1
|
Wang C, Teng L, Liu ZS, Kamalova A, McMenimen KA. HspB5 Chaperone Structure and Activity Are Modulated by Chemical-Scale Interactions in the ACD Dimer Interface. Int J Mol Sci 2023; 25:471. [PMID: 38203641 PMCID: PMC10778692 DOI: 10.3390/ijms25010471] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2023] [Revised: 12/24/2023] [Accepted: 12/27/2023] [Indexed: 01/12/2024] Open
Abstract
Small heat shock proteins (sHsps) are a family of ATP-independent molecular chaperones that function as "holdases" and prevent protein aggregation due to changes in temperature, pH, or oxidation state. sHsps have a conserved α-crystallin domain (ACD), which forms the dimer building block, flanked by variable N- and C-terminal regions. sHsps populate various oligomeric states as a function of their sequestrase activity, and these dynamic structural features allow the proteins to interact with a plethora of cellular substrates. However, the molecular mechanisms of their dynamic conformational assembly and the interactions with various substrates remains unclear. Therefore, it is important to gain insight into the underlying physicochemical properties that influence sHsp structure in an effort to understand their mechanism(s) of action. We evaluated several disease-relevant mutations, D109A, F113Y, R116C, R120G, and R120C, in the ACD of HspB5 for changes to in vitro chaperone activity relative to that of wildtype. Structural characteristics were also evaluated by ANS fluorescence and CD spectroscopy. Our results indicated that mutation Y113F is an efficient holdase, while D109A and R120G, which are found in patients with myofibrillar myopathy and cataracts, respectively, exhibit a large reduction in holdase activity in a chaperone-like light-scattering assay, which indicated alterations in substrate-sHsp interactions. The extent of the reductions in chaperone activities are different among the mutants and specific to the substrate protein, suggesting that while sHsps are able to interact with many substrates, specific interactions provide selectivity for some substrates compared to others. This work is consistent with a model for chaperone activity where key electrostatic interactions in the sHsp dimer provide structural stability and influence both higher-order sHsp interactions and facilitate interactions with substrate proteins that define chaperone holdase activity.
Collapse
Affiliation(s)
- Chenwei Wang
- Program in Biochemistry, Mount Holyoke College, South Hadley, MA 01075, USA; (C.W.); (L.T.); (Z.S.L.)
| | - Lilong Teng
- Program in Biochemistry, Mount Holyoke College, South Hadley, MA 01075, USA; (C.W.); (L.T.); (Z.S.L.)
| | - Zhiyan Silvia Liu
- Program in Biochemistry, Mount Holyoke College, South Hadley, MA 01075, USA; (C.W.); (L.T.); (Z.S.L.)
| | - Aichurok Kamalova
- Program in Neuroscience and Behavior, Mount Holyoke College, South Hadley, MA 01075, USA;
| | - Kathryn A. McMenimen
- Program in Biochemistry, Mount Holyoke College, South Hadley, MA 01075, USA; (C.W.); (L.T.); (Z.S.L.)
- Program in Neuroscience and Behavior, Mount Holyoke College, South Hadley, MA 01075, USA;
- Department of Chemistry, Mount Holyoke College, South Hadley, MA 01075, USA
| |
Collapse
|
2
|
Mukherjee S, Vogl DP, Becker CFW. Site-Specific Glycation of Human Heat Shock Protein (Hsp27) Enhances Its Chaperone Activity. ACS Chem Biol 2023; 18:1760-1771. [PMID: 37449780 PMCID: PMC10442856 DOI: 10.1021/acschembio.3c00214] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2023] [Accepted: 07/03/2023] [Indexed: 07/18/2023]
Abstract
Non-enzymatic posttranslational modifications are believed to affect at least 30% of human proteins, commonly termed glycation. Many of these modifications are implicated in various pathological conditions, e.g., cataract, diabetes, neurodegenerative diseases, and cancer. Chemical protein synthesis enables access to full-length proteins carrying site-specific modifications. One such modification, argpyrimidine (Apy), has been detected in human small heat shock protein Hsp27 and closely related proteins in patient-derived tissues. Thus far, studies have looked into only artificial mixtures of Apy modifications, and only one has analyzed Apy188. We were interested in understanding the impact of such individual Apy modifications on five different arginine sites within the crucial N-terminal domain of Hsp27. By combining protein semisynthesis with biochemical assays on semisynthetic Hsp27 analogues with single-point Apy modification at those sites, we have shown how a seemingly minimal modification within this region results in dramatically altered functional attributes.
Collapse
Affiliation(s)
- Somnath Mukherjee
- University
of Vienna, Faculty of Chemistry, Institute
of Biological Chemistry, Währinger Strasse 38, 1090 Vienna, Austria
| | - Dominik P. Vogl
- University
of Vienna, Faculty of Chemistry, Institute
of Biological Chemistry, Währinger Strasse 38, 1090 Vienna, Austria
- Vienna
Doctoral School in Chemistry, Währinger Strasse 42, 1090 Vienna, Austria
| | - Christian F. W. Becker
- University
of Vienna, Faculty of Chemistry, Institute
of Biological Chemistry, Währinger Strasse 38, 1090 Vienna, Austria
| |
Collapse
|
3
|
Bellanger T, Weidmann S. Is the lipochaperone activity of sHSP a key to the stress response encoded in its primary sequence? Cell Stress Chaperones 2023; 28:21-33. [PMID: 36367671 PMCID: PMC9877275 DOI: 10.1007/s12192-022-01308-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2022] [Revised: 10/28/2022] [Accepted: 10/31/2022] [Indexed: 11/13/2022] Open
Abstract
Several strategies have been put in place by organisms to adapt to their environment. One of these strategies is the production of stress proteins such as sHSPs, which have been widely described over the last 30 years for their role as molecular chaperones. Some sHSPs have, in addition, the particularity to exert a lipochaperone role by interacting with membrane lipids to maintain an optimal membrane fluidity. However, the mechanisms involved in this sHSP-lipid interaction remain poorly understood and described rather sporadically in the literature. This review gathers the information concerning the structure and function of these proteins available in the literature in order to highlight the mechanism involved in this interaction. In addition, analysis of primary sequence data of sHSPs available in database shows that sHSPs can interact with lipids via certain amino acid residues present on some β sheets of these proteins. These residues could have a key role in the structure and/or oligomerization dynamics of sHPSs, which is certainly essential for interaction with membrane lipids and consequently for maintaining optimal cell membrane fluidity.
Collapse
Affiliation(s)
- Tiffany Bellanger
- Univ. Bourgogne Franche-comté, AgroSup Dijon, PAM UMR A 02.102, Dijon, France
| | - Stéphanie Weidmann
- Univ. Bourgogne Franche-comté, AgroSup Dijon, PAM UMR A 02.102, Dijon, France
| |
Collapse
|
4
|
Kaku H, Balaj AR, Rothstein TL. Small Heat Shock Proteins Collaborate with FAIM to Prevent Accumulation of Misfolded Protein Aggregates. Int J Mol Sci 2022; 23:11841. [PMID: 36233145 PMCID: PMC9570119 DOI: 10.3390/ijms231911841] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2022] [Revised: 09/28/2022] [Accepted: 09/29/2022] [Indexed: 11/16/2022] Open
Abstract
Cells and tissues are continuously subject to environmental insults, such as heat shock and oxidative stress, which cause the accumulation of cytotoxic, aggregated proteins. We previously found that Fas Apoptosis Inhibitory Molecule (FAIM) protects cells from stress-induced cell death by preventing abnormal generation of protein aggregates similar to the effect of small heat shock proteins (HSPs). Protein aggregates are often associated with neurodegenerative diseases, including Alzheimer's disease (AD). In this study, we sought to determine how FAIM protein dynamics change during cellular stress and how FAIM prevents the formation of amyloid-β aggregates/fibrils, one of the pathological hallmarks of AD. Here, we found that the majority of FAIM protein shifts to the detergent-insoluble fraction in response to cellular stress. A similar shift to the insoluble fraction was also observed in small heat shock protein (sHSP) family molecules, such as HSP27, after stress. We further demonstrate that FAIM is recruited to sHSP-containing complexes after cellular stress induction. These data suggest that FAIM might prevent protein aggregation in concert with sHSPs. In fact, we observed the additional effect of FAIM and HSP27 on the prevention of protein aggregates using an in vitro amyloid-β aggregation model system. Our work provides new insights into the interrelationships among FAIM, sHSPs, and amyloid-β aggregation.
Collapse
Affiliation(s)
- Hiroaki Kaku
- Department of Investigative Medicine, Western Michigan University Homer Stryker M.D. School of Medicine, Kalamazoo, MI 49007, USA
| | - Allison R Balaj
- Department of Investigative Medicine, Western Michigan University Homer Stryker M.D. School of Medicine, Kalamazoo, MI 49007, USA
| | - Thomas L Rothstein
- Department of Investigative Medicine, Western Michigan University Homer Stryker M.D. School of Medicine, Kalamazoo, MI 49007, USA
| |
Collapse
|
5
|
Yerabandi N, Kouznetsova VL, Kesari S, Tsigelny IF. The role of BAG3 in dilated cardiomyopathy and its association with Charcot-Marie-Tooth disease type 2. ACTA MYOLOGICA : MYOPATHIES AND CARDIOMYOPATHIES : OFFICIAL JOURNAL OF THE MEDITERRANEAN SOCIETY OF MYOLOGY 2022; 41:59-75. [PMID: 35832504 PMCID: PMC9237749 DOI: 10.36185/2532-1900-071] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/26/2022] [Accepted: 06/13/2022] [Indexed: 11/03/2022]
Abstract
Bcl2-associated athanogene 3 (BAG3) is a multifunctional cochaperone responsible for protein quality control within cells. BAG3 interacts with chaperones HSPB8 and Hsp70 to transport misfolded proteins to the Microtubule Organizing Center (MTOC) and degrade them in autophagosomes in a process known as Chaperone Assisted Selective Autophagy (CASA). Mutations in the second conserved IPV motif of BAG3 are known to cause Dilated Cardiomyopathy (DCM) by inhibiting adequate removal of non-native proteins. The proline 209 to leucine (P209L) BAG3 mutant in particular causes the aggregation of BAG3 and misfolded proteins as well as the sequestration of essential chaperones. The exact mechanisms of protein aggregation in DCM are unknown. However, the similar presence of insoluble protein aggregates in Charcot-Marie-Tooth disease type 2 (CMT2) induced by the proline 182 to leucine (P182L) HSPB1 mutant points to a possible avenue for future research: IPV motif. In this review, we summarize the molecular mechanisms of CASA and the currently known pathological effects of mutated BAG3 in DCM. Additionally, we will provide insight on the importance of the IPV motif in protein aggregation by analyzing a potential association between DCM and CMT2.
Collapse
Affiliation(s)
- Nitya Yerabandi
- REHS program, San Diego Supercomputer Center, University of California, San Diego, CA, USA
| | - Valentina L. Kouznetsova
- San Diego Supercomputer Center, University of California, San Diego, CA, USA,Biana, La Jolla, CA, USA
| | | | - Igor F. Tsigelny
- Correspondence Igor F. Tsigelny Department of Neurosciences, University of California, San Diego, 9500 Gilman Drive, La Jolla, CA 92093-0505, USA. E-mail:
| |
Collapse
|
6
|
The Role of Hsp27 in Chemotherapy Resistance. Biomedicines 2022; 10:biomedicines10040897. [PMID: 35453647 PMCID: PMC9028095 DOI: 10.3390/biomedicines10040897] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2022] [Revised: 04/05/2022] [Accepted: 04/09/2022] [Indexed: 01/27/2023] Open
Abstract
Heat shock protein (Hsp)-27 is a small-sized, ATP-independent, chaperone molecule that is overexpressed under conditions of cellular stress such as oxidative stress and heat shock, and protects proteins from unfolding, thus facilitating proteostasis and cellular survival. Despite its protective role in normal cell physiology, Hsp27 overexpression in various cancer cell lines is implicated in tumor initiation, progression, and metastasis through various mechanisms, including modulation of the SWH pathway, inhibition of apoptosis, promotion of EMT, adaptation of CSCs in the tumor microenvironment and induction of angiogenesis. Investigation of the role of Hsp27 in the resistance of various cancer cell types against doxorubicin, herceptin/trastuzumab, gemcitabine, 5-FU, temozolomide, and paclitaxel suggested that Hsp27 overexpression promotes cancer cell survival against the above-mentioned chemotherapeutic agents. Conversely, Hsp27 inhibition increased the efficacy of those chemotherapy drugs, both in vitro and in vivo. Although numerous signaling pathways and molecular mechanisms were implicated in that chemotherapy resistance, Hsp27 most commonly contributed to the upregulation of Akt/mTOR signaling cascade and inactivation of p53, thus inhibiting the chemotherapy-mediated induction of apoptosis. Blockage of Hsp27 could enhance the cytotoxic effect of well-established chemotherapeutic drugs, especially in difficult-to-treat cancer types, ultimately improving patients’ outcomes.
Collapse
|
7
|
Holguin BA, Hildenbrand ZL, Bernal RA. Insights Into the Role of Heat Shock Protein 27 in the Development of Neurodegeneration. Front Mol Neurosci 2022; 15:868089. [PMID: 35431800 PMCID: PMC9005852 DOI: 10.3389/fnmol.2022.868089] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2022] [Accepted: 03/09/2022] [Indexed: 12/11/2022] Open
Abstract
Small heat shock protein 27 is a critically important chaperone, that plays a key role in several essential and varied physiological processes. These include thermotolerance, apoptosis, cytoskeletal dynamics, cell differentiation, protein folding, among others. Despite its relatively small size and intrinsically disordered termini, it forms large and polydisperse oligomers that are in equilibrium with dimers. This equilibrium is driven by transient interactions between the N-terminal region, the α-crystallin domain, and the C-terminal region. The continuous redistribution of binding partners results in a conformationally dynamic protein that allows it to adapt to different functions where substrate capture is required. However, the intrinsic disorder of the amino and carboxy terminal regions and subsequent conformational variability has made structural investigations challenging. Because heat shock protein 27 is critical for so many key cellular functions, it is not surprising that it also has been linked to human disease. Charcot-Marie-Tooth and distal hereditary motor neuropathy are examples of neurodegenerative disorders that arise from single point mutations in heat shock protein 27. The development of possible treatments, however, depends on our understanding of its normal function at the molecular level so we might be able to understand how mutations manifest as disease. This review will summarize recent reports describing investigations into the structurally elusive regions of Hsp27. Recent insights begin to provide the required context to explain the relationship between a mutation and the resulting loss or gain of function that leads to Charcot-Marie Tooth disease and distal hereditary motor neuropathy.
Collapse
|
8
|
Ryder BD, Wydorski PM, Hou Z, Joachimiak LA. Chaperoning shape-shifting tau in disease. Trends Biochem Sci 2022; 47:301-313. [PMID: 35045944 DOI: 10.1016/j.tibs.2021.12.009] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2021] [Revised: 12/14/2021] [Accepted: 12/16/2021] [Indexed: 02/07/2023]
Abstract
Many neurodegenerative diseases, including Alzheimer's, originate from the conversion of proteins into pathogenic conformations. The microtubule-associated protein tau converts into β-sheet-rich amyloid conformations, which underlie pathology in over 25 related tauopathies. Structural studies of tau amyloid fibrils isolated from human tauopathy tissues have revealed that tau adopts diverse structural polymorphs, each linked to a different disease. Molecular chaperones play central roles in regulating tau function and amyloid assembly in disease. New data supports the model that chaperones selectively recognize different conformations of tau to limit the accumulation of proteotoxic species. The challenge now is to understand how chaperones influence disease processes across different tauopathies, which will help guide the development of novel conformation-specific diagnostic and therapeutic strategies.
Collapse
Affiliation(s)
- Bryan D Ryder
- Molecular Biophysics Graduate Program, University of Texas Southwestern Medical Center, Dallas, TX 75390, USA; Center for Alzheimer's and Neurodegenerative Diseases, Peter O'Donnell Jr. Brain Institute, University of Texas Southwestern Medical Center, Dallas, TX 75390, USA
| | - Pawel M Wydorski
- Molecular Biophysics Graduate Program, University of Texas Southwestern Medical Center, Dallas, TX 75390, USA; Center for Alzheimer's and Neurodegenerative Diseases, Peter O'Donnell Jr. Brain Institute, University of Texas Southwestern Medical Center, Dallas, TX 75390, USA
| | - Zhiqiang Hou
- Center for Alzheimer's and Neurodegenerative Diseases, Peter O'Donnell Jr. Brain Institute, University of Texas Southwestern Medical Center, Dallas, TX 75390, USA
| | - Lukasz A Joachimiak
- Center for Alzheimer's and Neurodegenerative Diseases, Peter O'Donnell Jr. Brain Institute, University of Texas Southwestern Medical Center, Dallas, TX 75390, USA; Department of Biochemistry, University of Texas Southwestern Medical Center, Dallas, TX 75390, USA.
| |
Collapse
|
9
|
Gonçalves CC, Sharon I, Schmeing TM, Ramos CHI, Young JC. The chaperone HSPB1 prepares protein aggregates for resolubilization by HSP70. Sci Rep 2021; 11:17139. [PMID: 34429462 PMCID: PMC8384840 DOI: 10.1038/s41598-021-96518-x] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2021] [Accepted: 08/11/2021] [Indexed: 01/22/2023] Open
Abstract
In human cells under stress conditions, misfolded polypeptides can form potentially cytotoxic insoluble aggregates. To eliminate aggregates, the HSP70 chaperone machinery extracts and resolubilizes polypeptides for triage to refolding or degradation. Yeast and bacterial chaperones of the small heat-shock protein (sHSP) family can bind substrates at early stages of misfolding, during the aggregation process. The co-aggregated sHSPs then facilitate downstream disaggregation by HSP70. Because it is unknown whether a human sHSP has this activity, we investigated the disaggregation role of human HSPB1. HSPB1 co-aggregated with unfolded protein substrates, firefly luciferase and mammalian lactate dehydrogenase. The co-aggregates formed with HSPB1 were smaller and more regularly shaped than those formed in its absence. Importantly, co-aggregation promoted the efficient disaggregation and refolding of the substrates, led by HSP70. HSPB1 itself was also extracted during disaggregation, and its homo-oligomerization ability was not required. Therefore, we propose that a human sHSP is an integral part of the chaperone network for protein disaggregation.
Collapse
Affiliation(s)
- Conrado C Gonçalves
- Department of Biochemistry, McGill University, 3655 Promenade Sir William Osler, Room 900, Montreal, QC, H3G 1Y6, Canada
| | - Itai Sharon
- Department of Biochemistry, McGill University, 3649 Promenade Sir William Osler, Room 457, Montreal, QC, H3G 0B1, Canada
| | - T Martin Schmeing
- Department of Biochemistry, McGill University, 3649 Promenade Sir William Osler, Room 457, Montreal, QC, H3G 0B1, Canada
| | - Carlos H I Ramos
- Institute of Chemistry, University of Campinas (UNICAMP), Campinas, SP, 13083-970, Brazil
| | - Jason C Young
- Department of Biochemistry, McGill University, 3655 Promenade Sir William Osler, Room 900, Montreal, QC, H3G 1Y6, Canada.
| |
Collapse
|
10
|
Ferese R, Campopiano R, Scala S, D'Alessio C, Storto M, Buttari F, Centonze D, Logroscino G, Zecca C, Zampatti S, Fornai F, Cianci V, Manfroi E, Giardina E, Magnani M, Suppa A, Novelli G, Gambardella S. Cohort Analysis of 67 Charcot-Marie-Tooth Italian Patients: Identification of New Mutations and Broadening of Phenotype Expression Produced by Rare Variants. Front Genet 2021; 12:682050. [PMID: 34354735 PMCID: PMC8329958 DOI: 10.3389/fgene.2021.682050] [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: 03/17/2021] [Accepted: 06/17/2021] [Indexed: 11/13/2022] Open
Abstract
Charcot-Marie-Tooth (CMT) disease is the most prevalent inherited motor sensory neuropathy, which clusters a clinically and genetically heterogeneous group of disorders with more than 90 genes associated with different phenotypes. The goal of this study is to identify the genetic features in the recruited cohort of patients, highlighting the role of rare variants in the genotype-phenotype correlation. We enrolled 67 patients and applied a diagnostic protocol including multiple ligation-dependent probe amplification for copy number variation (CNV) detection of PMP22 locus, and next-generation sequencing (NGS) for sequencing of 47 genes known to be associated with CMT and routinely screened in medical genetics. This approach allowed the identification of 26 patients carrying a whole gene CNV of PMP22. In the remaining 41 patients, NGS identified the causative variants in eight patients in the genes HSPB1, MFN2, KIF1A, GDAP1, MTMR2, SH3TC2, KIF5A, and MPZ (five new vs. three previously reported variants; three sporadic vs. five familial variants). Familial segregation analysis allowed to correctly interpret two variants, initially reported as "variants of uncertain significance" but re-classified as pathological. In this cohort is reported a patient carrying a novel familial mutation in the tail domain of KIF5A [a protein domain previously associated with familial amyotrophic lateral sclerosis (ALS)], and a CMT patient carrying a HSPB1 mutation, previously reported in ALS. These data indicate that combined tools for gene association in medical genetics allow dissecting unexpected phenotypes associated with previously known or unknown genotypes, thus broadening the phenotype expression produced by either pathogenic or undefined variants. Clinical trial registration: ClinicalTrials.gov (NCT03084224).
Collapse
Affiliation(s)
| | | | | | | | | | | | - Diego Centonze
- IRCCS Neuromed, Pozzilli, Italy.,Laboratory of Synaptic Immunopathology, Department of Systems Medicine, Tor Vergata University, Rome, Italy
| | - Giancarlo Logroscino
- Center for Neurodegenerative Diseases and the Aging Brain, Department of Clinical Research in Neurology, The University of Bari "Aldo Moro," "Pia Fondazione Card G. Panico" Hospital Tricase, Lecce, Italy.,Department of Basic Medicine Neuroscience and Sense Organs, University "Aldo Moro" Bari, Bari, Italy
| | - Chiara Zecca
- Center for Neurodegenerative Diseases and the Aging Brain, Department of Clinical Research in Neurology, The University of Bari "Aldo Moro," "Pia Fondazione Card G. Panico" Hospital Tricase, Lecce, Italy
| | - Stefania Zampatti
- IRCCS Neuromed, Pozzilli, Italy.,Genomic Medicine Laboratory, IRCCS Fondazione Santa Lucia, Rome, Italy
| | - Francesco Fornai
- IRCCS Neuromed, Pozzilli, Italy.,Department of Translational Research and New Technologies in Medicine and Surgery, University of Pisa, Pisa, Italy
| | - Vittoria Cianci
- Regional Epilepsy Centre, Great Metropolitan Hospital Bianchi-Melacrino-Morelli, Reggio Calabria, Italy
| | - Elisabetta Manfroi
- Department of Neuroscience- Neurogenetics, Santa Maria Hospital, Terni, Italy
| | - Emiliano Giardina
- Genomic Medicine Laboratory, IRCCS Fondazione Santa Lucia, Rome, Italy.,Department of Biomedicine and Prevention, University of Rome "Tor Vergata," Rome, Italy
| | - Mauro Magnani
- Department of Biomolecular Sciences, University of Urbino "Carlo Bo," Urbino, Italy
| | - Antonio Suppa
- IRCCS Neuromed, Pozzilli, Italy.,Department of Human Neurosciences, Sapienza University of Rome, Rome, Italy
| | - Giuseppe Novelli
- IRCCS Neuromed, Pozzilli, Italy.,Department of Biomedicine and Prevention, University of Rome "Tor Vergata," Rome, Italy
| | - Stefano Gambardella
- IRCCS Neuromed, Pozzilli, Italy.,Department of Biomolecular Sciences, University of Urbino "Carlo Bo," Urbino, Italy
| |
Collapse
|
11
|
Kho J, Pham PC, Kwon S, Huang AY, Rivers JP, Wang H, Ecroyd H, Donald WA, McAlpine SR. De Novo Design, Synthesis, and Mechanistic Evaluation of Short Peptides That Mimic Heat Shock Protein 27 Activity. ACS Med Chem Lett 2021; 12:713-719. [PMID: 34055216 DOI: 10.1021/acsmedchemlett.0c00609] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2020] [Accepted: 04/01/2021] [Indexed: 01/17/2023] Open
Abstract
We report the first small molecule peptides based on the N-terminal sequence of heat shock protein 27 (Hsp27, gene HSPB1) that demonstrates chaperone-like activity. The peptide, comprising the SWDPF sequence located at Hsp27's amino (N)-terminal domain, directly regulates protein aggregation events, maintaining the disaggregated state of the model protein, citrate synthase. While traditional inhibitors of protein aggregation act via regulation of a protein that facilitates aggregation or disaggregation, our molecules are the first small peptides between 5 and 8 amino acids in length that are based on the N-terminus of Hsp27 and directly control protein aggregation. The presented strategy showcases a new approach for developing small peptides that control protein aggregation in proteins with high aggregate levels, making them a useful approach in developing new drugs.
Collapse
Affiliation(s)
- Jessica Kho
- School of Chemistry, University of New South Wales, Sydney, NSW 2052, Australia
| | - P. Chi Pham
- School of Chemistry, University of New South Wales, Sydney, NSW 2052, Australia
| | - Suhyeon Kwon
- School of Chemistry, University of New South Wales, Sydney, NSW 2052, Australia
| | - Alana Y. Huang
- School of Chemistry, University of New South Wales, Sydney, NSW 2052, Australia
| | - Joel P. Rivers
- School of Chemistry, University of New South Wales, Sydney, NSW 2052, Australia
| | - Huixin Wang
- School of Chemistry, University of New South Wales, Sydney, NSW 2052, Australia
| | - Heath Ecroyd
- Department of Chemistry and Molecular Bioscience, University of Wollongong, Wollongong, NSW 2522, Australia
| | - W. Alexander Donald
- School of Chemistry, University of New South Wales, Sydney, NSW 2052, Australia
| | - Shelli R. McAlpine
- School of Chemistry, University of California Irvine, Irvine, California 92697, United States
| |
Collapse
|
12
|
Alderson TR, Adriaenssens E, Asselbergh B, Pritišanac I, Van Lent J, Gastall HY, Wälti MA, Louis JM, Timmerman V, Baldwin AJ, Lp Benesch J. A weakened interface in the P182L variant of HSP27 associated with severe Charcot-Marie-Tooth neuropathy causes aberrant binding to interacting proteins. EMBO J 2021; 40:e103811. [PMID: 33644875 PMCID: PMC8047445 DOI: 10.15252/embj.2019103811] [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: 11/05/2019] [Revised: 01/10/2021] [Accepted: 01/14/2021] [Indexed: 01/18/2023] Open
Abstract
HSP27 is a human molecular chaperone that forms large, dynamic oligomers and functions in many aspects of cellular homeostasis. Mutations in HSP27 cause Charcot‐Marie‐Tooth (CMT) disease, the most common inherited disorder of the peripheral nervous system. A particularly severe form of CMT disease is triggered by the P182L mutation in the highly conserved IxI/V motif of the disordered C‐terminal region, which interacts weakly with the structured core domain of HSP27. Here, we observed that the P182L mutation disrupts the chaperone activity and significantly increases the size of HSP27 oligomers formed in vivo, including in motor neurons differentiated from CMT patient‐derived stem cells. Using NMR spectroscopy, we determined that the P182L mutation decreases the affinity of the HSP27 IxI/V motif for its own core domain, leaving this binding site more accessible for other IxI/V‐containing proteins. We identified multiple IxI/V‐bearing proteins that bind with higher affinity to the P182L variant due to the increased availability of the IxI/V‐binding site. Our results provide a mechanistic basis for the impact of the P182L mutation on HSP27 and suggest that the IxI/V motif plays an important, regulatory role in modulating protein–protein interactions.
Collapse
Affiliation(s)
- T Reid Alderson
- Chemistry Research Laboratory, University of Oxford, Oxford, UK.,Laboratory of Chemical Physics, National Institutes of Health, Bethesda, MD, USA
| | - Elias Adriaenssens
- Peripheral Neuropathy Research Group, Department of Biomedical Sciences, Institute Born Bunge, University of Antwerp, Antwerpen, Belgium
| | - Bob Asselbergh
- Neuromics Support Facility, VIB Center for Molecular Neurology, VIB, Antwerpen, Belgium.,Neuromics Support Facility, Department of Biomedical Sciences, University of Antwerp, Antwerp, Belgium
| | - Iva Pritišanac
- Molecular Medicine Program, The Hospital for Sick Children, Toronto, ON, Canada
| | - Jonas Van Lent
- Peripheral Neuropathy Research Group, Department of Biomedical Sciences, Institute Born Bunge, University of Antwerp, Antwerpen, Belgium
| | - Heidi Y Gastall
- Chemistry Research Laboratory, University of Oxford, Oxford, UK
| | - Marielle A Wälti
- Laboratory of Chemical Physics, National Institutes of Health, Bethesda, MD, USA
| | - John M Louis
- Laboratory of Chemical Physics, National Institutes of Health, Bethesda, MD, USA
| | - Vincent Timmerman
- Peripheral Neuropathy Research Group, Department of Biomedical Sciences, Institute Born Bunge, University of Antwerp, Antwerpen, Belgium
| | | | | |
Collapse
|
13
|
Li Y, Orahoske CM, Geldenhuys WJ, Bhattarai A, Sabbagh A, Bobba V, Salem FM, Zhang W, Shukla GC, Lathia JD, Wang B, Su B. Small-Molecule HSP27 Inhibitor Abolishes Androgen Receptors in Glioblastoma. J Med Chem 2021; 64:1570-1583. [PMID: 33523674 PMCID: PMC8284899 DOI: 10.1021/acs.jmedchem.0c01537] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
Androgen receptor (AR) contributes to the progression of glioblastoma (GBM), and antiandrogen agents have the potential to be used for the treatment of GBM. However, AR mutation commonly happens in GBM, which makes the antiandrogen agents less effective. Heat shock 27 kDa protein (HSP27) is a well-documented chaperone protein to stabilize ARs. Inhibition of HSP27 results in AR degradation regardless of the mutation status of ARs, which makes HSP27 a good target to abolish ARs in GBM. Compound I is a HSP27 inhibitor that significantly induces AR degradation in GBM cells via the proteasomal pathway, and it selectively inhibits AR-overexpressed GBM cell growth with IC50 values around 5 nM. The compound also significantly inhibits in vivo GBM xenograft at 20 mg/kg and does not cause toxicity to mice up to 80 mg/kg. These results suggest that targeting HSP27 to induce AR degradation in GBM is a promising and novel treatment.
Collapse
Affiliation(s)
- Yaxin Li
- Department of Chemistry, Center for Gene Regulation in Health and Disease, College of Sciences and Health Professions, Cleveland State University, 2121 Euclid Avenue, Cleveland, Ohio 44115, United States
| | - Cody M Orahoske
- Department of Chemistry, Center for Gene Regulation in Health and Disease, College of Sciences and Health Professions, Cleveland State University, 2121 Euclid Avenue, Cleveland, Ohio 44115, United States
| | - Werner J Geldenhuys
- Department of Pharmaceutical Sciences, School of Pharmacy, West Virginia University, Morgantown, West Virginia 26506, United States
| | - Asmita Bhattarai
- Department of Biological, Geological, and Environmental Sciences, Center for Gene Regulation in Health and Disease, College of Sciences and Health Professions, Cleveland State University, 2121 Euclid Avenue, Cleveland, Ohio 44115, United States
| | - Abboud Sabbagh
- Department of Chemistry, Center for Gene Regulation in Health and Disease, College of Sciences and Health Professions, Cleveland State University, 2121 Euclid Avenue, Cleveland, Ohio 44115, United States
| | - Viharika Bobba
- Department of Chemistry, Center for Gene Regulation in Health and Disease, College of Sciences and Health Professions, Cleveland State University, 2121 Euclid Avenue, Cleveland, Ohio 44115, United States
| | - Fatma M Salem
- Department of Chemistry, Center for Gene Regulation in Health and Disease, College of Sciences and Health Professions, Cleveland State University, 2121 Euclid Avenue, Cleveland, Ohio 44115, United States
| | - Wenjing Zhang
- Department of Chemistry, Center for Gene Regulation in Health and Disease, College of Sciences and Health Professions, Cleveland State University, 2121 Euclid Avenue, Cleveland, Ohio 44115, United States
| | - Girish C Shukla
- Department of Biological, Geological, and Environmental Sciences, Center for Gene Regulation in Health and Disease, College of Sciences and Health Professions, Cleveland State University, 2121 Euclid Avenue, Cleveland, Ohio 44115, United States
| | - Justin D Lathia
- Department of Biological, Geological, and Environmental Sciences, Center for Gene Regulation in Health and Disease, College of Sciences and Health Professions, Cleveland State University, 2121 Euclid Avenue, Cleveland, Ohio 44115, United States
- Department of Molecular Medicine, Lerner Research Institute, Cleveland Clinic, and Case Comprehensive Cancer Center, Cleveland, Ohio 44195, United States
| | - Bingcheng Wang
- Rammelkamp Center for Research and Department of Medicine, MetroHealth Campus, Case Comprehensive Cancer Center, Case Western Reserve University School of Medicine, Cleveland, Ohio 44109, United States
| | - Bin Su
- Department of Chemistry, Center for Gene Regulation in Health and Disease, College of Sciences and Health Professions, Cleveland State University, 2121 Euclid Avenue, Cleveland, Ohio 44115, United States
| |
Collapse
|
14
|
Junprung W, Supungul P, Tassanakajon A. Structure, gene expression, and putative functions of crustacean heat shock proteins in innate immunity. DEVELOPMENTAL AND COMPARATIVE IMMUNOLOGY 2021; 115:103875. [PMID: 32987013 DOI: 10.1016/j.dci.2020.103875] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/06/2020] [Revised: 09/18/2020] [Accepted: 09/20/2020] [Indexed: 06/11/2023]
Abstract
Heat shock proteins (HSPs) are molecular chaperones with critical roles in the maintenance of cellular proteostasis. HSPs, which regulate protein folding and refolding, assembly, translocation, and degradation, are induced in response to physiological and environmental stressors. In recent years, HSPs have been recognized for their potential role in immunity; in particular, these proteins elicit a variety of immune responses to infection and modulate inflammation. This review focuses on delineating the structural and functional roles of crustacean HSPs in the innate immune response. Members of crustacean HSPs include high molecular weight HSPs (HSP90, HSP70, and HSP60) and small molecular weight HSPs (HSP21 and HSP10). The sequences and structures of these HSPs are highly conserved across various crustacean species, indicating strong evolutionary links among this group of organisms. The expression of HSP-encoding genes across different crustacean species is significantly upregulated upon exposure to a wide range of pathogens, emphasizing the important role of HSPs in the immune response. Functional studies of crustacean HSPs, particularly HSP70s, have demonstrated their involvement in the activation of several immune pathways, including those mediating anti-bacterial resistance and combating viral infections, upon heat exposure. The immunomodulatory role of HSPs indicates their potential use as an immunostimulant to enhance shrimp health for control of disease in aquaculture.
Collapse
Affiliation(s)
- Wisarut Junprung
- Center of Excellence for Molecular Biology and Genomics of Shrimp, Department of Biochemistry, Faculty of Science, Chulalongkorn University, Bangkok, 10330, Thailand
| | - Premruethai Supungul
- Aquatic Molecular Genetics and Biotechnology Laboratory, National Center for Genetic Engineering and Biotechnology (BIOTEC), National Science and Technology Development Agency (NSTDA), 113 Paholyothin Rd, Klong Luang, Pathum Thani, 12120, Thailand
| | - Anchalee Tassanakajon
- Center of Excellence for Molecular Biology and Genomics of Shrimp, Department of Biochemistry, Faculty of Science, Chulalongkorn University, Bangkok, 10330, Thailand.
| |
Collapse
|
15
|
Chen X, Li P, Zhang G, Kang L, Qin B, Mao X, Qin M, Cao Y, Wang Y, Guan H. Comprehensive Profiling of Proteome and Ubiquitome Changes in Human Lens Epithelial Cell Line after Ultraviolet-B Irradiation. ACS OMEGA 2020; 5:32171-32182. [PMID: 33376855 PMCID: PMC7758888 DOI: 10.1021/acsomega.0c03088] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/26/2020] [Accepted: 11/20/2020] [Indexed: 05/08/2023]
Abstract
Ultraviolet-B (UVB) is a recognized risk factor for age-related cataract (ARC) and can cause various changes, including ubiquitination, in lens epithelial cells (LECs). However, the relationship between ubiquitination and ARC is unclear. Herein, we used UVB-irradiated human lens epithelial cell line (SRA01/04) representing the cell model of ARC to investigate the profile changes in the proteome and ubiquitome. A total of 552 differentially expressed proteins (DEPs) and 871 differentially ubiquitinated proteins (DUPs) were identified, and 9 ubiquitination motifs were found. Bioinformatics analysis revealed diverse pathways and biological processes of differential proteins and several DNA damage repair proteins that were potentially mediated via ubiquitin-proteasome pathway. We validated the decreased protein expression of DNA-directed RNA polymerase II subunit RPB2 (POLR2B) in both human cataract capsule tissues and UVB-treated SRA01/04 cells and found that treatment with proteasome inhibitor (MG-132) could reverse the protein level of POLR2B in UVB-irradiated SRA01/04 cells. Our data provide novel information regarding protein expressions and ubiquitination modifications in UVB-induced oxidative damage model. This study might offer a cell-level reference to further investigate the pathogenesis of ARC.
Collapse
|
16
|
Identification of Differential Gene Expression Pattern in Lens Epithelial Cells Derived from Cataractous and Noncataractous Lenses of Shumiya Cataract Rat. BIOMED RESEARCH INTERNATIONAL 2020; 2020:7319590. [PMID: 33204712 PMCID: PMC7652612 DOI: 10.1155/2020/7319590] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/25/2020] [Revised: 09/10/2020] [Accepted: 10/16/2020] [Indexed: 02/07/2023]
Abstract
The Shumiya cataract rat (SCR) is a model for hereditary cataract. Two-thirds of these rats develop lens opacity within 10-11 weeks. Onset of cataract is attributed to the synergetic effect of lanosterol synthase (Lss) and farnesyl-diphosphate farnesyltransferase 1 (Fdft1) mutant alleles that lead to cholesterol deficiency in the lenses, which in turn adversely affects lens biology including the growth and differentiation of lens epithelial cells (LECs). Nevertheless, the molecular events and changes in gene expression associated with the onset of lens opacity in SCR are poorly understood. In the present study, a microarray-based approach was employed to analyze comparative gene expression changes in LECs isolated from the precataractous and cataractous stages of lenses of 5-week-old SCRs. The changes in gene expression observed in microarray results in the LECs were further validated using real-time reverse transcribed quantitative PCR (RT-qPCR) in 5-, 8-, and 10-week-old SCRs. A mild posterior and cortical opacity was observed in 5-week-old rats. Expressions of approximately 100 genes, including the major intrinsic protein of the lens fiber (Mip and Aquaporin 0), deoxyribonuclease II beta (Dnase2B), heat shock protein B1 (HspB1), and crystallin γ (γCry) B, C, and F, were found to be significantly downregulated (0.07-0.5-fold) in rat LECs derived from cataract lenses compared to that in noncataractous lenses (control). Thus, our study was aimed at identifying the gene expression patterns during cataract formation in SCRs, which may be responsible for cataractogenesis in SCR. We proposed that cataracts in SCR are associated with reduced expression of these lens genes that have been reported to be related with lens fiber differentiation. Our findings may have wider implications in understanding the effect of cholesterol deficiency and the role of cholesterol-lowering therapeutics on cataractogenesis.
Collapse
|
17
|
Nappi L, Aguda AH, Nakouzi NA, Lelj-Garolla B, Beraldi E, Lallous N, Thi M, Moore S, Fazli L, Battsogt D, Stief S, Ban F, Nguyen NT, Saxena N, Dueva E, Zhang F, Yamazaki T, Zoubeidi A, Cherkasov A, Brayer GD, Gleave M. Ivermectin inhibits HSP27 and potentiates efficacy of oncogene targeting in tumor models. J Clin Invest 2020; 130:699-714. [PMID: 31845908 PMCID: PMC6994194 DOI: 10.1172/jci130819] [Citation(s) in RCA: 32] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2019] [Accepted: 10/22/2019] [Indexed: 01/07/2023] Open
Abstract
HSP27 is highly expressed in, and supports oncogene addiction of, many cancers. HSP27 phosphorylation is a limiting step for activation of this protein and a target for inhibition, but its highly disordered structure challenges rational structure-guided drug discovery. We performed multistep biochemical, structural, and computational experiments to define a spherical 24-monomer complex composed of 12 HSP27 dimers with a phosphorylation pocket flanked by serine residues between their N-terminal domains. Ivermectin directly binds this pocket to inhibit MAPKAP2-mediated HSP27 phosphorylation and depolymerization, thereby blocking HSP27-regulated survival signaling and client-oncoprotein interactions. Ivermectin potentiated activity of anti-androgen receptor and anti-EGFR drugs in prostate and EGFR/HER2-driven tumor models, respectively, identifying a repurposing approach for cotargeting stress-adaptive responses to overcome resistance to inhibitors of oncogenic pathway signaling.
Collapse
Affiliation(s)
- Lucia Nappi
- Department of Urologic Sciences, Vancouver Prostate Centre, and
| | | | | | | | - Eliana Beraldi
- Department of Urologic Sciences, Vancouver Prostate Centre, and
| | - Nada Lallous
- Department of Urologic Sciences, Vancouver Prostate Centre, and
| | - Marisa Thi
- Department of Urologic Sciences, Vancouver Prostate Centre, and
| | - Susan Moore
- Department of Urologic Sciences, Vancouver Prostate Centre, and
| | - Ladan Fazli
- Department of Urologic Sciences, Vancouver Prostate Centre, and
| | | | - Sophie Stief
- Department of Urologic Sciences, Vancouver Prostate Centre, and
| | - Fuqiang Ban
- Department of Urologic Sciences, Vancouver Prostate Centre, and
| | - Nham T. Nguyen
- Department of Biochemistry and Molecular Biology, Life Sciences Centre, University of British Columbia, Vancouver, British Columbia, Canada
| | - Neetu Saxena
- Department of Urologic Sciences, Vancouver Prostate Centre, and
| | - Evgenia Dueva
- Department of Urologic Sciences, Vancouver Prostate Centre, and
| | - Fan Zhang
- Department of Urologic Sciences, Vancouver Prostate Centre, and
| | | | - Amina Zoubeidi
- Department of Urologic Sciences, Vancouver Prostate Centre, and
| | - Artem Cherkasov
- Department of Urologic Sciences, Vancouver Prostate Centre, and
| | - Gary D. Brayer
- Department of Biochemistry and Molecular Biology, Life Sciences Centre, University of British Columbia, Vancouver, British Columbia, Canada
| | - Martin Gleave
- Department of Urologic Sciences, Vancouver Prostate Centre, and
| |
Collapse
|
18
|
Chiu MH, Shi C, Rosin M, Batulan Z, O'Brien ER. Biophysical analyses and functional implications of the interaction between Heat Shock Protein 27 and antibodies to HSP27. Biochim Biophys Acta Gen Subj 2019; 1863:1536-1546. [PMID: 31136785 DOI: 10.1016/j.bbagen.2019.05.016] [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: 09/03/2018] [Revised: 03/28/2019] [Accepted: 05/23/2019] [Indexed: 10/26/2022]
Abstract
Heat Shock Protein 27 (HSP27) is a small molecular chaperone that reduces the development of atherosclerosis by lowering plasma cholesterol levels as well as inflammation. Human studies show an inverse correlation between atherosclerotic burden and HSP27 expression, and are supported by murine models in which augmenting HSP27 levels curbs experimental atherogenesis. Natural HSP27 auto-antibodies (AAb) are found in human plasma, however their role in modulating the athero-protective effects of HSP27 is unknown. The purpose of this study is to characterize the biophysical interaction between human recombinant HSP27 and AAb. A validated polyclonal anti-HSP27 IgG antibody (PAb) was used to mimic natural AAb. Homology modeling and secondary structure prediction tools facilitated the design of HSP27 truncation and phosphorylation mutants. Secondary structural changes were identified using Circular Dichroism (CD) and Dynamic Light Scattering (DLS). Similar to prior structural investigations of HSP27, there was a predominance of α-helical content in the N-terminal truncation and dephosphorylation ("AA") mutants. The α-crystallin domain (ACD) predominantly consists of β-strands, with the addition of the N-terminal increasing helical content and the C-terminal maintaining β structure. With increasing ratios of PAb to HSP27 β structure abundance and particle size increased, with a similar trend observed with the N-terminus, C-terminus and ACD peptides but an opposite trend with the phosphorylation peptides. Taken together, these studies provide insights into the interaction of HSP27 and its AAb that ultimately may aid in optimizing the design of HSP27 peptidomimetics with anti-atherogenic potential.
Collapse
Affiliation(s)
- Michael H Chiu
- Department of Cardiac Sciences, Libin Cardiovascular Institute of Alberta, Cumming School of Medicine, University of Calgary, Calgary, Alberta T2N 1N4, Canada
| | - Chunhua Shi
- Department of Cardiac Sciences, Libin Cardiovascular Institute of Alberta, Cumming School of Medicine, University of Calgary, Calgary, Alberta T2N 1N4, Canada
| | - Matthew Rosin
- Department of Cardiac Sciences, Libin Cardiovascular Institute of Alberta, Cumming School of Medicine, University of Calgary, Calgary, Alberta T2N 1N4, Canada
| | - Zarah Batulan
- Department of Cardiac Sciences, Libin Cardiovascular Institute of Alberta, Cumming School of Medicine, University of Calgary, Calgary, Alberta T2N 1N4, Canada
| | - Edward R O'Brien
- Department of Cardiac Sciences, Libin Cardiovascular Institute of Alberta, Cumming School of Medicine, University of Calgary, Calgary, Alberta T2N 1N4, Canada.
| |
Collapse
|
19
|
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.
Collapse
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
| | | |
Collapse
|
20
|
Ghosh S, Salama F, Dines M, Lahav A, Adir N. Biophysical and structural characterization of the small heat shock protein HspA from Thermosynechococcus vulcanus in 2 M urea. BIOCHIMICA ET BIOPHYSICA ACTA-PROTEINS AND PROTEOMICS 2019; 1867:442-452. [PMID: 30711645 DOI: 10.1016/j.bbapap.2018.12.011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/26/2018] [Revised: 11/29/2018] [Accepted: 12/11/2018] [Indexed: 10/27/2022]
Abstract
Small heat shock proteins (sHSPs) belong to the superfamily of molecular chaperones. They prevent aggregation of partially unfolded or misfolded client proteins, providing protection to organisms under stress conditions. Here, we report the biophysical and structural characterization of a small heat shock protein (HspA) from a thermophilic cyanobacterium Thermosynechococcus vulcanus in the presence of 2 M urea. HspA has been shown to be important for the protection of Photosystem II and the Phycobilisome antenna complex at elevated temperatures. Heterologously expressed HspA requires the presence of 1-2 M urea to maintain its solubility at concentrations required for most characterization methods. Spectroscopic studies reveal the presence of the β-sheet structure and intactness of the tertiary fold in HspA. In vitro assays show that the HspA maintains chaperone-like activity in protecting soluble proteins from thermal aggregation. Chromatography and electron microscopy show that the HspA exists as a mixture of oligomeric forms in the presence of 2 M urea. HspA was successfully crystallized only in the presence of 2 M urea. The crystal structure of HspA shows urea-induced loss of about 30% of the secondary structure without major alteration in the tertiary structure of the protein. The electron density maps reveal changes in the hydrogen bonding network which we attribute to the presence of urea. The crystal structure of HspA demonstrates a mixture of both direct interactions between urea and protein functionalities and interactions between urea and the surrounding solvent that indirectly affect the protein, which are in accordance with previously published studies.
Collapse
Affiliation(s)
- Sudeshna Ghosh
- Schulich Faculty of Chemistry, Technion - Israel Institute of Technology, Technion City, Haifa 32000, Israel
| | - Faris Salama
- Schulich Faculty of Chemistry, Technion - Israel Institute of Technology, Technion City, Haifa 32000, Israel
| | - Monica Dines
- Schulich Faculty of Chemistry, Technion - Israel Institute of Technology, Technion City, Haifa 32000, Israel
| | - Avital Lahav
- Schulich Faculty of Chemistry, Technion - Israel Institute of Technology, Technion City, Haifa 32000, Israel
| | - Noam Adir
- Schulich Faculty of Chemistry, Technion - Israel Institute of Technology, Technion City, Haifa 32000, Israel.
| |
Collapse
|
21
|
Sato SB, Sugiura M, Kurihara T. Dimer-monomer equilibrium of human HSP27 is influenced by the in-cell macromolecular crowding environment and is controlled by fatty acids and heat. BIOCHIMICA ET BIOPHYSICA ACTA-PROTEINS AND PROTEOMICS 2018; 1866:692-701. [PMID: 29635040 DOI: 10.1016/j.bbapap.2018.04.003] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/06/2017] [Revised: 04/04/2018] [Accepted: 04/05/2018] [Indexed: 12/23/2022]
Abstract
Small heat shock protein 27 (HSP27) is an essential element of the proteostasis network in human cells. The HSP27 monomer coexists with the dimer, which can bind unfolded client proteins. Here, we evaluated the in-cell dimer-monomer equilibrium and its relevance to the binding of client proteins in a normal human vascular endothelial cell line. When cells were treated with a membrane-permeable crosslinker, the protein existed primarily as a free monomer (27 kDa) with a markedly smaller percentage of dimer (54 kDa), hetero-conjugates, and minor smear-like bands. When the protein was crosslinked in a cell-free lysate, two of the hetero-conjugates that were crosslinked in live cells were also detected, but the dimer and other complexes were absent. However, when cells were pretreated with fatty acid (FA) and/or heat (42.5 °C), dissociation of the dimer was selectively prevented and two types of covalently linked dimers were increased. These changes occurred most prominently in cells treated with docosahexaenoic acid (DHA) and heat, which appeared to intensify the heat resistance of the cell. Both the formation of covalently linked dimers and heat resistance were prevented by N-acetylcysteine. By contrast, nearly all of the free monomers in the lysate converted to disulfide bond-linked dimers by a simple, long incubation at 4 °C. These results strongly suggest that the monomer-dimer equilibrium of HSP27 was inversed between the in-cell and cell-free systems. Temperature- and amphiphile-regulated dimerization was restricted probably due to the low hydration of the in-cell crowding environment.
Collapse
Affiliation(s)
- Satoshi B Sato
- Department of Biophysics, Division of Biological Science, Graduate School of Science, Kyoto University, Kyoto 606-8502, Japan.
| | - Miwa Sugiura
- Institute for Chemical Research, Kyoto University, Uji, Kyoto 611-0011, Japan
| | - Tatsuo Kurihara
- Institute for Chemical Research, Kyoto University, Uji, Kyoto 611-0011, Japan
| |
Collapse
|
22
|
Baughman HER, Clouser AF, Klevit RE, Nath A. HspB1 and Hsc70 chaperones engage distinct tau species and have different inhibitory effects on amyloid formation. J Biol Chem 2018; 293:2687-2700. [PMID: 29298892 DOI: 10.1074/jbc.m117.803411] [Citation(s) in RCA: 64] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2017] [Revised: 12/15/2017] [Indexed: 11/06/2022] Open
Abstract
The microtubule-associated protein tau forms insoluble, amyloid-type aggregates in various dementias, most notably Alzheimer's disease. Cellular chaperone proteins play important roles in maintaining protein solubility and preventing aggregation in the crowded cellular environment. Although tau is known to interact with numerous chaperones, it remains unclear how these chaperones function mechanistically to prevent tau aggregation and how chaperones from different classes compare in terms of mechanism. Here, we focused on the small heat shock protein HspB1 (also known as Hsp27) and the constitutive chaperone Hsc70 (also known as HspA8) and report how each chaperone interacts with tau to prevent its fibril formation. Using fluorescence and NMR spectroscopy, we show that the two chaperones inhibit tau fibril formation by distinct mechanisms. HspB1 delayed tau fibril formation by weakly interacting with early species in the aggregation process, whereas Hsc70 was highly efficient at preventing tau fibril elongation, possibly by capping the ends of tau fibrils. Both chaperones recognized aggregation-prone motifs within the microtubule-binding repeat region of tau. However, HspB1 binding remained transient in both aggregation-promoting and non-aggregating conditions, whereas Hsc70 binding was significantly tighter under aggregation-promoting conditions. These differences highlight the fact that chaperones from different families play distinct but complementary roles in the prevention of pathological protein aggregation.
Collapse
Affiliation(s)
- Hannah E R Baughman
- Department of Medicinal Chemistry, University of Washington, Seattle, Washington 98195-7610
| | - Amanda F Clouser
- Department of Biochemistry, University of Washington, Seattle, Washington 98195-7350
| | - Rachel E Klevit
- Department of Biochemistry, University of Washington, Seattle, Washington 98195-7350.
| | - Abhinav Nath
- Department of Medicinal Chemistry, University of Washington, Seattle, Washington 98195-7610.
| |
Collapse
|
23
|
Luz CCF, Noguti J, Borges de Araújo L, Gianni MSDS, Simão Gomes T, Ricardo AN. Hsp27 and Hsp70 Expression in Esophageal Squamous. Asian Pac J Cancer Prev 2017; 18:789-794. [PMID: 28441788 PMCID: PMC5464501 DOI: 10.22034/apjcp.2017.18.3.789] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022] Open
Abstract
Twenty-eight specimens of Esophael squamous cell carcinoma (ESCC) were obtained by surgery procedures.The tissues were fixed in formalin and embedded in paraffin. In each case, all available hematoxylin and eosin stained sections were examined and a representative block was selected. The ages of these patients ranged from 40 to 93 years, with a mean age of 60 years. Results. The histological grade of tumors was 4 well-differentiated, 19 moderately differentiated and 5 poorly differentiated. Expression of Hsp27 and Hsp70 in ESCC was demonstrated in 23 (82,14%) and 26 (92,86%) cases, respectively. Adjacent normal mucosa was positive in 11 (39,29%) samples and 9 (32,15%) samples for Hsp27 and Hsp70, respectively. No relationship between the expression of Hsp27 and Hsp70 with the clinicopathological parameters, including gender, age, surgical margin, lymph node status and tumor differentiation. The median follow-up period was 60 months. Survival analysis of patients with ESCC showed no relationship with the expression of Hsp27 and Hsp70. Conclusion. Taken together, our results demonstrate that Hsp27 and Hsp70 are expressed in ESCC tissues, but they are not good prognostic factor for patients with ESCC.
Collapse
Affiliation(s)
- Caio Cesar Floriano Luz
- Departments of Pathology, 2Statistics, Federal University of São Paulo, UNIFESP, SP, Brazil.
| | | | | | | | | | | |
Collapse
|
24
|
Tikhomirova TS, Selivanova OM, Galzitskaya OV. α-Crystallins are small heat shock proteins: Functional and structural properties. BIOCHEMISTRY (MOSCOW) 2017; 82:106-121. [DOI: 10.1134/s0006297917020031] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 08/30/2023]
|
25
|
Panda AK, Chakraborty A, Nandi SK, Kaushik A, Biswas A. The C‐terminal extension of
Mycobacterium tuberculosis
Hsp16.3 regulates its oligomerization, subunit exchange dynamics and chaperone function. FEBS J 2017; 284:277-300. [DOI: 10.1111/febs.13975] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2016] [Revised: 11/01/2016] [Accepted: 11/22/2016] [Indexed: 01/04/2023]
Affiliation(s)
- Alok Kumar Panda
- School of Basic Sciences Indian Institute of Technology Bhubaneswar India
| | - Ayon Chakraborty
- School of Basic Sciences Indian Institute of Technology Bhubaneswar India
| | - Sandip Kumar Nandi
- School of Basic Sciences Indian Institute of Technology Bhubaneswar India
| | - Abhishek Kaushik
- G. N. Ramachandran Protein Center Council of Scientific and Industrial Research Institute of Microbial Technology Chandigarh India
| | - Ashis Biswas
- School of Basic Sciences Indian Institute of Technology Bhubaneswar India
| |
Collapse
|
26
|
Sluchanko NN, Gusev NB. Moonlighting chaperone‐like activity of the universal regulatory 14‐3‐3 proteins. FEBS J 2017; 284:1279-1295. [DOI: 10.1111/febs.13986] [Citation(s) in RCA: 68] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2016] [Revised: 11/20/2016] [Accepted: 12/06/2016] [Indexed: 12/25/2022]
Affiliation(s)
- Nikolai N. Sluchanko
- Laboratory of Structural Biochemistry of Proteins A. N. Bach Institute of Biochemistry Federal Research Center of Biotechnology of the Russian Academy of Sciences Moscow Russia
| | - Nikolai B. Gusev
- Department of Biochemistry School of Biology Moscow State University Russia
| |
Collapse
|
27
|
Capponi S, Geuens T, Geroldi A, Origone P, Verdiani S, Cichero E, Adriaenssens E, De Winter V, Bandettini di Poggio M, Barberis M, Chiò A, Fossa P, Mandich P, Bellone E, Timmerman V. Molecular Chaperones in the Pathogenesis of Amyotrophic Lateral Sclerosis: The Role of HSPB1. Hum Mutat 2016; 37:1202-1208. [PMID: 27492805 PMCID: PMC5108433 DOI: 10.1002/humu.23062] [Citation(s) in RCA: 35] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2016] [Revised: 07/21/2016] [Accepted: 07/22/2016] [Indexed: 11/16/2022]
Abstract
Genetic discoveries in amyotrophic lateral sclerosis (ALS) have a significant impact on deciphering molecular mechanisms of motor neuron degeneration but, despite recent advances, the etiology of most sporadic cases remains elusive. Several cellular mechanisms contribute to the motor neuron degeneration in ALS, including RNA metabolism, cellular interactions between neurons and nonneuronal cells, and seeding of misfolded protein with prion‐like propagation. In this scenario, the importance of protein turnover and degradation in motor neuron homeostasis gained increased recognition. In this study, we evaluated the role of the candidate gene HSPB1, a molecular chaperone involved in several proteome‐maintenance functions. In a cohort of 247 unrelated Italian ALS patients, we identified two variants (c.570G>C, p.Gln190His and c.610dupG, p.Ala204Glyfs*6). Functional characterization of the p.Ala204Glyfs*6 demonstrated that the mutant protein alters HSPB1 dynamic equilibrium, sequestering the wild‐type protein in a stable dimer and resulting in a loss of chaperone‐like activity. Our results underline the relevance of identifying rare but pathogenic variations in sporadic neurodegenerative diseases, suggesting a possible correlation between specific pathomechanisms linked to HSPB1 mutations and the associated neurological phenotype. Our study provides additional lines of evidence to support the involvement of HSPB1 in the pathogenesis of sporadic ALS.
Collapse
Affiliation(s)
- Simona Capponi
- Department of Neuroscience, Rehabilitation, Ophthalmology, Genetics and Maternal and Child Health, Section of Medical Genetics, University of Genoa, Genoa, Italy.,VIB Department of Molecular Genetics, Peripheral Neuropathy Group, Born Bunge Foundation, University of Antwerp, Antwerp, Belgium
| | - Thomas Geuens
- VIB Department of Molecular Genetics, Peripheral Neuropathy Group, Born Bunge Foundation, University of Antwerp, Antwerp, Belgium
| | - Alessandro Geroldi
- Department of Neuroscience, Rehabilitation, Ophthalmology, Genetics and Maternal and Child Health, Section of Medical Genetics, University of Genoa, Genoa, Italy
| | - Paola Origone
- Department of Neuroscience, Rehabilitation, Ophthalmology, Genetics and Maternal and Child Health, Section of Medical Genetics, University of Genoa, Genoa, Italy.,COU Medical Genetics, IRCCS AOU San Martino IST-Istituto Nazionale per la Ricerca sul Cancro, Genoa, Italy
| | | | - Elena Cichero
- Section of Medicinal Chemistry, Department of Pharmacy, School of Medical and Pharmaceutical Sciences, University of Genoa, Genoa, Italy
| | - Elias Adriaenssens
- VIB Department of Molecular Genetics, Peripheral Neuropathy Group, Born Bunge Foundation, University of Antwerp, Antwerp, Belgium
| | - Vicky De Winter
- VIB Department of Molecular Genetics, Peripheral Neuropathy Group, Born Bunge Foundation, University of Antwerp, Antwerp, Belgium
| | - Monica Bandettini di Poggio
- Department of Neuroscience, Rehabilitation, Ophthalmology, Genetics, Maternal and Child Health, IRCCS AOU San Martino-IST Istituto Nazionale per la Ricerca sul Cancro, University of Genova, Genoa, Italy
| | - Marco Barberis
- Rita Levi Montalcini Department of Neuroscience, University of Turin, Turin, Italy.,Laboratory of Molecular Genetics, Azienda Ospedaliero Universitaria Città della Salute e della Scienza di Torino, Turin, Italy
| | - Adriano Chiò
- Rita Levi Montalcini Department of Neuroscience, University of Turin, Turin, Italy.,Azienda Ospedaliero Universitaria Città della Salute e della Scienza, Turin, Italy
| | - Paola Fossa
- Section of Medicinal Chemistry, Department of Pharmacy, School of Medical and Pharmaceutical Sciences, University of Genoa, Genoa, Italy
| | - Paola Mandich
- Department of Neuroscience, Rehabilitation, Ophthalmology, Genetics and Maternal and Child Health, Section of Medical Genetics, University of Genoa, Genoa, Italy.,COU Medical Genetics, IRCCS AOU San Martino IST-Istituto Nazionale per la Ricerca sul Cancro, Genoa, Italy
| | - Emilia Bellone
- Department of Neuroscience, Rehabilitation, Ophthalmology, Genetics and Maternal and Child Health, Section of Medical Genetics, University of Genoa, Genoa, Italy.,COU Medical Genetics, IRCCS AOU San Martino IST-Istituto Nazionale per la Ricerca sul Cancro, Genoa, Italy
| | - Vincent Timmerman
- VIB Department of Molecular Genetics, Peripheral Neuropathy Group, Born Bunge Foundation, University of Antwerp, Antwerp, Belgium.
| |
Collapse
|
28
|
Datskevich PN, Muranova LK, Gusev NB. Attempt to optimize some properties of fluorescent chimeras of human small heat shock protein HspB1 by modifying linker length and nature. BIOCHEMISTRY (MOSCOW) 2015; 80:67-73. [PMID: 25754041 DOI: 10.1134/s0006297915010083] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Chimerical proteins consisting of enhanced yellow fluorescent protein (EYFP) connected by linkers of different length and nature to the N-terminal end of small heat shock protein HspB1 were obtained and characterized. To obtain fluorescent chimeras with properties similar to those of unmodified small heat shock protein, we used either 12-residue-long linkers of different nature (highly flexible Gly-Ser linker (L1), rigid α-helical linker (L2), or rigid Pro-Ala linker (L3)) or highly flexible Gly-Ser linker consisting of 12, 18, or 21 residues. The wild-type HspB1 formed large stable oligomers consisting of more than 20 subunits. Independent of the length or the nature of the linker, all the fluorescent chimeras formed small (5-9 subunits) oligomers tending to dissociate at low protein concentration. Chaperone-like activity of the wild-type HspB1 and its fluorescent chimeras were compared using lysozyme as a model protein substrate. Under the conditions used, all the fluorescent chimeras possessed higher chaperone-like activity than the wild-type HspB1. Chaperone-like activity of fluorescent chimeras with L1 and L3 linkers was less different from that of the wild-type HspB1 compare to the chaperone-like activity of chimeras with rigid L2 linker. Increase in the length of L1 linker from 12 up to 21 residues leads to decrease in the difference in the chaperone-like activity between the wild-type protein and its fluorescent chimeras. Since the N-terminal domain of small heat shock proteins participates in formation of large oligomers, any way of attachment of fluorescent protein to the N-terminal end of HspB1 leads to dramatic changes in its oligomeric structure. Long flexible linkers should be used to obtain fluorescent chimeras with chaperone-like properties similar to those of the wild-type HspB1.
Collapse
Affiliation(s)
- P N Datskevich
- Lomonosov Moscow State University, Biological Faculty, Moscow, 119991, Russia.
| | | | | |
Collapse
|
29
|
A novel mechanism for small heat shock proteins to function as molecular chaperones. Sci Rep 2015; 5:8811. [PMID: 25744691 PMCID: PMC4351549 DOI: 10.1038/srep08811] [Citation(s) in RCA: 47] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2014] [Accepted: 02/04/2015] [Indexed: 11/08/2022] Open
Abstract
Small heat shock proteins (sHSPs) are molecular chaperones ubiquitously present in all forms of life, but their function mechanisms remain controversial. Here we show by cryo-electron microscopy and single particle 3D reconstruction that, at the low temperatures (4-25°C), CeHSP17 (a sHSP from Caenorhabditis elegans) exists as a 24-subunit spherical oligomer with tetrahedral symmetry. Our studies demonstrate that CeHSP17 forms large sheet-like super-molecular assemblies (SMAs) at the high temperatures (45-60°C), and such SMAs are apparently the form that exhibits chaperone-like activity. Our findings suggest a novel molecular mechanism for sHSPs to function as molecular chaperones.
Collapse
|
30
|
Everything but the ACD, Functional Conservation of the Non-conserved Terminal Regions in sHSPs. HEAT SHOCK PROTEINS 2015. [DOI: 10.1007/978-3-319-16077-1_8] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
|
31
|
Bakthisaran R, Tangirala R, Rao CM. Small heat shock proteins: Role in cellular functions and pathology. BIOCHIMICA ET BIOPHYSICA ACTA-PROTEINS AND PROTEOMICS 2014; 1854:291-319. [PMID: 25556000 DOI: 10.1016/j.bbapap.2014.12.019] [Citation(s) in RCA: 308] [Impact Index Per Article: 30.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/14/2014] [Revised: 12/16/2014] [Accepted: 12/18/2014] [Indexed: 01/18/2023]
Abstract
Small heat shock proteins (sHsps) are conserved across species and are important in stress tolerance. Many sHsps exhibit chaperone-like activity in preventing aggregation of target proteins, keeping them in a folding-competent state and refolding them by themselves or in concert with other ATP-dependent chaperones. Mutations in human sHsps result in myopathies, neuropathies and cataract. Their expression is modulated in diseases such as Alzheimer's, Parkinson's and cancer. Their ability to bind Cu2+, and suppress generation of reactive oxygen species (ROS) may have implications in Cu2+-homeostasis and neurodegenerative diseases. Circulating αB-crystallin and Hsp27 in the plasma may exhibit immunomodulatory and anti-inflammatory functions. αB-crystallin and Hsp20 exhitbit anti-platelet aggregation: these beneficial effects indicate their use as potential therapeutic agents. sHsps have roles in differentiation, proteasomal degradation, autophagy and development. sHsps exhibit a robust anti-apoptotic property, involving several stages of mitochondrial-mediated, extrinsic apoptotic as well as pro-survival pathways. Dynamic N- and C-termini and oligomeric assemblies of αB-crystallin and Hsp27 are important factors for their functions. We propose a "dynamic partitioning hypothesis" for the promiscuous interactions and pleotropic functions exhibited by sHsps. Stress tolerance and anti-apoptotic properties of sHsps have both beneficial and deleterious consequences in human health and diseases. Conditional and targeted modulation of their expression and/or activity could be used as strategies in treating several human disorders. The review attempts to provide a critical overview of sHsps and their divergent roles in cellular processes particularly in the context of human health and disease.
Collapse
Affiliation(s)
- Raman Bakthisaran
- CSIR-Centre for Cellular and Molecular Biology, Uppal Road, Hyderabad 500 007, India
| | - Ramakrishna Tangirala
- CSIR-Centre for Cellular and Molecular Biology, Uppal Road, Hyderabad 500 007, India
| | - Ch Mohan Rao
- CSIR-Centre for Cellular and Molecular Biology, Uppal Road, Hyderabad 500 007, India.
| |
Collapse
|
32
|
Chalova AS, Sudnitsyna MV, Semenyuk PI, Orlov VN, Gusev NB. Effect of disulfide crosslinking on thermal transitions and chaperone-like activity of human small heat shock protein HspB1. Cell Stress Chaperones 2014; 19:963-72. [PMID: 24898092 PMCID: PMC4389837 DOI: 10.1007/s12192-014-0520-9] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2014] [Revised: 05/20/2014] [Accepted: 05/22/2014] [Indexed: 10/25/2022] Open
Abstract
Temperature-induced conformational changes of reduced and oxidized HspB1 crosslinked by disulfide bond between single Cys137 of neighboring monomers were analyzed by means of different techniques. Heating of reduced HspB1 was accompanied by irreversible changes of Trp fluorescence, whereas oxidized HspB1 underwent completely reversible changes of fluorescence. Increase of the temperature in the range of 20-70 °C was accompanied by self-association of both reduced and oxidized protein. Further increase of the temperature led to formation of heterogeneous mixture of large self-associated complexes of reduced HspB1 and to formation of smaller and less heterogeneous complexes of oxidized HspB1. Heat-induced changes of oligomeric state of reduced HspB1 were only partially reversible, whereas the corresponding changes of oligomeric state of oxidized HspB1 were almost completely reversible. Oxidation resulted in decrease of chaperone-like activity of HspB1. It is concluded that oxidative stress, inducing formation of disulfide bond, can affect stability and conformational mobility of human HspB1.
Collapse
Affiliation(s)
- Anna S. Chalova
- />Department of Biochemistry, School of Biology, Moscow State University, Moscow, 119991 Russian Federation
| | - Maria V. Sudnitsyna
- />Department of Biochemistry, School of Biology, Moscow State University, Moscow, 119991 Russian Federation
| | - Pavel I. Semenyuk
- />Division of Physical Methods of Investigation, A.N. Belozersky Institute of Physico-chemical biology, Moscow State University, Moscow, 119991 Russian Federation
| | - Victor N. Orlov
- />Division of Physical Methods of Investigation, A.N. Belozersky Institute of Physico-chemical biology, Moscow State University, Moscow, 119991 Russian Federation
| | - Nikolai B. Gusev
- />Department of Biochemistry, School of Biology, Moscow State University, Moscow, 119991 Russian Federation
| |
Collapse
|
33
|
Heirbaut M, Beelen S, Strelkov SV, Weeks SD. Dissecting the functional role of the N-terminal domain of the human small heat shock protein HSPB6. PLoS One 2014; 9:e105892. [PMID: 25157403 PMCID: PMC4144951 DOI: 10.1371/journal.pone.0105892] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2014] [Accepted: 07/25/2014] [Indexed: 01/24/2023] Open
Abstract
HSPB6 is a member of the human small heat shock protein (sHSP) family, a conserved group of molecular chaperones that bind partially unfolded proteins and prevent them from aggregating. In vertebrate sHSPs the poorly structured N-terminal domain has been implicated in both chaperone activity and the formation of higher-order oligomers. These two functionally important properties are likely intertwined at the sequence level, complicating attempts to delineate the regions that define them. Differing from the prototypical α-crystallins human HSPB6 has been shown to only form dimers in solution making it more amendable to explore the determinants of chaperoning activity alone. Using a systematic and iterative deletion strategy, we have extensively investigated the role of the N-terminal domain on the chaperone activity of this sHSP. As determined by size-exclusion chromatography and small-angle X-ray scattering, most mutants had a dimeric structure closely resembling that of wild-type HSPB6. The chaperone-like activity was tested using three different substrates, whereby no single truncation, except for complete removal of the N-terminal domain, showed full loss of activity, pointing to the presence of multiple sites for binding unfolding proteins. Intriguingly, we found that the stretch encompassing residues 31 to 35, which is nearly fully conserved across vertebrate sHSPs, acts as a negative regulator of activity, as its deletion greatly enhanced chaperoning capability. Further single point mutational analysis revealed an interplay between the highly conserved residues Q31 and F33 in fine-tuning its function.
Collapse
Affiliation(s)
- Michelle Heirbaut
- Laboratory for Biocrystallography, Department of Pharmaceutical and Pharmacological Sciences, KU Leuven, Belgium
| | - Steven Beelen
- Laboratory for Biocrystallography, Department of Pharmaceutical and Pharmacological Sciences, KU Leuven, Belgium
| | - Sergei V. Strelkov
- Laboratory for Biocrystallography, Department of Pharmaceutical and Pharmacological Sciences, KU Leuven, Belgium
- * E-mail: (SVS); (SDW)
| | - Stephen D. Weeks
- Laboratory for Biocrystallography, Department of Pharmaceutical and Pharmacological Sciences, KU Leuven, Belgium
- * E-mail: (SVS); (SDW)
| |
Collapse
|
34
|
Benndorf R, Martin JL, Kosakovsky Pond SL, Wertheim JO. Neuropathy- and myopathy-associated mutations in human small heat shock proteins: Characteristics and evolutionary history of the mutation sites. MUTATION RESEARCH. REVIEWS IN MUTATION RESEARCH 2014; 761:15-30. [PMID: 24607769 PMCID: PMC4157968 DOI: 10.1016/j.mrrev.2014.02.004] [Citation(s) in RCA: 47] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/21/2013] [Revised: 02/07/2014] [Accepted: 02/26/2014] [Indexed: 11/24/2022]
Abstract
Mutations in four of the ten human small heat shock proteins (sHSP) are associated with various forms of motor neuropathies and myopathies. In HspB1, HspB3, and HspB8 all known mutations cause motor neuropathies, whereas in HspB5 they cause myopathies. Several features are common to the majority of these mutations: (i) they are missense mutations, (ii) most associated disease phenotypes exhibit a dominant inheritance pattern and late disease onset, (iii) in the primary protein sequences, the sites of most mutations are located in the conserved α-crystallin domain and the variable C-terminal extensions, and (iv) most human mutation sites are highly conserved among the vertebrate orthologs and have been historically exposed to significant purifying selection. In contrast, a minor fraction of these mutations deviate from these rules: they are (i) frame shifting, nonsense, or elongation mutations, (ii) associated with recessive or early onset disease phenotypes, (iii) positioned in the N-terminal domain of the proteins, and (iv) less conserved among the vertebrates and were historically not subject to a strong selective pressure. In several vertebrate sHSPs (including primate sHSPs), homologous sites differ from the human sequence and occasionally even encode the same amino acid residues that cause the disease in humans. Apparently, a number of these mutations sites are not crucial for the protein function in single species or entire taxa, and single species even seem to have adopted mechanisms that compensate for potentially adverse effects of 'mutant-like' sHSPs. The disease-associated dominant sHSP missense mutations have a number of cellular consequences that are consistent with gain-of-function mechanisms of genetic dominance: dominant-negative effects, the formation of cytotoxic amyloid protein oligomers and precipitates, disruption of cytoskeletal networks, and increased downstream enzymatic activities. Future therapeutic concepts should aim for reducing these adverse effects of mutant sHSPs in patients. Indeed, initial experimental results are encouraging.
Collapse
Affiliation(s)
- Rainer Benndorf
- Center for Clinical and Translational Research, The Research Institute at Nationwide Children's Hospital, Columbus, OH, USA; Department of Pediatrics, The Ohio State University, Columbus, OH, USA.
| | - Jody L Martin
- Department of Cell and Molecular Physiology, Cardiovascular Institute, Loyola University Medical Center, Maywood, IL, USA.
| | | | - Joel O Wertheim
- Department of Medicine, University of California, San Diego, CA, USA; Department of Pathology, University of California, San Diego, CA, USA.
| |
Collapse
|
35
|
Weeks SD, Baranova EV, Heirbaut M, Beelen S, Shkumatov AV, Gusev NB, Strelkov SV. Molecular structure and dynamics of the dimeric human small heat shock protein HSPB6. J Struct Biol 2014; 185:342-54. [DOI: 10.1016/j.jsb.2013.12.009] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2013] [Revised: 11/11/2013] [Accepted: 12/23/2013] [Indexed: 10/25/2022]
|
36
|
Dubińska-Magiera M, Jabłońska J, Saczko J, Kulbacka J, Jagla T, Daczewska M. Contribution of small heat shock proteins to muscle development and function. FEBS Lett 2014; 588:517-30. [PMID: 24440355 DOI: 10.1016/j.febslet.2014.01.005] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2013] [Revised: 12/17/2013] [Accepted: 01/02/2014] [Indexed: 12/17/2022]
Abstract
Investigations undertaken over the past years have led scientists to introduce the concept of protein quality control (PQC) systems, which are responsible for polypeptide processing. The PQC system monitors proteostasis and involves activity of different chaperones such as small heat shock proteins (sHSPs). These proteins act during normal conditions as housekeeping proteins regulating cellular processes, and during stress conditions. They also mediate the removal of toxic misfolded polypeptides and thereby prevent development of pathogenic states. It is postulated that sHSPs are involved in muscle development. They could act via modulation of myogenesis or by maintenance of the structural integrity of signaling complexes. Moreover, mutations in genes coding for sHSPs lead to pathological states affecting muscular tissue functioning. This review focuses on the question how sHSPs, still relatively poorly understood proteins, contribute to the development and function of three types of muscle tissue: skeletal, cardiac and smooth.
Collapse
Affiliation(s)
- Magda Dubińska-Magiera
- Department of Animal Developmental Biology, University of Wroclaw, 21 Sienkiewicza Street, 50-335 Wroclaw, Poland
| | - Jadwiga Jabłońska
- Department of Animal Developmental Biology, University of Wroclaw, 21 Sienkiewicza Street, 50-335 Wroclaw, Poland
| | - Jolanta Saczko
- Department of Medical Biochemistry, Medical University, Chalubinskiego 10, 50-368 Wroclaw, Poland
| | - Julita Kulbacka
- Department of Medical Biochemistry, Medical University, Chalubinskiego 10, 50-368 Wroclaw, Poland
| | - Teresa Jagla
- Institut National de la Santé et de la Recherche Médicale U384, Faculté de Medecine, Clermont-Ferrand, France
| | - Małgorzata Daczewska
- Department of Animal Developmental Biology, University of Wroclaw, 21 Sienkiewicza Street, 50-335 Wroclaw, Poland.
| |
Collapse
|
37
|
Zhong B, Chennamaneni S, Lama R, Yi X, Geldenhuys WJ, Pink JJ, Dowlati A, Xu Y, Zhou A, Su B. Synthesis and anticancer mechanism investigation of dual Hsp27 and tubulin inhibitors. J Med Chem 2013; 56:5306-20. [PMID: 23767669 DOI: 10.1021/jm4004736] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
Heat shock protein 27 (Hsp27) is a chaperone protein, and its expression is increased in response to various stress stimuli including anticancer chemotherapy, which allows the cells to survive and causes drug resistance. We previously identified lead compounds that bound to Hsp27 and tubulin via proteomic approaches. Systematic ligand based optimization in the current study significantly increased the cell growth inhibition and apoptosis inducing activities of the compounds. Compared to the lead compounds, one of the new derivatives exhibited much better potency to inhibit tubulin polymerization but a decreased activity to inhibit Hsp27 chaperone function, suggesting that the structural modification dissected the dual targeting effects of the compound. The most potent compounds 20 and 22 exhibited strong cell proliferation inhibitory activities at subnanomolar concentration against 60 human cancer cell lines conducted by Developmental Therapeutic Program at the National Cancer Institute and represented promising candidates for anticancer drug development.
Collapse
Affiliation(s)
- Bo Zhong
- Department of Chemistry, College of Sciences and Health Professions, Cleveland State University , 2121 Euclid Avenue, Cleveland, Ohio 44115, United States
| | | | | | | | | | | | | | | | | | | |
Collapse
|
38
|
Cayado-Gutiérrez N, Moncalero VL, Rosales EM, Berón W, Salvatierra EE, Alvarez-Olmedo D, Radrizzani M, Ciocca DR. Downregulation of Hsp27 (HSPB1) in MCF-7 human breast cancer cells induces upregulation of PTEN. Cell Stress Chaperones 2013; 18:243-9. [PMID: 22907762 PMCID: PMC3581620 DOI: 10.1007/s12192-012-0367-x] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2012] [Revised: 08/03/2012] [Accepted: 08/06/2012] [Indexed: 12/14/2022] Open
Abstract
Hsp27 (HSPB1) is usually overexpressed in breast cancers affecting the disease outcome and the sensitivity of tumors to chemotherapy and radiotherapy. Hsp27 interacts with other proteins such as β-catenin, histone deacetylase HDAC6, transcription factor STAT2 and procaspase-3. Phosphatase and tensin homologue (PTEN) is a tumor suppressor gene that is deleted in many human tumors. The PI3K/Akt signaling pathway is negatively regulated by PTEN. Hsp27 is described as a key component of the Akt signaling cascade: Akt, BAD, Forkhead transcription factors, Hsp27, mitogen-activated protein kinase kinase-3 and -6. Here, we have examined whether the downregulation of Hsp27 by siHsp27 affects the PTEN levels in the MCF-7 human breast cancer cell line. PTEN was detected with two different antibodies using western blots and immunocytochemistry. p-Akt was also evaluated by western blot. In addition, Hsp27 and PTEN were immunoprecipitated to know whether these proteins interact. Intracellular colocalization studies were carried out by confocal microscopy. A significant reduction in the Hsp27 levels was noted in the siHsp27 transfected cells. These Hsp27 downregulated cells showed a significant increased expression of PTEN. The MW 76 and 55 kDa PTEN forms were upregulated as revealed by two different antibodies. The phosphatase activity of PTEN seems to be active because p-Akt levels were reduced. Hsp27 immunoprecipitation was bringing PTEN and vice versa, these two proteins seem to interact at cytoplasmic level by FRET. Downregulation of Hsp27 stabilized PTEN protein levels. Chaperone-assisted E3 ligase C terminus of Hsc70-interacting protein (CHIP) levels were not significantly influenced by Hsp27 downregulation. In conclusion, we report a novel function of Hsp27 modulating the PTEN levels in human breast cancer cells suggesting an interaction between these two molecules.
Collapse
Affiliation(s)
- Niubys Cayado-Gutiérrez
- />Laboratory of Oncology, IMBECU, CCT-CONICET, National Research Council, C.C. 855, Mendoza, Argentina
| | - Vera L. Moncalero
- />Laboratorio de Neuro y Citogenética Molecular, Centro de Estudios de Salud y Medio Ambiente, UN de San Martín, CONICET, Buenos Aires, Argentina
| | - Eliana M. Rosales
- />Instituto de Histología y Embriología, Facultad de Ciencias Médicas, UNCuyo, CONICET, Mendoza, Argentina
| | - Walter Berón
- />Instituto de Histología y Embriología, Facultad de Ciencias Médicas, UNCuyo, CONICET, Mendoza, Argentina
| | - Edgardo E. Salvatierra
- />Molecular and Cellular Therapy Laboratory, Instituto F. Leloir-IBBA-CONICET, Buenos Aires, Argentina
| | - Daiana Alvarez-Olmedo
- />Laboratory of Oncology, IMBECU, CCT-CONICET, National Research Council, C.C. 855, Mendoza, Argentina
| | - Martín Radrizzani
- />Laboratorio de Neuro y Citogenética Molecular, Centro de Estudios de Salud y Medio Ambiente, UN de San Martín, CONICET, Buenos Aires, Argentina
| | - Daniel R. Ciocca
- />Laboratory of Oncology, IMBECU, CCT-CONICET, National Research Council, C.C. 855, Mendoza, Argentina
| |
Collapse
|