1
|
Turki F, Ben Younes R, Sakly M, Ben Rhouma K, Martinez-Guitarte JL, Amara S. Effect of silver nanoparticles on gene transcription of land snail Helix aspersa. Sci Rep 2022; 12:2078. [PMID: 35136168 PMCID: PMC8826417 DOI: 10.1038/s41598-022-06090-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2021] [Accepted: 01/24/2022] [Indexed: 11/09/2022] Open
Abstract
Silver nanoparticles (Ag-NPs) are extremely useful in a diverse range of consumer goods. However, their impact on the environment is still under research, especially regarding the mechanisms involved in their effect. Aiming to provide some insight, the present work analyzes the transcriptional activity of six genes (Hsp83, Hsp17.2, Hsp19.8, SOD Cu-Zn, Mn-SOD, and BPI) in the terrestrial snail Helix aspersa in the presence of different concentrations of Ag-NPs. The animals were exposed for seven days to Lactuca sativa soaked for one hour in different concentrations of Ag-NPs (20, 50, 100 mg/L). The results revealed that the highest concentration tested of Ag-NPs (100 mg/L) led to a statistically significant induction of the Hsp83 and BPI expression in the digestive gland compared to the control group. However, a trend to upregulation with no statistical significance was observed for all the genes in the digestive gland and the foot, while in the hemolymph, the trend was to downregulation. Ag-NPs affected the stress response and immunity under the tested conditions, although the impact was weak. It is necessary to explore longer exposure times to confirm that the effect can be maintained and impact on health. Our results highlight the usefulness of the terrestrial snail Helix aspersa as a bioindicator organism for silver nanoparticle pollution biomonitoring and, in particular, the use of molecular biomarkers of pollutant effect as candidates to be included in a multi-biomarker strategy.
Collapse
Affiliation(s)
- Faten Turki
- Laboratory of Integrative Physiology, Faculty of Sciences of Bizerte, University of Carthage, 7021, Jarzouna, Tunisia
| | - Ridha Ben Younes
- Research Unit of Immuno-Microbiology Environmental and Carcinogenesis, Sciences Faculty of Bizerte, University of Carthage, Bizerte, Tunisia
| | - Mohsen Sakly
- Laboratory of Integrative Physiology, Faculty of Sciences of Bizerte, University of Carthage, 7021, Jarzouna, Tunisia
| | - Khemais Ben Rhouma
- Laboratory of Integrative Physiology, Faculty of Sciences of Bizerte, University of Carthage, 7021, Jarzouna, Tunisia
| | - José-Luis Martinez-Guitarte
- Grupo de Biología y Toxicología Ambiental, Departamento de Física Matemática y de Fluidos, Facultad de Ciencias, UNED, c/ Paseo de la Senda del Rey 9, 28040, Madrid, Spain.
| | - Salem Amara
- Laboratory of Integrative Physiology, Faculty of Sciences of Bizerte, University of Carthage, 7021, Jarzouna, Tunisia
- Department of Natural and Applied Sciences in Afif, Faculty of Sciences and Humanities, Shaqra University, Afif, 11921, Saudi Arabia
| |
Collapse
|
2
|
Pan H, Zhao F, Yang Y, Chang N. Overexpression of long non-coding RNA SNHG16 against cerebral ischemia-reperfusion injury through miR-106b-5p/LIMK1 axis. Life Sci 2020; 254:117778. [PMID: 32407850 DOI: 10.1016/j.lfs.2020.117778] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2019] [Revised: 04/19/2020] [Accepted: 05/09/2020] [Indexed: 11/18/2022]
Abstract
Long non-coding RNA (LncRNA) involved in types of physiological insults and diseases via regulating the responses of complex molecular, including cerebral ischemia-reperfusion (I/R) injury. LncRNA SNHG16 played a potential role in ketamine-induced neurotoxicity. In this study, we utilized an in vitro cell model of I/R to examine the specific function and mechanism of LncRNA SNHG16 in oxygen-glucose deprivation and reperfusion (OGD/R) induced SH-SY5Y cells. After in vitro treatment of OGD/R, the lower the SH-SY5Y cell survival, the higher cell the apoptosis and increased caspase-3 activity was observed. Also, OGD/R induced endoplasmic reticulum stress (ERS) through increasing GRP78 and CHOP expressions and down-regulated LncRNA SNHG16 in SH-SY5Y cells. Conversely, LncRNA SNHG16 overexpression promoted OGD/R induced SH-SY5Y cell survival, suppressed its apoptosis, and caspase-3 activity. GRP78 and CHOP expressions were significantly suppressed in LncRNA SNHG16 overexpressing cells. MiR-106b-5p expression was increased and LIMK1 expression was down-regulated in OGD/R induced SH-SY5Y cells, and these effects were reversed by LncRNA SNHG16 overexpression, respectively. Moreover, LIMK1 is a direct target of MiR-106b-5p, and knockdown of LIMK1 reversed the effects of LncRNA SNHG16 on OGD/R-induced SH-SY5Y cells biology. Altogether, these results confirmed an important neuroprotection role of LncRNA SNHG16 in OGD/R induced SH-SY5Y cells injury, and miR-106b-5p/LIMK1 signal axis was involved in the action of LncRNA SNHG16.
Collapse
Affiliation(s)
- Haojun Pan
- Department of Neurology, Huaihe Hospital of Henan University, Kaifeng 475000, Henan province, China
| | - Fangfang Zhao
- Department of Neurology, Huaihe Hospital of Henan University, Kaifeng 475000, Henan province, China
| | - Yanmin Yang
- Department of Neurology, Huaihe Hospital of Henan University, Kaifeng 475000, Henan province, China
| | - Na Chang
- Department of Neurology, Huaihe Hospital of Henan University, Kaifeng 475000, Henan province, China..
| |
Collapse
|
3
|
Hong Y, Huang Y, Huang Z. Oxidative stress, immunological response, and heat shock proteins induction in the Chinese Mitten Crab, Eriocheir sinensis following avermectin exposure. Environ Toxicol 2020; 35:213-222. [PMID: 31617668 DOI: 10.1002/tox.22858] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/13/2019] [Revised: 09/19/2019] [Accepted: 09/29/2019] [Indexed: 06/10/2023]
Abstract
In this study, the Chinese mitten crabs, Eriocheir sinensis were exposed to avermectin at 0.03, 0.06, 0.12, 0.24, and 0.48 mg/L respectively for 96 hours. The results showed that levels of superoxide dismutase, catalase, and glutathione peroxidase in hepatopancreas were slightly induced at concentration of 0.03 and 0.06 mg/L, but significantly (P < .05) decreased at higher concentrations, meanwhile similar trend of the activities of acid phosphatase, alkaline phosphatase and lysozyme were observed. Significant induction of HSP70 and HSP90 mRNA expression was detected at 24 hours whereas no significant change was found in HSP60. In addition, levels of reactive oxygen species in hepatocytes increased in dose- and time- dependent manners, and cell viabilities of hepatocytes and haemocytes decreased. These results indicated that sublethal concentration exposure of avermectin had a prominent oxidative stress effect on E. sinensis based on the antioxidative and immunological activity inhibition, and HSP60, 70, and 90 perform a protective response during the exposure.
Collapse
Affiliation(s)
- Yuhang Hong
- Key Laboratory of Animal Disease Detection and Prevention in Panxi District, Xichang University, Xichang, Sichuan Province, China
| | - Yi Huang
- Key Laboratory of Animal Disease Detection and Prevention in Panxi District, Xichang University, Xichang, Sichuan Province, China
| | - Zhiqiu Huang
- Key Laboratory of Animal Disease Detection and Prevention in Panxi District, Xichang University, Xichang, Sichuan Province, China
| |
Collapse
|
4
|
How CM, Yen PL, Wei CC, Li SW, Liao VHC. Early life exposure to di(2-ethylhexyl)phthalate causes age-related declines associated with insulin/IGF-1-like signaling pathway and SKN-1 in Caenorhabditis elegans. Environ Pollut 2019; 251:871-878. [PMID: 31234252 DOI: 10.1016/j.envpol.2019.04.141] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/19/2019] [Revised: 04/30/2019] [Accepted: 04/30/2019] [Indexed: 06/09/2023]
Abstract
Di(2-ethylhexyl)phthalate (DEHP) is an ubiquitous and emerging contaminant that is widely present in food, agricultural crop, and the environment, posing a potential risk to human health. This study utilized the nematode Caenorhabditis elegans to decipher the toxic effects of early life exposure to DEHP on aging and its underlying mechanisms. The results showed that exposure to DEHP at 0.1 and 1.5 mg/L inhibited locomotive behaviors. In addition, DEHP exposure significantly shortened the mean lifespan of the worms and further adversely affected pharyngeal pumping rate and defecation cycle in aged worms. Moreover, DEHP exposure also further enhanced accumulation of age-related biomarkers including lipofuscin, lipid peroxidation, and intracellular reactive oxygen species in aged worms. In addition, exposure to DEHP significantly suppressed gene expression of hsp-16.1, hsp-16.49, and hsp-70 in aged worms. Further evidences showed that mutation of genes involved in insulin/IGF-1-like signaling (IIS) pathway (daf-2, age-1, pdk-1, akt-1, akt-2, and daf-16) restored lipid peroxidation accumulation upon DEHP exposure in aged worms, whereas skn-1 mutation resulted in enhanced lipid peroxidation accumulation. Therefore, IIS and SKN-1 may serve as an important molecular basis for DEHP-induced age-related declines in C. elegans. Since IIS and SKN-1 are highly conserved among species, the age-related declines caused by DEHP exposure may not be exclusive in C. elegans, leading to adverse human health consequences due to widespread and persistent DEHP contamination in the environment.
Collapse
Affiliation(s)
- Chun Ming How
- Department of Bioenvironmental Systems Engineering, National Taiwan University, Taipei, 106, Taiwan
| | - Pei-Ling Yen
- Department of Bioenvironmental Systems Engineering, National Taiwan University, Taipei, 106, Taiwan
| | - Chia-Cheng Wei
- Department of Bioenvironmental Systems Engineering, National Taiwan University, Taipei, 106, Taiwan
| | - Shang-Wei Li
- Department of Bioenvironmental Systems Engineering, National Taiwan University, Taipei, 106, Taiwan
| | - Vivian Hsiu-Chuan Liao
- Department of Bioenvironmental Systems Engineering, National Taiwan University, Taipei, 106, Taiwan.
| |
Collapse
|
5
|
Sleight VA, Peck LS, Dyrynda EA, Smith VJ, Clark MS. Cellular stress responses to chronic heat shock and shell damage in temperate Mya truncata. Cell Stress Chaperones 2018; 23:1003-1017. [PMID: 29754331 PMCID: PMC6111077 DOI: 10.1007/s12192-018-0910-5] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2018] [Revised: 04/06/2018] [Accepted: 05/01/2018] [Indexed: 12/21/2022] Open
Abstract
Acclimation, via phenotypic flexibility, is a potential means for a fast response to climate change. Understanding the molecular mechanisms underpinning phenotypic flexibility can provide a fine-scale cellular understanding of how organisms acclimate. In the last 30 years, Mya truncata populations around the UK have faced an average increase in sea surface temperature of 0.7 °C and further warming of between 1.5 and 4 °C, in all marine regions adjacent to the UK, is predicted by the end of the century. Hence, data are required on the ability of M. truncata to acclimate to physiological stresses, and most notably, chronic increases in temperature. Animals in the present study were exposed to chronic heat-stress for 2 months prior to shell damage and subsequently, only 3, out of 20 damaged individuals, were able to repair their shells within 2 weeks. Differentially expressed genes (between control and damaged animals) were functionally enriched with processes relating to cellular stress, the immune response and biomineralisation. Comparative transcriptomics highlighted genes, and more broadly molecular mechanisms, that are likely to be pivotal in this lack of acclimation. This study demonstrates that discovery-led transcriptomic profiling of animals during stress-response experiments can shed light on the complexity of biological processes and changes within organisms that can be more difficult to detect at higher levels of biological organisation.
Collapse
Affiliation(s)
- Victoria A Sleight
- Department of Zoology, University of Cambridge, Downing Street, Cambridge, CB2 3EJ, UK.
- British Antarctic Survey, Natural Environment Research Council (NERC), High Cross, Madingley Road, Cambridge, CB3 0ET, UK.
| | - Lloyd S Peck
- British Antarctic Survey, Natural Environment Research Council (NERC), High Cross, Madingley Road, Cambridge, CB3 0ET, UK
| | - Elisabeth A Dyrynda
- Centre for Marine Biodiversity & Biotechnology, Institute of Life & Earth Sciences, Heriot-Watt University, Edinburgh, EH14 4AS, UK
| | - Valerie J Smith
- Scottish Oceans Institute, School of Biology, University of St Andrews, St Andrews, Fife, KY16 8LB, UK
| | - Melody S Clark
- British Antarctic Survey, Natural Environment Research Council (NERC), High Cross, Madingley Road, Cambridge, CB3 0ET, UK
| |
Collapse
|
6
|
Lebeau P, Byun JH, Yousof T, Austin RC. Pharmacologic inhibition of S1P attenuates ATF6 expression, causes ER stress and contributes to apoptotic cell death. Toxicol Appl Pharmacol 2018; 349:1-7. [PMID: 29689241 DOI: 10.1016/j.taap.2018.04.020] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2017] [Revised: 04/12/2018] [Accepted: 04/16/2018] [Indexed: 02/05/2023]
Abstract
Mammalian cells express unique transcription factors embedded in the endoplasmic reticulum (ER) membrane, such as the sterol regulatory element-binding proteins (SREBPs), that promote de novo lipogenesis. Upon their release from the ER, the SREBPs require proteolytic activation in the Golgi by site-1-protease (S1P). As such, inhibition of S1P, using compounds such as PF-429242 (PF), reduces cholesterol synthesis and may represent a new strategy for the management of dyslipidemia. In addition to the SREBPs, the unfolded protein response (UPR) transducer, known as the activating transcription factor 6 (ATF6), is another ER membrane-bound transcription factor that requires S1P-mediated activation. ATF6 regulates ER protein folding capacity by promoting the expression of ER chaperones such as the 78-kDa glucose-regulated protein (GRP78). ER-resident chaperones like GRP78 prevent and/or resolve ER polypeptide accumulation and subsequent ER stress-induced UPR activation by folding nascent polypeptides. Here we report that pharmacological inhibition of S1P reduced the expression of ATF6 and GRP78 and induced the activation of UPR transducers inositol-requiring enzyme-1α (IRE1α) and protein kinase RNA-like ER kinase (PERK). As a consequence, S1P inhibition also increased the susceptibility of cells to ER stress-induced cell death. Our findings suggest that S1P plays a crucial role in the regulation of ER folding capacity and also identifies a compensatory cross-talk between UPR transducers in order to maintain adequate ER chaperone expression and activity.
Collapse
Affiliation(s)
- Paul Lebeau
- Department of Medicine, Division of Nephrology, McMaster University, St. Joseph's Healthcare Hamilton, Hamilton Centre for Kidney Research, Hamilton, Ontario L8N 4A6, Canada
| | - Jae Hyun Byun
- Department of Medicine, Division of Nephrology, McMaster University, St. Joseph's Healthcare Hamilton, Hamilton Centre for Kidney Research, Hamilton, Ontario L8N 4A6, Canada
| | - Tamana Yousof
- Department of Medicine, Division of Nephrology, McMaster University, St. Joseph's Healthcare Hamilton, Hamilton Centre for Kidney Research, Hamilton, Ontario L8N 4A6, Canada
| | - Richard C Austin
- Department of Medicine, Division of Nephrology, McMaster University, St. Joseph's Healthcare Hamilton, Hamilton Centre for Kidney Research, Hamilton, Ontario L8N 4A6, Canada.
| |
Collapse
|
7
|
Abstract
The induction of stress proteins was studied in two human and two murine melanoma cell lines. Exposure for 1 h to heat (42 °C), to ethanol (6%), to arsenate (100 μM) and to disulfiram (50 μM) induced the expression of SPs with apparent molecular weights of 100, 86, 70-72 and 24-26 Kd. Quantitation of the single SPs indicated that the basal level as well as the enhanced synthesis following the various stressors were different in each cell line. The induction of the 100 Kd species occurred in only one murine melanoma and not in the others. The 86 and in particular the 70-72 Kd species were the most prominent groups, whereas the 24-26 SPs were induced only following arsenate and disulfiram exposure in the three melanoma cell lines. In one of the murine melanomas, the expression of SPs was markedly reduced compared to the other cell lines. No definite specific patterns of SP expression could be identified in tumors of the same histologic type.
Collapse
|
8
|
Abstract
Two human melanoma cell lines, largely different from one another in their intrinsic thermosensitivity, were exposed to supranormal temperatures and labeled with 35S-methionine. The protein patterns resolved by SDS-polyacrylamide gel electrophoresis showed in both cell lines an increased synthesis of a unique set of heat shock proteins (HSP) of 72 Kdalton (KD). Already evident after 15 min at 42 °C, the relative rate of synthesis of these HSP increased progressively for up to 3 h of continous heat treatment. The cells exposed for 1 h at 42 °C and then returned to 37 °C maintained a high relative rate of HSP synthesis for more than 6 h. The rate of decay of the neosynthesized HSP did not differ from that of the overall cell proteins. Since in both cell lines all the parameters concerning HSP induction were identical, no correlation can be established between their intrinsic sensitivity towards the conditioning treatment and the capacity to respond to heat treatment with an increased synthesis of these proteins.
Collapse
|
9
|
Schiaffonati L, Bardella L, Cairo G, Rappocciolo E, Tacchini L, Bernelli-Zazzera A. Constitutive and Induced Synthesis of Heat Shock Proteins in Transplantable Hepatomas. Tumori 2018; 73:559-65. [PMID: 3433363 DOI: 10.1177/030089168707300604] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
The synthesis of heat shock proteins (HSP) was studied in rat liver and in a series of transplantable Morris hepatomas with different growth rates, subjected to heat shock in vivo and in vitro. Different from the liver, hepatomas synthesized HSP constitutively, i.e., also before exposure to heat. This constitutive synthesis was low and limited to one HSP in the slowest-growing tumor, more marked and involving other HSP in the intermediate- and fast-growing hepatomas. In tumor that synthesized HSP constitutively, the induction of HSP in response to heat was proportionately reduced. These patterns of reaction were essentially similar in vivo ad in vitro. The amount of HSP 68 was well correlated to the levels of its mRNA in liver and in all hepatomas, whereas the increase in HSP 89 was accompanied by a corresponding increase in the related mRNA in liver and in slow-growing hepatoma, not in the other tumors, thus suggesting a different mechanism of control of HSP 89 synthesis in the more malignant hepatomas.
Collapse
Affiliation(s)
- L Schiaffonati
- Istituto di Patologia Generale dell'Università degli Studi di Milano, Italy
| | | | | | | | | | | |
Collapse
|
10
|
Supino R, Bardella L, Gibelli N, Cairo G, Schiaffonati L. Interaction of Heat with Chemotherapy in Vitro: Effect on Cell Viability and Protein Synthesis in Human and Murine Cell Lines. Tumori 2018; 73:109-16. [PMID: 3472410 DOI: 10.1177/030089168707300204] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Cell survival in response to doxorubicin (Dx) and cis-diammine-dichloroplatinum (cis-Pt) administration, either alone or combined with hyperthermic treatment, was analyzed in human osteosarcoma (U-2-OS), murine melanoma (B16V) and murine leukemia (P388) cell lines and in Dx-resistant sublines derived from B16V and P388. In all cell lines tested there was an enhancement of drug toxicity by hyperthermia. In U-2-OS, the increase was more pronounced for cis-Pt than for Dx. In B16V and in P388, the increase in Dx toxicity was of the same degree in Dx-senstitive and Dx-resistant sublines, whereas heat-induced sensitization to cis-Pt was higher in Dx-resistant sublines than in their Dx-sensitive counterpart. Analysis of the protein pattern in the various cell lines showed that the synthesis of heat-shock proteins induced by heat was not influenced by the combined use of drugs and heat. Moreover, in spite of some differences in the overall protein pattern, no significant differences in the basal levels of heat-shock protein synthesis or in the extent of its induction after heat shock were observed between murine cell lines relatively sensitive to Dx and their corresponding selected resistant cells.
Collapse
|
11
|
Clauss-Lendzian E, Vaishampayan A, de Jong A, Landau U, Meyer C, Kok J, Grohmann E. Stress response of a clinical Enterococcus faecalis isolate subjected to a novel antimicrobial surface coating. Microbiol Res 2017; 207:53-64. [PMID: 29458868 DOI: 10.1016/j.micres.2017.11.006] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2016] [Revised: 04/21/2017] [Accepted: 11/07/2017] [Indexed: 12/17/2022]
Abstract
Emerging antibiotic resistance among pathogenic bacteria, paired with their ability to form biofilms on medical and technical devices, represents a serious problem for effective and long-term decontamination in health-care environments and gives rise to an urgent need for new antimicrobial materials. Here we present the impact of AGXX®, a novel broad-spectrum antimicrobial surface coating consisting of micro-galvanic elements formed by silver and ruthenium, on the transcriptome of Enterococcus faecalis. A clinical E. faecalis isolate was subjected to metal stress by growing it for different periods in presence of the antimicrobial coating or silver-coated steel meshes. Subsequently, total RNA was isolated and next-generation RNA sequencing was performed to analyze variations in gene expression in presence of the antimicrobial materials with focus on known stress genes. Exposure to the antimicrobial coating had a large impact on the transcriptome of E. faecalis. After 24min almost 1/5 of the E. faecalis genome displayed differential expression. At each time-point the cop operon was strongly up-regulated, providing indirect evidence for the presence of free Ag+-ions. Moreover, exposure to the antimicrobial coating induced a broad general stress response in E. faecalis. Genes coding for the chaperones GroEL and GroES and the Clp proteases, ClpE and ClpB, were among the top up-regulated heat shock genes. Differential expression of thioredoxin, superoxide dismutase and glutathione synthetase genes indicates a high level of oxidative stress. We postulate a mechanism of action where the combination of Ag+-ions and reactive oxygen species generated by AGXX® results in a synergistic antimicrobial effect, superior to that of conventional silver coatings.
Collapse
Affiliation(s)
- Emanuel Clauss-Lendzian
- Division of Infectious Diseases, University Medical Center Freiburg, Hugstetter Straße 55, 79106 Freiburg im Breisgau, Baden-Württemberg, Germany
| | - Ankita Vaishampayan
- School of Life Sciences and Technology, Beuth University of Applied Sciences, Seestrasse 64, 13347 Berlin, Germany
| | - Anne de Jong
- Department of Molecular Genetics, University of Groningen, Nijenborgh 7, 9747 Groningen, The Netherlands
| | - Uwe Landau
- Largentec GmbH, Am Waldhaus 32, 14129 Berlin, Germany
| | - Carsten Meyer
- Largentec GmbH, Am Waldhaus 32, 14129 Berlin, Germany
| | - Jan Kok
- Department of Molecular Genetics, University of Groningen, Nijenborgh 7, 9747 Groningen, The Netherlands
| | - Elisabeth Grohmann
- Division of Infectious Diseases, University Medical Center Freiburg, Hugstetter Straße 55, 79106 Freiburg im Breisgau, Baden-Württemberg, Germany; School of Life Sciences and Technology, Beuth University of Applied Sciences, Seestrasse 64, 13347 Berlin, Germany.
| |
Collapse
|
12
|
Park JH, Kim M, Oh JH. Effects of bevacizumab on endoplasmic reticulum stress in hypoxic retinal pigment epithelial cells. PLoS One 2017; 12:e0179048. [PMID: 28591217 PMCID: PMC5462411 DOI: 10.1371/journal.pone.0179048] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2016] [Accepted: 05/23/2017] [Indexed: 11/18/2022] Open
Abstract
Purpose To investigate the effects of bevacizumab on endoplasmic reticulum (ER) stress in human retinal pigment epithelial (RPE) cells cultured under hypoxic conditions. Methods RPE cells (ARPE–19) were cultured under hypoxic conditions (1% O2) with or without bevacizumab (0.3125 mg/mL) for 24 and 48 h. Cell viability was measured by a PrestoBlue assay. The expression of vascular endothelial growth factor (VEGF), binding protein/glucose-regulated protein 78 (BiP/GRP78), and C/EBP homologous protein-10 (CHOP) mRNA was measured by quantitative real-time polymerase chain reaction (qRT-PCR). BiP/GRP78 and CHOP protein levels in the cells were assessed by western blot. VEGF protein in the media was quantified by enzyme-linked immunosorbent assay (ELISA). Results Under hypoxic conditions, cell viability decreased and mRNA and protein levels of VEGF, BiP/GRP78, and CHOP increased compared to those under normoxic conditions. Bevacizumab improved cell viability and reduced the expression of VEGF mRNA under hypoxic conditions. Bevacizumab also reduced the expression of both mRNA and protein of two ER stress indicators, BiP/GRP78 and CHOP, under hypoxic conditions. Conclusions Bevacizumab mitigated ER stress in human RPE cells cultured under hypoxic conditions. This effect may be involved in the improved cell viability and reduction of VEGF expression after bevacizumab treatment of hypoxic RPE cells in vitro. However, the effects of bevacizumab on RPE cells under experimental conditions are unlikely to be clinically equivalent to those in the human eye.
Collapse
Affiliation(s)
- Joo-Hee Park
- Department of Ophthalmology, Dongguk University Ilsan Hospital, Goyang, South Korea
| | - Moosang Kim
- Department of Ophthalmology, School of Medicine, Kangwon National University, Chuncheon, South Korea
| | - Jong-Hyun Oh
- Department of Ophthalmology, Dongguk University Ilsan Hospital, Goyang, South Korea
- * E-mail:
| |
Collapse
|
13
|
Abstract
Heat shock (HS) genes, or stress genes, code for a number of proteins that collectively form the most ancient and universal stress defense system. The system determines the cell capability of adaptation to various adverse factors and performs a variety of auxiliary functions in normal physiological conditions. Common stress factors, such as higher temperatures, hypoxia, heavy metals, and others, suppress transcription and translation for the majority of genes, while HS genes are upregulated. Transcription of HS genes is controlled by transcription factors of the HS factor (HSF) family. Certain HSFs are activated on exposure to higher temperatures or other adverse factors to ensure stress-induced HS gene expression, while other HSFs are specifically activated at particular developmental stages. The regulation of the main mammalian stress-inducible factor HSF1 and Drosophila melanogaster HSF includes many components, such as a variety of early warning signals indicative of abnormal cell activity (e.g., increases in intracellular ceramide, cytosolic calcium ions, or partly denatured proteins); protein kinases, which phosphorylate HSFs at various Ser residues; acetyltransferases; and regulatory proteins, such as SUMO and HSBP1. Transcription factors other than HSFs are also involved in activating HS gene transcription; the set includes D. melanogaster GAF, mammalian Sp1 and NF-Y, and other factors. Transcription of several stress genes coding for molecular chaperones of the glucose-regulated protein (GRP) family is predominantly regulated by another stress-detecting system, which is known as the unfolded protein response (UPR) system and is activated in response to massive protein misfolding in the endoplasmic reticulum and mitochondrial matrix. A translational fine tuning of HS protein expression occurs via changing the phosphorylation status of several proteins involved in translation initiation. In addition, specific signal sequences in the 5'-UTRs of some HS protein mRNAs ensure their preferential translation in stress.
Collapse
Affiliation(s)
- D G Garbuz
- Engelhardt Institute of Molecular Biology, Russian Academy of Sciences, Moscow, 119991 Russia
| |
Collapse
|
14
|
Wang Y, Ezemaduka AN, Li Z, Chen Z, Song C. Joint Toxicity of Arsenic, Copper and Glyphosate on Behavior, Reproduction and Heat Shock Protein Response in Caenorhabditis elegans. Bull Environ Contam Toxicol 2017; 98:465-471. [PMID: 28224177 DOI: 10.1007/s00128-017-2042-5] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/18/2016] [Accepted: 02/01/2017] [Indexed: 06/06/2023]
Abstract
The soil nematode Caenorhabditis elegans was used in 24-h acute exposures to arsenic (As), copper (Cu) and glyphosate (GPS) and to mixtures of As/Cu and As/GPS to investigate the effects of mixture exposures in the worms. A synergistic type of interaction was observed for acute toxicity with the As/Cu and As/GPS mixtures. Sublethal 24-h exposures of 1/1000, 1/100 and 1/10 of the LC50 concentrations for As, Cu and GPS individually and for As/Cu and As/GPS mixtures were conducted to observe responses in locomotory behavior (head thrashing), reproduction, and heat shock protein expression. Head thrash frequency and reproduction exhibited concentration dependent decreases in both individual and combined exposures to the tested chemical stressors, and showed synergistic interactions even at micromolar concentrations. Furthermore, the HSP70 protein level was significantly increased following exposure to individual and combined chemical stressors in wild-type C. elegans. Our findings establish for the first time the effects of exposure to As/GPS and As/Cu mixtures in C. elegans.
Collapse
Affiliation(s)
- Yunbiao Wang
- Key Laboratory of Wetland Ecology and Environment, Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Changchun, 130102, China.
| | - Anastasia N Ezemaduka
- Key Laboratory of Wetland Ecology and Environment, Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Changchun, 130102, China
| | - Zhuheng Li
- Jilin Provincial Institute of Education, Changchun, 130022, China
| | - Zhanyan Chen
- Key Laboratory of Wetland Ecology and Environment, Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Changchun, 130102, China
| | - Chuantao Song
- School of Environment, Northeast Normal University, Changchun, 130117, China.
| |
Collapse
|
15
|
Tuzcu H, Unal B, Kırac E, Konuk E, Ozcan F, Elpek GO, Demir N, Aslan M. Neutral sphingomyelinase inhibition alleviates apoptosis, but not ER stress, in liver ischemia-reperfusion injury. Free Radic Res 2017; 51:253-268. [PMID: 28277984 DOI: 10.1080/10715762.2017.1298103] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
Previous studies have revealed the activation of neutral sphingomyelinase (N-SMase)/ceramide pathway in hepatic tissue following warm liver ischemia reperfusion (IR) injury. Excessive ceramide accumulation is known to potentiate apoptotic stimuli and a link between apoptosis and endoplasmic reticulum (ER) stress has been established in hepatic IR injury. Thus, this study determined the role of selective N-SMase inhibition on ER stress and apoptotic markers in a rat model of liver IR injury. Selective N-SMase inhibitor was administered via intraperitoneal injections. Liver IR injury was created by clamping blood vessels supplying the median and left lateral hepatic lobes for 60 min, followed by 60 min reperfusion. Levels of sphingmyelin and ceramide in liver tissue were determined by an optimized multiple reactions monitoring (MRM) method using ultrafast-liquid chromatography (UFLC) coupled with tandem mass spectrometry (MS/MS). Spingomyelin levels were significantly increased in all IR groups compared with controls. Treatment with a specific N-SMase inhibitor significantly decreased all measured ceramides in IR injury. A significant increase was observed in ER stress markers C/EBP-homologous protein (CHOP) and 78 kDa glucose-regulated protein (GRP78) in IR injury, which was not significantly altered by N-SMase inhibition. Inhibition of N-SMase caused a significant reduction in phospho-NF-kB levels, hepatic TUNEL staining, cytosolic cytochrome c, and caspase-3, -8, and -9 activities which were significantly increased in IR injury. Data herein confirm the role of ceramide in increased apoptotic cell death and highlight the protective effect of N-SMase inhibition in down-regulation of apoptotic stimuli responses occurring in hepatic IR injury.
Collapse
Affiliation(s)
- Hazal Tuzcu
- a Department of Medical Biochemistry , Akdeniz University Faculty of Medicine , Antalya , Turkey
| | - Betul Unal
- b Department of Pathology , Akdeniz University Faculty of Medicine , Antalya , Turkey
| | - Ebru Kırac
- a Department of Medical Biochemistry , Akdeniz University Faculty of Medicine , Antalya , Turkey
| | - Esma Konuk
- c Department of Histology , Akdeniz University Faculty of Medicine , Antalya , Turkey
| | - Filiz Ozcan
- a Department of Medical Biochemistry , Akdeniz University Faculty of Medicine , Antalya , Turkey
| | - Gulsum O Elpek
- b Department of Pathology , Akdeniz University Faculty of Medicine , Antalya , Turkey
| | - Necdet Demir
- c Department of Histology , Akdeniz University Faculty of Medicine , Antalya , Turkey
| | - Mutay Aslan
- a Department of Medical Biochemistry , Akdeniz University Faculty of Medicine , Antalya , Turkey
| |
Collapse
|
16
|
Ebokaiwe AP, Mathur PP, Farombi EO. Bonny light crude oil-induced alteration in levels of testicular stress proteins is accompanied by apoptosis in rats after treatment withdrawal. J Basic Clin Physiol Pharmacol 2017; 28:123-131. [PMID: 27861138 DOI: 10.1515/jbcpp-2016-0025] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2016] [Accepted: 08/22/2016] [Indexed: 11/15/2022]
Abstract
BACKGROUND The folkloric use of Bonny light crude oil (BLCO) in the treatment of gastrointestinal disorders and as an anti-poison is a generally acceptable practice in the Niger Delta area of Nigeria. The testicular dysfunction induced by BLCO exposure is of public concern with a view to its folkloric usage. The present study investigated the effects of BLCO exposure and withdrawal on the levels of testicular stress proteins and apoptosis-related proteins in rats. METHODS Adult male Wistar rats were exposed to 800 mg/kg body weight of BLCO for 7 days. One-half of the rats in each group were sacrificed on day 8, while the remaining one-half stayed an additional 45 days without treatment. RESULTS Western blot analysis showed that administration of BLCO resulted in a significant increase in the levels of stress proteins and apoptosis-related proteins by 50% and above relative to control, except cytosolic nuclear factor-κB (NF-κB), which decreased significantly relative to control. This was followed by a concomitant increase in the expression of caspase-3, FasL, and NF-κB by immunofluorescence staining within the testicular germ cells. Apoptosis showed a significant increase in TUNEL-positive cells. Following withdrawal of treatment, BLCO-mediated alteration in stress proteins and induction of apoptosis persisted relative to control. CONCLUSIONS Collectively, BLCO induced irreversible alteration in testicular stress proteins and apoptosis in rats within the time course of investigation. These findings highlight the potential long-term adverse effects of BLCO on individuals unduly exposed to BLCO.
Collapse
|
17
|
Cai SY, Zhang Y, Xu YP, Qi ZY, Li MQ, Ahammed GJ, Xia XJ, Shi K, Zhou YH, Reiter RJ, Yu JQ, Zhou J. HsfA1a upregulates melatonin biosynthesis to confer cadmium tolerance in tomato plants. J Pineal Res 2017; 62. [PMID: 28095626 DOI: 10.1111/jpi.12387] [Citation(s) in RCA: 137] [Impact Index Per Article: 19.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/01/2016] [Accepted: 01/11/2017] [Indexed: 12/11/2022]
Abstract
Melatonin regulates broad aspects of plant responses to various biotic and abiotic stresses, but the upstream regulation of melatonin biosynthesis by these stresses remains largely unknown. Herein, we demonstrate that transcription factor heat-shock factor A1a (HsfA1a) conferred cadmium (Cd) tolerance to tomato plants, in part through its positive role in inducing melatonin biosynthesis under Cd stress. Analysis of leaf phenotype, chlorophyll content, and photosynthetic efficiency revealed that silencing of the HsfA1a gene decreased Cd tolerance, whereas its overexpression enhanced plant tolerance to Cd. HsfA1a-silenced plants exhibited reduced melatonin levels, and HsfA1a overexpression stimulated melatonin accumulation and the expression of the melatonin biosynthetic gene caffeic acid O-methyltransferase 1 (COMT1) under Cd stress. Both an in vitro electrophoretic mobility shift assay and in vivo chromatin immunoprecipitation coupled with qPCR analysis revealed that HsfA1a binds to the COMT1 gene promoter. Meanwhile, Cd stress induced the expression of heat-shock proteins (HSPs), which was compromised in HsfA1a-silenced plants and more robustly induced in HsfA1a-overexpressing plants under Cd stress. COMT1 silencing reduced HsfA1a-induced Cd tolerance and melatonin accumulation in HsfA1a-overexpressing plants. Additionally, the HsfA1a-induced expression of HSPs was partially compromised in COMT1-silenced wild-type or HsfA1a-overexpressing plants under Cd stress. These results demonstrate that HsfA1a confers Cd tolerance by activating transcription of the COMT1 gene and inducing accumulation of melatonin that partially upregulates expression of HSPs.
Collapse
Affiliation(s)
- Shu-Yu Cai
- Department of Horticulture/Zhejiang Provincial Key Laboratory of Horticultural Plant Integrative Biology, Zhejiang University, Hangzhou, China
| | - Yun Zhang
- Department of Horticulture/Zhejiang Provincial Key Laboratory of Horticultural Plant Integrative Biology, Zhejiang University, Hangzhou, China
| | - You-Ping Xu
- Center of Analysis and Measurement, Zhejiang University, Hangzhou, China
| | - Zhen-Yu Qi
- Agricultural Experiment Station, Zhejiang University, Hangzhou, China
| | - Meng-Qi Li
- Zhejiang Institute of Geological Survey/Geological Research Center for Agricultural Applications, China Geological Survey, Hangzhou, China
| | - Golam Jalal Ahammed
- Department of Horticulture/Zhejiang Provincial Key Laboratory of Horticultural Plant Integrative Biology, Zhejiang University, Hangzhou, China
| | - Xiao-Jian Xia
- Department of Horticulture/Zhejiang Provincial Key Laboratory of Horticultural Plant Integrative Biology, Zhejiang University, Hangzhou, China
| | - Kai Shi
- Department of Horticulture/Zhejiang Provincial Key Laboratory of Horticultural Plant Integrative Biology, Zhejiang University, Hangzhou, China
| | - Yan-Hong Zhou
- Department of Horticulture/Zhejiang Provincial Key Laboratory of Horticultural Plant Integrative Biology, Zhejiang University, Hangzhou, China
| | - Russel J Reiter
- University of Texas Health Science Center, San Antonio, TX, USA
| | - Jing-Quan Yu
- Department of Horticulture/Zhejiang Provincial Key Laboratory of Horticultural Plant Integrative Biology, Zhejiang University, Hangzhou, China
- Key Laboratory of Horticultural Plants Growth, Development and Quality Improvement, Agricultural Ministry of China, Hangzhou, China
| | - Jie Zhou
- Department of Horticulture/Zhejiang Provincial Key Laboratory of Horticultural Plant Integrative Biology, Zhejiang University, Hangzhou, China
| |
Collapse
|
18
|
Wu S, Zhang H, Luo M, Chen K, Yang W, Bai L, Huang A, Wang D. High Level Soluble Expression and ATPase Characterization of Human Heat Shock Protein GRP78. Biochemistry (Mosc) 2017; 82:186-191. [PMID: 28320302 DOI: 10.1134/s0006297917020109] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Human GRP78 has been shown to promote cancer progression and is regarded as a novel target for anticancer drugs. However, generation of recombinant full-length GRP78 remains challenging. This report demonstrates that E. coli autoinduction is an excellent method for the preparation of active recombinant GRP78 protein. The final yield was approximately 50 mg/liter of autoinduction culture. Gel-filtration experiments confirmed that the chaperone is a monomer. The purified human GRP78 catalyzed the conversion of ATP to ADP without requiring metal ions as cofactors. Three mutants, T38A, T229A, and S300A, exhibited much lower activity than wild-type GRP78, indicating that the active sites of the ATPase are located at the negatively charged cavity. Three mutants in the negatively charged cavity region dramatically reduced GRP78 activity, further confirming the region as the site of ATPase activity.
Collapse
Affiliation(s)
- Shuang Wu
- Chongqing Medical University, Key Laboratory of Molecular Biology of Infectious Disease, YiXueYuanlu-1, Chongqing, 400016, P. R. China.
| | | | | | | | | | | | | | | |
Collapse
|
19
|
Garbuz DG, Evgen’ev MB. [The evolution of heat shock genes and expression patterns of heat shock proteins in the species from temperature contrasting habitats]. Genetika 2017; 53:12-30. [PMID: 29372801] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Heat shock genes are the most evolutionarily ancient among the systems responsible for adaptation of organisms to a harsh environment. The encoded proteins (heat shock proteins, Hsps) represent the most important factors of adaptation to adverse environmental conditions. They serve as molecular chaperones, providing protein folding and preventing aggregation of damaged cellular proteins. Structural analysis of the heat shock genes in individuals from both phylogenetically close and very distant taxa made it possible to reveal the basic trends of the heat shock gene organization in the context of adaptation to extreme conditions. Using different model objects and nonmodel species from natural populations, it was demonstrated that modulation of the Hsps expression during adaptation to different environmental conditions could be achieved by changing the number and structural organization of heat shock genes in the genome, as well as the structure of their promoters. It was demonstrated that thermotolerant species were usually characterized by elevated levels of Hsps under normal temperature or by the increase in the synthesis of these proteins in response to heat shock. Analysis of the heat shock genes in phylogenetically distant organisms is of great interest because, on one hand, it contributes to the understanding of the molecular mechanisms of evolution of adaptogenes and, on the other hand, sheds the light on the role of different Hsps families in the development of thermotolerance and the resistance to other stress factors.
Collapse
|
20
|
Khoso PA, Liu C, Liu C, Khoso MH, Li S. Selenium Deficiency Activates Heat Shock Protein Expression in Chicken Spleen and Thymus. Biol Trace Elem Res 2016; 173:492-500. [PMID: 27005933 DOI: 10.1007/s12011-016-0673-8] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/20/2015] [Accepted: 03/14/2016] [Indexed: 01/27/2023]
Abstract
Heat shock proteins (Hsps) are protective proteins present in nearly all species; they are used as biomarkers of various stress conditions in humans, animals, and birds. Selenium (Se) deficiency, which can depress the production of Hsps, can cause chicken tissue injuries. To investigate Hsp production, mRNA, and protein levels in Se-deficient chicken spleens and thymuses, a total of 180 1-day-old sea blue white laying hens (90 chickens/group) were harvested in two groups (the control group and the Se-deficient group) in 15, 25, 35, 45, and 55 days, respectively. The results showed that mRNA levels of Hsp27, Hsp40, Hsp60, Hsp70, and Hsp90 were significantly increased in the spleens and thymuses of the Se-deficient group compared to the control group. Further protein levels of Hsp60, Hsp70, and Hsp90 were also significantly increased in the spleen and thymus of the Se-deficient group compared to the control group. Meanwhile, the spleen expression ratio of Hsp40 mRNA level and Hsp70 protein level were higher in the Se-deficient group than other proteins. In the thymus, the Hsp90 mRNA level and Hsp60 protein expression level were the highest level in the Se-deficient group among other proteins. Based on these results, we concluded that Se deficiency could induce a protective stress response in chicken by means of promoting the mRNA and protein expression of Hsps, thus easing the effects of Se deficiency to some extent.
Collapse
Affiliation(s)
- Pervez Ahmed Khoso
- College of Veterinary Medicine, Northeast Agricultural University, Harbin, 150030, People's Republic of China
| | - Ci Liu
- College of Veterinary Medicine, Northeast Agricultural University, Harbin, 150030, People's Republic of China
| | - Chunpeng Liu
- College of Veterinary Medicine, Northeast Agricultural University, Harbin, 150030, People's Republic of China
| | - Mir Hassan Khoso
- College of Veterinary Medicine, Northeast Agricultural University, Harbin, 150030, People's Republic of China
| | - Shu Li
- College of Veterinary Medicine, Northeast Agricultural University, Harbin, 150030, People's Republic of China.
| |
Collapse
|
21
|
Zheng S, Song H, Gao H, Liu C, Zhang Z, Fu J. The Antagonistic Effect of Selenium on Lead-Induced Inflammatory Factors and Heat Shock Protein mRNA Level in Chicken Cartilage Tissue. Biol Trace Elem Res 2016; 173:177-84. [PMID: 26831653 DOI: 10.1007/s12011-016-0630-6] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/28/2015] [Accepted: 01/20/2016] [Indexed: 10/22/2022]
Abstract
Selenium (Se) is recognized as a necessary trace mineral in animal diets, including those of birds. Lead (Pb) is a toxic heavy metal and can damage organs in humans and animals. Complex antagonistic interactions between Se and heavy metals have been reported in previous studies. However, little is known regarding the effects of Se on Pb-induced toxicity and the expression of inflammatory factors and heat shock proteins (HSPs) in the cartilage of chickens. In this present study, we fed chickens either with Se or Pb or both Se and Pb supplement and later analyzed the mRNA expressions of inflammatory factors (inducible nitric oxide synthase (iNOS), nuclear factor-kappa B (NF-κB), tumor necrosis factor-α (TNF-α), and cyclooxygenase-2 (COX-2)) and HSPs (Hsp27, Hsp40, Hsp60, Hsp70, and Hsp90). The results showed that Se and Pb influenced the expression of inflammatory factors and HSP genes in the chicken cartilage tissues. Additionally, we also found that antagonistic interaction existed between Se and Pb supplementation. Our findings suggested that Se could exert a antagonistic effect on Pb in chicken cartilage tissues.
Collapse
Affiliation(s)
- Shufang Zheng
- College of Veterinary Medicine, Northeast Agricultural University, Harbin, 150030, People's Republic of China
| | - Huanyu Song
- College of Veterinary Medicine, Northeast Agricultural University, Harbin, 150030, People's Republic of China
| | - Han Gao
- College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, 210095, People's Republic of China
| | - Chunpeng Liu
- College of Veterinary Medicine, Northeast Agricultural University, Harbin, 150030, People's Republic of China
| | - Ziwei Zhang
- College of Veterinary Medicine, Northeast Agricultural University, Harbin, 150030, People's Republic of China.
| | - Jing Fu
- College of Animal Science and Technology, Northeast Agricultural University, Harbin, 150030, People's Republic of China.
- Department of Clinical Sciences, College of Veterinary Medicine, Cornell University, Ithaca, NY, USA.
| |
Collapse
|
22
|
Khadir A, Kavalakatt S, Abubaker J, Cherian P, Madhu D, Al-Khairi I, Abu-Farha M, Warsame S, Elkum N, Dehbi M, Tiss A. Physical exercise alleviates ER stress in obese humans through reduction in the expression and release of GRP78 chaperone. Metabolism 2016; 65:1409-20. [PMID: 27506747 DOI: 10.1016/j.metabol.2016.06.004] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/27/2016] [Revised: 06/08/2016] [Accepted: 06/14/2016] [Indexed: 12/17/2022]
Abstract
BACKGROUND AND OBJECTIVES Perturbation of the endoplasmic reticulum (ER) homeostasis has emerged as one of the prominent features of obesity and diabetes. This occurs when the adaptive unfolded protein response (UPR) fails to restore ER function in key metabolic tissues. We previously reported increased inflammation and impaired heat shock response (HSR) in obese human subjects that were restored by physical exercise. Here, we investigated the status of ER stress chaperone; glucose-regulated protein 78 (GRP78) and its downstream UPR pathways in human obese, and their modulation by a supervised 3-month physical exercise. METHODS Subcutaneous adipose tissue (SAT) and blood samples were collected from non-diabetic adult human lean (n=40) and obese (n=40, at baseline and after 3months of physical exercise). Transcriptomic profiling was used as a primary screen to identify differentially expressed genes and it was carried out on SAT samples using the UPR RT(2) Profiler PCR Array. Conventional RT-PCR, immunohistochemistry, immunofluorescence, Western blot and ELISA were used to validate the transcriptomic data. Correlation analyses with the physical, clinical and biochemical outcomes were performed using Pearson's rank correlation coefficient. RESULTS Levels of GRP78 and its three downstream UPR arms; activating transcription factor-6 (ATF6), inositol-requiring enzyme-1α (IRE1α) and protein kinase RNA-like endoplasmic reticulum kinase (PERK) were increased in obese subjects. More interestingly, higher levels of circulating GRP78 protein were found in obese compared to lean subjects which correlated negatively with maximum oxygen uptake (VO2 Max) but positively with high-sensitivity C-reactive protein (hsCRP) and obesity indicators such as BMI, percentage body fat (PBF) and waist circumference. GRP78 increased secretion in obese was further confirmed in vitro using 3T3-L1 preadipocyte cells under ER stress. Finally, we showed that physical exercise significantly attenuated the expression and release of GRP78 with a concomitant reduction in the phosphorylation of IRE1α and eukaryotic initiation factor-2α (eIF2α). CONCLUSION Our results suggest that physical exercise alleviates ER stress in human obese through attenuation of GRP78 signaling network.
Collapse
Affiliation(s)
- Abdelkrim Khadir
- Biochemistry and Molecular Biology Research Unit, Dasman Diabetes Institute, Kuwait City, Kuwait
| | - Sina Kavalakatt
- Biochemistry and Molecular Biology Research Unit, Dasman Diabetes Institute, Kuwait City, Kuwait
| | - Jehad Abubaker
- Biochemistry and Molecular Biology Research Unit, Dasman Diabetes Institute, Kuwait City, Kuwait
| | - Preethi Cherian
- Biochemistry and Molecular Biology Research Unit, Dasman Diabetes Institute, Kuwait City, Kuwait
| | - Dhanya Madhu
- Biochemistry and Molecular Biology Research Unit, Dasman Diabetes Institute, Kuwait City, Kuwait
| | - Irina Al-Khairi
- Biochemistry and Molecular Biology Research Unit, Dasman Diabetes Institute, Kuwait City, Kuwait
| | - Mohamed Abu-Farha
- Biochemistry and Molecular Biology Research Unit, Dasman Diabetes Institute, Kuwait City, Kuwait
| | - Samia Warsame
- Biochemistry and Molecular Biology Research Unit, Dasman Diabetes Institute, Kuwait City, Kuwait
| | - Naser Elkum
- Clinical Epidemiology, Sidra Medical and Research Center, Doha, Qatar
| | - Mohammed Dehbi
- Diabetes Research Centre, Qatar Biomedical Research Institute and Hamad Bin Khalifa University, Qatar Foundation, Doha, Qatar
| | - Ali Tiss
- Biochemistry and Molecular Biology Research Unit, Dasman Diabetes Institute, Kuwait City, Kuwait.
| |
Collapse
|
23
|
Lang BJ, Gorrell RJ, Tafreshi M, Hatakeyama M, Kwok T, Price JT. The Helicobacter pylori cytotoxin CagA is essential for suppressing host heat shock protein expression. Cell Stress Chaperones 2016; 21:523-33. [PMID: 26928021 PMCID: PMC4837183 DOI: 10.1007/s12192-016-0680-x] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2015] [Revised: 01/11/2016] [Accepted: 02/10/2016] [Indexed: 02/07/2023] Open
Abstract
Bacterial infections typically elicit a strong Heat Shock Response (HSR) in host cells. However, the gastric pathogen Helicobacter pylori has the unique ability to repress this response, the mechanism of which has yet to be elucidated. This study sought to characterize the underlying mechanisms by which H. pylori down-modulates host HSP expression upon infection. Examination of isogenic mutant strains of H. pylori defective in components of the type IV secretion system (T4SS), identified the secretion substrate, CagA, to be essential for down-modulation of the HSPs HSPH1 (HSP105), HSPA1A (HSP72), and HSPD1 (HSP60) upon infection of the AGS gastric adenocarcinoma cell line. Ectopic expression of CagA by transient transfection was insufficient to repress HSP expression in AGS or HEK293T cells, suggesting that additional H. pylori factors are required for HSP repression. RT-qPCR analysis of HSP gene expression in AGS cells infected with wild-type H. pylori or isogenic cagA-deletion mutant found no significant change to account for reduced HSP levels. In summary, this study identified CagA to be an essential bacterial factor for H. pylori-mediated suppression of host HSP expression. The novel finding that HSPH1 is down-modulated by H. pylori further highlights the unique ability of H. pylori to repress the HSR within host cells. Elucidation of the mechanism by which H. pylori achieves HSP repression may prove to be beneficial in the identification of novel mechanisms to inhibit the HSR pathway and provide further insight into the interactions between H. pylori and the host gastric epithelium.
Collapse
Affiliation(s)
- Ben J Lang
- Department of Biochemistry and Molecular Biology, Monash University, Clayton, 3800, Victoria, Australia
- Department of Radiation Oncology, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA
| | - Rebecca J Gorrell
- Department of Biochemistry and Molecular Biology, Monash University, Clayton, 3800, Victoria, Australia
- Infection and Immunity, and Cancer Programs, Monash Biomedicine Discovery Institute, Department of Microbiology, Monash University, Clayton, 3800, Victoria, Australia
| | - Mona Tafreshi
- Department of Biochemistry and Molecular Biology, Monash University, Clayton, 3800, Victoria, Australia
| | - Masanori Hatakeyama
- Division of Microbiology, Graduate School of Medicine, University of Tokyo, Tokyo, 113-0033, Japan
| | - Terry Kwok
- Department of Biochemistry and Molecular Biology, Monash University, Clayton, 3800, Victoria, Australia.
- Infection and Immunity, and Cancer Programs, Monash Biomedicine Discovery Institute, Department of Microbiology, Monash University, Clayton, 3800, Victoria, Australia.
| | - John T Price
- Department of Biochemistry and Molecular Biology, Monash University, Clayton, 3800, Victoria, Australia.
- Centre for Chronic Disease, College of Health and Biomedicine, Victoria University, St Albans, Melbourne, VIC, Australia.
| |
Collapse
|
24
|
Zhang K, Zhao P, Guo G, Guo Y, Li S, He Y, Sun X, Chai H, Zhang W, Xing M. Arsenic Trioxide Exposure Induces Heat Shock Protein Responses in Cock Livers. Biol Trace Elem Res 2016; 170:459-65. [PMID: 26329997 DOI: 10.1007/s12011-015-0487-0] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/15/2015] [Accepted: 08/18/2015] [Indexed: 12/15/2022]
Abstract
Arsenic is a trace element widely found in nature, and there are several forms of arsenic, including the most toxic form of trivalent arsenic. Arsenic trioxide (As2O3) is widespread in nature and tends to accumulate in animals and humans, thus causing great harm. Although the important role of heat shock proteins (HSPs) has been demonstrated in many types of mammals exposed to As2O3, the function of these proteins in poultry, especially in cocks, remains unclear. In this study, we used experimental animals (male chickens), which were fed a diet including 0, 7.5, 15, and 30 mg kg(-1) As2O3, respectively, in the control, low, middle, and high groups. The livers were collected after the cocks were treated with arsenic for 30, 60, and 90 days. We detected HSP27, HSP60, HSP70, and HSP90 levels in the livers of the cocks by real-time PCR and HSP60 and HSP70 levels by Western blot. The results showed that the messenger RNA and protein expression of HSPs exposed to As2O3 had obviously increased. These results demonstrated that arsenic toxicity affected the expression of HSP levels in cock livers.
Collapse
Affiliation(s)
- Kexin Zhang
- College of Wildlife Resources, Northeast Forestry University, 26 Hexing Road, Harbin, Heilongjiang Province, 150040, China
| | - Panpan Zhao
- College of Wildlife Resources, Northeast Forestry University, 26 Hexing Road, Harbin, Heilongjiang Province, 150040, China
| | - Guangyang Guo
- College of Wildlife Resources, Northeast Forestry University, 26 Hexing Road, Harbin, Heilongjiang Province, 150040, China
| | - Ying Guo
- College of Wildlife Resources, Northeast Forestry University, 26 Hexing Road, Harbin, Heilongjiang Province, 150040, China
| | - Siwen Li
- College of Wildlife Resources, Northeast Forestry University, 26 Hexing Road, Harbin, Heilongjiang Province, 150040, China
| | - Ying He
- College of Wildlife Resources, Northeast Forestry University, 26 Hexing Road, Harbin, Heilongjiang Province, 150040, China
| | - Xiao Sun
- College of Wildlife Resources, Northeast Forestry University, 26 Hexing Road, Harbin, Heilongjiang Province, 150040, China
| | - Hongliang Chai
- College of Wildlife Resources, Northeast Forestry University, 26 Hexing Road, Harbin, Heilongjiang Province, 150040, China.
| | - Wen Zhang
- College of Wildlife Resources, Northeast Forestry University, 26 Hexing Road, Harbin, Heilongjiang Province, 150040, China.
| | - Mingwei Xing
- College of Wildlife Resources, Northeast Forestry University, 26 Hexing Road, Harbin, Heilongjiang Province, 150040, China.
| |
Collapse
|
25
|
Zha Q, Xi X, Jiang A, Wang S, Tian Y. Changes in the protective mechanism of photosystem II and molecular regulation in response to high temperature stress in grapevines. Plant Physiol Biochem 2016; 101:43-53. [PMID: 26852109 DOI: 10.1016/j.plaphy.2016.01.024] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/19/2015] [Revised: 01/29/2016] [Accepted: 01/29/2016] [Indexed: 06/05/2023]
Abstract
The response to high temperature stress, which influences the growth and development of grapes, varies between laboratory conditions and ambient growth conditions, and is poorly understood. In the present study, we investigated the effects of high temperature on grapevines (Vitis vinifera L. × Vitis labrusca L.) grown under artificial and ambient conditions. A temperature of 35 °C did not alter Photosystem II (PS II) activity and the expression of some heat-shock protein (HSPs) genes. These changes were, however, observed at 45 °C under artificial conditions, as well as when the ambient natural temperature was greater than 40 °C. Interestingly, these changes corresponded to shifts in PS II activity and HSPs expression. The protective mechanism of PS II was induced by temperatures greater than 40 °C. These data indicating that the expression of HSFA2, GLOS1 and some heat-shock protein (sHSPs) genes were more sensitive to the heat stress. Unlike the Kyoho grapevines, the Jumeigui grapevines showed rapid and dramatically deterioration in PS II activity and the expression of some heat response genes and HSP21, indicating that the Jumeigui grapevines could not counter the heat stress. These were some differences in PSII activity and the expression of heat response genes between the two cultivated conditions could be attributed to other environmental factors, inherent plant vigor, and the adaptation mechanism.
Collapse
Affiliation(s)
- Qian Zha
- Research Institute of Forestry and Pomology, Shanghai Academy of Agricultural Science, Shanghai, 201403, China; School of Agriculture and Biology, Shanghai Jiaotong University, Shanghai, 200240, China
| | - Xiaojun Xi
- Research Institute of Forestry and Pomology, Shanghai Academy of Agricultural Science, Shanghai, 201403, China
| | - Aili Jiang
- Research Institute of Forestry and Pomology, Shanghai Academy of Agricultural Science, Shanghai, 201403, China.
| | - Shiping Wang
- School of Agriculture and Biology, Shanghai Jiaotong University, Shanghai, 200240, China
| | - Yihua Tian
- Research Institute of Forestry and Pomology, Shanghai Academy of Agricultural Science, Shanghai, 201403, China
| |
Collapse
|
26
|
Karthikeyan B, Arun A, Harini L, Sundar K, Kathiresan T. Role of ZnS Nanoparticles on Endoplasmic Reticulum Stress-mediated Apoptosis in Retinal Pigment Epithelial Cells. Biol Trace Elem Res 2016; 170:390-400. [PMID: 26329999 DOI: 10.1007/s12011-015-0493-2] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/13/2015] [Accepted: 08/24/2015] [Indexed: 01/22/2023]
Abstract
Age-related macular degeneration (AMD) is the leading cause for irreversible visual impairment affecting 30-50 million individuals every year. Oxidative stress and endoplasmic reticulum stress have been identified as crucial factors for the pathogenesis of AMD. Current treatments do not focus on underlying stimuli responsible for the disease like AMD. Zinc is an important trace metal in retina and its deficiency leads to AMD. Recent studies on zinc sulphide nanoparticles (ZnS-NPs) are gaining attention in the field of physical and biological research. In this present study, in investigating the role of ZnS-NPs on hydrogen peroxide and thapsigargin-treated primary mice retinal pigment epithelial (MRPE) cells, we synthesized ZnS-NPs and characterized using atomic force microscope (AFM) and SEM-EDX. The ZnS-NPs abrogate the primary MRPE cell death through inhibition of oxidative stress-induced reactive oxygen species production and cell permeability. Oxidant molecules hydrogen peroxide and thapsigargin alter unfolded protein response such as glucose-regulated protein 78 (GRP78) and C/EBP homology protein (CHOP) expressions, whereas ZnS-NPs-pre-treated primary MRPE cells downregulated the overexpression of such proteins. The expressions of apoptotic proteins caspase 12 and cleaved caspase 9 and caspase 3 were also significantly controlled in ZnS-NPs-treated primary MRPE cells when comparing with thapsigargin- and hydrogen peroxide-treated cells. From these results, ZnS-NPs stabilize reactive oxygen species elevation, when subjected to hydrogen peroxide- and thapsigargin-mediated oxidant injury and helps in maintaining normal homeostasis through regulating endoplasmic reticulum (ER) stress response proteins which is the lead cause for apoptosis-mediated pathogenesis of AMD.
Collapse
Affiliation(s)
- Bose Karthikeyan
- Department of Biotechnology, Kalasalingam University, Krishnankoil, Tamil Nadu, -626 126, India
| | - Arumugaperumal Arun
- Department of Biotechnology, Kalasalingam University, Krishnankoil, Tamil Nadu, -626 126, India
| | | | - Krishnan Sundar
- Department of Biotechnology, Kalasalingam University, Krishnankoil, Tamil Nadu, -626 126, India
- International Research Centre, Kalasalingam University, Krishnankoil, Tamil Nadu, -626 126, India
| | - Thandavarayan Kathiresan
- Department of Biotechnology, Kalasalingam University, Krishnankoil, Tamil Nadu, -626 126, India.
- International Research Centre, Kalasalingam University, Krishnankoil, Tamil Nadu, -626 126, India.
| |
Collapse
|
27
|
Puche JE, Muñoz Ú, García-Magariño M, Sádaba MC, Castilla-Cortázar I. Partial IGF-1 deficiency induces brain oxidative damage and edema, which are ameliorated by replacement therapy. Biofactors 2016; 42:60-79. [PMID: 26891019 DOI: 10.1002/biof.1255] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/23/2015] [Revised: 10/28/2015] [Accepted: 11/05/2015] [Indexed: 11/10/2022]
Abstract
Insulin-like growth factor 1 (IGF-1) induces multiple cytoprotective effects on every tissue, including the brain. Since the mechanisms by which IGF-1 produces neuroprotection are not fully understood, the aim of this work was to delve into the underlying mechanisms. IGF-1 deficient mice (Hz) were compared with wild type (WT) and Hz mice treated with low doses of IGF-1 (2 µg/100 g body weight/day) for 10 days (Hz + IGF). Gene expression, quantitative PCR, histology, and magnetic resonance imaging were performed in the three groups. IGF-1 deficiency induced increased oxidative damage determined by markers of lipid peroxidation and hypoxia, as well as gene expression of heat shock proteins, antioxidant enzymes, and molecules involved in inflammation, apoptosis, and mitochondrial protection. These changes correlated with edema and learning impairment in Hz mice. IGF-1 therapy improved all these alterations. In conclusion, IGF-1 deficiency is responsible for increased brain oxidative damage, edema, and impaired learning and memory capabilities which are rescued by IGF-1 replacement therapy.
Collapse
Affiliation(s)
- Juan E Puche
- School of Medicine, Department of Medical Physiology, University CEU San Pablo, Institute of Applied Molecular Medicine (IMMA), Madrid, Spain
- Fundación De Investigación HM Hospitales, Plaza Del Conde Del Valle De Súchil 16, Madrid, Spain
| | - Úrsula Muñoz
- School of Medicine, Department of Medical Physiology, University CEU San Pablo, Institute of Applied Molecular Medicine (IMMA), Madrid, Spain
- Fundación De Investigación HM Hospitales, Plaza Del Conde Del Valle De Súchil 16, Madrid, Spain
| | - Mariano García-Magariño
- Fundación De Investigación HM Hospitales, Plaza Del Conde Del Valle De Súchil 16, Madrid, Spain
- Tecnologico De Monterrey (TEC), Escuela De Medicina, Monterrey, Mexico
| | - María C Sádaba
- School of Medicine, Department of Medical Physiology, University CEU San Pablo, Institute of Applied Molecular Medicine (IMMA), Madrid, Spain
| | - Inma Castilla-Cortázar
- Fundación De Investigación HM Hospitales, Plaza Del Conde Del Valle De Súchil 16, Madrid, Spain
- Tecnologico De Monterrey (TEC), Escuela De Medicina, Monterrey, Mexico
| |
Collapse
|
28
|
Barati MT, Powell DW, Kechavarzi BD, Isaacs SM, Zheng S, Epstein PN, Cai L, Coventry S, Rane MJ, Klein JB. Differential expression of endoplasmic reticulum stress-response proteins in different renal tubule subtypes of OVE26 diabetic mice. Cell Stress Chaperones 2016; 21:155-166. [PMID: 26483256 PMCID: PMC4679738 DOI: 10.1007/s12192-015-0648-2] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2015] [Revised: 09/28/2015] [Accepted: 10/01/2015] [Indexed: 02/01/2023] Open
Abstract
Regulation of the endoplasmic reticulum (ER) stress-response pathway during the course of diabetes specifically in renal tubules is unclear. Since tubule cell dysfunction is critical to progression of diabetic nephropathy, this study analyzed markers of ER stress response and ER chaperones at different stages of diabetes and in different renal tubule subtypes of OVE26 type-1 diabetic mice. ER stress-responseinduced chaperones GRP78, GRP94, and protein disulfide isomerase (PDI) were increased in isolated cortical tubules of older diabetic mice, while PDI was decreased in tubules of young diabetic mice. Immunofluorescence staining of kidneys from older mice showed GRP78 and PDI upregulation in all cortical tubule segments, with substantial induction of PDI in distal tubules. Protein kinase RNA-like endoplasmic reticulum kinase (PERK) phosphorylation was increased in cortical tubules of young diabetic mice, with no differences between older diabetic and control mice. Expression of ER stress-induced PERK inhibitor p58IPK was decreased and then increased in all tubule subtypes of young and older mice, respectively. Knockdown of PERK by small interfering RNA (siRNA) increased fibronectin secretion in cultured proximal tubule cells. Tubules of older diabetic mice had significantly more apoptotic cells, and ER stress-induced proapoptotic transcription factor C/EBP homologous protein (CHOP) was increased in proximal and distal tubules of diabetic mice and diabetic humans. CHOP induction in OVE26 mice was not altered by severity of proteinuria. Overexpression of CHOP in cultured proximal tubule cells increased expression of fibronectin. These findings demonstrate differential ER stress-response signaling in tubule subtypes of diabetic mice and implicate a role for PERK and CHOP in tubule cell matrix protein production.
Collapse
Affiliation(s)
- Michelle T Barati
- Kidney Disease Program, Department of Medicine, University of Louisville, 570 S. Preston St., Room 102, Louisville, KY, 40202, USA.
| | - David W Powell
- Kidney Disease Program, Department of Medicine, University of Louisville, 570 S. Preston St., Room 102, Louisville, KY, 40202, USA
- Department of Biochemistry and Molecular Biology, University of Louisville, Louisville, KY, USA
| | - Bobak D Kechavarzi
- Kidney Disease Program, Department of Medicine, University of Louisville, 570 S. Preston St., Room 102, Louisville, KY, 40202, USA
| | - Susan M Isaacs
- Kidney Disease Program, Department of Medicine, University of Louisville, 570 S. Preston St., Room 102, Louisville, KY, 40202, USA
| | - Shirong Zheng
- Department of Pediatrics, University of Louisville, Louisville, KY, USA
| | - Paul N Epstein
- Department of Pediatrics, University of Louisville, Louisville, KY, USA
| | - Lu Cai
- Department of Pediatrics, University of Louisville, Louisville, KY, USA
| | - Susan Coventry
- Department of Pediatric Pathology, University of Louisville, Louisville, KY, USA
| | - Madhavi J Rane
- Kidney Disease Program, Department of Medicine, University of Louisville, 570 S. Preston St., Room 102, Louisville, KY, 40202, USA
- Department of Biochemistry and Molecular Biology, University of Louisville, Louisville, KY, USA
| | - Jon B Klein
- Kidney Disease Program, Department of Medicine, University of Louisville, 570 S. Preston St., Room 102, Louisville, KY, 40202, USA
- Department of Biochemistry and Molecular Biology, University of Louisville, Louisville, KY, USA
| |
Collapse
|
29
|
Bikas A, Jensen K, Patel A, Costello J, McDaniel D, Klubo-Gwiezdzinska J, Larin O, Hoperia V, Burman KD, Boyle L, Wartofsky L, Vasko V. Glucose-deprivation increases thyroid cancer cells sensitivity to metformin. Endocr Relat Cancer 2015; 22:919-32. [PMID: 26362676 DOI: 10.1530/erc-15-0402] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 09/11/2015] [Indexed: 01/23/2023]
Abstract
Metformin inhibits thyroid cancer cell growth. We sought to determine if variable glucose concentrations in medium alter the anti-cancer efficacy of metformin. Thyroid cancer cells (FTC133 and BCPAP) were cultured in high-glucose (20 mM) and low-glucose (5 mM) medium before treatment with metformin. Cell viability and apoptosis assays were performed. Expression of glycolytic genes was examined by real-time PCR, western blot, and immunostaining. Metformin inhibited cellular proliferation in high-glucose medium and induced cell death in low-glucose medium. In low-, but not in high-glucose medium, metformin induced endoplasmic reticulum stress, autophagy, and oncosis. At micromolar concentrations, metformin induced phosphorylation of AMP-activated protein kinase and blocked p-pS6 in low-glucose medium. Metformin increased the rate of glucose consumption from the medium and prompted medium acidification. Medium supplementation with glucose reversed metformin-inducible morphological changes. Treatment with an inhibitor of glycolysis (2-deoxy-d-glucose (2-DG)) increased thyroid cancer cell sensitivity to metformin. The combination of 2-DG with metformin led to cell death. Thyroid cancer cell lines were characterized by over-expression of glycolytic genes, and metformin decreased the protein level of pyruvate kinase muscle 2 (PKM2). PKM2 expression was detected in recurrent thyroid cancer tissue samples. In conclusion, we have demonstrated that the glucose concentration in the cellular milieu is a factor modulating metformin's anti-cancer activity. These data suggest that the combination of metformin with inhibitors of glycolysis could represent a new strategy for the treatment of thyroid cancer.
Collapse
Affiliation(s)
- Athanasios Bikas
- Division of EndocrinologyDepartment of Medicine, Medstar Washington Hospital Center, 110 Irving Street Northwest, Washington, District of Columbia 20010, USADepartment of PediatricsUniformed Services University of the Health Sciences, 4301 Jones Bridge Road, Bethesda, Maryland 20814-4712, USABiomedical Instrumental CenterUniformed Services University of the Health Sciences, 4301 Jones Bridge Road, Bethesda, Maryland 20814-4712, USACenter for Endocrine SurgeryKiev, UkraineDepartment of SurgeryMedstar Georgetown University Hospital, 3800 Reservoir Road, Washington, District of Columbia 20007, USA
| | - Kirk Jensen
- Division of EndocrinologyDepartment of Medicine, Medstar Washington Hospital Center, 110 Irving Street Northwest, Washington, District of Columbia 20010, USADepartment of PediatricsUniformed Services University of the Health Sciences, 4301 Jones Bridge Road, Bethesda, Maryland 20814-4712, USABiomedical Instrumental CenterUniformed Services University of the Health Sciences, 4301 Jones Bridge Road, Bethesda, Maryland 20814-4712, USACenter for Endocrine SurgeryKiev, UkraineDepartment of SurgeryMedstar Georgetown University Hospital, 3800 Reservoir Road, Washington, District of Columbia 20007, USA
| | - Aneeta Patel
- Division of EndocrinologyDepartment of Medicine, Medstar Washington Hospital Center, 110 Irving Street Northwest, Washington, District of Columbia 20010, USADepartment of PediatricsUniformed Services University of the Health Sciences, 4301 Jones Bridge Road, Bethesda, Maryland 20814-4712, USABiomedical Instrumental CenterUniformed Services University of the Health Sciences, 4301 Jones Bridge Road, Bethesda, Maryland 20814-4712, USACenter for Endocrine SurgeryKiev, UkraineDepartment of SurgeryMedstar Georgetown University Hospital, 3800 Reservoir Road, Washington, District of Columbia 20007, USA
| | - John Costello
- Division of EndocrinologyDepartment of Medicine, Medstar Washington Hospital Center, 110 Irving Street Northwest, Washington, District of Columbia 20010, USADepartment of PediatricsUniformed Services University of the Health Sciences, 4301 Jones Bridge Road, Bethesda, Maryland 20814-4712, USABiomedical Instrumental CenterUniformed Services University of the Health Sciences, 4301 Jones Bridge Road, Bethesda, Maryland 20814-4712, USACenter for Endocrine SurgeryKiev, UkraineDepartment of SurgeryMedstar Georgetown University Hospital, 3800 Reservoir Road, Washington, District of Columbia 20007, USA
| | - Dennis McDaniel
- Division of EndocrinologyDepartment of Medicine, Medstar Washington Hospital Center, 110 Irving Street Northwest, Washington, District of Columbia 20010, USADepartment of PediatricsUniformed Services University of the Health Sciences, 4301 Jones Bridge Road, Bethesda, Maryland 20814-4712, USABiomedical Instrumental CenterUniformed Services University of the Health Sciences, 4301 Jones Bridge Road, Bethesda, Maryland 20814-4712, USACenter for Endocrine SurgeryKiev, UkraineDepartment of SurgeryMedstar Georgetown University Hospital, 3800 Reservoir Road, Washington, District of Columbia 20007, USA
| | - Joanna Klubo-Gwiezdzinska
- Division of EndocrinologyDepartment of Medicine, Medstar Washington Hospital Center, 110 Irving Street Northwest, Washington, District of Columbia 20010, USADepartment of PediatricsUniformed Services University of the Health Sciences, 4301 Jones Bridge Road, Bethesda, Maryland 20814-4712, USABiomedical Instrumental CenterUniformed Services University of the Health Sciences, 4301 Jones Bridge Road, Bethesda, Maryland 20814-4712, USACenter for Endocrine SurgeryKiev, UkraineDepartment of SurgeryMedstar Georgetown University Hospital, 3800 Reservoir Road, Washington, District of Columbia 20007, USA
| | - Olexander Larin
- Division of EndocrinologyDepartment of Medicine, Medstar Washington Hospital Center, 110 Irving Street Northwest, Washington, District of Columbia 20010, USADepartment of PediatricsUniformed Services University of the Health Sciences, 4301 Jones Bridge Road, Bethesda, Maryland 20814-4712, USABiomedical Instrumental CenterUniformed Services University of the Health Sciences, 4301 Jones Bridge Road, Bethesda, Maryland 20814-4712, USACenter for Endocrine SurgeryKiev, UkraineDepartment of SurgeryMedstar Georgetown University Hospital, 3800 Reservoir Road, Washington, District of Columbia 20007, USA
| | - Victoria Hoperia
- Division of EndocrinologyDepartment of Medicine, Medstar Washington Hospital Center, 110 Irving Street Northwest, Washington, District of Columbia 20010, USADepartment of PediatricsUniformed Services University of the Health Sciences, 4301 Jones Bridge Road, Bethesda, Maryland 20814-4712, USABiomedical Instrumental CenterUniformed Services University of the Health Sciences, 4301 Jones Bridge Road, Bethesda, Maryland 20814-4712, USACenter for Endocrine SurgeryKiev, UkraineDepartment of SurgeryMedstar Georgetown University Hospital, 3800 Reservoir Road, Washington, District of Columbia 20007, USA
| | - Kenneth D Burman
- Division of EndocrinologyDepartment of Medicine, Medstar Washington Hospital Center, 110 Irving Street Northwest, Washington, District of Columbia 20010, USADepartment of PediatricsUniformed Services University of the Health Sciences, 4301 Jones Bridge Road, Bethesda, Maryland 20814-4712, USABiomedical Instrumental CenterUniformed Services University of the Health Sciences, 4301 Jones Bridge Road, Bethesda, Maryland 20814-4712, USACenter for Endocrine SurgeryKiev, UkraineDepartment of SurgeryMedstar Georgetown University Hospital, 3800 Reservoir Road, Washington, District of Columbia 20007, USA
| | - Lisa Boyle
- Division of EndocrinologyDepartment of Medicine, Medstar Washington Hospital Center, 110 Irving Street Northwest, Washington, District of Columbia 20010, USADepartment of PediatricsUniformed Services University of the Health Sciences, 4301 Jones Bridge Road, Bethesda, Maryland 20814-4712, USABiomedical Instrumental CenterUniformed Services University of the Health Sciences, 4301 Jones Bridge Road, Bethesda, Maryland 20814-4712, USACenter for Endocrine SurgeryKiev, UkraineDepartment of SurgeryMedstar Georgetown University Hospital, 3800 Reservoir Road, Washington, District of Columbia 20007, USA
| | - Leonard Wartofsky
- Division of EndocrinologyDepartment of Medicine, Medstar Washington Hospital Center, 110 Irving Street Northwest, Washington, District of Columbia 20010, USADepartment of PediatricsUniformed Services University of the Health Sciences, 4301 Jones Bridge Road, Bethesda, Maryland 20814-4712, USABiomedical Instrumental CenterUniformed Services University of the Health Sciences, 4301 Jones Bridge Road, Bethesda, Maryland 20814-4712, USACenter for Endocrine SurgeryKiev, UkraineDepartment of SurgeryMedstar Georgetown University Hospital, 3800 Reservoir Road, Washington, District of Columbia 20007, USA
| | - Vasyl Vasko
- Division of EndocrinologyDepartment of Medicine, Medstar Washington Hospital Center, 110 Irving Street Northwest, Washington, District of Columbia 20010, USADepartment of PediatricsUniformed Services University of the Health Sciences, 4301 Jones Bridge Road, Bethesda, Maryland 20814-4712, USABiomedical Instrumental CenterUniformed Services University of the Health Sciences, 4301 Jones Bridge Road, Bethesda, Maryland 20814-4712, USACenter for Endocrine SurgeryKiev, UkraineDepartment of SurgeryMedstar Georgetown University Hospital, 3800 Reservoir Road, Washington, District of Columbia 20007, USA
| |
Collapse
|
30
|
Chen W, Hu Z, Li XZ, Li JL, Xu XK, Li HG, Liu Y, Liu BH, Jia WH, Li FC. CPEB4 interacts with Vimentin and involves in progressive features and poor prognosis of patients with astrocytic tumors. Tumour Biol 2015; 37:5075-87. [PMID: 26546435 DOI: 10.1007/s13277-015-3975-0] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2015] [Accepted: 08/21/2015] [Indexed: 01/16/2023] Open
Abstract
Cytoplasmic polyadenylation element binding protein 4 (CPEB4) is a regulator of gene transcription and has been reported to be associated with biological malignancy in cancers. However, it is unclear whether CPEB4 has any clinical significance in patients with astrocytic tumors, and mechanisms that CPEB4 contribute to progression of astrocytic tumors remain largely unknown. Here, correlation between CPEB4 expression and prognosis of patients with astrocytic tumors were explored by using qPCR, WB and IHC, and X-tile, SPSS software. Cell lines U251 MG and A172 were used to study CPEB4's function and mechanisms. Co-immunoprecipitation, mass spectrometry, immunofluorescent assay, and western blot were performed to observe the interaction between CPEB4 and Vimentin. CPEB4 mRNA and protein levels were markedly elevated in 12/12 astrocytic tumors in comparison to paratumor. High expression of CPEB4 was significantly correlated with clinical progressive futures and work as an independent adverse prognostic factor for overall survival of patients with astrocytic tumors (relative risk 4.5, 95 % CI 2.1-11.2, p = 0.001). Moreover, knockdown of CPEB4 in astrocytic tumor cells inhibited their proliferation ability , clonogenicity, and invasiveness. Five candidate proteins, GRP78, Mortalin, Keratin, Vimentin, and β-actin, were identified, and the interaction between CPEB4 and Vimentin was finally confirmed. Downregulation of CPEB4 could reduce the protein expression of Vimentin. Our studies first validated that CPEB4 interacts with Vimentin and indicated that high CPEB4 expression in astrocytic tumors correlates closely with a clinically aggressive future, and that CPEB4 might represent a valuable prognostic marker for patients with astrocytic tumors.
Collapse
Affiliation(s)
- Wei Chen
- Department of Neurosurgery, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, No. 107 West Road of Riverside, Guangzhou, 510120, China
- Department of Neurosurgery, Guangzhou Women and Children's Medical Center, No. 9 Jinsui Road, Guangzhou, 510623, China
- State Key Laboratory of Oncology in South China, Sun Yat-Sen University Cancer Center, 651 Dongfeng East Road, Guangzhou, China
| | - Zhen Hu
- Department of Neurosurgery, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, No. 107 West Road of Riverside, Guangzhou, 510120, China
| | - Xi-Zhao Li
- State Key Laboratory of Oncology in South China, Sun Yat-Sen University Cancer Center, 651 Dongfeng East Road, Guangzhou, China
| | - Jun-Liang Li
- Department of Neurosurgery, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, No. 107 West Road of Riverside, Guangzhou, 510120, China
- Department of Neurosurgery, Guangzhou Women and Children's Medical Center, No. 9 Jinsui Road, Guangzhou, 510623, China
| | - Xin-Ke Xu
- Department of Neurosurgery, Guangzhou Women and Children's Medical Center, No. 9 Jinsui Road, Guangzhou, 510623, China
| | - Hai-Gang Li
- Department of Pathology, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, No. 107 West Road of Riverside, Guangzhou, 510120, China
| | - Yeqing Liu
- Department of Pathology, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, No. 107 West Road of Riverside, Guangzhou, 510120, China
| | - Bai-Hui Liu
- Department of General Surgery, The Second Affiliated Hospital of GuangDong Pharmaceutical University, No. 167 Xingang Xi Road, Guangzhou, 510275, China
| | - Wei-Hua Jia
- State Key Laboratory of Oncology in South China, Sun Yat-Sen University Cancer Center, 651 Dongfeng East Road, Guangzhou, China.
| | - Fang-Cheng Li
- Department of Neurosurgery, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, No. 107 West Road of Riverside, Guangzhou, 510120, China.
- Department of Neurosurgery, Guangzhou Women and Children's Medical Center, No. 9 Jinsui Road, Guangzhou, 510623, China.
| |
Collapse
|
31
|
Mohammadi A, Gholamhoseyniannajar A, Yaghoobi MM, Jahani Y, Vahabzadeh Z. Expression levels of heat shock protein 60 and glucose-regulated protein 78 in response to trimethylamine-N-oxide treatment in murine macrophage J774A.1 cell line. Cell Mol Biol (Noisy-le-grand) 2015; 61:94-100. [PMID: 26429299] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2015] [Accepted: 09/07/2015] [Indexed: 06/05/2023]
Abstract
Trimethylamine N-oxide (TMAO), a common metabolite in animals and humans, can induce changes in the expression or conformation of heat shock proteins. It has also been introduced as a risk factor for atherosclerosis and a biomarker for kidney problems. On the other hand, increased levels of heat shock proteins 60 and 70 KDa are associated with increased atherosclerosis risk. This study was therefore designed to evaluate the possible effect(s) of TMAO on the expression of HSP60 and GRP78 at the mRNA and protein levels. Murine macrophage J774A.1 cells were treated with micromolar concentrations of TMAO and 4-phenylbutyric acid (4-PBA), a chemical chaperon, for different time intervals. Tunicamycin was also used as a control for induction of endoplasmic reticulum stress. Tunicamycin greatly increased both mRNA and protein levels of GRP78. Similarly but to a lesser extent compared to tunicamycin, TMAO also increased mRNA and protein levels of GRP78 in a dose and time-dependent manner. In contrast, 4-PBA failed to induce any changes. Similar to GRP78, HSP60 was also increased only at mRNA level in TMAO treated cells. 4-PBA also increased HSP60 mRNA levels, whereas, tunicamycin did not show any effect on either protein or mRNA levels of HSP60. Since both heat shock proteins are stress inducible and the elevation of GRP78 is a hallmark for endoplasmic reticulum stress induction, it can be concluded that TMAO may induce endoplasmic reticulum stress or may act through elevation of these heat shock proteins.
Collapse
Affiliation(s)
- A Mohammadi
- Kerman University of Medical Sciences Department of Clinical Biochemistry, Afzalipour School of Medicine Kerman Iran
| | - A Gholamhoseyniannajar
- Kerman University of Medical Sciences Department of Clinical Biochemistry, Afzalipour School of Medicine Kerman Iran
| | - M M Yaghoobi
- Graduate University of Advanced Technology Research Department of Biotechnology, Institute of Sciences and High Technology and Environmental Sciences Kerman Iran
| | - Y Jahani
- Kerman University of Medical Sciences Social Determinants of Health Research Center, Institute of Futures Studies in Health, Department of Biostatistics and Epidemiology, School of Public Health Kerman Iran
| | - Z Vahabzadeh
- Kerman University of Medical Sciences Department of Clinical Biochemistry, Afzalipour School of Medicine Kerman Iran zakariav@yahoo.com
| |
Collapse
|
32
|
Stoianov AM, Robson DL, Hetherington AM, Sawyez CG, Borradaile NM. Elongation Factor 1A-1 Is a Mediator of Hepatocyte Lipotoxicity Partly through Its Canonical Function in Protein Synthesis. PLoS One 2015; 10:e0131269. [PMID: 26102086 PMCID: PMC4478042 DOI: 10.1371/journal.pone.0131269] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2015] [Accepted: 06/01/2015] [Indexed: 01/22/2023] Open
Abstract
Elongation factor 1A-1 (eEF1A-1) has non-canonical functions in regulation of the actin cytoskeleton and apoptosis. It was previously identified through a promoter-trap screen as a mediator of fatty acid-induced cell death (lipotoxicity), and was found to participate in this process downstream of ER stress. Since ER stress is implicated in the pathogenesis of nonalcoholic fatty liver disease (NAFLD), we investigated the mechanism of action of eEF1A-1 in hepatocyte lipotoxicity. HepG2 cells were exposed to excess fatty acids, followed by assessments of ER stress, subcellular localization of eEF1A-1, and cell death. A specific inhibitor of eEF1A-1 elongation activity, didemnin B, was used to determine whether its function in protein synthesis is involved in lipotoxicity. Within 6 h, eEF1A-1 protein was modestly induced by high palmitate, and partially re-localized from its predominant location at the ER to polymerized actin at the cell periphery. This early induction and subcellular redistribution of eEF1A-1 coincided with the onset of ER stress, and was later followed by cell death. Didemnin B did not prevent the initiation of ER stress by high palmitate, as indicated by eIF2α phosphorylation. However, consistent with sustained inhibition of eEF1A-1-dependent elongation activity, didemnin B prevented the recovery of protein synthesis and increase in GRP78 protein that are normally associated with later phases of the response to ongoing ER stress. This resulted in decreased palmitate-induced cell death. Our data implicate eEF1A-1, and its function in protein synthesis, in hepatocyte lipotoxicity.
Collapse
Affiliation(s)
- Alexandra M. Stoianov
- Department of Physiology and Pharmacology, Schulich School of Medicine and Dentistry, Western University, London, ON, Canada, N6A 5C1
| | - Debra L. Robson
- Department of Physiology and Pharmacology, Schulich School of Medicine and Dentistry, Western University, London, ON, Canada, N6A 5C1
| | - Alexandra M. Hetherington
- Department of Physiology and Pharmacology, Schulich School of Medicine and Dentistry, Western University, London, ON, Canada, N6A 5C1
| | - Cynthia G. Sawyez
- Department of Physiology and Pharmacology, Schulich School of Medicine and Dentistry, Western University, London, ON, Canada, N6A 5C1
- Department of Medicine, Western University, London, ON, Canada, N6A 5C1
- Robarts Research Institute, Western University, London, ON, Canada, N6A 5C1
| | - Nica M. Borradaile
- Department of Physiology and Pharmacology, Schulich School of Medicine and Dentistry, Western University, London, ON, Canada, N6A 5C1
- * E-mail:
| |
Collapse
|
33
|
Kuramitsu Y, Tanaka I, Wang Y, Okada F, Tokuda K, Kitagawa T, Akada J, Nakamura K. Inflammation-Related Tumor Progression in Murine Fibrosarcoma Exhibited Over-expression of Sex-determining Region Y-box 2 (Sox2) Compared to Parental Regressor Cells. Anticancer Res 2015; 35:3217-3221. [PMID: 26026081] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
BACKGROUND/AIM Tumor progression is one of the most serious issues to overcome cancer disease. As a model of inflammation-induced tumor progression, we used the regressive murine fibrosarcoma cell clone QR-32 and the progressive malignant clone QRsP-11, that was derived from QR-32. Heat shock protein beta-1 (Hspb1) is a molecular chaperone. Hspb1 plays roles in not only cell protection but also chemo-resistance, tumorigenicity and protection from apoptosis. In a recent study, we showed that Hspb1 was up-regulated in QRsP-11 compared to QR-32. MATERIALS AND METHODS We compared the expression levels of Hspb1, Hsf1 and Sox2 in QR-32 and QRsP-11 cells by means of western blotting. RESULTS Hsf1, a transcription factor for Hspb1 was not increased in QRsP-11. Sex determining region Y-box 2 (Sox2) is a transcription factor, reported to interact with Hspb1. Sox2 was up-regulated in QRsP-11 compared to QR-32. CONCLUSION These results suggest that Sox2-Hspb1 signaling is a possible pathway responsible to tumor progression of QRsP-11.
Collapse
Affiliation(s)
- Yasuhiro Kuramitsu
- Departments of Biochemistry and Functional Proteomics, Yamaguchi University Graduate School of Medicine, Ube, Yamaguchi, Japan
| | - Issei Tanaka
- Departments of Biochemistry and Functional Proteomics, Yamaguchi University Graduate School of Medicine, Ube, Yamaguchi, Japan
| | - Yufeng Wang
- Departments of Biochemistry and Functional Proteomics, Yamaguchi University Graduate School of Medicine, Ube, Yamaguchi, Japan
| | - Futoshi Okada
- Division of Pathological Biochemistry, Tottori University School of Medicine, Yonago, Japan
| | - Kazuhiro Tokuda
- Departments of Biochemistry and Functional Proteomics, Yamaguchi University Graduate School of Medicine, Ube, Yamaguchi, Japan
| | - Takao Kitagawa
- Departments of Biochemistry and Functional Proteomics, Yamaguchi University Graduate School of Medicine, Ube, Yamaguchi, Japan
| | - Junko Akada
- Departments of Biochemistry and Functional Proteomics, Yamaguchi University Graduate School of Medicine, Ube, Yamaguchi, Japan
| | - Kazuyuki Nakamura
- Departments of Biochemistry and Functional Proteomics, Yamaguchi University Graduate School of Medicine, Ube, Yamaguchi, Japan Centre of Clinical Laboratories in Tokuyama Medical Association Hospital, Shunan, Yamaguchi, Japan
| |
Collapse
|
34
|
Bae EY, Lee SW, Seong S, Cho W, Ahn JS, Cho HS. Inhibitory Effects of Verrucarin A on Tunicamycin-Induced ER Stress in FaO Rat Liver Cells. Molecules 2015; 20:8988-96. [PMID: 25996208 PMCID: PMC6272334 DOI: 10.3390/molecules20058988] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2015] [Revised: 05/02/2015] [Accepted: 05/13/2015] [Indexed: 11/16/2022] Open
Abstract
Endoplasmic reticulum (ER) stress is linked with development and maintenance of cancer, and serves as a therapeutic target for treatment of cancer. Verrucarin A, isolated from the broth of Fusarium sp. F060190, showed potential inhibitory activity on tunicamycin-induced ER stress in FaO rat liver cells. In addition, the compound decreased tunicamycin-induced GRP78 promoter activity in a dose dependent manner without inducing significant inhibition of luciferase activity and cell growth for 6 and 12 h. Moreover, the compound decreased the expression of GRP78, CHOP, XBP-1, and suppressed XBP-1, and reduced phosphorylation of IRE1α in FaO rat liver cells. This evidence suggests for the first time that verrucarin A inhibited tunicamycin-induced ER stress in FaO rat liver cells.
Collapse
Affiliation(s)
- Eun Young Bae
- LINC Project Group, Daejeon University, Daejeon 300-716, Korea.
| | - Seung Woong Lee
- Department of Chemistry, Mokwon University, Daejeon 302-729, Korea.
| | - Sin Seong
- Soram Korean Medicine Hospital, M-Tower, Gangnam-Gu, Seoul 135-879, Korea.
| | - Wonjun Cho
- Soram Bio-Medicine Research Institute (SBRI), Soram Korean Medicine Hospital, M-Tower, Gangnam-Gu, Seoul 135-879, Korea.
| | - Jong Seog Ahn
- Chemical Biology Research Center, Korea Research Institute of Bioscience and Biotechnology (KRIBB), Yeongudanjiro, Ochang, Cheongwon, Chungbuk 363-883, Korea.
| | - Hyun-Sug Cho
- Hyehwa-Liberal Arts College, Daejeon University, Daejeon 300-716, Korea.
| |
Collapse
|
35
|
Guan M, Chen X, Ma Y, Tang L, Guan L, Ren X, Yu B, Zhang W, Su B. MDA-9 and GRP78 as potential diagnostic biomarkers for early detection of melanoma metastasis. Tumour Biol 2015; 36:2973-82. [PMID: 25480418 DOI: 10.1007/s13277-014-2930-9] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2014] [Accepted: 11/28/2014] [Indexed: 10/24/2022] Open
Abstract
Metastatic melanoma, the primary cause of skin cancer-related death, warrants new diagnostic and therapeutic approaches that target the regulatory machinery at molecular level. The heterogeneity and complexity of melanoma result in the difficulty to find biomarkers and targets for early detection and treatment. Here, we investigated metastasis-associated proteins by comparing the proteomic profiles of primary cutaneous melanomas to their matched lymph node metastases, which minimizes heterogeneity among samples from different patients. Results of two-dimensional gel electrophoresis (2-DE) followed by proteomic analysis revealed eight differentially expressed proteins. Among them, seven proteins (α-enolase, cofilin-1, LDH, m-β-actin, Nm23, GRP78, and MDA-9) showed increased and one (annexin A2) showed decreased expression in metastatic lymph node tissues than in primary melanomas. MDA-9 and GRP78 were the most highly expressed proteins in lymph node metastases, which was validated by immunohistochemical staining. Moreover, exosomes from serum samples of metastatic melanoma patients contained higher levels of MDA-9 and GRP78 than those of patients without metastases, indicating the potential of MDA-9 and GRP78 to be biomarkers for early detection of metastasis. Further, small interfering RNA (siRNA)-mediated knockdown confirmed a functional role for MDA-9 and GRP78 to promote cell invasion in the A375 cells. Finally, we showed that GRP78 co-localized with MDA-9 in 293T cells. Taken together, our findings support MDA-9, co-expressed with GRP78, as a melanoma protein associated with lymph node metastasis. Investigating how MDA-9 and GRP78 interact to contribute to melanoma metastasis and disease progression could reveal new potential avenues of targeted therapy and/or useful biomarkers for diagnosis and prognosis.
Collapse
Affiliation(s)
- Ming Guan
- Department of Laboratory Medicine, Huashan Hospital, Shanghai Medical College, Fudan University, Shanghai, 200040, China
| | | | | | | | | | | | | | | | | |
Collapse
|
36
|
Leu JH, Liu KF, Chen KY, Chen SH, Wang YB, Lin CY, Lo CF. The novel white spot syndrome virus-induced gene, PmERP15, encodes an ER stress-responsive protein in black tiger shrimp, Penaeus monodon. Dev Comp Immunol 2015; 49:239-248. [PMID: 25499032 DOI: 10.1016/j.dci.2014.12.001] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/24/2014] [Revised: 11/14/2014] [Accepted: 12/01/2014] [Indexed: 06/04/2023]
Abstract
By microarray screening, we identified a white spot syndrome virus (WSSV)-strongly induced novel gene in gills of Penaeus monodon. The gene, PmERP15, encodes a putative transmembrane protein of 15 kDa, which only showed some degree of similarity (54-59%) to several unknown insect proteins, but had no hits to shrimp proteins. RT-PCR showed that PmERP15 was highly expressed in the hemocytes, heart and lymphoid organs, and that WSSV-induced strong expression of PmERP15 was evident in all tissues examined. Western blot analysis likewise showed that WSSV strongly up-regulated PmERP15 protein levels. In WSSV-infected hemocytes, immunofluorescence staining showed that PmERP15 protein was colocalized with an ER enzyme, protein disulfide isomerase, and in Sf9 insect cells, PmERP15-EGFP fusion protein colocalized with ER -Tracker™ Red dye as well. GRP78, an ER stress marker, was found to be up-regulated in WSSV-infected P. monodon, and both PmERP15 and GRP78 were up-regulated in shrimp injected with ER stress inducers tunicamycin and dithiothreitol. Silencing experiments showed that although PmERP15 dsRNA-injected shrimp succumbed to WSSV infection more rapidly, the WSSV copy number had no significant changes. These results suggest that PmERP15 is an ER stress-induced, ER resident protein, and its induction in WSSV-infected shrimp is caused by the ER stress triggered by WSSV infection. Furthermore, although PmERP15 has no role in WSSV multiplication, its presence is essential for the survival of WSSV-infected shrimp.
Collapse
Affiliation(s)
- Jiann-Horng Leu
- Institute of Marine Biology, National Taiwan Ocean University, Keelung, Taiwan; Center of Excellence for the Oceans, National Taiwan Ocean University, Keelung, Taiwan.
| | - Kuan-Fu Liu
- Tungkang Biotechnology Research Center, Fisheries Research Institute, Council of Agriculture, Pingtung, Taiwan
| | - Kuan-Yu Chen
- Institute of Marine Biology, National Taiwan Ocean University, Keelung, Taiwan
| | - Shu-Hwa Chen
- Institute of Information Science, Academia Sinica, Taipei, Taiwan
| | - Yu-Bin Wang
- Institute of Information Science, Academia Sinica, Taipei, Taiwan; Institute of Zoology, National Taiwan University, Taipei, Taiwan
| | - Chung-Yen Lin
- Institute of Information Science, Academia Sinica, Taipei, Taiwan
| | - Chu-Fang Lo
- Institute of Bioinformatics and Biosignal Transduction, College of Bioscience and Biotechnology, National Cheng Kung University, Tainan, Taiwan
| |
Collapse
|
37
|
Ebokaiwe AP, D'Cruz SC, Jubendradass R, Amala Rani JS, Mathur PP, Farombi EO. Nigerian bonny-light crude oil induces alteration in testicular stress response proteins and caspase-3 dependent apoptosis in albino wistar rats. Environ Toxicol 2015; 30:242-252. [PMID: 24106129 DOI: 10.1002/tox.21902] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/24/2012] [Revised: 08/04/2013] [Accepted: 08/05/2013] [Indexed: 06/02/2023]
Abstract
In the past few decades, there has been much concern about the adverse health effects of environmental contaminants in general and Crude Oil in particular around the Niger Delta region of Nigeria where all the crude Oil exploration is taking place. Studies have shown the repro-toxic effects of Bonny-light crude oil (BLCO). However, the insight into the mechanisms of gonadal toxicity induced by BLCO is not well known. In this study, we sought to elucidate the mechanism(s) underpinning the gonadal effects within hours of exposure to BLCO. Experimental rats were divided into five groups of four each. Animals were orally administered with a single dose of BLCO (800 mg/kg body weight) and killed at 0, 6, 12, 24, and 72 h post-treatment. The levels and time-course of induction of stress response proteins and apoptosis-related proteins like cytochorome C, caspase 3 and procaspase 9, Fas-FasL, NF-kB and TNF-α were determined to assess sequential induction of apoptosis in the rat testis. DNA damage was assessed by TUNEL assay. Administration of BLCO resulted in a significant increase in the levels of stress response proteins and apoptotis- related proteins as early as 6 h following exposure. Time-dependent elevations in the levels of the proteins were observed. The DNA damage was measured and showed time-dependent increase in the TUNEL positive cells of testicular cells. The study demonstrates induction of testicular apoptosis in adult rats following exposure to a single dose of BLCO.
Collapse
Affiliation(s)
- Azubuike P Ebokaiwe
- Drug Metabolism and Toxicology Research Laboratories, Department of Biochemistry, College of Medicine, University of Ibadan, Ibadan, Nigeria
| | | | | | | | | | | |
Collapse
|
38
|
Yang Z, Zhuang L, Szatmary P, Wen L, Sun H, Lu Y, Xu Q, Chen X. Upregulation of heat shock proteins (HSPA12A, HSP90B1, HSPA4, HSPA5 and HSPA6) in tumour tissues is associated with poor outcomes from HBV-related early-stage hepatocellular carcinoma. Int J Med Sci 2015; 12:256-63. [PMID: 25798051 PMCID: PMC4366630 DOI: 10.7150/ijms.10735] [Citation(s) in RCA: 110] [Impact Index Per Article: 12.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/06/2014] [Accepted: 01/21/2015] [Indexed: 02/07/2023] Open
Abstract
BACKGROUND Heat shock proteins (HSPs) are overexpressed in human hepatocellular carcinoma (HCC) tissue and correlate with aggressiveness and prognosis of HCC. METHODS Using the GSE14520 microarray expression profile from Gene Expression Omnibus, we compared HSP gene expression between tumour and non-tumour tissues and correlated this with outcomes in HCC patients. RESULTS We analysed 220 hepatitis B virus (HBV)-related HCC patients and 25 HSPs in this study. With the exception of HSPA4L, HSPA12A and HSPB8, members of the HSP family, including HSPH1, HSPBP1, HSPA1A, HSPA1B, HSPA1L, HSPA2, HSPA4, HSPA5, HSPA8, HSPA9, HSPAA1, HSPAB1, HSPA14, HSPB11, HSPA13, HSP90B1 and HSPBAP1, were all overexpressed in tumour tissues (all P < 0.001). In contrast, HSPB6, HSPB7, HSPA6, HSPB2 and HSPB3 were upregulated in non-tumour tissues (all P < 0.001). Multivariate analysis showed that cirrhosis (HR = 5.282, 95% CI = 1.294-21.555, P = 0.02), Barcelona Clinic liver cancer (BCLC) staging (HR = 2.151, 95% CI = 1.682-2.750, P < 0.001), HSPA12A (HR = 1.042, 95% CI = 1.003-1.082, P = 0.033) and HSP90B1 (HR = 1.001, 95% CI = 1.000-1.001, P = 0.011) were negatively associated with survival of HBV-related HCC patients. Furthermore, advanced BCLC staging (HR = 1.797, 95% CI = 1.439-2.244, P < 0.001) was also associated with earlier recurrence of HCC. The high expression of HSPA4 (HR = 1.002, 95% CI = 1.000-1.004, P = 0.019), HSPA5 (HR = 1.0, 95% CI = 1.0-1.0, P = 0.046) and HSPA6 (HR = 1.008, 95% CI = 1.001-1.015, P = 0.021) was similarly associated with HCC recurrence. CONCLUSIONS The expression of most HSPs was higher in tumour tissues than in non-tumour tissues. High BCLC staging scores, advanced cirrhosis and the overexpression of HSPA12A and HSP90B1 might be associated with poor survival from HCC, whereas high levels of HSPA4, HSPA5 and HSPA6 might be associated with earlier recurrence of HCC.
Collapse
Affiliation(s)
- Zongguo Yang
- 1. Department of Traditional Chinese Medicine, Shanghai Public Health Clinical Center, Fudan University, Shanghai 201508, China
| | - Liping Zhuang
- 2. Department of Integrative Medicine, Fudan University Shanghai Cancer Center, Shanghai 200032, China
- 3. Department of Oncology, Shanghai Medical College, Fudan University, Shanghai 200032, China
| | - Peter Szatmary
- 4. NIHR Liverpool Pancreas Biomedical Research Unit, Royal Liverpool University Hospital, Liverpool L69 3GA, UK
- 5. Department of Molecular and Clinical Cancer Medicine, Institute of Translation medicine, University of Liverpool, Liverpool L69 3GA, UK
| | - Li Wen
- 4. NIHR Liverpool Pancreas Biomedical Research Unit, Royal Liverpool University Hospital, Liverpool L69 3GA, UK
- 5. Department of Molecular and Clinical Cancer Medicine, Institute of Translation medicine, University of Liverpool, Liverpool L69 3GA, UK
| | - Hua Sun
- 1. Department of Traditional Chinese Medicine, Shanghai Public Health Clinical Center, Fudan University, Shanghai 201508, China
| | - Yunfei Lu
- 1. Department of Traditional Chinese Medicine, Shanghai Public Health Clinical Center, Fudan University, Shanghai 201508, China
| | - Qingnian Xu
- 1. Department of Traditional Chinese Medicine, Shanghai Public Health Clinical Center, Fudan University, Shanghai 201508, China
| | - Xiaorong Chen
- 1. Department of Traditional Chinese Medicine, Shanghai Public Health Clinical Center, Fudan University, Shanghai 201508, China
- ✉ Corresponding author: Xiaorong Chen, Shanghai Public Health Clinical Center, Fudan University, 2901 Caolang Road, Jinshan District, Shanghai 201508, China. Tel: +86 21 37990333; Fax: +86 21 57248762;
| |
Collapse
|
39
|
Savu D, Petcu I, Temelie M, Mustaciosu C, Moisoi N. Compartmental stress responses correlate with cell survival in bystander effects induced by the DNA damage agent, bleomycin. Mutat Res 2014; 771:13-20. [PMID: 25771975 DOI: 10.1016/j.mrfmmm.2014.11.005] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2014] [Revised: 11/09/2014] [Accepted: 11/21/2014] [Indexed: 12/18/2022]
Abstract
Physical or chemical stress applied to a cell system trigger a signal cascade that is transmitted to the neighboring cell population in a process known as bystander effect. Despite its wide occurrence in biological systems this phenomenon is mainly documented in cancer treatments. Thus understanding whether the bystander effect acts as an adaptive priming element for the neighboring cells or a sensitization factor is critical in designing treatment strategies. Here we characterize the bystander effects induced by bleomycin, a DNA-damaging agent, and compartmental stress responses associated with this phenomenon. Mouse fibroblasts were treated with increasing concentrations of bleomycin and assessed for DNA damage, cell death and induction of compartmental stress response (endoplasmic reticulum, mitochondrial and cytoplasmic stress). Preconditioned media were used to analyze bystander damage using the same end-points. Bleomycin induced bystander response was reflected primarily in increased DNA damage. This was dependent on the concentration of bleomycin and time of media conditioning. Interestingly, we found that ROS but not NO are involved in the transmission of the bystander effect. Consistent transcriptional down-regulation of the stress response factors tested (i.e. BiP, mtHsp60, Hsp70) occurred in the direct effect indicating that bleomycin might induce an arrest of transcription correlated with decreased survival. We observed the opposite trend in the bystander effect, with specific stress markers appearing increased and correlated with increased survival. These data shed new light on the potential role of stress pathways activation in bystander effects and their putative impact on the pro-survival pro-death balance.
Collapse
Affiliation(s)
- Diana Savu
- Horia Hulubei National Institute of Physics and Nuclear Engineering - IFIN HH, 30 Reactorului St., P.O. Box MG-6, Magurele, Bucharest, Romania.
| | - Ileana Petcu
- Horia Hulubei National Institute of Physics and Nuclear Engineering - IFIN HH, 30 Reactorului St., P.O. Box MG-6, Magurele, Bucharest, Romania
| | - Mihaela Temelie
- Horia Hulubei National Institute of Physics and Nuclear Engineering - IFIN HH, 30 Reactorului St., P.O. Box MG-6, Magurele, Bucharest, Romania
| | - Cosmin Mustaciosu
- Horia Hulubei National Institute of Physics and Nuclear Engineering - IFIN HH, 30 Reactorului St., P.O. Box MG-6, Magurele, Bucharest, Romania
| | - Nicoleta Moisoi
- Cell Physiology and Pharmacology Department, University of Leicester, Maurice Shock Building, University Road, Leicester LE1 9HN, UK.
| |
Collapse
|
40
|
Deryabin DG, Gryazeva IV, Davydova OK, El'-Registan GI. [Effect of alkylresorcinols on thermal denaturation and refolding of bacterial luciferase and synthesis of heat shock proteins revealed in the luminescent molecular and cellular test systems]. Mikrobiologiia 2014; 83:640-652. [PMID: 25941713] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Molecular and cellular luminescent biotests were used to reveal the effects of five alkylresorcinol homologues (C7-, C9-, C11-, C12-, and C18-AR) on the thermally induced denaturation and refolding ofbac- terial luciferases, as well as on the synthesis of heat shock proteins. The ARs activities were found to depend on their fine structure and concentration. Direct heat-protective effect of short-chain C7- and C9-AR on the chromatographically pure Photobactrium leiognathii luciferase/oxidoreductase was shown within broad range of concentration (10(-6)-10(-3) M). The long-chain ARs homologues exhibited a similar heat-protective effect at micromolar concentrations only, while their millimolarconcentrations have increased the sensitivity of the model proteins to thermal treatment. The recombinant strain Escherichia coli K12 MG1655 bearing constitutively expressed Vibrio fischieri luxAB genes was used to investigate theARs effect on the intracellular chaperone-independent refolding of bacterial luciferase. The functional activity of heat-inactivated enzyme was restored by micromolar concentrations of short-chain ARs, while long-chain homologues inhibited re- folding in the wide concentration range. The recombinant luminescent E. coli strain bearing the inducible ib- pA'::luxCDABE genetic construction was used to determine the effect of ARs on the synthesis of heat shock proteins (HSP). The preincubation mode of bacterial cells with long-chain alkylresorcinols led to dose-de- pendent stimulation of HSP synthesis (2.7 to 4 times) that confirmed some ARs function as "alarmones". Subsequent thermal treatment resulted in a 5-15-fold decrease of the following HSP induction compared to the control, while the number of viable cells opposite increased 1.5-4-fold. Thus, pretreatment of the bacte- rial cells with long-chain ARs resulted in their preadaptation to subsequent thermally induced stress. Short- chainARs caused less pronounced HSP suppression, although still was accompanied by increased heat resis- tance of the AR-pretreated bacterial cells.
Collapse
|
41
|
Ortega L, Calvillo M, Luna F, Pérez-Severiano F, Rubio-Osornio M, Guevara J, Limón ID. 17-AAG improves cognitive process and increases heat shock protein response in a model lesion with Aβ25-35. Neuropeptides 2014; 48:221-32. [PMID: 24819277 DOI: 10.1016/j.npep.2014.04.006] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/24/2013] [Revised: 03/14/2014] [Accepted: 04/15/2014] [Indexed: 11/22/2022]
Abstract
Molecular chaperones, or heat shock proteins (HSP), have been implicated in numerous neurodegenerative disorders characterized by the accumulation of protein aggregates, such as Alzheimer disease. The agglomeration of insoluble structures of Aβ is thought to be responsible for neuronal death, which in turn leads to the loss of cognitive functions. Recent findings have shown that the induction of HSP decreases the level of abnormal protein aggregates, as well as demonstrating that 17-(allylamino)-17-demethoxygeldanamycin (17-AAG), an analogue of geldanamycin (GA), increases Aβ clearance through the induction of molecular chaperones in cell culture. In light of this discovery that HSP overexpression can be neuroprotective, the search for a way to pharmacologically induce the overexpression of HSP and other associated chaperones may lead to a promising approach for the treatment of neurodegenerative diseases. The aim of our study was to evaluate both the effect of 17-AAG on the cognitive process and the HSP response in rats injected with Aβ25-35 into the CA1 of the hippocampus. The results show that the injection of Aβ caused a significant increase in the expression of the HSP involved in the regulation of cellular proteostasis. While the HSP did not reverse excitotoxic damage, given that experimental subjects showed learning and memory deficits, the administration of 17-AAG prior to the injection of Aβ25-35 did show an improvement in the behavioral assessment that correlated with the upregulation of HSP70 in subjects injured with Aβ. Overall, our data shows that the pharmacological induction of HSP using 17-AAG may be an alternative treatment of neurodegenerative diseases.
Collapse
Affiliation(s)
- Laura Ortega
- Laboratorio de Neurofarmacología, Facultad de Ciencias Químicas, Benemérita Universidad Autónoma de Puebla, Puebla 72570, Mexico; Departamento de Bioquímica, Facultad de Medicina, Universidad Nacional Autónoma de México, México D.F. 04510, Mexico.
| | - Minerva Calvillo
- Laboratorio Experimental de Enfermedades Neurodegenerativas, Instituto Nacional de Neurología y Neurocirugía, México D.F. 14269, Mexico.
| | - Félix Luna
- Laboratorio de Neurofarmacología, Facultad de Ciencias Químicas, Benemérita Universidad Autónoma de Puebla, Puebla 72570, Mexico.
| | - Francisca Pérez-Severiano
- Departamento de Neuroquímica, Instituto Nacional de Neurología y Neurocirugía, México D.F. 14269, Mexico.
| | - Moisés Rubio-Osornio
- Laboratorio Experimental de Enfermedades Neurodegenerativas, Instituto Nacional de Neurología y Neurocirugía, México D.F. 14269, Mexico.
| | - Jorge Guevara
- Departamento de Bioquímica, Facultad de Medicina, Universidad Nacional Autónoma de México, México D.F. 04510, Mexico.
| | - Ilhuicamina Daniel Limón
- Laboratorio de Neurofarmacología, Facultad de Ciencias Químicas, Benemérita Universidad Autónoma de Puebla, Puebla 72570, Mexico.
| |
Collapse
|
42
|
Maurya VK, Singh K, Sinha S. Suppression of Eis and expression of Wag31 and GroES in Mycobacterium tuberculosis cytosol under anaerobic culture conditions. Indian J Exp Biol 2014; 52:773-780. [PMID: 25141539] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
A major impediment in chemotherapy of Tuberculosis (TB) is the persistence of M. tuberculosis in a latent or dormant state, possibly perpetuated by paucity of oxygen within the lung granuloma. Proteome analysis of the anaerobically persisting microbe could therefore provide novel targets for drugs against latent TB infection (LTBI). An Indian clinical isolate of M. tuberculosis was cultured under aerobic and anaerobic conditions following Wayne's hypoxia model and its cytosolic proteins were resolved by two-dimensional gel electrophoresis (2DE). Peptide mass fingerprinting of 32 differentially expressed spots using MALDI TOF-TOF MS-MS resulted in identification of 23 proteins. Under the anaerobic culture conditions, expression of 12 of these proteins was highly suppressed (>2 fold reduction in spot volumes), with 4 of them (GrpE, CanB, MoxR1 and Eis) appearing as completely suppressed since corresponding spots were not detectable in the anaerobic sample. On the other hand, 4 proteins were highly expressed, with two of them (Wag31 and GroES) being uniquely expressed under anaerobic conditions. Suppression of Eis could make the anaerobically persisting bacilli susceptible to the aminoglycoside antibiotics which are known to be acetylated and inactivated by Eis. Although all 4 overexpressed proteins can be considered as putative drug targets for LTBI, Wag31 appears particularly interesting in view of its role in the cell wall biogenesis.
Collapse
|
43
|
Galligan JJ, Fritz KS, Backos DS, Shearn CT, Smathers RL, Jiang H, MacLean KN, Reigan PR, Petersen DR. Oxidative stress-mediated aldehyde adduction of GRP78 in a mouse model of alcoholic liver disease: functional independence of ATPase activity and chaperone function. Free Radic Biol Med 2014; 73:411-20. [PMID: 24924946 PMCID: PMC4395467 DOI: 10.1016/j.freeradbiomed.2014.06.002] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/25/2014] [Revised: 05/05/2014] [Accepted: 06/02/2014] [Indexed: 01/23/2023]
Abstract
Pathogenesis in alcoholic liver disease (ALD) is complicated and multifactorial but clearly involves oxidative stress and inflammation. Currently, conflicting reports exist regarding the role of endoplasmic reticulum (ER) stress in the etiology of ALD. The glucose-regulated protein 78 (GRP78) is the ER homolog of HSP70 and plays a critical role in the cellular response to ER stress by serving as a chaperone assisting protein folding and by regulating the signaling of the unfolded protein response (UPR). Comprising three functional domains, an ATPase, a peptide-binding, and a lid domain, GRP78 folds nascent polypeptides via the substrate-binding domain. Earlier work has indicated that the ATPase function of GRP78 is intrinsically linked and essential to its chaperone activity. Previous work in our laboratory has indicated that GRP78 and the UPR are not induced in a mouse model of ALD but that GRP78 is adducted by the lipid electrophiles 4-hydroxynonenal (4-HNE) and 4-oxononenal (4-ONE) in vivo. As impairment of GRP78 has the potential to contribute to pathogenesis in ALD, we investigated the functional consequences of aldehyde adduction on GRP78 function. Identification of 4-HNE and 4-ONE target residues in purified human GRP78 revealed a marked propensity for Lys and His adduction within the ATPase domain and a relative paucity of adduct formation within the peptide-binding domain. Consistent with these findings, we observed a concomitant dose-dependent decrease in ATP-binding and ATPase activity without any discernible impairment of chaperone function. Collectively, our data indicate that ATPase activity is not essential for GRP78-mediated chaperone activity and is consistent with the hypothesis that ER stress does not play a primary initiating role in the early stages of ALD.
Collapse
Affiliation(s)
- James J Galligan
- Department of Pharmacology, University of Colorado Anschutz Medical Campus, Aurora, CO 80045, USA
| | - Kristofer S Fritz
- Department of Pharmaceutical Sciences, University of Colorado Anschutz Medical Campus, Aurora, CO 80045, USA
| | - Donald S Backos
- Department of Pharmaceutical Sciences, University of Colorado Anschutz Medical Campus, Aurora, CO 80045, USA
| | - Colin T Shearn
- Department of Pharmaceutical Sciences, University of Colorado Anschutz Medical Campus, Aurora, CO 80045, USA
| | - Rebecca L Smathers
- Department of Pharmaceutical Sciences, University of Colorado Anschutz Medical Campus, Aurora, CO 80045, USA
| | - Hua Jiang
- Department of Pediatrics, University of Colorado Anschutz Medical Campus, Aurora, CO 80045, USA
| | - Kenneth N MacLean
- Department of Pediatrics, University of Colorado Anschutz Medical Campus, Aurora, CO 80045, USA
| | - Philip R Reigan
- Department of Pharmaceutical Sciences, University of Colorado Anschutz Medical Campus, Aurora, CO 80045, USA
| | - Dennis R Petersen
- Department of Pharmaceutical Sciences, University of Colorado Anschutz Medical Campus, Aurora, CO 80045, USA.
| |
Collapse
|
44
|
Caroprese M, Ciliberti MG, Annicchiarico G, Albenzio M, Muscio A, Sevi A. Hypothalamic-pituitary-adrenal axis activation and immune regulation in heat-stressed sheep after supplementation with polyunsaturated fatty acids. J Dairy Sci 2014; 97:4247-58. [PMID: 24792803 DOI: 10.3168/jds.2013-7696] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2013] [Accepted: 03/16/2014] [Indexed: 01/10/2024]
Abstract
The aim of this study was to assess the effects of supplementation with polyunsaturated fatty acids from different sources on immune regulation and hypothalamic-pituitary-adrenal (HPA) axis activation in heat-stressed sheep. The experiment was carried out during the summer 2012. Thirty-two Comisana ewes were divided into 4 groups (8 sheep/group): (1) supplemented with whole flaxseed (FS); (2) supplemented with Ascophyllum nodosum (AG); (3) supplemented with a combination of flaxseed and A. nodosum (FS+AG); and (4) control (C; no supplementation). On d 22 of the experiment, cortisol concentrations in sheep blood were measured after an injection of ACTH. Cellular immune response was evaluated by intradermic injection of phytohemagglutinin (PHA) at 0, 15, and 30 d of the trial. Humoral response to ovalbumin (OVA) was measured at 0, 15, and 30 d. At 0, 15, and 30 d of the experiment, blood samples were collected from each ewe to determine production of T-helper (Th)1 cytokines (IL-12 and IFN-γ), and Th2 cytokines (IL-10, IL-4, IL-13), and concentrations of heat shock proteins (HSP) 70 and 90. Ewes supplemented with flaxseed alone had greater cortisol concentrations and a longer-lasting cell-mediated immune response compared with ewes in the control and other groups. Anti-OVA IgG concentrations increased in all groups throughout the trial, even though ewes in the FS+AG group had the lowest anti-OVA IgG concentrations at 15 d. The level of IL-10 increased in all groups throughout the experiment; the FS+AG group had the lowest IL-13 concentration at 15 and 30 d. The concentration of HSP 70 increased in AG ewes at the end of the experiment and decreased in FS ewes, whereas that of HSP 90 increased in FS ewes compared with FS+AG ewes. Flaxseed supplementation was found to influence in vivo HPA activation in heat-stressed sheep, resulting in increased cortisol concentrations, probably to meet increased energy demand for thermoregulation. Flaxseed supplementation also supported Th1 response via a complex cross-talk between IL-10, IL-12, and IFN-γ production.
Collapse
Affiliation(s)
- M Caroprese
- Department of the Sciences of Agriculture, Food and Environment (SAFE), University of Foggia, Via Napoli, 25, 71122 Foggia, Italy.
| | - M G Ciliberti
- Department of the Sciences of Agriculture, Food and Environment (SAFE), University of Foggia, Via Napoli, 25, 71122 Foggia, Italy
| | - G Annicchiarico
- Council for Research and Experimentation in Agriculture, 71020 Foggia, Italy
| | - M Albenzio
- Department of the Sciences of Agriculture, Food and Environment (SAFE), University of Foggia, Via Napoli, 25, 71122 Foggia, Italy
| | - A Muscio
- Department of the Sciences of Agriculture, Food and Environment (SAFE), University of Foggia, Via Napoli, 25, 71122 Foggia, Italy
| | - A Sevi
- Department of the Sciences of Agriculture, Food and Environment (SAFE), University of Foggia, Via Napoli, 25, 71122 Foggia, Italy
| |
Collapse
|
45
|
Ahmad M, Hahn IF, Chatterjee S. GRP78 up-regulation leads to hypersensitization to cisplatin in A549 lung cancer cells. Anticancer Res 2014; 34:3493-3500. [PMID: 24982359] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
BACKGROUND GRP78 is one of the stress proteins linked to different functions in the cell. Previous reports have shown opposing functions of GRP78 in relation to drug resistance/sensitivity. In the current study, we examined the role of GRP78 in cisplatin-treated A549 cells. MATERIALS AND METHODS GRP78 was over-expressed in A549 cells with 2-deoxyglucose (2-dG) or tunicamycin (TM) treatments for 48 h and subsequently exposed to cisplatin for 2 h. Viability of these cells was determined at 0, 12, 24, 36 and 48 h afterwards. RESULTS We showed that A549 cells are hypersensitized to cisplatin following a transient GRP78 up-regulation. This hypersensitization is caused by the activation of JNK pathway and NF-κB, leading to early onset of apoptosis. CONCLUSION Induction of GRP78 can be used as a potential tool to overcome drug resistance in lung cancer cells.
Collapse
Affiliation(s)
- Mohammad Ahmad
- Department of Pharmaceutical Sciences, College of Pharmacy, North Dakota State University, Fargo, ND, U.S.A. Department of Hematology/Oncology, School of Medicine, Case Western Reserve University, Cleveland, OH, U.S.A.
| | - Insu Frank Hahn
- Department of Biochemistry and Molecular Biology, School of Medicine and Health Sciences, University of North Dakota, Grand Forks, ND, U.S.A
| | - Satadal Chatterjee
- Department of Pharmaceutical Sciences, College of Pharmacy, North Dakota State University, Fargo, ND, U.S.A. Department of Hematology/Oncology, School of Medicine, Case Western Reserve University, Cleveland, OH, U.S.A
| |
Collapse
|
46
|
Abstract
Abstract
The stress response of eukaryotic cells is characterized by changes in the metabolism of responding cells, most notably by increased synthesis of a group of proteins known as heat shock (HSP) proteins. In this paper the effect of prostaglandin A1 (PGA1), arsenite and aspirin in Aedes albopictus cells was investigated. In cells treated with PGA1 (10 μg/ml) we observed the induction of several polypeptides with molecular masses of 87, 80, 70, 57, 29 and 23 kDa. Immunoblot analysis revealed that arsenite induces a marked synthesis of HSP70, and aspirin administered during the hyperthermic treatment caused a small increase of HSP70 synthesized.
Collapse
Affiliation(s)
- M D de Meneses
- Departamento de Virologia, Instituto de Microbiologia Professor Paulo de Goés, Universidade Federal do Rio de Janeiro, Brasil
| | | |
Collapse
|
47
|
Pandey A, Vimal D, Chandra S, Saini S, Narayan G, Kar Chowdhuri D. Long-term dietary exposure to low concentration of dichloroacetic acid promoted longevity and attenuated cellular and functional declines in aged Drosophila melanogaster. Age (Dordr) 2014; 36:9628. [PMID: 24535708 PMCID: PMC4082589 DOI: 10.1007/s11357-014-9628-1] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/11/2013] [Accepted: 02/03/2014] [Indexed: 06/03/2023]
Abstract
Dichloroacetic acid (DCA), a water disinfection by-product, has attained emphasis due to its prospect for clinical use against different diseases including cancer along with negative impact on organisms. However, these reports are based on the toxicological as well clinical data using comparatively higher concentrations of DCA without much of environmental relevance. Here, we evaluate cellular as well as organismal effects of DCA at environmentally and mild clinically relevant concentrations (0.02-20.0 μg/ml) using an established model organism, Drosophila melanogaster. Flies were fed on food mixed with test concentrations of DCA for 12-48 h to examine the induction of reactive oxygen species (ROS) generation, oxidative stress (OS), heat shock genes (hsps) and cell death along with organismal responses. We also examined locomotor performance, ROS generation, glutathione (GSH) depletion, expression of GSH-synthesizing genes (gclc and gclm), and hsps at different days (0, 10, 20, 30, 40, 50) of the age in flies after prolonged DCA exposure. We observed mild OS and induction of antioxidant defense system in 20.0 μg/ml DCA-exposed organism after 24 h. After prolonged exposure to DCA, exposed organism exhibited improved survival, elevated expression of hsp27, gclc, and gclm concomitant with lower ROS generation and GSH depletion and improved locomotor performance. Conversely, hsp27 knockdown flies exhibited reversal of the above end points. The study provides evidence for the attenuation of cellular and functional decline in aged Drosophila after prolonged DCA exposure and the effect of hsp27 modulation which further incites studies towards the therapeutic application of DCA.
Collapse
Affiliation(s)
- Ashutosh Pandey
- />Embryotoxicology Section, CSIR-Indian Institute of Toxicology Research, Lucknow, 226001 Uttar Pradesh India
- />Department of Molecular and Human Genetics, Banaras Hindu University, Varanasi, 221005 Uttar Pradesh India
| | - Divya Vimal
- />Embryotoxicology Section, CSIR-Indian Institute of Toxicology Research, Lucknow, 226001 Uttar Pradesh India
| | - Swati Chandra
- />Embryotoxicology Section, CSIR-Indian Institute of Toxicology Research, Lucknow, 226001 Uttar Pradesh India
| | - Sanjay Saini
- />Embryotoxicology Section, CSIR-Indian Institute of Toxicology Research, Lucknow, 226001 Uttar Pradesh India
| | - Gopeshwar Narayan
- />Department of Molecular and Human Genetics, Banaras Hindu University, Varanasi, 221005 Uttar Pradesh India
| | - Debapratim Kar Chowdhuri
- />Embryotoxicology Section, CSIR-Indian Institute of Toxicology Research, Lucknow, 226001 Uttar Pradesh India
| |
Collapse
|
48
|
Watanabe M, Nakatsuka A, Murakami K, Inoue K, Terami T, Higuchi C, Katayama A, Teshigawara S, Eguchi J, Ogawa D, Watanabe E, Wada J, Makino H. Pemt deficiency ameliorates endoplasmic reticulum stress in diabetic nephropathy. PLoS One 2014; 9:e92647. [PMID: 24667182 PMCID: PMC3965443 DOI: 10.1371/journal.pone.0092647] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2014] [Accepted: 01/29/2014] [Indexed: 12/31/2022] Open
Abstract
Phosphatidylethanolamine N-methyltransferase (Pemt) catalyzes the methylation of phosphatidylethanolamine (PE) to phosphatidylcholine (PC) mainly in the liver. Under an obese state, the upregulation of Pemt induces endoplasmic reticulum (ER) stress by increasing the PC/PE ratio in the liver. We targeted the Pemt gene in mice to explore the therapeutic impact of Pemt on the progression of diabetic nephropathy and diabetes, which was induced by the injection of streptozotocin (STZ). Although the blood glucose levels were similar in STZ-induced diabetic Pemt+/+ and Pemt−/−mice, the glomerular hypertrophy and albuminuria in Pemt−/− mice were significantly reduced. Pemt deficiency reduced the intraglomerular F4/80-positive macrophages, hydroethidine fluorescence, tubulointerstitial fibrosis and tubular atrophy. The expression of glucose-regulated protein-78 (GRP78) was enriched in the renal tubular cells in STZ-induced diabetic mice, and this was ameliorated by Pemt deficiency. In mProx24 renal proximal tubular cells, the treatment with ER-stress inducers, tunicamycin and thapsigargin, increased the expression of GRP78, which was reduced by transfection of a shRNA lentivirus for Pemt (shRNA-Pemt). The number of apoptotic cells in the renal tubules was significantly reduced in Pemt−/− diabetic mice, and shRNA-Pemt upregulated the phosphorylation of Akt and decreased the cleavage of caspase 3 and 7 in mProx24 cells. Taken together, these findings indicate that the inhibition of Pemt activity ameliorates the ER stress associated with diabetic nephropathy in a model of type 1 diabetes and corrects the functions of the three major pathways downstream of ER stress, i.e. oxidative stress, inflammation and apoptosis.
Collapse
Affiliation(s)
- Mayu Watanabe
- Department of Medicine and Clinical Science, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Kita-ku, Okayama, Japan
| | - Atsuko Nakatsuka
- Department of Medicine and Clinical Science, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Kita-ku, Okayama, Japan
- Department of Diabetic Nephropathy, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Kita-ku, Okayama, Japan
- * E-mail: (JW); (AN)
| | - Kazutoshi Murakami
- Department of Medicine and Clinical Science, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Kita-ku, Okayama, Japan
- Department of General Medicine, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Kita-ku, Okayama, Japan
| | - Kentaro Inoue
- Department of Medicine and Clinical Science, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Kita-ku, Okayama, Japan
| | - Takahiro Terami
- Department of Medicine and Clinical Science, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Kita-ku, Okayama, Japan
| | - Chigusa Higuchi
- Department of Medicine and Clinical Science, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Kita-ku, Okayama, Japan
| | - Akihiro Katayama
- Department of Medicine and Clinical Science, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Kita-ku, Okayama, Japan
| | - Sanae Teshigawara
- Department of Medicine and Clinical Science, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Kita-ku, Okayama, Japan
| | - Jun Eguchi
- Department of Medicine and Clinical Science, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Kita-ku, Okayama, Japan
| | - Daisuke Ogawa
- Department of Diabetic Nephropathy, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Kita-ku, Okayama, Japan
| | | | - Jun Wada
- Department of Medicine and Clinical Science, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Kita-ku, Okayama, Japan
- * E-mail: (JW); (AN)
| | - Hirofumi Makino
- Department of Medicine and Clinical Science, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Kita-ku, Okayama, Japan
| |
Collapse
|
49
|
Fedoseeva IV, Rikhanov EG, Varakina NN, Rusaleva TM, Pyatrikas DV, Stepanov AV, Fedyaeva AV. [Induction of Hsp104 synthesis in Saccharomyces cerevisiae is inhibited by the petite mutation in the stationary growth phase]. Genetika 2014; 50:273-281. [PMID: 25438547] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
The elevation of Hsp104 (heat shock protein) content under heat shock plays a key role in yeast (Saccharomyces cerevisiae) cells. Hsp104 synthesis is increased under heat stress in the stationary growth phase. As shown, the loss of mitochondrial DNA (petite mutation) inhibited the induction of the Hsp104 synthesis under heat stress (39 degrees C) during the transition to the stationary growth phase. Also, the petite mutation suppressed the activity of antioxidant enzymes in the same phase, which led to lower thermotolerance. At the same time, the mutation inhibited production of the reactive oxygen species and prevented cell death under heat shock in the logarithmic growth phase. The results of this study suggest that disruption of the mitochondrial functional state suppresses the expression level of yeast nuclear genes upon transitioning to the stationary growth phase.
Collapse
|
50
|
Jain S, Vaishnav A, Kasotia A, Kumari S, Gaur RK, Choudhary DK. Rhizobacterium-mediated growth promotion and expression of stress enzymes in Glycine max L. Merrill against Fusarium wilt upon challenge inoculation. World J Microbiol Biotechnol 2014; 30:399-406. [PMID: 23933805 DOI: 10.1007/s11274-013-1455-5] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2013] [Accepted: 08/02/2013] [Indexed: 11/26/2022]
Abstract
Wilt disease of soybean caused by a very common soil-borne fungus, Fusarium oxysporum is one of the most destructive diseases of the crop. The aim of the present study was to characterize plant growth-promotion activities and induced resistance of a rhizobacterial strain for the soybean plant against F. oxysporum. Rhizobacterium strain SJ-5 exhibited plant growth-promotion characteristics and antagonistic activity against the test pathogen on dual plate assay. It was identified as a Carnobacterium sp. A 950 bp PCR product was amplified from Carnobacterium sp. strain SJ-5, using zwittermicin A self-resistance gene-specific primers (zmaR). The strain produced indole 3-acetic acid (19 μg/ml) in the presence of salt stress and exhibited growth in Dworkin and Foster salt medium amended with 1-aminocyclopropane-1-carboxylate (ACC) through ACC deaminase activity (277 nmol/mg/h) as compared to the control. Strain seeds treated with the strain significantly enhanced the quorum of healthy plants after challenge inoculation at 14 days after seeding. An increase in the activity of stress enzymes after challenge inoculation with the test pathogen is reported. Treatment with the bacterium resulted in an increase in the chlorophyll content in the leaves in comparison with challenge-inoculated plants.
Collapse
Affiliation(s)
- Shekhar Jain
- Department of Science, Faculty of Arts, Science and Commerce (FASC), Mody Institute of Technology and Science (MITS), Lakshmangarh, Sikar, 332311, Rajasthan, India
| | | | | | | | | | | |
Collapse
|