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An L, Gao H, Zhong Y, Liu Y, Cao Y, Yi J, Huang X, Wen C, Tong R, Pan Z, Yan X, Liu M, Wang S, Wu H, Hu T. The potential roles of stress-induced phosphoprotein 1 and connexin 43 in rats with reperfusion arrhythmia. Immun Inflamm Dis 2023; 11:e852. [PMID: 37904692 PMCID: PMC10546868 DOI: 10.1002/iid3.852] [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: 12/02/2022] [Revised: 04/03/2023] [Accepted: 04/12/2023] [Indexed: 11/01/2023] Open
Abstract
OBJECTIVE Connexin 43 (Cx43) is a critical gene for maintaining myocardial homeostasis. Interestingly, Cx43 and stress-induced phosphoprotein 1 (STIP1) were recorded to be lowly expressed in ischemia/reperfusion (I/R). However, their impacts on reperfusion arrhythmia (RA) remain to be explored. Our study aimed to find out the related underlying mechanisms. METHODS After the establishment of an isolated heart model through Langendorff perfusion, the heart rate, conduction activation time, conduction velocity, and conduction direction of the left ventricle were evaluated, along with the apoptotic rate detection in the collected myocardial tissues. After the construction of a hypoxia/reoxygenation (H/R)-induced cellular model, cell apoptosis, intercellular communication, cell viability, and the content of reactive oxygen species, superoxide dismutase, malondialdehyde, and lactic dehydrogenase were measured. The expression of Cx43 and STIP1 was determined in both rat heart and cell models. The bindings of STIP3 and Cx43 to heat shock protein 90 (HSP90) and heat shock protein 70 (HSP70) were verified. RESULTS Relative to the corresponding controls, Cx43 and STIP1 were decreased in myocardial tissues of RA rats and H/R-stimulated H9C2 cells, where Cx43-binding HSP70 and HSP90 were respectively increased and decreased, and ubiquitination level of Cx43 was enhanced. STIP1 overexpression promoted protein expression of Cx43, intercellular communication, and cell viability, and reduced cell apoptosis and oxidative stress in H/R-stimulated H9C2 cells. CONCLUSION STIP1 promoted Cx43 expression to improve intercellular communication and reduce oxidative stress in H/R-stimulated H9C2 cells.
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Affiliation(s)
- Li An
- School of AnesthesiologyGuizhou Medical UniversityGuiyangGuizhouChina
- Department of AnaesthesiologyAffiliated Hospital of Guizhou Medical UniversityGuiyangGuizhouChina
- Translational Medicine Research CenterGuizhou Medical UniversityGuiyangGuizhouChina
| | - Hong Gao
- Department of AnesthesiologyGuizhou Hospital of The 1st Affiliated Hospital, Sun Yat‐sen UniversityGuiyangGuizhouChina
| | - Yi Zhong
- Department of AnaesthesiologyAffiliated Hospital of Guizhou Medical UniversityGuiyangGuizhouChina
| | - Yanqiu Liu
- Department of AnesthesiologyGuiyang Fourth People's HospitalGuiyangGuizhouChina
| | - Ying Cao
- Department of AnesthesiologyGuiyang Second People's HospitalGuiyangGuizhouChina
| | - Jing Yi
- Department of AnaesthesiologyAffiliated Hospital of Guizhou Medical UniversityGuiyangGuizhouChina
| | - Xiang Huang
- School of AnesthesiologyGuizhou Medical UniversityGuiyangGuizhouChina
| | - Chunlei Wen
- Department of AnesthesiologyChildren's Hospital of Guiyang Maternal and Child Health HospitalGuiyangGuizhouChina
| | - Rui Tong
- School of AnesthesiologyGuizhou Medical UniversityGuiyangGuizhouChina
| | - Zhijun Pan
- School of AnesthesiologyGuizhou Medical UniversityGuiyangGuizhouChina
| | - Xu Yan
- School of AnesthesiologyGuizhou Medical UniversityGuiyangGuizhouChina
| | - Meiyan Liu
- School of AnesthesiologyGuizhou Medical UniversityGuiyangGuizhouChina
| | - Shengzhao Wang
- School of AnesthesiologyGuizhou Medical UniversityGuiyangGuizhouChina
| | - Hao Wu
- School of AnesthesiologyGuizhou Medical UniversityGuiyangGuizhouChina
| | - Tingju Hu
- Department of AnaesthesiologyAffiliated Hospital of Guizhou Medical UniversityGuiyangGuizhouChina
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Venediktov AA, Bushueva OY, Kudryavtseva VA, Kuzmin EA, Moiseeva AV, Baldycheva A, Meglinski I, Piavchenko GA. Closest horizons of Hsp70 engagement to manage neurodegeneration. Front Mol Neurosci 2023; 16:1230436. [PMID: 37795273 PMCID: PMC10546621 DOI: 10.3389/fnmol.2023.1230436] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2023] [Accepted: 08/18/2023] [Indexed: 10/06/2023] Open
Abstract
Our review seeks to elucidate the current state-of-the-art in studies of 70-kilodalton-weighed heat shock proteins (Hsp70) in neurodegenerative diseases (NDs). The family has already been shown to play a crucial role in pathological aggregation for a wide spectrum of brain pathologies. However, a slender boundary between a big body of fundamental data and its implementation has only recently been crossed. Currently, we are witnessing an anticipated advancement in the domain with dozens of studies published every month. In this review, we briefly summarize scattered results regarding the role of Hsp70 in the most common NDs including Alzheimer's disease (AD), Parkinson's disease (PD), and amyotrophic lateral sclerosis (ALS). We also bridge translational studies and clinical trials to portray the output for medical practice. Available options to regulate Hsp70 activity in NDs are outlined, too.
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Affiliation(s)
- Artem A. Venediktov
- Department of Human Anatomy and Histology, I.M. Sechenov First Moscow State Medical University (Sechenov University), Moscow, Russia
| | - Olga Yu Bushueva
- Laboratory of Genomic Research, Research Institute for Genetic and Molecular Epidemiology, Kursk State Medical University, Kursk, Russia
| | - Varvara A. Kudryavtseva
- Department of Human Anatomy and Histology, I.M. Sechenov First Moscow State Medical University (Sechenov University), Moscow, Russia
| | - Egor A. Kuzmin
- Department of Human Anatomy and Histology, I.M. Sechenov First Moscow State Medical University (Sechenov University), Moscow, Russia
| | - Aleksandra V. Moiseeva
- Department of Human Anatomy and Histology, I.M. Sechenov First Moscow State Medical University (Sechenov University), Moscow, Russia
| | - Anna Baldycheva
- STEMM Laboratory, University of Exeter, Exeter, United Kingdom
| | - Igor Meglinski
- Department of Physics, University of Oulu, Oulu, Finland
- College of Engineering and Physical Sciences, Aston University, Birmingham, United Kingdom
| | - Gennadii A. Piavchenko
- Department of Human Anatomy and Histology, I.M. Sechenov First Moscow State Medical University (Sechenov University), Moscow, Russia
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3
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An L, Gao H, Zhong Y, Liu Y, Cao Y, Yi J, Huang X, Wen C, Tong R, Pan Z, Yan X, Liu M, Wang S, Bai X, Wu H, Hu T. Molecular chaperones HSP40, HSP70, STIP1, and HSP90 are involved in stabilization of Cx43. Cytotechnology 2023; 75:207-217. [PMID: 37187948 PMCID: PMC10167082 DOI: 10.1007/s10616-023-00570-6] [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] [Received: 11/01/2022] [Accepted: 01/10/2023] [Indexed: 02/05/2023] Open
Abstract
To investigate the involvement of stress induced phosphoprotein 1 (STIP1), heat shock protein (HSP) 70, and HSP90 in ubiquitination of connexin 43 (Cx43) in rat H9c2 cardiomyocytes. Co-immunoprecipitation was used to detect protein-protein interactions and Cx43 ubiquitination. Immunofluorescence was used for protein co-localization. The protein binding, Cx43 protein expression, and Cx43 ubiquitination were reanalyzed in H9c2 cells with modified STIP1 and/or HSP90 expression. STIP1 bound to HSP70 and HSP90, and Cx43 bound to HSP40, HSP70, and HSP90 in normal H9c2 cardiomyocytes. Overexpression of STIP1 promoted the transition of Cx43-HSP70 to Cx43-HSP90 and inhibited Cx43 ubiquitination; knockdown of STIP1 resulted in the opposite effects. Inhibition of HSP90 counteracted the inhibitory effect of STIP1 overexpression on Cx43 ubiquitination. STIP1 suppresses Cx43 ubiquitination in H9c2 cardiomyocytes by promoting the transition of Cx43-HSP70 to Cx43-HSP90.
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Affiliation(s)
- Li An
- Guizhou Medical University, Guiyang, 550004 Guizhou People’s Republic of China
- Department of Anesthesiology, The Affiliated Hospital of Guizhou Medical University, No. 28 Guiyi St, Yunyan District, Guiyang, 550004 Guizhou People’s Republic of China
- Translational Medicine Research Center of Guizhou Medical University, Guiyang, 550004 Guizhou People’s Republic of China
| | - Hong Gao
- Department of Anesthesiology, The Affiliated Hospital of Guizhou Medical University, No. 28 Guiyi St, Yunyan District, Guiyang, 550004 Guizhou People’s Republic of China
| | - Yi Zhong
- Department of Anesthesiology, The Affiliated Hospital of Guizhou Medical University, No. 28 Guiyi St, Yunyan District, Guiyang, 550004 Guizhou People’s Republic of China
| | - Yanqiu Liu
- Department of Anesthesiology, Guiyang Fourth People’s Hospital, Guiyang, 550002 Guizhou People’s Republic of China
| | - Ying Cao
- School of Anesthesiology, Guizhou Medical University, Guiyang, 550004 Guizhou People’s Republic of China
- Guiyang Second People’s Hospital, Guiyang, 550001 Guizhou People’s Republic of China
| | - Jing Yi
- Department of Anesthesiology, The Affiliated Hospital of Guizhou Medical University, No. 28 Guiyi St, Yunyan District, Guiyang, 550004 Guizhou People’s Republic of China
| | - Xiang Huang
- School of Anesthesiology, Guizhou Medical University, Guiyang, 550004 Guizhou People’s Republic of China
| | - Chunlei Wen
- Children’s Hospital of Guiyang Maternal and Child Health Hospital, Guiyang, 550001 Guizhou People’s Republic of China
| | - Rui Tong
- School of Anesthesiology, Guizhou Medical University, Guiyang, 550004 Guizhou People’s Republic of China
| | - Zhijun Pan
- School of Anesthesiology, Guizhou Medical University, Guiyang, 550004 Guizhou People’s Republic of China
| | - Xu Yan
- School of Anesthesiology, Guizhou Medical University, Guiyang, 550004 Guizhou People’s Republic of China
| | - Meiyan Liu
- School of Anesthesiology, Guizhou Medical University, Guiyang, 550004 Guizhou People’s Republic of China
| | - Shengzhao Wang
- School of Anesthesiology, Guizhou Medical University, Guiyang, 550004 Guizhou People’s Republic of China
| | - Xue Bai
- School of Anesthesiology, Guizhou Medical University, Guiyang, 550004 Guizhou People’s Republic of China
| | - Hao Wu
- School of Anesthesiology, Guizhou Medical University, Guiyang, 550004 Guizhou People’s Republic of China
| | - Tingju Hu
- School of Anesthesiology, Guizhou Medical University, Guiyang, 550004 Guizhou People’s Republic of China
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4
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Bagnall-Moreau C, Spielman B, Brimberg L. Maternal brain reactive antibodies profile in autism spectrum disorder: an update. Transl Psychiatry 2023; 13:37. [PMID: 36737600 PMCID: PMC9898547 DOI: 10.1038/s41398-023-02335-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/25/2022] [Revised: 01/20/2023] [Accepted: 01/24/2023] [Indexed: 02/05/2023] Open
Abstract
Autism spectrum disorder (ASD) is a heterogeneous neurodevelopmental disorder with multifactorial etiologies involving both genetic and environmental factors. In the past two decades it has become clear that in utero exposure to toxins, inflammation, microbiome, and antibodies (Abs), may play a role in the etiology of ASD. Maternal brain-reactive Abs, present in 10-20% of mothers of a child with ASD, pose a potential risk to the developing brain because they can gain access to the brain during gestation, altering brain development during a critical period. Different maternal anti-brain Abs have been associated with ASD and have been suggested to bind extracellular or intracellular neuronal antigens. Clinical data from various cohorts support the increase in prevalence of such maternal brain-reactive Abs in mothers of a child with ASD compared to mothers of a typically developing child. Animal models of both non-human primates and rodents have provided compelling evidence supporting a pathogenic role of these Abs. In this review we summarize the data from clinical and animal models addressing the role of pathogenic maternal Abs in ASD. We propose that maternal brain-reactive Abs are an overlooked and promising field of research, representing a modifiable risk factor that may account for up to 20% of cases of ASD. More studies are needed to better characterize the Abs that contribute to the risk of having a child with ASD, to understand whether we can we predict such cases of ASD, and to better pinpoint the antigenic specificity of these Abs and their mechanisms of pathogenicity.
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Affiliation(s)
- Ciara Bagnall-Moreau
- grid.250903.d0000 0000 9566 0634Institute of Molecular Medicine, The Feinstein Institutes for Medical Research, Northwell Health System, Manhasset, New York, NY USA
| | - Benjamin Spielman
- grid.250903.d0000 0000 9566 0634Institute of Molecular Medicine, The Feinstein Institutes for Medical Research, Northwell Health System, Manhasset, New York, NY USA ,grid.512756.20000 0004 0370 4759Donald and Barbara Zucker School of Medicine at Hofstra/Northwell, Hempstead, NY USA
| | - Lior Brimberg
- Institute of Molecular Medicine, The Feinstein Institutes for Medical Research, Northwell Health System, Manhasset, New York, NY, USA. .,Donald and Barbara Zucker School of Medicine at Hofstra/Northwell, Hempstead, NY, USA.
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5
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Hsp70/Hsp90 Organising Protein (Hop): Coordinating Much More than Chaperones. Subcell Biochem 2023; 101:81-125. [PMID: 36520304 DOI: 10.1007/978-3-031-14740-1_3] [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: 12/23/2022]
Abstract
The Hsp70/Hsp90 organising protein (Hop, also known as stress-inducible protein 1/STI1/STIP1) has received considerable attention for diverse cellular functions in both healthy and diseased states. There is extensive evidence that intracellular Hop is a co-chaperone of the major chaperones Hsp70 and Hsp90, playing an important role in the productive folding of Hsp90 client proteins, although recent evidence suggests that eukaryotic Hop is regulatory within chaperone complexes rather than essential. Consequently, Hop is implicated in many key signalling pathways, including aberrant pathways leading to cancer. Hop is also secreted, and it is now well established that Hop interacts with the prion protein, PrPC, to mediate multiple signalling events. The intracellular and extracellular forms of Hop most likely represent two different isoforms, although the molecular determinants of these divergent functions are yet to be identified. There is also a growing body of research that reports the involvement of Hop in cellular activities that appear independent of either chaperones or PrPC. While the various cellular functions of Hop have been described, its biological function remains elusive. However, recent knockout studies in mammals suggest that Hop has an important role in embryonic development. This review provides a critical overview of the latest molecular, cellular and biological research on Hop, critically evaluating its function in healthy systems and how this function is adapted in diseased states.
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6
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Parkinson's Disease-Specific Autoantibodies against the Neuroprotective Co-Chaperone STIP1. Cells 2022; 11:cells11101649. [PMID: 35626686 PMCID: PMC9139896 DOI: 10.3390/cells11101649] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2022] [Revised: 05/05/2022] [Accepted: 05/12/2022] [Indexed: 12/10/2022] Open
Abstract
Parkinson’s disease (PD) is a debilitating movement disorder characterised by the loss of dopaminergic neurons in the substantia nigra. As neuroprotective agents mitigating the rate of neurodegeneration are unavailable, the current therapies largely focus only on symptomatic relief. Here, we identified stress-inducible phosphoprotein 1 (STIP1) as a putative neuroprotective factor targeted by PD-specific autoantibodies. STIP1 is a co-chaperone with reported neuroprotective capacities in mouse Alzheimer’s disease and stroke models. With human dopaminergic neurons derived from induced pluripotent stem cells, STIP1 was found to alleviate staurosporine-induced neurotoxicity. A case-control study involving 50 PD patients (average age = 62.94 ± 8.48, Hoehn and Yahr >2 = 55%) and 50 age-matched healthy controls (HCs) (average age = 63.1 ± 8) further revealed high levels of STIP1 autoantibodies in 20% of PD patients compared to 10% of HCs. Using an overlapping peptide library covering the STIP1 protein, we identified four PD-specific B cell epitopes that were not recognised in HCs. All of these epitopes were located within regions crucial for STIP1’s chaperone function or prion protein association. Our clinical and neuro-immunological studies highlight the potential of the STIP1 co-chaperone as an endogenous neuroprotective agent in PD and suggest the possible involvement of autoimmune mechanisms via the production of autoantibodies in a subset of individuals.
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7
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Stress-inducible phosphoprotein 1 (HOP/STI1/STIP1) regulates the accumulation and toxicity of α-synuclein in vivo. Acta Neuropathol 2022; 144:881-910. [PMID: 36121476 PMCID: PMC9547791 DOI: 10.1007/s00401-022-02491-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2022] [Revised: 08/26/2022] [Accepted: 08/30/2022] [Indexed: 01/26/2023]
Abstract
The predominantly pre-synaptic intrinsically disordered protein α-synuclein is prone to misfolding and aggregation in synucleinopathies, such as Parkinson's disease (PD) and Dementia with Lewy bodies (DLB). Molecular chaperones play important roles in protein misfolding diseases and members of the chaperone machinery are often deposited in Lewy bodies. Here, we show that the Hsp90 co-chaperone STI1 co-immunoprecipitated α-synuclein, and co-deposited with Hsp90 and Hsp70 in insoluble protein fractions in two mouse models of α-synuclein misfolding. STI1 and Hsp90 also co-localized extensively with filamentous S129 phosphorylated α-synuclein in ubiquitin-positive inclusions. In PD human brains, STI1 transcripts were increased, and in neurologically healthy brains, STI1 and α-synuclein transcripts correlated. Nuclear Magnetic Resonance (NMR) analyses revealed direct interaction of α-synuclein with STI1 and indicated that the STI1 TPR2A, but not TPR1 or TPR2B domains, interacted with the C-terminal domain of α-synuclein. In vitro, the STI1 TPR2A domain facilitated S129 phosphorylation by Polo-like kinase 3. Moreover, mice over-expressing STI1 and Hsp90ß presented elevated α-synuclein S129 phosphorylation accompanied by inclusions when injected with α-synuclein pre-formed fibrils. In contrast, reduced STI1 function decreased protein inclusion formation, S129 α-synuclein phosphorylation, while mitigating motor and cognitive deficits as well as mesoscopic brain atrophy in α-synuclein-over-expressing mice. Our findings reveal a vicious cycle in which STI1 facilitates the generation and accumulation of toxic α-synuclein conformers, while α-synuclein-induced proteostatic stress increased insoluble STI1 and Hsp90.
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8
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Lin LTW, Razzaq A, Di Gregorio SE, Hong S, Charles B, Lopes MH, Beraldo F, Prado VF, Prado MAM, Duennwald ML. Hsp90 and its co-chaperone Sti1 control TDP-43 misfolding and toxicity. FASEB J 2021; 35:e21594. [PMID: 33908654 DOI: 10.1096/fj.202002645r] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2020] [Revised: 03/15/2021] [Accepted: 03/30/2021] [Indexed: 12/14/2022]
Abstract
Protein misfolding is a central feature of most neurodegenerative diseases. Molecular chaperones can modulate the toxicity associated with protein misfolding, but it remains elusive which molecular chaperones and co-chaperones interact with specific misfolded proteins. TDP-43 misfolding and inclusion formation are a hallmark of amyotrophic lateral sclerosis (ALS) and other neurodegenerative diseases. Using yeast and mammalian neuronal cells we find that Hsp90 and its co-chaperone Sti1 have the capacity to alter TDP-43 misfolding, inclusion formation, aggregation, and cellular toxicity. Our data also demonstrate that impaired Hsp90 function sensitizes cells to TDP-43 toxicity and that Sti1 specifically interacts with and strongly modulates TDP-43 toxicity in a dose-dependent manner. Our study thus uncovers a previously unrecognized tie between Hsp90, Sti1, TDP-43 misfolding, and cellular toxicity.
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Affiliation(s)
- Lilian Tsai-Wei Lin
- Department of Pathology and Laboratory Medicine, Schulich School of Medicine and Dentistry, University of Western Ontario, London, ON, Canada
| | - Abdul Razzaq
- Robarts Research Institute, Schulich School of Medicine and Dentistry, University of Western Ontario, London, ON, Canada
| | - Sonja E Di Gregorio
- Department of Pathology and Laboratory Medicine, Schulich School of Medicine and Dentistry, University of Western Ontario, London, ON, Canada
| | - Soojie Hong
- Department of Pathology and Laboratory Medicine, Schulich School of Medicine and Dentistry, University of Western Ontario, London, ON, Canada
| | - Brendan Charles
- Department of Pathology and Laboratory Medicine, Schulich School of Medicine and Dentistry, University of Western Ontario, London, ON, Canada
| | - Marilene H Lopes
- Robarts Research Institute, Schulich School of Medicine and Dentistry, University of Western Ontario, London, ON, Canada.,Department of Anatomy & Cell Biology, Schulich School of Medicine and Dentistry, University of Western Ontario, London, ON, Canada.,Department of Cell and Developmental Biology, Institute of Biomedical Sciences, University of São Paulo, São Paulo, Brazil
| | - Flavio Beraldo
- Robarts Research Institute, Schulich School of Medicine and Dentistry, University of Western Ontario, London, ON, Canada.,Department of Physiology and Pharmacology, Schulich School of Medicine and Dentistry, University of Western Ontario, London, ON, Canada
| | - Vania F Prado
- Robarts Research Institute, Schulich School of Medicine and Dentistry, University of Western Ontario, London, ON, Canada.,Department of Anatomy & Cell Biology, Schulich School of Medicine and Dentistry, University of Western Ontario, London, ON, Canada.,Department of Physiology and Pharmacology, Schulich School of Medicine and Dentistry, University of Western Ontario, London, ON, Canada
| | - Marco A M Prado
- Robarts Research Institute, Schulich School of Medicine and Dentistry, University of Western Ontario, London, ON, Canada.,Department of Anatomy & Cell Biology, Schulich School of Medicine and Dentistry, University of Western Ontario, London, ON, Canada.,Department of Physiology and Pharmacology, Schulich School of Medicine and Dentistry, University of Western Ontario, London, ON, Canada
| | - Martin L Duennwald
- Department of Pathology and Laboratory Medicine, Schulich School of Medicine and Dentistry, University of Western Ontario, London, ON, Canada.,Department of Anatomy & Cell Biology, Schulich School of Medicine and Dentistry, University of Western Ontario, London, ON, Canada
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9
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Dutysheva EA, Utepova IA, Trestsova MA, Anisimov AS, Charushin VN, Chupakhin ON, Margulis BA, Guzhova IV, Lazarev VF. Synthesis and approbation of new neuroprotective chemicals of pyrrolyl- and indolylazine classes in a cell model of Alzheimer's disease. Eur J Med Chem 2021; 222:113577. [PMID: 34087544 DOI: 10.1016/j.ejmech.2021.113577] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2021] [Revised: 05/18/2021] [Accepted: 05/19/2021] [Indexed: 12/19/2022]
Abstract
One of the major causes of neurodegeneration in the pathogenesis of Alzheimer's disease is the accumulation of cytotoxic amyloid species within the intercellular compartments of the brain. The efficacy of the anti-proteotoxic mechanism based on the molecular chaperones Hsp70 and Hsp90 in numerous types of neurons is often low, while its pharmacological enhancement has been shown to ameliorate the physiological and cognitive functions of the brain. Suggesting that the chemicals able to induce heat shock protein synthesis and therefore rescue neural cells from cytotoxicity associated with amyloid, we have synthesized a group of pyrrolyl- and indolylazines that cause the accumulation of heat shock proteins, using a novel method of photocatalysis that is employed in green chemistry. The selected compounds were tested in a cell model of Alzheimer's disease and demonstrated a pronounced neuroprotective effect. These substances increased the survival of neurons, blocked the activation of β-galactosidase, and prevented apoptosis in neurons cultured in the presence of β-amyloid.
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Affiliation(s)
| | - Irina A Utepova
- Ural Federal University, Ekaterinburg, 620002, Russia; Postovsky Institute of Organic Synthesis, Ural Branch of the Russian Academy of Sciences, Ekaterinburg, 620108, Russia
| | - Maria A Trestsova
- Ural Federal University, Ekaterinburg, 620002, Russia; Postovsky Institute of Organic Synthesis, Ural Branch of the Russian Academy of Sciences, Ekaterinburg, 620108, Russia
| | - Alexander S Anisimov
- Institute of Cytology, Russian Academy of Sciences, St. Petersburg, 194064, Russia
| | - Valery N Charushin
- Ural Federal University, Ekaterinburg, 620002, Russia; Postovsky Institute of Organic Synthesis, Ural Branch of the Russian Academy of Sciences, Ekaterinburg, 620108, Russia
| | - Oleg N Chupakhin
- Ural Federal University, Ekaterinburg, 620002, Russia; Postovsky Institute of Organic Synthesis, Ural Branch of the Russian Academy of Sciences, Ekaterinburg, 620108, Russia
| | - Boris A Margulis
- Institute of Cytology, Russian Academy of Sciences, St. Petersburg, 194064, Russia
| | - Irina V Guzhova
- Institute of Cytology, Russian Academy of Sciences, St. Petersburg, 194064, Russia
| | - Vladimir F Lazarev
- Institute of Cytology, Russian Academy of Sciences, St. Petersburg, 194064, Russia.
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10
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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: 22] [Impact Index Per Article: 7.3] [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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11
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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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Lackie RE, Marques-Lopes J, Ostapchenko VG, Good S, Choy WY, van Oosten-Hawle P, Pasternak SH, Prado VF, Prado MAM. Increased levels of Stress-inducible phosphoprotein-1 accelerates amyloid-β deposition in a mouse model of Alzheimer's disease. Acta Neuropathol Commun 2020; 8:143. [PMID: 32825842 PMCID: PMC7441634 DOI: 10.1186/s40478-020-01013-5] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2020] [Accepted: 08/01/2020] [Indexed: 02/08/2023] Open
Abstract
Molecular chaperones and co-chaperones, which are part of the protein quality control machinery, have been shown to regulate distinct aspects of Alzheimer's Disease (AD) pathology in multiple ways. Notably, the co-chaperone STI1, which presents increased levels in AD, can protect mammalian neurons from amyloid-β toxicity in vitro and reduced STI1 levels worsen Aβ toxicity in C. elegans. However, whether increased STI1 levels can protect neurons in vivo remains unknown. We determined that overexpression of STI1 and/or Hsp90 protected C. elegans expressing Aβ(3-42) against Aβ-mediated paralysis. Mammalian neurons were also protected by elevated levels of endogenous STI1 in vitro, and this effect was mainly due to extracellular STI1. Surprisingly, in the 5xFAD mouse model of AD, by overexpressing STI1, we find increased amyloid burden, which amplifies neurotoxicity and worsens spatial memory deficits in these mutants. Increased levels of STI1 disturbed the expression of Aβ-regulating enzymes (BACE1 and MMP-2), suggesting potential mechanisms by which amyloid burden is increased in mice. Notably, we observed that STI1 accumulates in dense-core AD plaques in both 5xFAD mice and human brain tissue. Our findings suggest that elevated levels of STI1 contribute to Aβ accumulation, and that STI1 is deposited in AD plaques in mice and humans. We conclude that despite the protective effects of STI1 in C. elegans and in mammalian cultured neurons, in vivo, the predominant effect of elevated STI1 is deleterious in AD.
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Affiliation(s)
- Rachel E Lackie
- Robarts Research Institute, The University of Western Ontario, 1151 Richmond St. N., London, Ontario, N6A 5B7, Canada
- Program in Neuroscience, The University of Western Ontario, 1151 Richmond St, London, N6A 3K7, Canada
| | - Jose Marques-Lopes
- Robarts Research Institute, The University of Western Ontario, 1151 Richmond St. N., London, Ontario, N6A 5B7, Canada
| | - Valeriy G Ostapchenko
- Robarts Research Institute, The University of Western Ontario, 1151 Richmond St. N., London, Ontario, N6A 5B7, Canada
| | - Sarah Good
- School of Molecular and Cell Biology and Astbury Centre for Structural Molecular Biology, University of Leeds, Leeds, LS2 9JT, UK
| | - Wing-Yiu Choy
- Department of Biochemistry, Schulich School of Medicine & Dentistry, The University of Western Ontario, Medical Sciences Building, 1151 Richmond St. N, London, N6A 5B7, Canada
| | - Patricija van Oosten-Hawle
- School of Molecular and Cell Biology and Astbury Centre for Structural Molecular Biology, University of Leeds, Leeds, LS2 9JT, UK
| | - Stephen H Pasternak
- Robarts Research Institute, The University of Western Ontario, 1151 Richmond St. N., London, Ontario, N6A 5B7, Canada
- St. Joseph's Health Care London-Parkwood Institute, St. Joseph's Hospital, 268 Grosvenor St Room A1-015, London, N6A 4V2, Canada
- Department of Clinical Neurological Sciences, Schulich School of Medicine & Dentistry, 1151 Richmond St, London, N6A 3K7, Canada
| | - Vania F Prado
- Robarts Research Institute, The University of Western Ontario, 1151 Richmond St. N., London, Ontario, N6A 5B7, Canada.
- Program in Neuroscience, The University of Western Ontario, 1151 Richmond St, London, N6A 3K7, Canada.
- Department of Anatomy & Cell Biology, The University of Western Ontario, 1151 Richmond St, London, N6A 3K7, Canada.
- Department of Physiology and Pharmacology, Schulich School of Medicine and Dentistry, The University of Western Ontario, 1151 Richmond St, London, N6A 3K7, Ontario, Canada.
| | - Marco A M Prado
- Robarts Research Institute, The University of Western Ontario, 1151 Richmond St. N., London, Ontario, N6A 5B7, Canada.
- Program in Neuroscience, The University of Western Ontario, 1151 Richmond St, London, N6A 3K7, Canada.
- Department of Anatomy & Cell Biology, The University of Western Ontario, 1151 Richmond St, London, N6A 3K7, Canada.
- Department of Physiology and Pharmacology, Schulich School of Medicine and Dentistry, The University of Western Ontario, 1151 Richmond St, London, N6A 3K7, Ontario, Canada.
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