9C2 cell apoptosis via flow cytometry, and further verified the expression of key targets after colchicine treated by Western blot. Results: A total of 626 target genes for colchicine and 1549 MIRI disease targets were obtained. 138 overlapping genes were determined as potential targets of colchicine in treating MIRI. the PPI network analysis demonstrated that the targets linked to MIRI were ALB, TNF, ACTB, AKT1, IL6, TP53, IL1B, CASP3 and these targets showed nice affinity with colchicine in molecular docking experiments. The results of GO analysis and KEGG pathway enrichment demonstrated that the anti-MIRI effect of colchicine involves in apoptotic signaling pathway. Further tests suggested that colchicine can protect H9C2 cell from Hypoxia/Reoxygenation (H/R) injury through anti-apoptotic effects. Western blot results demonstrated that colchicine can inhibited MIRI induced apoptosis of H9C2 cell by enhancing the decreased levels of Caspase-3 in myocardial injure model induced by H/R and activating the PI3K/AKT/eNOS pathway. Conclusions: we performed network pharmacology and experimental evaluation to reveal the pharmacological mechanism of colchicine against MIRI. The results from this study could provide a theoretical basis for the development and clinical application of colchicine.
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Affiliation(s)
- Yuanjun Tang
- Department of Clinical Pharmacy, Shanghai General Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - Chenyang Shi
- Department of Clinical Pharmacy, Shanghai General Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - Yingyi Qin
- Department of Health Statistics, Naval Medical University, Shanghai, China
| | - Shuowen Wang
- Department of Clinical Pharmacy, Shanghai General Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - Hui Pan
- Department of Clinical Pharmacy, Shanghai General Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - Ming Chen
- Department of Clinical Pharmacy, Shanghai General Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - Xuemei Yu
- Department of Clinical Pharmacy, Shanghai General Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - Yuefen Lou
- Department of Pharmacy, Shanghai Fourth People's Hospital Affiliated to Tongji University School of Medicine, Shanghai, China
| | - Guorong Fan
- Department of Clinical Pharmacy, Shanghai General Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
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4
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Draghici CC, Miulescu RG, Petca RC, Petca A, Dumitrașcu MC, Șandru F. Teratogenic effect of isotretinoin in both fertile females and males (Review). Exp Ther Med 2021; 21:534. [PMID: 33815607 DOI: 10.3892/etm.2021.9966] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2020] [Accepted: 12/02/2020] [Indexed: 12/15/2022] Open
Abstract
Isotretinoin is an oral derivate of vitamin A that has been used since 1982 for the treatment of multiple dermatologic conditions such as severe acne, rosacea, scarring alopecia, ichthyosis or non-melanoma skin cancer prophylaxis. The recommended dose is 0.5-1 mg/kg/day for a period of 4-6 months in sebaceous gland pathologies. There are many adverse effects caused by isotretinoin but by far the most important is the teratogenicity induced by this drug which is estimated to have a 20-35% risk to infants that are exposed to isotretinoin in utero and includes numerous congenital defects such as craniofacial defects, cardiovascular and neurological malformations or thymic disorders. Isotretinoin induces apoptosis and cell cycle arrest in human sebocytes, emphasizing these as processes associated with its teratogenic effect. The aim of this review is to analyze the latest literature data regarding the teratogenic effect of isotretinoin for both fertile females and males and its biological effects underlying the occurrence of congenital malformations under the influence of isotretinoin.
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Affiliation(s)
- Carmen-Cristina Draghici
- Department of Dermatology, 'Elias' Emergency University Hospital, 011461 Bucharest, Romania.,Department of Physioplogy, 'Carol Davila' University of Medicine and Pharmacy, 050474 Bucharest, Romania
| | - Raluca-Gabriela Miulescu
- Department of Dermatology, 'Elias' Emergency University Hospital, 011461 Bucharest, Romania.,Department of Farmacology, 'Carol Davila' University of Medicine and Pharmacy, 050474 Bucharest, Romania
| | - Răzvan-Cosmin Petca
- Department of Urology, 'Carol Davila' University of Medicine and Pharmacy, 050474 Bucharest, Romania.,Department of Urology, 'Prof. Dr. Theodor Burghele' Clinical Hospital, 061344 Bucharest, Romania
| | - Aida Petca
- Department of Obstetrics and Gynecology, 'Carol Davila' University of Medicine and Pharmacy, 050474 Bucharest, Romania.,Department of Obstetrics and Gynecology, 'Elias' Emergency Hospital, 011461 Bucharest, Romania
| | - Mihai Cristian Dumitrașcu
- Department of Obstetrics and Gynecology, 'Carol Davila' University of Medicine and Pharmacy, 050474 Bucharest, Romania.,Department of Obstetrics and Gynecology, University Emergency Hospital of Bucharest, 050098 Bucharest, Romania
| | - Florica Șandru
- Department of Dermatology, 'Elias' Emergency University Hospital, 011461 Bucharest, Romania.,Department of Dermatology, 'Carol Davila' University of Medicine and Pharmacy, 050474 Bucharest, Romania
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5
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Pourhanifeh MH, Shafabakhsh R, Reiter RJ, Asemi Z. The Effect of Resveratrol on Neurodegenerative Disorders: Possible Protective Actions Against Autophagy, Apoptosis, Inflammation and Oxidative Stress. Curr Pharm Des 2019; 25:2178-2191. [DOI: 10.2174/1381612825666190717110932] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2019] [Accepted: 07/02/2019] [Indexed: 12/12/2022]
Abstract
The prevalence of neurodegenerative disorders characterized by the loss of neuronal function is rapidly
increasing. The pathogenesis of the majority of these diseases is not entirely clear, but current evidence has
shown the possibility that autophagy, apoptosis, inflammation and oxidative stress are involved. The present
review summarizes the therapeutic effects of resveratrol on neurodegenerative disorders, based on the especially
molecular biology of these diseases. The PubMed, Cochrane, Web of Science and Scopus databases were
searched for studies published in English until March 30th, 2019 that contained data for the role of inflammation,
oxidative stress, angiogenesis and apoptosis in the neurodegenerative disorders. There are also studies documenting
the role of molecular processes in the progression of central nervous system diseases. Based on current evidence,
resveratrol has potential properties that may reduce cell damage due to inflammation. This polyphenol
affects cellular processes, including autophagy and the apoptosis cascade under stressful conditions. Current
evidence supports the beneficial effects of resveratrol on the therapy of neurodegenerative disorders.
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Affiliation(s)
- Mohammad H. Pourhanifeh
- Research Center for Biochemistry and Nutrition in Metabolic Diseases, Kashan University of Medical Sciences, Kashan, Iran
| | - Rana Shafabakhsh
- Research Center for Biochemistry and Nutrition in Metabolic Diseases, Kashan University of Medical Sciences, Kashan, Iran
| | - Russel J. Reiter
- Department of Cellular and Structural Biology, University of Texas Health Science Center, San Antonio, TX, United States
| | - Zatollah Asemi
- Research Center for Biochemistry and Nutrition in Metabolic Diseases, Kashan University of Medical Sciences, Kashan, Iran
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6
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7
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Kamber Kaya HE, Ditzel M, Meier P, Bergmann A. An inhibitory mono-ubiquitylation of the Drosophila initiator caspase Dronc functions in both apoptotic and non-apoptotic pathways. PLoS Genet 2017; 13:e1006438. [PMID: 28207763 PMCID: PMC5313150 DOI: 10.1371/journal.pgen.1006438] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2016] [Accepted: 10/21/2016] [Indexed: 11/19/2022] Open
Abstract
Apoptosis is an evolutionary conserved cell death mechanism, which requires activation of initiator and effector caspases. The Drosophila initiator caspase Dronc, the ortholog of mammalian Caspase-2 and Caspase-9, has an N-terminal CARD domain that recruits Dronc into the apoptosome for activation. In addition to its role in apoptosis, Dronc also has non-apoptotic functions such as compensatory proliferation. One mechanism to control the activation of Dronc is ubiquitylation. However, the mechanistic details of ubiquitylation of Dronc are less clear. For example, monomeric inactive Dronc is subject to non-degradative ubiquitylation in living cells, while ubiquitylation of active apoptosome-bound Dronc triggers its proteolytic degradation in apoptotic cells. Here, we examined the role of non-degradative ubiquitylation of Dronc in living cells in vivo, i.e. in the context of a multi-cellular organism. Our in vivo data suggest that in living cells Dronc is mono-ubiquitylated on Lys78 (K78) in its CARD domain. This ubiquitylation prevents activation of Dronc in the apoptosome and protects cells from apoptosis. Furthermore, K78 ubiquitylation plays an inhibitory role for non-apoptotic functions of Dronc. We provide evidence that not all of the non-apoptotic functions of Dronc require its catalytic activity. In conclusion, we demonstrate a mechanism whereby Dronc’s apoptotic and non-apoptotic activities can be kept silenced in a non-degradative manner through a single ubiquitylation event in living cells. Apoptosis is a programmed cell death mechanism which is conserved from flies to humans. Apoptosis is mediated by proteases, termed caspases that cleave cellular proteins and trigger the death of the cell. Activation of caspases is regulated at various levels such as protein-protein interaction for initiator caspases and ubiquitylation. Caspase 9 in mammals and its Drosophila ortholog Dronc carry a protein-protein interaction domain (CARD) in their prodomain which interacts with scaffolding proteins to form the apoptosome, a cell-death platform. Here, we show that Dronc is mono-ubiquitylated at Lysine 78 in its CARD domain. This ubiquitylation interferes with the formation of the apoptosome, causing inhibition of apoptosis. In addition to its apoptotic function, Dronc also participates in events where caspase activity is not required for cell killing, but for regulating other functions, so-called non-apoptotic functions of caspases such as apoptosis-induced proliferation. We found that mono-ubiquitylation of Lysine 78 plays an inhibitory role for these non-apoptotic functions of Dronc. Interestingly, we demonstrate that the catalytic activity of Dronc is not strictly required in these processes. Our in vivo study sheds light on how a single mono-ubiquitylation event could inhibit both apoptotic and non-apoptotic functions of a caspase.
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Affiliation(s)
- Hatem Elif Kamber Kaya
- Department of Molecular, Cell and Cancer Biology, University of Massachusetts Medical School, Worcester, Massachusetts, United States of America
| | - Mark Ditzel
- Institute for Genetics and Molecular Medicine, Edinburgh Cancer Research Centre, The University of Edinburgh, Edinburgh, United Kingdom
| | - Pascal Meier
- The Breast Cancer Now Toby Robins Research Centre, Institute of Cancer Research, Mary-Jean Mitchell Green Building, Chester Beatty Laboratories, London, United Kingdom
| | - Andreas Bergmann
- Department of Molecular, Cell and Cancer Biology, University of Massachusetts Medical School, Worcester, Massachusetts, United States of America
- * E-mail:
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8
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The unconventional myosin CRINKLED and its mammalian orthologue MYO7A regulate caspases in their signalling roles. Nat Commun 2016; 7:10972. [PMID: 26960254 PMCID: PMC4792956 DOI: 10.1038/ncomms10972] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2015] [Accepted: 02/05/2016] [Indexed: 12/25/2022] Open
Abstract
Caspases provide vital links in non-apoptotic regulatory networks controlling inflammation, compensatory proliferation, morphology and cell migration. How caspases are activated under non-apoptotic conditions and process a selective set of substrates without killing the cell remain enigmatic. Here we find that the Drosophila unconventional myosin CRINKLED (CK) selectively interacts with the initiator caspase DRONC and regulates some of its non-apoptotic functions. Loss of CK in the arista, border cells or proneural clusters of the wing imaginal discs affects DRONC-dependent patterning. Our data indicate that CK acts as substrate adaptor, recruiting SHAGGY46/GSK3-β to DRONC, thereby facilitating caspase-mediated cleavage and localized modulation of kinase activity. Similarly, the mammalian CK counterpart, MYO7A, binds to and impinges on CASPASE-8, revealing a new regulatory axis affecting receptor interacting protein kinase-1 (RIPK1)>CASPASE-8 signalling. Together, our results expose a conserved role for unconventional myosins in transducing caspase-dependent regulation of kinases, allowing them to take part in specific signalling events.
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9
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Flusberg DA, Sorger PK. Surviving apoptosis: life-death signaling in single cells. Trends Cell Biol 2015; 25:446-58. [PMID: 25920803 PMCID: PMC4570028 DOI: 10.1016/j.tcb.2015.03.003] [Citation(s) in RCA: 97] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2014] [Revised: 03/19/2015] [Accepted: 03/19/2015] [Indexed: 12/16/2022]
Abstract
Tissue development and homeostasis are regulated by opposing pro-survival and pro-death signals. An interesting feature of the Tumor Necrosis Factor (TNF) family of ligands is that they simultaneously activate opposing signals within a single cell via the same ligand-receptor complex. The magnitude of pro-death events such as caspase activation and pro-survival events such as Nuclear Factor (NF)-κB activation vary not only from one cell type to the next but also among individual cells of the same type due to intrinsic and extrinsic noise. The molecules involved in these pro-survival and/or pro-death pathways, and the different phenotypes that result from their activities, have been recently reviewed. Here we focus on the impact of cell-to-cell variability in the strength of these opposing signals on shaping cell fate decisions.
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Affiliation(s)
- Deborah A Flusberg
- Laboratory of Systems Pharmacology, Department of Systems Biology, Harvard Medical School, 200 Longwood Avenue, Boston, MA 02115, USA
| | - Peter K Sorger
- Laboratory of Systems Pharmacology, Department of Systems Biology, Harvard Medical School, 200 Longwood Avenue, Boston, MA 02115, USA.
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10
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Juraver-Geslin HA, Durand BC. Early development of the neural plate: new roles for apoptosis and for one of its main effectors caspase-3. Genesis 2015; 53:203-24. [PMID: 25619400 DOI: 10.1002/dvg.22844] [Citation(s) in RCA: 48] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2014] [Accepted: 01/07/2015] [Indexed: 12/12/2022]
Abstract
Despite its tremendous complexity, the vertebrate nervous system emerges from a homogenous layer of neuroepithelial cells, the neural plate. Its formation relies on the time- and space-controlled progression of developmental programs. Apoptosis is a biological process that removes superfluous and potentially dangerous cells and is implemented through the activation of a molecular pathway conserved during evolution. Apoptosis and an unconventional function of one of its main effectors, caspase-3, contribute to the patterning and growth of the neuroepithelium. Little is known about the intrinsic and extrinsic cues controlling activities of the apoptotic machinery during development. The BarH-like (Barhl) proteins are homeodomain-containing transcription factors. The observations in Caenorhabditis elegans, Xenopus, and mice document that Barhl proteins act in cell survival and as cell type-specific regulators of a caspase-3 function that limits neural progenitor proliferation. In this review, we discuss the roles and regulatory modes of the apoptotic machinery in the development of the neural plate. We focus on the Barhl2, the Sonic Hedgehog, and the Wnt pathways and their activities in neural progenitor survival and proliferation.
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Affiliation(s)
- Hugo A Juraver-Geslin
- Department of Basic Science, Craniofacial Biology, College of Dentistry, New York University, New York, New York
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11
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Tsai MY, Lu YF, Liu YH, Lien HW, Huang CJ, Wu JL, Hwang SPL. Modulation of p53 and met expression by Krüppel-like factor 8 regulates zebrafish cerebellar development. Dev Neurobiol 2014; 75:908-26. [PMID: 25528982 DOI: 10.1002/dneu.22258] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2014] [Revised: 12/04/2014] [Accepted: 12/15/2014] [Indexed: 12/20/2022]
Abstract
Krüppel-like factor 8 (Klf8) is a zinc-finger transcription factor implicated in cell proliferation, and cancer cell survival and invasion; however, little is known about its role in normal embryonic development. Here, we show that Klf8 is required for normal cerebellar development in zebrafish embryos. Morpholino knockdown of klf8 resulted in abnormal cerebellar primordium morphology and the induction of p53 in the brain region at 24 hours post-fertilization (hpf). Both p53-dependent reduction of cell proliferation and augmentation of apoptosis were observed in the cerebellar anlage of 24 hpf-klf8 morphants. In klf8 morphants, expression of ptf1a in the ventricular zone was decreased from 48 to 72 hpf; on the other hand, expression of atohla in the upper rhombic lip was unaffected. Consistent with this finding, Purkinje cell development was perturbed and granule cell number was reduced in 72 hpf-klf8 morphants; co-injection of p53 MO(sp) or klf8 mRNA substantially rescued development of cerebellar Purkinje cells in klf8 morphants. Hepatocyte growth factor/Met signaling is known to regulate cerebellar development in zebrafish and mouse. We observed decreased met expression in the tectum and rhombomere 1 of 24 hpf-klf8 morphants, which was largely rescued by co-injection with klf8 mRNA. Moreover, co-injection of met mRNA substantially rescued formation of Purkinje cells in klf8 morphants at 72 hpf. Together, these results demonstrate that Klf8 modulates expression of p53 and met to maintain ptf1a-expressing neuronal progenitors, which are required for the appropriate development of cerebellar Purkinje and granule cells in zebrafish embryos.
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Affiliation(s)
- Ming-Yuan Tsai
- Graduate Institute of Life Sciences, National Defense Medical Center, Neihu, Taipei, Taiwan, 114, Republic of China
| | - Yu-Fen Lu
- Institute of Cellular and Organismic Biology, Academia Sinica, Nankang, Taipei, Taiwan, 115, Republic of China
| | - Yu-Hsiu Liu
- Institute of Cellular and Organismic Biology, Academia Sinica, Nankang, Taipei, Taiwan, 115, Republic of China.,Institute of Zoology, National Taiwan University, Taipei, Taiwan, 10617, Republic of China
| | - Huang-Wei Lien
- Institute of Biological Chemistry, Academia Sinica, Nankang, Taipei, Taiwan, 115, Republic of China
| | - Chang-Jen Huang
- Graduate Institute of Life Sciences, National Defense Medical Center, Neihu, Taipei, Taiwan, 114, Republic of China.,Institute of Biological Chemistry, Academia Sinica, Nankang, Taipei, Taiwan, 115, Republic of China
| | - Jen-Leih Wu
- Institute of Cellular and Organismic Biology, Academia Sinica, Nankang, Taipei, Taiwan, 115, Republic of China
| | - Sheng-Ping L Hwang
- Graduate Institute of Life Sciences, National Defense Medical Center, Neihu, Taipei, Taiwan, 114, Republic of China.,Institute of Cellular and Organismic Biology, Academia Sinica, Nankang, Taipei, Taiwan, 115, Republic of China
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12
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Awan MUF, Deng Y. Role of autophagy and its significance in cellular homeostasis. Appl Microbiol Biotechnol 2014; 98:5319-28. [PMID: 24743981 DOI: 10.1007/s00253-014-5721-8] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2014] [Revised: 03/21/2014] [Accepted: 03/22/2014] [Indexed: 12/18/2022]
Abstract
Autophagy is a catabolic pathway that regulates homeostasis in cells. It is an exceptional pathway of membrane trafficking. Autophagy is characterized by the formation of double-membrane vesicles; autophagosomes that are responsible for delivering damaged organelle and extra proteins to lysosome for recycling. A series of actions including environmental and genetic factors are responsible for induction of autophagy. In the past few decades, the research on autophagy has been immensely expanded because it is a vital process in maintaining cellular balance as well as deeply connected with pathogenesis of a number of diseases. The aim of this review is to present an overview of modern work on autophagy and highlight some essential genetic role in the induction of autophagy. There is an emerging need to identify, quantify, and manipulate the pathway of autophagy, due to its close relationship with a variety of developmental pathways and functions especially in cancer, diabetes, neurodegenerative disorders, and infectious diseases.
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Affiliation(s)
- M Umer Farooq Awan
- School of Life Sciences, Beijing Institute of Technology, No. 5 Zhongguancunn South Street, Beijing, 100081, People's Republic of China
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13
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Ghavami S, Shojaei S, Yeganeh B, Ande SR, Jangamreddy JR, Mehrpour M, Christoffersson J, Chaabane W, Moghadam AR, Kashani HH, Hashemi M, Owji AA, Łos MJ. Autophagy and apoptosis dysfunction in neurodegenerative disorders. Prog Neurobiol 2013; 112:24-49. [PMID: 24211851 DOI: 10.1016/j.pneurobio.2013.10.004] [Citation(s) in RCA: 722] [Impact Index Per Article: 65.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2012] [Revised: 10/08/2013] [Accepted: 10/15/2013] [Indexed: 12/12/2022]
Abstract
Autophagy and apoptosis are basic physiologic processes contributing to the maintenance of cellular homeostasis. Autophagy encompasses pathways that target long-lived cytosolic proteins and damaged organelles. It involves a sequential set of events including double membrane formation, elongation, vesicle maturation and finally delivery of the targeted materials to the lysosome. Apoptotic cell death is best described through its morphology. It is characterized by cell rounding, membrane blebbing, cytoskeletal collapse, cytoplasmic condensation, and fragmentation, nuclear pyknosis, chromatin condensation/fragmentation, and formation of membrane-enveloped apoptotic bodies, that are rapidly phagocytosed by macrophages or neighboring cells. Neurodegenerative disorders are becoming increasingly prevalent, especially in the Western societies, with larger percentage of members living to an older age. They have to be seen not only as a health problem, but since they are care-intensive, they also carry a significant economic burden. Deregulation of autophagy plays a pivotal role in the etiology and/or progress of many of these diseases. Herein, we briefly review the latest findings that indicate the involvement of autophagy in neurodegenerative diseases. We provide a brief introduction to autophagy and apoptosis pathways focusing on the role of mitochondria and lysosomes. We then briefly highlight pathophysiology of common neurodegenerative disorders like Alzheimer's diseases, Parkinson's disease, Huntington's disease and Amyotrophic lateral sclerosis. Then, we describe functions of autophagy and apoptosis in brain homeostasis, especially in the context of the aforementioned disorders. Finally, we discuss different ways that autophagy and apoptosis modulation may be employed for therapeutic intervention during the maintenance of neurodegenerative disorders.
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Affiliation(s)
- Saeid Ghavami
- Department of Human Anatomy and Cell Science, University of Manitoba, Winnipeg, Canada; Manitoba Institute of Child Health, Department of Physiology, University of Manitoba, Winnipeg, Canada; St. Boniface Research Centre, University of Manitoba, Winnipeg, Canada
| | - Shahla Shojaei
- Department of Biochemistry, Recombinant Protein Laboratory, Medical School, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Behzad Yeganeh
- Manitoba Institute of Child Health, Department of Physiology, University of Manitoba, Winnipeg, Canada; Hospital for Sick Children Research Institute, Department of Physiology and Experimental Medicine, University of Toronto, Canada
| | - Sudharsana R Ande
- Department of Internal Medicine, University of Manitoba, Winnipeg, Canada
| | - Jaganmohan R Jangamreddy
- Department of Clinical and Experimental Medicine (IKE), Integrative Regenerative Medicine Center (IGEN), Division of Cell Biology, Linkoping University, Linkoping, Sweden
| | - Maryam Mehrpour
- INSERM U845, Research Center "Growth & Signaling" Paris Descartes University Medical School, France
| | - Jonas Christoffersson
- Department of Clinical and Experimental Medicine (IKE), Integrative Regenerative Medicine Center (IGEN), Division of Cell Biology, Linkoping University, Linkoping, Sweden
| | - Wiem Chaabane
- Department of Clinical and Experimental Medicine (IKE), Integrative Regenerative Medicine Center (IGEN), Division of Cell Biology, Linkoping University, Linkoping, Sweden; Department of Biology, Faculty of Sciences, Tunis University, Tunis, Tunisia
| | | | - Hessam H Kashani
- Department of Human Anatomy and Cell Science, University of Manitoba, Winnipeg, Canada; Manitoba Institute of Child Health, Department of Physiology, University of Manitoba, Winnipeg, Canada
| | - Mohammad Hashemi
- Department of Clinical Biochemistry, School of Medicine, Zahedan University of Medical Sciences, Zahedan, Iran; Cellular and Molecular Biology Research Center, Zahedan University of Medical Sciences, Zahedan, Iran
| | - Ali A Owji
- Department of Biochemistry, Recombinant Protein Laboratory, Medical School, Shiraz University of Medical Sciences, Shiraz, Iran.
| | - Marek J Łos
- Department of Clinical and Experimental Medicine (IKE), Integrative Regenerative Medicine Center (IGEN), Division of Cell Biology, Linkoping University, Linkoping, Sweden.
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14
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Hildreth RL, Bullough MD, Zhang A, Chen HL, Schwartz PH, Panchision DM, Colberg-Poley AM. Viral mitochondria-localized inhibitor of apoptosis (UL37 exon 1 protein) does not protect human neural precursor cells from human cytomegalovirus-induced cell death. J Gen Virol 2012; 93:2436-2446. [PMID: 22875256 DOI: 10.1099/vir.0.044784-0] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
Congenital human cytomegalovirus (HCMV) infection can cause severe brain abnormalities. Apoptotic HCMV-infected brain cells have been detected in a congenitally infected infant. In biologically relevant human neural precursor cells (hNPCs), cultured in physiological oxygen tensions, HCMV infection (m.o.i. of 1 or 3) induced cell death within 3 days post-infection (p.i.) and increased thereafter. Surprisingly, its known anti-apoptotic genes, including the potent UL37 exon 1 protein (pUL37x1) or viral mitochondria-localized inhibitor of apoptosis (vMIA), which protects infected human fibroblasts (HFFs) from apoptosis and from caspase-independent, mitochondrial serine protease-mediated cell death, were expressed by 2 days p.i. Consistent with this finding, an HCMV UL37x1 mutant, BADsubstitutionUL37x1 (BADsubUL37x1) induced cell death in hNPCs (m.o.i. = 1) to level which were indistinguishable from parental virus (BADwild-type)-infected hNPCs. Surprisingly, although BADsubUL37x1 is growth defective in permissive HFFs, it produced infectious progeny in hNPCs with similar kinetics and to levels comparable to BADwild-type-infected hNPCs (m.o.i. = 1). While delayed at a lower multiplicity (m.o.i. = 0.3), the BADsubUL37x1 mutant reached similar levels to revertant within 12 days, in contrast to its phenotype in HFFs. The inability of pUL37x1/vMIA to protect hNPCs from HCMV-induced cell death did not result from impaired trafficking as pUL37x1/vMIA trafficked efficiently to mitochondria in transfected hNPCs and in HCMV-infected hNPCs. These results establish that pUL37x1/vMIA, although protective in permissive HFFs, does not protect HCMV-infected hNPCs from cell death under physiologically relevant oxygen tensions. They further suggest that pUL37x1/vMIA is not essential for HCMV growth in hNPCs and has different cell type-specific roles.
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Affiliation(s)
- Richard L Hildreth
- Molecular Medicine Program, George Washington University, Washington, DC 20052, USA.,Research Center for Genetic Medicine, Children's Research Institute, Washington, DC 20010, USA
| | - Matthew D Bullough
- Research Center for Genetic Medicine, Children's Research Institute, Washington, DC 20010, USA
| | - Aiping Zhang
- Research Center for Genetic Medicine, Children's Research Institute, Washington, DC 20010, USA
| | - Hui-Ling Chen
- Center for Neuroscience Research, Children's Research Institute; Research Center for Genetic Medicine, Room M5110, Children's National Medical Center, 111 Michigan Ave, NW, Washington, DC 20010, USA
| | - Philip H Schwartz
- National Human Neural Stem Cell Resource, Children's Hospital of Orange County Research Institute, Orange, CA, USA
| | - David M Panchision
- Division of Neuroscience and Basic Behavioral Science, National Institutes of Mental Health, National Institutes of Health, Bethesda, MD, USA
| | - Anamaris M Colberg-Poley
- Molecular Medicine Program, George Washington University, Washington, DC 20052, USA.,Department of Biochemistry and Molecular Biology, George Washington University, USA.,Department of Integrative Systems Biology, George Washington University, USA.,Research Center for Genetic Medicine, Children's Research Institute, Washington, DC 20010, USA
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15
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Driving apoptosis-relevant proteins toward neural differentiation. Mol Neurobiol 2012; 46:316-31. [PMID: 22752662 DOI: 10.1007/s12035-012-8289-2] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2012] [Accepted: 06/05/2012] [Indexed: 01/12/2023]
Abstract
Emerging evidence suggests that apoptosis regulators and executioners may control cell fate, without involving cell death per se. Indeed, several conserved elements of apoptosis are integral components of terminal differentiation, which must be restrictively activated to assure differentiation efficiency, and carefully regulated to avoid cell loss. A better understanding of the molecular mechanisms underlying key checkpoints responsible for neural differentiation, as an alternative to cell death will surely make stem cells more suitable for neuro-replacement therapies. In this review, we summarize recent studies on the mechanisms underlying the non-apoptotic function of p53, caspases, and Bcl-2 family members during neural differentiation. In addition, we discuss how apoptosis-regulatory proteins control the decision between differentiation, self-renewal, and cell death in neural stem cells, and how activity is restrained to prevent cell loss.
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16
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Abstract
Calpains, a family of Ca(2+)-dependent cytosolic cysteine proteases, can modulate their substrates' structure and function through limited proteolytic activity. In the human genome, there are 15 calpain genes. The most-studied calpains, referred to as conventional calpains, are ubiquitous. While genetic studies in mice have improved our understanding about the conventional calpains' physiological functions, especially those essential for mammalian life as in embryogenesis, many reports have pointed to overactivated conventional calpains as an exacerbating factor in pathophysiological conditions such as cardiovascular diseases and muscular dystrophies. For treatment of these diseases, calpain inhibitors have always been considered as drug targets. Recent studies have introduced another aspect of calpains that calpain activity is required to protect the heart and skeletal muscle against stress. This review summarizes the functions and regulation of calpains, focusing on the relevance of calpains to cardiovascular disease.
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Affiliation(s)
- Hiroyuki Sorimachi
- Calpain Project, Department of Advanced Science for Biomolecules, Tokyo Metropolitan Institute of Medical Science, 2-1-6 Kamikitazawa, Setagaya-ku, Tokyo 156-8506, Japan.
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