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Wickramaratne AC, Wickner S, Kravats AN. Hsp90, a team player in protein quality control and the stress response in bacteria. Microbiol Mol Biol Rev 2024:e0017622. [PMID: 38534118 DOI: 10.1128/mmbr.00176-22] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/28/2024] Open
Abstract
SUMMARYHeat shock protein 90 (Hsp90) participates in proteostasis by facilitating protein folding, activation, disaggregation, prevention of aggregation, degradation, and protection against degradation of various cellular proteins. It is highly conserved from bacteria to humans. In bacteria, protein remodeling by Hsp90 involves collaboration with the Hsp70 molecular chaperone and Hsp70 cochaperones. In eukaryotes, protein folding by Hsp90 is more complex and involves collaboration with many Hsp90 cochaperones as well as Hsp70 and Hsp70 cochaperones. This review focuses primarily on bacterial Hsp90 and highlights similarities and differences between bacterial and eukaryotic Hsp90. Seminal research findings that elucidate the structure and the mechanisms of protein folding, disaggregation, and reactivation promoted by Hsp90 are discussed. Understanding the mechanisms of bacterial Hsp90 will provide fundamental insight into the more complex eukaryotic chaperone systems.
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Affiliation(s)
- Anushka C Wickramaratne
- Laboratory of Molecular Biology, National Cancer Institute, National Institutes of Health, Bethesda, Maryland, USA
| | - Sue Wickner
- Laboratory of Molecular Biology, National Cancer Institute, National Institutes of Health, Bethesda, Maryland, USA
| | - Andrea N Kravats
- Department of Chemistry and Biochemistry, Miami University, Oxford, Ohio, USA
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2
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Zhu Y, Dai Z. HSP90: A promising target for NSCLC treatments. Eur J Pharmacol 2024; 967:176387. [PMID: 38311278 DOI: 10.1016/j.ejphar.2024.176387] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2023] [Revised: 01/15/2024] [Accepted: 02/01/2024] [Indexed: 02/10/2024]
Abstract
The emergence of targeted therapies and immunotherapies has improved the overall survival of patients with nonsmall cell lung cancer (NSCLC), but the 5-year survival rate remains low. New drugs are needed to overcome this dilemma. Moreover, the significant correlation between various client proteins of heat-shock protein (HSP) 90 and tumor occurrence, progression, and drug resistance suggests that HSP90 is a potential therapeutic target for NSCLC. However, the outcomes of clinical trials for HSP90 inhibitors have been disappointing, indicating significant toxicity of these drugs and that further screening of the beneficiary population is required. NSCLC patients with oncogenic-driven gene mutations or those at advanced stages who are resistant to multi-line treatments may benefit from HSP90 inhibitors. Enhancing the therapeutic efficacy and reducing the toxicity of HSP90 inhibitors can be achieved via the optimization of their drug structure, using them in combination therapies with low-dose HSP90 inhibitors and other drugs, and via targeted administration to tumor lesions. Here, we provide a review of the recent research on the role of HSP90 in NSCLC and summarize relevant studies of HSP90 inhibitors in NSCLC.
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Affiliation(s)
- Yue Zhu
- Department of Oncology, The Second Affiliated Hospital of Dalian Medical University, Dalian, 116021, Liaoning Province, China
| | - Zhaoxia Dai
- Department of Oncology, The Second Affiliated Hospital of Dalian Medical University, Dalian, 116021, Liaoning Province, China.
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3
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Martin-Folgar R, González-Caballero MC, Torres-Ruiz M, Cañas-Portilla AI, de Alba González M, Liste I, Morales M. Molecular effects of polystyrene nanoplastics on human neural stem cells. PLoS One 2024; 19:e0295816. [PMID: 38170698 PMCID: PMC10763972 DOI: 10.1371/journal.pone.0295816] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2023] [Accepted: 11/30/2023] [Indexed: 01/05/2024] Open
Abstract
Nanoplastics (NPs) have been found in many ecological environments (aquatic, terrestrial, air). Currently, there is great concern about the exposition and impact on animal health, including humans, because of the effects of ingestion and accumulation of these nanomaterials (NMs) in aquatic organisms and their incorporation into the food chain. NPs´ mechanisms of action on humans are currently unknown. In this study, we evaluated the altered molecular mechanisms on human neural stem cell line (hNS1) after 4 days of exposure to 30 nm polystyrene (PS) NPs (0.5, 2.5 and 10 μg/mL). Our results showed that NPs can induce oxidative stress, cellular stress, DNA damage, alterations in inflammatory response, and apoptosis, which could lead to tissue damage and neurodevelopmental diseases.
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Affiliation(s)
- Raquel Martin-Folgar
- Grupo de Biología y Toxicología Ambiental, Departamento de Física Matemática y de Fluidos, Facultad de Ciencias, UNED. Urbanización Monte Rozas, Las Rozas (Madrid), Spain
| | - Mª Carmen González-Caballero
- Environmental Toxicology Unit, Centro Nacional de Sanidad Ambiental (CNSA), Instituto de Salud Carlos III (ISCIII), Majadahonda (Madrid), Spain
| | - Mónica Torres-Ruiz
- Environmental Toxicology Unit, Centro Nacional de Sanidad Ambiental (CNSA), Instituto de Salud Carlos III (ISCIII), Majadahonda (Madrid), Spain
| | - Ana I. Cañas-Portilla
- Environmental Toxicology Unit, Centro Nacional de Sanidad Ambiental (CNSA), Instituto de Salud Carlos III (ISCIII), Majadahonda (Madrid), Spain
| | - Mercedes de Alba González
- Environmental Toxicology Unit, Centro Nacional de Sanidad Ambiental (CNSA), Instituto de Salud Carlos III (ISCIII), Majadahonda (Madrid), Spain
| | - Isabel Liste
- Environmental Toxicology Unit, Centro Nacional de Sanidad Ambiental (CNSA), Instituto de Salud Carlos III (ISCIII), Majadahonda (Madrid), Spain
| | - Mónica Morales
- Grupo de Biología y Toxicología Ambiental, Departamento de Física Matemática y de Fluidos, Facultad de Ciencias, UNED. Urbanización Monte Rozas, Las Rozas (Madrid), Spain
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4
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Gollapalli P, Rudrappa S, Kumar V, Santosh Kumar HS. Domain Architecture Based Methods for Comparative Functional Genomics Toward Therapeutic Drug Target Discovery. J Mol Evol 2023; 91:598-615. [PMID: 37626222 DOI: 10.1007/s00239-023-10129-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2022] [Accepted: 08/06/2023] [Indexed: 08/27/2023]
Abstract
Genes duplicate, mutate, recombine, fuse or fission to produce new genes, or when genes are formed from de novo, novel functions arise during evolution. Researchers have tried to quantify the causes of these molecular diversification processes to know how these genes increase molecular complexity over a period of time, for instance protein domain organization. In contrast to global sequence similarity, protein domain architectures can capture key structural and functional characteristics, making them better proxies for describing functional equivalence. In Prokaryotes and eukaryotes it has proven that, domain designs are retained over significant evolutionary distances. Protein domain architectures are now being utilized to categorize and distinguish evolutionarily related proteins and find homologs among species that are evolutionarily distant from one another. Additionally, structural information stored in domain structures has accelerated homology identification and sequence search methods. Tools for functional protein annotation have been developed to discover, protein domain content, domain order, domain recurrence, and domain position as all these contribute to the prediction of protein functional accuracy. In this review, an attempt is made to summarise facts and speculations regarding the use of protein domain architecture and modularity to identify possible therapeutic targets among cellular activities based on the understanding their linked biological processes.
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Affiliation(s)
- Pavan Gollapalli
- Center for Bioinformatics and Biostatistics, Nitte (Deemed to be University), Mangalore, Karnataka, 575018, India
| | - Sushmitha Rudrappa
- Department of Biotechnology and Bioinformatics, Jnana Sahyadri Campus, Kuvempu University, Shankaraghatta, Shivamogga, Karnataka, 577451, India
| | - Vadlapudi Kumar
- Department of Biochemistry, Davangere University, Shivagangothri, Davangere, Karnataka, 577007, India
| | - Hulikal Shivashankara Santosh Kumar
- Department of Biotechnology and Bioinformatics, Jnana Sahyadri Campus, Kuvempu University, Shankaraghatta, Shivamogga, Karnataka, 577451, India.
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5
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Marrugal Á, Ferrer I, Quintanal-Villalonga Á, Ojeda L, Pastor MD, García-Luján R, Carnero A, Paz-Ares L, Molina-Pinelo S. Inhibition of HSP90 in Driver Oncogene-Defined Lung Adenocarcinoma Cell Lines: Key Proteins Underpinning Therapeutic Efficacy. Int J Mol Sci 2023; 24:13830. [PMID: 37762133 PMCID: PMC10530904 DOI: 10.3390/ijms241813830] [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: 08/21/2023] [Revised: 09/04/2023] [Accepted: 09/06/2023] [Indexed: 09/29/2023] Open
Abstract
The use of 90 kDa heat shock protein (HSP90) inhibition as a therapy in lung adenocarcinoma remains limited due to moderate drug efficacy, the emergence of drug resistance, and early tumor recurrence. The main objective of this research is to maximize treatment efficacy in lung adenocarcinoma by identifying key proteins underlying HSP90 inhibition according to molecular background, and to search for potential biomarkers of response to this therapeutic strategy. Inhibition of the HSP90 chaperone was evaluated in different lung adenocarcinoma cell lines representing the most relevant molecular alterations (EGFR mutations, KRAS mutations, or EML4-ALK translocation) and wild-type genes found in each tumor subtype. The proteomic technique iTRAQ was used to identify proteomic profiles and determine which biological pathways are involved in the response to HSP90 inhibition in lung adenocarcinoma. We corroborated the greater efficacy of HSP90 inhibition in EGFR mutated or EML4-ALK translocated cell lines. We identified proteins specifically and significantly deregulated after HSP90 inhibition for each molecular alteration. Two proteins, ADI1 and RRP1, showed independently deregulated molecular patterns. Functional annotation of the altered proteins suggested that apoptosis was the only pathway affected by HSP90 inhibition across all molecular subgroups. The expression of ADI1 and RRP1 could be used to monitor the correct inhibition of HSP90 in lung adenocarcinoma. In addition, proteins such as ASS1, ITCH, or UBE2L3 involved in pathways related to the inhibition of a particular molecular background could be used as potential response biomarkers, thereby improving the efficacy of this therapeutic approach to combat lung adenocarcinoma.
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Affiliation(s)
- Ángela Marrugal
- H12O-CNIO Lung Cancer Clinical Research Unit, Instituto de Investigación Hospital 12 de Octubre & Centro Nacional de Investigaciones Oncológicas (CNIO), 28029 Madrid, Spain (L.P.-A.)
| | - Irene Ferrer
- H12O-CNIO Lung Cancer Clinical Research Unit, Instituto de Investigación Hospital 12 de Octubre & Centro Nacional de Investigaciones Oncológicas (CNIO), 28029 Madrid, Spain (L.P.-A.)
- CIBERONC, Instituto de Salud Carlos III, 28029 Madrid, Spain;
| | | | - Laura Ojeda
- H12O-CNIO Lung Cancer Clinical Research Unit, Instituto de Investigación Hospital 12 de Octubre & Centro Nacional de Investigaciones Oncológicas (CNIO), 28029 Madrid, Spain (L.P.-A.)
| | - María Dolores Pastor
- Instituto de Biomedicina de Sevilla (IBiS) (HUVR, CSIC, Universidad de Sevilla), 41013 Sevilla, Spain
| | - Ricardo García-Luján
- Respiratory Department, Hospital Universitario Doce de Octubre, 28041 Madrid, Spain
| | - Amancio Carnero
- CIBERONC, Instituto de Salud Carlos III, 28029 Madrid, Spain;
- Instituto de Biomedicina de Sevilla (IBiS) (HUVR, CSIC, Universidad de Sevilla), 41013 Sevilla, Spain
| | - Luis Paz-Ares
- H12O-CNIO Lung Cancer Clinical Research Unit, Instituto de Investigación Hospital 12 de Octubre & Centro Nacional de Investigaciones Oncológicas (CNIO), 28029 Madrid, Spain (L.P.-A.)
- CIBERONC, Instituto de Salud Carlos III, 28029 Madrid, Spain;
- Medical Oncology Department, Hospital Universitario Doce de Octubre, 28041 Madrid, Spain
- Medical School, Universidad Complutense, 28040 Madrid, Spain
| | - Sonia Molina-Pinelo
- CIBERONC, Instituto de Salud Carlos III, 28029 Madrid, Spain;
- Instituto de Biomedicina de Sevilla (IBiS) (HUVR, CSIC, Universidad de Sevilla), 41013 Sevilla, Spain
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6
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Mangano S, Muñoz A, Fernández-Calvino L, Castellano MM. HOP co-chaperones contribute to GA signaling by promoting the accumulation of the F-box protein SNE in Arabidopsis. PLANT COMMUNICATIONS 2023; 4:100517. [PMID: 36597357 PMCID: PMC10203442 DOI: 10.1016/j.xplc.2023.100517] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/04/2022] [Revised: 11/11/2022] [Accepted: 12/31/2022] [Indexed: 05/11/2023]
Abstract
Gibberellins (GAs) play important roles in multiple developmental processes and in plant response to the environment. Within the GA pathway, a central regulatory step relies on GA-dependent degradation of the DELLA transcriptional regulators. Nevertheless, the relevance of the stability of other key proteins in this pathway, such as SLY1 and SNE (the F-box proteins involved in DELLA degradation), remains unknown. Here, we take advantage of mutants in the HSP70-HSP90 organizing protein (HOP) co-chaperones and reveal that these proteins contribute to the accumulation of SNE in Arabidopsis. Indeed, HOP proteins, along with HSP90 and HSP70, interact in vivo with SNE, and SNE accumulation is significantly reduced in the hop mutants. Concomitantly, greater accumulation of the DELLA protein RGA is observed in these plants. In agreement with these molecular phenotypes, hop mutants show a hypersensitive response to the GA inhibitor paclobutrazol and display a partial response to the ectopic addition of GA when GA-regulated processes are assayed. These mutants also display different phenotypes associated with alterations in the GA pathway, such as reduced germination rate, delayed bolting, and reduced hypocotyl elongation in response to warm temperatures. Remarkably, ectopic overexpression of SNE reverts the delay in germination and the thermally dependent hypocotyl elongation defect of the hop1 hop2 hop3 mutant, revealing that SNE accumulation is the key aspect of the hop mutant phenotypes. Together, these data reveal a pivotal role for HOP in SNE accumulation and GA signaling.
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Affiliation(s)
- Silvina Mangano
- Centro de Biotecnología y Genómica de Plantas, Universidad Politécnica de Madrid (UPM) - Instituto Nacional de Investigación y Tecnología Agraria y Alimentaria (INIA/CSIC), Campus Montegancedo UPM, 28223 Pozuelo de Alarcón (Madrid), Spain; Fundación Instituto Leloir and Instituto de Investigaciones Bioquímicas de Buenos Aires (IIBA, CONICET), Av. Patricias Argentinas 435, Buenos Aires C1405BWE, Argentina
| | - Alfonso Muñoz
- Centro de Biotecnología y Genómica de Plantas, Universidad Politécnica de Madrid (UPM) - Instituto Nacional de Investigación y Tecnología Agraria y Alimentaria (INIA/CSIC), Campus Montegancedo UPM, 28223 Pozuelo de Alarcón (Madrid), Spain; Departamento de Botánica, Ecología y Fisiología Vegetal, Campus de Rabanales, Edificio Severo Ochoa, Universidad de Córdoba, 14071 Córdoba, Spain
| | - Lourdes Fernández-Calvino
- Centro de Biotecnología y Genómica de Plantas, Universidad Politécnica de Madrid (UPM) - Instituto Nacional de Investigación y Tecnología Agraria y Alimentaria (INIA/CSIC), Campus Montegancedo UPM, 28223 Pozuelo de Alarcón (Madrid), Spain
| | - M Mar Castellano
- Centro de Biotecnología y Genómica de Plantas, Universidad Politécnica de Madrid (UPM) - Instituto Nacional de Investigación y Tecnología Agraria y Alimentaria (INIA/CSIC), Campus Montegancedo UPM, 28223 Pozuelo de Alarcón (Madrid), Spain.
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7
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Rodriguez-Iturbe B, Johnson RJ, Sanchez-Lozada LG, Pons H. HSP70 and Primary Arterial Hypertension. Biomolecules 2023; 13:biom13020272. [PMID: 36830641 PMCID: PMC9953434 DOI: 10.3390/biom13020272] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2022] [Revised: 01/14/2023] [Accepted: 01/18/2023] [Indexed: 02/04/2023] Open
Abstract
Heat shock protein 70 (HSP70) production is a stress-generated cellular response with high interspecies homology. HSP70 has both chaperone and cytokine functions and may induce, depending on the context, tolerogenic anti-inflammatory reactivity or immunogenic and autoimmune reactivity. Intracellular (chaperoning transit of antigens to MHC in antigen-presenting cells) and extracellular HSP70-related effects are associated with hypertension, which is an inflammatory condition recognized as the most important risk factor for cardiovascular disease mortality. Here, we review (a) the relationship between HSP70, inflammation and immune reactivity, (b) clinical evidence relating to stress, HSP70 and anti-HSP70 reactivity with primary hypertension and (c) experimental data showing that salt-sensitive hypertension is associated with delayed hypersensitivity to HSP70. This is a consequence of anti-HSP70 reactivity in the kidneys and may be prevented and corrected by the T-cell-driven inhibition of kidney inflammation triggered by specific epitopes of HSP70. Finally, we discuss our postulate that lifelong stress signals and danger-associated molecular patterns stimulate HSP-70 and individual genetic and epigenetic characteristics determine whether the HSP70 response would drive inflammatory immune reactivity causing hypertension or, alternatively, would drive immunomodulatory responses that protect against hypertension.
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Affiliation(s)
- Bernardo Rodriguez-Iturbe
- Department of Nephrology, Instituto Nacional de Ciencias Médicas y Nutrición “Salvador Zubirán”, Mexico City 14080, Mexico
- Correspondence:
| | - Richard J. Johnson
- Division of Renal Diseases and Hypertension, University of Colorado Anschutz Medical Campus, Aurora, CO 80045, USA
| | - Laura Gabriela Sanchez-Lozada
- Department of Cardio-Renal Physiopathology, National Institute of Cardiology Ignacio Chávez, Mexico City 14080, Mexico
| | - Hector Pons
- Facultad de Medicina, Universidad del Zulia, Maracaibo 4011, Venezuela
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8
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Byrne DP, Shrestha S, Daly LA, Marensi V, Ramakrishnan K, Eyers CE, Kannan N, Eyers PA. Evolutionary and cellular analysis of the 'dark' pseudokinase PSKH2. Biochem J 2023; 480:141-160. [PMID: 36520605 PMCID: PMC9988210 DOI: 10.1042/bcj20220474] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2022] [Revised: 12/12/2022] [Accepted: 12/15/2022] [Indexed: 12/23/2022]
Abstract
Pseudokinases, so named because they lack one or more conserved canonical amino acids that define their catalytically active relatives, have evolved a variety of biological functions in both prokaryotic and eukaryotic organisms. Human PSKH2 is closely related to the canonical kinase PSKH1, which maps to the CAMK family of protein kinases. Primates encode PSKH2 in the form of a pseudokinase, which is predicted to be catalytically inactive due to loss of the invariant catalytic Asp residue. Although the biological role(s) of vertebrate PSKH2 proteins remains unclear, we previously identified species-level adaptions in PSKH2 that have led to the appearance of kinase or pseudokinase variants in vertebrate genomes alongside a canonical PSKH1 paralog. In this paper we confirm that, as predicted, PSKH2 lacks detectable protein phosphotransferase activity, and exploit structural informatics, biochemistry and cellular proteomics to begin to characterise vertebrate PSKH2 orthologues. AlphaFold 2-based structural analysis predicts functional roles for both the PSKH2 N- and C-regions that flank the pseudokinase domain core, and cellular truncation analysis confirms that the N-terminal domain, which contains a conserved myristoylation site, is required for both stable human PSKH2 expression and localisation to a membrane-rich subcellular fraction containing mitochondrial proteins. Using mass spectrometry-based proteomics, we confirm that human PSKH2 is part of a cellular mitochondrial protein network, and that its expression is regulated through client-status within the HSP90/Cdc37 molecular chaperone system. HSP90 interactions are mediated through binding to the PSKH2 C-terminal tail, leading us to predict that this region might act as both a cis and trans regulatory element, driving outputs linked to the PSKH2 pseudokinase domain that are important for functional signalling.
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Affiliation(s)
- Dominic P. Byrne
- Department of Biochemistry and Systems Biology, Institute of Systems, Molecular and Integrative Biology, University of Liverpool, Liverpool L69 7ZB, U.K
| | - Safal Shrestha
- Department of Biochemistry & Molecular Biology, University of Georgia, Athens, GA 30602, U.S.A
| | - Leonard A. Daly
- Centre for Proteome Research, Department of Biochemistry and Systems Biology, Institute of Systems, Molecular and Integrative Biology, University of Liverpool, Liverpool L69 7ZB, U.K
| | - Vanessa Marensi
- Department of Biochemistry and Systems Biology, Institute of Systems, Molecular and Integrative Biology, University of Liverpool, Liverpool L69 7ZB, U.K
| | - Krithika Ramakrishnan
- Department of Biochemistry and Systems Biology, Institute of Systems, Molecular and Integrative Biology, University of Liverpool, Liverpool L69 7ZB, U.K
| | - Claire E. Eyers
- Centre for Proteome Research, Department of Biochemistry and Systems Biology, Institute of Systems, Molecular and Integrative Biology, University of Liverpool, Liverpool L69 7ZB, U.K
| | - Natarajan Kannan
- Department of Biochemistry & Molecular Biology, University of Georgia, Athens, GA 30602, U.S.A
- Institute of Bioinformatics, University of Georgia, Athens, GA 30602, U.S.A
| | - Patrick A. Eyers
- Department of Biochemistry and Systems Biology, Institute of Systems, Molecular and Integrative Biology, University of Liverpool, Liverpool L69 7ZB, U.K
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Zhou L, Chu L, Du J, Nie Z, Cao L, Gao J, Xu G. Oxidative stress and immune response of hepatopancreas in Chinese mitten crab Eriocheir sinensis under lipopolysaccharide challenge. Comp Biochem Physiol C Toxicol Pharmacol 2023; 263:109495. [PMID: 36280105 DOI: 10.1016/j.cbpc.2022.109495] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/15/2022] [Revised: 10/11/2022] [Accepted: 10/19/2022] [Indexed: 11/24/2022]
Abstract
Chinese mitten crab (Eriocheir sinensis; H. Milne Edwards, 1853) is one of the important farmed crustaceans in China. Lipopolysaccharide (LPS), as a harmful factor, is prone to occur during the farming process of crabs. Aiming to test the hypothesis that damage degrees of the hepatopancreas in E. sinensis is correlated to LPS concentrations, in this study, E. sinensis were injected with LPS (50 μg/kg, and 500 μg/kg) and analyzed for the activity of antioxidant and immune-related enzymes, immune-related gene expression, and histopathological of hepatopancreas. As result, the hepatopancreas of E. sinensis immune-related genes, i.e., Dorsal, HSP90, Toll2, TLRs, Tube, and proPO, were significantly affected by LPS challenge. Among immune-related genes, Dorsal and proPO might play key roles in combating the LPS challenge. The activity of CAT gradually decreased with the increase of time, and the total antioxidant capacity was decreased after LPS challenge, indicating the inhibition of LPS on the antioxidant system. Interestingly, the decreasing trend of AKP and ACP activity suggested the immune system of crabs was affected by LPS challenge. The hepatopancreas section showed that the damage degree of hepatopancreas was different under the challenge of LPS with different concentrations, and the damage degree was proportional to the concentration. Our findings provide useful information for understanding the mechanism of hepatopancreas injury of E. sinensis induced by LPS infection.
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Affiliation(s)
- Lin Zhou
- College of Fisheries and Life Science, Shanghai Ocean University, Shanghai 201306, China
| | - Lanlu Chu
- Wuxi Biologics, 108 Meiliang Road, Mashan, Wuxi 214092, China
| | - Jinliang Du
- Key Laboratory of Integrated Rice-Fish Farming Ecology, Ministry of Agriculture and Rural Affairs, Freshwater Fisheries Research Center, Chinese Academy of Fishery Sciences, Wuxi 214081, China
| | - Zhijuan Nie
- Key Laboratory of Integrated Rice-Fish Farming Ecology, Ministry of Agriculture and Rural Affairs, Freshwater Fisheries Research Center, Chinese Academy of Fishery Sciences, Wuxi 214081, China
| | - Liping Cao
- Key Laboratory of Integrated Rice-Fish Farming Ecology, Ministry of Agriculture and Rural Affairs, Freshwater Fisheries Research Center, Chinese Academy of Fishery Sciences, Wuxi 214081, China
| | - Jiancao Gao
- Key Laboratory of Integrated Rice-Fish Farming Ecology, Ministry of Agriculture and Rural Affairs, Freshwater Fisheries Research Center, Chinese Academy of Fishery Sciences, Wuxi 214081, China
| | - Gangchun Xu
- College of Fisheries and Life Science, Shanghai Ocean University, Shanghai 201306, China; Key Laboratory of Integrated Rice-Fish Farming Ecology, Ministry of Agriculture and Rural Affairs, Freshwater Fisheries Research Center, Chinese Academy of Fishery Sciences, Wuxi 214081, China.
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10
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Kim H, Moon S, Ham S, Lee K, Römling U, Lee C. Cytoplasmic molecular chaperones in Pseudomonas species. J Microbiol 2022; 60:1049-1060. [PMID: 36318358 DOI: 10.1007/s12275-022-2425-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2022] [Revised: 10/20/2022] [Accepted: 10/20/2022] [Indexed: 06/16/2023]
Abstract
Pseudomonas is widespread in various environmental and host niches. To promote rejuvenation, cellular protein homeostasis must be finely tuned in response to diverse stresses, such as extremely high and low temperatures, oxidative stress, and desiccation, which can result in protein homeostasis imbalance. Molecular chaperones function as key components that aid protein folding and prevent protein denaturation. Pseudomonas, an ecologically important bacterial genus, includes human and plant pathogens as well as growth-promoting symbionts and species useful for bioremediation. In this review, we focus on protein quality control systems, particularly molecular chaperones, in ecologically diverse species of Pseudomonas, including the opportunistic human pathogen Pseudomonas aeruginosa, the plant pathogen Pseudomonas syringae, the soil species Pseudomonas putida, and the psychrophilic Pseudomonas antarctica.
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Affiliation(s)
- Hyunhee Kim
- Department of Biological Sciences, Ajou University, Suwon, 16499, Republic of Korea
| | - Seongjoon Moon
- Department of Biological Sciences, Ajou University, Suwon, 16499, Republic of Korea
| | - Soojeong Ham
- Department of Biological Sciences, Ajou University, Suwon, 16499, Republic of Korea
| | - Kihyun Lee
- CJ Bioscience, Seoul, 04527, Republic of Korea
| | - Ute Römling
- Department of Microbiology, Tumor and Cell Biology, Karolinska Institutet, Stockholm, 171 77, Sweden
| | - Changhan Lee
- Department of Biological Sciences, Ajou University, Suwon, 16499, Republic of Korea.
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Abstract
Heat-shock proteins (HSPs), or stress proteins, are abundant and highly conserved, present in all organisms and in all cells. Selected HSPs, also known as chaperones, play crucial roles in folding and unfolding of proteins, assembly of multiprotein complexes, transport and sorting of proteins into correct subcellular compartments, cell-cycle control and signaling, and protection of cells against stress and apoptosis. More recently, HSPs have been shown to be key players in immune responses: during antigen presentation as well as cross-priming, they chaperone and transfer antigenic peptides to class I and class II molecules of the major histocompatibility complexes. In addition, extracellular HSPs can stimulate and cause maturation of professional antigen-presenting cells of the immune system, such as macrophages and dendritic cells. They also chaperone several toll-like receptors, which play a central role in innate immune responses. HSPs constitute a large family of proteins that are often classified based on their molecular weight as Hsp10, Hsp40, Hsp60, Hsp70, Hsp90, etc. This unit contains a table that lists common HSPs and summarizes their characteristics including (a) name, (b) subcellular localization, (c) known function, (d) chromosome assignment, (e) brief comments, and (f) references. © 2022 Wiley Periodicals LLC.
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Affiliation(s)
- Adam T Hagymasi
- Department of Immunology and Carole and Ray Neag Comprehensive Cancer Center, University of Connecticut School of Medicine, Farmington, Connecticut
| | - Joseph P Dempsey
- Department of Immunology and Carole and Ray Neag Comprehensive Cancer Center, University of Connecticut School of Medicine, Farmington, Connecticut
| | - Pramod K Srivastava
- Department of Immunology and Carole and Ray Neag Comprehensive Cancer Center, University of Connecticut School of Medicine, Farmington, Connecticut
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12
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Picone P, Sanfilippo T, Vasto S, Baldassano S, Guggino R, Nuzzo D, Bulone D, San Biagio PL, Muscolino E, Monastero R, Dispenza C, Giacomazza D. From Small Peptides to Large Proteins against Alzheimer’sDisease. Biomolecules 2022; 12:biom12101344. [PMID: 36291553 PMCID: PMC9599460 DOI: 10.3390/biom12101344] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2022] [Revised: 09/15/2022] [Accepted: 09/17/2022] [Indexed: 11/16/2022] Open
Abstract
Alzheimer’s disease (AD) is the most common neurodegenerative disorder in the elderly. The two cardinal neuropathological hallmarks of AD are the senile plaques, which are extracellular deposits mainly constituted by beta-amyloids, and neurofibrillary tangles formed by abnormally phosphorylated Tau (p-Tau) located in the cytoplasm of neurons. Although the research has made relevant progress in the management of the disease, the treatment is still lacking. Only symptomatic medications exist for the disease, and, in the meantime, laboratories worldwide are investigating disease-modifying treatments for AD. In the present review, results centered on the use of peptides of different sizes involved in AD are presented.
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Affiliation(s)
- Pasquale Picone
- Istituto per la Ricerca e l’Innovazione Biomedica, Consiglio Nazionale delle Ricerche, Via U. La Malfa 153, 90146 Palermo, Italy
- Dipartmento of Scienze Biologiche, Chimiche, Farmaceutiche e Tecnologiche (STEBICEF), University of Palermo, 90128 Palermo, Italy
| | - Tiziana Sanfilippo
- Ambulatorio di Nutrizione Clinica ASP Palermo, Via G. Cusmano 24, 90141 Palermo, Italy
- Anestesia e Rianimazione, Presidio Ospedaliero “S. Cimino”, 90141 Termini Imerese, Italy
| | - Sonya Vasto
- Dipartmento of Scienze Biologiche, Chimiche, Farmaceutiche e Tecnologiche (STEBICEF), University of Palermo, 90128 Palermo, Italy
- Istituti Euro-Mediterranei di Scienza e Tecnologia (IEMEST), Via M. Miraglia 20, 90139 Palermo, Italy
| | - Sara Baldassano
- Dipartmento of Scienze Biologiche, Chimiche, Farmaceutiche e Tecnologiche (STEBICEF), University of Palermo, 90128 Palermo, Italy
| | - Rossella Guggino
- Ambulatorio di Nutrizione Clinica ASP Palermo, Via G. Cusmano 24, 90141 Palermo, Italy
- Anestesia e Rianimazione, Presidio Ospedaliero “S. Cimino”, 90141 Termini Imerese, Italy
| | - Domenico Nuzzo
- Istituto per la Ricerca e l’Innovazione Biomedica, Consiglio Nazionale delle Ricerche, Via U. La Malfa 153, 90146 Palermo, Italy
- Dipartmento of Scienze Biologiche, Chimiche, Farmaceutiche e Tecnologiche (STEBICEF), University of Palermo, 90128 Palermo, Italy
- Correspondence: (D.N.); (D.G.)
| | - Donatella Bulone
- Istituto di Biofisica, Consiglio Nazionale delle Ricerche, Via U. La Malfa 153, 90146 Palermo, Italy
| | - Pier Luigi San Biagio
- Istituto di Biofisica, Consiglio Nazionale delle Ricerche, Via U. La Malfa 153, 90146 Palermo, Italy
| | - Emanuela Muscolino
- Dipartimento di Ingegneria, Università degli Studi di Palermo, Viale delle Scienze, Bldg 6, 90128 Palermo, Italy
| | - Roberto Monastero
- Dipartimento di Biomedicina, Neuroscienze e Diagnostica Avanzata, Università degli Studi di Palermo, Via del Vespro 129, 90127 Palermo, Italy
| | - Clelia Dispenza
- Dipartimento di Ingegneria, Università degli Studi di Palermo, Viale delle Scienze, Bldg 6, 90128 Palermo, Italy
| | - Daniela Giacomazza
- Istituto di Biofisica, Consiglio Nazionale delle Ricerche, Via U. La Malfa 153, 90146 Palermo, Italy
- Correspondence: (D.N.); (D.G.)
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13
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Uncoupling the Hsp90 and DnaK chaperone activities revealed the in vivo relevance of their collaboration in bacteria. Proc Natl Acad Sci U S A 2022; 119:e2201779119. [PMID: 36070342 PMCID: PMC9478669 DOI: 10.1073/pnas.2201779119] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Chaperone proteins are essential in all living cells to ensure protein homeostasis. Hsp90 is a major adenosine triphosphate (ATP)-dependent chaperone highly conserved from bacteria to eukaryotes. Recent studies have shown that bacterial Hsp90 is essential in some bacteria in stress conditions and that it participates in the virulence of pathogenic bacteria. In vitro, bacterial Hsp90 directly interacts and collaborates with the Hsp70 chaperone DnaK to reactivate model substrate proteins; however, it is still unknown whether this collaboration is relevant in vivo with physiological substrates. Here, we used site-directed mutagenesis on Hsp90 to impair DnaK binding, thereby uncoupling the chaperone activities. We tested the mutants in vivo in two bacterial models in which Hsp90 has known physiological functions. We found that the Hsp90 point mutants were defective to support (1) growth under heat stress and activation of an essential Hsp90 client in the aquatic bacterium Shewanella oneidensis and (2) biosynthesis of the colibactin toxin involved in the virulence of pathogenic Escherichia coli. Our study therefore demonstrates the essentiality of the direct collaboration between Hsp90 and DnaK in vivo in bacteria to support client folding. It also suggests that this collaboration already functional in bacteria has served as an evolutionary basis for a more complex Hsp70-Hsp90 collaboration found in eukaryotes.
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14
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Wang F, Zhang H, Wang H, Qiu T, He B, Yang Q. Combination of AURKA inhibitor and HSP90 inhibitor to treat breast cancer with AURKA overexpression and TP53 mutations. MEDICAL ONCOLOGY (NORTHWOOD, LONDON, ENGLAND) 2022; 39:180. [PMID: 36071247 DOI: 10.1007/s12032-022-01777-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/09/2022] [Accepted: 06/16/2022] [Indexed: 11/25/2022]
Abstract
Breast cancer is the most common cancer among women worldwide. Researches show that Aurora kinase A (AURKA) is highly expressed in approximately 73% of breast cancer patients, which induces drug resistance in breast cancer patients and decreases the median survival time. AURKA regulates spindle assembly, centrosome maturation, and chromosome alignment. AURKA overexpression affects the occurrence and development of breast cancer. Besides AURKA overexpression, heat shock protein 90 (HSP90) maintains the survival and proliferation of tumor cells by stabilizing the structure of oncoproteins, including P53 mutants (mtP53). TP53 mutations accounted for approximately 13%, 40%, 80%, 33%, 71%, and 82% of luminal A, Luminal B, Luminal C, normal basal-like, HER2-amplified, and basal-like breast cancers, respectively. TP53 mutation can aggravate cell genome instability and enhance the invasion, migration, and resistance of cancer cell. This review describes the research status of AURKA and HSP90 in breast cancer, summarizes the structure, function, and the chaperone cycle of HSP90, elaborates the interrelation between HSP90, mtP53, P53, and AURKA, and proposes the combination of HSP90 inhibitor and AURKA inhibitor to treat breast cancer. Targeting AURKA and HSP90 to treat cancer with AURKA overexpression and TP53 mutations will help improve the specificity and efficiency of breast cancer treatment and solve the problem of drug resistance.
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Affiliation(s)
- Fuping Wang
- Beijing Key Laboratory of Resistant Gene Resources and Molecular Development, College of Life Sciences, Beijing Normal University, Beijing, 100000, China
| | - Haotian Zhang
- Beijing Key Laboratory of Resistant Gene Resources and Molecular Development, College of Life Sciences, Beijing Normal University, Beijing, 100000, China
| | - Haitao Wang
- Department of Hematology, Fourth Medical Center, Chinese PLA General Hospital, Beijing, 100000, China
| | - Tian Qiu
- Department of Pathology, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100000, China
| | - Binghong He
- Beijing Key Laboratory of Resistant Gene Resources and Molecular Development, College of Life Sciences, Beijing Normal University, Beijing, 100000, China
| | - Qiong Yang
- Beijing Key Laboratory of Resistant Gene Resources and Molecular Development, College of Life Sciences, Beijing Normal University, Beijing, 100000, China.
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15
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Fan L, Kishore A, Jansen-Olliges L, Wang D, Stahl F, Psathaki OE, Harre J, Warnecke A, Weder J, Preller M, Zeilinger C. Identification of a Thyroid Hormone Binding Site in Hsp90 with Implications for Its Interaction with Thyroid Hormone Receptor Beta. ACS OMEGA 2022; 7:28932-28945. [PMID: 36033668 PMCID: PMC9404468 DOI: 10.1021/acsomega.2c02331] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/14/2022] [Accepted: 07/19/2022] [Indexed: 06/15/2023]
Abstract
While many proteins are known clients of heat shock protein 90 (Hsp90), it is unclear whether the transcription factor, thyroid hormone receptor beta (TRb), interacts with Hsp90 to control hormonal perception and signaling. Higher Hsp90 expression in mouse fibroblasts was elicited by the addition of triiodothyronine (T3). T3 bound to Hsp90 and enhanced adenosine triphosphate (ATP) binding of Hsp90 due to a specific binding site for T3, as identified by molecular docking experiments. The binding of TRb to Hsp90 was prevented by T3 or by the thyroid mimetic sobetirome. Purified recombinant TRb trapped Hsp90 from cell lysate or purified Hsp90 in pull-down experiments. The affinity of Hsp90 for TRb was 124 nM. Furthermore, T3 induced the release of bound TRb from Hsp90, which was shown by streptavidin-conjugated quantum dot (SAv-QD) masking assay. The data indicate that the T3 interaction with TRb and Hsp90 may be an amplifier of the cellular stress response by blocking Hsp90 activity.
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Affiliation(s)
- Lu Fan
- BMWZ
(Zentrum für Biomolekulare Wirkstoffe), Gottfried-Wilhelm-Leibniz University of Hannover, Hannover 30167, Germany
- Clinic
for Otorhinolaryngology Surgery, Hannover
Medical School (MHH), Hannover 30625, Germany
| | - Anusha Kishore
- BMWZ
(Zentrum für Biomolekulare Wirkstoffe), Gottfried-Wilhelm-Leibniz University of Hannover, Hannover 30167, Germany
| | - Linda Jansen-Olliges
- BMWZ
(Zentrum für Biomolekulare Wirkstoffe), Gottfried-Wilhelm-Leibniz University of Hannover, Hannover 30167, Germany
| | - Dahua Wang
- BMWZ
(Zentrum für Biomolekulare Wirkstoffe), Gottfried-Wilhelm-Leibniz University of Hannover, Hannover 30167, Germany
- Clinic
for Otorhinolaryngology Surgery, Hannover
Medical School (MHH), Hannover 30625, Germany
| | - Frank Stahl
- Institut
für Technische Chemie, Gottfried-Wilhelm-Leibniz
University of Hannover, Hannover 30167, Germany
| | - Olympia Ekaterini Psathaki
- Center
of Cellular Nanoanalytics, Integrated Bioimaging Facility, University of Osnabrück, Osnabrück 49076, Germany
| | - Jennifer Harre
- Clinic
for Otorhinolaryngology Surgery, Hannover
Medical School (MHH), Hannover 30625, Germany
| | - Athanasia Warnecke
- Clinic
for Otorhinolaryngology Surgery, Hannover
Medical School (MHH), Hannover 30625, Germany
| | - Julia Weder
- Institute
for Biophysical Chemistry, Hannover Medical
School, Carl-Neuberg-Straβe
1, Hannover 30625, Germany
- Institute
for Functional Gene Analytics (IFGA), Department of Natural Sciences, University of Applied Sciences Bonn-Rhein-Sieg, Von-Liebig-Str. 20, Rheinbach 53359, Germany
| | - Matthias Preller
- Institute
for Biophysical Chemistry, Hannover Medical
School, Carl-Neuberg-Straβe
1, Hannover 30625, Germany
- Institute
for Functional Gene Analytics (IFGA), Department of Natural Sciences, University of Applied Sciences Bonn-Rhein-Sieg, Von-Liebig-Str. 20, Rheinbach 53359, Germany
| | - Carsten Zeilinger
- BMWZ
(Zentrum für Biomolekulare Wirkstoffe), Gottfried-Wilhelm-Leibniz University of Hannover, Hannover 30167, Germany
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16
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Verkhivker GM. Conformational Dynamics and Mechanisms of Client Protein Integration into the Hsp90 Chaperone Controlled by Allosteric Interactions of Regulatory Switches: Perturbation-Based Network Approach for Mutational Profiling of the Hsp90 Binding and Allostery. J Phys Chem B 2022; 126:5421-5442. [PMID: 35853093 DOI: 10.1021/acs.jpcb.2c03464] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Understanding the allosteric mechanisms of the Hsp90 chaperone interactions with cochaperones and client protein clientele is fundamental to dissect activation and regulation of many proteins. In this work, atomistic simulations are combined with perturbation-based approaches and dynamic network modeling for a comparative mutational profiling of the Hsp90 binding and allosteric interaction networks in the three Hsp90 maturation complexes with FKBP51 and P23 cochaperones and the glucocorticoid receptor (GR) client. The conformational dynamics signatures of the Hsp90 complexes and dynamics fluctuation analysis revealed how the intrinsic plasticity of the Hsp90 dimer can be modulated by cochaperones and client proteins to stabilize the closed dimer state required at the maturation stage of the ATPase cycle. In silico deep mutational scanning of the protein residues characterized the hot spots of protein stability and binding affinity in the Hsp90 complexes, showing that binding hot spots may often coincide with the regulatory centers that modulate dynamic allostery in the Hsp90 dimer. We introduce a perturbation-based network approach for mutational scanning of allosteric residue potentials and characterize allosteric switch clusters that control mechanism of cochaperone-dependent client recognition and remodeling by the Hsp90 chaperone. The results revealed a conserved network of allosteric switches in the Hsp90 complexes that allow cochaperones and GR protein to become integrated into the Hsp90 system by anchoring to the conformational switch points in the functional Hsp90 regions. This study suggests that the Hsp90 binding and allostery may operate under a regulatory mechanism in which activation or repression of the Hsp90 activity can be pre-encoded in the allosterically regulated Hsp90 dimer motions. By binding directly to the conformational switch centers on the Hsp90, cochaperones and interacting proteins can efficiently modulate the allosteric interactions and long-range communications required for client remodeling and activation.
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Affiliation(s)
- Gennady M Verkhivker
- Keck Center for Science and Engineering, Schmid College of Science and Technology, Chapman University, 1 University Drive, Orange, California 92866, United States
- Depatment of Biomedical and Pharmaceutical Sciences, Chapman University School of Pharmacy, Irvine, California 92618, United States
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17
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Joshi A, Ito T, Picard D, Neckers L. The Mitochondrial HSP90 Paralog TRAP1: Structural Dynamics, Interactome, Role in Metabolic Regulation, and Inhibitors. Biomolecules 2022; 12:biom12070880. [PMID: 35883436 PMCID: PMC9312948 DOI: 10.3390/biom12070880] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2022] [Revised: 06/21/2022] [Accepted: 06/22/2022] [Indexed: 02/04/2023] Open
Abstract
The HSP90 paralog TRAP1 was discovered more than 20 years ago; yet, a detailed understanding of the function of this mitochondrial molecular chaperone remains elusive. The dispensable nature of TRAP1 in vitro and in vivo further complicates an understanding of its role in mitochondrial biology. TRAP1 is more homologous to the bacterial HSP90, HtpG, than to eukaryotic HSP90. Lacking co-chaperones, the unique structural features of TRAP1 likely regulate its temperature-sensitive ATPase activity and shed light on the alternative mechanisms driving the chaperone’s nucleotide-dependent cycle in a defined environment whose physiological temperature approaches 50 °C. TRAP1 appears to be an important bioregulator of mitochondrial respiration, mediating the balance between oxidative phosphorylation and glycolysis, while at the same time promoting mitochondrial homeostasis and displaying cytoprotective activity. Inactivation/loss of TRAP1 has been observed in several neurodegenerative diseases while TRAP1 expression is reported to be elevated in multiple cancers and, as with HSP90, evidence of addiction to TRAP1 has been observed. In this review, we summarize what is currently known about this unique HSP90 paralog and why a better understanding of TRAP1 structure, function, and regulation is likely to enhance our understanding of the mechanistic basis of mitochondrial homeostasis.
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Affiliation(s)
- Abhinav Joshi
- Urologic Oncology Branch, Center for Cancer Research, National Cancer Institute (NCI), Bethesda, MD 20892, USA; (A.J.); (T.I.)
| | - Takeshi Ito
- Urologic Oncology Branch, Center for Cancer Research, National Cancer Institute (NCI), Bethesda, MD 20892, USA; (A.J.); (T.I.)
| | - Didier Picard
- Department of Molecular and Cellular Biology, Université de Genève, Sciences III, 30 Quai Ernest-Ansermet, CH-1211 Geneva, Switzerland;
| | - Len Neckers
- Urologic Oncology Branch, Center for Cancer Research, National Cancer Institute (NCI), Bethesda, MD 20892, USA; (A.J.); (T.I.)
- Correspondence: ; Tel.: +1-240-858-3918
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18
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Xu H. Non-Equilibrium Protein Folding and Activation by ATP-Driven Chaperones. Biomolecules 2022; 12:biom12060832. [PMID: 35740957 PMCID: PMC9221429 DOI: 10.3390/biom12060832] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2022] [Revised: 06/10/2022] [Accepted: 06/13/2022] [Indexed: 12/14/2022] Open
Abstract
Recent experimental studies suggest that ATP-driven molecular chaperones can stabilize protein substrates in their native structures out of thermal equilibrium. The mechanism of such non-equilibrium protein folding is an open question. Based on available structural and biochemical evidence, I propose here a unifying principle that underlies the conversion of chemical energy from ATP hydrolysis to the conformational free energy associated with protein folding and activation. I demonstrate that non-equilibrium folding requires the chaperones to break at least one of four symmetry conditions. The Hsp70 and Hsp90 chaperones each break a different subset of these symmetries and thus they use different mechanisms for non-equilibrium protein folding. I derive an upper bound on the non-equilibrium elevation of the native concentration, which implies that non-equilibrium folding only occurs in slow-folding proteins that adopt an unstable intermediate conformation in binding to ATP-driven chaperones. Contrary to the long-held view of Anfinsen’s hypothesis that proteins fold to their conformational free energy minima, my results predict that some proteins may fold into thermodynamically unstable native structures with the assistance of ATP-driven chaperones, and that the native structures of some chaperone-dependent proteins may be shaped by their chaperone-mediated folding pathways.
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Affiliation(s)
- Huafeng Xu
- Roivant Sciences, New York, NY 10036, USA
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19
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Ma H, Cheng N, Zhang C. Schizophrenia and Alarmins. MEDICINA (KAUNAS, LITHUANIA) 2022; 58:medicina58060694. [PMID: 35743957 PMCID: PMC9230958 DOI: 10.3390/medicina58060694] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 04/29/2022] [Revised: 05/20/2022] [Accepted: 05/20/2022] [Indexed: 11/16/2022]
Abstract
Schizophrenia, consisting of a group of severe psychiatric disorders with a complex etiology, is a leading cause of disability globally. Due to the lack of objective indicators, accurate diagnosis and selection of effective treatments for schizophrenia remain challenging. The association between schizophrenia and alarmins levels has been proposed for many years, but without solid evidence. Alarmins are prestored molecules that do not require processing and can be released upon cell death or damage, making them an ideal candidate for an early initiator of inflammation. Immunological biomarkers seem to be related to disease progression and treatment effectiveness. Several studies suggest strong associations among the high-mobility group box 1 protein (HMGB1), interleukin-1α, interleukin-33, S100B, heat-shock proteins, and uric acid with schizophrenic disorders. The purpose of this review is to discuss the evidence of central and peripheral immune findings in schizophrenia, their potential causes, and the effects of immunomodulatory therapies on symptoms and outline potential applications of these markers in managing the illness. Although there are currently no effective markers for diagnosing or predicting treatment effects in patients with schizophrenia, we believe that screening immune-inflammatory biomarkers that are closely related to the pathological mechanism of schizophrenia can be used for early clinical identification, diagnosis, and treatment of schizophrenia, which may lead to more effective treatment options for people with schizophrenia.
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Affiliation(s)
- Huan Ma
- Department of Psychiatry, First Clinical College, Xuzhou Medical University, Xuzhou 221000, China; (H.M.); (N.C.)
| | - Ning Cheng
- Department of Psychiatry, First Clinical College, Xuzhou Medical University, Xuzhou 221000, China; (H.M.); (N.C.)
| | - Caiyi Zhang
- Department of Psychiatry, First Clinical College, Xuzhou Medical University, Xuzhou 221000, China; (H.M.); (N.C.)
- Department of Psychiatry, The Affiliated Xuzhou Oriental Hospital of Xuzhou Medical University, Xuzhou 221000, China
- Department of Medical Psychology, Second Clinical College, Xuzhou Medical University, Xuzhou 221000, China
- Correspondence: ; Tel.: +86-137-7588-9105
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20
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Rutledge BS, Choy WY, Duennwald ML. Folding or holding?-Hsp70 and Hsp90 chaperoning of misfolded proteins in neurodegenerative disease. J Biol Chem 2022; 298:101905. [PMID: 35398094 PMCID: PMC9079180 DOI: 10.1016/j.jbc.2022.101905] [Citation(s) in RCA: 39] [Impact Index Per Article: 19.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2021] [Revised: 03/28/2022] [Accepted: 03/30/2022] [Indexed: 02/08/2023] Open
Abstract
The toxic accumulation of misfolded proteins as inclusions, fibrils, or aggregates is a hallmark of many neurodegenerative diseases. However, how molecular chaperones, such as heat shock protein 70 kDa (Hsp70) and heat shock protein 90 kDa (Hsp90), defend cells against the accumulation of misfolded proteins remains unclear. The ATP-dependent foldase function of both Hsp70 and Hsp90 actively transitions misfolded proteins back to their native conformation. By contrast, the ATP-independent holdase function of Hsp70 and Hsp90 prevents the accumulation of misfolded proteins. Foldase and holdase functions can protect against the toxicity associated with protein misfolding, yet we are only beginning to understand the mechanisms through which they modulate neurodegeneration. This review compares recent structural findings regarding the binding of Hsp90 to misfolded and intrinsically disordered proteins, such as tau, α-synuclein, and Tar DNA-binding protein 43. We propose that Hsp90 and Hsp70 interact with these proteins through an extended and dynamic interface that spans the surface of multiple domains of the chaperone proteins. This contrasts with many other Hsp90–client protein interactions for which only a single bound conformation of Hsp90 is proposed. The dynamic nature of these multidomain interactions allows for polymorphic binding of multiple conformations to vast regions of Hsp90. The holdase functions of Hsp70 and Hsp90 may thus allow neuronal cells to modulate misfolded proteins more efficiently by reducing the long-term ATP running costs of the chaperone budget. However, it remains unclear whether holdase functions protect cells by preventing aggregate formation or can increase neurotoxicity by inadvertently stabilizing deleterious oligomers.
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Affiliation(s)
| | - Wing-Yiu Choy
- Department of Biochemistry, Western University, London, Ontario, Canada
| | - Martin L Duennwald
- Department of Anatomy and Cell Biology, Western University, London, Ontario, Canada.
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21
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Keramisanou D, Vasantha Kumar M, Boose N, Abzalimov RR, Gelis I. Assembly mechanism of early Hsp90-Cdc37-kinase complexes. SCIENCE ADVANCES 2022; 8:eabm9294. [PMID: 35294247 PMCID: PMC8926337 DOI: 10.1126/sciadv.abm9294] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/21/2021] [Accepted: 01/25/2022] [Indexed: 05/27/2023]
Abstract
Molecular chaperones have an essential role for the maintenance of a balanced protein homeostasis. Here, we investigate how protein kinases are recruited and loaded to the Hsp90-Cdc37 complex, the first step during Hsp90-mediated chaperoning that leads to enhanced client kinase stability and activation. We show that conformational dynamics of all partners is a critical feature of the underlying loading mechanism. The kinome co-chaperone Cdc37 exists primarily in a dynamic extended conformation but samples a low-populated, well-defined compact structure. Exchange between these two states is maintained in an assembled Hsp90-Cdc37 complex and is necessary for substrate loading. Breathing motions at the N-lobe of a free kinase domain partially expose the kinase segment trapped in the Hsp90 dimer downstream in the cycle. Thus, client dynamics poise for chaperone dependence. Hsp90 is not directly involved during loading, and Cdc37 is assigned the task of sensing clients by stabilizing the preexisting partially unfolded client state.
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Affiliation(s)
| | | | - Nicole Boose
- Department of Chemistry, University of South Florida, Tampa, FL 33620, USA
| | - Rinat R. Abzalimov
- Structural Biology Initiative, CUNY Advanced Science Research Center, New York, NY 10031, USA
| | - Ioannis Gelis
- Department of Chemistry, University of South Florida, Tampa, FL 33620, USA
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22
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Exploring Mechanisms of Allosteric Regulation and Communication Switching in the Multiprotein Regulatory Complexes of the Hsp90 Chaperone with Cochaperones and Client Proteins : Atomistic Insights from Integrative Biophysical Modeling and Network Analysis of Conformational Landscapes. J Mol Biol 2022; 434:167506. [DOI: 10.1016/j.jmb.2022.167506] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2022] [Revised: 02/14/2022] [Accepted: 02/15/2022] [Indexed: 12/16/2022]
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23
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Miyazaki Y, Kikuchi M, Umezawa K, Descamps A, Nakamura D, Furuie G, Sumida T, Saito K, Kimura N, Niwa T, Sumida Y, Umehara T, Hosoya T, Kii I. Structure-activity relationship for the folding intermediate-selective inhibition of DYRK1A. Eur J Med Chem 2022; 227:113948. [PMID: 34742017 DOI: 10.1016/j.ejmech.2021.113948] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2021] [Revised: 10/21/2021] [Accepted: 10/21/2021] [Indexed: 01/06/2023]
Abstract
DYRK1A phosphorylates proteins involved in neurological disorders in an intermolecular manner. Meanwhile, during the protein folding process of DYRK1A, a transitional folding intermediate catalyzes the intramolecular autophosphorylation required for the "one-off" inceptive activation and stabilization. In our previous study, a small molecule termed FINDY (1) was identified, which inhibits the folding intermediate-catalyzed intramolecular autophosphorylation of DYRK1A but not the folded state-catalyzed intermolecular phosphorylation. However, the structural features of FINDY (1) responsible for this intermediate-selective inhibition remain elusive. In this study, structural derivatives of FINDY (1) were designed and synthesized according to its predicted binding mode in the ATP pocket of DYRK1A. Quantitative structure-activity relationship (QSAR) of the derivatives revealed that the selectivity against the folding intermediate is determined by steric hindrance between the bulky hydrophobic moiety of the derivatives and the entrance to the pocket. In addition, a potent derivative 3 was identified, which inhibited the folding intermediate more strongly than FINDY (1); it was designated as dp-FINDY. Although dp-FINDY (3) did not inhibit the folded state, as well as FINDY (1), it inhibited the intramolecular autophosphorylation of DYRK1A in an in vitro cell-free protein synthesis assay. Furthermore, dp-FINDY (3) destabilized endogenous DYRK1A in HEK293 cells. This study provides structural insights into the folding intermediate-selective inhibition of DYRK1A and expands the chemical options for the design of a kinase inhibitor.
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Affiliation(s)
- Yuka Miyazaki
- Laboratory for Drug Target Research, Department of Agriculture, Graduate School of Science and Technology, Shinshu University, 8304 Minami-Minowa, Kami-Ina, Nagano, 399-4598, Japan
| | - Masaki Kikuchi
- Laboratory for Epigenetics Drug Discovery, RIKEN Center for Biosystems Dynamics Research, 1-7-22 Suehiro-cho, Tsurumi-ku, Yokohama, Kanagawa, 230-0045, Japan
| | - Koji Umezawa
- Department of Biomolecular Innovation, Institute for Biomedical Sciences, Shinshu University, 8304 Minami-Minowa, Kami-Ina, Nagano, 399-4598, Japan
| | - Aurelie Descamps
- Laboratory for Chemical Biology, RIKEN Center for Biosystems Dynamics Research, 6-7-3 Minatojima-Minamimachi, Chuo-ku, Kobe, 650-0047, Japan
| | - Daichi Nakamura
- Laboratory for Chemical Biology, RIKEN Center for Biosystems Dynamics Research, 6-7-3 Minatojima-Minamimachi, Chuo-ku, Kobe, 650-0047, Japan
| | - Gaku Furuie
- Laboratory for Drug Target Research, Department of Agriculture, Graduate School of Science and Technology, Shinshu University, 8304 Minami-Minowa, Kami-Ina, Nagano, 399-4598, Japan
| | - Tomoe Sumida
- Laboratory for Chemical Biology, RIKEN Center for Biosystems Dynamics Research, 6-7-3 Minatojima-Minamimachi, Chuo-ku, Kobe, 650-0047, Japan
| | - Kanako Saito
- Laboratory for Drug Target Research, Department of Agriculture, Graduate School of Science and Technology, Shinshu University, 8304 Minami-Minowa, Kami-Ina, Nagano, 399-4598, Japan
| | - Ninako Kimura
- Laboratory for Drug Target Research, Department of Agriculture, Graduate School of Science and Technology, Shinshu University, 8304 Minami-Minowa, Kami-Ina, Nagano, 399-4598, Japan
| | - Takashi Niwa
- Laboratory for Chemical Biology, RIKEN Center for Biosystems Dynamics Research, 6-7-3 Minatojima-Minamimachi, Chuo-ku, Kobe, 650-0047, Japan
| | - Yuto Sumida
- Laboratory for Chemical Biology, RIKEN Center for Biosystems Dynamics Research, 6-7-3 Minatojima-Minamimachi, Chuo-ku, Kobe, 650-0047, Japan
| | - Takashi Umehara
- Laboratory for Epigenetics Drug Discovery, RIKEN Center for Biosystems Dynamics Research, 1-7-22 Suehiro-cho, Tsurumi-ku, Yokohama, Kanagawa, 230-0045, Japan
| | - Takamitsu Hosoya
- Laboratory for Chemical Biology, RIKEN Center for Biosystems Dynamics Research, 6-7-3 Minatojima-Minamimachi, Chuo-ku, Kobe, 650-0047, Japan; Laboratory of Chemical Bioscience, Institute of Biomaterials and Bioengineering, Tokyo Medical and Dental University (TMDU), 2-3-10 Kanda-Surugadai, Chiyoda-ku, Tokyo, 101-0062, Japan
| | - Isao Kii
- Laboratory for Drug Target Research, Department of Agriculture, Graduate School of Science and Technology, Shinshu University, 8304 Minami-Minowa, Kami-Ina, Nagano, 399-4598, Japan; Department of Biomolecular Innovation, Institute for Biomedical Sciences, Shinshu University, 8304 Minami-Minowa, Kami-Ina, Nagano, 399-4598, Japan; Laboratory for Chemical Biology, RIKEN Center for Biosystems Dynamics Research, 6-7-3 Minatojima-Minamimachi, Chuo-ku, Kobe, 650-0047, Japan.
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Kishore A, Fetter A, Zeilinger C. Microarray-Based Screening of Putative HSP90 Inhibitors Predicted and Isolated from Microorganisms. Methods Mol Biol 2022; 2489:435-448. [PMID: 35524063 DOI: 10.1007/978-1-0716-2273-5_22] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Protein microarrays are useful tools for detecting the presence of a target where different prey and bait combinations exist. Here we describe the extended application for a functional target-oriented screening assay with full length Heat shock proteins (HSPs ) for the identification of novel compounds.
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Affiliation(s)
- Anusha Kishore
- Gottfried-Wilhelm-Leibniz University of Hannover, BMWZ (Zentrum für Biomolekulare Wirkstoffe), Hannover, Germany
| | - Artem Fetter
- Gottfried-Wilhelm-Leibniz University of Hannover, BMWZ (Zentrum für Biomolekulare Wirkstoffe), Hannover, Germany
| | - Carsten Zeilinger
- Gottfried-Wilhelm-Leibniz University of Hannover, BMWZ (Zentrum für Biomolekulare Wirkstoffe), Hannover, Germany.
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25
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Stofberg ML, Caillet C, de Villiers M, Zininga T. Inhibitors of the Plasmodium falciparum Hsp90 towards Selective Antimalarial Drug Design: The Past, Present and Future. Cells 2021; 10:2849. [PMID: 34831072 PMCID: PMC8616389 DOI: 10.3390/cells10112849] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2021] [Revised: 10/14/2021] [Accepted: 10/15/2021] [Indexed: 12/12/2022] Open
Abstract
Malaria is still one of the major killer parasitic diseases in tropical settings, posing a public health threat. The development of antimalarial drug resistance is reversing the gains made in attempts to control the disease. The parasite leads a complex life cycle that has adapted to outwit almost all known antimalarial drugs to date, including the first line of treatment, artesunate. There is a high unmet need to develop new strategies and identify novel therapeutics to reverse antimalarial drug resistance development. Among the strategies, here we focus and discuss the merits of the development of antimalarials targeting the Heat shock protein 90 (Hsp90) due to the central role it plays in protein quality control.
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Affiliation(s)
| | | | | | - Tawanda Zininga
- Department of Biochemistry, Stellenbosch University, Stellenbosch 7600, South Africa; (M.L.S.); (C.C.); (M.d.V.)
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26
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Agwunobi DO, Wang T, Zhang M, Wang T, Jia Q, Zhang M, Shi X, Yu Z, Liu J. Functional implication of heat shock protein 70/90 and tubulin in cold stress of Dermacentor silvarum. Parasit Vectors 2021; 14:542. [PMID: 34666804 PMCID: PMC8527796 DOI: 10.1186/s13071-021-05056-y] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2021] [Accepted: 10/05/2021] [Indexed: 11/24/2022] Open
Abstract
Background The tick Dermacentor silvarum Olenev (Acari: Ixodidae) is a vital vector tick species mainly distributed in the north of China and overwinters in the unfed adult stage. The knowledge of the mechanism that underlies its molecular adaptation against cold is limited. In the present study, genes of hsp70 and hsp90 cDNA, named Dshsp70 and Dshsp90, and tubulin were cloned and characterized from D. silvarum, and their functions in cold stress were further evaluated. Methods The genome of the heat shock proteins and tubulin of D. silvarum were sequenced and analyzed using bioinformatics methods. Each group of 20 ticks were injected in triplicate with Dshsp90-, Dshsp70-, and tubulin-derived dsRNA, whereas the control group was injected with GFP dsRNA. Then, the total RNA was extracted and cDNA was synthesized and subjected to RT-qPCR. After the confirmation of knockdown, the ticks were incubated for 24 h and were exposed to − 20 °C lethal temperature (LT50), and then the mortality was calculated. Results Results indicated that Dshsp70 and Dshsp90 contained an open reading frame of 345 and 2190 nucleotides that encoded 114 and 729 amino acid residues, respectively. The transcript Dshsp70 showed 90% similarity with that identified from Dermacentor variabilis, whereas Dshsp90 showed 85% similarity with that identified from Ixodes scapularis. Multiple sequence alignment indicates that the deduced amino acid sequences of D. silvarum Hsp90, Hsp70, and tubulin show very high sequence identity to their corresponding sequences in other species. Hsp90 and Hsp70 display highly conserved and signature amino acid sequences with well-conserved MEEVD motif at the C-terminal in Hsp90 and a variable C-terminal region with a V/IEEVD-motif in Hsp70 that bind to numerous co-chaperones. RNA interference revealed that the mortality of D. silvarum was significantly increased after injection of dsRNA of Dshsp70 (P = 0.0298) and tubulin (P = 0.0448), whereas no significant increases were observed after the interference of Dshsp90 (P = 0.0709). Conclusions The above results suggested that Dshsp70 and tubulin play an essential role in the low-temperature adaptation of ticks. The results of this study can contribute to the understanding of the survival and acclimatization of overwintering ticks. Graphical abstract ![]()
Supplementary Information The online version contains supplementary material available at 10.1186/s13071-021-05056-y.
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Affiliation(s)
- Desmond O Agwunobi
- Hebei Key Laboratory of Animal Physiology, Biochemistry and Molecular Biology, College of Life Sciences, Hebei Normal University, Shijiazhuang, 050024, China
| | - Tongxuan Wang
- Hebei Key Laboratory of Animal Physiology, Biochemistry and Molecular Biology, College of Life Sciences, Hebei Normal University, Shijiazhuang, 050024, China
| | - Meng Zhang
- Hebei Key Laboratory of Animal Physiology, Biochemistry and Molecular Biology, College of Life Sciences, Hebei Normal University, Shijiazhuang, 050024, China
| | - Tianhong Wang
- Hebei Key Laboratory of Animal Physiology, Biochemistry and Molecular Biology, College of Life Sciences, Hebei Normal University, Shijiazhuang, 050024, China
| | - Qingying Jia
- Hebei Key Laboratory of Animal Physiology, Biochemistry and Molecular Biology, College of Life Sciences, Hebei Normal University, Shijiazhuang, 050024, China
| | - Miao Zhang
- Hebei Key Laboratory of Animal Physiology, Biochemistry and Molecular Biology, College of Life Sciences, Hebei Normal University, Shijiazhuang, 050024, China
| | - Xinyue Shi
- Hebei Key Laboratory of Animal Physiology, Biochemistry and Molecular Biology, College of Life Sciences, Hebei Normal University, Shijiazhuang, 050024, China
| | - Zhijun Yu
- Hebei Key Laboratory of Animal Physiology, Biochemistry and Molecular Biology, College of Life Sciences, Hebei Normal University, Shijiazhuang, 050024, China.
| | - Jingze Liu
- Hebei Key Laboratory of Animal Physiology, Biochemistry and Molecular Biology, College of Life Sciences, Hebei Normal University, Shijiazhuang, 050024, China.
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27
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Cytosolic and Mitochondrial Hsp90 in Cytokinesis, Mitochondrial DNA Replication, and Drug Action in Trypanosoma brucei. Antimicrob Agents Chemother 2021; 65:e0063221. [PMID: 34424040 DOI: 10.1128/aac.00632-21] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
Trypanosoma brucei subspecies cause African sleeping sickness in humans, an infection that is commonly fatal if not treated, and available therapies are limited. Previous studies have shown that heat shock protein 90 (Hsp90) inhibitors have potent and vivid activity against bloodstream-form trypanosomes. Hsp90s are phylogenetically conserved and essential catalysts that function at the crux of cell biology, where they ensure the proper folding of proteins and their assembly into multicomponent complexes. To assess the specificity of Hsp90 inhibitors and further define the role of Hsp90s in African trypanosomes, we used RNA interference (RNAi) to knock down cytosolic and mitochondrial Hsp90s (HSP83 and HSP84, respectively). Loss of either protein led to cell death, but the phenotypes were distinctly different. Depletion of cytosolic HSP83 closely mimicked the consequences of chemically depleting Hsp90 activity with inhibitor 17-AAG. In these cells, cytokinesis was severely disrupted, and segregation of the kinetoplast (the massive mitochondrial DNA structure unique to this family of eukaryotic pathogens) was impaired, leading to cells with abnormal kinetoplast DNA (kDNA) structures. Quite differently, knockdown of mitochondrial HSP84 did not impair cytokinesis but halted the initiation of new kDNA synthesis, generating cells without kDNA. These findings highlight the central role of Hsp90s in chaperoning cell cycle regulators in trypanosomes, reveal their unique function in kinetoplast replication, and reinforce their specificity and value as drug targets.
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28
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Carrasco-Navarro V, Muñiz-González AB, Sorvari J, Martínez-Guitarte JL. Altered gene expression in Chironomus riparius (insecta) in response to tire rubber and polystyrene microplastics. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2021; 285:117462. [PMID: 34091266 DOI: 10.1016/j.envpol.2021.117462] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/04/2020] [Revised: 05/11/2021] [Accepted: 05/22/2021] [Indexed: 05/12/2023]
Abstract
The extent until which plastics are present in our surrounding environment completely exceeds our expectations. Plastic materials in the form of microplastics have been found in terrestrial, freshwater and marine environments and are transported through the atmosphere even to remote locations. However, we are still far from understanding the effects that they may have caused and are causing to biota. In the present study, we investigated the alterations in the expression of twelve genes in the aquatic insect Chironomus riparius after 36 h exposures to polystyrene and tire rubber microplastics at nominal concentrations of 1 and 10 mg L-1. The results indicated that several genes encoding for heat shock proteins (hsp90, Glycoprotein 93 (Gp93), hsc70, hsp60, hsp40, and the small HSP hsp17) were overexpressed respect to the control. In addition, the genes coding for manganese superoxide dismutase (SOD Mn, related to alleviation of oxidative stress) and for the FK506-binding protein of 39 kDa. (FKBP39, related to development and pupation) showed altered expression. Most of the alterations on gene expression level occurred at a concentration of 10 mg L-1 of tire rubber microplastics, although specific modifications arose at other concentrations of both rubber and polystyrene. On the contrary, one hsp gene (hsp10) and genes related to biotransformation and detoxification (Cyp9f2, Cyp12a2, and ABCB6) did not alter their expression in any of the treatments. Overall, the results of the gene expression indicated that microplastics (especially tire rubber) or their additives caused cellular stress that led to some alterations in the normal gene expression but did not cause any mortality after 36 h. These results highlight the need for more studies that describe the alterations caused by microplastics at the molecular level. Additionally, it opens questions about the effects caused to aquatic fauna in environmental realistic situations, especially in hot spots of microplastic contamination (e.g., tire rubber released in storm water runoff discharge points).
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Affiliation(s)
- Victor Carrasco-Navarro
- Department of Environmental and Biological Sciences, University of Eastern Finland, Kuopio Campus, Yliopistonranta 1 E, 70211, Kuopio, Finland.
| | - Ana-Belén Muñiz-González
- Group of Biology and Environmental Toxicology, Department of Mathematical Physics and Fluids, Faculty of Sciences, National Distance Education University (UNED), Madrid, Spain
| | - Jouni Sorvari
- Department of Environmental and Biological Sciences, University of Eastern Finland, Kuopio Campus, Yliopistonranta 1 E, 70211, Kuopio, Finland
| | - Jose-Luis Martínez-Guitarte
- Group of Biology and Environmental Toxicology, Department of Mathematical Physics and Fluids, Faculty of Sciences, National Distance Education University (UNED), Madrid, Spain
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29
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Wickner S, Nguyen TLL, Genest O. The Bacterial Hsp90 Chaperone: Cellular Functions and Mechanism of Action. Annu Rev Microbiol 2021; 75:719-739. [PMID: 34375543 DOI: 10.1146/annurev-micro-032421-035644] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Heat shock protein 90 (Hsp90) is a molecular chaperone that folds and remodels proteins, thereby regulating the activity of numerous substrate proteins. Hsp90 is widely conserved across species and is essential in all eukaryotes and in some bacteria under stress conditions. To facilitate protein remodeling, bacterial Hsp90 collaborates with the Hsp70 molecular chaperone and its cochaperones. In contrast, the mechanism of protein remodeling performed by eukaryotic Hsp90 is more complex, involving more than 20 Hsp90 cochaperones in addition to Hsp70 and its cochaperones. In this review, we focus on recent progress toward understanding the basic mechanisms of bacterial Hsp90-mediated protein remodeling and the collaboration between Hsp90 and Hsp70. We describe the universally conserved structure and conformational dynamics of these chaperones and their interactions with one another and with client proteins. The physiological roles of Hsp90 in Escherichia coli and other bacteria are also discussed. We anticipate that the information gained from exploring the mechanism of the bacterial chaperone system will provide a framework for understanding the more complex eukaryotic Hsp90 system. Expected final online publication date for the Annual Review of Microbiology, Volume 75 is October 2021. Please see http://www.annualreviews.org/page/journal/pubdates for revised estimates.
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Affiliation(s)
- Sue Wickner
- Laboratory of Molecular Biology, National Cancer Institute, National Institutes of Health, Bethesda, Maryland 20892, USA;
| | - Thu-Lan Lily Nguyen
- Laboratory of Molecular Biology, National Cancer Institute, National Institutes of Health, Bethesda, Maryland 20892, USA;
| | - Olivier Genest
- Aix-Marseille Université, CNRS, Laboratoire de Bioénergétique et Ingénierie des Protéines, Institut de Microbiologie de la Méditerranée, 13009 Marseille, France;
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30
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Dekker FA, Rüdiger SGD. The Mitochondrial Hsp90 TRAP1 and Alzheimer's Disease. Front Mol Biosci 2021; 8:697913. [PMID: 34222342 PMCID: PMC8249562 DOI: 10.3389/fmolb.2021.697913] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2021] [Accepted: 06/02/2021] [Indexed: 12/31/2022] Open
Abstract
Alzheimer’s Disease (AD) is the most common form of dementia, characterised by intra- and extracellular protein aggregation. In AD, the cellular protein quality control (PQC) system is derailed and fails to prevent the formation of these aggregates. Especially the mitochondrial paralogue of the conserved Hsp90 chaperone class, tumour necrosis factor receptor-associated protein 1 (TRAP1), is strongly downregulated in AD, more than other major PQC factors. Here, we review molecular mechanism and cellular function of TRAP1 and subsequently discuss possible links to AD. TRAP1 is an interesting paradigm for the Hsp90 family, as it chaperones proteins with vital cellular function, despite not being regulated by any of the co-chaperones that drive its cytosolic paralogues. TRAP1 encloses late folding intermediates in a non-active state. Thereby, it is involved in the assembly of the electron transport chain, and it favours the switch from oxidative phosphorylation to glycolysis. Another key function is that it ensures mitochondrial integrity by regulating the mitochondrial pore opening through Cyclophilin D. While it is still unclear whether TRAP1 itself is a driver or a passenger in AD, it might be a guide to identify key factors initiating neurodegeneration.
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Affiliation(s)
- Françoise A Dekker
- Medicinal Chemistry, Amsterdam Institute of Molecular and Life Sciences (AIMMS), Vrije Universiteit Amsterdam, Amsterdam, Netherlands.,Cellular Protein Chemistry, Bijvoet Center for Biomolecular Research, Utrecht University, Utrecht, Netherlands.,Science for Life, Utrecht University, Utrecht, Netherlands
| | - Stefan G D Rüdiger
- Cellular Protein Chemistry, Bijvoet Center for Biomolecular Research, Utrecht University, Utrecht, Netherlands.,Science for Life, Utrecht University, Utrecht, Netherlands
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31
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Biebl MM, Riedl M, Buchner J. Hsp90 Co-chaperones Form Plastic Genetic Networks Adapted to Client Maturation. Cell Rep 2021; 32:108063. [PMID: 32846121 DOI: 10.1016/j.celrep.2020.108063] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2020] [Revised: 07/01/2020] [Accepted: 08/03/2020] [Indexed: 11/18/2022] Open
Abstract
Heat shock protein 90 (Hsp90) is a molecular chaperone regulating the activity of diverse client proteins together with a plethora of different co-chaperones. Whether these functionally cooperate has remained enigmatic. We analyze all double mutants of 11 Saccharomyces cerevisiae Hsp90 co-chaperones in vivo concerning effects on cell physiology and the activation of specific client proteins. We find that client activation is supported by a genetic network with weak epistasis between most co-chaperones and a few modules with strong genetic interactions. These include an epistatic module regulating protein translation and dedicated epistatic networks for specific clients. For kinases, the bridging of Hsp70 and Hsp90 by Sti1/Hop is essential for activation, whereas for steroid hormone receptors, an epistatic module regulating their dwell time on Hsp90 is crucial, highlighting the specific needs of different clients. Thus, the Hsp90 system is characterized by plastic co-chaperone networks fine-tuning the conformational processing in a client-specific manner.
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Affiliation(s)
- Maximilian M Biebl
- Center for Integrated Protein Science at the Department of Chemistry, Technische Universität München, Lichtenbergstrasse 4, 85747 Garching, Germany
| | - Maximilian Riedl
- Center for Integrated Protein Science at the Department of Chemistry, Technische Universität München, Lichtenbergstrasse 4, 85747 Garching, Germany
| | - Johannes Buchner
- Center for Integrated Protein Science at the Department of Chemistry, Technische Universität München, Lichtenbergstrasse 4, 85747 Garching, Germany.
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Jin Y, Kotler JLM, Wang S, Huang B, Halpin JC, Street TO. The ER Chaperones BiP and Grp94 Regulate the Formation of Insulin-Like Growth Factor 2 (IGF2) Oligomers. J Mol Biol 2021; 433:166963. [PMID: 33811917 DOI: 10.1016/j.jmb.2021.166963] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2020] [Revised: 03/07/2021] [Accepted: 03/22/2021] [Indexed: 01/05/2023]
Abstract
While cytosolic Hsp90 chaperones have been extensively studied, less is known about how the ER Hsp90 paralog Grp94 recognizes clients and influences client folding. Here, we examine how Grp94 and the ER Hsp70 paralog, BiP, influence the folding of insulin-like growth factor 2 (IGF2), an established client protein of Grp94. ProIGF2 is composed of a disulfide-bonded insulin-like hormone and a C-terminal E-peptide that has sequence characteristics of an intrinsically disordered region. BiP and Grp94 have a minimal influence on folding whereby both chaperones slow proIGF2 folding and do not substantially alter the disulfide-bonded folding intermediates, suggesting that BiP and Grp94 may have an additional influence unrelated to proIGF2 folding. Indeed, we made the unexpected discovery that the E-peptide region allows proIGF2 to form dynamic oligomers. ProIGF2 oligomers can transition from a dynamic state that is capable of exchanging monomers to an irreversibly aggregated state, providing a plausible role for BiP and Grp94 in regulating proIGF2 oligomerization. In contrast to the modest influence on folding, BiP and Grp94 have a stronger influence on proIGF2 oligomerization and these chaperones exert counteracting effects. BiP suppresses proIGF2 oligomerization while Grp94 can enhance proIGF2 oligomerization in a nucleotide-dependent manner. We propose that BiP and Grp94 regulate the assembly and dynamic behavior of proIGF2 oligomers, although the biological role of proIGF2 oligomerization is not yet known.
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Affiliation(s)
- Yi Jin
- Department of Biochemistry, Brandeis University, Waltham, MA 02454, USA
| | - Judy L M Kotler
- Department of Biochemistry, Brandeis University, Waltham, MA 02454, USA
| | - Shiyu Wang
- Department of Biology, Brandeis University, Waltham, MA 02454, USA
| | - Bin Huang
- Department of Biochemistry, Brandeis University, Waltham, MA 02454, USA
| | - Jackson C Halpin
- Department of Biochemistry, Brandeis University, Waltham, MA 02454, USA
| | - Timothy O Street
- Department of Biochemistry, Brandeis University, Waltham, MA 02454, USA.
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Zhao S, Li X, Lu P, Li X, Sun M, Wang H. The Role of the Signaling Pathways Involved in the Effects of Hydrogen Sulfide on Endoplasmic Reticulum Stress. Front Cell Dev Biol 2021; 9:646723. [PMID: 33816495 PMCID: PMC8017186 DOI: 10.3389/fcell.2021.646723] [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: 12/28/2020] [Accepted: 03/02/2021] [Indexed: 02/05/2023] Open
Abstract
Endoplasmic reticulum (ER) is a kind of organelle with multiple functions including protein synthesis, modification and folding, calcium storage, and lipid synthesis. Under stress conditions, ER homeostasis is disrupted, which is defined as ER stress (ERS). The accumulation of unfolded proteins in the ER triggers a stable signaling network named unfolded protein response (UPR). Hydrogen sulfide is an important signal molecule regulating various physiological and pathological processes. Recent studies have shown that H2S plays an important role in many diseases by affecting ERS, but its mechanism, especially the signaling pathways, is not fully understood. Therefore, in this review, we summarize the recent studies about the signaling pathways involved in the effects of H2S on ERS in diseases to provide theoretical reference for the related in-depth researches.
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Affiliation(s)
- Shizhen Zhao
- Institute of Biomedical Informatics, Bioinformatics Center, School of Basic Medical Sciences, Henan University, Kaifeng, China
| | - Xinping Li
- Institute of Biomedical Informatics, Bioinformatics Center, School of Basic Medical Sciences, Henan University, Kaifeng, China
| | - Ping Lu
- Key Laboratory of Natural Medicine and Immuno-Engineering, Henan University, Kaifeng, China
| | - Xiaotian Li
- Institute of Biomedical Informatics, Bioinformatics Center, School of Basic Medical Sciences, Henan University, Kaifeng, China
| | - Mingfei Sun
- The First Affiliated Hospital of Henan University, Kaifeng, China
| | - Honggang Wang
- Institute of Biomedical Informatics, Bioinformatics Center, School of Basic Medical Sciences, Henan University, Kaifeng, China
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34
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Systematically Deciphering the Pharmacological Mechanism of Fructus Aurantii via Network Pharmacology. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE 2021; 2021:6236135. [PMID: 33542744 PMCID: PMC7843179 DOI: 10.1155/2021/6236135] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/20/2020] [Revised: 11/26/2020] [Accepted: 12/28/2020] [Indexed: 12/17/2022]
Abstract
Fructus Aurantii (FA) is a traditional herbal medicine that has been widely used for thousands of years in China and possesses a variety of pharmacological effects. However, the active ingredients in FA and the potential mechanisms of its therapeutic effects have not been fully explored. Here, we applied a network pharmacology approach to explore the potential mechanisms of FA. We identified 5 active compounds from FA and a total of 209 potential targets to construct a protein-protein interaction (PPI) network. Prostaglandin G/H synthase 2 (PTGS2), heat shock protein 90 (HSP90), cell division protein kinase 6 (CDK6), caspase 3 (CASP3), apoptosis regulator Bcl-2 (Bcl-2), and matrix metalloproteinase-9 (MMP9) were identified as key targets of FA in the treatment of multiple diseases. Gene ontology (GO) enrichment demonstrated that FA was highly related to transcription initiation from RNA polymerase II promoter, DNA-templated transcription, positive regulation of transcription, regulation of apoptosis process, and regulation of cell proliferation. Various signaling pathways involved in the treatment of FA were identified, including pathways in cancer and pathways specifically related to prostate cancer, colorectal cancer, PI3K-Akt, apoptosis, and non-small-cell lung cancer. TP53, AKT1, caspase 3, MAPK3, PTGS2, and BAX/BCL2 were related key targets in the identified enriched pathways and the PPI network. In addition, our molecular docking results showed that the bioactive compounds in FA can tightly bind to most target proteins. This article reveals via network pharmacology research the possible mechanism(s) by which FA exerts its activities in the treatment of various diseases and lays a foundation for further experiments and the development of a rational clinical application of FA.
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35
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Corigliano MG, Sander VA, Sánchez López EF, Ramos Duarte VA, Mendoza Morales LF, Angel SO, Clemente M. Heat Shock Proteins 90 kDa: Immunomodulators and Adjuvants in Vaccine Design Against Infectious Diseases. Front Bioeng Biotechnol 2021; 8:622186. [PMID: 33553125 PMCID: PMC7855457 DOI: 10.3389/fbioe.2020.622186] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2020] [Accepted: 12/15/2020] [Indexed: 02/03/2023] Open
Abstract
Heat shock proteins 90 kDa (Hsp90s) were originally identified as stress-responsive proteins and described to participate in several homeostatic processes. Additionally, extracellular Hsp90s have the ability to bind to surface receptors and activate cellular functions related to immune response (cytokine secretion, cell maturation, and antigen presentation), making them very attractive to be studied as immunomodulators. In this context, Hsp90s are proposed as new adjuvants in the design of novel vaccine formulations that require the induction of a cell-mediated immune response to prevent infectious diseases. In this review, we summarized the adjuvant properties of Hsp90s when they are either alone, complexed, or fused to a peptide to add light to the knowledge of Hsp90s as carriers and adjuvants in the design of vaccines against infectious diseases. Besides, we also discuss the mechanisms by which Hsp90s activate and modulate professional antigen-presenting cells.
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Affiliation(s)
- Mariana G Corigliano
- Unidad Biotecnológica 6-UB6, Laboratorio de Molecular Farming y Vacunas, INTECH, UNSAM-CONICET, Chascomús, Argentina
| | - Valeria A Sander
- Unidad Biotecnológica 6-UB6, Laboratorio de Molecular Farming y Vacunas, INTECH, UNSAM-CONICET, Chascomús, Argentina
| | - Edwin F Sánchez López
- Unidad Biotecnológica 6-UB6, Laboratorio de Molecular Farming y Vacunas, INTECH, UNSAM-CONICET, Chascomús, Argentina
| | - Víctor A Ramos Duarte
- Unidad Biotecnológica 6-UB6, Laboratorio de Molecular Farming y Vacunas, INTECH, UNSAM-CONICET, Chascomús, Argentina
| | - Luisa F Mendoza Morales
- Unidad Biotecnológica 6-UB6, Laboratorio de Molecular Farming y Vacunas, INTECH, UNSAM-CONICET, Chascomús, Argentina
| | - Sergio O Angel
- Unidad Biotecnológica 2-UB2, Laboratorio de Parasitología Molecular, INTECH, UNSAM-CONICET, Chascomús, Argentina
| | - Marina Clemente
- Unidad Biotecnológica 6-UB6, Laboratorio de Molecular Farming y Vacunas, INTECH, UNSAM-CONICET, Chascomús, Argentina
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36
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The Hsp70-Hsp90 go-between Hop/Stip1/Sti1 is a proteostatic switch and may be a drug target in cancer and neurodegeneration. Cell Mol Life Sci 2021; 78:7257-7273. [PMID: 34677645 PMCID: PMC8629791 DOI: 10.1007/s00018-021-03962-z] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2021] [Revised: 08/24/2021] [Accepted: 09/24/2021] [Indexed: 01/17/2023]
Abstract
The Hsp70 and Hsp90 molecular chaperone systems are critical regulators of protein homeostasis (proteostasis) in eukaryotes under normal and stressed conditions. The Hsp70 and Hsp90 systems physically and functionally interact to ensure cellular proteostasis. Co-chaperones interact with Hsp70 and Hsp90 to regulate and to promote their molecular chaperone functions. Mammalian Hop, also called Stip1, and its budding yeast ortholog Sti1 are eukaryote-specific co-chaperones, which have been thought to be essential for substrate ("client") transfer from Hsp70 to Hsp90. Substrate transfer is facilitated by the ability of Hop to interact simultaneously with Hsp70 and Hsp90 as part of a ternary complex. Intriguingly, in prokaryotes, which lack a Hop ortholog, the Hsp70 and Hsp90 orthologs interact directly. Recent evidence shows that eukaryotic Hsp70 and Hsp90 can also form a prokaryote-like binary chaperone complex in the absence of Hop, and that this binary complex displays enhanced protein folding and anti-aggregation activities. The canonical Hsp70-Hop-Hsp90 ternary chaperone complex is essential for optimal maturation and stability of a small subset of clients, including the glucocorticoid receptor, the tyrosine kinase v-Src, and the 26S/30S proteasome. Whereas many cancers have increased levels of Hop, the levels of Hop decrease in the aging human brain. Since Hop is not essential in all eukaryotic cells and organisms, tuning Hop levels or activity might be beneficial for the treatment of cancer and neurodegeneration.
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37
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The conformation-specific Hsp90 inhibition interferes with the oncogenic RAF kinase adaptation and triggers premature cellular senescence, hence, acts as a tumor suppressor mechanism. BIOCHIMICA ET BIOPHYSICA ACTA-MOLECULAR CELL RESEARCH 2020; 1868:118943. [PMID: 33359710 DOI: 10.1016/j.bbamcr.2020.118943] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 07/01/2020] [Revised: 11/23/2020] [Accepted: 12/18/2020] [Indexed: 12/28/2022]
Abstract
Cancer emergence is associated with cellular adaptations to altered signal transduction mechanisms arbitrated by mutated kinases. Since conventional kinase inhibitors can exhibit certain limitations to such kinase adaptations, overcoming kinase adaptation for cancer treatment gains importance. The cancer chaperone, Hsp90, is implicated in the conformational maturation and functional stabilization of mutated gene products. However, its role in kinase adaptations is not explored in detail. Therefore, the present study aims to understand the mechanisms of Hsp90-dependent kinase adaptation and develop a novel antitumor strategy. We chose malignant human lung cancer cells to demonstrate Hsp90-dependent RAF oncogene adaptation. We show that RAF oncogene adaptations were predominant over wild type RAF and are facilitated by conformation-specific Hsp90. Consequently, the conformation-specific Hsp90 inhibitor, 17AAG, interfered with oncogenic RAF stability and function and inhibited cell proliferation. The enforced cytostasis further triggered premature cellular senescence and acted as an efficient and irreversible tumor suppressor mechanism. Our results also display that oncogenic RAF interactions with Hsp90 require the middle-charged region of the chaperone. Our mice xenografts revealed that 17AAG pretreated tumor cells lost their ability to proliferate and metastasize in vivo. In summary, we demonstrated Hsp90-dependent kinase adaptation in tumor cells and the effect of Hsp90 inhibition in triggering premature senescence to interfere with the tumor progression. Our findings are of both biological relevance and clinical importance.
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38
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Bhattacharya K, Weidenauer L, Luengo TM, Pieters EC, Echeverría PC, Bernasconi L, Wider D, Sadian Y, Koopman MB, Villemin M, Bauer C, Rüdiger SGD, Quadroni M, Picard D. The Hsp70-Hsp90 co-chaperone Hop/Stip1 shifts the proteostatic balance from folding towards degradation. Nat Commun 2020; 11:5975. [PMID: 33239621 PMCID: PMC7688965 DOI: 10.1038/s41467-020-19783-w] [Citation(s) in RCA: 63] [Impact Index Per Article: 15.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2020] [Accepted: 10/30/2020] [Indexed: 02/06/2023] Open
Abstract
Hop/Stip1/Sti1 is thought to be essential as a co-chaperone to facilitate substrate transfer between the Hsp70 and Hsp90 molecular chaperones. Despite this proposed key function for protein folding and maturation, it is not essential in a number of eukaryotes and bacteria lack an ortholog. We set out to identify and to characterize its eukaryote-specific function. Human cell lines and the budding yeast with deletions of the Hop/Sti1 gene display reduced proteasome activity due to inefficient capping of the core particle with regulatory particles. Unexpectedly, knock-out cells are more proficient at preventing protein aggregation and at promoting protein refolding. Without the restraint by Hop, a more efficient folding activity of the prokaryote-like Hsp70-Hsp90 complex, which can also be demonstrated in vitro, compensates for the proteasomal defect and ensures the proteostatic equilibrium. Thus, cells may act on the level and/or activity of Hop to shift the proteostatic balance between folding and degradation. Hop, also known as Stip1 or Sti1, facilitates substrate transfer between the Hsp70 and Hsp90 molecular chaperones. Characterization of proteostasis-related pathways in STIP1 knock-out cell lines reveals that in eukaryotes Stip1 modulates the balance between protein folding and degradation.
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Affiliation(s)
- Kaushik Bhattacharya
- Département de Biologie Cellulaire, Université de Genève, Sciences III, 1211, Genève 4, Switzerland
| | - Lorenz Weidenauer
- Protein Analysis Facility, Center for Integrative Genomics, Université de Lausanne, 1015, Lausanne, Switzerland
| | - Tania Morán Luengo
- Cellular Protein Chemistry, Bijvoet Center for Biomolecular Research, Utrecht University, 3584, CH, Utrecht, The Netherlands.,Science for Life, Utrecht University, 3584, CH, Utrecht, The Netherlands
| | - Ellis C Pieters
- Cellular Protein Chemistry, Bijvoet Center for Biomolecular Research, Utrecht University, 3584, CH, Utrecht, The Netherlands.,Science for Life, Utrecht University, 3584, CH, Utrecht, The Netherlands
| | - Pablo C Echeverría
- Département de Biologie Cellulaire, Université de Genève, Sciences III, 1211, Genève 4, Switzerland.,European Association for the Study of the Liver, 1203, Genève, Switzerland
| | - Lilia Bernasconi
- Département de Biologie Cellulaire, Université de Genève, Sciences III, 1211, Genève 4, Switzerland
| | - Diana Wider
- Département de Biologie Cellulaire, Université de Genève, Sciences III, 1211, Genève 4, Switzerland
| | - Yashar Sadian
- Bioimaging Center, Université de Genève, Sciences II, 1211, Genève 4, Switzerland
| | - Margreet B Koopman
- Cellular Protein Chemistry, Bijvoet Center for Biomolecular Research, Utrecht University, 3584, CH, Utrecht, The Netherlands.,Science for Life, Utrecht University, 3584, CH, Utrecht, The Netherlands
| | - Matthieu Villemin
- Département de Biologie Cellulaire, Université de Genève, Sciences III, 1211, Genève 4, Switzerland
| | - Christoph Bauer
- Bioimaging Center, Université de Genève, Sciences II, 1211, Genève 4, Switzerland
| | - Stefan G D Rüdiger
- Cellular Protein Chemistry, Bijvoet Center for Biomolecular Research, Utrecht University, 3584, CH, Utrecht, The Netherlands.,Science for Life, Utrecht University, 3584, CH, Utrecht, The Netherlands
| | - Manfredo Quadroni
- Protein Analysis Facility, Center for Integrative Genomics, Université de Lausanne, 1015, Lausanne, Switzerland
| | - Didier Picard
- Département de Biologie Cellulaire, Université de Genève, Sciences III, 1211, Genève 4, Switzerland.
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Wang H, Lallemang M, Hermann B, Wallin C, Loch R, Blanc A, Balzer BN, Hugel T, Luo J. ATP Impedes the Inhibitory Effect of Hsp90 on Aβ 40 Fibrillation. J Mol Biol 2020; 433:166717. [PMID: 33220262 DOI: 10.1016/j.jmb.2020.11.016] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2020] [Revised: 10/23/2020] [Accepted: 11/11/2020] [Indexed: 12/28/2022]
Abstract
Heat shock protein 90 (Hsp90) is a molecular chaperone that assists protein folding in an Adenosine triphosphate (ATP)-dependent way. Hsp90 has been reported to interact with Alzheimeŕs disease associated amyloid-β (Aβ) peptides and to suppress toxic oligomer- and fibril formation. However, the mechanism remains largely unclear. Here we use a combination of atomic force microscopy (AFM) imaging, circular dichroism (CD) spectroscopy and biochemical analysis to quantify this interaction and put forward a microscopic picture including rate constants for the different transitions towards fibrillation. We show that Hsp90 binds to Aβ40 monomers weakly but inhibits Aβ40 from growing into fibrils at substoichiometric concentrations. ATP impedes this interaction, presumably by modulating Hsp90's conformational dynamics and reducing its hydrophobic surface. Altogether, these results might indicate alternative ways to prevent Aβ40 fibrillation by manipulating chaperones that are already abundant in the brain.
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Affiliation(s)
- Hongzhi Wang
- Department of Biology and Chemistry, Paul Scherrer Institute, 5232 Villigen, Switzerland
| | - Max Lallemang
- Institute of Physical Chemistry, University of Freiburg, Albertstraße 21, 79104 Freiburg, Germany; Cluster of Excellence livMatS @ FIT - Freiburg Center for Interactive Materials and Bioinspired Technologies, University of Freiburg, Georges-Köhler-Allee 105, D-79110 Freiburg, Germany
| | - Bianca Hermann
- Institute of Physical Chemistry, University of Freiburg, Albertstraße 21, 79104 Freiburg, Germany
| | - Cecilia Wallin
- Department of Biochemistry and Biophysics, Stockholm University, 10691 Stockholm, Sweden
| | - Rolf Loch
- Department of Biology and Chemistry, Paul Scherrer Institute, 5232 Villigen, Switzerland
| | - Alain Blanc
- Center for Radiopharmaceutical Sciences, Paul Scherrer Institute, 5232 Villigen, Switzerland
| | - Bizan N Balzer
- Institute of Physical Chemistry, University of Freiburg, Albertstraße 21, 79104 Freiburg, Germany; Cluster of Excellence livMatS @ FIT - Freiburg Center for Interactive Materials and Bioinspired Technologies, University of Freiburg, Georges-Köhler-Allee 105, D-79110 Freiburg, Germany
| | - Thorsten Hugel
- Institute of Physical Chemistry, University of Freiburg, Albertstraße 21, 79104 Freiburg, Germany; Cluster of Excellence livMatS @ FIT - Freiburg Center for Interactive Materials and Bioinspired Technologies, University of Freiburg, Georges-Köhler-Allee 105, D-79110 Freiburg, Germany
| | - Jinghui Luo
- Department of Biology and Chemistry, Paul Scherrer Institute, 5232 Villigen, Switzerland.
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40
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Toribio R, Mangano S, Fernández-Bautista N, Muñoz A, Castellano MM. HOP, a Co-chaperone Involved in Response to Stress in Plants. FRONTIERS IN PLANT SCIENCE 2020; 11:591940. [PMID: 33193548 PMCID: PMC7658193 DOI: 10.3389/fpls.2020.591940] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/05/2020] [Accepted: 10/06/2020] [Indexed: 05/25/2023]
Abstract
Protein folding is an essential step for protein functionality. In eukaryotes this process is carried out by multiple chaperones that act in a cooperative manner to maintain the proteome homeostasis. Some of these chaperones are assisted during protein folding by different co-chaperones. One of these co-chaperones is HOP, the HSP70-HSP90 organizing protein. This assistant protein, due to its importance, has been deeply analyzed in other eukaryotes, but its function has only recently started to be envisaged in plants. In this kingdom, the role of HOP has been associated to plant response to different cellular, biotic and abiotic stresses. In this article, we analyze the current knowledge about HOP in eukaryotes, paying a special attention to the recently described roles of HOP in plants. In addition, we discuss the recent breakthroughs in the field and the possible new avenues for the study of plant HOP proteins in the future.
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Affiliation(s)
- René Toribio
- Centro de Biotecnología y Genómica de Plantas, Instituto Nacional de Investigación y Tecnología Agraria y Alimentaria (INIA), Universidad Politécnica de Madrid (UPM), Madrid, Spain
| | - Silvina Mangano
- Centro de Biotecnología y Genómica de Plantas, Instituto Nacional de Investigación y Tecnología Agraria y Alimentaria (INIA), Universidad Politécnica de Madrid (UPM), Madrid, Spain
| | - Nuria Fernández-Bautista
- Centro de Biotecnología y Genómica de Plantas, Instituto Nacional de Investigación y Tecnología Agraria y Alimentaria (INIA), Universidad Politécnica de Madrid (UPM), Madrid, Spain
| | - Alfonso Muñoz
- Departamento de Botánica, Ecología y Fisiología Vegetal, Universidad de Córdoba, Córdoba, Spain
| | - M. Mar Castellano
- Centro de Biotecnología y Genómica de Plantas, Instituto Nacional de Investigación y Tecnología Agraria y Alimentaria (INIA), Universidad Politécnica de Madrid (UPM), Madrid, Spain
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41
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A Single Site Phosphorylation on Hsp82 Ensures Cell Survival during Starvation in Saccharomyces cerevisiae. J Mol Biol 2020; 432:5809-5824. [PMID: 32920053 DOI: 10.1016/j.jmb.2020.09.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2020] [Revised: 09/04/2020] [Accepted: 09/04/2020] [Indexed: 11/22/2022]
Abstract
Unicellular organisms live under diverse stressful conditions and must respond and adapt quickly to these stresses. When these stresses persist, cells favor a transition to quiescence. There are changes to many processes when cells begin their entry into quiescence. It has been reported that Hsp82 plays an important role in several such processes, and its distribution and activity change according to nutrient conditions. In this study, we found that the subcellular distribution of Hsp82 is regulated by its co-chaperone Ppt1. Under starvation conditions, Ppt1 expression was significantly reduced by a TOR-independent pathway. Furthermore, we found that Ppt1 regulates Hsp82 distribution in the cytoplasm and nucleus by dephosphorylating the S485 residue on Hsp82. The Hsp82S485A strain has impaired membrane-related protein transport, and its cell size did not become larger in quiescence compared to log phase, resulting in failure to survive during starvation.
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42
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Xu H. ATP-Driven Nonequilibrium Activation of Kinase Clients by the Molecular Chaperone Hsp90. Biophys J 2020; 119:1538-1549. [PMID: 33038305 DOI: 10.1016/j.bpj.2020.08.038] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2020] [Revised: 08/12/2020] [Accepted: 08/24/2020] [Indexed: 11/15/2022] Open
Abstract
The molecular chaperone 90-kDa heat-shock protein (Hsp90) assists the late-stage folding and activation of diverse types of protein substrates (called clients), including many kinases. Previous studies have established that the Hsp90 homodimer undergoes an ATP-driven cycle through open and closed conformations. Here, I propose a model of client activation by Hsp90 that predicts that this cycle enables Hsp90 to use ATP energy to drive a client out of thermodynamic equilibrium toward its active conformation. My model assumes that an Hsp90-bound client can transition between a deactivating conformation and an activating conformation. It suggests that the cochaperone Cdc37 aids Hsp90 to activate kinase clients by differentiating between these two intermediate conformations. My model makes experimentally testable predictions, including how modulating the stepwise kinetics of the Hsp90 cycle-for example, by various cochaperones-affects the activation of different clients. My model may inform client-specific and cell-type-specific therapeutic intervention of Hsp90-mediated protein activation.
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Affiliation(s)
- Huafeng Xu
- Silicon Therapeutics, Boston, Massachusetts.
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43
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Masser AE, Ciccarelli M, Andréasson C. Hsf1 on a leash - controlling the heat shock response by chaperone titration. Exp Cell Res 2020; 396:112246. [PMID: 32861670 DOI: 10.1016/j.yexcr.2020.112246] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2020] [Revised: 08/14/2020] [Accepted: 08/22/2020] [Indexed: 01/06/2023]
Abstract
Heat shock factor 1 (Hsf1) is an ancient transcription factor that monitors protein homeostasis (proteostasis) and counteracts disturbances by triggering a transcriptional programme known as the heat shock response (HSR). The HSR is transiently activated and upregulates the expression of core proteostasis genes, including chaperones. Dysregulation of Hsf1 and its target genes are associated with disease; cancer cells rely on a constitutively active Hsf1 to promote rapid growth and malignancy, whereas Hsf1 hypoactivation in neurodegenerative disorders results in formation of toxic aggregates. These central but opposing roles highlight the importance of understanding the underlying molecular mechanisms that control Hsf1 activity. According to current understanding, Hsf1 is maintained latent by chaperone interactions but proteostasis perturbations titrate chaperone availability as a result of chaperone sequestration by misfolded proteins. Liberated and activated Hsf1 triggers a negative feedback loop by inducing the expression of key chaperones. Until recently, Hsp90 has been highlighted as the central negative regulator of Hsf1 activity. In this review, we focus on recent advances regarding how the Hsp70 chaperone controls Hsf1 activity and in addition summarise several additional layers of activity control.
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Affiliation(s)
- Anna E Masser
- Department of Molecular Biosciences, The Wenner-Gren Institute, Stockholm University, S-106 91, Stockholm, Sweden
| | - Michela Ciccarelli
- Department of Molecular Biosciences, The Wenner-Gren Institute, Stockholm University, S-106 91, Stockholm, Sweden
| | - Claes Andréasson
- Department of Molecular Biosciences, The Wenner-Gren Institute, Stockholm University, S-106 91, Stockholm, Sweden.
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44
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Bocai NI, Marcora MS, Belfiori-Carrasco LF, Morelli L, Castaño EM. Endoplasmic Reticulum Stress in Tauopathies: Contrasting Human Brain Pathology with Cellular and Animal Models. J Alzheimers Dis 2020; 68:439-458. [PMID: 30775999 DOI: 10.3233/jad-181021] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
The accumulation and spreading of protein tau in the human brain are major features of neurodegenerative disorders known as tauopathies. In addition to several subcellular abnormalities, tau aggregation within neurons seems capable of triggering endoplasmic reticulum (ER) stress and the consequent unfolded protein response (UPR). In metazoans, full activation of a complex ER-UPR network may restore proteostasis and ER function or, if stress cannot be solved, commit cells to apoptosis. Due to these alternative outcomes (survival or death), the pharmacological manipulation of ER-UPR has become the focus of potential therapies in many human diseases, including tauopathies. Here we update and analyze the experimental data from human brain, cellular, and animal models linking tau accumulation and ER-UPR. We further discuss mechanistic aspects and put the ER-UPR into perspective as a possible therapeutic target in this group of diseases.
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Affiliation(s)
- Nadia I Bocai
- Laboratory of Amyloidosis and Neurodegeneration, Fundación Instituto Leloir, Buenos Aires, Argentina.,Instituto de Investigaciones Bioquímicas de Buenos Aires, Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Buenos Aires, Argentina
| | - María S Marcora
- Laboratory of Amyloidosis and Neurodegeneration, Fundación Instituto Leloir, Buenos Aires, Argentina.,Instituto de Investigaciones Bioquímicas de Buenos Aires, Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Buenos Aires, Argentina
| | - Lautaro F Belfiori-Carrasco
- Laboratory of Amyloidosis and Neurodegeneration, Fundación Instituto Leloir, Buenos Aires, Argentina.,Instituto de Investigaciones Bioquímicas de Buenos Aires, Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Buenos Aires, Argentina
| | - Laura Morelli
- Laboratory of Amyloidosis and Neurodegeneration, Fundación Instituto Leloir, Buenos Aires, Argentina.,Instituto de Investigaciones Bioquímicas de Buenos Aires, Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Buenos Aires, Argentina
| | - Eduardo M Castaño
- Laboratory of Amyloidosis and Neurodegeneration, Fundación Instituto Leloir, Buenos Aires, Argentina.,Instituto de Investigaciones Bioquímicas de Buenos Aires, Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Buenos Aires, Argentina
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45
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Tichá T, Samakovli D, Kuchařová A, Vavrdová T, Šamaj J. Multifaceted roles of HEAT SHOCK PROTEIN 90 molecular chaperones in plant development. JOURNAL OF EXPERIMENTAL BOTANY 2020; 71:3966-3985. [PMID: 32293686 DOI: 10.1093/jxb/eraa177] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/27/2020] [Accepted: 04/06/2020] [Indexed: 05/20/2023]
Abstract
HEAT SHOCK PROTEINS 90 (HSP90s) are molecular chaperones that mediate correct folding and stability of many client proteins. These chaperones act as master molecular hubs involved in multiple aspects of cellular and developmental signalling in diverse organisms. Moreover, environmental and genetic perturbations affect both HSP90s and their clients, leading to alterations of molecular networks determining respectively plant phenotypes and genotypes and contributing to a broad phenotypic plasticity. Although HSP90 interaction networks affecting the genetic basis of phenotypic variation and diversity have been thoroughly studied in animals, such studies are just starting to emerge in plants. Here, we summarize current knowledge and discuss HSP90 network functions in plant development and cellular homeostasis.
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Affiliation(s)
- Tereza Tichá
- Department of Cell Biology, Centre of the Region Haná for Biotechnological and Agricultural Research, Faculty of Science, Palacký University Olomouc, Olomouc, Czech Republic
| | - Despina Samakovli
- Department of Cell Biology, Centre of the Region Haná for Biotechnological and Agricultural Research, Faculty of Science, Palacký University Olomouc, Olomouc, Czech Republic
| | - Anna Kuchařová
- Department of Cell Biology, Centre of the Region Haná for Biotechnological and Agricultural Research, Faculty of Science, Palacký University Olomouc, Olomouc, Czech Republic
| | - Tereza Vavrdová
- Department of Cell Biology, Centre of the Region Haná for Biotechnological and Agricultural Research, Faculty of Science, Palacký University Olomouc, Olomouc, Czech Republic
| | - Jozef Šamaj
- Department of Cell Biology, Centre of the Region Haná for Biotechnological and Agricultural Research, Faculty of Science, Palacký University Olomouc, Olomouc, Czech Republic
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46
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Taldone T, Wang T, Rodina A, Pillarsetty NVK, Digwal CS, Sharma S, Yan P, Joshi S, Pagare PP, Bolaender A, Roboz GJ, Guzman ML, Chiosis G. A Chemical Biology Approach to the Chaperome in Cancer-HSP90 and Beyond. Cold Spring Harb Perspect Biol 2020; 12:a034116. [PMID: 30936118 PMCID: PMC6773535 DOI: 10.1101/cshperspect.a034116] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Cancer is often associated with alterations in the chaperome, a collection of chaperones, cochaperones, and other cofactors. Changes in the expression levels of components of the chaperome, in the interaction strength among chaperome components, alterations in chaperome constituency, and in the cellular location of chaperome members, are all hallmarks of cancer. Here we aim to provide an overview on how chemical biology has played a role in deciphering such complexity in the biology of the chaperome in cancer and in other diseases. The focus here is narrow and on pathologic changes in the chaperome executed by enhancing the interaction strength between components of distinct chaperome pathways, specifically between those of HSP90 and HSP70 pathways. We will review chemical tools and chemical probe-based assays, with a focus on HSP90. We will discuss how kinetic binding, not classical equilibrium binding, is most appropriate in the development of drugs and probes for the chaperome in disease. We will then present our view on how chaperome inhibitors may become potential drugs and diagnostics in cancer.
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Affiliation(s)
- Tony Taldone
- Chemical Biology Program, Memorial Sloan Kettering Cancer Center, New York, New York 10065
| | - Tai Wang
- Chemical Biology Program, Memorial Sloan Kettering Cancer Center, New York, New York 10065
| | - Anna Rodina
- Chemical Biology Program, Memorial Sloan Kettering Cancer Center, New York, New York 10065
| | | | - Chander S Digwal
- Chemical Biology Program, Memorial Sloan Kettering Cancer Center, New York, New York 10065
| | - Sahil Sharma
- Chemical Biology Program, Memorial Sloan Kettering Cancer Center, New York, New York 10065
| | - Pengrong Yan
- Chemical Biology Program, Memorial Sloan Kettering Cancer Center, New York, New York 10065
| | - Suhasini Joshi
- Chemical Biology Program, Memorial Sloan Kettering Cancer Center, New York, New York 10065
| | - Piyusha P Pagare
- Chemical Biology Program, Memorial Sloan Kettering Cancer Center, New York, New York 10065
| | - Alexander Bolaender
- Chemical Biology Program, Memorial Sloan Kettering Cancer Center, New York, New York 10065
| | - Gail J Roboz
- Division of Hematology and Medical Oncology, Leukemia Program, Weill Cornell Medicine/New York-Presbyterian Hospital, New York, New York 10065
| | - Monica L Guzman
- Division of Hematology and Medical Oncology, Leukemia Program, Weill Cornell Medicine/New York-Presbyterian Hospital, New York, New York 10065
| | - Gabriela Chiosis
- Chemical Biology Program, Memorial Sloan Kettering Cancer Center, New York, New York 10065
- Department of Medicine, Memorial Sloan Kettering Cancer Center, New York, New York 10065
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Zhu S, Li Y, Huang Y, Zhang M, Gu X, He Y, Liu H, Ma M, Lu W. Optimized HSP90 mediated fluorescent probes for cancer-specific bioimaging. J Mater Chem B 2020; 8:1878-1896. [PMID: 32037409 DOI: 10.1039/c9tb02505g] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Cancer-specific bioimaging has been correlated with fluorescence-guided tumor therapy, garnering extensive interest from researchers. Herein, a highly efficient tumor-targeting fluorescent probe (NP-001), which is integrated with 4-hydroxy-1,8-naphthalimide and NVP-AUY922, for tumor imaging has been established. 4-Hydroxy-1,8-naphthalimide is a fluorescent molecule with remarkable imaging compatibility. NVP-AUY922 is a heat shock protein 90 (HSP90) inhibitor with preferential tumor selectivity that is conjugated to 4-hydroxy-1,8-naphthalimide as a tumor-targeting ligand. NP-002, a resorcinol-blocked probe which prevented binding with an amino acid residue of the HSP90 ATP binding pocket, was also synthesized as a control. In vitro and ex vivo assays showed that NP-001 could arrest cell proliferation, induce apoptosis and accumulate to inhibit HSP90. Confocal laser scanning microscopy (CLSM) also confirmed that NP-001 could be selectively internalized by tumor cells for cancer-specific bioimaging. Moreover, pharmacokinetic studies and histological analysis also indicated that NP-001 had a relatively longer retention time and showed no major organ-related toxicities. Overall, these encouraging data suggest that NP-001 is a promising new candidate for the early diagnosis of metastatic disease as well as targeted tumor imaging.
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Affiliation(s)
- Shulei Zhu
- Shanghai Engineering Research Center of Molecular Therapeutics and New Drug Development, School of Chemistry and Molecular Engineering, East China Normal University, 3663 North Zhongshan Road, Shanghai, 200062, P. R. China.
| | - Yalei Li
- Division of Anti-Tumor Pharmacology, State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai, 201203, P. R. China
| | - Yushu Huang
- Shanghai Engineering Research Center of Molecular Therapeutics and New Drug Development, School of Chemistry and Molecular Engineering, East China Normal University, 3663 North Zhongshan Road, Shanghai, 200062, P. R. China.
| | - Minmin Zhang
- Division of Anti-Tumor Pharmacology, State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai, 201203, P. R. China
| | - Xiaofan Gu
- Shanghai Engineering Research Center of Molecular Therapeutics and New Drug Development, School of Chemistry and Molecular Engineering, East China Normal University, 3663 North Zhongshan Road, Shanghai, 200062, P. R. China.
| | - Yang He
- Shanghai Engineering Research Center of Molecular Therapeutics and New Drug Development, School of Chemistry and Molecular Engineering, East China Normal University, 3663 North Zhongshan Road, Shanghai, 200062, P. R. China.
| | - Hongchun Liu
- Division of Anti-Tumor Pharmacology, State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai, 201203, P. R. China
| | - Mingliang Ma
- Shanghai Engineering Research Center of Molecular Therapeutics and New Drug Development, School of Chemistry and Molecular Engineering, East China Normal University, 3663 North Zhongshan Road, Shanghai, 200062, P. R. China. and Key Laboratory of Brain Functional Genomics-Ministry of Education, School of Life Science, East China Normal University, 3663 North Zhongshan Road, Shanghai, 200062, P. R. China.
| | - Wei Lu
- Shanghai Engineering Research Center of Molecular Therapeutics and New Drug Development, School of Chemistry and Molecular Engineering, East China Normal University, 3663 North Zhongshan Road, Shanghai, 200062, P. R. China.
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Weickert S, Wawrzyniuk M, John LH, Rüdiger SGD, Drescher M. The mechanism of Hsp90-induced oligomerizaton of Tau. SCIENCE ADVANCES 2020; 6:eaax6999. [PMID: 32201713 PMCID: PMC7069708 DOI: 10.1126/sciadv.aax6999] [Citation(s) in RCA: 33] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/15/2019] [Accepted: 12/17/2019] [Indexed: 05/27/2023]
Abstract
Aggregation of the microtubule-associated protein Tau is a hallmark of Alzheimer's disease with Tau oligomers suspected as the most toxic agent. Tau is a client of the molecular chaperone Hsp90, although it is unclear whether and how the chaperone massages the structure of intrinsically disordered Tau. Using electron paramagnetic resonance, we extract structural information from the very broad conformational ensemble of Tau: Tau in solution is highly dynamic and polymorphic, although "paper clip"-shaped by long-range contacts. Interaction with Hsp90 promotes an open Tau conformation, which we identify as the molecular basis for the formation of small Tau oligomers by exposure of the aggregation-prone repeat domain to other Tau molecules. At the same time, formation of Tau fibrils is inhibited. We therefore provide the nanometer-scale zoom into chaperoning an amyloid client, highlighting formation of oligomers as the consequence of this biologically relevant interaction.
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Affiliation(s)
- S. Weickert
- Department of Chemistry, University of Konstanz, 78457 Konstanz, Germany
- Konstanz Research School Chemical Biology (KoRS-CB), University of Konstanz, 78457 Konstanz, Germany
| | - M. Wawrzyniuk
- Cellular Protein Chemistry, Bijvoet Center for Biomolecular Research, Utrecht University, Padualaan 8, 3584 CH Utrecht, Netherlands
| | - L. H. John
- Department of Chemistry, University of Konstanz, 78457 Konstanz, Germany
| | - S. G. D. Rüdiger
- Cellular Protein Chemistry, Bijvoet Center for Biomolecular Research, Utrecht University, Padualaan 8, 3584 CH Utrecht, Netherlands
| | - M. Drescher
- Department of Chemistry, University of Konstanz, 78457 Konstanz, Germany
- Konstanz Research School Chemical Biology (KoRS-CB), University of Konstanz, 78457 Konstanz, Germany
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HSP90 Interacts with the Fibronectin N-terminal Domains and Increases Matrix Formation. Cells 2020; 9:cells9020272. [PMID: 31979118 PMCID: PMC7072298 DOI: 10.3390/cells9020272] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2019] [Revised: 01/15/2020] [Accepted: 01/18/2020] [Indexed: 12/20/2022] Open
Abstract
Heat shock protein 90 (HSP90) is an evolutionarily conserved chaperone protein that controls the function and stability of a wide range of cellular client proteins. Fibronectin (FN) is an extracellular client protein of HSP90, and exogenous HSP90 or inhibitors of HSP90 alter the morphology of the extracellular matrix. Here, we further characterized the HSP90 and FN interaction. FN bound to the M domain of HSP90 and interacted with both the open and closed HSP90 conformations; and the interaction was reduced in the presence of sodium molybdate. HSP90 interacted with the N-terminal regions of FN, which are known to be important for matrix assembly. The highest affinity interaction was with the 30-kDa (heparin-binding) FN fragment, which also showed the greatest colocalization in cells and accommodated both HSP90 and heparin in the complex. The strength of interaction with HSP90 was influenced by the inherent stability of the FN fragments, together with the type of motif, where HSP90 preferentially bound the type-I FN repeat over the type-II repeat. Exogenous extracellular HSP90 led to increased incorporation of both full-length and 70-kDa fragments of FN into fibrils. Together, our data suggested that HSP90 may regulate FN matrix assembly through its interaction with N-terminal FN fragments.
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D'Annessa I, Raniolo S, Limongelli V, Di Marino D, Colombo G. Ligand Binding, Unbinding, and Allosteric Effects: Deciphering Small-Molecule Modulation of HSP90. J Chem Theory Comput 2019; 15:6368-6381. [PMID: 31538783 DOI: 10.1021/acs.jctc.9b00319] [Citation(s) in RCA: 36] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
The molecular chaperone HSP90 oversees the functional activation of a large number of client proteins. Because of its role in multiple pathways linked to cancer and neurodegeneration, drug discovery targeting HSP90 has been actively pursued. Yet, a number of inhibitors failed to meet expectations due to induced toxicity problems. In this context, allosteric perturbation has emerged as an alternative strategy for the pharmacological modulation of HSP90 functions. Specifically, novel allosteric stimulators showed the interesting capability of accelerating HSP90 closure dynamics and ATPase activities while inducing tumor cell death. Here, we gain atomistic insight into the mechanisms of allosteric ligand recognition and their consequences on the functional dynamics of HSP90, starting from the fully unbound state. We integrate advanced computational sampling methods based on FunnelMetadynamics, with the analysis of internal dynamics of the structural ensembles visited during the simulations. We observe several binding/unbinding events, and from these, we derive an accurate estimation of the absolute binding free energy. Importantly, we show that different binding poses induce different dynamics states. Our work for the first time explicitly correlates HSP90 responses to binding/unbinding of an allosteric ligand to the modulation of functionally oriented protein motions.
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Affiliation(s)
| | - Stefano Raniolo
- Università della Svizzera Italiana (USI) , Faculty of Biomedical Sciences, Institute of Computational Science - Center for Computational Medicine in Cardiology , via G. Buffi 13 , CH-Lugano , Switzerland
| | - Vittorio Limongelli
- Università della Svizzera Italiana (USI) , Faculty of Biomedical Sciences, Institute of Computational Science - Center for Computational Medicine in Cardiology , via G. Buffi 13 , CH-Lugano , Switzerland.,Department of Pharmacy , University of Naples ″Federico II″ , via D. Montesano 49 , I-80131 Naples , Italy
| | - Daniele Di Marino
- Università della Svizzera Italiana (USI) , Faculty of Biomedical Sciences, Institute of Computational Science - Center for Computational Medicine in Cardiology , via G. Buffi 13 , CH-Lugano , Switzerland.,Department of Life and Environmental Sciences - New York-Marche Structural Biology Center (NY-MaSBiC) , Polytechnic University of Marche , Via Brecce Bianche , 60131 Ancona , Italy
| | - Giorgio Colombo
- ICRM-CNR , Via Mario Bianco 9 , 20131 Milano , Italy.,Department of Chemistry , University of Pavia , V.le Taramelli 12 , 27100 Pavia , Italy
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