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Yamashima T, Mochly-Rosen D, Wakatsuki S, Mizukoshi E, Seike T, Larus IM, Chen CH, Takemura M, Saito H, Ohashi A. Cleavage of Hsp70.1 causes lysosomal cell death under stress conditions. Front Mol Biosci 2024; 11:1378656. [PMID: 38859931 PMCID: PMC11163108 DOI: 10.3389/fmolb.2024.1378656] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2024] [Accepted: 05/03/2024] [Indexed: 06/12/2024] Open
Abstract
Autophagy mediates the degradation of intracellular macromolecules and organelles within lysosomes. There are three types of autophagy: macroautophagy, microautophagy, and chaperone-mediated autophagy. Heat shock protein 70.1 (Hsp70.1) exhibits dual functions as a chaperone protein and a lysosomal membrane stabilizer. Since chaperone-mediated autophagy participates in the recycling of ∼30% cytosolic proteins, its disorder causes cell susceptibility to stress conditions. Cargo proteins destined for degradation such as amyloid precursor protein and tau protein are trafficked by Hsp70.1 from the cytosol into lysosomes. Hsp70.1 is composed of an N-terminal nucleotide-binding domain (NBD) and a C-terminal domain that binds to cargo proteins, termed the substrate-binding domain (SBD). The NBD and SBD are connected by the interdomain linker LL1, which modulates the allosteric structure of Hsp70.1 in response to ADP/ATP binding. After the passage of the Hsp70.1-cargo complex through the lysosomal limiting membrane, high-affinity binding of the positive-charged SBD with negative-charged bis(monoacylglycero)phosphate (BMP) at the internal vesicular membranes activates acid sphingomyelinase to generate ceramide for stabilizing lysosomal membranes. As the integrity of the lysosomal limiting membrane is critical to ensure cargo protein degradation within the acidic lumen, the disintegration of the lysosomal limiting membrane is lethal to cells. After the intake of high-fat diets, however, β-oxidation of fatty acids in the mitochondria generates reactive oxygen species, which enhance the oxidation of membrane linoleic acids to produce 4-hydroxy-2-nonenal (4-HNE). In addition, 4-HNE is produced during the heating of linoleic acid-rich vegetable oils and incorporated into the body via deep-fried foods. This endogenous and exogenous 4-HNE synergically causes an increase in its serum and organ levels to induce carbonylation of Hsp70.1 at Arg469, which facilitates its conformational change and access of activated μ-calpain to LL1. Therefore, the cleavage of Hsp70.1 occurs prior to its influx into the lysosomal lumen, which leads to lysosomal membrane permeabilization/rupture. The resultant leakage of cathepsins is responsible for lysosomal cell death, which would be one of the causative factors of lifestyle-related diseases.
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Affiliation(s)
- Tetsumori Yamashima
- Department of Psychiatry and Behavioral Science, Kanazawa University Graduate School of Medical Sciences, Kanazawa, Japan
- Department of Gastroenterology, Kanazawa University Graduate School of Medical Sciences, Kanazawa, Japan
| | - Daria Mochly-Rosen
- Department of Chemical and Systems Biology, Stanford University School of Medicine, Stanford, CA, United States
| | - Soichi Wakatsuki
- Department of Structural Biology, Stanford University School of Medicine, Stanford, CA, United States
| | - Eishiro Mizukoshi
- Department of Gastroenterology, Kanazawa University Graduate School of Medical Sciences, Kanazawa, Japan
| | - Takuya Seike
- Department of Gastroenterology, Kanazawa University Graduate School of Medical Sciences, Kanazawa, Japan
- Department of Chemical and Systems Biology, Stanford University School of Medicine, Stanford, CA, United States
| | - Isabel Maria Larus
- Department of Structural Biology, Stanford University School of Medicine, Stanford, CA, United States
| | - Che-Hong Chen
- Department of Chemical and Systems Biology, Stanford University School of Medicine, Stanford, CA, United States
| | - Miho Takemura
- Laboratory of Gene Function, Research Institute for Bioresources and Biotechnology, Ishikawa Prefectural University, Nonoichi, Japan
| | - Hisashi Saito
- Division of Collaborative Research and Development, Exploratory Oncology Research and Clinical Trial Center, National Cancer Center, Kashiwa, Japan
| | - Akihiro Ohashi
- Division of Collaborative Research and Development, Exploratory Oncology Research and Clinical Trial Center, National Cancer Center, Kashiwa, Japan
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Bodelón A, Fablet M, Siqueira de Oliveira D, Vieira C, García Guerreiro MP. Impact of Heat Stress on Transposable Element Expression and Derived Small RNAs in Drosophila subobscura. Genome Biol Evol 2023; 15:evad189. [PMID: 37847062 PMCID: PMC10627563 DOI: 10.1093/gbe/evad189] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2023] [Revised: 10/02/2023] [Accepted: 10/09/2023] [Indexed: 10/18/2023] Open
Abstract
Global warming is forcing insect populations to move and adapt, triggering adaptive genetic responses. Thermal stress is known to alter gene expression, repressing the transcription of active genes, and inducing others, such as those encoding heat shock proteins. It has also been related to the activation of some specific transposable element (TE) families. However, the actual magnitude of this stress on the whole genome and the factors involved in these genomic changes are still unclear. We studied mRNAs and small RNAs in gonads of two Drosophila subobscura populations, considered a good model to study adaptation to temperature changes. In control conditions, we found that a few genes and TE families were differentially expressed between populations, pointing out their putative involvement in the adaptation of populations to their different environments. Under heat stress, sex-specific changes in gene expression together with a trend toward overexpression, mainly of heat shock response-related genes, were observed. We did not observe large changes of TE expression nor small RNA production due to stress. Only population and sex-specific expression changes of some TE families (mainly retrotransposons), or the amounts of siRNAs and piRNAs, derived from specific TE families were observed, as well as the piRNA production from some piRNA clusters. Changes in small RNA amounts and TE expression could not be clearly correlated, indicating that other factors as chromatin modulation could also be involved. This work provides the first whole transcriptomic study including genes, TEs, and small RNAs after a heat stress in D. subobscura.
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Affiliation(s)
- Alejandra Bodelón
- Grup de Genòmica, Bioinformática i Biologia Evolutiva, Departament de Genètica i Microbiologia (Edifici C), Universitat Autònoma de Barcelona, Barcelona, Spain
| | - Marie Fablet
- Laboratoire de Biométrie et Biologie Evolutive, Université de Lyon; Université Lyon 1; CNRS; UMR 5558, Villeurbanne, France
- Institut universitaire de France, Paris, France
| | - Daniel Siqueira de Oliveira
- Laboratoire de Biométrie et Biologie Evolutive, Université de Lyon; Université Lyon 1; CNRS; UMR 5558, Villeurbanne, France
- Institute of Biosciences, Humanities and Exact Sciences, São Paulo State University (Unesp), São Paulo, Brazil
| | - Cristina Vieira
- Laboratoire de Biométrie et Biologie Evolutive, Université de Lyon; Université Lyon 1; CNRS; UMR 5558, Villeurbanne, France
| | - Maria Pilar García Guerreiro
- Grup de Genòmica, Bioinformática i Biologia Evolutiva, Departament de Genètica i Microbiologia (Edifici C), Universitat Autònoma de Barcelona, Barcelona, Spain
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Huang Z, Ito M, Zhang S, Toda T, Takeda JI, Ogi T, Ohno K. Extremely low-frequency electromagnetic field induces acetylation of heat shock proteins and enhances protein folding. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2023; 264:115482. [PMID: 37717354 DOI: 10.1016/j.ecoenv.2023.115482] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/27/2023] [Revised: 07/21/2023] [Accepted: 09/12/2023] [Indexed: 09/19/2023]
Abstract
The pervasive weak electromagnetic fields (EMF) inundate the industrialized society, but the biological effects of EMF as weak as 10 µT have been scarcely analyzed. Heat shock proteins (HSPs) are molecular chaperones that mediate a sequential stress response. HSP70 and HSP90 provide cells under undesirable situations with either assisting covalent folding of proteins or degrading improperly folded proteins in an ATP-dependent manner. Here we examined the effect of extremely low-frequency (ELF)-EMF on AML12 and HEK293 cells. Although the protein expression levels of HSP70 and HSP90 were reduced after an exposure to ELF-EMF for 3 h, acetylations of HSP70 and HSP90 were increased, which was followed by an enhanced binding affinities of HSP70 and HSP90 for HSP70/HSP90-organizing protein (HOP/STIP1). After 3 h exposure to ELF-EMF, the amount of mitochondria was reduced but the ATP level and the maximal mitochondrial oxygen consumption were increased, which was followed by the reduced protein aggregates and the increased cell viability. Thus, ELF-EMF exposure for 3 h activated acetylation of HSPs to enhance protein folding, which was returned to the basal level at 12 h. The proteostatic effects of ELF-EMF will be able to be applied to treat pathological states in humans.
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Affiliation(s)
- Zhizhou Huang
- Division of Neurogenetics, Center for Neurological Diseases and Cancer, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Mikako Ito
- Division of Neurogenetics, Center for Neurological Diseases and Cancer, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Shaochuan Zhang
- Division of Neurogenetics, Center for Neurological Diseases and Cancer, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Takuro Toda
- Division of Neurogenetics, Center for Neurological Diseases and Cancer, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Jun-Ichi Takeda
- Division of Neurogenetics, Center for Neurological Diseases and Cancer, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Tomoo Ogi
- Department of Genetics, Research Institute of Environmental Medicine (RIeM), Nagoya University, Nagoya, Japan
| | - Kinji Ohno
- Division of Neurogenetics, Center for Neurological Diseases and Cancer, Nagoya University Graduate School of Medicine, Nagoya, Japan.
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Hasnain P, Kaneko G. Phylogenetic annotation of Caenorhabditis elegans heat shock protein 70 genes. MICROPUBLICATION BIOLOGY 2022; 2022:10.17912/micropub.biology.000633. [PMID: 36120474 PMCID: PMC9478747 DOI: 10.17912/micropub.biology.000633] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/08/2022] [Revised: 08/18/2022] [Accepted: 08/31/2022] [Indexed: 12/13/2022]
Abstract
Annotation of the 70 kDa heat shock proteins (Hsp70s) has been chaotic especially in invertebrates. In this study, we validated an emerging nomenclature of Hsp70s, which can be potentially applied to all metazoan Hsp70s, by conducting a genome-wide annotation of Caenorhabditis elegans Hsp70s. Using the phylogenetic annotation, the seven canonical C. elegans Hsp70s were successfully classified into four known lineages, cytosolic A, cytosolic B, endoplasmic reticulum, and mitochondria. Motifs specific to each lineage were all conserved in the C. elegans Hsp70s. From these results, we propose new aliases of C. elegans Hsp70s that should help future annotation of this important molecular chaperone.
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Affiliation(s)
| | - Gen Kaneko
- University of Houston-Victoria, Victoria, TX, United States.
,
Correspondence to: Gen Kaneko (
)
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Fu X, Liu H, Liu J, DiSanto ME, Zhang X. The Role of Heat Shock Protein 70 Subfamily in the Hyperplastic Prostate: From Molecular Mechanisms to Therapeutic Opportunities. Cells 2022; 11:cells11132052. [PMID: 35805135 PMCID: PMC9266107 DOI: 10.3390/cells11132052] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2022] [Revised: 06/21/2022] [Accepted: 06/23/2022] [Indexed: 01/11/2023] Open
Abstract
Benign prostatic hyperplasia (BPH) is one of the most common causes of lower urinary tract symptoms (LUTS) in men, which is characterized by a noncancerous enlargement of the prostate. BPH troubles the vast majority of aging men worldwide; however, the pathogenetic factors of BPH have not been completely identified. The heat shock protein 70 (HSP70) subfamily, which mainly includes HSP70, glucose-regulated protein 78 (GRP78) and GRP75, plays a crucial role in maintaining cellular homeostasis. HSP70s are overexpressed in the course of BPH and involved in a variety of biological processes, such as cell survival and proliferation, cell apoptosis, epithelial/mesenchymal transition (EMT) and fibrosis, contributing to the development and progress of prostate diseases. These chaperone proteins also participate in oxidative stress, a cellular stress response that takes place under stress conditions. In addition, HSP70s can bind to the androgen receptor (AR) and act as a regulator of AR activity. This interaction of HSP70s with AR provides insight into the importance of the HSP70 chaperone family in BPH pathogenesis. In this review, we discuss the function of the HSP70 family in prostate glands and the role of HSP70s in the course of BPH. We also review the potential applications of HSP70s as biomarkers of prostate diseases for targeted therapies.
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Affiliation(s)
- Xun Fu
- Department of Urology, Zhongnan Hospital of Wuhan University, Wuhan 430000, China; (X.F.); (H.L.); (J.L.)
| | - Huan Liu
- Department of Urology, Zhongnan Hospital of Wuhan University, Wuhan 430000, China; (X.F.); (H.L.); (J.L.)
| | - Jiang Liu
- Department of Urology, Zhongnan Hospital of Wuhan University, Wuhan 430000, China; (X.F.); (H.L.); (J.L.)
| | - Michael E. DiSanto
- Department of Surgery and Biomedical Sciences, Cooper Medical School of Rowan University, Camden, NJ 08028, USA;
| | - Xinhua Zhang
- Department of Urology, Zhongnan Hospital of Wuhan University, Wuhan 430000, China; (X.F.); (H.L.); (J.L.)
- Correspondence:
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Li Q, Lu M, Zhang Z, Zhang R. Single-Cell Sequencing to Identify Six Heat Shock Protein (HSP) Genes-Mediated Progression Subtypes of Clear Cell Renal Cell Carcinoma. Int J Gen Med 2021; 14:3761-3773. [PMID: 34326662 PMCID: PMC8315815 DOI: 10.2147/ijgm.s318271] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2021] [Accepted: 07/06/2021] [Indexed: 02/02/2023] Open
Abstract
Background Heat shock proteins (HSPs) are widely involved in tumor occurrence and development and are prognostic markers for multiple tumors. However, the role of HSPs in clear cell renal cell carcinoma (ccRCC) remains unclear. Methods We used Cytoscape to identify hub genes in the ccRCC single-cell sequencing data set from the Gene Expression Omnibus (GEO) data repository. We identified subtypes, C1 and C2, of The Cancer Genome Atlas (TCGA) patients based on the expression of hub genes using unsupervised consensus clustering. Principal component analysis (PCA) was used to verify the clustering differences, and Kaplan-Meier (K-M) estimate was used to verify the survival differences between C1 and C2 patients. We used TIMER 2.0 and CIBERSORT to evaluate the immune cell infiltration of HSP genes and C1 and C2 patients. The R package "pRRophetic" was used to evaluate the sensitivity in C1 and C2 patients to the four first-line treatment drugs. Results We identified six hub genes (HSP90AA1, HSPH1, HSPA1B, HSPA8, and HSPA1A) encoding HSP, five of which were significantly downregulated in TCGA group, and four had a protective effect on prognosis (p <0.05). Survival analysis showed that C1 patients had a better overall survival (p <0.001). TIMER 2.0 analysis showed that three HSP genes were significantly correlated with the infiltration of CD4+ T cells and CD4+ Th1 cells (|cor|>0.5, p<0.001). CIBERSORT showed significant differences in multiple infiltrating immune cells between C1 and C2 patients. Meanwhile, the expression of PD1 was significantly lower in C1 patients than in C2 patients, and the expression of PDL1 is the another way around. Drug sensitivity analysis showed that C1 patients were more sensitive to sorafenib, pazopanib, and axitinib (p <0.001). Conclusion Our research revealed two molecular subtypes of ccRCC based on 6 HSP genes, and revealed significant differences between the two subtypes in terms of clinical prognosis, immune infiltration, and drug sensitivity.
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Affiliation(s)
- Qinke Li
- Department of Urology, The Second Affiliated Hospital of Chongqing Medical University, Chongqing, People's Republic of China
| | - Maoqing Lu
- Department of Urology, The Second Affiliated Hospital of Chongqing Medical University, Chongqing, People's Republic of China
| | - Zhechuan Zhang
- Department of Urology, The Second Affiliated Hospital of Chongqing Medical University, Chongqing, People's Republic of China
| | - Ronggui Zhang
- Department of Urology, The Second Affiliated Hospital of Chongqing Medical University, Chongqing, People's Republic of China
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Rios J, Sequeida A, Albornoz A, Budini M. Chaperone Mediated Autophagy Substrates and Components in Cancer. Front Oncol 2021; 10:614677. [PMID: 33643916 PMCID: PMC7908825 DOI: 10.3389/fonc.2020.614677] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2020] [Accepted: 12/14/2020] [Indexed: 12/15/2022] Open
Abstract
Chaperone-mediated autophagy (CMA) represents a specific way of lysosomal protein degradation and contrary to macro and microautophagy is independent of vesicles formation. The role of CMA in different physiopathological processes has been studied for several years. In cancer, alterations of the CMA principal components, Hsc70 and Lamp2A protein and mRNA levels, have been described in malignant cells. However, changes in the expression levels of these CMA components are not always associated with changes in CMA activity and their biological significance must be carefully interpreted case by case. The objective of this review is to discuss whether altering the CMA activity, CMA substrates or CMA components is accurate to avoid cancer progression. In particular, this review will discuss about the evidences in which alterations CMA components Lamp2A and Hsc70 are associated or not with changes in CMA activity in different cancer types. This analysis will help to better understand the role of CMA activity in cancer and to elucidate whether CMA can be considered as target for therapeutics. Further, it will help to define whether the attention of the investigation should be focused on Lamp2A and Hsc70 because they can have an independent role in cancer progression beyond of their participation in altered CMA activity.
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Affiliation(s)
- Javiera Rios
- Molecular and Cellular Pathology Laboratory, Dentistry Faculty, Institute in Dentistry Sciences, University of Chile, Santiago, Chile
| | - Alvaro Sequeida
- Molecular and Cellular Pathology Laboratory, Dentistry Faculty, Institute in Dentistry Sciences, University of Chile, Santiago, Chile
| | - Amelina Albornoz
- Fundación Ciencia & Vida, Santiago, Chile.,San Sebastian University, Santiago, Chile
| | - Mauricio Budini
- Molecular and Cellular Pathology Laboratory, Dentistry Faculty, Institute in Dentistry Sciences, University of Chile, Santiago, Chile.,Autophagy Research Center (ARC), Santiago, Chile
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Mishra S, Dunkerly-Eyring BL, Keceli G, Ranek MJ. Phosphorylation Modifications Regulating Cardiac Protein Quality Control Mechanisms. Front Physiol 2020; 11:593585. [PMID: 33281625 PMCID: PMC7689282 DOI: 10.3389/fphys.2020.593585] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2020] [Accepted: 09/28/2020] [Indexed: 12/12/2022] Open
Abstract
Many forms of cardiac disease, including heart failure, present with inadequate protein quality control (PQC). Pathological conditions often involve impaired removal of terminally misfolded proteins. This results in the formation of large protein aggregates, which further reduce cellular viability and cardiac function. Cardiomyocytes have an intricately collaborative PQC system to minimize cellular proteotoxicity. Increased expression of chaperones or enhanced clearance of misfolded proteins either by the proteasome or lysosome has been demonstrated to attenuate disease pathogenesis, whereas reduced PQC exacerbates pathogenesis. Recent studies have revealed that phosphorylation of key proteins has a potent regulatory role, both promoting and hindering the PQC machinery. This review highlights the recent advances in phosphorylations regulating PQC, the impact in cardiac pathology, and the therapeutic opportunities presented by harnessing these modifications.
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Affiliation(s)
- Sumita Mishra
- Division of Cardiology, Department of Medicine, The Johns Hopkins University School of Medicine, Baltimore, MD, United States
| | - Brittany L Dunkerly-Eyring
- Department of Pharmacology and Molecular Sciences, Johns Hopkins University, Baltimore, MD, United States
| | - Gizem Keceli
- Division of Cardiology, Department of Medicine, The Johns Hopkins University School of Medicine, Baltimore, MD, United States
| | - Mark J Ranek
- Division of Cardiology, Department of Medicine, The Johns Hopkins University School of Medicine, Baltimore, MD, United States
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Dudziuk G, Wronowska W, Gambin A, Szymańska Z, Rybiński M. Biologically sound formal model of Hsp70 heat induction. J Theor Biol 2019; 478:74-101. [PMID: 31181241 DOI: 10.1016/j.jtbi.2019.05.022] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2018] [Revised: 03/17/2019] [Accepted: 05/09/2019] [Indexed: 02/06/2023]
Abstract
A proper response to rapid environmental changes is essential for cell survival and requires efficient modifications in the pattern of gene expression. In this respect, a prominent example is Hsp70, a chaperone protein whose synthesis is dynamically regulated in stress conditions. In this paper, we expand a formal model of Hsp70 heat induction originally proposed in previous articles. To accurately capture various modes of heat shock effects, we not only introduce temperature dependencies in transcription to Hsp70 mRNA and in dissociation of transcriptional complexes, but we also derive a new formal expression for the temperature dependence in protein denaturation. We calibrate our model using comprehensive sets of both previously published experimental data and also biologically justified constraints. Interestingly, we obtain a biologically plausible temperature dependence of the transcriptional complex dissociation, despite the lack of biological constraints imposed in the calibration process. Finally, based on a sensitivity analysis of the model carried out in both deterministic and stochastic settings, we suggest that the regulation of the binding of transcriptional complexes plays a key role in Hsp70 induction upon heat shock. In conclusion, we provide a model that is able to capture the essential dynamics of the Hsp70 heat induction whilst being biologically sound in terms of temperature dependencies, description of protein denaturation and imposed calibration constraints.
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Affiliation(s)
- Grzegorz Dudziuk
- ICM, University of Warsaw, ul. Tyniecka 15/17, Warsaw 02-630, Poland.
| | - Weronika Wronowska
- CeNT, University of Warsaw, ul. Banacha 2c, Warsaw 02-097, Poland; Faculty of Biology, University of Warsaw, ul. Miecznikowa 1, Warsaw 02-096, Poland.
| | - Anna Gambin
- Institute of Informatics, Faculty of Mathematics, Informatics and Mechanics, University of Warsaw, ul. Banacha 2, Warsaw 02-097, Poland.
| | - Zuzanna Szymańska
- ICM, University of Warsaw, ul. Tyniecka 15/17, Warsaw 02-630, Poland; Institute of Mathematics, Polish Academy of Sciences, ul. Śniadeckich 8, Warsaw 00-656, Poland.
| | - Mikołaj Rybiński
- Institute of Informatics, Faculty of Mathematics, Informatics and Mechanics, University of Warsaw, ul. Banacha 2, Warsaw 02-097, Poland; Department of Biosystems, Science and Engineering, ETH Zurich, Basel, Switzerland.
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Chakafana G, Zininga T, Shonhai A. Comparative structure-function features of Hsp70s of Plasmodium falciparum and human origins. Biophys Rev 2019; 11:591-602. [PMID: 31280465 PMCID: PMC6682331 DOI: 10.1007/s12551-019-00563-w] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2019] [Accepted: 06/20/2019] [Indexed: 01/18/2023] Open
Abstract
The heat shock protein 70 (Hsp70) family of molecular chaperones are crucial for the survival and pathogenicity of the main agent of malaria, Plasmodium falciparum. Hsp70 is central to cellular proteostasis and some of its isoforms are essential for survival of the malaria parasite. In addition, they are also implicated in the development of antimalarial drug resistance. For these reasons, they are thought to be potential drug targets, especially in antimalarial combination therapies. However, their high sequence conservation across species presents a hurdle with respect to their selective targeting. The human genome encodes 17 Hsp70 isoforms while P. falciparum encodes for only 6. The structural architecture of Hsp70s is typically characterized by a highly conserved N-terminal nucleotide-binding domain (NBD) and a less conserved C-terminal substrate-binding domain (SBD). The two domains are connected by a highly conserved linker. In spite of their fairly high sequence conservation, Hsp70s from various species possess unique signature motifs that appear to uniquely influence their function. In addition, their cooperation with co-chaperones further regulates their functional specificity. In the current review, bioinformatics tools were used to identify conserved and unique signature motifs in Hsp70s of P. falciparum versus their human counterparts. We discuss the common and distinctive structure-function features of these proteins. This information is important towards elucidating the prospects of selective targeting of parasite heat shock proteins as part of antimalarial design efforts.
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Affiliation(s)
- Graham Chakafana
- Department of Biochemistry, University of Venda, Private Bags X5050, Thohoyandou, 0950, South Africa
| | - Tawanda Zininga
- Department of Biochemistry, University of Venda, Private Bags X5050, Thohoyandou, 0950, South Africa
| | - Addmore Shonhai
- Department of Biochemistry, University of Venda, Private Bags X5050, Thohoyandou, 0950, South Africa.
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Sequence and expression analysis of HSP70 family genes in Artemia franciscana. Sci Rep 2019; 9:8391. [PMID: 31182775 PMCID: PMC6557860 DOI: 10.1038/s41598-019-44884-y] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2019] [Accepted: 05/24/2019] [Indexed: 12/15/2022] Open
Abstract
Thus far, only one gene from the heat shock protein 70 (HSP70) family has been identified in Artemia franciscana. Here, we used the draft Artemia transcriptome database to search for other genes in the HSP70 family. Four novel HSP70 genes were identified and designated heat shock cognate 70 (HSC70), heat shock 70 kDa cognate 5 (HSC70-5), Immunoglobulin heavy-chain binding protein (BIP), and hypoxia up-regulated protein 1 (HYOU1). For each of these genes, we obtained nucleotide and deduced amino acid sequences, and reconstructed a phylogenetic tree. Expression analysis revealed that in the juvenile state, the transcription of HSP70 and HSC70 was significantly (P < 0.05) higher in a population of A. franciscana selectively bred for increased induced thermotolerance (TF12) relative to a control population (CF12). Following non-lethal heat shock treatment at the nauplius stage, transcription of HSP70, HSC70, and HSC70-5 were significantly (P < 0.05) up-regulated in TF12. In contrast, transcription of the other HSP70 family members in A. franciscana (BIP, HYOU1, and HSPA4) showed no significant (P > 0.05) induction. Gene expression analysis demonstrated that not all members of the HSP70 family are involved in the response to heat stress and selection and that especially altered expression of HSC70 plays a role in a population selected for increased thermotolerance.
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12
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Proteomic profile of histotroph during early embryo development in mares. Theriogenology 2019; 125:224-235. [DOI: 10.1016/j.theriogenology.2018.11.002] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2018] [Revised: 10/31/2018] [Accepted: 11/04/2018] [Indexed: 01/16/2023]
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Ranek MJ, Stachowski MJ, Kirk JA, Willis MS. The role of heat shock proteins and co-chaperones in heart failure. Philos Trans R Soc Lond B Biol Sci 2018; 373:rstb.2016.0530. [PMID: 29203715 DOI: 10.1098/rstb.2016.0530] [Citation(s) in RCA: 67] [Impact Index Per Article: 11.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/01/2017] [Indexed: 12/18/2022] Open
Abstract
The ongoing contractile and metabolic demands of the heart require a tight control over protein quality control, including the maintenance of protein folding, turnover and synthesis. In heart disease, increases in mechanical and oxidative stresses, post-translational modifications (e.g., phosphorylation), for example, decrease protein stability to favour misfolding in myocardial infarction, heart failure or ageing. These misfolded proteins are toxic to cardiomyocytes, directly contributing to the common accumulation found in human heart failure. One of the critical class of proteins involved in protecting the heart against these threats are molecular chaperones, including the heat shock protein70 (HSP70), HSP90 and co-chaperones CHIP (carboxy terminus of Hsp70-interacting protein, encoded by the Stub1 gene) and BAG-3 (BCL2-associated athanogene 3). Here, we review their emerging roles in the maintenance of cardiomyocytes in human and experimental models of heart failure, including their roles in facilitating the removal of misfolded and degraded proteins, inhibiting apoptosis and maintaining the structural integrity of the sarcomere and regulation of nuclear receptors. Furthermore, we discuss emerging evidence of increased expression of extracellular HSP70, HSP90 and BAG-3 in heart failure, with complementary independent roles from intracellular functions with important therapeutic and diagnostic considerations. While our understanding of these major HSPs in heart failure is incomplete, there is a clear potential role for therapeutic modulation of HSPs in heart failure with important contextual considerations to counteract the imbalance of protein damage and endogenous protein quality control systems.This article is part of the theme issue 'Heat shock proteins as modulators and therapeutic targets of chronic disease: an integrated perspective'.
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Affiliation(s)
- Mark J Ranek
- Division of Cardiology, Department of Medicine, Johns Hopkins Medical Institutions, Baltimore, MD 21205, USA
| | - Marisa J Stachowski
- Department of Cell and Molecular Physiology, Stritch School of Medicine, Loyola University, Chicago, IL 60302, USA
| | - Jonathan A Kirk
- Department of Cell and Molecular Physiology, Stritch School of Medicine, Loyola University, Chicago, IL 60302, USA
| | - Monte S Willis
- Department of Pathology and Laboratory Medicine, McAllister Heart Institute, CB#7525, Chapel Hill, NC 27599-7525, USA
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Systematic Proteomic Identification of the Heat Shock Proteins (Hsp) that Interact with Estrogen Receptor Alpha (ERα) and Biochemical Characterization of the ERα-Hsp70 Interaction. PLoS One 2016; 11:e0160312. [PMID: 27483141 PMCID: PMC4970746 DOI: 10.1371/journal.pone.0160312] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2015] [Accepted: 07/18/2016] [Indexed: 01/08/2023] Open
Abstract
Heat shock proteins (Hsps) are known to associate with estrogen receptors (ER) and regulate ER-mediated cell proliferation. Historically, the studies in this area have focused on Hsp90. However, some critical aspects of the Hsp-ERα interactions remain unclear. For example, we do not know which Hsps are the major or minor ERα interactants and whether or not different Hsp isoforms associate equally with ERα. In the present study, through a quantitative proteomic method we found that 21 Hsps and 3 Hsp cochaperones were associated with ERα in human 293T cells that were cultured in a medium containing necessary elements for cell proliferation. Four Hsp70s (Hsp70-1, Hsc70, Grp75, and Grp78) were the most abundant Hsps identified to associate with ERα, followed by two Hsp90s (Hsp90α and Hsp90β) and three Hsp110s (Hsp105, HspA4, and HspA4L). Hsp90α was found to be 2–3 times more abundant than Hsp90β in the ERα-containing complexes. Among the reported Hsp cochaperones, we detected prostaglandin E synthase 3 (p23), peptidyl-prolyl cis-trans isomerase FKBP5 (FKBP51), and E3 ubiquitin-protein ligase CHIP (CHIP). Studies with the two most abundant ERα-associated Hsps, Hsp70-1 and Hsc70, using human breast cancer MCF7 cells demonstrate that the two Hsps interacted with ERα in both the cytoplasm and nucleus when the cells were cultured in a medium supplemented with fetal bovine serum and phenol red. Interestingly, the ERα-Hsp70-1/Hsc70 interactions were detected only in the cytoplasm but not in the nucleus under hormone starvation conditions, and stimulation of the starved cells with 17β-estradiol (E2) did not change this. In addition, E2-treatment weakened the ERα-Hsc70 interaction but had no effect on the ERα-Hsp70-1 interaction. Further studies showed that significant portions of Hsp70-1 and Hsc70 were associated with transcriptionally active chromatin and inactive chromatin, and the two Hsps interacted with ERα in both forms of the chromatins in MCF7 cells.
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15
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Radons J. The human HSP70 family of chaperones: where do we stand? Cell Stress Chaperones 2016; 21:379-404. [PMID: 26865365 PMCID: PMC4837186 DOI: 10.1007/s12192-016-0676-6] [Citation(s) in RCA: 358] [Impact Index Per Article: 44.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2015] [Revised: 01/29/2016] [Accepted: 01/29/2016] [Indexed: 01/23/2023] Open
Abstract
The 70-kDa heat shock protein (HSP70) family of molecular chaperones represents one of the most ubiquitous classes of chaperones and is highly conserved in all organisms. Members of the HSP70 family control all aspects of cellular proteostasis such as nascent protein chain folding, protein import into organelles, recovering of proteins from aggregation, and assembly of multi-protein complexes. These chaperones augment organismal survival and longevity in the face of proteotoxic stress by enhancing cell viability and facilitating protein damage repair. Extracellular HSP70s have a number of cytoprotective and immunomodulatory functions, the latter either in the context of facilitating the cross-presentation of immunogenic peptides via major histocompatibility complex (MHC) antigens or in the context of acting as "chaperokines" or stimulators of innate immune responses. Studies have linked the expression of HSP70s to several types of carcinoma, with Hsp70 expression being associated with therapeutic resistance, metastasis, and poor clinical outcome. In malignantly transformed cells, HSP70s protect cells from the proteotoxic stress associated with abnormally rapid proliferation, suppress cellular senescence, and confer resistance to stress-induced apoptosis including protection against cytostatic drugs and radiation therapy. All of the cellular activities of HSP70s depend on their adenosine-5'-triphosphate (ATP)-regulated ability to interact with exposed hydrophobic surfaces of proteins. ATP hydrolysis and adenosine diphosphate (ADP)/ATP exchange are key events for substrate binding and Hsp70 release during folding of nascent polypeptides. Several proteins that bind to distinct subdomains of Hsp70 and consequently modulate the activity of the chaperone have been identified as HSP70 co-chaperones. This review focuses on the regulation, function, and relevance of the molecular Hsp70 chaperone machinery to disease and its potential as a therapeutic target.
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Affiliation(s)
- Jürgen Radons
- Scientific Consulting International, Mühldorfer Str. 64, 84503, Altötting, Germany.
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16
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Di Luca A, Hamill RM, Mullen AM, Slavov N, Elia G. Comparative Proteomic Profiling of Divergent Phenotypes for Water Holding Capacity across the Post Mortem Ageing Period in Porcine Muscle Exudate. PLoS One 2016; 11:e0150605. [PMID: 26950297 PMCID: PMC4780776 DOI: 10.1371/journal.pone.0150605] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2015] [Accepted: 02/17/2016] [Indexed: 02/06/2023] Open
Abstract
Two dimensional Difference Gel Electrophoresis (2-D DIGE) and mass spectrometry were applied to investigate the changes in metabolic proteins that occur over a seven day (day 1, 3 and 7) post mortem ageing period in porcine centrifugal exudate from divergent meat quality phenotypes. The objectives of the research were to enhance our understanding of the phenotype (water holding capacity) and search for biomarkers of this economically significant pork quality attribute. Major changes in protein abundance across nine phenotype-by-time conditions were observed. Proteomic patterns were dominated by post mortem ageing timepoint. Using a machine learning algorithm (l1-regularized logistic regression), a model was derived with the ability to discriminate between high drip and low drip phenotypes using a subset of 25 proteins with an accuracy of 63%. Models discriminating between divergent phenotypes with accuracy of 72% and 73% were also derived comparing respectively, high drip plus intermediate phenotype (considered as one phenotype) versus low drip and comparing low drip plus intermediate phenotype (considered as one phenotype) versus high drip. In all comparisons, the general classes of discriminatory proteins identified include metabolic enzymes, stress response, transport and structural proteins. In this research we have enhanced our understanding of the protein related processes underpinning this phenotype and provided strong data to work toward development of protein biomarkers for water holding capacity.
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Affiliation(s)
| | - Ruth M. Hamill
- Teagasc, Food Research Centre, Ashtown, Dublin 15, Ireland
- * E-mail:
| | | | - Nikolai Slavov
- Department of Bioengineering, Northeastern University, Boston, MA 02115, United States of America
| | - Giuliano Elia
- Mass Spectrometry Resource, UCD Conway Institute of Biomolecular and Biomedical Research, Belfield, Dublin 4, Ireland
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17
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Di Luca A, Henry M, Meleady P, O'Connor R. Label-free LC-MS analysis of HER2+ breast cancer cell line response to HER2 inhibitor treatment. ACTA ACUST UNITED AC 2015; 23:40. [PMID: 26238995 PMCID: PMC4524286 DOI: 10.1186/s40199-015-0120-y] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2015] [Accepted: 06/24/2015] [Indexed: 12/21/2022]
Abstract
BACKGROUND Human epidermal growth-factor receptor (HER)-2 is overexpressed in 25 % of breast-cancers and is associated with an aggressive form of the disease with significantly shortened disease free and overall survival. In recent years, the use of HER2-targeted therapies, monoclonal-antibodies and small molecule tyrosine-kinase inhibitors has significantly improved the clinical outcome for HER2-positive breast-cancer patients. However, only a fraction of HER2-amplified patients will respond to therapy and the use of these treatments is often limited by tumour drug insensitivity or resistance and drug toxicities. Currently there is no way to identify likely responders or rational combinations with the potential to improve HER2-focussed treatment outcome. METHODS In order to further understand the molecular mechanisms of treatment-response with HER2-inhibitors, we used a highly-optimised and reproducible quantitative label-free LC-MS strategy to characterize the proteomes of HER2-overexpressing breast-cancer cell-lines (SKBR3, BT474 and HCC1954) in response to drug-treatment with HER2-inhibitors (lapatinib, neratinib or afatinib). RESULTS Following 12 ours treatment with different HER2-inhibitors in the BT474 cell-line; compared to the untreated cells, 16 proteins changed significantly in abundance following lapatinib treatment (1 μM), 21 proteins changed significantly following neratinib treatment (150 nM) and 38 proteins changed significantly following afatinib treatment (150 nM). Whereas following 24 hours treatment with neratinib (200 nM) 46 proteins changed significantly in abundance in the HCC1954 cell-line and 23 proteins in the SKBR3 cell-line compared to the untreated cells. Analysing the data we found that, proteins like trifunctional-enzyme subunit-alpha, mitochondrial; heterogeneous nuclear ribonucleoprotein-R and lamina-associated polypeptide 2, isoform alpha were up-regulated whereas heat shock cognate 71 kDa protein was down-regulated in 3 or more comparisons. CONCLUSION This proteomic study highlights several proteins that are closely associated with early HER2-inhibitor response and will provide a valuable resource for further investigation of ways to improve efficacy of breast-cancer treatment.
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Affiliation(s)
- Alessio Di Luca
- National Institute for Cellular Biotechnology, DCU, Glasnevin, Dublin 9, Dublin, Ireland.
| | - Michael Henry
- National Institute for Cellular Biotechnology, DCU, Glasnevin, Dublin 9, Dublin, Ireland.
| | - Paula Meleady
- National Institute for Cellular Biotechnology, DCU, Glasnevin, Dublin 9, Dublin, Ireland.
| | - Robert O'Connor
- National Institute for Cellular Biotechnology, DCU, Glasnevin, Dublin 9, Dublin, Ireland. .,School of Nursing and Human Sciences, DCU, Glasnevin, Dublin 9, Dublin, Ireland.
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18
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Brandvold KR, Morimoto RI. The Chemical Biology of Molecular Chaperones--Implications for Modulation of Proteostasis. J Mol Biol 2015; 427:2931-47. [PMID: 26003923 DOI: 10.1016/j.jmb.2015.05.010] [Citation(s) in RCA: 76] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2015] [Revised: 05/09/2015] [Accepted: 05/13/2015] [Indexed: 12/14/2022]
Abstract
Protein homeostasis (proteostasis) is inextricably tied to cellular health and organismal lifespan. Aging, exposure to physiological and environmental stress, and expression of mutant and metastable proteins can cause an imbalance in the protein-folding landscape, which results in the formation of non-native protein aggregates that challenge the capacity of the proteostasis network (PN), increasing the risk for diseases associated with misfolding, aggregation, and aberrant regulation of cell stress responses. Molecular chaperones have central roles in each of the arms of the PN (protein synthesis, folding, disaggregation, and degradation), leading to the proposal that modulation of chaperone function could have therapeutic benefits for the large and growing family of diseases of protein conformation including neurodegeneration, metabolic diseases, and cancer. In this review, we will discuss the current strategies used to tune the PN through targeting molecular chaperones and assess the potential of the chemical biology of proteostasis.
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Affiliation(s)
- Kristoffer R Brandvold
- Department of Molecular Biosciences, Rice Institute for Biomedical Research, Northwestern University, Evanston, IL 60208, USA
| | - Richard I Morimoto
- Department of Molecular Biosciences, Rice Institute for Biomedical Research, Northwestern University, Evanston, IL 60208, USA.
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19
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Fontaine SN, Rauch JN, Nordhues BA, Assimon VA, Stothert AR, Jinwal UK, Sabbagh JJ, Chang L, Stevens SM, Zuiderweg ERP, Gestwicki JE, Dickey CA. Isoform-selective Genetic Inhibition of Constitutive Cytosolic Hsp70 Activity Promotes Client Tau Degradation Using an Altered Co-chaperone Complement. J Biol Chem 2015; 290:13115-27. [PMID: 25864199 DOI: 10.1074/jbc.m115.637595] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2015] [Indexed: 12/22/2022] Open
Abstract
The constitutively expressed heat shock protein 70 kDa (Hsc70) is a major chaperone protein responsible for maintaining proteostasis, yet how its structure translates into functional decisions regarding client fate is still unclear. We previously showed that Hsc70 preserved aberrant Tau, but it remained unknown if selective inhibition of the activity of this Hsp70 isoform could facilitate Tau clearance. Using single point mutations in the nucleotide binding domain, we assessed the effect of several mutations on the functions of human Hsc70. Biochemical characterization revealed that one mutation abolished both Hsc70 ATPase and refolding activities. This variant resembled the ADP-bound conformer at all times yet remained able to interact with cofactors, nucleotides, and substrates appropriately, resembling a dominant negative Hsc70 (DN-Hsc70). We then assessed the effects of this DN-Hsc70 on its client Tau. DN-Hsc70 potently facilitated Tau clearance via the proteasome in cells and brain tissue, in contrast to wild type Hsc70 that stabilized Tau. Thus, DN-Hsc70 mimics the action of small molecule pan Hsp70 inhibitors with regard to Tau metabolism. This shift in Hsc70 function by a single point mutation was the result of a change in the chaperome associated with Hsc70 such that DN-Hsc70 associated more with Hsp90 and DnaJ proteins, whereas wild type Hsc70 was more associated with other Hsp70 isoforms. Thus, isoform-selective targeting of Hsc70 could be a viable therapeutic strategy for tauopathies and possibly lead to new insights in chaperone complex biology.
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Affiliation(s)
- Sarah N Fontaine
- From the Department of Molecular Medicine, College of Medicine, USF Health Byrd Alzheimer's Institute, University of South Florida, Tampa, Florida 33613, James A. Haley Veteran's Hospital, Tampa, Florida 33612
| | - Jennifer N Rauch
- Deparment of Cell Biology, Microbiology and Molecular Biology, University of South Florida, Tampa, Florida 33620, Institute for Neurodegenerative Disease, University of California, San Francisco, California 94158, and
| | - Bryce A Nordhues
- From the Department of Molecular Medicine, College of Medicine, USF Health Byrd Alzheimer's Institute, University of South Florida, Tampa, Florida 33613, James A. Haley Veteran's Hospital, Tampa, Florida 33612
| | - Victoria A Assimon
- Institute for Neurodegenerative Disease, University of California, San Francisco, California 94158, and
| | - Andrew R Stothert
- From the Department of Molecular Medicine, College of Medicine, USF Health Byrd Alzheimer's Institute, University of South Florida, Tampa, Florida 33613
| | - Umesh K Jinwal
- Department of Pharmaceutical Science, College of Pharmacy, USF Health Byrd Alzheimer's Institute, University of South Florida, Tampa, Florida 33613
| | - Jonathan J Sabbagh
- From the Department of Molecular Medicine, College of Medicine, USF Health Byrd Alzheimer's Institute, University of South Florida, Tampa, Florida 33613, James A. Haley Veteran's Hospital, Tampa, Florida 33612
| | - Lyra Chang
- Institute for Neurodegenerative Disease, University of California, San Francisco, California 94158, and
| | - Stanley M Stevens
- Deparment of Cell Biology, Microbiology and Molecular Biology, University of South Florida, Tampa, Florida 33620
| | - Erik R P Zuiderweg
- Department of Biological Chemistry, University of Michigan, Ann Arbor, Michigan 48109
| | - Jason E Gestwicki
- Institute for Neurodegenerative Disease, University of California, San Francisco, California 94158, and
| | - Chad A Dickey
- From the Department of Molecular Medicine, College of Medicine, USF Health Byrd Alzheimer's Institute, University of South Florida, Tampa, Florida 33613, James A. Haley Veteran's Hospital, Tampa, Florida 33612,
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20
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Label-free quantitative mass spectrometry reveals a panel of differentially expressed proteins in colorectal cancer. BIOMED RESEARCH INTERNATIONAL 2015; 2015:365068. [PMID: 25699276 PMCID: PMC4324820 DOI: 10.1155/2015/365068] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/04/2014] [Accepted: 11/18/2014] [Indexed: 12/22/2022]
Abstract
To identify potential biomarkers involved in CRC, a shotgun proteomic method was applied to identify soluble proteins in three CRCs and matched normal mucosal tissues using high-performance liquid chromatography and mass spectrometry. Label-free protein profiling of three CRCs and matched normal mucosal tissues were then conducted to quantify and compare proteins. Results showed that 67 of the 784 identified proteins were linked to CRC (28 upregulated and 39 downregulated). Gene Ontology and DAVID databases were searched to identify the location and function of differential proteins that were related to the biological processes of binding, cell structure, signal transduction, cell adhesion, and so on. Among the differentially expressed proteins, tropomyosin-3 (TPM3), endoplasmic reticulum resident protein 29 (ERp29), 18 kDa cationic antimicrobial protein (CAMP), and heat shock 70 kDa protein 8 (HSPA8) were verified to be upregulated in CRC tissue and seven cell lines through western blot analysis. Furthermore, the upregulation of TPM3, ERp29, CAMP, and HSPA8 was validated in 69 CRCs byimmunohistochemistry (IHC) analysis. Combination of TPM3, ERp29, CAMP, and HSPA8 can identify CRC from matched normal mucosal achieving an accuracy of 73.2% using IHC score. These results suggest that TPM3, ERp29, CAMP, and HSPA8 are great potential IHC diagnostic biomarkers for CRC.
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21
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Marcion G, Seigneuric R, Chavanne E, Artur Y, Briand L, Hadi T, Gobbo J, Garrido C, Neiers F. C-terminal amino acids are essential for human heat shock protein 70 dimerization. Cell Stress Chaperones 2015; 20:61-72. [PMID: 25030382 PMCID: PMC4255253 DOI: 10.1007/s12192-014-0526-3] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2014] [Revised: 07/03/2014] [Accepted: 07/04/2014] [Indexed: 01/22/2023] Open
Abstract
The human inducible heat shock protein 70 (hHsp70), which is involved in several major pathologies, including neurodegenerative disorders and cancer, is a key molecular chaperone and contributes to the proper protein folding and maintenance of a large number of protein structures. Despite its role in disease, the current structural knowledge of hHsp70 is almost exclusively based on its Escherichia coli homolog, DnaK, even though these two proteins only share ~50 % amino acid identity. For the first time, we describe a complete heterologous production and purification strategy that allowed us to obtain a large amount of soluble, full-length, and non-tagged hHsp70. The protein displayed both an ATPase and a refolding activity when combined to the human Hsp40. Multi-angle light scattering and bio-layer interferometry analyses demonstrated the ability of hHsp70 to homodimerize. The role of the C-terminal part of hHsp70 was identified and confirmed by a study of a truncated version of hHsp70 that could neither dimerize nor present refolding activity.
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Affiliation(s)
- Guillaume Marcion
- INSERM, UMR 866, 7 blvd Jeanne d’Arc, 21000 Dijon, France
- Université de Bourgogne, Esplanade Erasme, Dijon, France
| | - Renaud Seigneuric
- INSERM, UMR 866, 7 blvd Jeanne d’Arc, 21000 Dijon, France
- Université de Bourgogne, Esplanade Erasme, Dijon, France
| | - Evelyne Chavanne
- Université de Bourgogne, Esplanade Erasme, Dijon, France
- Centre des Sciences du Goût et de l’Alimentation, INRA UMR 1324, CNRS UMR 6265, Université de Bourgogne, Dijon, France
| | - Yves Artur
- Université de Bourgogne, Esplanade Erasme, Dijon, France
- Centre des Sciences du Goût et de l’Alimentation, INRA UMR 1324, CNRS UMR 6265, Université de Bourgogne, Dijon, France
| | - Loïc Briand
- Centre des Sciences du Goût et de l’Alimentation, INRA UMR 1324, CNRS UMR 6265, Université de Bourgogne, Dijon, France
| | - Tarik Hadi
- INSERM, UMR 866, 7 blvd Jeanne d’Arc, 21000 Dijon, France
- Université de Bourgogne, Esplanade Erasme, Dijon, France
| | - Jessica Gobbo
- INSERM, UMR 866, 7 blvd Jeanne d’Arc, 21000 Dijon, France
- Université de Bourgogne, Esplanade Erasme, Dijon, France
- Anticancer Center Georges François Leclerc, Dijon, France
| | - Carmen Garrido
- INSERM, UMR 866, 7 blvd Jeanne d’Arc, 21000 Dijon, France
- Université de Bourgogne, Esplanade Erasme, Dijon, France
- Anticancer Center Georges François Leclerc, Dijon, France
| | - Fabrice Neiers
- Université de Bourgogne, Esplanade Erasme, Dijon, France
- Centre des Sciences du Goût et de l’Alimentation, INRA UMR 1324, CNRS UMR 6265, Université de Bourgogne, Dijon, France
- CSGA, 17 rue Sully, 21000 Dijon, France
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Manos-Turvey A, Brodsky JL, Wipf P. The Effect of Structure and Mechanism of the Hsp70 Chaperone on the Ability to Identify Chemical Modulators and Therapeutics. TOPICS IN MEDICINAL CHEMISTRY 2015. [DOI: 10.1007/7355_2015_90] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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23
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Chaperoning proteins for destruction: diverse roles of Hsp70 chaperones and their co-chaperones in targeting misfolded proteins to the proteasome. Biomolecules 2014; 4:704-24. [PMID: 25036888 PMCID: PMC4192669 DOI: 10.3390/biom4030704] [Citation(s) in RCA: 95] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2014] [Revised: 05/31/2014] [Accepted: 06/24/2014] [Indexed: 01/04/2023] Open
Abstract
Molecular chaperones were originally discovered as heat shock-induced proteins that facilitate proper folding of proteins with non-native conformations. While the function of chaperones in protein folding has been well documented over the last four decades, more recent studies have shown that chaperones are also necessary for the clearance of terminally misfolded proteins by the Ub-proteasome system. In this capacity, chaperones protect misfolded degradation substrates from spontaneous aggregation, facilitate their recognition by the Ub ligation machinery and finally shuttle the ubiquitylated substrates to the proteasome. The physiological importance of these functions is manifested by inefficient proteasomal degradation and the accumulation of protein aggregates during ageing or in certain neurodegenerative diseases, when chaperone levels decline. In this review, we focus on the diverse roles of stress-induced chaperones in targeting misfolded proteins to the proteasome and the consequences of their compromised activity. We further discuss the implications of these findings to the identification of new therapeutic targets for the treatment of amyloid diseases.
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24
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Shiota M, Tanaka M. [Novel feature of the HSP70 family]. Nihon Yakurigaku Zasshi 2014; 143:310-312. [PMID: 24919558 DOI: 10.1254/fpj.143.310] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
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25
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Jagan Mohanarao G, Mukherjee A, Banerjee D, Gohain M, Dass G, Brahma B, Datta TK, Upadhyay RC, De S. HSP70 family genes and HSP27 expression in response to heat and cold stress in vitro in peripheral blood mononuclear cells of goat (Capra hircus). Small Rumin Res 2014. [DOI: 10.1016/j.smallrumres.2013.10.014] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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26
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Wang BS, Yang Y, Yang H, Liu YZ, Hao JJ, Zhang Y, Shi ZZ, Jia XM, Zhan QM, Wang MR. PKCι counteracts oxidative stress by regulating Hsc70 in an esophageal cancer cell line. Cell Stress Chaperones 2013; 18:359-66. [PMID: 23224638 PMCID: PMC3631091 DOI: 10.1007/s12192-012-0389-4] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2012] [Revised: 11/15/2012] [Accepted: 11/27/2012] [Indexed: 11/25/2022] Open
Abstract
Using a glutathione S-transferase pull-down liquid chromatography-coupled tandem mass spectrometry approach and immunoprecipitation/immunoblot analysis, we found that heat shock cognate protein 70 (Hsc70) was involved in the complex formed by atypical protein kinase Cι (PKCι) and LC3 in the esophageal cancer cell line KYSE30. Further study indicated that Hsc70 was targeted by autophagic degradation, and knockdown of PKCι down-regulated Hsc70 by promoting autophagy. PKCι knockdown sensitized cells to oxidative stress-induced apoptosis, whereas forced PKCι expression counteracted the oxidative stress-induced apoptosis via Hsc70.
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Affiliation(s)
- Bo-Shi Wang
- />State Key Laboratory of Molecular Oncology, Cancer Institute (Hospital), Peking Union Medical College and Chinese Academy of Medical Sciences, 17 Panjiayuan Nanli, Chaoyang District, Beijing, 100021 China
| | - Yang Yang
- />State Key Laboratory of Molecular Oncology, Cancer Institute (Hospital), Peking Union Medical College and Chinese Academy of Medical Sciences, 17 Panjiayuan Nanli, Chaoyang District, Beijing, 100021 China
- />Department of Histology and Embryology, Anhui Medical University, Hefei, China
| | - Hai Yang
- />State Key Laboratory of Molecular Oncology, Cancer Institute (Hospital), Peking Union Medical College and Chinese Academy of Medical Sciences, 17 Panjiayuan Nanli, Chaoyang District, Beijing, 100021 China
| | - Yi-Zhen Liu
- />State Key Laboratory of Molecular Oncology, Cancer Institute (Hospital), Peking Union Medical College and Chinese Academy of Medical Sciences, 17 Panjiayuan Nanli, Chaoyang District, Beijing, 100021 China
| | - Jia-Jie Hao
- />State Key Laboratory of Molecular Oncology, Cancer Institute (Hospital), Peking Union Medical College and Chinese Academy of Medical Sciences, 17 Panjiayuan Nanli, Chaoyang District, Beijing, 100021 China
| | - Yu Zhang
- />State Key Laboratory of Molecular Oncology, Cancer Institute (Hospital), Peking Union Medical College and Chinese Academy of Medical Sciences, 17 Panjiayuan Nanli, Chaoyang District, Beijing, 100021 China
| | - Zhi-Zhou Shi
- />State Key Laboratory of Molecular Oncology, Cancer Institute (Hospital), Peking Union Medical College and Chinese Academy of Medical Sciences, 17 Panjiayuan Nanli, Chaoyang District, Beijing, 100021 China
| | - Xue-Mei Jia
- />Department of Histology and Embryology, Anhui Medical University, Hefei, China
| | - Qi-Min Zhan
- />State Key Laboratory of Molecular Oncology, Cancer Institute (Hospital), Peking Union Medical College and Chinese Academy of Medical Sciences, 17 Panjiayuan Nanli, Chaoyang District, Beijing, 100021 China
| | - Ming-Rong Wang
- />State Key Laboratory of Molecular Oncology, Cancer Institute (Hospital), Peking Union Medical College and Chinese Academy of Medical Sciences, 17 Panjiayuan Nanli, Chaoyang District, Beijing, 100021 China
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Liu T, Dean A, Ashwini S, Sheridan PP, Bhushan A, Lai JCK, Cao S, Daniels CK. Identification and characterization of a 66-68-kDa protein as a methotrexate-binding protein in murine leukemia L1210 cells. Cell Stress Chaperones 2013; 18:223-34. [PMID: 23090015 PMCID: PMC3581622 DOI: 10.1007/s12192-012-0376-9] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2012] [Revised: 09/20/2012] [Accepted: 09/21/2012] [Indexed: 01/07/2023] Open
Abstract
We previously observed an unidentified, tyrosine-phosphorylated, membrane-associated, 66-68-kDa protein which was present in the L1210 murine leukemia cells but not present, at least in the tyrosine-phosphorylated form, in cisplatin-methotrexate (CDDP-MTX) cross-resistant L1210/DDP cells. We purified and characterized this 66-68-kDa protein by affinity chromatography purification using its two identified properties, tyrosine phosphorylation and MTX-binding, and yielded a single band of 66-68 kDa. The purified protein was subjected to trypsin digestion and the isolated peptide fragments were sequenced and yielded two partial peptide sequences: VEIIANDQ and VTNAVVTVPAYFNDSQRQA. The two peptide sequences were used to search for the mouse genome at the national center for biotechnology information (NCBI) database for Open Reading Frame Sequence (ORFs) containing these peptides using the TBLASTN function. A single gene was identified containing both sequences, the HSPa8 gene, which codes for the heat shock family protein, HSC70. We further demonstrated that HSC70 is a MTX-binding protein using a binding assay with MTX-agarose beads followed by Western blotting. The HSC70 also existed in various cancer cell lines and showed binding to MTX. Additionally, the HSC70 protein, cloned from the L1210 murine leukemia cells, was expressed and purified from E. coli cells using a polyhistidine-tag purification system and it also showed the binding properties with MTX. DnaK, the HSC70 homologue in E. coli, also binds to MTX. By using the purified truncated HSC70 domains, we identified the adenosine triphosphatase (ATPase) domain of HSC70 that can bind to MTX. Thus, we have tentatively characterized a new, novel property of HSC70 as a MTX-binding protein.
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Affiliation(s)
- Tuoen Liu
- />Department of Internal Medicine, Division of Oncology, Washington University School of Medicine, St. Louis, MO USA
| | - Allison Dean
- />Department of Pharmacology, College of Medicine, University of Vermont, Burlington, VT USA
| | - Saint Ashwini
- />Department of Biomedical and Pharmaceutical Sciences, College of Pharmacy, Idaho State University, 970 South 5th Avenue, Campus Box 8334, Pocatello, ID 83209 USA
| | - Peter P. Sheridan
- />Department of Biological Sciences, Idaho State University, Pocatello, ID USA
- />The ISU Biomedical Research Institute, Idaho State University, Pocatello, ID USA
| | - Alok Bhushan
- />Department of Biomedical and Pharmaceutical Sciences, College of Pharmacy, Idaho State University, 970 South 5th Avenue, Campus Box 8334, Pocatello, ID 83209 USA
- />The ISU Biomedical Research Institute, Idaho State University, Pocatello, ID USA
| | - James C. K. Lai
- />Department of Biomedical and Pharmaceutical Sciences, College of Pharmacy, Idaho State University, 970 South 5th Avenue, Campus Box 8334, Pocatello, ID 83209 USA
- />The ISU Biomedical Research Institute, Idaho State University, Pocatello, ID USA
| | - Shousong Cao
- />Department of Medicine, Roswell Park Cancer Institute, Elm and Carlton Streets, Buffalo, NY 14263 USA
| | - Christopher K. Daniels
- />Department of Biomedical and Pharmaceutical Sciences, College of Pharmacy, Idaho State University, 970 South 5th Avenue, Campus Box 8334, Pocatello, ID 83209 USA
- />The ISU Biomedical Research Institute, Idaho State University, Pocatello, ID USA
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Chen DZ, Jiang JD, Zhang KQ, He HP, Di YT, Zhang Y, Cai JY, Wang L, Li SL, Yi P, Peng ZG, Hao XJ. Evaluation of anti-HCV activity and SAR study of (+)-lycoricidine through targeting of host heat-stress cognate 70 (Hsc70). Bioorg Med Chem Lett 2013; 23:2679-82. [PMID: 23511018 DOI: 10.1016/j.bmcl.2013.02.089] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2012] [Revised: 02/15/2013] [Accepted: 02/20/2013] [Indexed: 12/17/2022]
Abstract
The anti hepatitis C virus (HCV) activity of (+)-lycoricidine (1) was evaluated for the first time in this letter, yielding an EC50 value of 0.55 nmol/mL and an selection index (SI) value of 12.72. Further studies indicated that 1 induced this effect by down-regulating host heat-stress cognate 70 (Hsc70) expression. In addition, 20 derivatives were designed and synthesised to investigate the basic structure-activity relationship (SAR) of the title compound. Several of these derivatives exhibit a good inhibition of HCV, such as compound 3 (EC50=0.68 nmol/mL, SI=33.86), compound 2d (EC50=15 nmol/mL, SI=12) and compound 5 (EC50=33 nmol/mL, SI >10.91). Meanwhile, the experimental data suggest that the modification of certain groups of (+)-lycoricidine can reduce the cytotoxicity of the compounds.
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Affiliation(s)
- Duo-Zhi Chen
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, Yunnan, PR China
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Molecular Characterization and Expression Analysis of Heat Shock Cognate 70 After Heat Stress and Lipopolysaccharide Challenge in Sea Cucumber (Apostichopus japonicus). Biochem Genet 2013; 51:443-57. [DOI: 10.1007/s10528-013-9576-y] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2012] [Accepted: 09/17/2012] [Indexed: 10/27/2022]
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Characterization of heat shock protein 70 gene fromHaemonchus contortusand its expression and promoter analysis inCaenorhabditis elegans. Parasitology 2013; 140:683-94. [DOI: 10.1017/s0031182012002168] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
SUMMARYHaemonchus contortusinfections in small ruminants are of major economic importance worldwide. Heat shock proteins (HSPs) are a family of molecular chaperones that play important roles in the process of invasion and survival of nematodes. Although HSP70 has been identified in several parasitic nematodes, little is known of its distribution and function inHaemonchus contortus. The aims of this study were to characterize HSP70 fromHaemonchus contortus(designed as Hc-hsp70), express Hc-hsp70 and analyse the promoter activity inCaenorhabditis elegans. Bioinformatic analysis revealed that the open reading frame of the Hc-hsp70 cDNA encodes a 646-amino acid peptide, which is highly conserved in comparison to HSP70 in other nematodes. Phylogenetic analysis indicated thatH. contortusis closely related toCaenorhabditis. The 5′-flanking region promoted green fluorescence protein (GFP) expression in the intestine in all larval stages and adult with 2 expression patterns inC. elegans. Expression of Hc-hsp70 mRNA transcripts inC. elegansincreased following 2, 4, 6 h of heat shock and peaked at 4 h. However, its expression induced down-regulation ofhsp-1ofC. elegans. These results suggest that theH. contortushsp70 might have a similar function to that ofC. elegans hsp-1.
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Fiorini A, Sultana R, Barone E, Cenini G, Perluigi M, Mancuso C, Cai J, Klein JB, St. Clair D, Butterfield DA. Lack of p53 affects the expression of several brain mitochondrial proteins: insights from proteomics into important pathways regulated by p53. PLoS One 2012; 7:e49846. [PMID: 23209608 PMCID: PMC3507874 DOI: 10.1371/journal.pone.0049846] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2012] [Accepted: 10/12/2012] [Indexed: 01/10/2023] Open
Abstract
The tumor suppressor protein p53 has been described "as the guardian of the genome" for its crucial role in regulating the transcription of numerous genes responsible for cells cycle arrest, senescence, or apoptosis in response to various stress signals. Although p53 promotes longevity by decreasing the risk of cancer through activation of apoptosis or cellular senescence, several findings suggest that an increase of its activity may have deleterious effects leading to selected aspects of the aging phenotype and neurodegenerative diseases. There is the link between p53 and oxidative stress, the latter a crucial factor that contributes to neurodegenerative processes like Alzheimer disease (AD). In the present study, using a proteomics approach, we analyzed the impact of lack of p53 on the expression of several brain mitochondrial proteins involved in different pathways, and how lack of p53 may present a target to restore neuronal impairments. Our investigation on isolated brain mitochondria from p53((-/-)) mice also provides a better understanding of the p53-mitochondria relationship and its involvement in the development of many diseases.
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Affiliation(s)
- Ada Fiorini
- Department of Biochemical Sciences, Sapienza University of Rome, Rome, Italy
- Department of Chemistry, Center of Membrane Sciences, Sanders Brown Center on Aging, University of Kentucky, Lexington, Kentucky, United States of America
| | - Rukhsana Sultana
- Department of Chemistry, Center of Membrane Sciences, Sanders Brown Center on Aging, University of Kentucky, Lexington, Kentucky, United States of America
| | - Eugenio Barone
- Department of Biochemical Sciences, Sapienza University of Rome, Rome, Italy
- Institute of Pharmacology, Catholic University School of Medicine, Rome, Italy
| | - Giovanna Cenini
- Department of Chemistry, Center of Membrane Sciences, Sanders Brown Center on Aging, University of Kentucky, Lexington, Kentucky, United States of America
| | - Marzia Perluigi
- Department of Biochemical Sciences, Sapienza University of Rome, Rome, Italy
| | - Cesare Mancuso
- Institute of Pharmacology, Catholic University School of Medicine, Rome, Italy
| | - Jian Cai
- Division of Nephrology, Department of Medicine and Proteomics Center, University of Louisville, Louisville, Kentucky, United States of America
| | - Jon B. Klein
- Division of Nephrology, Department of Medicine and Proteomics Center, University of Louisville, Louisville, Kentucky, United States of America
| | - Daret St. Clair
- Graduate Center for Toxicology, University of Kentucky, Lexington, Kentucky, United States of America
| | - D. Allan Butterfield
- Department of Chemistry, Center of Membrane Sciences, Sanders Brown Center on Aging, University of Kentucky, Lexington, Kentucky, United States of America
- * E-mail:
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Zagouri F, Sergentanis TN, Gazouli M, Tsigginou A, Dimitrakakis C, Papaspyrou I, Eleutherakis-Papaiakovou E, Chrysikos D, Theodoropoulos G, Zografos GC, Antsaklis A, Dimopoulos AM, Papadimitriou CA. HSP90, HSPA8, HIF-1 alpha and HSP70-2 polymorphisms in breast cancer: a case-control study. Mol Biol Rep 2012; 39:10873-9. [PMID: 23065205 DOI: 10.1007/s11033-012-1984-2] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2012] [Accepted: 10/01/2012] [Indexed: 12/11/2022]
Abstract
This case control study aims to investigate the role of HSP90 Gln488His (C > G), HSP70-2 P1/P2, HIF-1 alpha C1772T and HSPA8 intronic 1541-1542delGT polymorphisms as potential risk factors and/or prognostic markers for breast cancer. 113 consecutive incident cases of histologically confirmed ductal breast cancer and 124 healthy cases were recruited. The above mentioned polymorphisms were genotyped; multivariate logistic regression was performed. HSP90 GG (His/His) genotype was associated with elevated breast cancer risk. Similarly, the allele dose-response model pointed to increase in breast cancer risk per G allele. HSP70-2 P1/P2, HSPA8 intronic 1541-1542delGT and HIF-1 alpha polymorphisms were not associated with breast cancer risk, as evidenced by the dose-response allele models. The positive association between HSP90 G allele and breast cancer risk seemed to pertain to both premenopausal and postmenopausal women. With respect to survival analysis, none of the aforementioned polymorphisms was associated with either disease-free survival or overall survival. HSP90α Gln488His polymorphism seems to be a risk factor for breast cancer. On the other hand, our study did not point to excess risk conferred by HSPA8 1541-1542delGT, Hsp70-2 P1/P2 and HIF-1α C1772T.
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Affiliation(s)
- Flora Zagouri
- Department of Clinical Therapeutics, Alexandra Hospital, University of Athens, Athens, Greece
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Koshiyama A, Ichibangase T, Imai K. Comprehensive fluorogenic derivatization-liquid chromatography/tandem mass spectrometry proteomic analysis of colorectal cancer cell to identify biomarker candidate. Biomed Chromatogr 2012; 27:440-50. [PMID: 22991145 DOI: 10.1002/bmc.2811] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2012] [Revised: 08/06/2012] [Accepted: 08/06/2012] [Indexed: 01/28/2023]
Abstract
Existing colorectal cancer biomarkers are insufficient for providing a quick and accurate diagnosis, which is critical for a good prognosis. More appropriate biomarkers are thus needed. To identify new colorectal cancer biomarker candidates, we conducted a comprehensive differential proteomic analysis of six cancer cell lines and a normal cell line, utilizing a fluorogenic derivatization-liquid chromatography-tandem mass spectrometry (FD-LC-MS/MS) approach. Two sets of intracellular biomarker candidates were identified: one for colorectal cancer, and the other for metastatic colorectal cancer. Our results suggest that cooperative expression of FABP5 and cyclophilin A might be linked to Her2 signaling. Upregulation of LDHB and downregulation of GAPDH suggest the existence of a specific nonglycolytic energy production pathway in metastatic colorectal cancer cells. Downregulation of 14-3-3ζ/δ, cystatin-B, Ran and thioredoxin could be a result of their secretion, which then stimulates metastasis via activity in the sera and ascitic fluids. We propose a possible flow scheme to describe the dynamics of protein expression in colorectal cancer cells leading to tumor progression and metastasis via cell proliferation, angiogenesis, disorganization of actin filaments and epithelial-mesenchymal transition. Our results suggest that colorectal tumor progression may be regulated by signaling mediated by Her2, hypoxia, and TGFβ.
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Affiliation(s)
- Akiyo Koshiyama
- Research Institute of Pharmaceutical Sciences, Musashino University, 1-1-20 Shinmachi, Nishitokyo-shi, Tokyo, Japan
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Comprehensive review on the HSC70 functions, interactions with related molecules and involvement in clinical diseases and therapeutic potential. Pharmacol Ther 2012; 136:354-74. [PMID: 22960394 DOI: 10.1016/j.pharmthera.2012.08.014] [Citation(s) in RCA: 193] [Impact Index Per Article: 16.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2012] [Accepted: 08/14/2012] [Indexed: 12/28/2022]
Abstract
Heat shock cognate protein 70 (HSC70) is a constitutively expressed molecular chaperone which belongs to the heat shock protein 70 (HSP70) family. HSC70 shares some of the structural and functional similarity with HSP70. HSC70 also has different properties compared with HSP70 and other heat shock family members. HSC70 performs its full functions by the cooperation of co-chaperones. It interacts with many other molecules as well and regulates various cellular functions. It is also involved in various diseases and may become a biomarker for diagnosis and potential therapeutic targets for design, discovery, and development of novel drugs to treat various diseases. In this article, we provide a comprehensive review on HSC70 from the literatures including the basic general information such as classification, structure and cellular location, genetics and function, as well as its protein association and interaction with other proteins. In addition, we also discussed the relationship of HSC70 and related clinical diseases such as cancer, cardiovascular, neurological, hepatic and many other diseases and possible therapeutic potential and highlight the progress and prospects of research in this field. Understanding the functions of HSC70 and its interaction with other molecules will help us to reveal other novel properties of this protein. Scientists may be able to utilize this protein as a biomarker and therapeutic target to make significant advancement in scientific research and clinical setting in the future.
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35
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Yabu T, Imamura S, Mohammed MS, Touhata K, Minami T, Terayama M, Yamashita M. Differential gene expression of HSC70/HSP70 in yellowtail cells in response to chaperone-mediated autophagy. FEBS J 2011; 278:673-85. [DOI: 10.1111/j.1742-4658.2010.07989.x] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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36
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Inoue Y, Aizaki H, Hara H, Matsuda M, Ando T, Shimoji T, Murakami K, Masaki T, Shoji I, Homma S, Matsuura Y, Miyamura T, Wakita T, Suzuki T. Chaperonin TRiC/CCT participates in replication of hepatitis C virus genome via interaction with the viral NS5B protein. Virology 2010; 410:38-47. [PMID: 21093005 DOI: 10.1016/j.virol.2010.10.026] [Citation(s) in RCA: 56] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2010] [Revised: 07/18/2010] [Accepted: 10/15/2010] [Indexed: 12/12/2022]
Abstract
To identify the host factors implicated in the regulation of hepatitis C virus (HCV) genome replication, we performed comparative proteome analyses of HCV replication complex (RC)-rich membrane fractions prepared from cells harboring genome-length bicistronic HCV RNA at the exponential and stationary growth phases. We found that the eukaryotic chaperonin T-complex polypeptide 1 (TCP1)-ring complex/chaperonin-containing TCP1 (TRiC/CCT) plays a role in the replication possibly through an interaction between subunit CCT5 and the viral RNA polymerase NS5B. siRNA-mediated knockdown of CCT5 suppressed RNA replication and production of the infectious virus. Gain-of-function activity was shown following co-transfection with whole eight TRiC/CCT subunits. HCV RNA synthesis was inhibited by an anti-CCT5 antibody in a cell-free assay. These suggest that recruitment of the chaperonin by the viral nonstructural proteins to the RC, which potentially facilitate folding of the RC component(s) into the mature active form, may be important for efficient replication of the HCV genome.
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Affiliation(s)
- Yasushi Inoue
- Department of Virology II, National Institute of Infectious Diseases, Tokyo 162-8640, Japan
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Shiota M, Saiwai H, Mun S, Harada A, Okada S, Odawara J, Tanaka M, Iwao H, Ohkawa Y. Generation of a Rat Monoclonal Antibody Specific for Heat Shock Cognate Protein 70. Hybridoma (Larchmt) 2010; 29:453-6. [DOI: 10.1089/hyb.2010.0024] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Masayuki Shiota
- Department of Pharmacology, Osaka City University Medical School, Osaka, Japan
| | - Hirokazu Saiwai
- Department of Epigenetics, SSP Stem Cell Unit, Faculty of Medicine, Kyushu University, Fukuoka, Japan
| | - Saya Mun
- Department of Pharmacology, Osaka City University Medical School, Osaka, Japan
| | - Akihito Harada
- Department of Epigenetics, SSP Stem Cell Unit, Faculty of Medicine, Kyushu University, Fukuoka, Japan
| | - Seiji Okada
- Department of Epigenetics, SSP Stem Cell Unit, Faculty of Medicine, Kyushu University, Fukuoka, Japan
| | - Jun Odawara
- Department of Epigenetics, SSP Stem Cell Unit, Faculty of Medicine, Kyushu University, Fukuoka, Japan
| | - Masako Tanaka
- Department of Pharmacology, Osaka City University Medical School, Osaka, Japan
| | - Hiroshi Iwao
- Department of Pharmacology, Osaka City University Medical School, Osaka, Japan
| | - Yasuyuki Ohkawa
- Department of Epigenetics, SSP Stem Cell Unit, Faculty of Medicine, Kyushu University, Fukuoka, Japan
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38
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Peng ZG, Fan B, Du NN, Wang YP, Gao LM, Li YH, Li YH, Liu F, You XF, Han YX, Zhao ZY, Cen S, Li JR, Song DQ, Jiang JD. Small molecular compounds that inhibit hepatitis C virus replication through destabilizing heat shock cognate 70 messenger RNA. Hepatology 2010; 52:845-53. [PMID: 20593456 DOI: 10.1002/hep.23766] [Citation(s) in RCA: 47] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
UNLABELLED Host heat shock cognate 70 (Hsc70) protein is packaged into hepatitis C viral (HCV) particles as a structural component of the virus in the assembly process. It helps HCV RNA release into the cytoplasm in the next infection cycle. The goal of this study is to investigate whether chemically down-regulating host Hsc70 expression could be a novel strategy to interrupt HCV replication. Compounds were screened with an Hsc70 messenger RNA (mRNA) assay. IMB-DM122 was found to be an effective and safe inhibitor for Hsc70 mRNA/protein expression in human hepatocytes. IMB-DM122 inhibited HCV replication through destabilization of Hsc70 mRNA, and the half-life of host Hsc70 mRNA was reduced by 78% after the compound treatment. The Hsc70 mRNA 3' untranslated region sequence is the element responsible for the effect of IMB-DM122 on Hsc70 mRNA. The compound appears to be highly efficient in inhibiting Hsc70-related HCV replication. Treatment of the HCV-infected hepatocytes with IMB-DM122 reduced the virion encapsidation of Hsc70, and therefore disrupted HCV replication and the infection cycle. IMB-DM122 showed considerable good safety in vitro as well as in vivo with no indication of harmful effect on liver and kidney functions. CONCLUSION Hsc70 might be a new drug target and mechanism to inhibit HCV proliferation.
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Affiliation(s)
- Zong-Gen Peng
- Institute of Medicinal Biotechnology, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
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Sfar S, Saad H, Mosbah F, Chouchane L. Synergistic effect and VEGF/HSP70-hom haplotype analysis: relationship to prostate cancer risk and clinical outcome. Hum Immunol 2010; 71:377-82. [PMID: 20096741 DOI: 10.1016/j.humimm.2010.01.017] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2009] [Revised: 01/10/2010] [Accepted: 01/15/2010] [Indexed: 11/17/2022]
Abstract
Prostate cancer (PCa) is a complex disorder resulting from the combined effects of multiple environmental and genetic factors. Our previous single-locus analysis showed that VEGF and HSP70-hom polymorphisms were significantly associated with PCa susceptibility and prognosis. Both genes encoding these proteins were located on chromosome 6p21, and combining the neighboring single nucleotide polymorphisms (SNPs) into haplotypes may increase the association with the disease. Three tagging polymorphisms, the HSP70-hom 2437 T/C, the VEGF-1154 G/A, and the VEGF-634 G/C SNPs were genotyped in 101 cases and 80 controls. For the combined analysis of VEGF and HSP70-hom, we found a positive gradient in the odds ratios (ORs) related to the number of high-risk genotypes with a 3.53-fold increase of prostate carcinoma risk (OR = 3.53; p = 0.015). Furthermore, the TAG and CAG haplotypes at positions HSP70-hom, VEGF -1154 and VEGF -634 exhibited a two-fold (OR = 0.46; p = 0.014) and a seven-fold (OR = 0.14; p = 0.00005) reduction in PCa risk, respectively. Regarding PCa prognosis, the TAG haplotype had a negative association with the aggressive phenotype as defined by the histopathological grade (OR = 0.28; p = 0.006). Our findings confirm the role of at-risk haplotype across the HSP70-hom/VEGF gene cluster in determining susceptibility to PCa.
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Affiliation(s)
- Sana Sfar
- Department of Molecular Immuno-Oncology, Faculty of Medicine, Monastir, Tunisia.
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40
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Nirdé P, Derocq D, Maynadier M, Chambon M, Basile I, Gary-Bobo M, Garcia M. Heat shock cognate 70 protein secretion as a new growth arrest signal for cancer cells. Oncogene 2009; 29:117-27. [PMID: 19802014 DOI: 10.1038/onc.2009.311] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Earlier studies indicated that density-arrested cancer cells released an unidentified growth inhibitor whose secretion was prevented by overexpression of the lysosomal protease cathepsin D (cath D). In this study, this growth inhibitor was purified by affinity chromatography and identified as the heat shock cognate 70 protein (hsc70) based on its peptide microsequencing and specific antibody recognition. Among intracellular proteins, including other heat shock proteins, only constitutive hsc70 was secreted in response to the high-cell density. Moreover, hsc70 secretion from cancer cells was generated by serum deprivation, whereas its cellular concentration did not change. Prevention of Hsc70 secretion by cath D overexpression was associated with the formation of multilayer cell cultures, thus indicating a loss of contact inhibition. In addition, we showed that supplementing the culture medium with purified hsc70 inhibited cell proliferation in the nanomolar range. Conversely, removal of this extracellular hsc70 from the medium by either retention on ADP-agarose or competition at the Hsc70 binding site restored cell proliferation. Hsc70 appears active in human breast cancer cells and hypersecreted by direct cath D inhibition. These results suggest a new role of this secreted hsc70 chaperone in cell proliferation that might account for the higher tumor growth of cancer cells overexpressing cath D.
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Affiliation(s)
- P Nirdé
- IRCM, institut de Recherche en Cancérologie de Montpellier, Montpellier, France
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41
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Etheridge N, Lewohl JM, Mayfield RD, Harris RA, Dodd PR. Synaptic proteome changes in the superior frontal gyrus and occipital cortex of the alcoholic brain. Proteomics Clin Appl 2009; 3:730-742. [PMID: 19924264 DOI: 10.1002/prca.200800202] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
Cognitive deficits and behavioral changes that result from chronic alcohol abuse are a consequence of neuropathological changes which alter signal transmission through the neural network. To focus on the changes that occur at the point of connection between the neural network cells, synaptosomal preparations from post-mortem human brain of six chronic alcoholics and six non-alcoholic controls were compared using 2D-DIGE. Functionally affected and spared regions (superior frontal gyrus, SFG, and occipital cortex, OC, respectively) were analyzed from both groups to further investigate the specific pathological response that alcoholism has on the brain. Forty-nine proteins were differentially regulated between the SFG of alcoholics and the SFG of controls and 94 proteins were regulated in the OC with an overlap of 23 proteins. Additionally, the SFG was compared to the OC within each group (alcoholics or controls) to identify region specific differences. A selection were identified by MALDI-TOF mass spectrometry revealing proteins involved in vesicle transport, metabolism, folding and trafficking, and signal transduction, all of which have the potential to influence synaptic activity. A number of proteins identified in this study have been previously related to alcoholism; however, the focus on synaptic proteins has also uncovered novel alcoholism-affected proteins. Further exploration of these proteins will illuminate the mechanisms altering synaptic plasticity, and thus neuronal signaling and response, in the alcoholic brain.
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Affiliation(s)
- Naomi Etheridge
- School of Molecular and Microbial Sciences, University of Queensland, St Lucia, Queensland, 4072, Australia
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42
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Heat shock proteins as gatekeepers of proteolytic pathways-Implications for age-related macular degeneration (AMD). Ageing Res Rev 2009; 8:128-39. [PMID: 19274853 DOI: 10.1016/j.arr.2009.01.001] [Citation(s) in RCA: 90] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Age-related macular degeneration (AMD) is the major diagnosis for severe and irreversible central loss of vision in elderly people in the developed countries. The loss of vision involves primarily a progressive degeneration and cell death of postmitotic retinal pigment epithelial cells (RPE), which secondarily evokes adverse effects on photoreceptor cells. The RPE cells are exposed to chronic oxidative stress from three sources: their high levels of oxygen consumption, their exposure to the high levels of lipid peroxidation derived from the photoreceptor outer segments and their exposure to constant light stimuli. Cells increase the expression of heat shock proteins (HSPs) in order to normalize their growth conditions in response to various environmental stress factors, e.g. oxidative stress. The HSPs function as molecular chaperones by preventing the accumulation of cellular cytotoxic protein aggregates and assisting in correct folding of both nascent and misfolded proteins. Increased HSPs levels are observed in the retina of AMD patients, evidence of stressed tissue. A hallmark of RPE cell aging is lysosomal lipofuscin accumulation reflecting a weakened capacity to degrade proteins in lysosomes. The presence of lipofuscin increases the misfolding of intracellular proteins, which evokes additional stress in the RPE cells. If the capacity of HSPs to repair protein damages is overwhelmed, then the proteins are mainly cleared in proteasomes or in lysosomes. In this review, we discuss the role of heat shock proteins, proteasomes, and lysosomes and autophagic processes in RPE cell proteolysis and how these might be involved in development of AMD. In addition to classical lysosomal proteolysis, we focus on the increasing evidence that, HSPs, proteasomes and autophagy regulate protein turnover in the RPE cells and thus have important roles in AMD disease.
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Gómez AV, Galleguillos D, Maass JC, Battaglioli E, Kukuljan M, Andrés ME. CoREST represses the heat shock response mediated by HSF1. Mol Cell 2008; 31:222-31. [PMID: 18657505 DOI: 10.1016/j.molcel.2008.06.015] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2007] [Revised: 03/23/2008] [Accepted: 06/01/2008] [Indexed: 10/21/2022]
Abstract
The stress response in cells involves a rapid and transient transcriptional activation of stress genes. It has been shown that Hsp70 limits its own transcriptional activation functioning as a corepressor of heat shock factor 1 (HSF1) during the attenuation of the stress response. Here we show that the transcriptional corepressor CoREST interacts with Hsp70. Through this interaction, CoREST represses both HSF1-dependent and heat shock-dependent transcriptional activation of the hsp70 promoter. In cells expressing short hairpin RNAs directed against CoREST, Hsp70 cannot repress HSF1-dependent transcription. A reduction of CoREST levels also provoked a significant increase of Hsp70 protein levels and an increase of HSF1-dependent transactivation of hsp70 promoter. Via chromatin immunoprecipitation assays we show that CoREST is bound to the hsp70 gene promoter under basal conditions and that its binding increases during heat shock response. In conclusion, we demonstrated that CoREST is a key regulator of the heat shock stress response.
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Affiliation(s)
- Andrea V Gómez
- Millenium Nucleus in Stress and Addiction, Departamento de Biología Celular y Molecular, Facultad de Ciencias Biológicas, Pontificia Universidad Católica de Chile, Santiago 8330025, Chile
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Abstract
Heat shock proteins (HSPs) are a defined set of chaperones for maintaining proper functions of proteins. The HSP70 family, one of the most inducible families in response to stress, protects cells from stress-induced cell death. It has been documented that HSP70s are highly expressed in various types of cancer cells and make the cells resistant to adverse microenvironments, such as hypoxia and glucose starvation, which are common features in malignant progression. Over-expression of HSP70s is thus associated with tumor transformation and eventually results in a decrease of chemotherapy efficacy. Notably, the distribution of HSP70s is deregulated in cancer cells. It has been reported that HSP70s localize distinct organelles or are exported to humoral circulation during cancer development. Either surface or exported HSP70s play danger signals and trigger immune response to destroy the tumor cells. In this review, we lay out recent advances in the HSP70s-mediated cancer diagnosis and therapy. This review would be enlightening for clinical cancer medicine.
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Affiliation(s)
- Chih-Wen Shu
- Institute of Biotechnology and Department of Life Science, National Tsing Hua University, Hsinchu, Taiwan
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IWAMOTO S, SATO S, HOSOMICHI K, TAWEETUNGTRAGOON A, SHIINA T, MATSUBAYASHI H, HARA H, YOSHIDA Y, HANZAWA K. Identification of heat shock protein 70 genes HSPA2, HSPA5 and HSPA8 from the Japanese quail, Coturnix japonica. Anim Sci J 2008. [DOI: 10.1111/j.1740-0929.2008.00514.x] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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46
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Abstract
Chaperone-mediated autophagy (CMA) is the only type of autophagy in mammalian cells able to selectively degrade cytosolic proteins in lysosomes. CMA is maximally activated in response to stressors such as prolonged starvation, exposure to toxic compounds, or oxidative stress. We have found that CMA activity decreases in aging and in some age-related disorders such as Parkinson's disease. Impaired CMA under these conditions may be responsible for the accumulation of damaged proteins inside cells and for their higher vulnerability to stressors. In contrast to other forms of autophagy, where substrates are engulfed or sequestered along with other cytosolic components, CMA substrates are translocated one-by-one across the lysosomal membrane. Changes in the levels/activity of the lysosomal components required for substrate translocation can be used to stimulate CMA activity. However, the most unequivocal method to measure CMA is by directly tracking the translocation of substrate proteins into isolated lysosomes.
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Affiliation(s)
- S Kaushik
- Department of Anatomy and Structural Biology, Marion Bessin Liver Research Center, Albert Einstein College of Medicine, New York, NY, USA
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Pierantoni GM, Esposito F, Giraud S, Bienvenut WV, Diaz JJ, Fusco A. Identification of new high mobility group A1 associated proteins. Proteomics 2007; 7:3735-42. [PMID: 17880001 DOI: 10.1002/pmic.200700148] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
High mobility group A (HMGA) proteins (HMGA1a, HMGA1b, HMGA1c and HMGA2) are nonhistone chromosomal proteins that do not have transcriptional activity per se, but they orchestrate the assembly of multiprotein complexes involved in gene transcription, replication and chromatin structure through a complex network of protein-DNA and protein-protein interactions. To better understand their mechanisms of action, we have used a combination of coimmunoprecipitation, 1-D gel SDS-PAGE and MS to identify new potential molecular interactors. We have found 11 proteins that associate with HMGA1. These proteins belong to three different classes: mRNA processing proteins, RNA helicases and protein chaperones. Some interactions were confirmed by coimmunoprecipitation and pull-down experiments in human embryonal kidney 293 cells. These experimental data suggest that HMGA1 proteins can associate with proteins that are strictly involved in chromatin structure and in several important mRNA processing steps, supporting the idea that HMGA1 proteins can also participate in these events.
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Affiliation(s)
- Giovanna Maria Pierantoni
- Dipartimento di Biologia e Patologia Cellulare e Molecolare, Facoltà di Medicina e Chirurgia, Università degli Studi di Napoli Federico II, Naples, Italy
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48
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Chuang KH, Ho SH, Song YL. Cloning and expression analysis of heat shock cognate 70 gene promoter in tiger shrimp (Penaeus monodon). Gene 2007; 405:10-8. [PMID: 17931801 DOI: 10.1016/j.gene.2007.08.016] [Citation(s) in RCA: 43] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2007] [Revised: 07/04/2007] [Accepted: 08/10/2007] [Indexed: 10/22/2022]
Abstract
Heat shock cognate 70 (HSC70) functions as a molecular chaperon and plays an important role in protein folding. HSC70 cDNA of tiger shrimp (Penaeus monodon) was cloned and characterized in our previous study. After shrimps were treated with the 1-hr heat shock, the HSC70 mRNA level in hemocytes increased (approximately 8 fold) using real-time quantitative PCR. An hsc70 clone was obtained from genomic library screening. The gene contains 2 exons separated by a 1557-bp intron. The 5'-flanking region sequence (approximately 1 kb) ahead of the hsc70 gene contains a putative core promoter region and transcription elements including perfect heat shock element (HSE), imperfect HSE, CAAT elements, SP1, NF-kappaB and GC box. In insect Sf21 cells, the region could drive expression of the enhanced green fluorescent protein (EGFP) and luciferase gene to verify its promoter function. In the luciferase assay system, the effects of serial deletions on the hsc70 promoter were elucidated. Autographa californica multiple nuclear polyhedrosis virus infection (MOI=0.1) on Sf21 cells significantly increased the hsc70 promoter activity. In addition, the effects of amino acid analogs and arsenic acid incubation with the cells on the hsc70 promoter activity were examined.
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Affiliation(s)
- Kuo-Hung Chuang
- Institute of Zoology, National Taiwan University, Taipei, Taiwan, ROC
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Maeda H, Sahara H, Mori Y, Torigo T, Kamiguchi K, Tamura Y, Tamura Y, Hirata K, Sato N. Biological Heterogeneity of the Peptide-binding Motif of the 70-kDa Heat Shock Protein by Surface Plasmon Resonance Analysis. J Biol Chem 2007; 282:26956-26962. [PMID: 17626008 DOI: 10.1074/jbc.m703436200] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
70-kDa heat shock protein family is a molecular chaperone that binds to a variety of client proteins and peptides in the cytoplasm. Several studies have revealed binding motifs between 70-kDa heat shock protein family and cytoplasmic proteins by conventional techniques such as phage display library screening. However, little is known about the binding motif based on kinetic parameters determined by surface plasmon resonance analysis. We investigated the major inducible cytosolic 70-kDa heat shock protein (Hsp70)-binding motif with the human leukocyte antigen B*2702-derived peptide Bw4 (RENLRIALRY) by using a Biacore system based on surface plasmon resonance analysis. The K(D) value of Hsp70-Bw4 interaction was 1.8 x 10(-6) m. Analyses with truncated Bw4 variant peptides showed the binding motif of Hsp70 to be seven residues, LRIALRY. To further study the characteristics of this motif, 126 peptides derived from Bw4, each with single amino acid substitution, were synthesized and analyzed for Hsp70 binding affinity. Interestingly, the Hsp70 binding affinity was abrogated when the residues were substituted for by acidic (Asp and Glu) ones at any position. In contrast, if the substitute residue was aromatic (Trp, Tyr, and Phe) or an Arg residue at any position, Hsp70 binding affinity was maintained. Thus, this study presents a new binding motif between Hsp70 and peptides derived from the natural protein human leukocyte antigen B*2702 and may also elucidate some characteristics of the Hsp70 binding characteristic, enhancing our understanding of Hsp70-binding determinants that may influence diverse cellular and physiological processes.
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Affiliation(s)
- Hideki Maeda
- Departments of Surgery, South 1 West 17, Chuo-ku, Sapporo 060-8556, Japan; Departments of Pathology, South 1 West 17, Chuo-ku, Sapporo 060-8556, Japan
| | - Hiroeki Sahara
- Marine Biomedical Institute, Sapporo Medical University School of Medicine, South 1 West 17, Chuo-ku, Sapporo 060-8556, Japan.
| | - Yoko Mori
- Marine Biomedical Institute, Sapporo Medical University School of Medicine, South 1 West 17, Chuo-ku, Sapporo 060-8556, Japan
| | - Toshihiko Torigo
- Departments of Pathology, South 1 West 17, Chuo-ku, Sapporo 060-8556, Japan
| | - Kenjiro Kamiguchi
- Departments of Pathology, South 1 West 17, Chuo-ku, Sapporo 060-8556, Japan
| | - Yutaka Tamura
- Department of Bioinformatics Graduate School of Medicine, Chiba University, 1-8-1, Inohana, Chiba 260-8670, Japan
| | - Yasuaki Tamura
- Departments of Pathology, South 1 West 17, Chuo-ku, Sapporo 060-8556, Japan
| | - Kouichi Hirata
- Departments of Surgery, South 1 West 17, Chuo-ku, Sapporo 060-8556, Japan
| | - Noriyuki Sato
- Departments of Pathology, South 1 West 17, Chuo-ku, Sapporo 060-8556, Japan
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Daugaard M, Rohde M, Jäättelä M. The heat shock protein 70 family: Highly homologous proteins with overlapping and distinct functions. FEBS Lett 2007; 581:3702-10. [PMID: 17544402 DOI: 10.1016/j.febslet.2007.05.039] [Citation(s) in RCA: 790] [Impact Index Per Article: 46.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2007] [Revised: 05/14/2007] [Accepted: 05/14/2007] [Indexed: 12/12/2022]
Abstract
The human heat shock protein 70 (Hsp70) family contains at least eight homologous chaperone proteins. Endoplasmatic reticulum and mitochondria have their specific Hsp70 proteins, whereas the remaining six family members reside mainly in the cytosol and nucleus. The requirement for multiple highly homologous although different Hsp70 proteins is still far from clear, but their individual and tissue-specific expression suggests that they are assigned distinct biological tasks. This concept is supported by the fact that mice knockout for different Hsp70 genes display remarkably discrete phenotypes. Moreover, emerging data suggest that individual Hsp70 proteins can bring about non-overlapping and chaperone-independent functions essential for growth and survival of cancer cells. This review summarizes our present knowledge of the individual members of human Hsp70 family and elaborate on the functional differences between the cytosolic/nuclear representatives.
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Affiliation(s)
- Mads Daugaard
- Apoptosis Department and Centre for Genotoxic Stress Response, Institute of Cancer Biology, Danish Cancer Society, Strandboulevarden 49, DK-2100 Copenhagen, Denmark
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