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Kumar SK, Prakash T, Vetriselvan M, Mani KP. Trehalose protects the endothelium from cadmium-induced dysfunction. Cell Biol Int 2021; 45:957-964. [PMID: 33372726 DOI: 10.1002/cbin.11539] [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: 06/24/2020] [Revised: 12/16/2020] [Accepted: 12/25/2020] [Indexed: 11/11/2022]
Abstract
The objective of the present study is to identify the possible regulatory role of trehalose (Tre) against cadmium chloride (CdCl2 )-induced endothelial cell dysfunction. To screen the dose-dependent effect of both Tre and CdCl2 , a methylthiazolyldiphenyl-tetrazolium bromide (MTT) assay was performed. Interestingly, MTT assay results have shown that co-incubation of Tre (1 mM) with CdCl2 significantly decreased the CdCl2 (5 µM) cytotoxicity. Nitric oxide (NO) measurement using Griess assay and 4-amino-5-methylamino-2',7'-difluorofluorescein fluorescence probe results have shown that CdCl2 decreases NO production in endothelial cells. Western blotting analysis results showed that CdCl2 decreases endothelial nitric oxide synthase (eNOS) and phospho endothelial nitric oxide synthase (peNOS) expression. The present study results have also observed that CdCl2 treatment increases reactive oxygen species (ROS) production. However, combination treatment (Tre + CdCl2 ) could restore the NO production in CdCl2 -treated cells. In addition, combination treatment could also restore eNOS and peNOS expression in endothelial cells. Moreover, Tre treatment was found to decrease CdCl2 -induced ROS production. Collectively, the present study results demonstrate that Tre possesses a significant protective action against CdCl2 -mediated endothelial dysfunction by increasing NO production, eNOS and peNOS expression, and by decreasing oxidative stress.
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Affiliation(s)
- Sarwareddy K Kumar
- Vascular Research Laboratory, School of Chemical and Biotechnology, SASTRA Deemed University, Thanjavur, India
| | - Tarun Prakash
- Vascular Research Laboratory, School of Chemical and Biotechnology, SASTRA Deemed University, Thanjavur, India
| | - Miralini Vetriselvan
- Vascular Research Laboratory, School of Chemical and Biotechnology, SASTRA Deemed University, Thanjavur, India
| | - Krishna Priya Mani
- Vascular Research Laboratory, School of Chemical and Biotechnology, SASTRA Deemed University, Thanjavur, India
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Fan RF, Li ZF, Zhang D, Wang ZY. Involvement of Nrf2 and mitochondrial apoptotic signaling in trehalose protection against cadmium-induced kidney injury. Metallomics 2020; 12:2098-2107. [PMID: 33226392 DOI: 10.1039/d0mt00213e] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Cadmium (Cd) poisoning is characterized by multiple organ dysfunction in organisms, and the kidney is the main target organ of Cd toxicity. Trehalose (Tr), a multifunctional bioactive disaccharide, possesses potential kidney protective properties. Nevertheless, the specific biological function of Tr in antagonizing kidney injury induced by Cd remains to be elucidated. Herein, an in vivo model of Tr antagonizing Cd nephrotoxicity was established and the indictors related to kidney function, oxidative stress, and apoptosis were detected to investigate the molecular mechanism underlying the Tr-protection against Cd-induced kidney injury of rats. Firstly, Tr significantly declined the levels of blood urea nitrogen (BUN) and serum creatinine, and partially restored renal pathological changes caused by Cd. Secondly, Cd exposure significantly increased the malondialdehyde (MDA) content, and decreased the levels of total antioxidant capacity (T-AOC), superoxide dismutase (SOD), glutathione peroxidase (GPx), catalase (CAT), and glutathione (GSH) in serum. However, Tr significantly ameliorated these abnormal alterations. Moreover, Tr regulated the nuclear factor erythroid 2-related factor 2 (Nrf2) signaling pathway to suppress the Cd-induced nuclear translocation of Nrf2 and the up-regulation of heme oxygenase-1 (HO-1) and NAD (P) H quinone reductase-1 (NQO1). Meanwhile, Tr significantly reversed the increased Sequestosome-1(SQSTM1/p62) and decreased Kelch-like ECH associated protein-1 (Keap1) protein levels induced by Cd. Thirdly, further mechanistic exploration suggested that Tr inhibited the mitochondrial apoptotic signaling pathway induced by Cd. Collectively, the results indicated that Tr exerts antioxidant and anti-apoptosis functions involving the Nrf2 and mitochondrial apoptotic signaling pathways to protect against Cd-induced kidney injury in rats.
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Affiliation(s)
- Rui-Feng Fan
- College of Animal Science and Veterinary Medicine, Shandong Agricultural University, 61 Daizong Street, Tai'an City, Shandong Province 271018, China.
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Baghdadi V, Yari F, Nikougoftar M, Rafiee MH. Platelets Apoptosis and Clearance in The Presence of Sodium Octanoate during Storage of Platelet Concentrate at 4˚C. CELL JOURNAL 2019; 22:212-217. [PMID: 31721536 PMCID: PMC6874783 DOI: 10.22074/cellj.2020.6697] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/02/2019] [Accepted: 03/09/2019] [Indexed: 12/19/2022]
Abstract
Objective Platelet (PLT) storage at 4˚C has several benefits, however, it is accompanied by increased clearance of
PLTs after transfusion. In this study, we evaluated the potential of sodium octanoate (SO) for reducing apoptosis and
clearance rate of PLTs after long-term storage in cold.
Materials and Methods In this experimental study, PLT concentrates (PCs) were stored for 5 days under the following
three conditions: 20-24˚C, 4˚C, and 4˚C in the presence of SO. To measure the viability of PLTs, the water-soluble
tetrazolium salt (WST-1) assay was performed. Phosphatidylserine (PS) exposure was determined on PLTs using
flow cytometry technique. The amount of human active caspase-3 was determined in PLTs using an enzyme-linked
immunosorbent assay. Additionally, the amount of PLT ingestion or clearance was determined by using HepG2 cell line.
Results The viability was higher in the SO-treated PLTs compared to the other groups. The level of PS exposure
on PLTs was lower in the SO-treated PLTs compared to the other groups. The amount of active caspase-3 increased
in all groups during 5-day storage. The highest increase in the amount of caspase-3 levels was observed at cold
temperature. However, PLTs kept at 4˚C in the presence of SO had a lower amount of active caspase-3 compared to
PLTs kept at 4˚C. The amount of PLTs removal by HepG2 cells was increased for 4˚C-kept PLTs but it was lower for
PLTs kept at 4˚C in the presence of SO but, the differences were not significant (P>0.05).
Conclusion SO could partially moderate the effects of cold temperature on apoptosis and viability of platelets. It also
decreases the ingestion rate of long-time refrigerated PLTs in vitro. Further studies using higher numbers of samples
are required to demonstrate the effect of SO on reducing the clearance rate of PLTs.
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Affiliation(s)
- Vahid Baghdadi
- Blood Transfusion Research Center, High Institute for Research and Education in Transfusion Medicine, Tehran, Iran
| | - Fatemeh Yari
- Blood Transfusion Research Center, High Institute for Research and Education in Transfusion Medicine, Tehran, Iran. Elevtronic Address:
| | - Mahin Nikougoftar
- Blood Transfusion Research Center, High Institute for Research and Education in Transfusion Medicine, Tehran, Iran
| | - Mohammad Hessam Rafiee
- Blood Transfusion Research Center, High Institute for Research and Education in Transfusion Medicine, Tehran, Iran
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Scorer T, Williams A, Reddoch-Cardenas K, Mumford A. Manufacturing variables and hemostatic function of cold-stored platelets: a systematic review of the literature. Transfusion 2019; 59:2722-2732. [PMID: 31184775 DOI: 10.1111/trf.15396] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2019] [Revised: 05/09/2019] [Accepted: 05/11/2019] [Indexed: 01/09/2023]
Affiliation(s)
- Thomas Scorer
- School of Cellular and Molecular Medicine, University of Bristol, Bristol, United Kingdom.,Centre of Defence Pathology, RCDM, Birmingham, United Kingdom.,Coagulation and Blood Research, U.S. Army Institute of Surgical Research, JBSA Ft Sam Houston, San Antonio, Texas
| | - Ashleigh Williams
- Department of Anaesthesia, Derriford Hospital, Plymouth, United Kingdom
| | - Kristin Reddoch-Cardenas
- Coagulation and Blood Research, U.S. Army Institute of Surgical Research, JBSA Ft Sam Houston, San Antonio, Texas
| | - Andrew Mumford
- School of Cellular and Molecular Medicine, University of Bristol, Bristol, United Kingdom
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Siddon AJ, Tormey CA, Snyder EL. Platelet Transfusion Medicine. Platelets 2019. [DOI: 10.1016/b978-0-12-813456-6.00064-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Wang XY, Yang H, Wang MG, Yang DB, Wang ZY, Wang L. Trehalose protects against cadmium-induced cytotoxicity in primary rat proximal tubular cells via inhibiting apoptosis and restoring autophagic flux. Cell Death Dis 2017; 8:e3099. [PMID: 29022917 PMCID: PMC5682644 DOI: 10.1038/cddis.2017.475] [Citation(s) in RCA: 103] [Impact Index Per Article: 14.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2017] [Revised: 08/16/2017] [Accepted: 08/23/2017] [Indexed: 02/06/2023]
Abstract
Autophagy has an important renoprotective function and we recently found that autophagy inhibition is involved in cadmium (Cd)-induced nephrotoxicity. Here, we aimed to investigate the protective effect of trehalose (Tre), a novel autophagy activator, against Cd-induced cytotoxicity in primary rat proximal tubular (rPT) cells. First, data showed that Tre treatment significantly decreased Cd-induced apoptotic cell death of rPT cells via inhibiting caspase-dependent apoptotic pathway, evidenced by morphological analysis, flow cytometric and immunoblot assays. Also, administration with Tre protected rPT cells against Cd-induced lipid peroxidation. Inhibition of autophagic flux in Cd-exposed rPT cells was markedly restored by Tre administration, demonstrated by immunoblot analysis of autophagy marker proteins and GFP and RFP tandemly tagged LC3 method. Resultantly, Cd-induced autophagosome accumulation was obviously alleviated by Tre treatment. Meanwhile, blockage of autophagosome-lysosome fusion by Cd exposure was noticeably restored by Tre, which promoted the autophagic degradation in Cd-exposed rPT cells. Moreover, Tre treatment markedly recovered Cd-induced lysosomal alkalinization and impairment of lysosomal degradation capacity in rPT cells, demonstrating that Tre has the ability to restore Cd-impaired lysosomal function. Collectively, these findings demonstrate that Tre treatment alleviates Cd-induced cytotoxicity in rPT cells by inhibiting apoptosis and restoring autophagic flux.
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Affiliation(s)
- Xin-Yu Wang
- College of Animal Science and Veterinary Medicine, Shandong Agricultural University, 61 Daizong Street, Tai’an City 271018, China
- Shandong Provincial Key Laboratory of Animal Biotechnology and Disease Control and Prevention, Shandong Agricultural University, 61 Daizong Street, Tai’an City 271018, China
- Shandong Provincial Engineering Technology Research Center of Animal Disease Control and Prevention, Shandong Agricultural University, 61 Daizong Street, Tai’an City 271018, China
| | - Heng Yang
- College of Animal Science and Veterinary Medicine, Shandong Agricultural University, 61 Daizong Street, Tai’an City 271018, China
- Shandong Provincial Key Laboratory of Animal Biotechnology and Disease Control and Prevention, Shandong Agricultural University, 61 Daizong Street, Tai’an City 271018, China
- Shandong Provincial Engineering Technology Research Center of Animal Disease Control and Prevention, Shandong Agricultural University, 61 Daizong Street, Tai’an City 271018, China
| | - Min-Ge Wang
- College of Animal Science and Veterinary Medicine, Shandong Agricultural University, 61 Daizong Street, Tai’an City 271018, China
- Shandong Provincial Key Laboratory of Animal Biotechnology and Disease Control and Prevention, Shandong Agricultural University, 61 Daizong Street, Tai’an City 271018, China
- Shandong Provincial Engineering Technology Research Center of Animal Disease Control and Prevention, Shandong Agricultural University, 61 Daizong Street, Tai’an City 271018, China
| | - Du-Bao Yang
- College of Animal Science and Veterinary Medicine, Shandong Agricultural University, 61 Daizong Street, Tai’an City 271018, China
- Shandong Provincial Key Laboratory of Animal Biotechnology and Disease Control and Prevention, Shandong Agricultural University, 61 Daizong Street, Tai’an City 271018, China
- Shandong Provincial Engineering Technology Research Center of Animal Disease Control and Prevention, Shandong Agricultural University, 61 Daizong Street, Tai’an City 271018, China
| | - Zhen-Yong Wang
- College of Animal Science and Veterinary Medicine, Shandong Agricultural University, 61 Daizong Street, Tai’an City 271018, China
- Shandong Provincial Key Laboratory of Animal Biotechnology and Disease Control and Prevention, Shandong Agricultural University, 61 Daizong Street, Tai’an City 271018, China
- Shandong Provincial Engineering Technology Research Center of Animal Disease Control and Prevention, Shandong Agricultural University, 61 Daizong Street, Tai’an City 271018, China
| | - Lin Wang
- College of Animal Science and Veterinary Medicine, Shandong Agricultural University, 61 Daizong Street, Tai’an City 271018, China
- Shandong Provincial Key Laboratory of Animal Biotechnology and Disease Control and Prevention, Shandong Agricultural University, 61 Daizong Street, Tai’an City 271018, China
- Shandong Provincial Engineering Technology Research Center of Animal Disease Control and Prevention, Shandong Agricultural University, 61 Daizong Street, Tai’an City 271018, China
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Wood B, Padula MP, Marks DC, Johnson L. Refrigerated storage of platelets initiates changes in platelet surface marker expression and localization of intracellular proteins. Transfusion 2016; 56:2548-2559. [PMID: 27460096 DOI: 10.1111/trf.13723] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2016] [Revised: 05/18/2016] [Accepted: 06/01/2016] [Indexed: 12/30/2022]
Abstract
BACKGROUND Platelets (PLTs) are currently stored at room temperature (22°C), which limits their shelf life, primarily due to the risk of bacterial growth. Alternatives to room temperature storage include PLT refrigeration (2-6°C), which inhibits bacterial growth, thus potentially allowing an extension of shelf life. Additionally, refrigerated PLTs appear more hemostatically active than conventional PLTs, which may be beneficial in certain clinical situations. However, the mechanisms responsible for this hemostatic function are not well characterized. The aim of this study was to assess the protein profile of refrigerated PLTs in an effort to understand these functional consequences. STUDY DESIGN AND METHODS Buffy coat PLTs were pooled, split, and stored either at room temperature (20-24°C) or under refrigerated (2-6°C) conditions (n = 8 in each group). PLTs were assessed for changes in external receptor expression and actin filamentation using flow cytometry. Intracellular proteomic changes were assessed using two-dimensional gel electrophoresis and Western blotting. RESULTS PLT refrigeration significantly reduced the abundance of glycoproteins (GPIb, GPIX, GPIIb, and GPIV) on the external membrane. However, refrigeration resulted in the increased expression of high-affinity integrins (αIIbβ3 and β1) and activation and apoptosis markers (CD62P, CD63, and phosphatidylserine). PLT refrigeration substantially altered the abundance and localization of several cytoskeletal proteins and resulted in an increase in actin filamentation, as measured by phalloidin staining. CONCLUSION Refrigerated storage of PLTs induces significant changes in the expression and localization of both surface-expressed and intracellular proteins. Understanding these proteomic changes may help to identify the mechanisms resulting in the refrigeration-associated alterations in PLT function and clearance.
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Affiliation(s)
- Ben Wood
- Research & Development, Australian Red Cross Blood Service, Alexandria, NSW, Australia.,Proteomics Core Facility, University of Technology Sydney, Sydney, NSW, Australia
| | - Matthew P Padula
- Proteomics Core Facility, University of Technology Sydney, Sydney, NSW, Australia
| | - Denese C Marks
- Research & Development, Australian Red Cross Blood Service, Alexandria, NSW, Australia
| | - Lacey Johnson
- Research & Development, Australian Red Cross Blood Service, Alexandria, NSW, Australia.
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Successful cryopreservation of whole sheep ovary by using DMSO-free cryoprotectant. J Assist Reprod Genet 2015; 32:1267-75. [PMID: 26089084 DOI: 10.1007/s10815-015-0513-3] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2015] [Accepted: 06/05/2015] [Indexed: 02/01/2023] Open
Abstract
PURPOSE The study aims to assess the protective effects of dimethyl sulfoxide (DMSO)-free solution based on trehalose on the cryopreservation of a whole sheep ovary and evaluate its use as an efficient cryoprotectant. METHOD Twenty-one ovaries collected from 6- to 8-month-old non-pregnant female sheep were randomly distributed into three groups, namely, a fresh group, a DMSO-free group, and a DMSO group. The morphology, cell apoptosis (by hematoxylin and eosin (HE) staining and terminal deoxynucleotidyltransferase-mediated dUTP nick-end labeling (TUNEL) assay), and mRNA transcript of Bcl-2-associated X protein (BAX) and cold inducible RNA-binding protein (CIRP) (by real-time PCR) of the thawed sheep ovaries and fresh controls were tested to establish a criterion for appraising the results of the cryopreservation. RESULTS (i) The histological assessment indicated that the structure of the DMSO-free ovaries remained largely intact and comparable to those of the fresh control groups; whereas, significant damage was observed in the ovaries of the DMSO group (P < 0.05). (ii) The TUNEL assay and mRNA transcript of the BAX assessment showed that the apoptosis parameter in the fresh group was the lowest among all the groups (P < 0.05), and the parameter in the DMSO-free group was significantly lower than that in the DMSO group (P < 0.05). (iii) The level of the CIRP transcripts increased the most in the DMSO-free group followed by the DMSO group and the fresh control group (P < 0.05). CONCLUSIONS These results indicate that a DMSO-free cryoprotectant solution, especially a trehalose cryoprotectant, is an efficient cryoprotectant and has a beneficial effect on the cryopreservation of whole sheep ovaries.
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Platelet Transfusion Medicine. Platelets 2013. [DOI: 10.1016/b978-0-12-387837-3.00062-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/18/2023]
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van der Wal DE, Gitz E, Du VX, Lo KSL, Koekman CA, Versteeg S, Akkerman JWN. Arachidonic acid depletion extends survival of cold-stored platelets by interfering with the [glycoprotein Ibα--14-3-3ζ] association. Haematologica 2012; 97:1514-22. [PMID: 22371179 DOI: 10.3324/haematol.2011.059956] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
Abstract
BACKGROUND Cold storage of platelets reduces bacterial growth and preserves their hemostatic properties better than current procedures do. However, storage at 0°C induces [14-3-3ζ-glycoprotein Ibα] association, 14-3-3ζ release from phospho-Bad, Bad activation and apoptosis. DESIGN AND METHODS We investigated whether arachidonic acid, which also binds 14-3-3ζ, contributes to coldinduced apoptosis. RESULTS Cold storage activated P38-mitogen-activated protein kinase and released arachidonic acid, which accumulated due to cold inactivation of cyclooxygenase-1/thromboxane synthase. Accumulated arachidonic acid released 14-3-3ζ from phospho-Bad and decreased the mitochondrial membrane potential, which are steps in the induction of apoptosis. Addition of arachidonic acid did the same and its depletion made platelets resistant to cold-induced apoptosis. Incubation with biotin-arachidonic acid revealed formation of an [arachidonic acid-14-3-3ζ-glycoprotein Ibα] complex. Indomethacin promoted complex formation by accumulating arachidonic acid and released 14-3-3ζ from cyclo-oxygenase-1. Arachidonic acid depletion prevented the cold-induced reduction of platelet survival in mice. CONCLUSIONS We conclude that cold storage induced apoptosis through an [arachidonic acid-14-3-3ζ-glycoprotein Ibα] complex, which released 14-3-3ζ from Bad in an arachidonic acid-dependent manner. Although arachidonic acid depletion reduced agonist-induced thromboxane A(2) formation and aggregation, arachidonic acid repletion restored these functions, opening ways to reduce apoptosis during storage without compromising hemostatic functions post-transfusion.
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Affiliation(s)
- Dianne E van der Wal
- Department of Clinical Chemistry and Haematology, University Medical Center Utrecht, Utrecht, the Netherlands
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Abstract
For many years, programmed cell death, known as apoptosis, was attributed exclusively to nucleated cells. Currently, however, apoptosis is also well-documented in anucleate platelets. This review describes extrinsic and intrinsic pathways of apoptosis in nucleated cells and in platelets, platelet apoptosis induced by multiple chemical stimuli and shear stresses, markers of platelet apoptosis, mitochodrial control of platelet apoptosis, and apoptosis mediated by platelet surface receptors PAR-1, GPIIbIIIa and GPIbα. In addition, this review presents data on platelet apoptosis provoked by aging of platelets in vitro during platelet storage, platelet apoptosis in pathological settings in humans and animal models, and inhibition of platelet apoptosis by cyclosporin A, intravenous immunoglobulin and GPIIbIIIa antagonist drugs.
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Affiliation(s)
- Valery Leytin
- Division of Transfusion Medicine, Department of Laboratory Medicine, The Keenan Research Centre in the Li Ka Shing Knowledge Institute of St. Michael's Hospital, Toronto, ON, Canada.
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Lack of trehalose accelerates H2O2-induced Candida albicans apoptosis through regulating Ca2+ signaling pathway and caspase activity. PLoS One 2011; 6:e15808. [PMID: 21246042 PMCID: PMC3016397 DOI: 10.1371/journal.pone.0015808] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2010] [Accepted: 11/23/2010] [Indexed: 11/19/2022] Open
Abstract
Trehalose is a non-reducing disaccharide and can be accumulated in response to heat or oxidative stresses in Candida albicans. Here we showed that a C. albicans tps1Δ mutant, which is deficient in trehalose synthesis, exhibited increased apoptosis rate upon H(2)O(2) treatment together with an increase of intracellular Ca(2+) level and caspase activity. When the intracellular Ca(2+) level was stimulated by adding CaCl(2) or A23187, both the apoptosis rate and caspase activity were increased. In contrast, the presence of two calcium chelators, EGTA and BAPTA, could attenuate these effects. Moreover, we investigated the role of Ca(2+) pathway in C. albicans apoptosis and found that both calcineurin and the calcineurin-dependent transcription factor, Crz1p, mutants showed decreased apoptosis and caspase activity upon H(2)O(2) treatment compared to the wild-type cells. Expression of CaMCA1, the only gene found encoding a C. albicans metacaspase, in calcineurin-deleted or Crz1p-deleted cells restored the cell sensitivity to H(2)O(2). Our results suggest that Ca(2+) and its downstream calcineurin/Crz1p/CaMCA1 pathway are involved in H(2)O(2)-induced C. albicans apoptosis. Inhibition of this pathway might be the mechanism for the protective role of trehalose in C. albicans.
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Fernandez O, Béthencourt L, Quero A, Sangwan RS, Clément C. Trehalose and plant stress responses: friend or foe? TRENDS IN PLANT SCIENCE 2010; 15:409-17. [PMID: 20494608 DOI: 10.1016/j.tplants.2010.04.004] [Citation(s) in RCA: 205] [Impact Index Per Article: 14.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/12/2010] [Revised: 04/06/2010] [Accepted: 04/22/2010] [Indexed: 05/18/2023]
Abstract
The disaccharide trehalose is involved in stress response in many organisms. However, in plants, its precise role remains unclear, although some data indicate that trehalose has a protective role during abiotic stresses. By contrast, some trehalose metabolism mutants exhibit growth aberrations, revealing potential negative effects on plant physiology. Contradictory effects also appear under biotic stress conditions. Specifically, trehalose is essential for the infectivity of several pathogens but at the same time elicits plant defense. Here, we argue that trehalose should not be regarded only as a protective sugar but rather like a double-faced molecule and that further investigation is required to elucidate its exact role in stress tolerance in plants.
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Affiliation(s)
- Olivier Fernandez
- Université de Reims Champagne Ardenne, Unité de Recherche Vignes et Vins de Champagne - Stress et Environnement (EA 2069), UFR Sciences Exactes et Naturelles, BP 1039, 51687 Reims Cedex 2, France
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