101
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Fang X, Bogomolovas J, Trexler C, Chen J. The BAG3-dependent and -independent roles of cardiac small heat shock proteins. JCI Insight 2019; 4:126464. [PMID: 30830872 DOI: 10.1172/jci.insight.126464] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
Abstract
Small heat shock proteins (sHSPs) comprise an important protein family that is ubiquitously expressed, is highly conserved among species, and has emerged as a critical regulator of protein folding. While these proteins are functionally important for a variety of tissues, an emerging field of cardiovascular research reveals sHSPs are also extremely important for maintaining normal cardiac function and regulating the cardiac stress response. Notably, numerous mutations in genes encoding sHSPs have been associated with multiple cardiac diseases. sHSPs (HSPB5, HSPB6, and HSPB8) have been described as mediating chaperone functions within the heart by interacting with the cochaperone protein BCL-2-associated anthanogene 3 (BAG3); however, recent reports indicate that sHSPs (HSPB7) can perform other BAG3-independent functions. Here, we summarize the cardiac functions of sHSPs and present the notion that cardiac sHSPs function via BAG3-dependent or -independent pathways.
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102
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Teixeira F, Tse E, Castro H, Makepeace KAT, Meinen BA, Borchers CH, Poole LB, Bardwell JC, Tomás AM, Southworth DR, Jakob U. Chaperone activation and client binding of a 2-cysteine peroxiredoxin. Nat Commun 2019; 10:659. [PMID: 30737390 PMCID: PMC6368585 DOI: 10.1038/s41467-019-08565-8] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2018] [Accepted: 01/14/2019] [Indexed: 02/02/2023] Open
Abstract
Many 2-Cys-peroxiredoxins (2-Cys-Prxs) are dual-function proteins, either acting as peroxidases under non-stress conditions or as chaperones during stress. The mechanism by which 2-Cys-Prxs switch functions remains to be defined. Our work focuses on Leishmania infantum mitochondrial 2-Cys-Prx, whose reduced, decameric subpopulation adopts chaperone function during heat shock, an activity that facilitates the transition from insects to warm-blooded host environments. Here, we have solved the cryo-EM structure of mTXNPx in complex with a thermally unfolded client protein, and revealed that the flexible N-termini of mTXNPx form a well-resolved central belt that contacts and encapsulates the unstructured client protein in the center of the decamer ring. In vivo and in vitro cross-linking studies provide further support for these interactions, and demonstrate that mTXNPx decamers undergo temperature-dependent structural rearrangements specifically at the dimer-dimer interfaces. These structural changes appear crucial for exposing chaperone-client binding sites that are buried in the peroxidase-active protein.
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Affiliation(s)
- Filipa Teixeira
- Department of Molecular, Cellular and Developmental, University of Michigan, Ann Arbor, 48109-1085, MI, USA.,i3S - Instituto de Investigação e Inovação em Saúde, Universidade do Porto, Porto, 4200-135, Portugal.,IBMC - Instituto de Biologia Molecular e Celular, Universidade do Porto, Porto, 4050-313, Portugal.,ICBAS - Instituto de Ciências Biomédicas Abel Salazar, Universidade do Porto, Porto, 4050-313, Portugal
| | - Eric Tse
- Department of Biochemistry and Biophysics, Institute for Neurodegenerative Diseases, University of California, San Francisco, 94158, CA, USA
| | - Helena Castro
- i3S - Instituto de Investigação e Inovação em Saúde, Universidade do Porto, Porto, 4200-135, Portugal.,IBMC - Instituto de Biologia Molecular e Celular, Universidade do Porto, Porto, 4050-313, Portugal
| | - Karl A T Makepeace
- Department of Biochemistry and Microbiology, University of Victoria, Victoria, V8P 5C2, BC, Canada.,Genome British Columbia Proteomics Centre, University of Victoria, Victoria, V8Z 7X8, BC, Canada
| | - Ben A Meinen
- Department of Molecular, Cellular and Developmental, University of Michigan, Ann Arbor, 48109-1085, MI, USA.,Howard Hughes Medical Institute, Ann Arbor, 48109-1085, MI, USA
| | - Christoph H Borchers
- Department of Biochemistry and Microbiology, University of Victoria, Victoria, V8P 5C2, BC, Canada.,Genome British Columbia Proteomics Centre, University of Victoria, Victoria, V8Z 7X8, BC, Canada.,Gerald Bronfman Department of Oncology, Jewish General Hospital, Montreal, H4A 3T2, QC, Canada.,Proteomics Centre, Segal Cancer Centre, Lady Davis Institute, Jewish General Hospital, Montreal, H3T 1E2, QC, Canada
| | - Leslie B Poole
- Department of Biochemistry, Wake Forest School of Medicine, Winston-Salem, 27157, NC, USA
| | - James C Bardwell
- Department of Molecular, Cellular and Developmental, University of Michigan, Ann Arbor, 48109-1085, MI, USA.,Howard Hughes Medical Institute, Ann Arbor, 48109-1085, MI, USA
| | - Ana M Tomás
- i3S - Instituto de Investigação e Inovação em Saúde, Universidade do Porto, Porto, 4200-135, Portugal.,IBMC - Instituto de Biologia Molecular e Celular, Universidade do Porto, Porto, 4050-313, Portugal.,ICBAS - Instituto de Ciências Biomédicas Abel Salazar, Universidade do Porto, Porto, 4050-313, Portugal
| | - Daniel R Southworth
- Department of Biochemistry and Biophysics, Institute for Neurodegenerative Diseases, University of California, San Francisco, 94158, CA, USA.
| | - Ursula Jakob
- Department of Molecular, Cellular and Developmental, University of Michigan, Ann Arbor, 48109-1085, MI, USA.
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103
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Gliniewicz EF, Chambers KM, De Leon ER, Sibai D, Campbell HC, McMenimen KA. Chaperone-like activity of the N-terminal region of a human small heat shock protein and chaperone-functionalized nanoparticles. Proteins 2019; 87:401-415. [PMID: 30684363 DOI: 10.1002/prot.25662] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2018] [Revised: 01/03/2019] [Accepted: 01/22/2019] [Indexed: 11/10/2022]
Abstract
Small heat shock proteins (sHsps) are molecular chaperones employed to interact with a diverse range of substrates as the first line of defense against cellular protein aggregation. The N-terminal region (NTR) is implicated in defining features of sHsps; notably in their ability to form dynamic and polydisperse oligomers, and chaperone activity. The physiological relevance of oligomerization and chemical-scale mode(s) of chaperone function remain undefined. We present novel chemical tools to investigate chaperone activity and substrate specificity of human HspB1 (B1NTR), through isolation of B1NTR and development of peptide-conjugated gold nanoparticles (AuNPs). We demonstrate that B1NTR exhibits chaperone capacity for some substrates, determined by anti-aggregation assays and size-exclusion chromatography. The importance of protein dynamics and multivalency on chaperone capacity was investigated using B1NTR-conjugated AuNPs, which exhibit concentration-dependent chaperone activity for some substrates. Our results implicate sHsp NTRs in chaperone activity, and demonstrate the therapeutic potential of sHsp-AuNPs in rescuing aberrant protein aggregation.
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Affiliation(s)
- Emily F Gliniewicz
- Department of Chemistry, Mount Holyoke College, South Hadley, Massachusetts
| | - Kelly M Chambers
- Department of Chemistry, Mount Holyoke College, South Hadley, Massachusetts
| | | | - Diana Sibai
- Department of Chemistry, Mount Holyoke College, South Hadley, Massachusetts
| | - Helen C Campbell
- Department of Chemistry, Mount Holyoke College, South Hadley, Massachusetts
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104
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Uji T, Gondaira Y, Fukuda S, Mizuta H, Saga N. Characterization and expression profiles of small heat shock proteins in the marine red alga Pyropia yezoensis. Cell Stress Chaperones 2019; 24:223-233. [PMID: 30632066 PMCID: PMC6363611 DOI: 10.1007/s12192-018-00959-9] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2018] [Revised: 09/20/2018] [Accepted: 12/03/2018] [Indexed: 12/14/2022] Open
Abstract
Small heat shock proteins (sHSPs) are found in all three domains of life (Bacteria, Archaea, and Eukarya) and play a critical role in protecting organisms from a range of environmental stresses. However, little is known about their physiological functions in red algae. Therefore, we characterized the sHSPs (PysHSPs) in the red macroalga Pyropia yezoensis, which inhabits the upper intertidal zone where it experiences fluctuating stressful environmental conditions on a daily and seasonal basis, and examined their expression profiles at different developmental stages and under varying environmental conditions. We identified five PysHSPs (PysHSP18.8, 19.1, 19.2, 19.5, and 25.8). Real-time quantitative reverse transcription polymerase chain reaction (qRT-PCR) analysis showed that expression of the genes PysHSP18.8, PysHSP19.5, and PysHSP25.8 was repressed at all the developmental stages under normal conditions, whereas PysHSP19.1 and PysHSP19.2 were overexpressed in mature gametophytes and sporophytes. Exposure of the gametophytes to high temperature, oxidative stress, or copper significantly increased the mRNA transcript levels of all the five genes, while exogenous application of the ethylene precursor 1-aminocylopropane-1-carboxylic acid (ACC) significantly increased the expression levels of PysHSP19.2, PysHSP19.5, and PysHSP25.8. These findings will help to further our understanding of the role of PysHSP genes and provide clues about how Pyropia species can adapt to the stressful conditions encountered in the upper intertidal zone during their life cycle.
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Affiliation(s)
- Toshiki Uji
- Division of Marine Life Science, Faculty of Fisheries Sciences, Hokkaido University, Hakodate, 041-8611, Japan.
| | - Yohei Gondaira
- Division of Marine Life Science, Faculty of Fisheries Sciences, Hokkaido University, Hakodate, 041-8611, Japan
| | - Satoru Fukuda
- Section of Food Sciences, Institute for Regional Innovation, Hirosaki University, Aomori, Aomori, 038-0012, Japan
| | - Hiroyuki Mizuta
- Division of Marine Life Science, Faculty of Fisheries Sciences, Hokkaido University, Hakodate, 041-8611, Japan
| | - Naotsune Saga
- Section of Food Sciences, Institute for Regional Innovation, Hirosaki University, Aomori, Aomori, 038-0012, Japan
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105
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Mistarz UH, Chandler SA, Brown JM, Benesch JLP, Rand KD. Probing the Dissociation of Protein Complexes by Means of Gas-Phase H/D Exchange Mass Spectrometry. JOURNAL OF THE AMERICAN SOCIETY FOR MASS SPECTROMETRY 2019; 30:45-57. [PMID: 30460642 DOI: 10.1007/s13361-018-2064-1] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/26/2018] [Revised: 08/29/2018] [Accepted: 08/30/2018] [Indexed: 05/16/2023]
Abstract
Gas-phase hydrogen/deuterium exchange measured by mass spectrometry (gas-phase HDX-MS) is a fast method to probe the conformation of protein ions. The use of gas-phase HDX-MS to investigate the structure and interactions of protein complexes is however mostly unharnessed. Ionizing proteins under conditions that maximize preservation of their native structure (native MS) enables the study of solution-like conformation for milliseconds after electrospray ionization (ESI), which enables the use of ND3-gas inside the mass spectrometer to rapidly deuterate heteroatom-bound non-amide hydrogens. Here, we explored the utility of gas-phase HDX-MS to examine protein-protein complexes and inform on their binding surface and the structural consequences of gas-phase dissociation. Protein complexes ranging from 24 kDa dimers to 395 kDa 24mers were analyzed by gas-phase HDX-MS with subsequent collision-induced dissociation (CID). The number of exchangeable sites involved in complex formation could, therefore, be estimated. For instance, dimers of cytochrome c or α-lactalbumin incorporated less deuterium/subunit than their unbound monomer counterparts, providing a measure of the number of heteroatom-bound side-chain hydrogens involved in complex formation. We furthermore studied if asymmetric charge-partitioning upon dissociation of protein complexes caused intermolecular H/D migration. In larger multimeric protein complexes, the dissociated monomer showed a significant increase in deuterium. This indicates that intermolecular H/D migration occurs as part of the asymmetric partitioning of charge during CID. We discuss several models that may explain this increase deuterium content and find that a model where only deuterium involved in migrating charge can account for most of the deuterium enrichment observed on the ejected monomer. In summary, the deuterium content of the ejected subunit can be used to estimate that of the intact complex with deviations observed for large complexes accounted for by charge migration. Graphical abstract ᅟ.
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Affiliation(s)
- Ulrik H Mistarz
- Protein Analysis Group, Department of Pharmacy, University of Copenhagen, Universitetsparken 2, 2100, Copenhagen, Denmark
| | - Shane A Chandler
- Department of Chemistry, Physical & Theoretical Chemistry Laboratory, University of Oxford, South Parks Road, Oxford, OX1 3QZ, UK
| | - Jeffery M Brown
- Waters Corporation, Stamford Avenue, Altrincham Road, Wilmslow, SK9 4AX, UK
| | - Justin L P Benesch
- Department of Chemistry, Physical & Theoretical Chemistry Laboratory, University of Oxford, South Parks Road, Oxford, OX1 3QZ, UK.
| | - Kasper D Rand
- Protein Analysis Group, Department of Pharmacy, University of Copenhagen, Universitetsparken 2, 2100, Copenhagen, Denmark.
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106
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Zhang J, Li Q, Sun Y, Tian J, Hu Z, Zhu B, Liu C. Molecular cloning and functional analysis of small heat shock protein 19.1 gene from the Chinese oak silkworm, Antheraea pernyi. ARCHIVES OF INSECT BIOCHEMISTRY AND PHYSIOLOGY 2018; 99:e21516. [PMID: 30387888 DOI: 10.1002/arch.21516] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Small heat shock proteins (sHSPs) are a class of highly conserved proteins that are ubiquitously found in all types of organisms, from prokaryotes to eukaryotes. In the current study, we identified and characterized the full-length cDNA encoding sHSP 19.1 from the oak silkworm, Antheraea pernyi. Ap-sHSP is 510 bp in length, and encodes a protein of 169 amino acid residues. The protein contains conserved domains found in insect sHSPs, and it belongs to the α-crystallin-HSPs_p23-like superfamily. Recombinant Ap-sHSP was expressed in Escherichia coli cells, and a rabbit anti-Ap-sHSP 19.1 antibody was generated to confirm the biological functions of Ap-sHSP 19.1 in A. pernyi. Real-time polymerase chain reaction and western blot analysis revealed that Ap-sHSP 19.1 expression was highest in the fat body, followed by the midgut, and the lowest expression was found in the Malpighian tubule. Ap-sHSP 19.1 transcript expression was significantly induced following challenge with microbial pathogens. In addition, the expression of Ap-sHSP 19.1 was strongly induced after heat shock. These results suggest that Ap-sHSP 19.1 plays a crucial role in immune responses and thermal tolerance in A. pernyi.
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Affiliation(s)
- Jiawei Zhang
- College of Life Sciences, Anhui Agricultural University, Hefei, China
| | - Qingqing Li
- College of Life Sciences, Anhui Agricultural University, Hefei, China
| | - Yu Sun
- College of Life Sciences, Anhui Agricultural University, Hefei, China
| | - Jiwu Tian
- College of Life Sciences, Anhui Agricultural University, Hefei, China
| | - Zaijin Hu
- College of Life Sciences, Anhui Agricultural University, Hefei, China
| | - Baojian Zhu
- College of Life Sciences, Anhui Agricultural University, Hefei, China
| | - Chaoliang Liu
- College of Life Sciences, Anhui Agricultural University, Hefei, China
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107
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Dahiya V, Buchner J. Functional principles and regulation of molecular chaperones. ADVANCES IN PROTEIN CHEMISTRY AND STRUCTURAL BIOLOGY 2018; 114:1-60. [PMID: 30635079 DOI: 10.1016/bs.apcsb.2018.10.001] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
To be able to perform their biological function, a protein needs to be correctly folded into its three dimensional structure. The protein folding process is spontaneous and does not require the input of energy. However, in the crowded cellular environment where there is high risk of inter-molecular interactions that may lead to protein molecules sticking to each other, hence forming aggregates, protein folding is assisted. Cells have evolved robust machinery called molecular chaperones to deal with the protein folding problem and to maintain proteins in their functional state. Molecular chaperones promote efficient folding of newly synthesized proteins, prevent their aggregation and ensure protein homeostasis in cells. There are different classes of molecular chaperones functioning in a complex interplay. In this review, we discuss the principal characteristics of different classes of molecular chaperones, their structure-function relationships, their mode of regulation and their involvement in human disorders.
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Affiliation(s)
- Vinay Dahiya
- Center for Integrated Protein Science Munich CIPSM at the Department Chemie, Technische Universität München, Garching, Germany
| | - Johannes Buchner
- Center for Integrated Protein Science Munich CIPSM at the Department Chemie, Technische Universität München, Garching, Germany.
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108
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Costa-Martins AG, Lima L, Alves JMP, Serrano MG, Buck GA, Camargo EP, Teixeira MMG. Genome-wide identification of evolutionarily conserved Small Heat-Shock and eight other proteins bearing α-crystallin domain-like in kinetoplastid protists. PLoS One 2018; 13:e0206012. [PMID: 30346990 PMCID: PMC6197667 DOI: 10.1371/journal.pone.0206012] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2018] [Accepted: 10/04/2018] [Indexed: 11/18/2022] Open
Abstract
Small Heat-Shock Proteins (sHSPs) and other proteins bearing alpha-crystallin domains (ACD) participate in defense against heat and oxidative stress and play important roles in cell cycle, cytoskeleton dynamics, and immunological and pathological mechanisms in eukaryotes. However, little is known about these proteins in early-diverging lineages of protists such as the kinetoplastids. Here, ACD-like proteins (ACDp) were investigated in genomes of 61 species of 12 kinetoplastid genera, including Trypanosoma spp. (23 species of mammals, reptiles and frogs), Leishmania spp. (mammals and lizards), trypanosomatids of insects, Phytomonas spp. of plants, and bodonids. Comparison of ACDps based on domain architecture, predicted tertiary structure, phylogeny and genome organization reveals a kinetoplastid evolutionarily conserved repertoire, which diversified prior to trypanosomatid adaptation to parasitic life. We identified 9 ACDp orthologs classified in 8 families of TryACD: four previously recognized (HSP20, Tryp23A, Tryp23B and ATOM69), and four characterized for the first time in kinetoplastids (TryACDP, TrySGT1, TryDYX1C1 and TryNudC). A single copy of each ortholog was identified in each genome alongside TryNudC1/TrypNudC2 homologs and, overall, ACDPs were under strong selection pressures at main phylogenetic lineages. Transcripts of all ACDPs were identified across the life stages of T. cruzi, T. brucei and Leishmania spp., but proteomic profiles suggested that most ACDPs may be species- and stage-regulated. Our findings establish the basis for functional studies, and provided evolutionary and structural support for an underestimated repertoire of ACDps in the kinetoplastids.
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Affiliation(s)
- André G Costa-Martins
- Department of Parasitology, Institute of Biomedical Sciences, University of São Paulo, São Paulo, SP, Brazil
| | - Luciana Lima
- Department of Parasitology, Institute of Biomedical Sciences, University of São Paulo, São Paulo, SP, Brazil.,INCT-EpiAmO-Instituto Nacional de Epidemiologia na Amazônia Ocidental, Porto Velho, RO, Brazil
| | - João Marcelo P Alves
- Department of Parasitology, Institute of Biomedical Sciences, University of São Paulo, São Paulo, SP, Brazil
| | - Myrna G Serrano
- Department of Microbiology and Immunology, Virginia Commonwealth University, Richmond, VA, United States of America
| | - Gregory A Buck
- Department of Microbiology and Immunology, Virginia Commonwealth University, Richmond, VA, United States of America
| | - Erney P Camargo
- Department of Parasitology, Institute of Biomedical Sciences, University of São Paulo, São Paulo, SP, Brazil.,INCT-EpiAmO-Instituto Nacional de Epidemiologia na Amazônia Ocidental, Porto Velho, RO, Brazil
| | - Marta M G Teixeira
- Department of Parasitology, Institute of Biomedical Sciences, University of São Paulo, São Paulo, SP, Brazil.,INCT-EpiAmO-Instituto Nacional de Epidemiologia na Amazônia Ocidental, Porto Velho, RO, Brazil
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109
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Improving stress tolerance and cell integrity of Rhodococcus ruber by overexpressing small-shock-protein Hsp16 of Rhodococcus. ACTA ACUST UNITED AC 2018; 45:929-938. [DOI: 10.1007/s10295-018-2066-9] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2018] [Accepted: 07/27/2018] [Indexed: 01/10/2023]
Abstract
Abstract
Rhodococcus species have been successfully used as cell catalysts for valuable chemicals production due to their well-characterized resistance to harmful factors. An understanding of how they respond to stress is of great interest, which will enable the identification of engineering strategies for further improving their resistance and maintaining cell integrity and viability. Here, we assessed the transcriptome response of R. ruber TH3 to heat shock. Approximately, 376 genes were up-regulated in heat-shocked TH3. Among all the up-regulated functional genes, the small heat-shock-protein (Hsp16) with maximal enhanced transcript (463-fold) was identified, and its function was investigated. Results showed that overexpressed Hsp16 has no significant promotive effect on stress tolerance of in-cell enzyme. Interestingly, compared to the control TH3, a little fewer pores and folds on the surface of TH3(Hsp16) and more intact TH3(Hsp-GFP) cells under AM treatment were observed by SEM and LCSM, respectively. Moreover, survival test showed that more (about 501–700) TH3(Hsp16) colonies were observed while only 1–100 TH3 colonies after 50% AM treatment, and this trend is also found in high-temperature cultivation experiments. These results indicate that Hsp16 does great contributions to preventing cell leakage, maintaining cell integrity and viability of R. ruber under stress conditions.
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110
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Dependence of HSP27 cellular level on protein kinase CK2 discloses novel therapeutic strategies. Biochim Biophys Acta Gen Subj 2018; 1862:2902-2910. [PMID: 30279146 DOI: 10.1016/j.bbagen.2018.09.014] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2018] [Revised: 08/21/2018] [Accepted: 09/18/2018] [Indexed: 12/24/2022]
Abstract
BACKGROUND HSP27 plays a role in various diseases, including neurodegenerative diseases, ischemia, and atherosclerosis. It is particularly important in the regulation of the development, progression and metastasis of cancer as well as cell apoptosis and drug resistance. However, the absence of an ATP binding domain, that is, instead, present in other HSPs such as HSP90 and HSP70, hampers the development of small molecules as inhibitors of HSP27. METHODS Knockout cell lines generated by Crispr/Cas9 gene editing tool, specific kinase inhibitors and siRNA transfections were exploited to demonstrate that the expression of HSP27 is dependent on the integrity/activity of protein kinase CK2 holoenzyme. The interaction between these proteins has been confirmed by co-immunoprecipitation, confocal immunofluorescence microscopy, and by density gradient separation of protein complexes. Finally, using a proliferation assay this study demonstrates the potential efficacy of a combinatory therapy of heath shock and CK2 inhibitors in cancer treatment. RESULTS Our data demonstrate that CK2 is able to regulate HSP27 turnover by affecting the expression of its ubiquitin ligase SMURF2 (Smad ubiquitination regulatory factor 2). Moreover, for the first time we show an increased sensitivity of CK2-inhibited tumour cells to hyperthermia treatment. CONCLUSION Being HSP27 involved in several pathological conditions, including protein conformational diseases (i.e Cystic Fibrosis) and cancer, the need of drugs to modulate its activity is growing and CK2-targeting could represent a new strategy to reduce cellular HSP27 level. GENERAL SIGNIFICANCE This study identifies CK2 as a molecular target to control HSP27 cellular expression.
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111
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Castellana S, Mazza T, Capocefalo D, Genov N, Biagini T, Fusilli C, Scholkmann F, Relógio A, Hogenesch JB, Mazzoccoli G. Systematic Analysis of Mouse Genome Reveals Distinct Evolutionary and Functional Properties Among Circadian and Ultradian Genes. Front Physiol 2018; 9:1178. [PMID: 30190679 PMCID: PMC6115496 DOI: 10.3389/fphys.2018.01178] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2018] [Accepted: 08/06/2018] [Indexed: 02/02/2023] Open
Abstract
In living organisms, biological clocks regulate 24 h (circadian) molecular, physiological, and behavioral rhythms to maintain homeostasis and synchrony with predictable environmental changes, in particular with those induced by Earth’s rotation on its axis. Harmonics of these circadian rhythms having periods of 8 and 12 h (ultradian) have been documented in several species. In mouse liver, harmonics of the 24-h period of gene transcription hallmarked genes oscillating with a frequency two or three times faster than circadian periodicity. Many of these harmonic transcripts enriched pathways regulating responses to environmental stress and coinciding preferentially with subjective dawn and dusk. At this time, the evolutionary history of genes with rhythmic expression is still poorly known and the role of length-of-day changes due to Earth’s rotation speed decrease over the last four billion years is totally ignored. We hypothesized that ultradian and stress anticipatory genes would be more evolutionarily conserved than circadian genes and background non-oscillating genes. To investigate this issue, we performed broad computational analyses of genes/proteins oscillating at different frequency ranges across several species and showed that ultradian genes/proteins, especially those oscillating with a 12-h periodicity, are more likely to be of ancient origin and essential in mice. In summary, our results show that genes with ultradian transcriptional patterns are more likely to be phylogenetically conserved and associated with the primeval and inevitable dawn/dusk transitions.
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Affiliation(s)
- Stefano Castellana
- Bioinformatics Unit, IRCCS "Casa Sollievo della Sofferenza", San Giovanni Rotondo, Italy
| | - Tommaso Mazza
- Bioinformatics Unit, IRCCS "Casa Sollievo della Sofferenza", San Giovanni Rotondo, Italy
| | - Daniele Capocefalo
- Bioinformatics Unit, IRCCS "Casa Sollievo della Sofferenza", San Giovanni Rotondo, Italy
| | - Nikolai Genov
- Institute for Theoretical Biology (ITB), Charité - Universitätsmedizin Berlin and Humboldt University of Berlin, Berlin, Germany.,Molekulares Krebsforschungszentrum (MKFZ), Charité - Universitätsmedizin Berlin, Berlin, Germany
| | - Tommaso Biagini
- Bioinformatics Unit, IRCCS "Casa Sollievo della Sofferenza", San Giovanni Rotondo, Italy
| | - Caterina Fusilli
- Bioinformatics Unit, IRCCS "Casa Sollievo della Sofferenza", San Giovanni Rotondo, Italy
| | - Felix Scholkmann
- Research Office for Complex Physical and Biological Systems (ROCoS), Zürich, Switzerland.,Department of Neonatology, University Hospital Zürich, University of Zürich, Zürich, Switzerland
| | - Angela Relógio
- Institute for Theoretical Biology (ITB), Charité - Universitätsmedizin Berlin and Humboldt University of Berlin, Berlin, Germany.,Molekulares Krebsforschungszentrum (MKFZ), Charité - Universitätsmedizin Berlin, Berlin, Germany
| | - John B Hogenesch
- Divisions of Human Genetics and Immunobiology, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, United States
| | - Gianluigi Mazzoccoli
- Division of Internal Medicine and Chronobiology Unit, IRCCS "Casa Sollievo della Sofferenza", San Giovanni Rotondo, Italy
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112
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Mishra S, Chandler SA, Williams D, Claxton DP, Koteiche HA, Stewart PL, Benesch JLP, Mchaourab HS. Engineering of a Polydisperse Small Heat-Shock Protein Reveals Conserved Motifs of Oligomer Plasticity. Structure 2018; 26:1116-1126.e4. [PMID: 29983375 DOI: 10.1016/j.str.2018.05.015] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2017] [Revised: 04/10/2018] [Accepted: 05/18/2018] [Indexed: 01/21/2023]
Abstract
Small heat-shock proteins (sHSPs) are molecular chaperones that bind partially and globally unfolded states of their client proteins. Previously, we discovered that the archaeal Hsp16.5, which forms ordered and symmetric 24-subunit oligomers, can be engineered to transition to an ordered and symmetric 48-subunit oligomer by insertion of a peptide from human HspB1 (Hsp27). Here, we uncovered the existence of an array of oligomeric states (30-38 subunits) that can be populated as a consequence of altering the sequence and length of the inserted peptide. Polydisperse Hsp16.5 oligomers displayed higher affinity to a model client protein consistent with a general mechanism for recognition and binding that involves increased access of the hydrophobic N-terminal region. Our findings, which integrate structural and functional analyses from evolutionarily distant sHSPs, support a model wherein the modular architecture of these proteins encodes motifs of oligomer polydispersity, dissociation, and expansion to achieve functional diversity and regulation.
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Affiliation(s)
- Sanjay Mishra
- Chemical & Physical Biology Program, Vanderbilt University, Nashville 37232, TN, USA; Department of Molecular Physiology and Biophysics, Vanderbilt University, Nashville 37232, TN, USA
| | - Shane A Chandler
- Department of Chemistry, University of Oxford, Oxford OX1 3TA, UK
| | - Dewight Williams
- John M. Cowley Center for High Resolution Electron Microscopy, Arizona State University, Tempe 85287, AZ, USA
| | - Derek P Claxton
- Department of Molecular Physiology and Biophysics, Vanderbilt University, Nashville 37232, TN, USA
| | - Hanane A Koteiche
- Department of Molecular Physiology and Biophysics, Vanderbilt University, Nashville 37232, TN, USA
| | - Phoebe L Stewart
- Department of Pharmacology Case Western Reserve University, Cleveland, OH 44106, USA
| | | | - Hassane S Mchaourab
- Department of Molecular Physiology and Biophysics, Vanderbilt University, Nashville 37232, TN, USA.
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113
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Dimauro I, Antonioni A, Mercatelli N, Caporossi D. The role of αB-crystallin in skeletal and cardiac muscle tissues. Cell Stress Chaperones 2018; 23:491-505. [PMID: 29190034 PMCID: PMC6045558 DOI: 10.1007/s12192-017-0866-x] [Citation(s) in RCA: 58] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2017] [Revised: 11/23/2017] [Accepted: 11/25/2017] [Indexed: 12/25/2022] Open
Abstract
All organisms and cells respond to various stress conditions such as environmental, metabolic, or pathophysiological stress by generally upregulating, among others, the expression and/or activation of a group of proteins called heat shock proteins (HSPs). Among the HSPs, special attention has been devoted to the mutations affecting the function of the αB-crystallin (HSPB5), a small heat shock protein (sHsp) playing a critical role in the modulation of several cellular processes related to survival and stress recovery, such as protein degradation, cytoskeletal stabilization, and apoptosis. Because of the emerging role in general health and disease conditions, the main objective of this mini-review is to provide a brief account on the role of HSPB5 in mammalian muscle physiopathology. Here, we report the current known state of the regulation and localization of HSPB5 in skeletal and cardiac tissue, making also a critical summary of all human HSPB5 mutations known to be strictly associated to specific skeletal and cardiac diseases, such as desmin-related myopathies (DRM), dilated (DCM) and restrictive (RCM) cardiomyopathy. Finally, pointing to putative strategies for HSPB5-based therapy to prevent or counteract these forms of human muscular disorders.
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Affiliation(s)
- Ivan Dimauro
- Department of Movement, Human and Health Sciences, University of Rome “Foro Italico”, Rome, Italy
| | - Ambra Antonioni
- Department of Movement, Human and Health Sciences, University of Rome “Foro Italico”, Rome, Italy
| | - Neri Mercatelli
- Department of Movement, Human and Health Sciences, University of Rome “Foro Italico”, Rome, Italy
| | - Daniela Caporossi
- Department of Movement, Human and Health Sciences, University of Rome “Foro Italico”, Rome, Italy
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114
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P62/SQSTM1 is a novel leucine-rich repeat kinase 2 (LRRK2) substrate that enhances neuronal toxicity. Biochem J 2018. [PMID: 29519959 DOI: 10.1042/bcj20170699] [Citation(s) in RCA: 39] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
Autosomal-dominant, missense mutations in the leucine-rich repeat protein kinase 2 (LRRK2) gene are the most common genetic predisposition to develop Parkinson's disease (PD). LRRK2 kinase activity is increased in several pathogenic mutations (N1437H, R1441C/G/H, Y1699C, G2019S), implicating hyperphosphorylation of a substrate in the pathogenesis of the disease. Identification of the downstream targets of LRRK2 is a crucial endeavor in the field to understand LRRK2 pathway dysfunction in the disease. We have identified the signaling adapter protein p62/SQSTM1 as a novel endogenous interacting partner and a substrate of LRRK2. Using mass spectrometry and phospho-specific antibodies, we found that LRRK2 phosphorylates p62 on Thr138 in vitro and in cells. We found that the pathogenic LRRK2 PD-associated mutations (N1437H, R1441C/G/H, Y1699C, G2019S) increase phosphorylation of p62 similar to previously reported substrate Rab proteins. Notably, we found that the pathogenic I2020T mutation and the risk factor mutation G2385R displayed decreased phosphorylation of p62. p62 phosphorylation by LRRK2 is blocked by treatment with selective LRRK2 inhibitors in cells. We also found that the amino-terminus of LRRK2 is crucial for optimal phosphorylation of Rab7L1 and p62 in cells. LRRK2 phosphorylation of Thr138 is dependent on a p62 functional ubiquitin-binding domain at its carboxy-terminus. Co-expression of p62 with LRRK2 G2019S increases the neurotoxicity of this mutation in a manner dependent on Thr138. p62 is an additional novel substrate of LRRK2 that regulates its toxic biology, reveals novel signaling nodes and can be used as a pharmacodynamic marker for LRRK2 kinase activity.
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115
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Espinosa PJ, Alberdi P, Villar M, Cabezas-Cruz A, de la Fuente J. Heat Shock Proteins in Vector-pathogen Interactions: The Anaplasma phagocytophilum Model. ACTA ACUST UNITED AC 2018. [DOI: 10.1007/978-3-319-73377-7_15] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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116
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Cai HQ, Wang PF, Zhang HP, Cheng ZJ, Li SW, He J, Zhang Y, Hao JJ, Wang MR, Yan CX, Wan JH. Phosphorylated Hsp27 is mutually exclusive with ATRX loss and the IDH1 R132H mutation and may predict better prognosis among glioblastomas without the IDH1 mutation and ATRX loss. J Clin Pathol 2018; 71:702-707. [PMID: 29550762 PMCID: PMC6204978 DOI: 10.1136/jclinpath-2018-205000] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2018] [Revised: 02/02/2018] [Accepted: 02/05/2018] [Indexed: 12/12/2022]
Abstract
Aim To identify biomarkers for accurate classification of glioma. Patients and methods We evaluated the heat shock protein 27 (Hsp27), phosphorylated Hsp27 (p-Hsp27), ATRX and IDH1R132Hproteins using immunohistochemistry in 421 glioma tissues. The χ2 test was used to assess the relationship between molecular alterations and clinico-pathological parameters. Kaplan-Meier survival curves were constructed, and differences were detected by the log-rank test. Results We found that Hsp27 and p-Hsp27 were mainly expressed in aggressive astrocytic gliomas. However, neither Hsp27 nor p-Hsp27 expression was related to survival time for any grade of glioma. Interestingly, p-Hsp27 was mutually exclusive with ATRX loss (ATRX−) and the IDH1R132H mutation, except for one case of anaplastic astrocytoma. We classified glioblastomas (GBMs) into three subtypes: ATRX−/IDH1R132H, high p-Hsp27 expression (p-Hsp27+) and none of these three markers. ATRX-/IDH1R132Hshowed the longest median survival (19.6 months). The prognostic difference between p-Hsp27+ and none of these three markers was significant (15.0 vs 13.1 months, P=0.045). Moreover, p-Hsp27+ predicted better sensitivity for standard therapy among GBMs without the IDH1 mutation and ATRX loss (26.3 vs 15.5 months, P=0.008). Conclusion p-Hsp27 is a novel biomarker of glioma and might have important clinical value for further classification of patients with wild-type IDH1 and normal ATRX expression, for evaluating prognosis and for guidance for adjuvant therapy.
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Affiliation(s)
- Hong-Qing Cai
- Department of Neurosurgery, National Cancer Center/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China.,State Key Laboratory of Molecular Oncology, National Cancer Center/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Peng-Fei Wang
- Department of Neurosurgery, Sanbo Brain Hospital, Capital Medical University, Beijing, China
| | - Hai-Peng Zhang
- Department of Neurosurgery, The Second Affiliated Hospital of Anhui Medical University, Hefei, China
| | - Zhi-Jian Cheng
- Department of Neurosurgery, The Second Affiliated Hospital of Anhui Medical University, Hefei, China
| | - Shou-Wei Li
- Department of Neurosurgery, Sanbo Brain Hospital, Capital Medical University, Beijing, China
| | - Jie He
- Department of Neurosurgery, The Second Affiliated Hospital of Anhui Medical University, Hefei, China
| | - Yu Zhang
- State Key Laboratory of Molecular Oncology, National Cancer Center/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Jia-Jie Hao
- State Key Laboratory of Molecular Oncology, National Cancer Center/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Ming-Rong Wang
- State Key Laboratory of Molecular Oncology, National Cancer Center/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Chang-Xiang Yan
- Department of Neurosurgery, Sanbo Brain Hospital, Capital Medical University, Beijing, China
| | - Jing-Hai Wan
- Department of Neurosurgery, National Cancer Center/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
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117
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Molatore S, Kügler A, Irmler M, Wiedemann T, Neff F, Feuchtinger A, Beckers J, Robledo M, Roncaroli F, Pellegata NS. Characterization of neuroendocrine tumors in heterozygous mutant MENX rats: a novel model of invasive medullary thyroid carcinoma. Endocr Relat Cancer 2018; 25:145-162. [PMID: 29142006 DOI: 10.1530/erc-17-0456] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/09/2017] [Accepted: 11/15/2017] [Indexed: 12/18/2022]
Abstract
Rats affected by the MENX syndrome spontaneously develop multiple neuroendocrine tumors (NETs) including adrenal, pituitary and thyroid gland neoplasms. MENX was initially reported to be inherited as a recessive trait and affected rats were found to be homozygous for the predisposing Cdkn1b mutation encoding p27. We here report that heterozygous MENX-mutant rats (p27+/mut) develop the same spectrum of NETs seen in the homozygous (p27mut/mut) animals but with slower progression. Consequently, p27+/mut rats have a significantly shorter lifespan compared with their wild-type (p27+/+) littermates. In the tumors of p27+/mut rats, the wild-type Cdkn1b allele is neither lost nor silenced, implying that p27 is haploinsufficient for tumor suppression in this model. Transcriptome profiling of rat adrenal (pheochromocytoma) and pituitary tumors having different p27 dosages revealed a tissue-specific, dose-dependent effect of p27 on gene expression. In p27+/mut rats, thyroid neoplasms progress to invasive and metastatic medullary thyroid carcinomas (MTCs) accompanied by increased calcitonin levels, as in humans. Comparison of expression signatures of late-stage vs early-stage MTCs from p27+/mut rats identified genes potentially involved in tumor aggressiveness. The expression of a subset of these genes was evaluated in human MTCs and found to be associated with aggressive RET-M918T-positive tumors. Altogether, p27 haploinsufficiency in MENX rats uncovered a novel, representative model of invasive and metastatic MTC exploitable for translational studies of this often aggressive and incurable cancer.
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Affiliation(s)
- Sara Molatore
- Institute for Diabetes and CancerHelmholtz Zentrum München, Neuherberg, Germany
| | - Andrea Kügler
- Institute for Diabetes and CancerHelmholtz Zentrum München, Neuherberg, Germany
| | - Martin Irmler
- Institute of Experimental GeneticsHelmholtz Zentrum München, Neuherberg, Germany
| | - Tobias Wiedemann
- Institute for Diabetes and CancerHelmholtz Zentrum München, Neuherberg, Germany
| | - Frauke Neff
- Institute of Experimental GeneticsHelmholtz Zentrum München, Neuherberg, Germany
| | - Annette Feuchtinger
- Research Unit Analytical PathologyHelmholtz Zentrum München, Neuherberg, Germany
| | - Johannes Beckers
- Institute of Experimental GeneticsHelmholtz Zentrum München, Neuherberg, Germany
- German Center for Diabetes Research (DZD)Neuherberg, Germany
- Technische Universität MünchenChair of Experimental Genetics, Freising, Germany
| | - Mercedes Robledo
- Hereditary Endocrine Cancer GroupSpanish National Cancer Research Centre (CNIO) and ISCIII Center for Biomedical Research on Rare Diseases (CIBERER), Madrid, Spain
| | - Federico Roncaroli
- Division of Neuroscience and Experimental PsychologyFaculty of Medicine, University of Manchester, Manchester, UK
| | - Natalia S Pellegata
- Institute for Diabetes and CancerHelmholtz Zentrum München, Neuherberg, Germany
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118
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Chen G, Abelein A, Nilsson HE, Leppert A, Andrade-Talavera Y, Tambaro S, Hemmingsson L, Roshan F, Landreh M, Biverstål H, Koeck PJB, Presto J, Hebert H, Fisahn A, Johansson J. Bri2 BRICHOS client specificity and chaperone activity are governed by assembly state. Nat Commun 2017; 8:2081. [PMID: 29234026 PMCID: PMC5727130 DOI: 10.1038/s41467-017-02056-4] [Citation(s) in RCA: 61] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2017] [Accepted: 11/02/2017] [Indexed: 11/09/2022] Open
Abstract
Protein misfolding and aggregation is increasingly being recognized as a cause of disease. In Alzheimer’s disease the amyloid-β peptide (Aβ) misfolds into neurotoxic oligomers and assembles into amyloid fibrils. The Bri2 protein associated with Familial British and Danish dementias contains a BRICHOS domain, which reduces Aβ fibrillization as well as neurotoxicity in vitro and in a Drosophila model, but also rescues proteins from irreversible non-fibrillar aggregation. How these different activities are mediated is not known. Here we show that Bri2 BRICHOS monomers potently prevent neuronal network toxicity of Aβ, while dimers strongly suppress Aβ fibril formation. The dimers assemble into high-molecular-weight oligomers with an apparent two-fold symmetry, which are efficient inhibitors of non-fibrillar protein aggregation. These results indicate that Bri2 BRICHOS affects qualitatively different aspects of protein misfolding and toxicity via different quaternary structures, suggesting a means to generate molecular chaperone diversity. The BRICHOS domain is a chaperone that can act against amyloid-β peptide fibril formation and non-fibrillar protein aggregation. Here the authors use a multidisciplinary approach and show that the Bri2 BRICHOS domain has qualitatively different chaperone activities depending on its quaternary structure.
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Affiliation(s)
- Gefei Chen
- Department of Neurobiology, Care Sciences and Society, Center for Alzheimer Research, Division of Neurogeriatrics, Karolinska Institutet, 141 57, Huddinge, Sweden
| | - Axel Abelein
- Department of Neurobiology, Care Sciences and Society, Center for Alzheimer Research, Division of Neurogeriatrics, Karolinska Institutet, 141 57, Huddinge, Sweden
| | - Harriet E Nilsson
- Department of Biosciences and Nutrition, Karolinska Institutet, and School of Technology and Health, KTH Royal institute of Technology, 141 83, Huddinge, Sweden
| | - Axel Leppert
- Department of Neurobiology, Care Sciences and Society, Center for Alzheimer Research, Division of Neurogeriatrics, Karolinska Institutet, 141 57, Huddinge, Sweden
| | - Yuniesky Andrade-Talavera
- Department of Neurobiology, Care Sciences and Society, Center for Alzheimer Research, Neuronal Oscillations Lab, Karolinska Institutet, 171 77, Stockholm, Sweden
| | - Simone Tambaro
- Department of Neurobiology, Care Sciences and Society, Center for Alzheimer Research, Division of Neurogeriatrics, Karolinska Institutet, 141 57, Huddinge, Sweden
| | - Lovisa Hemmingsson
- Department of Neurobiology, Care Sciences and Society, Center for Alzheimer Research, Division of Neurogeriatrics, Karolinska Institutet, 141 57, Huddinge, Sweden.,Department of Physics, Chemistry and Biology, Linköping University, 581 83, Linköping, Sweden
| | - Firoz Roshan
- Department of Neurobiology, Care Sciences and Society, Center for Alzheimer Research, Neuronal Oscillations Lab, Karolinska Institutet, 171 77, Stockholm, Sweden
| | - Michael Landreh
- Department of Chemistry, University of Oxford, South Parks Road, Oxford, OX1 5QY, UK.,Science for Life Laboratory, Department of Microbiology, Tumour and Cell Biology, Karolinska Institutet, Tomtebodavägen 23 A, 171 65, Stockholm, Sweden
| | - Henrik Biverstål
- Department of Neurobiology, Care Sciences and Society, Center for Alzheimer Research, Division of Neurogeriatrics, Karolinska Institutet, 141 57, Huddinge, Sweden.,Department of Physical Organic Chemistry, Latvian Institute of Organic Synthesis, Aizkraukles 21, Riga LV, 1006, Latvia
| | - Philip J B Koeck
- Department of Biosciences and Nutrition, Karolinska Institutet, and School of Technology and Health, KTH Royal institute of Technology, 141 83, Huddinge, Sweden
| | - Jenny Presto
- Department of Neurobiology, Care Sciences and Society, Center for Alzheimer Research, Division of Neurogeriatrics, Karolinska Institutet, 141 57, Huddinge, Sweden
| | - Hans Hebert
- Department of Biosciences and Nutrition, Karolinska Institutet, and School of Technology and Health, KTH Royal institute of Technology, 141 83, Huddinge, Sweden
| | - André Fisahn
- Department of Neurobiology, Care Sciences and Society, Center for Alzheimer Research, Neuronal Oscillations Lab, Karolinska Institutet, 171 77, Stockholm, Sweden
| | - Jan Johansson
- Department of Neurobiology, Care Sciences and Society, Center for Alzheimer Research, Division of Neurogeriatrics, Karolinska Institutet, 141 57, Huddinge, Sweden.
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119
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Ahmad J, Bashir H, Bagheri R, Baig A, Al-Huqail A, Ibrahim MM, Qureshi MI. Drought and salinity induced changes in ecophysiology and proteomic profile of Parthenium hysterophorus. PLoS One 2017; 12:e0185118. [PMID: 28953916 PMCID: PMC5617186 DOI: 10.1371/journal.pone.0185118] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2017] [Accepted: 09/05/2017] [Indexed: 12/27/2022] Open
Abstract
Parthenium hysterophorus is a plant that tolerates drought and salinity to an extremely high degree. Higher expression of stress-responsive proteome contributes for greater defence against abiotic stresses. Thus, P. hysterophorus could be a rich source of genes that encode stress-imparting mechanisms and systems. The present study utilizes comparative physiological and proteomic approaches for identification of key proteins involved in stress-defence of P. hysterophorus. Thirty-days-old plants were exposed to drought (10% PEG 6000) and salinity (160 mM NaCl) for 10 days duration. Both stresses induced oxidative stress estimated in terms of TBARS and H2O2. Levels of both enzymatic and non-enzymatic antioxidants were elevated, more by drought than salinity. Particularly, SOD, GR, CAT and GST proved to be assisting as very commendable defence under drought, as well as salinity. Levels of ascorbate, glutathione and proline were also increased by both stresses, more in response to drought. Comparative proteomics analysis revealed a significant change in relative abundance of 72 proteins under drought and salinity. Drought and salinity increased abundance of 45 and 41 proteins and decreased abundance of 24 and 26 proteins, respectively. Drought and salinity increased and decreased abundance of 31 and 18 proteins, respectively. The functions of identified proteins included those related to defence response (26%), signal transduction (13%), transcription and translation (10%), growth and development (8.5%), photosynthesis (8.5%), metabolism (7%), terpenoid biosynthesis (5.5%), protein modification and transport (7%), oxido-reductase (4%) and Miscellaneous (11%). Among the defence related proteins, antioxidants and HSPs constituted 26% and 21%, respectively. Present study suggests a potential role of defence proteins. Proteins involved in molecular stabilization, formation of osmolytes and wax and contributing to stress-avoiding anatomical features emerged as key and complex mechanisms for imparting stress tolerance to P. hysterophorus.
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Affiliation(s)
- Javed Ahmad
- Department of Biotechnology, Jamia Millia Islamia (Central University), New Delhi, India
| | - Humayra Bashir
- Department of Biotechnology, Jamia Millia Islamia (Central University), New Delhi, India
| | - Rita Bagheri
- Department of Biotechnology, Jamia Millia Islamia (Central University), New Delhi, India
| | - Affan Baig
- Department of Biotechnology, Jamia Millia Islamia (Central University), New Delhi, India
| | - Asma Al-Huqail
- Department of Botany and Microbiology, Science College, King Saud University, Riyadh, Saudi Arabia
| | - Mohamed M. Ibrahim
- Department of Botany and Microbiology, Faculty of Science, Alexandria University, Egypt
- Department of Biology and Horticulture, Bergen Community College, Paramus, New Jersey, United States of America
| | - M. Irfan Qureshi
- Department of Biotechnology, Jamia Millia Islamia (Central University), New Delhi, India
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120
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Garvey M, Ecroyd H, Ray NJ, Gerrard JA, Carver JA. Functional Amyloid Protection in the Eye Lens: Retention of α-Crystallin Molecular Chaperone Activity after Modification into Amyloid Fibrils. Biomolecules 2017; 7:biom7030067. [PMID: 28895938 PMCID: PMC5618248 DOI: 10.3390/biom7030067] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2017] [Revised: 08/21/2017] [Accepted: 09/07/2017] [Indexed: 11/16/2022] Open
Abstract
Amyloid fibril formation occurs from a wide range of peptides and proteins and is typically associated with a loss of protein function and/or a gain of toxic function, as the native structure of the protein undergoes major alteration to form a cross β-sheet array. It is now well recognised that some amyloid fibrils have a biological function, which has led to increased interest in the potential that these so-called functional amyloids may either retain the function of the native protein, or gain function upon adopting a fibrillar structure. Herein, we investigate the molecular chaperone ability of α-crystallin, the predominant eye lens protein which is composed of two related subunits αA- and αB-crystallin, and its capacity to retain and even enhance its chaperone activity after forming aggregate structures under conditions of thermal and chemical stress. We demonstrate that both eye lens α-crystallin and αB-crystallin (which is also found extensively outside the lens) retain, to a significant degree, their molecular chaperone activity under conditions of structural change, including after formation into amyloid fibrils and amorphous aggregates. The results can be related directly to the effects of aging on the structure and chaperone function of α-crystallin in the eye lens, particularly its ability to prevent crystallin protein aggregation and hence lens opacification associated with cataract formation.
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Affiliation(s)
- Megan Garvey
- CSL Limited, 45 Poplar Road, Parkville, VIC 3052, Australia.
| | - Heath Ecroyd
- School of Biological Sciences and the Illawarra Health and Medical Research Institute, University of Wollongong, Wollongong NSW 2522, Australia.
| | - Nicholas J Ray
- Research School of Chemistry, The Australian National University, Acton ACT 2601, Australia.
| | - Juliet A Gerrard
- School of Biological Science and School of Chemical Science, University of Auckland, Auckland 1010, New Zealand.
| | - John A Carver
- Research School of Chemistry, The Australian National University, Acton ACT 2601, Australia.
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121
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Voth W, Jakob U. Stress-Activated Chaperones: A First Line of Defense. Trends Biochem Sci 2017; 42:899-913. [PMID: 28893460 DOI: 10.1016/j.tibs.2017.08.006] [Citation(s) in RCA: 58] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2017] [Revised: 08/18/2017] [Accepted: 08/21/2017] [Indexed: 10/18/2022]
Abstract
Proteins are constantly challenged by environmental stress conditions that threaten their structure and function. Especially problematic are oxidative, acid, and severe heat stress which induce very rapid and widespread protein unfolding and generate conditions that make canonical chaperones and/or transcriptional responses inadequate to protect the proteome. We review here recent advances in identifying and characterizing stress-activated chaperones which are inactive under non-stress conditions but become potent chaperones under specific protein-unfolding stress conditions. We discuss the post-translational mechanisms by which these chaperones sense stress, and consider the role that intrinsic disorder plays in their regulation and function. We examine their physiological roles under both non-stress and stress conditions, their integration into the cellular proteostasis network, and their potential as novel therapeutic targets.
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Affiliation(s)
- Wilhelm Voth
- Department of Molecular, Cellular and Developmental Biology, University of Michigan, Ann Arbor, MI 48109, USA; Department of Molecular Biology, Universitätsmedizin Göttingen, 37073 Göttingen, Germany
| | - Ursula Jakob
- Department of Molecular, Cellular and Developmental Biology, University of Michigan, Ann Arbor, MI 48109, USA; Department of Biological Chemistry, University of Michigan, Ann Arbor, MI 48109, USA.
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122
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Rusmini P, Cristofani R, Galbiati M, Cicardi ME, Meroni M, Ferrari V, Vezzoli G, Tedesco B, Messi E, Piccolella M, Carra S, Crippa V, Poletti A. The Role of the Heat Shock Protein B8 (HSPB8) in Motoneuron Diseases. Front Mol Neurosci 2017; 10:176. [PMID: 28680390 PMCID: PMC5478700 DOI: 10.3389/fnmol.2017.00176] [Citation(s) in RCA: 46] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2017] [Accepted: 05/18/2017] [Indexed: 12/13/2022] Open
Abstract
Amyotrophic lateral sclerosis (ALS) and spinal and bulbar muscular atrophy (SBMA) are two motoneuron diseases (MNDs) characterized by aberrant protein behavior in affected cells. In familial ALS (fALS) and in SBMA specific gene mutations lead to the production of neurotoxic proteins or peptides prone to misfold, which then accumulate in form of aggregates. Notably, some of these proteins accumulate into aggregates also in sporadic ALS (sALS) even if not mutated. To prevent proteotoxic stresses detrimental to cells, misfolded and/or aggregated proteins must be rapidly removed by the protein quality control (PQC) system. The small heat shock protein B8 (HSPB8) is a chaperone induced by harmful events, like proteasome inhibition. HSPB8 is expressed both in motoneuron and muscle cells, which are both targets of misfolded protein toxicity in MNDs. In ALS mice models, in presence of the mutant proteins, HSPB8 is upregulated both in spinal cord and muscle. HSPB8 interacts with the HSP70 co-chaperone BAG3 and enhances the degradation of misfolded proteins linked to sALS, or causative of fALS and of SBMA. HSPB8 acts by facilitating autophagy, thereby preventing misfolded protein accumulation in affected cells. BAG3 and BAG1 compete for HSP70-bound clients and target them for disposal to the autophagy or proteasome, respectively. Enhancing the selective targeting of misfolded proteins by HSPB8-BAG3-HSP70 to autophagy may also decrease their delivery to the proteasome by the BAG1-HSP70 complex, thereby limiting possible proteasome overwhelming. Thus, approaches aimed at potentiating HSPB8-BAG3 may contribute to the maintenance of proteostasis and may delay MNDs progression.
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Affiliation(s)
- Paola Rusmini
- Dipartimento di Scienze Farmacologiche e Biomolecolari (DiSFeB), Centro di Eccellenza sulle Malattie Neurodegenerative, Università degli Studi di MilanoMilano, Italy
| | - Riccardo Cristofani
- Dipartimento di Scienze Farmacologiche e Biomolecolari (DiSFeB), Centro di Eccellenza sulle Malattie Neurodegenerative, Università degli Studi di MilanoMilano, Italy
| | - Mariarita Galbiati
- Dipartimento di Scienze Farmacologiche e Biomolecolari (DiSFeB), Centro di Eccellenza sulle Malattie Neurodegenerative, Università degli Studi di MilanoMilano, Italy
| | - Maria E Cicardi
- Dipartimento di Scienze Farmacologiche e Biomolecolari (DiSFeB), Centro di Eccellenza sulle Malattie Neurodegenerative, Università degli Studi di MilanoMilano, Italy
| | - Marco Meroni
- Dipartimento di Scienze Farmacologiche e Biomolecolari (DiSFeB), Centro di Eccellenza sulle Malattie Neurodegenerative, Università degli Studi di MilanoMilano, Italy
| | - Veronica Ferrari
- Dipartimento di Scienze Farmacologiche e Biomolecolari (DiSFeB), Centro di Eccellenza sulle Malattie Neurodegenerative, Università degli Studi di MilanoMilano, Italy
| | - Giulia Vezzoli
- Dipartimento di Scienze Farmacologiche e Biomolecolari (DiSFeB), Centro di Eccellenza sulle Malattie Neurodegenerative, Università degli Studi di MilanoMilano, Italy
| | - Barbara Tedesco
- Dipartimento di Scienze Farmacologiche e Biomolecolari (DiSFeB), Centro di Eccellenza sulle Malattie Neurodegenerative, Università degli Studi di MilanoMilano, Italy
| | - Elio Messi
- Dipartimento di Scienze Farmacologiche e Biomolecolari (DiSFeB), Centro di Eccellenza sulle Malattie Neurodegenerative, Università degli Studi di MilanoMilano, Italy
| | - Margherita Piccolella
- Dipartimento di Scienze Farmacologiche e Biomolecolari (DiSFeB), Centro di Eccellenza sulle Malattie Neurodegenerative, Università degli Studi di MilanoMilano, Italy
| | - Serena Carra
- Dipartimento di Scienze Biomediche, Metaboliche e Neuroscienze, Università di Modena e Reggio EmiliaModena, Italy
| | - Valeria Crippa
- Dipartimento di Scienze Farmacologiche e Biomolecolari (DiSFeB), Centro di Eccellenza sulle Malattie Neurodegenerative, Università degli Studi di MilanoMilano, Italy.,C. Mondino National Neurological InstitutePavia, Italy
| | - Angelo Poletti
- Dipartimento di Scienze Farmacologiche e Biomolecolari (DiSFeB), Centro di Eccellenza sulle Malattie Neurodegenerative, Università degli Studi di MilanoMilano, Italy.,Centro Interuniversitario sulle Malattie Neurodegenerative, Università degli Studi di Firenze, Roma Tor VergataMilano, Italy
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Tian M, Zhu L, Lin H, Lin Q, Huang P, Yu X, Jing Y. Hsp-27 levels and thrombus burden relate to clinical outcomes in patients with ST-segment elevation myocardial infarction. Oncotarget 2017; 8:73733-73744. [PMID: 29088740 PMCID: PMC5650295 DOI: 10.18632/oncotarget.17852] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2016] [Accepted: 04/26/2017] [Indexed: 12/11/2022] Open
Abstract
High thrombus burden, subsequent distal embolization, and myocardial no-reflow remain a large obstacle that may negate the benefits of urgent coronary revascularization in patients with ST-segment elevation myocardial infarction (STEMI). However, the biological function and clinical association of Hsp-27 with thrombus burden and clinical outcomes in patients with STEMI is not clear. Consecutive patients (n = 146) having STEMI undergoing primary percutaneous coronary intervention (pPCI) within 12 hours from the onset of symptoms were enrolled in this prospective study in the Affiliated Yantai Yuhuangding Hospital of Qingdao University, Yantai, Shangdong, P.R. China. Patients were divided into low thrombus burden and high thrombus burden groups. The present study demonstrated that patients with high-thrombus burden had higher plasma Hsp-27 levels ([32.0 ± 8.6 vs. 58.0 ± 12.3] ng/mL, P < 0.001). The median value of Hsp-27 levels in all patients with STEMI was 45 ng/mL. Using the receiver operating characteristic (ROC) curve analysis, plasma Hsp-27 levels were of significant diagnostic value for high thrombus burden (AUC, 0.847; 95% CI, 0.775–0.918; P < 0.01). The multivariate cox regression analysis demonstrated that Hsp-27 > 45 ng/mL (HR 2.801, 95% CI 1.296–4.789, P = 0.001), were positively correlated with the incidence of major adverse cardiovascular events (MACE). Kaplan-Meier survival analysis demonstrated that MACE-free survival at 180-day follow-up was significantly lower in patients with Hsp-27 > 45 ng/mL (log rank = 10.28, P < 0.001). Our data demonstrate that plasma Hsp-27 was positively correlated with high thrombus burden and the incidence of MACE in patients with STEMI who underwent pPCI.
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Affiliation(s)
- Maozhou Tian
- Department of Cardiac Surgery, The Affiliated Yantai Yuhuangding Hospital of Qingdao University, Yantai, Shangdong 264000, P.R. China
| | - Lingmin Zhu
- Department of Cardiology, The Affiliated Yantai Yuhuangding Hospital of Qingdao University, Yantai, Shangdong 264000, P.R. China
| | - Hongyang Lin
- Emergency Centre, The Affiliated Yantai Yuhuangding Hospital of Qingdao University, Yantai, Shangdong 264000, P.R. China
| | - Qiaoyan Lin
- Department of Cardiology, The Affiliated Yantai Yuhuangding Hospital of Qingdao University, Yantai, Shangdong 264000, P.R. China
| | - Peng Huang
- Department of Cardiology, The Affiliated Yantai Yuhuangding Hospital of Qingdao University, Yantai, Shangdong 264000, P.R. China
| | - Xiao Yu
- Department of Endocrinology, The Affiliated Yantai Yuhuangding Hospital of Qingdao University, Yantai, Shangdong 264000, P.R. China
| | - Yanyan Jing
- Department of Cardiology, The Affiliated Yantai Yuhuangding Hospital of Qingdao University, Yantai, Shangdong 264000, P.R. China
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Heat Shock Proteins in Aquaculture Disease Immunology and Stress Response of Crustaceans. HEAT SHOCK PROTEINS 2017. [DOI: 10.1007/978-3-319-73377-7_10] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/12/2023]
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