1
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Montoya MR, Quanrud GM, Mei L, Moñtano JL, Hong C, Genereux JC. Factors affecting protein recovery during Hsp40 affinity profiling. Anal Bioanal Chem 2024:10.1007/s00216-024-05362-1. [PMID: 38850318 DOI: 10.1007/s00216-024-05362-1] [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: 10/09/2023] [Revised: 04/30/2024] [Accepted: 05/22/2024] [Indexed: 06/10/2024]
Abstract
The identification and quantification of misfolded proteins from complex mixtures is important for biological characterization and disease diagnosis, but remains a major bioanalytical challenge. We have developed Hsp40 Affinity Profiling as a bioanalytical approach to profile protein stability in response to cellular stress. In this assay, we ectopically introduce the Hsp40 FlagDNAJB8H31Q into cells and use quantitative proteomics to determine how protein affinity for DNAJB8 changes in the presence of cellular stress, without regard for native clients. Herein, we evaluate potential approaches to improve the performance of this bioanalytical assay. We find that although intracellular crosslinking increases recovery of protein interactors, this is not enough to overcome the relative drop in DNAJB8 recovery. While the J-domain promotes Hsp70 association, it does not affect the yield of protein association with DNAJB8 under basal conditions. By contrast, crosslinking and J-domain ablation both substantially increase relative protein interactor recovery with the structurally distinct Class B Hsp40 DNAJB1 but are completely compensated by poorer yield of DNAJB1 itself. Cellular thermal stress promotes increased affinity between DNAJB8H31Q and interacting proteins, as expected for interactions driven by recognition of misfolded proteins. DNAJB8WT does not demonstrate such a property, suggesting that under stress misfolded proteins are handed off to Hsp70. Hence, we find that DNAJB8H31Q is still our most effective recognition element for the recovery of destabilized client proteins following cellular stress.
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Affiliation(s)
- Maureen R Montoya
- Department of Chemistry, University of California, 501 Big Springs Rd, Riverside, CA, 92521, USA
| | - Guy M Quanrud
- Department of Chemistry, University of California, 501 Big Springs Rd, Riverside, CA, 92521, USA
| | - Liangyong Mei
- Department of Chemistry, University of North Florida, Jacksonville, FL, USA
| | - José L Moñtano
- Department of Chemistry, University of California, 501 Big Springs Rd, Riverside, CA, 92521, USA
| | - Caleb Hong
- Department of Chemistry, University of California, 501 Big Springs Rd, Riverside, CA, 92521, USA
| | - Joseph C Genereux
- Department of Chemistry, University of California, 501 Big Springs Rd, Riverside, CA, 92521, USA.
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2
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Ryder BD, Ustyantseva E, Boyer DR, Mendoza-Oliva A, Kuska MI, Wydorski PM, Macierzyńska P, Morgan N, Sawaya MR, Diamond MI, Kampinga HH, Joachimiak LA. DNAJB8 oligomerization is mediated by an aromatic-rich motif that is dispensable for substrate activity. Structure 2024; 32:662-678.e8. [PMID: 38508190 DOI: 10.1016/j.str.2024.02.015] [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: 05/01/2023] [Revised: 01/17/2024] [Accepted: 02/22/2024] [Indexed: 03/22/2024]
Abstract
J-domain protein (JDP) molecular chaperones have emerged as central players that maintain a healthy proteome. The diverse members of the JDP family function as monomers/dimers and a small subset assemble into micron-sized oligomers. The oligomeric JDP members have eluded structural characterization due to their low-complexity, intrinsically disordered middle domains. This in turn, obscures the biological significance of these larger oligomers in protein folding processes. Here, we identified a short, aromatic motif within DNAJB8 that drives self-assembly through π-π stacking and determined its X-ray structure. We show that mutations in the motif disrupt DNAJB8 oligomerization in vitro and in cells. DNAJB8 variants that are unable to assemble bind to misfolded tau seeds more specifically and retain capacity to reduce protein aggregation in vitro and in cells. We propose a new model for DNAJB8 function in which the sequences in the low-complexity domains play distinct roles in assembly and substrate activity.
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Affiliation(s)
- Bryan D Ryder
- Center for Alzheimer's and Neurodegenerative Diseases, Peter O'Donnell Jr. Brain Institute, University of Texas Southwestern Medical Center, Dallas, TX 75390, USA
| | - Elizaveta Ustyantseva
- Department of Biomedical Sciences of Cells & Systems, University Medical Center Groningen, University of Groningen, Groningen 9713 AV, The Netherlands
| | - David R Boyer
- Molecular Biology Institute, University of California Los Angeles, Los Angeles, CA 90095, USA
| | - Ayde Mendoza-Oliva
- Center for Alzheimer's and Neurodegenerative Diseases, Peter O'Donnell Jr. Brain Institute, University of Texas Southwestern Medical Center, Dallas, TX 75390, USA
| | - Mikołaj I Kuska
- Center for Alzheimer's and Neurodegenerative Diseases, Peter O'Donnell Jr. Brain Institute, University of Texas Southwestern Medical Center, Dallas, TX 75390, USA
| | - Paweł M Wydorski
- Center for Alzheimer's and Neurodegenerative Diseases, Peter O'Donnell Jr. Brain Institute, University of Texas Southwestern Medical Center, Dallas, TX 75390, USA
| | - Paulina Macierzyńska
- Center for Alzheimer's and Neurodegenerative Diseases, Peter O'Donnell Jr. Brain Institute, University of Texas Southwestern Medical Center, Dallas, TX 75390, USA
| | - Nabil Morgan
- Center for Alzheimer's and Neurodegenerative Diseases, Peter O'Donnell Jr. Brain Institute, University of Texas Southwestern Medical Center, Dallas, TX 75390, USA
| | - Michael R Sawaya
- Molecular Biology Institute, University of California Los Angeles, Los Angeles, CA 90095, USA
| | - Marc I Diamond
- Center for Alzheimer's and Neurodegenerative Diseases, Peter O'Donnell Jr. Brain Institute, University of Texas Southwestern Medical Center, Dallas, TX 75390, USA
| | - Harm H Kampinga
- Department of Biomedical Sciences of Cells & Systems, University Medical Center Groningen, University of Groningen, Groningen 9713 AV, The Netherlands
| | - Lukasz A Joachimiak
- Center for Alzheimer's and Neurodegenerative Diseases, Peter O'Donnell Jr. Brain Institute, University of Texas Southwestern Medical Center, Dallas, TX 75390, USA; Department of Biochemistry, University of Texas Southwestern Medical Center, Dallas, TX 75390, USA.
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3
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Zhao Y, Zhong X, Xu G, Zhu X, Shi Y, Liu M, Wang R, Kang H, You X, Ning Y, Wang G, Wang X. The F-box protein OsFBX156 positively regulates rice defence against the blast fungus Magnaporthe oryzae by mediating ubiquitination-dependent degradation of OsHSP71.1. MOLECULAR PLANT PATHOLOGY 2024; 25:e13459. [PMID: 38808386 PMCID: PMC11134189 DOI: 10.1111/mpp.13459] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/27/2023] [Revised: 04/01/2024] [Accepted: 04/04/2024] [Indexed: 05/30/2024]
Abstract
F-box protein is a subunit of the SCF (SKP1-CUL1-F-box protein) E3 ubiquitin ligase complex, which plays a critical role in regulating different pathways in plant immunity. In this study, we identified the rice (Oryza sativa) F-box protein OsFBX156, which targets the heat shock protein 70 (OsHSP71.1) to regulate resistance to the rice blast fungus Magnaporthe oryzae. Overexpression of OsFBX156 or knockout of OsHSP71.1 in rice resulted in the elevation of pathogenesis-related (PR) genes and an induction burst of reactive oxygen species (ROS) after flg22 and chitin treatments, thereby enhancing resistance to M. oryzae. Furthermore, OsFBX156 can promote the degradation of OsHSP71.1 through the 26S proteasome pathway. This study sheds lights on a novel mechanism wherein the F-box protein OsFBX156 targets OsHSP71.1 for degradation to promote ROS production and PR gene expression, thereby positively regulating rice innate immunity.
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Affiliation(s)
- Yudan Zhao
- State Key Laboratory for Biology of Plant Diseases and Insect PestsInstitute of Plant Protection, Chinese Academy of Agricultural SciencesBeijingChina
| | - Xionghui Zhong
- Key Laboratory of Biology and Genetic Improvement of Horticultural Crops (North China)Beijing Vegetable Research Center, Beijing Academy of Agriculture and Forestry Sciences, Ministry of AgricultureBeijingChina
| | - Guojuan Xu
- State Key Laboratory for Biology of Plant Diseases and Insect PestsInstitute of Plant Protection, Chinese Academy of Agricultural SciencesBeijingChina
| | - Xiaoying Zhu
- State Key Laboratory for Biology of Plant Diseases and Insect PestsInstitute of Plant Protection, Chinese Academy of Agricultural SciencesBeijingChina
| | - Yanlong Shi
- State Key Laboratory for Biology of Plant Diseases and Insect PestsInstitute of Plant Protection, Chinese Academy of Agricultural SciencesBeijingChina
| | - Minghao Liu
- Shenzhen Branch, Guangdong Laboratory of Lingnan Modern Agriculture, Genome Analysis Laboratory of the Ministry of Agriculture and Rural AffairsAgricultural Genomics Institute at Shenzhen, Chinese Academy of Agricultural SciencesShenzhenChina
| | - Ruyi Wang
- State Key Laboratory for Biology of Plant Diseases and Insect PestsInstitute of Plant Protection, Chinese Academy of Agricultural SciencesBeijingChina
| | - Houxiang Kang
- State Key Laboratory for Biology of Plant Diseases and Insect PestsInstitute of Plant Protection, Chinese Academy of Agricultural SciencesBeijingChina
| | - Xiaoman You
- State Key Laboratory for Biology of Plant Diseases and Insect PestsInstitute of Plant Protection, Chinese Academy of Agricultural SciencesBeijingChina
| | - Yuese Ning
- State Key Laboratory for Biology of Plant Diseases and Insect PestsInstitute of Plant Protection, Chinese Academy of Agricultural SciencesBeijingChina
| | - Guo‐Liang Wang
- Department of Plant PathologyThe Ohio State UniversityColumbusOhioUSA
| | - Xuli Wang
- State Key Laboratory for Biology of Plant Diseases and Insect PestsInstitute of Plant Protection, Chinese Academy of Agricultural SciencesBeijingChina
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Mahto FK, Bhattacharya A, Bhattacharya S. Molecular dynamics simulations shows real-time lid opening in Hsp70 chaperone. J Mol Graph Model 2024; 129:108726. [PMID: 38377794 DOI: 10.1016/j.jmgm.2024.108726] [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: 10/07/2023] [Revised: 12/12/2023] [Accepted: 02/08/2024] [Indexed: 02/22/2024]
Abstract
The stress-inducible mammalian heat shock protein Hsp70 and its bacterial orthologue DnaK are highly conserved molecular chaperones and a crucial part of the machinery responsible for protein folding and homeostasis. Hsp70 is a three-domain, 70 kDa protein that cycles between an ATP-bound state in which all three domains are securely coupled into one unit and an ADP-bound state in which they are loosely attached via a flexible interdomain linker. The Hsp70 presents an alluring novel therapeutic target since it is crucial for maintaining cellular proteostasis and is particularly crucial to cancer cells. We have performed molecular dynamics simulations of the SBD (substrate binding domain) along with the Lid domain in response to experimental efforts to identify small molecule inhibitors that impair the functioning of Hsp70. Our intent has been to characterize the motion of the SBD/Lid allosteric machinery and in, addition, to identify the effect of the PET16 molecule on this motion. Interestingly, we noticed the opening of the entire Lid domain in the apo-form of the dimer. The configuration of the open structure was very different from previously published structures (PDB 4JN4) of the open and docked conformation of the ATP bound form. MD simulations revealed the Lid to be capable of far greater dynamical excursions than has been anticipated by experimental structural biology. This is of value in future drug discovery efforts targeted to modulating Hsp70 activity. The PET16 molecule appears to be weakly bound and its effect on the dynamics of the complex is yet to be elucidated.
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Affiliation(s)
- Farindra Kumar Mahto
- Department of Chemical Engineering, Indian Institute of Technology Bombay, Mumbai, 400076, India.
| | | | - Swati Bhattacharya
- Department of Chemical Engineering, Indian Institute of Technology Bombay, Mumbai, 400076, India.
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Gao J, Lu C, Wei Y, Xie Q, Jin J, Li J, Yang F, Zhu G. Phosphorylation of 399S at CsHsp70 of Cymbidium sinense is essential to maintain chlorophyll stability. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2024; 211:108518. [PMID: 38744085 DOI: 10.1016/j.plaphy.2024.108518] [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: 11/18/2023] [Revised: 02/08/2024] [Accepted: 03/08/2024] [Indexed: 05/16/2024]
Abstract
The Chinese orchids symbolise nobility and gentility in China, and the variation of leaf color makes Cymbidium sinense more diversified and valuable. However, its color variations especially at the protein level still remain largely unexplored. In this study, the proteomics and phosphoproteomics of Cymbidium sinense leaf color variation mutants were studied. A total of 1059 differentially abundant proteins (DAPs) and 1127 differentially abundant phosphorylation sites belonging to 644 phosphoproteins (DAPPs) were identified in the yellow section of leaf variegation mutant of Cymbidium sinense (MY) compared with the green section (MG). Moreover, 349 co-expressing proteins were found in both omics' datasets, while only 26 proteins showed the same expression patterns in the two omics. The interaction network analysis of kinases and phosphatases showed that DAPs and DAPPs in photosynthesis, response to hormones, pigment metabolic process, phosphorylation, glucose metabolic process, and dephosphorylation might contribute to leaf color variation. The abundance of 28 Hsps and 28 phosphorylation sites belonging to 10 Hsps showed significant differences between MG and MY. CsHsp70 was selected to explore the function in Cymbidium sinense leaf variegation. The results showed CsHsp70 is essential for maintaining photosynthetic pigment content and the 399S phosphorylation site is crucial to the function of CsHsp70. Collectively, our findings construct a comprehensive coverage of protein and protein phosphorylation in leaf variegation of C. sinense, providing valuable insights into its formation mechanisms.
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Affiliation(s)
- Jie Gao
- Guangdong Key Laboratory of Ornamental Plant Germplasm Innovation and Utilization, Environmental Horticulture Research Institute, Guangdong Academy of Agricultural Sciences, Guangzhou 510640, China.
| | - Chuqiao Lu
- Guangdong Key Laboratory of Ornamental Plant Germplasm Innovation and Utilization, Environmental Horticulture Research Institute, Guangdong Academy of Agricultural Sciences, Guangzhou 510640, China.
| | - Yonglu Wei
- Guangdong Key Laboratory of Ornamental Plant Germplasm Innovation and Utilization, Environmental Horticulture Research Institute, Guangdong Academy of Agricultural Sciences, Guangzhou 510640, China.
| | - Qi Xie
- Guangdong Key Laboratory of Ornamental Plant Germplasm Innovation and Utilization, Environmental Horticulture Research Institute, Guangdong Academy of Agricultural Sciences, Guangzhou 510640, China.
| | - Jianpeng Jin
- Guangdong Key Laboratory of Ornamental Plant Germplasm Innovation and Utilization, Environmental Horticulture Research Institute, Guangdong Academy of Agricultural Sciences, Guangzhou 510640, China.
| | - Jie Li
- Guangdong Key Laboratory of Ornamental Plant Germplasm Innovation and Utilization, Environmental Horticulture Research Institute, Guangdong Academy of Agricultural Sciences, Guangzhou 510640, China.
| | - Fengxi Yang
- Guangdong Key Laboratory of Ornamental Plant Germplasm Innovation and Utilization, Environmental Horticulture Research Institute, Guangdong Academy of Agricultural Sciences, Guangzhou 510640, China.
| | - Genfa Zhu
- Guangdong Key Laboratory of Ornamental Plant Germplasm Innovation and Utilization, Environmental Horticulture Research Institute, Guangdong Academy of Agricultural Sciences, Guangzhou 510640, China.
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Zhou L, Fang L, Roth M, Papakonstantinou E, Tamm M, Stolz D. Heat-Induced Secretion of Heat Shock Proteins 70 and 90 Does not Affect the Expression of the Glucocorticoid Receptor in Primary Airway Cells in COPD. Lung 2024; 202:235-243. [PMID: 38641747 PMCID: PMC11143057 DOI: 10.1007/s00408-024-00680-8] [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: 12/10/2023] [Accepted: 02/02/2024] [Indexed: 04/21/2024]
Abstract
PURPOSE The response to glucocorticoids is hampered in many COPD patients by a yet unknown mechanism. Earlier we reported that short-term heat exposure of primary human bronchial epithelial cells (BEC) and airway smooth muscle cells (ASMC) of asthma patients increased the expression and secretion of extracellular heat shock proteins (eHSPs) resulting in increased expression of glucocorticoid receptor (GR) in BEC and inhibition of ASMC remodeling. The aim of the present study was to assess if the same mechanism is also present in primary airway wall cells of COPD patients. METHODS Primary BEC and ASMC were established from endobronchial biopsies obtained from COPD patients (n = 73), who participated in the HISTORIC study, an investigator-initiated and driven clinical trial. Secretion and protein expression of HSPs was assessed by ELISA and Western blotting. Expression of total GR, its isoforms GRα and GRβ and toll-like receptor 4 (TLR4) was determined by Western-blotting. RESULTS Short heat exposure (65 °C, 10 s) of BEC resulted in a significant increase of the secretion of eHSP70 and eHSP90, while the intracellular protein was not altered. Heat treatment or exposure to eHSP70 or eHSP90 had no effect on the expression of GR and GR-isoforms. However, eHSP70 and eHSP90 significantly reduced the expression of TLR4. CONCLUSIONS The results of this study indicate that primary airway cells from COPD patients respond differently to heat exposure and extracellular HSP70 or HSP90 than cells from asthma patients regarding the expression of GR and this may explain the reduced response to glucocorticoids in patients with COPD. TRIAL REGISTRATION ISRCTN11017699.
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Affiliation(s)
- Liang Zhou
- Department of Clinical Research, University Hospital Basel and University of Basel, CH-4031, Basel, Switzerland
| | - Lei Fang
- Department of Clinical Research, University Hospital Basel and University of Basel, CH-4031, Basel, Switzerland
| | - Michael Roth
- Department of Clinical Research, University Hospital Basel and University of Basel, CH-4031, Basel, Switzerland
| | - Eleni Papakonstantinou
- Department of Clinical Research, University Hospital Basel and University of Basel, CH-4031, Basel, Switzerland
- Clinic of Respiratory Medicine and Pulmonary Cell Research, University Hospital Basel, CH-4031, Basel, Switzerland
- Clinic of Respiratory Medicine, Medical Center-University of Freiburg, 79106, Freiburg, Germany
- Faculty of Medicine, University of Freiburg, 79106, Freiburg, Germany
| | - Michael Tamm
- Department of Clinical Research, University Hospital Basel and University of Basel, CH-4031, Basel, Switzerland
- Clinic of Respiratory Medicine and Pulmonary Cell Research, University Hospital Basel, CH-4031, Basel, Switzerland
| | - Daiana Stolz
- Department of Clinical Research, University Hospital Basel and University of Basel, CH-4031, Basel, Switzerland.
- Clinic of Respiratory Medicine and Pulmonary Cell Research, University Hospital Basel, CH-4031, Basel, Switzerland.
- Clinic of Respiratory Medicine, Medical Center-University of Freiburg, 79106, Freiburg, Germany.
- Faculty of Medicine, University of Freiburg, 79106, Freiburg, Germany.
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Marszalek J, Craig EA, Pitek M, Dutkiewicz R. Chaperone function in Fe-S protein biogenesis: Three possible scenarios. BIOCHIMICA ET BIOPHYSICA ACTA. MOLECULAR CELL RESEARCH 2024; 1871:119717. [PMID: 38574821 DOI: 10.1016/j.bbamcr.2024.119717] [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: 01/19/2024] [Revised: 02/22/2024] [Accepted: 03/25/2024] [Indexed: 04/06/2024]
Abstract
Among the six known iron‑sulfur (FeS) cluster biogenesis machineries that function across all domains of life only one involves a molecular chaperone system. This machinery, called ISC for 'iron sulfur cluster', functions in bacteria and in mitochondria of eukaryotes including humans. The chaperone system - a dedicated J-domain protein co-chaperone termed Hsc20 and its Hsp70 partner - is essential for proper ISC machinery function, interacting with the scaffold protein IscU which serves as a platform for cluster assembly and subsequent transfer onto recipient apo-proteins. Despite many years of research, surprisingly little is known about the specific role(s) that the chaperones play in the ISC machinery. Here we review three non-exclusive scenarios that range from involvement of the chaperones in the cluster transfer to regulation of the cellular levels of IscU itself.
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Affiliation(s)
- Jaroslaw Marszalek
- Intercollegiate Faculty of Biotechnology, University of Gdansk and Medical University of Gdansk, Gdansk, Poland.
| | - Elizabeth A Craig
- Department of Biochemistry, University of Wisconsin-Madison, Madison, WI, United States of America.
| | - Marcin Pitek
- Intercollegiate Faculty of Biotechnology, University of Gdansk and Medical University of Gdansk, Gdansk, Poland
| | - Rafal Dutkiewicz
- Intercollegiate Faculty of Biotechnology, University of Gdansk and Medical University of Gdansk, Gdansk, Poland
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8
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Clausen L, Okarmus J, Voutsinos V, Meyer M, Lindorff-Larsen K, Hartmann-Petersen R. PRKN-linked familial Parkinson's disease: cellular and molecular mechanisms of disease-linked variants. Cell Mol Life Sci 2024; 81:223. [PMID: 38767677 PMCID: PMC11106057 DOI: 10.1007/s00018-024-05262-8] [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: 02/27/2024] [Revised: 04/25/2024] [Accepted: 05/02/2024] [Indexed: 05/22/2024]
Abstract
Parkinson's disease (PD) is a common and incurable neurodegenerative disorder that arises from the loss of dopaminergic neurons in the substantia nigra and is mainly characterized by progressive loss of motor function. Monogenic familial PD is associated with highly penetrant variants in specific genes, notably the PRKN gene, where homozygous or compound heterozygous loss-of-function variants predominate. PRKN encodes Parkin, an E3 ubiquitin-protein ligase important for protein ubiquitination and mitophagy of damaged mitochondria. Accordingly, Parkin plays a central role in mitochondrial quality control but is itself also subject to a strict protein quality control system that rapidly eliminates certain disease-linked Parkin variants. Here, we summarize the cellular and molecular functions of Parkin, highlighting the various mechanisms by which PRKN gene variants result in loss-of-function. We emphasize the importance of high-throughput assays and computational tools for the clinical classification of PRKN gene variants and how detailed insights into the pathogenic mechanisms of PRKN gene variants may impact the development of personalized therapeutics.
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Affiliation(s)
- Lene Clausen
- Department of Biology, Linderstrøm-Lang Centre for Protein Science, University of Copenhagen, 2200, Copenhagen, Denmark
| | - Justyna Okarmus
- Department of Neurobiology Research, Institute of Molecular Medicine, University of Southern Denmark, 5230, Odense, Denmark
| | - Vasileios Voutsinos
- Department of Biology, Linderstrøm-Lang Centre for Protein Science, University of Copenhagen, 2200, Copenhagen, Denmark
| | - Morten Meyer
- Department of Neurobiology Research, Institute of Molecular Medicine, University of Southern Denmark, 5230, Odense, Denmark
- Department of Neurology, Odense University Hospital, 5000, Odense, Denmark
- Department of Clinical Research, BRIDGE, Brain Research Inter Disciplinary Guided Excellence, University of Southern Denmark, 5230, Odense, Denmark
| | - Kresten Lindorff-Larsen
- Department of Biology, Linderstrøm-Lang Centre for Protein Science, University of Copenhagen, 2200, Copenhagen, Denmark
| | - Rasmus Hartmann-Petersen
- Department of Biology, Linderstrøm-Lang Centre for Protein Science, University of Copenhagen, 2200, Copenhagen, Denmark.
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Felipe Perez R, Mochi G, Khan A, Woodford M. Mitochondrial Chaperone Code: Just warming up. Cell Stress Chaperones 2024; 29:483-496. [PMID: 38763405 PMCID: PMC11153887 DOI: 10.1016/j.cstres.2024.05.002] [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: 04/17/2024] [Revised: 05/13/2024] [Accepted: 05/14/2024] [Indexed: 05/21/2024] Open
Abstract
More than 99% of the mitochondrial proteome is encoded by the nucleus and requires refolding following import. Therefore, mitochondrial proteins require the coordinated action of molecular chaperones for their folding and activation. Several heat shock protein (Hsp) molecular chaperones, including members of the Hsp27, Hsp40/70, and Hsp90 families, as well as the chaperonin complex Hsp60/10 have an established role in mitochondrial protein import and folding. The "Chaperone Code" describes the regulation of chaperone activity by dynamic post-translational modifications; however, little is known about the post-translational regulation of mitochondrial chaperones. Dissecting the regulation of chaperone function is essential for understanding their differential regulation in pathogenic conditions and the potential development of efficacious therapeutic strategies. Here, we summarize the recent literature on post-translational regulation of mitochondrial chaperones, the consequences for mitochondrial function, and potential implications for disease.
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Affiliation(s)
- R Felipe Perez
- Department of Urology, Upstate Medical University, Syracuse, NY, USA
| | - Gianna Mochi
- Department of Urology, Upstate Medical University, Syracuse, NY, USA; Department of Biochemistry & Molecular Biology, Upstate Medical University, Syracuse, NY, USA; Upstate Cancer Center, State University of New York, Upstate Medical University, Syracuse, NY, USA
| | - Ariba Khan
- Department of Urology, Upstate Medical University, Syracuse, NY, USA
| | - Mark Woodford
- Department of Urology, Upstate Medical University, Syracuse, NY, USA; Department of Biochemistry & Molecular Biology, Upstate Medical University, Syracuse, NY, USA; Upstate Cancer Center, State University of New York, Upstate Medical University, Syracuse, NY, USA.
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10
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Jiang Y, Xu C, Cheng A, Wang M, Zhang W, Zhao X, Yang Q, Wu Y, Zhang S, Tian B, Huang J, Ou X, Sun D, He Y, Wu Z, Zhu D, Jia R, Chen S, Liu M. HSP70 positively regulates translation by interacting with the IRES and stabilizes the viral structural proteins VP1 and VP3 to facilitate duck hepatitis A virus type 1 replication. Vet Res 2024; 55:63. [PMID: 38760810 PMCID: PMC11100043 DOI: 10.1186/s13567-024-01315-9] [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: 01/17/2024] [Accepted: 03/28/2024] [Indexed: 05/19/2024] Open
Abstract
The maintenance of viral protein homeostasis depends on the interaction between host cell proteins and viral proteins. As a molecular chaperone, heat shock protein 70 (HSP70) has been shown to play an important role in viral infection. Our results showed that HSP70 can affect translation, replication, assembly, and release during the life cycle of duck hepatitis A virus type 1 (DHAV-1). We demonstrated that HSP70 can regulate viral translation by interacting with the DHAV-1 internal ribosome entry site (IRES). In addition, HSP70 interacts with the viral capsid proteins VP1 and VP3 and promotes their stability by inhibiting proteasomal degradation, thereby facilitating the assembly of DHAV-1 virions. This study demonstrates the specific role of HSP70 in regulating DHAV-1 replication, which are helpful for understanding the pathogenesis of DHAV-1 infection and provide additional information about the role of HSP70 in infection by different kinds of picornaviruses, as well as the interaction between picornaviruses and host cells.
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Affiliation(s)
- Yurui Jiang
- Engineering Research Center of Southwest Animal Disease Prevention and Control Technology, Ministry of Education of the People's Republic of China, Chengdu, 611130, China
- Key Laboratory of Animal Disease and Human Health of Sichuan Province, Chengdu, 611130, China
- International Joint Research Center for Animal Disease Prevention and Control of Sichuan Province, Chengdu, 611130, China
- Institute of Veterinary Medicine and Immunology, Sichuan Agricultural University, Chengdu, 611130, China
- Research Center of Avian Disease, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, 611130, China
| | - Chenxia Xu
- Engineering Research Center of Southwest Animal Disease Prevention and Control Technology, Ministry of Education of the People's Republic of China, Chengdu, 611130, China
- Key Laboratory of Animal Disease and Human Health of Sichuan Province, Chengdu, 611130, China
- International Joint Research Center for Animal Disease Prevention and Control of Sichuan Province, Chengdu, 611130, China
- Institute of Veterinary Medicine and Immunology, Sichuan Agricultural University, Chengdu, 611130, China
- Research Center of Avian Disease, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, 611130, China
| | - Anchun Cheng
- Engineering Research Center of Southwest Animal Disease Prevention and Control Technology, Ministry of Education of the People's Republic of China, Chengdu, 611130, China
- Key Laboratory of Animal Disease and Human Health of Sichuan Province, Chengdu, 611130, China
- International Joint Research Center for Animal Disease Prevention and Control of Sichuan Province, Chengdu, 611130, China
- Institute of Veterinary Medicine and Immunology, Sichuan Agricultural University, Chengdu, 611130, China
- Research Center of Avian Disease, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, 611130, China
| | - Mingshu Wang
- Engineering Research Center of Southwest Animal Disease Prevention and Control Technology, Ministry of Education of the People's Republic of China, Chengdu, 611130, China.
- Key Laboratory of Animal Disease and Human Health of Sichuan Province, Chengdu, 611130, China.
- International Joint Research Center for Animal Disease Prevention and Control of Sichuan Province, Chengdu, 611130, China.
- Institute of Veterinary Medicine and Immunology, Sichuan Agricultural University, Chengdu, 611130, China.
- Research Center of Avian Disease, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, 611130, China.
| | - Wei Zhang
- Sinopharm Yangzhou VAC Biological Engineering Co., Ltd., Yangzhou, 225100, China
| | - Xinxin Zhao
- Engineering Research Center of Southwest Animal Disease Prevention and Control Technology, Ministry of Education of the People's Republic of China, Chengdu, 611130, China
- Key Laboratory of Animal Disease and Human Health of Sichuan Province, Chengdu, 611130, China
- International Joint Research Center for Animal Disease Prevention and Control of Sichuan Province, Chengdu, 611130, China
- Institute of Veterinary Medicine and Immunology, Sichuan Agricultural University, Chengdu, 611130, China
- Research Center of Avian Disease, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, 611130, China
| | - Qiao Yang
- Engineering Research Center of Southwest Animal Disease Prevention and Control Technology, Ministry of Education of the People's Republic of China, Chengdu, 611130, China
- Key Laboratory of Animal Disease and Human Health of Sichuan Province, Chengdu, 611130, China
- International Joint Research Center for Animal Disease Prevention and Control of Sichuan Province, Chengdu, 611130, China
- Institute of Veterinary Medicine and Immunology, Sichuan Agricultural University, Chengdu, 611130, China
- Research Center of Avian Disease, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, 611130, China
| | - Ying Wu
- Engineering Research Center of Southwest Animal Disease Prevention and Control Technology, Ministry of Education of the People's Republic of China, Chengdu, 611130, China
- Key Laboratory of Animal Disease and Human Health of Sichuan Province, Chengdu, 611130, China
- International Joint Research Center for Animal Disease Prevention and Control of Sichuan Province, Chengdu, 611130, China
- Institute of Veterinary Medicine and Immunology, Sichuan Agricultural University, Chengdu, 611130, China
- Research Center of Avian Disease, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, 611130, China
| | - Shaqiu Zhang
- Engineering Research Center of Southwest Animal Disease Prevention and Control Technology, Ministry of Education of the People's Republic of China, Chengdu, 611130, China
- Key Laboratory of Animal Disease and Human Health of Sichuan Province, Chengdu, 611130, China
- International Joint Research Center for Animal Disease Prevention and Control of Sichuan Province, Chengdu, 611130, China
- Institute of Veterinary Medicine and Immunology, Sichuan Agricultural University, Chengdu, 611130, China
- Research Center of Avian Disease, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, 611130, China
| | - Bin Tian
- Engineering Research Center of Southwest Animal Disease Prevention and Control Technology, Ministry of Education of the People's Republic of China, Chengdu, 611130, China
- Key Laboratory of Animal Disease and Human Health of Sichuan Province, Chengdu, 611130, China
- International Joint Research Center for Animal Disease Prevention and Control of Sichuan Province, Chengdu, 611130, China
- Institute of Veterinary Medicine and Immunology, Sichuan Agricultural University, Chengdu, 611130, China
- Research Center of Avian Disease, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, 611130, China
| | - Juan Huang
- Engineering Research Center of Southwest Animal Disease Prevention and Control Technology, Ministry of Education of the People's Republic of China, Chengdu, 611130, China
- Key Laboratory of Animal Disease and Human Health of Sichuan Province, Chengdu, 611130, China
- International Joint Research Center for Animal Disease Prevention and Control of Sichuan Province, Chengdu, 611130, China
- Institute of Veterinary Medicine and Immunology, Sichuan Agricultural University, Chengdu, 611130, China
- Research Center of Avian Disease, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, 611130, China
| | - Xumin Ou
- Engineering Research Center of Southwest Animal Disease Prevention and Control Technology, Ministry of Education of the People's Republic of China, Chengdu, 611130, China
- Key Laboratory of Animal Disease and Human Health of Sichuan Province, Chengdu, 611130, China
- International Joint Research Center for Animal Disease Prevention and Control of Sichuan Province, Chengdu, 611130, China
- Institute of Veterinary Medicine and Immunology, Sichuan Agricultural University, Chengdu, 611130, China
- Research Center of Avian Disease, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, 611130, China
| | - Di Sun
- Engineering Research Center of Southwest Animal Disease Prevention and Control Technology, Ministry of Education of the People's Republic of China, Chengdu, 611130, China
- Key Laboratory of Animal Disease and Human Health of Sichuan Province, Chengdu, 611130, China
- International Joint Research Center for Animal Disease Prevention and Control of Sichuan Province, Chengdu, 611130, China
- Institute of Veterinary Medicine and Immunology, Sichuan Agricultural University, Chengdu, 611130, China
- Research Center of Avian Disease, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, 611130, China
| | - Yu He
- Engineering Research Center of Southwest Animal Disease Prevention and Control Technology, Ministry of Education of the People's Republic of China, Chengdu, 611130, China
- Key Laboratory of Animal Disease and Human Health of Sichuan Province, Chengdu, 611130, China
- International Joint Research Center for Animal Disease Prevention and Control of Sichuan Province, Chengdu, 611130, China
- Institute of Veterinary Medicine and Immunology, Sichuan Agricultural University, Chengdu, 611130, China
- Research Center of Avian Disease, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, 611130, China
| | - Zhen Wu
- Engineering Research Center of Southwest Animal Disease Prevention and Control Technology, Ministry of Education of the People's Republic of China, Chengdu, 611130, China
- Key Laboratory of Animal Disease and Human Health of Sichuan Province, Chengdu, 611130, China
- International Joint Research Center for Animal Disease Prevention and Control of Sichuan Province, Chengdu, 611130, China
- Institute of Veterinary Medicine and Immunology, Sichuan Agricultural University, Chengdu, 611130, China
- Research Center of Avian Disease, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, 611130, China
| | - Dekang Zhu
- Engineering Research Center of Southwest Animal Disease Prevention and Control Technology, Ministry of Education of the People's Republic of China, Chengdu, 611130, China
- Key Laboratory of Animal Disease and Human Health of Sichuan Province, Chengdu, 611130, China
- International Joint Research Center for Animal Disease Prevention and Control of Sichuan Province, Chengdu, 611130, China
- Research Center of Avian Disease, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, 611130, China
| | - Renyong Jia
- Engineering Research Center of Southwest Animal Disease Prevention and Control Technology, Ministry of Education of the People's Republic of China, Chengdu, 611130, China
- Key Laboratory of Animal Disease and Human Health of Sichuan Province, Chengdu, 611130, China
- International Joint Research Center for Animal Disease Prevention and Control of Sichuan Province, Chengdu, 611130, China
- Institute of Veterinary Medicine and Immunology, Sichuan Agricultural University, Chengdu, 611130, China
- Research Center of Avian Disease, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, 611130, China
| | - Shun Chen
- Engineering Research Center of Southwest Animal Disease Prevention and Control Technology, Ministry of Education of the People's Republic of China, Chengdu, 611130, China
- Key Laboratory of Animal Disease and Human Health of Sichuan Province, Chengdu, 611130, China
- International Joint Research Center for Animal Disease Prevention and Control of Sichuan Province, Chengdu, 611130, China
- Institute of Veterinary Medicine and Immunology, Sichuan Agricultural University, Chengdu, 611130, China
- Research Center of Avian Disease, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, 611130, China
| | - Mafeng Liu
- Engineering Research Center of Southwest Animal Disease Prevention and Control Technology, Ministry of Education of the People's Republic of China, Chengdu, 611130, China
- Key Laboratory of Animal Disease and Human Health of Sichuan Province, Chengdu, 611130, China
- International Joint Research Center for Animal Disease Prevention and Control of Sichuan Province, Chengdu, 611130, China
- Institute of Veterinary Medicine and Immunology, Sichuan Agricultural University, Chengdu, 611130, China
- Research Center of Avian Disease, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, 611130, China
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11
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Wu X, Zhang Z, Cui W, Han L, Liu Z, Song X, Tan J. The analysis of inducible family members in the water flea Daphnia magna led to the identification of an uncharacterized lineage of heat shock protein 70. Heliyon 2024; 10:e30288. [PMID: 38765176 PMCID: PMC11098801 DOI: 10.1016/j.heliyon.2024.e30288] [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: 12/11/2023] [Revised: 04/21/2024] [Accepted: 04/23/2024] [Indexed: 05/21/2024] Open
Abstract
To explore the function and evolutionary relationships of inducible heat shock protein 70 (Hsp70) in Daphnia magna, cDNAs of four Hsp70 family members (DmaHsp70, DmaHsp70-2, DmaHsp70-12, DmaHsp70-14) were cloned. While all DmaHsp70s possess three function domains, it is noteworthy that only DmaHsp70 ends with a "EEVD" motif. Phylogenetic analysis indicates that the Hsp70-12 lineage is distanced from the rest, and therefore it is an uncharacterized lineage of Hsp70. The differences in isoelectric point and 3-dimensional (3D) conformation of the N-terminal nucleotide binding domain (NBD) of DmaHsp70s further support the theory. DmaHsp70s exhibit varied motif distribution patterns and the logo sequences of motifs have diverse signature characteristics, indicating that different mechanisms are involved in the regulation of ATP binding and hydrolysis for the DmaHsp70s. Protein-protein network together with the predicted subcellular locations of DmaHsp70s suggest that they likely fulfill distinct roles in cells. The transcription of four DmaHsp70s were changed during the recovery stage after thermal stress or oxidative stress. But the expression pattern of them were dissimilar. Collectively, these results collectively elucidated the identification of a previously uncharacterizedHsp70 lineage in animal and extended our understanding of the Hsp70 family.
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Affiliation(s)
- Xiangyang Wu
- Laboratory of Comparative Immunology, School of Marine Science and Engineering, Qingdao Agricultural University, Qingdao, 266109, China
| | - Zhiwei Zhang
- Laboratory of Comparative Immunology, School of Marine Science and Engineering, Qingdao Agricultural University, Qingdao, 266109, China
| | - Wenfeng Cui
- Laboratory of Comparative Immunology, School of Marine Science and Engineering, Qingdao Agricultural University, Qingdao, 266109, China
| | - Linfei Han
- Laboratory of Comparative Immunology, School of Marine Science and Engineering, Qingdao Agricultural University, Qingdao, 266109, China
| | - Zijie Liu
- Laboratory of Comparative Immunology, School of Marine Science and Engineering, Qingdao Agricultural University, Qingdao, 266109, China
| | - Xiaojun Song
- Laboratory of Comparative Immunology, School of Marine Science and Engineering, Qingdao Agricultural University, Qingdao, 266109, China
| | - Jiabo Tan
- Laboratory of Comparative Immunology, School of Marine Science and Engineering, Qingdao Agricultural University, Qingdao, 266109, China
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12
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Morizono MA, McGuire KL, Birouty NI, Herzik MA. Structural insights into GrpEL1-mediated nucleotide and substrate release of human mitochondrial Hsp70. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2024:2024.05.10.593630. [PMID: 38798347 PMCID: PMC11118385 DOI: 10.1101/2024.05.10.593630] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/29/2024]
Abstract
Maintenance of protein homeostasis is necessary for cell viability and depends on a complex network of chaperones and co-chaperones, including the heat-shock protein 70 (Hsp70) system. In human mitochondria, mitochondrial Hsp70 (mortalin) and the nucleotide exchange factor (GrpEL1) work synergistically to stabilize proteins, assemble protein complexes, and facilitate protein import. However, our understanding of the molecular mechanisms guiding these processes is hampered by limited structural information. To elucidate these mechanistic details, we used cryoEM to determine the first structures of full-length human mortalin-GrpEL1 complexes in previously unobserved states. Our structures and molecular dynamics simulations allow us to delineate specific roles for mortalin-GrpEL1 interfaces and to identify steps in GrpEL1-mediated nucleotide and substrate release by mortalin. Subsequent analyses reveal conserved mechanisms across bacteria and mammals and facilitate a complete understanding of sequential nucleotide and substrate release for the Hsp70 chaperone system.
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Affiliation(s)
- Marc A. Morizono
- Department of Chemistry and Biochemistry, University of California, San Diego, California, USA
| | - Kelly L. McGuire
- Department of Chemistry and Biochemistry, University of California, San Diego, California, USA
| | - Natalie I. Birouty
- Department of Chemistry and Biochemistry, University of California, San Diego, California, USA
| | - Mark A. Herzik
- Department of Chemistry and Biochemistry, University of California, San Diego, California, USA
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13
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Laghmani K. Protein Quality Control of NKCC2 in Bartter Syndrome and Blood Pressure Regulation. Cells 2024; 13:818. [PMID: 38786040 PMCID: PMC11120568 DOI: 10.3390/cells13100818] [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: 04/01/2024] [Revised: 05/03/2024] [Accepted: 05/09/2024] [Indexed: 05/25/2024] Open
Abstract
Mutations in NKCC2 generate antenatal Bartter syndrome type 1 (type 1 BS), a life-threatening salt-losing nephropathy characterized by arterial hypotension, as well as electrolyte abnormalities. In contrast to the genetic inactivation of NKCC2, inappropriate increased NKCC2 activity has been associated with salt-sensitive hypertension. Given the importance of NKCC2 in salt-sensitive hypertension and the pathophysiology of prenatal BS, studying the molecular regulation of this Na-K-2Cl cotransporter has attracted great interest. Therefore, several studies have addressed various aspects of NKCC2 regulation, such as phosphorylation and post-Golgi trafficking. However, the regulation of this cotransporter at the pre-Golgi level remained unknown for years. Similar to several transmembrane proteins, export from the ER appears to be the rate-limiting step in the cotransporter's maturation and trafficking to the plasma membrane. The most compelling evidence comes from patients with type 5 BS, the most severe form of prenatal BS, in whom NKCC2 is not detectable in the apical membrane of thick ascending limb (TAL) cells due to ER retention and ER-associated degradation (ERAD) mechanisms. In addition, type 1 BS is one of the diseases linked to ERAD pathways. In recent years, several molecular determinants of NKCC2 export from the ER and protein quality control have been identified. The aim of this review is therefore to summarize recent data regarding the protein quality control of NKCC2 and to discuss their potential implications in BS and blood pressure regulation.
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Affiliation(s)
- Kamel Laghmani
- Centre de Recherche des Cordeliers, INSERM, Sorbonne Université, Université de Paris, F-75006 Paris, France;
- CNRS, ERL8228, F-75006 Paris, France
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14
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Shoup D, Priola SA. Grp78 destabilization of infectious prions is strain-specific and modified by multiple factors including accessory chaperones and pH. J Biol Chem 2024; 300:107346. [PMID: 38718859 DOI: 10.1016/j.jbc.2024.107346] [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: 12/18/2023] [Revised: 04/01/2024] [Accepted: 04/22/2024] [Indexed: 06/03/2024] Open
Abstract
Lethal neurodegenerative prion diseases result from the continuous accumulation of infectious and variably protease-resistant prion protein aggregates (PrPD) which are misfolded forms of the normally detergent soluble and protease-sensitive cellular prion protein. Molecular chaperones like Grp78 have been found to reduce the accumulation of PrPD, but how different cellular environments and other chaperones influence the ability of Grp78 to modify PrPD is poorly understood. In this work, we investigated how pH and protease-mediated structural changes in PrPD from two mouse-adapted scrapie prion strains, 22L and 87V, influenced processing by Grp78 in the presence or absence of chaperones Hsp90, DnaJC1, and Stip1. We developed a cell-free in vitro system to monitor chaperone-mediated structural changes to, and disaggregation of, PrPD. For both strains, Grp78 was most effective at structurally altering PrPD at low pH, especially when additional chaperones were present. While Grp78, DnaJC1, Stip1, and Hsp90 were unable to disaggregate the majority of PrPD from either strain, pretreatment of PrPD with proteases increased disaggregation of 22L PrPD compared to 87V, indicating strain-specific differences in aggregate structure were impacting chaperone activity. Hsp90 also induced structural changes in 87V PrPD as indicated by an increase in the susceptibility of its n-terminus to proteases. Our data suggest that, while chaperones like Grp78, DnaJC1, Stip1, and Hsp90 disaggregate only a small fraction of PrPD, they may still facilitate its clearance by altering aggregate structure and sensitizing PrPD to proteases in a strain and pH-dependent manner.
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Affiliation(s)
- Daniel Shoup
- Rocky Mountain Laboratories, Laboratory of Neurological Infections and Immunity, National Institute of Allergy & Infectious Diseases, National Institutes of Health, Hamilton, Montana, USA.
| | - Suzette A Priola
- Rocky Mountain Laboratories, Laboratory of Neurological Infections and Immunity, National Institute of Allergy & Infectious Diseases, National Institutes of Health, Hamilton, Montana, USA
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15
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Fatmila DT, Pardede BP, Maulana T, Said S, Yudi Y, Purwantara B. Sperm HSP70: may not be an age-dependent gene but is associated with field fertility in Bali bulls ( Bos sondaicus). Anim Reprod 2024; 21:e20230048. [PMID: 38756622 PMCID: PMC11095850 DOI: 10.1590/1984-3143-ar2023-0048] [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: 04/27/2023] [Accepted: 03/11/2024] [Indexed: 05/18/2024] Open
Abstract
This study aimed to analyze the characteristics of the HSP70 gene and protein in spermatozoa of Bali bulls of different age groups and to examine its potential as a biomarker determining bull fertility. This study used frozen semen produced from six Bali bulls divided into two groups based on age (≤ 9 years and ≥ 12 years). Parameters of frozen semen quality analyzed included sperm motility and kinetics using computer-assisted semen analysis, sperm morphological defects using Diff-Quick staining, acrosome integrity using FITC-PNA staining, and DNA fragmentation using acridine orange staining. HSP70 gene expression characterization was analyzed using qRT-PCR, and HSP70 protein abundance was analyzed using enzyme immunoassays. Fertility field data were obtained by analyzing the percentage conception rate for each bull based on the artificial insemination service data contained in the Indonesian-integrated system of the National Animal Health Information System (iSIKHNAS). The results showed significant differences (P<0.05) in total and progressive motility, morphological defects of the neck and midpiece, and tail of sperm, and acrosome integrity between the age groups of Bali bulls. HSP70 gene expression and protein abundance showed no significant differences (P>0.05) in different age groups. HSP70 gene expression correlated with fertility rate (P<0.05). Age affected several semen quality parameters but did not affect HSP70 gene expression and protein abundance. The HSP70 gene molecule could be a biomarker that determines the fertility of Bali bulls.
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Affiliation(s)
- Dian Tria Fatmila
- Study Program of Animal Science, Faculty of Agriculture, Universitas Sumatera Utara, Medan, Indonesia
| | | | - Tulus Maulana
- Research Center for Applied Zoology, National Research and Innovation Agency, Bogor, Indonesia
| | - Syahruddin Said
- Research Center for Applied Zoology, National Research and Innovation Agency, Bogor, Indonesia
| | - Yudi Yudi
- Division of Reproduction and Obstetrics, School of Veterinary Medicine and Biomedical Sciences, IPB University, Bogor, Indonesia
| | - Bambang Purwantara
- Division of Reproduction and Obstetrics, School of Veterinary Medicine and Biomedical Sciences, IPB University, Bogor, Indonesia
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Fang S, Wang H, Qiu K, Pang Y, Li C, Liang X. The fungicide pyraclostrobin affects gene expression by altering the DNA methylation pattern in Magnaporthe oryzae. FRONTIERS IN PLANT SCIENCE 2024; 15:1391900. [PMID: 38745924 PMCID: PMC11091397 DOI: 10.3389/fpls.2024.1391900] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/26/2024] [Accepted: 04/17/2024] [Indexed: 05/16/2024]
Abstract
Introduction Rice blast disease caused by Magnaporthe oryzae has long been the main cause of rice (Oryza sativa L.) yield reduction worldwide. The quinone external inhibitor pyraclostrobin is widely used as a fungicide to effectively control the spread of pathogenic fungi, including M. oryzae. However, M. oryzae can develop resistance through multiple levels of mutation, such as target protein cytb mutation G143A/S, leading to a decrease in the effectiveness of the biocide after a period of application. Therefore, uncovering the possible mutational mechanisms from multiple perspectives will further provide feasible targets for drug development. Methods In this work, we determined the gene expression changes in M. oryzae in response to pyraclostrobin stress and their relationship with DNA methylation by transcriptome and methylome. Results The results showed that under pyraclostrobin treatment, endoplasmic reticulum (ER)-associated and ubiquitin-mediated proteolysis were enhanced, suggesting that more aberrant proteins may be generated that need to be cleared. DNA replication and repair processes were inhibited. Glutathione metabolism was enhanced, while lipid metabolism was impaired. The number of alternative splicing events increased. These changes may be related to the elevated methylation levels of cytosine and adenine in gene bodies. Both hypermethylation and hypomethylation of differentially methylated genes (DMGs) mainly occurred in exons and promoters. Some DMGs and differentially expressed genes (DEGs) were annotated to the same pathways by GO and KEGG, including protein processing in the ER, ubiquitin-mediated proteolysis, RNA transport and glutathione metabolism, suggesting that pyraclostrobin may affect gene expression by altering the methylation patterns of cytosine and adenine. Discussion Our results revealed that 5mC and 6mA in the gene body are associated with gene expression and contribute to adversity adaptation in M. oryzae. This enriched the understanding for potential mechanism of quinone inhibitor resistance, which will facilitate the development of feasible strategies for maintaining the high efficacy of this kind of fungicide.
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Affiliation(s)
- Shumei Fang
- Heilongjiang Plant Growth Regulator Engineering Technology Research Center, College of Agriculture, Heilongjiang Bayi Agricultural University, Daqing, China
- Heilongjiang Provincial Key Laboratory of Environmental Microbiology and Recycling of Argo-Waste in Cold Region, College of Life Science and Biotechnology, Heilongjiang Bayi Agricultural University, Daqing, China
| | - Hanxin Wang
- Heilongjiang Provincial Key Laboratory of Environmental Microbiology and Recycling of Argo-Waste in Cold Region, College of Life Science and Biotechnology, Heilongjiang Bayi Agricultural University, Daqing, China
| | - Kaihua Qiu
- Heilongjiang Plant Growth Regulator Engineering Technology Research Center, College of Agriculture, Heilongjiang Bayi Agricultural University, Daqing, China
| | - Yuanyuan Pang
- Heilongjiang Provincial Key Laboratory of Environmental Microbiology and Recycling of Argo-Waste in Cold Region, College of Life Science and Biotechnology, Heilongjiang Bayi Agricultural University, Daqing, China
| | - Chen Li
- Heilongjiang Plant Growth Regulator Engineering Technology Research Center, College of Agriculture, Heilongjiang Bayi Agricultural University, Daqing, China
| | - Xilong Liang
- Heilongjiang Plant Growth Regulator Engineering Technology Research Center, College of Agriculture, Heilongjiang Bayi Agricultural University, Daqing, China
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17
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Kinger S, Jagtap YA, Kumar P, Choudhary A, Prasad A, Prajapati VK, Kumar A, Mehta G, Mishra A. Proteostasis in neurodegenerative diseases. Adv Clin Chem 2024; 121:270-333. [PMID: 38797543 DOI: 10.1016/bs.acc.2024.04.002] [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: 05/29/2024]
Abstract
Proteostasis is essential for normal function of proteins and vital for cellular health and survival. Proteostasis encompasses all stages in the "life" of a protein, that is, from translation to functional performance and, ultimately, to degradation. Proteins need native conformations for function and in the presence of multiple types of stress, their misfolding and aggregation can occur. A coordinated network of proteins is at the core of proteostasis in cells. Among these, chaperones are required for maintaining the integrity of protein conformations by preventing misfolding and aggregation and guide those with abnormal conformation to degradation. The ubiquitin-proteasome system (UPS) and autophagy are major cellular pathways for degrading proteins. Although failure or decreased functioning of components of this network can lead to proteotoxicity and disease, like neuron degenerative diseases, underlying factors are not completely understood. Accumulating misfolded and aggregated proteins are considered major pathomechanisms of neurodegeneration. In this chapter, we have described the components of three major branches required for proteostasis-chaperones, UPS and autophagy, the mechanistic basis of their function, and their potential for protection against various neurodegenerative conditions, like Alzheimer's, Parkinson's, and Huntington's disease. The modulation of various proteostasis network proteins, like chaperones, E3 ubiquitin ligases, proteasome, and autophagy-associated proteins as therapeutic targets by small molecules as well as new and unconventional approaches, shows promise.
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Affiliation(s)
- Sumit Kinger
- Cellular and Molecular Neurobiology Unit, Indian Institute of Technology Jodhpur, Rajasthan, India
| | - Yuvraj Anandrao Jagtap
- Cellular and Molecular Neurobiology Unit, Indian Institute of Technology Jodhpur, Rajasthan, India
| | - Prashant Kumar
- Cellular and Molecular Neurobiology Unit, Indian Institute of Technology Jodhpur, Rajasthan, India
| | - Akash Choudhary
- Cellular and Molecular Neurobiology Unit, Indian Institute of Technology Jodhpur, Rajasthan, India
| | - Amit Prasad
- School of Biosciences and Bioengineering, Indian Institute of Technology Mandi, Mandi, Himachal Pradesh, India
| | - Vijay Kumar Prajapati
- Department of Biochemistry, University of Delhi South Campus, Dhaula Kuan, New Delhi, India
| | - Amit Kumar
- Department of Biosciences and Biomedical Engineering, Indian Institute of Technology Indore, Simrol, Indore, Madhya Pradesh, India
| | - Gunjan Mehta
- Department of Biotechnology, Indian Institute of Technology Hyderabad, Telangana, India
| | - Amit Mishra
- Cellular and Molecular Neurobiology Unit, Indian Institute of Technology Jodhpur, Rajasthan, India.
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18
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Bao S, Yi M, Xiang B, Chen P. Antitumor mechanisms and future clinical applications of the natural product triptolide. Cancer Cell Int 2024; 24:150. [PMID: 38678240 PMCID: PMC11055311 DOI: 10.1186/s12935-024-03336-y] [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: 11/15/2023] [Accepted: 04/18/2024] [Indexed: 04/29/2024] Open
Abstract
Triptolide (TPL) is a compound sourced from Tripterygium wilfordii Hook. F., a traditional Chinese medicinal herb recognized for its impressive anti-inflammatory, anti-angiogenic, immunosuppressive, and antitumor qualities. Notwithstanding its favorable attributes, the precise mechanism through which TPL influences tumor cells remains enigmatic. Its toxicity and limited water solubility significantly impede the clinical application of TPL. We offer a comprehensive overview of recent research endeavors aimed at unraveling the antitumor mechanism of TPL in this review. Additionally, we briefly discuss current strategies to effectively manage the challenges associated with TPL in future clinical applications. By compiling this information, we aim to enhance the understanding of the underlying mechanisms involved in TPL and identify potential avenues for further advancement in antitumor therapy.
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Affiliation(s)
- Shiwei Bao
- NHC Key Laboratory of Carcinogenesis, Hunan Provincial Cancer Hospital and the Affiliated Cancer Hospital of Xiangya School of Medicine, Central South University, Changsha, 410013, Hunan, China
- The Key Laboratory of Carcinogenesis and Cancer Invasion of the Chinese Ministry of Education, Cancer Research Institute, School of Basic Medical Sciences, Central South University, Changsha, 410078, Hunan, China
- FuRong Laboratory, Changsha, 410078, Hunan, China
- Hunan Key Laboratory of Nonresolving Inflammation and Cancer, The Third Xiangya Hospital, Central South University, Changsha, 410013, Hunan, China
| | - Mei Yi
- Department of Dermatology, Xiangya Hospital, Central South University, Changsha, 410008, Hunan, China
| | - Bo Xiang
- NHC Key Laboratory of Carcinogenesis, Hunan Provincial Cancer Hospital and the Affiliated Cancer Hospital of Xiangya School of Medicine, Central South University, Changsha, 410013, Hunan, China.
- The Key Laboratory of Carcinogenesis and Cancer Invasion of the Chinese Ministry of Education, Cancer Research Institute, School of Basic Medical Sciences, Central South University, Changsha, 410078, Hunan, China.
- FuRong Laboratory, Changsha, 410078, Hunan, China.
- Hunan Key Laboratory of Nonresolving Inflammation and Cancer, The Third Xiangya Hospital, Central South University, Changsha, 410013, Hunan, China.
| | - Pan Chen
- NHC Key Laboratory of Carcinogenesis, Hunan Provincial Cancer Hospital and the Affiliated Cancer Hospital of Xiangya School of Medicine, Central South University, Changsha, 410013, Hunan, China.
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19
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Guo Y, Stampoultzis T, Karami P, Nasrollahzadeh N, Rana VK, Pioletti DP. HSP70-A key regulator in chondrocyte homeostasis under naturally coupled hydrostatic pressure-thermal stimuli. Osteoarthritis Cartilage 2024:S1063-4584(24)01164-6. [PMID: 38679285 DOI: 10.1016/j.joca.2024.04.008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/07/2023] [Revised: 04/15/2024] [Accepted: 04/21/2024] [Indexed: 05/01/2024]
Abstract
OBJECTIVE During physical activities, chondrocytes experience coupled stimulation of hydrostatic pressure (HP) and a transient increase in temperature (T), with the latter varying within a physiological range from 32.5 °C to 38.7 °C. Previous short-term in vitro studies have demonstrated that the combined hydrostatic pressure-thermal (HP-T) stimuli more significantly enhance chondroinduction and chondroprotection of chondrocytes than isolated applications. Interestingly, this combined benefit is associated with a corresponding increase in HSP70 levels when HP and T are combined. The current study therefore explored the indispensable role of HSP70 in mediating the combined effects of HP-T stimuli on chondrocytes. DESIGN In this mid-long-term study of in vitro engineered cartilage constructs, we assessed chondrocyte responses to HP-T stimuli using customized bioreactor in standard and HSP70-inhibited cultures. RESULTS Surprisingly, under HSP70-inhibited conditions, the usually beneficial HP-T stimuli, especially its thermal component, exerted detrimental effects on chondrocyte homeostasis, showing a distinct and unfavorable shift in gene and protein expression patterns compared to non-HSP70-inhibited settings. Such effects were corroborated through mechanical testing and confirmed using a secondary cell source. A proteomic-based mechanistic analysis revealed a disruption in the balance between biosynthesis and fundamental cellular structural components in HSP70-inhibited conditions under HP-T stimuli. CONCLUSIONS Our results highlight the critical role of sufficient HSP70 induction in mediating the beneficial effects of coupled HP-T stimulation on chondrocytes. These findings help pave the way for new therapeutic approaches to enhance physiotherapy outcomes and potentially shed light on the elusive mechanisms underlying the onset of cartilage degeneration, a long-standing enigma in orthopedics.
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Affiliation(s)
- Yanheng Guo
- Laboratory of Biomechanical Orthopedics, Institute of Bioengineering, EPFL, Switzerland
| | | | - Peyman Karami
- Laboratory of Biomechanical Orthopedics, Institute of Bioengineering, EPFL, Switzerland
| | - Naser Nasrollahzadeh
- Laboratory of Biomechanical Orthopedics, Institute of Bioengineering, EPFL, Switzerland
| | - Vijay K Rana
- Laboratory of Biomechanical Orthopedics, Institute of Bioengineering, EPFL, Switzerland
| | - Dominique P Pioletti
- Laboratory of Biomechanical Orthopedics, Institute of Bioengineering, EPFL, Switzerland.
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20
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Li X, Zhu M. Genome-wide identification of the Hsp70 gene family in Penaeus chinensis and their response to environmental stress. Anim Biotechnol 2024:2344205. [PMID: 38651890 DOI: 10.1080/10495398.2024.2344205] [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: 04/25/2024]
Abstract
The heat shock protein 70 (HSP70) gene family plays a crucial role in the response of organisms to environmental stress. However, it has not been systematically characterized in shrimp. In this study, we identified 25 PcHsp70 genes in the Penaeus chinensis genome. The encoded proteins were categorized into six subgroups based on phylogenetic relationships. Tandem duplication was the main driver of amplification in the PcHsp70 family, and the genes have experienced strong purifying selection during evolution. Transcriptome data analysis revealed that the 25 PcHsp70 members have different expression patterns in shrimp under conditions of low temperature, low salinity, and white spot syndrome virus infection. Among them, PcHsp70.11 was significantly induced under all three stress conditions, suggesting that this gene plays an important role in response to environmental stress in P. chinensis. To the best of our knowledge, this is the first study to systematically analyze the Hsp70 gene family in shrimp. The results provide important information on shrimp Hsp70s, contributing to a better understanding of the role of these genes in environmental stress and providing a basis for further functional studies.
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Affiliation(s)
- Xinran Li
- School of Biological Science and Technology, Liupanshui Normal University, Liupanshui, China
| | - Miao Zhu
- School of Biological Science and Technology, Liupanshui Normal University, Liupanshui, China
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21
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Buggiani J, Meinnel T, Giglione C, Frottin F. Advances in nuclear proteostasis of metazoans. Biochimie 2024:S0300-9084(24)00081-6. [PMID: 38642824 DOI: 10.1016/j.biochi.2024.04.006] [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: 01/29/2024] [Revised: 04/12/2024] [Accepted: 04/16/2024] [Indexed: 04/22/2024]
Abstract
The proteostasis network and associated protein quality control (PQC) mechanisms ensure proteome functionality and are essential for cell survival. A distinctive feature of eukaryotic cells is their high degree of compartmentalization, requiring specific and adapted proteostasis networks for each compartment. The nucleus, essential for maintaining the integrity of genetic information and gene transcription, is one such compartment. While PQC mechanisms have been investigated for decades in the cytoplasm and the endoplasmic reticulum, our knowledge of nuclear PQC pathways is only emerging. Recent developments in the field have underscored the importance of spatially managing aberrant proteins within the nucleus. Upon proteotoxic stress, misfolded proteins and PQC effectors accumulate in various nuclear membrane-less organelles. Beyond bringing together effectors and substrates, the biophysical properties of these organelles allow novel PQC functions. In this review, we explore the specificity of the nuclear compartment, the effectors of the nuclear proteostasis network, and the PQC roles of nuclear membrane-less organelles in metazoans.
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Affiliation(s)
- Julia Buggiani
- Institute for Integrative Biology of the Cell (I2BC), Université Paris-Saclay, CEA, CNRS, Gif-sur-Yvette, France
| | - Thierry Meinnel
- Institute for Integrative Biology of the Cell (I2BC), Université Paris-Saclay, CEA, CNRS, Gif-sur-Yvette, France
| | - Carmela Giglione
- Institute for Integrative Biology of the Cell (I2BC), Université Paris-Saclay, CEA, CNRS, Gif-sur-Yvette, France
| | - Frédéric Frottin
- Institute for Integrative Biology of the Cell (I2BC), Université Paris-Saclay, CEA, CNRS, Gif-sur-Yvette, France.
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22
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Zoltsman G, Dang TL, Kuchersky M, Faust O, Silva MS, Ilani T, Wentink AS, Bukau B, Rosenzweig R. A unique chaperoning mechanism in class A JDPs recognizes and stabilizes mutant p53. Mol Cell 2024; 84:1512-1526.e9. [PMID: 38508184 DOI: 10.1016/j.molcel.2024.02.018] [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: 02/22/2023] [Revised: 12/14/2023] [Accepted: 02/20/2024] [Indexed: 03/22/2024]
Abstract
J-domain proteins (JDPs) constitute a large family of molecular chaperones that bind a broad spectrum of substrates, targeting them to Hsp70, thus determining the specificity of and activating the entire chaperone functional cycle. The malfunction of JDPs is therefore inextricably linked to myriad human disorders. Here, we uncover a unique mechanism by which chaperones recognize misfolded clients, present in human class A JDPs. Through a newly identified β-hairpin site, these chaperones detect changes in protein dynamics at the initial stages of misfolding, prior to exposure of hydrophobic regions or large structural rearrangements. The JDPs then sequester misfolding-prone proteins into large oligomeric assemblies, protecting them from aggregation. Through this mechanism, class A JDPs bind destabilized p53 mutants, preventing clearance of these oncoproteins by Hsp70-mediated degradation, thus promoting cancer progression. Removal of the β-hairpin abrogates this protective activity while minimally affecting other chaperoning functions. This suggests the class A JDP β-hairpin as a highly specific target for cancer therapeutics.
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Affiliation(s)
- Guy Zoltsman
- Department of Chemical and Structural Biology, Weizmann Institute of Science, Rehovot 761000, Israel
| | - Thi Lieu Dang
- Center for Molecular Biology of Heidelberg University (ZMBH) and German Cancer Research Center (DKFZ), DKFZ-ZMBH-Alliance, Im Neuenheimer Feld 282, Heidelberg 69120, Germany
| | - Miriam Kuchersky
- Department of Chemical and Structural Biology, Weizmann Institute of Science, Rehovot 761000, Israel
| | - Ofrah Faust
- Department of Chemical and Structural Biology, Weizmann Institute of Science, Rehovot 761000, Israel
| | - Micael S Silva
- Department of Chemical and Structural Biology, Weizmann Institute of Science, Rehovot 761000, Israel
| | - Tal Ilani
- Department of Chemical and Structural Biology, Weizmann Institute of Science, Rehovot 761000, Israel
| | - Anne S Wentink
- Center for Molecular Biology of Heidelberg University (ZMBH) and German Cancer Research Center (DKFZ), DKFZ-ZMBH-Alliance, Im Neuenheimer Feld 282, Heidelberg 69120, Germany; Leiden Institute of Chemistry, Leiden University, Einsteinweg 55, 2333CC Leiden, the Netherlands
| | - Bernd Bukau
- Center for Molecular Biology of Heidelberg University (ZMBH) and German Cancer Research Center (DKFZ), DKFZ-ZMBH-Alliance, Im Neuenheimer Feld 282, Heidelberg 69120, Germany.
| | - Rina Rosenzweig
- Department of Chemical and Structural Biology, Weizmann Institute of Science, Rehovot 761000, Israel.
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23
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Pan Z, Zhuo L, Wan TY, Chen RY, Li YZ. DnaK duplication and specialization in bacteria correlates with increased proteome complexity. mSystems 2024; 9:e0115423. [PMID: 38530057 PMCID: PMC11019930 DOI: 10.1128/msystems.01154-23] [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: 10/28/2023] [Accepted: 03/10/2024] [Indexed: 03/27/2024] Open
Abstract
The chaperone 70 kDa heat shock protein (Hsp70) is important for cells from bacteria to humans to maintain proteostasis, and all eukaryotes and several prokaryotes encode Hsp70 paralogs. Although the mechanisms of Hsp70 function have been clearly illuminated, the function and evolution of Hsp70 paralogs is not well studied. DnaK is a highly conserved bacterial Hsp70 family. Here, we show that dnaK is present in 98.9% of bacterial genomes, and 6.4% of them possess two or more DnaK paralogs. We found that the duplication of dnaK is positively correlated with an increase in proteomic complexity (proteome size, number of domains). We identified the interactomes of the two DnaK paralogs of Myxococcus xanthus DK1622 (MxDnaKs), which revealed that they are mostly nonoverlapping, although both prefer α and β domain proteins. Consistent with the entire M. xanthus proteome, MxDnaK substrates have both significantly more multi-domain proteins and a higher isoelectric point than that of Escherichia coli, which encodes a single DnaK homolog. MxDnaK1 is transcriptionally upregulated in response to heat shock and prefers to bind cytosolic proteins, while MxDnaK2 is downregulated by heat shock and is more associated with membrane proteins. Using domain swapping, we show that the nucleotide-binding domain and the substrate-binding β domain are responsible for the significant differences in DnaK interactomes, and the nucleotide binding domain also determines the dimerization of MxDnaK2, but not MxDnaK1. Our work suggests that bacterial DnaK has been duplicated in order to deal with a more complex proteome, and that this allows evolution of distinct domains to deal with different subsets of target proteins.IMPORTANCEAll eukaryotic and ~40% of prokaryotic species encode multiple 70 kDa heat shock protein (Hsp70) homologs with similar but diversified functions. Here, we show that duplication of canonical Hsp70 (DnaK in prokaryotes) correlates with increasing proteomic complexity and evolution of particular regions of the protein. Using the Myxococcus xanthus DnaK duplicates as a case, we found that their substrate spectrums are mostly nonoverlapping, and are both consistent to that of Escherichia coli DnaK in structural and molecular characteristics, but show differential enrichment of membrane proteins. Domain/region swapping demonstrated that the nucleotide-binding domain and the β substrate-binding domain (SBDβ), but not the SBDα or disordered C-terminal tail region, are responsible for this functional divergence. This work provides the first direct evidence for regional evolution of DnaK paralogs.
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Affiliation(s)
- Zhuo Pan
- State Key Laboratory of Microbial Technology, Institute of Microbial Technology, Shandong University, Qingdao, China
| | - Li Zhuo
- State Key Laboratory of Microbial Technology, Institute of Microbial Technology, Shandong University, Qingdao, China
- Suzhou Research Institute, Shandong University, Suzhou, China
| | - Tian-yu Wan
- State Key Laboratory of Microbial Technology, Institute of Microbial Technology, Shandong University, Qingdao, China
| | - Rui-yun Chen
- State Key Laboratory of Microbial Technology, Institute of Microbial Technology, Shandong University, Qingdao, China
| | - Yue-zhong Li
- State Key Laboratory of Microbial Technology, Institute of Microbial Technology, Shandong University, Qingdao, China
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24
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Wang Y, Fan W, Zhang G, Zhao L, Li T, Zhang L, Hou T, Hong H, You Z, Sun Q, Li R, Liu C. LRRK2 is involved in heat exposure-induced acute lung injury and alveolar type II epithelial cell dysfunction. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2024; 347:123643. [PMID: 38428793 DOI: 10.1016/j.envpol.2024.123643] [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: 08/29/2023] [Revised: 01/19/2024] [Accepted: 02/22/2024] [Indexed: 03/03/2024]
Abstract
Heat exposure induces excessive hyperthermia associated with systemic inflammatory response that leads to multiple organ dysfunction including acute lung injury. However, how heat impairs the lung remains elusive so far. We aimed to explore the underlying mechanism by focusing on leucine-rich repeat kinase 2 (LRRK2), which was associated with lung homeostasis. Both in vivo and in vitro models were induced by heat exposure. Firstly, heat exposure exerted core temperature (Tc) disturbance, pulmonary dysfunction, atelectasis, inflammation, impaired energy metabolism, and reduced surfactant proteins in the lung of mice. In addition, decreased LRRK2 expression and increased heat shock proteins (HSPs) 70 were observed with heat exposure in both the lung of mice and alveolar type II epithelial cells (AT2). Furthermore, LRRK2 inhibition aggravated heat exposure-initiated Tc dysregulation, injury in the lung and AT2 cells, and enhanced HSP70 expression. In conclusion, LRRK2 is involved in heat-induced acute lung injury and AT2 cell dysfunction.
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Affiliation(s)
- Yindan Wang
- School of Public Health, Zhejiang Chinese Medical University, Hangzhou, China; International Science and Technology Cooperation Base of Air Pollution and Health, Hangzhou, China
| | - Wenjun Fan
- School of Public Health, Zhejiang Chinese Medical University, Hangzhou, China; International Science and Technology Cooperation Base of Air Pollution and Health, Hangzhou, China
| | - Guoqing Zhang
- School of Public Health, Zhejiang Chinese Medical University, Hangzhou, China; International Science and Technology Cooperation Base of Air Pollution and Health, Hangzhou, China
| | - Lisha Zhao
- School of Public Health, Zhejiang Chinese Medical University, Hangzhou, China; International Science and Technology Cooperation Base of Air Pollution and Health, Hangzhou, China
| | - Ting Li
- School of Public Health, Zhejiang Chinese Medical University, Hangzhou, China; International Science and Technology Cooperation Base of Air Pollution and Health, Hangzhou, China
| | - Lu Zhang
- School of Public Health, Zhejiang Chinese Medical University, Hangzhou, China; International Science and Technology Cooperation Base of Air Pollution and Health, Hangzhou, China
| | - Tong Hou
- School of Public Health, Zhejiang Chinese Medical University, Hangzhou, China; International Science and Technology Cooperation Base of Air Pollution and Health, Hangzhou, China
| | - Huihua Hong
- The First Affiliated Hospital of Zhejiang Chinese Medical University (Zhejiang Provincial Hospital of Chinese Medicine), Hangzhou, China
| | - Zhenqiang You
- School of Public Health, Hangzhou Medical College, Hangzhou, China
| | - Qinghua Sun
- School of Public Health, Zhejiang Chinese Medical University, Hangzhou, China; International Science and Technology Cooperation Base of Air Pollution and Health, Hangzhou, China
| | - Ran Li
- School of Public Health, Zhejiang Chinese Medical University, Hangzhou, China; International Science and Technology Cooperation Base of Air Pollution and Health, Hangzhou, China
| | - Cuiqing Liu
- School of Public Health, Zhejiang Chinese Medical University, Hangzhou, China; International Science and Technology Cooperation Base of Air Pollution and Health, Hangzhou, China.
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25
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Krantz BA. Anthrax Toxin: Model System for Studying Protein Translocation. J Mol Biol 2024; 436:168521. [PMID: 38458604 DOI: 10.1016/j.jmb.2024.168521] [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: 11/17/2023] [Revised: 02/08/2024] [Accepted: 03/04/2024] [Indexed: 03/10/2024]
Abstract
Dedicated translocase channels are nanomachines that often, but not always, unfold and translocate proteins through narrow pores across the membrane. Generally, these molecular machines utilize external sources of free energy to drive these reactions, since folded proteins are thermodynamically stable, and once unfolded they contain immense diffusive configurational entropy. To catalyze unfolding and translocate the unfolded state at appreciable timescales, translocase channels often utilize analogous peptide-clamp active sites. Here we describe how anthrax toxin has been used as a biophysical model system to study protein translocation. The tripartite bacterial toxin is composed of an oligomeric translocase channel, protective antigen (PA), and two enzymes, edema factor (EF) and lethal factor (LF), which are translocated by PA into mammalian host cells. Unfolding and translocation are powered by the endosomal proton gradient and are catalyzed by three peptide-clamp sites in the PA channel: the α clamp, the ϕ clamp, and the charge clamp. These clamp sites interact nonspecifically with the chemically complex translocating chain, serve to minimize unfolded state configurational entropy, and work cooperatively to promote translocation. Two models of proton gradient driven translocation have been proposed: (i) an extended-chain Brownian ratchet mechanism and (ii) a proton-driven helix-compression mechanism. These models are not mutually exclusive; instead the extended-chain Brownian ratchet likely operates on β-sheet sequences and the helix-compression mechanism likely operates on α-helical sequences. Finally, we compare and contrast anthrax toxin with other related and unrelated translocase channels.
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Affiliation(s)
- Bryan A Krantz
- Department of Microbial Pathogenesis, School of Dentistry, University of Maryland, Baltimore, 650 W. Baltimore Street, Baltimore, MD 21201, USA.
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26
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Frédérick PM, Jannot G, Banville I, Simard MJ. Interaction between a J-domain co-chaperone and a specific Argonaute protein contributes to microRNA function in animals. Nucleic Acids Res 2024:gkae272. [PMID: 38613392 DOI: 10.1093/nar/gkae272] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2023] [Revised: 03/27/2024] [Accepted: 04/03/2024] [Indexed: 04/14/2024] Open
Abstract
MicroRNAs (miRNAs) are essential regulators of several biological processes. They are loaded onto Argonaute (AGO) proteins to achieve their repressive function, forming the microRNA-Induced Silencing Complex known as miRISC. While several AGO proteins are expressed in plants and animals, it is still unclear why specific AGOs are strictly binding miRNAs. Here, we identified the co-chaperone DNJ-12 as a new interactor of ALG-1, one of the two major miRNA-specific AGOs in Caenorhabditis elegans. DNJ-12 does not interact with ALG-2, the other major miRNA-specific AGO, and PRG-1 and RDE-1, two AGOs involved in other small RNA pathways, making it a specific actor in ALG-1-dependent miRNA-mediated gene silencing. The loss of DNJ-12 causes developmental defects associated with defective miRNA function. Using the Auxin Inducible Degron system, a powerful tool to acutely degrade proteins in specific tissues, we show that DNJ-12 depletion hampers ALG-1 interaction with HSP70, a chaperone required for miRISC loading in vitro. Moreover, DNJ-12 depletion leads to the decrease of several miRNAs and prevents their loading onto ALG-1. This study uncovers the importance of a co-chaperone for the miRNA function in vivo and provides insights to explain how different small RNAs associate with specific AGO in animals.
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Affiliation(s)
- Pierre-Marc Frédérick
- Oncology Division, CHU de Québec-Université Laval Research Center, Québec, QC G1R 3S3, Canada
- Université Laval Cancer Research Centre, Québec, QC G1R 3S3, Canada
| | - Guillaume Jannot
- Oncology Division, CHU de Québec-Université Laval Research Center, Québec, QC G1R 3S3, Canada
- Université Laval Cancer Research Centre, Québec, QC G1R 3S3, Canada
| | - Isabelle Banville
- Oncology Division, CHU de Québec-Université Laval Research Center, Québec, QC G1R 3S3, Canada
- Université Laval Cancer Research Centre, Québec, QC G1R 3S3, Canada
| | - Martin J Simard
- Oncology Division, CHU de Québec-Université Laval Research Center, Québec, QC G1R 3S3, Canada
- Université Laval Cancer Research Centre, Québec, QC G1R 3S3, Canada
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27
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Singh MK, Shin Y, Ju S, Han S, Choe W, Yoon KS, Kim SS, Kang I. Heat Shock Response and Heat Shock Proteins: Current Understanding and Future Opportunities in Human Diseases. Int J Mol Sci 2024; 25:4209. [PMID: 38673794 PMCID: PMC11050489 DOI: 10.3390/ijms25084209] [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: 03/15/2024] [Revised: 04/03/2024] [Accepted: 04/05/2024] [Indexed: 04/28/2024] Open
Abstract
The heat shock response is an evolutionarily conserved mechanism that protects cells or organisms from the harmful effects of various stressors such as heat, chemicals toxins, UV radiation, and oxidizing agents. The heat shock response triggers the expression of a specific set of genes and proteins known as heat shock genes/proteins or molecular chaperones, including HSP100, HSP90, HSP70, HSP60, and small HSPs. Heat shock proteins (HSPs) play a crucial role in thermotolerance and aiding in protecting cells from harmful insults of stressors. HSPs are involved in essential cellular functions such as protein folding, eliminating misfolded proteins, apoptosis, and modulating cell signaling. The stress response to various environmental insults has been extensively studied in organisms from prokaryotes to higher organisms. The responses of organisms to various environmental stressors rely on the intensity and threshold of the stress stimuli, which vary among organisms and cellular contexts. Studies on heat shock proteins have primarily focused on HSP70, HSP90, HSP60, small HSPs, and ubiquitin, along with their applications in human biology. The current review highlighted a comprehensive mechanism of heat shock response and explores the function of heat shock proteins in stress management, as well as their potential as therapeutic agents and diagnostic markers for various diseases.
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Affiliation(s)
- Manish Kumar Singh
- Department of Biochemistry and Molecular Biology, School of Medicine, Kyung Hee University, Seoul 02447, Republic of Korea; (M.K.S.); (Y.S.); (S.J.); (S.H.); (W.C.); (K.-S.Y.)
- Biomedical Science Institute, Kyung Hee University, Seoul 02447, Republic of Korea
| | - Yoonhwa Shin
- Department of Biochemistry and Molecular Biology, School of Medicine, Kyung Hee University, Seoul 02447, Republic of Korea; (M.K.S.); (Y.S.); (S.J.); (S.H.); (W.C.); (K.-S.Y.)
- Biomedical Science Institute, Kyung Hee University, Seoul 02447, Republic of Korea
| | - Songhyun Ju
- Department of Biochemistry and Molecular Biology, School of Medicine, Kyung Hee University, Seoul 02447, Republic of Korea; (M.K.S.); (Y.S.); (S.J.); (S.H.); (W.C.); (K.-S.Y.)
- Biomedical Science Institute, Kyung Hee University, Seoul 02447, Republic of Korea
- Department of Biomedical Science, Graduate School, Kyung Hee University, Seoul 02447, Republic of Korea
| | - Sunhee Han
- Department of Biochemistry and Molecular Biology, School of Medicine, Kyung Hee University, Seoul 02447, Republic of Korea; (M.K.S.); (Y.S.); (S.J.); (S.H.); (W.C.); (K.-S.Y.)
- Biomedical Science Institute, Kyung Hee University, Seoul 02447, Republic of Korea
- Department of Biomedical Science, Graduate School, Kyung Hee University, Seoul 02447, Republic of Korea
| | - Wonchae Choe
- Department of Biochemistry and Molecular Biology, School of Medicine, Kyung Hee University, Seoul 02447, Republic of Korea; (M.K.S.); (Y.S.); (S.J.); (S.H.); (W.C.); (K.-S.Y.)
- Biomedical Science Institute, Kyung Hee University, Seoul 02447, Republic of Korea
- Department of Biomedical Science, Graduate School, Kyung Hee University, Seoul 02447, Republic of Korea
| | - Kyung-Sik Yoon
- Department of Biochemistry and Molecular Biology, School of Medicine, Kyung Hee University, Seoul 02447, Republic of Korea; (M.K.S.); (Y.S.); (S.J.); (S.H.); (W.C.); (K.-S.Y.)
- Biomedical Science Institute, Kyung Hee University, Seoul 02447, Republic of Korea
- Department of Biomedical Science, Graduate School, Kyung Hee University, Seoul 02447, Republic of Korea
| | - Sung Soo Kim
- Department of Biochemistry and Molecular Biology, School of Medicine, Kyung Hee University, Seoul 02447, Republic of Korea; (M.K.S.); (Y.S.); (S.J.); (S.H.); (W.C.); (K.-S.Y.)
- Biomedical Science Institute, Kyung Hee University, Seoul 02447, Republic of Korea
- Department of Biomedical Science, Graduate School, Kyung Hee University, Seoul 02447, Republic of Korea
| | - Insug Kang
- Department of Biochemistry and Molecular Biology, School of Medicine, Kyung Hee University, Seoul 02447, Republic of Korea; (M.K.S.); (Y.S.); (S.J.); (S.H.); (W.C.); (K.-S.Y.)
- Biomedical Science Institute, Kyung Hee University, Seoul 02447, Republic of Korea
- Department of Biomedical Science, Graduate School, Kyung Hee University, Seoul 02447, Republic of Korea
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28
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Oduah EI, Sharfstein ST, Seetharamu N, Grossman SR, Litovchick L. Proteasome inhibition paradoxically degrades gain-of-function mutant p53 R273H in NSCLC and could have therapeutic implications. Front Oncol 2024; 14:1363543. [PMID: 38660140 PMCID: PMC11039826 DOI: 10.3389/fonc.2024.1363543] [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: 12/30/2023] [Accepted: 03/25/2024] [Indexed: 04/26/2024] Open
Abstract
Lung cancer is the leading cause of cancer mortality. Despite therapeutic advances in recent years, new treatment strategies are needed to improve outcomes of lung cancer patients. Mutant p53 is prevalent in lung cancers and drives several hallmarks of cancer through a gain-of-function oncogenic program, and often predicts a poorer prognosis. The oncogenicity of mutant p53 is related to its stability and accumulation in cells by evading degradation by the proteasome. Therefore, destabilization of mutant p53 has been sought as a therapeutic strategy, but so far without clinical success. In this study, we report that proteasome inhibition results in degradation of mutant p53 in non-small cell lung cancer (NSCLC) cell lines bearing the R273H mutant protein and show evidence that this was mediated by hsp70. NSCLC cell lines with the mutant R273H allele demonstrated increased susceptibility and apoptosis to proteasome inhibitors. These data suggest that proteasome inhibitors could have therapeutic implications in some subsets of TP53 mutated NSCLC.
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Affiliation(s)
- Eziafa I. Oduah
- Duke University School of Medicine, Division of Oncology, Durham, NC, United States
- Duke Cancer Institute, Durham, NC, United States
- Department of Internal Medicine, Division of Hematology, Oncology and Palliative Care, Massey Comprehensive Cancer Center and Virginia Commonwealth University, Richmond, VA, United States
| | - Susan T. Sharfstein
- State University of New York at Albany, College of Nanoscale Science and Engineering, Albany, NY, United States
| | - Nagashree Seetharamu
- Donald and Barbara Zucker School of Medicine at Hofstra, Division of Medical Oncology and Hematology, Lake Success, NY, United States
| | - Steven R. Grossman
- Keck School of Medicine and USC Norris Comprehensive Cancer Center, University of Southern California, Los Angeles, CA, United States
| | - Larisa Litovchick
- Department of Internal Medicine, Division of Hematology, Oncology and Palliative Care, Massey Comprehensive Cancer Center and Virginia Commonwealth University, Richmond, VA, United States
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Hu B, Liu G, Zhao K, Zhang G. Diversity of extracellular HSP70 in cancer: advancing from a molecular biomarker to a novel therapeutic target. Front Oncol 2024; 14:1388999. [PMID: 38646439 PMCID: PMC11026673 DOI: 10.3389/fonc.2024.1388999] [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: 02/20/2024] [Accepted: 03/25/2024] [Indexed: 04/23/2024] Open
Abstract
Heat shock protein 70 (HSP70) is a highly conserved protein functioning as a "molecular chaperone", which is integral to protein folding and maturation. In addition to its high expression within cells upon stressful challenges, HSP70 can be translocated to the cell membrane or released from cells in free form or within extracellular vesicles (EVs). Such trafficking of HSP70 is also present in cancer cells, as HSP70 is overexpressed in various types of patient samples across a range of common malignancies, signifying that extracellular HSP70 (eHSP70) can serve as a tumor biomarker. eHSP70 is involved in a broad range of cancer-related events, including cell proliferation and apoptosis, extracellular matrix (ECM) remodeling, epithelial-mesenchymal transition (EMT), angiogenesis, and immune response. eHSP70 can also induce cancer cell resistance to various treatments, such as chemotherapy, radiotherapy, and anti-programmed death-1 (PD-1) immunotherapy. Though the role of eHSP70 in tumors is contradictory, characterized by both pro-tumor and anti-tumor effects, eHSP70 serves as a promising target in cancer treatment. In this review, we comprehensively summarized the current knowledge about the role of eHSP70 in cancer progression and treatment resistance and discussed the feasibility of eHSP70 as a cancer biomarker and therapeutic target.
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Affiliation(s)
- Binbin Hu
- Department of Radiation Oncology, Cancer Center, West China Hospital, Sichuan University, Chengdu, Sichuan, China
| | - Guihong Liu
- Department of Radiation Oncology, Cancer Center, West China Hospital, Sichuan University, Chengdu, Sichuan, China
| | - Kejia Zhao
- Department of Thoracic Surgery and Institute of Thoracic Oncology, West China Hospital, Sichuan University, Chengdu, Sichuan, China
- Western China Collaborative Innovation Center for Early Diagnosis and Multidisciplinary Therapy of Lung Cancer, Chengdu, Sichuan, China
| | - Gao Zhang
- Faculty of Dentistry, The University of Hong Kong, Hong Kong, Hong Kong SAR, China
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Thiruppathi J, Vijayan V, Park IK, Lee SE, Rhee JH. Enhancing cancer immunotherapy with photodynamic therapy and nanoparticle: making tumor microenvironment hotter to make immunotherapeutic work better. Front Immunol 2024; 15:1375767. [PMID: 38646546 PMCID: PMC11026591 DOI: 10.3389/fimmu.2024.1375767] [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: 01/24/2024] [Accepted: 03/25/2024] [Indexed: 04/23/2024] Open
Abstract
Cancer immunotherapy has made tremendous advancements in treating various malignancies. The biggest hurdle to successful immunotherapy would be the immunosuppressive tumor microenvironment (TME) and low immunogenicity of cancer cells. To make immunotherapy successful, the 'cold' TME must be converted to 'hot' immunostimulatory status to activate residual host immune responses. To this end, the immunosuppressive equilibrium in TME should be broken, and immunogenic cancer cell death ought to be induced to stimulate tumor-killing immune cells appropriately. Photodynamic therapy (PDT) is an efficient way of inducing immunogenic cell death (ICD) of cancer cells and disrupting immune-restrictive tumor tissues. PDT would trigger a chain reaction that would make the TME 'hot' and have ICD-induced tumor antigens presented to immune cells. In principle, the strategic combination of PDT and immunotherapy would synergize to enhance therapeutic outcomes in many intractable tumors. Novel technologies employing nanocarriers were developed to deliver photosensitizers and immunotherapeutic to TME efficiently. New-generation nanomedicines have been developed for PDT immunotherapy in recent years, which will accelerate clinical applications.
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Affiliation(s)
- Jayalakshmi Thiruppathi
- Department of Microbiology, Chonnam National University Medical School, Hwasun-gun, Jeonnam, Republic of Korea
- Clinical Vaccine R&D Center, Chonnam National University, Hwasun-gun, Jeonnam, Republic of Korea
- Combinatorial Tumor Immunotherapy Medical Research Center (MRC), Chonnam National University Medical School, Hwasun-gun, Jeonnam, Republic of Korea
- National Immunotherapy Innovation Center, Hwasun-gun, Jeonnam, Republic of Korea
| | - Veena Vijayan
- Department of Biomedical Sciences, Chonnam National University Medical School, Hwasun-gun, Jeonnam, Republic of Korea
| | - In-Kyu Park
- National Immunotherapy Innovation Center, Hwasun-gun, Jeonnam, Republic of Korea
- Department of Biomedical Sciences, Chonnam National University Medical School, Hwasun-gun, Jeonnam, Republic of Korea
- Department of Radiology, Biomolecular Theranostics (BiT) Laboratory, Chonnam National University Medical School, Hwasun-gun, Jeonnam, Republic of Korea
| | - Shee Eun Lee
- Clinical Vaccine R&D Center, Chonnam National University, Hwasun-gun, Jeonnam, Republic of Korea
- National Immunotherapy Innovation Center, Hwasun-gun, Jeonnam, Republic of Korea
- Department of Pharmacology and Dental Therapeutics, School of Dentistry, Chonnam National University, Gwangju, Republic of Korea
| | - Joon Haeng Rhee
- Department of Microbiology, Chonnam National University Medical School, Hwasun-gun, Jeonnam, Republic of Korea
- Clinical Vaccine R&D Center, Chonnam National University, Hwasun-gun, Jeonnam, Republic of Korea
- Combinatorial Tumor Immunotherapy Medical Research Center (MRC), Chonnam National University Medical School, Hwasun-gun, Jeonnam, Republic of Korea
- National Immunotherapy Innovation Center, Hwasun-gun, Jeonnam, Republic of Korea
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31
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Coraggio F, Bhushan M, Roumeliotis S, Caroti F, Bevilacqua C, Prevedel R, Rapti G. Age-progressive interplay of HSP-proteostasis, ECM-cell junctions and biomechanics ensures C. elegans astroglial architecture. Nat Commun 2024; 15:2861. [PMID: 38570505 PMCID: PMC10991496 DOI: 10.1038/s41467-024-46827-2] [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: 01/08/2023] [Accepted: 03/12/2024] [Indexed: 04/05/2024] Open
Abstract
Tissue integrity is sensitive to temperature, tension, age, and is sustained throughout life by adaptive cell-autonomous or extrinsic mechanisms. Safeguarding the remarkably-complex architectures of neurons and glia ensures age-dependent integrity of functional circuits. Here, we report mechanisms sustaining the integrity of C. elegans CEPsh astrocyte-like glia. We combine large-scale genetics with manipulation of genes, cells, and their environment, quantitative imaging of cellular/ subcellular features, tissue material properties and extracellular matrix (ECM). We identify mutants with age-progressive, environment-dependent defects in glial architecture, consequent disruption of neuronal architecture, and abnormal aging. Functional loss of epithelial Hsp70/Hsc70-cochaperone BAG2 causes ECM disruption, altered tissue biomechanics, and hypersensitivity of glia to environmental temperature and mechanics. Glial-cell junctions ensure epithelia-ECM-CEPsh glia association. Modifying glial junctions or ECM mechanics safeguards glial integrity against disrupted BAG2-proteostasis. Overall, we present a finely-regulated interplay of proteostasis-ECM and cell junctions with conserved components that ensures age-progressive robustness of glial architecture.
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Affiliation(s)
- Francesca Coraggio
- Developmental Biology Unit, European Molecular Biology Laboratory, Heidelberg, Germany
| | - Mahak Bhushan
- Developmental Biology Unit, European Molecular Biology Laboratory, Heidelberg, Germany
| | - Spyridon Roumeliotis
- Developmental Biology Unit, European Molecular Biology Laboratory, Heidelberg, Germany
| | - Francesca Caroti
- Developmental Biology Unit, European Molecular Biology Laboratory, Heidelberg, Germany
| | - Carlo Bevilacqua
- Cell Biology and Biophysics Unit, European Molecular Biology Laboratory, Heidelberg, Germany
| | - Robert Prevedel
- Developmental Biology Unit, European Molecular Biology Laboratory, Heidelberg, Germany
- Cell Biology and Biophysics Unit, European Molecular Biology Laboratory, Heidelberg, Germany
- Epigenetics and Neurobiology Unit, European Molecular Biology Laboratory, Rome, Italy
- Interdisciplinary Center of Neurosciences, Heidelberg University, Heidelberg, Germany
- German Center for Lung Research (DZL), Heidelberg, Germany
| | - Georgia Rapti
- Developmental Biology Unit, European Molecular Biology Laboratory, Heidelberg, Germany.
- Epigenetics and Neurobiology Unit, European Molecular Biology Laboratory, Rome, Italy.
- Interdisciplinary Center of Neurosciences, Heidelberg University, Heidelberg, Germany.
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Nguyen A, Mustafa AHM, Leydecker AK, Halilovic M, Murr J, Butter F, Krämer OH. The protein phosphatase-2A subunit PR130 is involved in the formation of cytotoxic protein aggregates in pancreatic ductal adenocarcinoma cells. Cell Commun Signal 2024; 22:217. [PMID: 38570831 PMCID: PMC10993613 DOI: 10.1186/s12964-024-01597-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2023] [Accepted: 03/26/2024] [Indexed: 04/05/2024] Open
Abstract
As a major source of cellular serine and threonine phosphatase activity, protein phosphatase-2A (PP2A) modulates signaling pathways in health and disease. PP2A complexes consist of catalytic, scaffolding, and B-type subunits. Seventeen PP2A B-type subunits direct PP2A complexes to selected substrates. It is ill-defined how PP2A B-type subunits determine the growth and drug responsiveness of tumor cells. Pancreatic ductal adenocarcinoma (PDAC) is a disease with poor prognosis. We analyzed the responses of murine and human mesenchymal and epithelial PDAC cells to the specific PP2A inhibitor phendione. We assessed protein levels by immunoblot and proteomics and cell fate by flow cytometry, confocal microscopy, and genetic manipulation. We show that murine mesenchymal PDAC cells express significantly higher levels of the PP2A B-type subunit PR130 than epithelial PDAC cells. This overexpression of PR130 is associated with a dependency of such metastasis-prone cells on the catalytic activity of PP2A. Phendione induces apoptosis and an accumulation of cytotoxic protein aggregates in murine mesenchymal and human PDAC cells. These processes occur independently of the frequently mutated tumor suppressor p53. Proteomic analyses reveal that phendione upregulates the chaperone HSP70 in mesenchymal PDAC cells. Inhibition of HSP70 promotes phendione-induced apoptosis and phendione promotes a proteasomal degradation of PR130. Genetic elimination of PR130 sensitizes murine and human PDAC cells to phendione-induced apoptosis and protein aggregate formation. These data suggest that the PP2A-PR130 complex dephosphorylates and thereby prevents the aggregation of proteins in tumor cells.
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Affiliation(s)
- Alexandra Nguyen
- Institute of Toxicology, University Medical Center of the Johannes Gutenberg University Mainz, Obere Zahlbacher St. 67, 55131, Mainz, Germany
| | - Al-Hassan M Mustafa
- Institute of Toxicology, University Medical Center of the Johannes Gutenberg University Mainz, Obere Zahlbacher St. 67, 55131, Mainz, Germany
- Department of Zoology, Faculty of Science, Aswan University, Aswan, Egypt
| | - Alessa K Leydecker
- Institute of Toxicology, University Medical Center of the Johannes Gutenberg University Mainz, Obere Zahlbacher St. 67, 55131, Mainz, Germany
| | - Melisa Halilovic
- Institute of Toxicology, University Medical Center of the Johannes Gutenberg University Mainz, Obere Zahlbacher St. 67, 55131, Mainz, Germany
| | - Janine Murr
- Medical Clinic and Polyclinic II, Klinikum Rechts Der Isar, Technical University Munich, 81675, Munich, Germany
| | - Falk Butter
- Institute of Molecular Biology (IMB), Ackermannweg 4, 55128, Mainz, Germany
- Federal Research Institute for Animal Health, Südufer 10, 17493, Greifswald, Insel Riems, Germany
| | - Oliver H Krämer
- Institute of Toxicology, University Medical Center of the Johannes Gutenberg University Mainz, Obere Zahlbacher St. 67, 55131, Mainz, Germany.
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Shen M, Cao S, Long X, Xiao L, Yang L, Zhang P, Li L, Chen F, Lei T, Gao H, Ye F, Bu H. DNAJC12 causes breast cancer chemotherapy resistance by repressing doxorubicin-induced ferroptosis and apoptosis via activation of AKT. Redox Biol 2024; 70:103035. [PMID: 38306757 PMCID: PMC10847378 DOI: 10.1016/j.redox.2024.103035] [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: 12/10/2023] [Revised: 01/03/2024] [Accepted: 01/07/2024] [Indexed: 02/04/2024] Open
Abstract
BACKGROUND Chemotherapy is a primary treatment for breast cancer (BC), yet many patients develop resistance over time. This study aims to identify critical factors contributing to chemoresistance and their underlying molecular mechanisms, with a focus on reversing this resistance. METHODS We utilized samples from the Gene Expression Omnibus (GEO) and West China Hospital to identify and validate genes associated with chemoresistance. Functional studies were conducted using MDA-MB-231 and MCF-7 cell lines, involving gain-of-function and loss-of-function approaches. RNA sequencing (RNA-seq) identified potential mechanisms. We examined interactions between DNAJC12, HSP70, and AKT using co-immunoprecipitation (Co-IP) assays and established cell line-derived xenograft (CDX) models for in vivo validations. RESULTS Boruta analysis of four GEO datasets identified DNAJC12 as highly significant. Patients with high DNAJC12 expression showed an 8 % pathological complete response (pCR) rate, compared to 38 % in the low expression group. DNAJC12 inhibited doxorubicin (DOX)-induced cell death through both ferroptosis and apoptosis. Combining apoptosis and ferroptosis inhibitors completely reversed DOX resistance caused by DNAJC12 overexpression. RNA-seq suggested that DNAJC12 overexpression activated the PI3K-AKT pathway. Inhibition of AKT reversed the DOX resistance induced by DNAJC12, including reduced apoptosis and ferroptosis, restoration of cleaved caspase 3, and decreased GPX4 and SLC7A11 levels. Additionally, DNAJC12 was found to increase AKT phosphorylation in an HSP70-dependent manner, and inhibiting HSP70 also reversed the DOX resistance. In vivo studies confirmed that AKT inhibition reversed DNAJC12-induced DOX resistance in the CDX model. CONCLUSION DNAJC12 expression is closely linked to chemoresistance in BC. The DNAJC12-HSP70-AKT signaling axis is crucial in mediating resistance to chemotherapy by suppressing DOX-induced ferroptosis and apoptosis. Our findings suggest that targeting AKT and HSP70 activities may offer new therapeutic strategies to overcome chemoresistance in BC.
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Affiliation(s)
- Mengjia Shen
- Department of Pathology, West China Hospital, Sichuan University, No. 37, Guo Xue Xiang, Chengdu, 610041, Sichuan, China; Institute of Clinical Pathology, West China Hospital, Sichuan University, Chengdu, 610041, Sichuan, China
| | - Shiyu Cao
- Institute of Clinical Pathology, West China Hospital, Sichuan University, Chengdu, 610041, Sichuan, China
| | - Xinyi Long
- Institute of Clinical Pathology, West China Hospital, Sichuan University, Chengdu, 610041, Sichuan, China
| | - Lin Xiao
- Institute of Clinical Pathology, West China Hospital, Sichuan University, Chengdu, 610041, Sichuan, China
| | - Libo Yang
- Department of Pathology, West China Hospital, Sichuan University, No. 37, Guo Xue Xiang, Chengdu, 610041, Sichuan, China; Institute of Clinical Pathology, West China Hospital, Sichuan University, Chengdu, 610041, Sichuan, China
| | - Peichuan Zhang
- Institute of Thoracic Oncology and Department of Thoracic Surgery, West China Hospital, Sichuan University, Chengdu, China
| | - Li Li
- Institute of Clinical Pathology, West China Hospital, Sichuan University, Chengdu, 610041, Sichuan, China
| | - Fei Chen
- Institute of Clinical Pathology, West China Hospital, Sichuan University, Chengdu, 610041, Sichuan, China
| | - Ting Lei
- Department of Pathology, The Third Affiliated Hospital of Soochow University, Changzhou, Jiangsu 213003, China
| | - Hongwei Gao
- Laboratory Medicine Center, Lanzhou University Second Hospital, The Second Clinical Medical College of Lanzhou University, Lanzhou 730000, China
| | - Feng Ye
- Institute of Clinical Pathology, West China Hospital, Sichuan University, Chengdu, 610041, Sichuan, China; Key Lab of Transplant Engineering and Immunology, Ministry of Health, West China Hospital, Sichuan University, Chengdu, 610041, Sichuan, China.
| | - Hong Bu
- Department of Pathology, West China Hospital, Sichuan University, No. 37, Guo Xue Xiang, Chengdu, 610041, Sichuan, China; Institute of Clinical Pathology, West China Hospital, Sichuan University, Chengdu, 610041, Sichuan, China; Key Lab of Transplant Engineering and Immunology, Ministry of Health, West China Hospital, Sichuan University, Chengdu, 610041, Sichuan, China.
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Dey KK, Kamila S, Das T, Chattopadhyay A. Lead induced genotoxicity and hepatotoxicity in zebrafish (Danio rerio) at environmentally relevant concentration: Nrf2-Keap1 regulated stress response and expression of biomarker genes. ENVIRONMENTAL TOXICOLOGY AND PHARMACOLOGY 2024; 107:104396. [PMID: 38395243 DOI: 10.1016/j.etap.2024.104396] [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: 11/26/2023] [Revised: 02/07/2024] [Accepted: 02/19/2024] [Indexed: 02/25/2024]
Abstract
Genotoxic and hepatotoxic potentials of Pb at an environmentally relevant concentration (5 ppm) in zebrafish were investigated in the present study. Erythrocytic nuclear abnormality tests revealed the increased frequencies of abnormal erythrocytes after Pb exposure, indicating a strong genotoxic potential of Pb. Multiple stress-related parameters were further evaluated in liver, the major detoxifying organ. Pb caused increased production of ROS, which in turn caused severe oxidative stress. As a result, lipid peroxidation was increased, whereas reduced glutathione level and catalase activity was decreased. Alterations in liver histoarchitecture also served as evidence of Pb-induced hepatotoxicity. Pb-induced ROS stress triggered upregulation of Nrf2, Nqo1, Ho1; downregulation of Keap1, and altered mRNA expressions of Mn-sod, Cu/Zn-sod, gpx1, cyp1a, ucp2 suggesting involvement of Nrf2-Keap1-ARE signaling in cellular defence. Nrf2-keap1 is a sensitive biomarker of Pb-induced ROS stress. Overexpression of Hsp70 and other genes in hepatocytes might help cell survival under oxidative stress generation.
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Affiliation(s)
- Koushik Kumar Dey
- Department of Zoology, Visva-Bharati, Santiniketan, West Bengal - 731235, India
| | - Sreejata Kamila
- Department of Zoology, Visva-Bharati, Santiniketan, West Bengal - 731235, India
| | - Tanmoy Das
- Department of Zoology, Visva-Bharati, Santiniketan, West Bengal - 731235, India
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Wang Q, Li L, Gao X, Zhang C, Xu C, Song L, Li J, Sun X, Mao F, Wang Y. Targeting GRP75 with a Chlorpromazine Derivative Inhibits Endometrial Cancer Progression Through GRP75-IP3R-Ca 2+-AMPK Axis. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2024; 11:e2304203. [PMID: 38342610 PMCID: PMC11022737 DOI: 10.1002/advs.202304203] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/24/2023] [Revised: 01/18/2024] [Indexed: 02/13/2024]
Abstract
Tumors often overexpress glucose-regulated proteins, and agents that interfere with the production or activity of these proteins may represent novel cancer treatments. The chlorpromazine derivative JX57 exhibits promising effects against endometrial cancer with minimal extrapyramidal side effects; however, its mechanisms of action are currently unknown. Here, glucose-regulated protein 75 kD (GRP75) is identified as a direct target of JX57 using activity-based protein profiling and loss-of-function experiments. The findings show that GRP75 is necessary for the biological activity of JX57, as JX57 exhibits moderate anticancer properties in GRP75-deficient cancer cells, both in vitro and in vivo. High GRP75 expression is correlated with poor differentiation and poor survival in patients with endometrial cancer, whereas the knockdown of GRP75 can significantly suppress tumor growth. Mechanistically, the direct binding of JX57 to GRP75 impairs the structure of the mitochondria-associated endoplasmic reticulum membrane and disrupts the endoplasmic reticulum-mitochondrial calcium homeostasis, resulting in a mitochondrial energy crisis and AMP-activated protein kinase activation. Taken together, these findings highlight GRP75 as a potential prognostic biomarker and direct therapeutic target in endometrial cancer and suggest that the chlorpromazine derivative JX57 can potentially be a new therapeutic option for endometrial cancer.
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Affiliation(s)
- Qi Wang
- Department of Gynecologic Oncologythe International Peace Maternity and Child Health HospitalSchool of MedicineShanghai Municipal Key Clinical SpecialtyFemale Tumor Reproductive SpecialtyShanghai Key Laboratory of Embryo Original DiseaseShanghai Jiao Tong UniversityShanghai200025China
- State Key Laboratory of Bioreactor EngineeringShanghai Frontiers Science Center of Optogenetic Techniques for Cell MetabolismFrontiers Science Center for Materiobiology and Dynamic ChemistryShanghai Key Laboratory of New Drug DesignSchool of PharmacyEast China University of Science and TechnologyShanghai200237China
| | - Lijuan Li
- Department of Gynecologic Oncologythe International Peace Maternity and Child Health HospitalSchool of MedicineShanghai Municipal Key Clinical SpecialtyFemale Tumor Reproductive SpecialtyShanghai Key Laboratory of Embryo Original DiseaseShanghai Jiao Tong UniversityShanghai200025China
| | - Xiaoyan Gao
- Department of Gynecologic Oncologythe International Peace Maternity and Child Health HospitalSchool of MedicineShanghai Municipal Key Clinical SpecialtyFemale Tumor Reproductive SpecialtyShanghai Key Laboratory of Embryo Original DiseaseShanghai Jiao Tong UniversityShanghai200025China
| | - Chunxue Zhang
- Department of Gynecologic Oncologythe International Peace Maternity and Child Health HospitalSchool of MedicineShanghai Municipal Key Clinical SpecialtyFemale Tumor Reproductive SpecialtyShanghai Key Laboratory of Embryo Original DiseaseShanghai Jiao Tong UniversityShanghai200025China
| | - Chen Xu
- Department of Gynecologic Oncologythe International Peace Maternity and Child Health HospitalSchool of MedicineShanghai Municipal Key Clinical SpecialtyFemale Tumor Reproductive SpecialtyShanghai Key Laboratory of Embryo Original DiseaseShanghai Jiao Tong UniversityShanghai200025China
| | - Lingyi Song
- State Key Laboratory of Bioreactor EngineeringShanghai Frontiers Science Center of Optogenetic Techniques for Cell MetabolismFrontiers Science Center for Materiobiology and Dynamic ChemistryShanghai Key Laboratory of New Drug DesignSchool of PharmacyEast China University of Science and TechnologyShanghai200237China
| | - Jian Li
- State Key Laboratory of Bioreactor EngineeringShanghai Frontiers Science Center of Optogenetic Techniques for Cell MetabolismFrontiers Science Center for Materiobiology and Dynamic ChemistryShanghai Key Laboratory of New Drug DesignSchool of PharmacyEast China University of Science and TechnologyShanghai200237China
| | - Xiao Sun
- Department of Gynecologic Oncologythe International Peace Maternity and Child Health HospitalSchool of MedicineShanghai Municipal Key Clinical SpecialtyFemale Tumor Reproductive SpecialtyShanghai Key Laboratory of Embryo Original DiseaseShanghai Jiao Tong UniversityShanghai200025China
| | - Fei Mao
- State Key Laboratory of Bioreactor EngineeringShanghai Frontiers Science Center of Optogenetic Techniques for Cell MetabolismFrontiers Science Center for Materiobiology and Dynamic ChemistryShanghai Key Laboratory of New Drug DesignSchool of PharmacyEast China University of Science and TechnologyShanghai200237China
| | - Yudong Wang
- Department of Gynecologic Oncologythe International Peace Maternity and Child Health HospitalSchool of MedicineShanghai Municipal Key Clinical SpecialtyFemale Tumor Reproductive SpecialtyShanghai Key Laboratory of Embryo Original DiseaseShanghai Jiao Tong UniversityShanghai200025China
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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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Liu C, Chen B, Xu P, Yang J, Nip C, Wang L, Shen Y, Ning S, Shang Y, Corey E, Gao AC, Gestwicki J, Wei Q, Liu L. Plexin D1 emerges as a novel target in the development of neural lineage plasticity in treatment-resistant prostate cancer. RESEARCH SQUARE 2024:rs.3.rs-4095949. [PMID: 38585965 PMCID: PMC10996809 DOI: 10.21203/rs.3.rs-4095949/v1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/09/2024]
Abstract
Treatment-induced neuroendocrine prostate cancer (t-NEPC) often arises from adenocarcinoma via lineage plasticity in response to androgen receptor signaling inhibitors, such as enzalutamide. However, the specific regulators and targets involved in the transition to NEPC are not well understood. Plexin D1 (PLXND1) is a cellular receptor of the semaphorin (SEMA) family that plays important roles in modulating the cytoskeleton and cell adhesion. Here, we found that PLXND1 is highly expressed and positively correlated with neuroendocrine markers in patients with NEPC. High PLXND1 expression is associated with poorer prognosis in prostate cancer patients. Additionally, PLXND1 was upregulated and negatively regulated by androgen receptor signaling in enzalutamide-resistant cells. Knockdown or knockout of PLXND1 inhibit neural lineage pathways, suppressing NEPC cell proliferation, PDX tumor organoid viability, and xenograft tumor growth. Mechanistically, the chaperone protein HSP70 regulates PLXND1 protein stability through degradation, and inhibition of HSP70 decreases PLXND1 expression and NEPC organoid growth. In summary, our findings suggest that PLXND1 could be a new therapeutic target and molecular indicator for NEPC.
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Affiliation(s)
| | | | | | | | | | | | | | | | | | | | | | | | - Qiang Wei
- West China Hospital of Sichuan University
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Ciesielski SJ, Schilke BA, Stolarska M, Tonelli M, Tomiczek B, Craig EA. Comparative structural and functional analysis of the glycine-rich regions of Class A and B J-domain protein cochaperones of Hsp70. FEBS Lett 2024. [PMID: 38529663 DOI: 10.1002/1873-3468.14857] [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: 12/07/2023] [Revised: 02/13/2024] [Accepted: 02/21/2024] [Indexed: 03/27/2024]
Abstract
J-domain proteins are critical Hsp70 co-chaperones. A and B types have a poorly understood glycine-rich region (Grich) adjacent to their N-terminal J-domain (Jdom). We analyzed the ability of Jdom/Grich segments of yeast Class B Sis1 and a suppressor variant of Class A, Ydj1, to rescue the inviability of sis1-∆. In each, we identified a cluster of Grich residues required for rescue. Both contain conserved hydrophobic and acidic residues and are predicted to form helices. While, as expected, the Sis1 segment docks on its J-domain, that of Ydj1 does not. However, data suggest both interact with Hsp70. We speculate that the Grich-Hsp70 interaction of Classes A and B J-domain proteins can fine tune the activity of Hsp70, thus being particularly important for the function of Class B.
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Affiliation(s)
- Szymon J Ciesielski
- Department of Chemistry and Biochemistry, University of North Florida, Jacksonville, FL, USA
| | - Brenda A Schilke
- Department of Biochemistry, University of Wisconsin - Madison, WI, USA
| | - Milena Stolarska
- Intercollegiate Faculty of Biotechnology, University of Gdansk and Medical University of Gdansk, Poland
| | - Marco Tonelli
- Department of Biochemistry, University of Wisconsin - Madison, WI, USA
- National Magnetic Resonance Facility at Madison, University of Wisconsin - Madison, WI, USA
| | - Bartlomiej Tomiczek
- Intercollegiate Faculty of Biotechnology, University of Gdansk and Medical University of Gdansk, Poland
| | - Elizabeth A Craig
- Department of Biochemistry, University of Wisconsin - Madison, WI, USA
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Yang W, Gao S, Bao M, Li X, Liu Z, Wang G. HSP70A promotes the photosynthetic activity of marine diatom Phaeodactylum tricornutum under high temperature. THE PLANT JOURNAL : FOR CELL AND MOLECULAR BIOLOGY 2024. [PMID: 38525917 DOI: 10.1111/tpj.16730] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/26/2023] [Revised: 01/29/2024] [Accepted: 03/05/2024] [Indexed: 03/26/2024]
Abstract
With global climate change, the high-temperature environment has severely impacted the community structure and phenotype of marine diatoms. Phaeodactylum tricornutum, a model species of marine diatom, is sensitive to high temperature, which grow slowly under high temperature. However, the regulatory mechanism of P. tricornutum in response to high-temperature is still unclear. In this study, we found that the expression level of the HSP70A in the wild type (WT) increased 28 times when exposed to high temperature (26°C) for 1 h, indicating that HSP70A plays a role in high temperature in P. tricornutum. Furthermore, overexpression and interference of HSP70A have great impact on the exponential growth phase of P. tricornutum under 26°C. Moreover, the results of Co-immunoprecipitation (Co-IP) suggested that HSP70A potentially involved in the correct folding of the photosynthetic system-related proteins (D1/D2), preventing aggregation. The photosynthetic activity results demonstrated that overexpression of HSP70A improves non-photochemical quenching (NPQ) activity under high-temperature stress. These results reveal that HSP70A regulates the photosynthetic activity of P. tricornutum under high temperatures. This study not only helps us to understand the photosynthetic activity of marine diatoms to high temperature but also provides a molecular mechanism for HSP70A in P. tricornutum under high-temperature stress.
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Affiliation(s)
- Wenting Yang
- School of Marine Biology and Fisheries, Hainan University, Haikou, Hainan, China
- Key Laboratory of Experimental Marine Biology, Center for Ocean Mega-Science, Institute of Oceanology, Chinese Academy of Sciences, Qingdao, China
- Key Laboratory of Breeding Biotechnology and Sustainable Aquaculture, Chinese Academy of Sciences, Qingdao, China
| | - Shan Gao
- Key Laboratory of Experimental Marine Biology, Center for Ocean Mega-Science, Institute of Oceanology, Chinese Academy of Sciences, Qingdao, China
- Key Laboratory of Breeding Biotechnology and Sustainable Aquaculture, Chinese Academy of Sciences, Qingdao, China
- Laboratory for Marine Biology and Biotechnology, Qingdao Marine Science and Technology Center, Qingdao, China
| | - Mengjiao Bao
- Key Laboratory of Experimental Marine Biology, Center for Ocean Mega-Science, Institute of Oceanology, Chinese Academy of Sciences, Qingdao, China
- Key Laboratory of Breeding Biotechnology and Sustainable Aquaculture, Chinese Academy of Sciences, Qingdao, China
- College of Life Science, Qingdao Agricultural University, Qingdao, China
| | - Xin Li
- Key Laboratory of Experimental Marine Biology, Center for Ocean Mega-Science, Institute of Oceanology, Chinese Academy of Sciences, Qingdao, China
- Key Laboratory of Breeding Biotechnology and Sustainable Aquaculture, Chinese Academy of Sciences, Qingdao, China
- Laboratory for Marine Biology and Biotechnology, Qingdao Marine Science and Technology Center, Qingdao, China
- College of Earth Sciences, University of Chinese Academy of Sciences, Beijing, China
| | - Zhiyuan Liu
- School of Marine Biology and Fisheries, Hainan University, Haikou, Hainan, China
| | - Guangce Wang
- Key Laboratory of Experimental Marine Biology, Center for Ocean Mega-Science, Institute of Oceanology, Chinese Academy of Sciences, Qingdao, China
- Key Laboratory of Breeding Biotechnology and Sustainable Aquaculture, Chinese Academy of Sciences, Qingdao, China
- Laboratory for Marine Biology and Biotechnology, Qingdao Marine Science and Technology Center, Qingdao, China
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Zeng Y, Zhao J, Wu Z, Huang Y, Wang A, Zhu J, Xu M, Zhang W, Zhang X, Li J, Huang JA, Liu Z. Targeting TYK2 alleviates Rab27A-induced malignant progression of non-small cell lung cancer via disrupting IFNα-TYK2-STAT-HSPA5 axis. NPJ Precis Oncol 2024; 8:74. [PMID: 38521810 PMCID: PMC10960821 DOI: 10.1038/s41698-024-00574-1] [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: 10/09/2023] [Accepted: 03/01/2024] [Indexed: 03/25/2024] Open
Abstract
Rab27A is a small GTPase-mediating exosome secretion, which participates in tumorigenesis of multiple cancer types. Understanding the biological role of Rab27A in non-small cell lung cancer (NSCLC) is of great importance for oncological research and clinical treatment. In this study, we investigate the function and internal mechanism of Rab27A in NSCLC. Results show that Rab27A is overexpressed in NSCLC, and regulates the tumor proliferation, migration, invasion, and cell motility in vitro and in vivo, and is negatively regulated by miR-124. Further research reveals that upregulated Rab27A can induce the production of IFNα in the medium by mediating exosome secretion. Then IFNα activates TYK2/STAT/HSPA5 signaling to promote NSCLC cell proliferation and metastasis. This process can be suppressed by TYK2 inhibitor Cerdulatinib. These results suggest that Rab27A is involved in the pathogenesis of NSCLC by regulating exosome secretion and downstream signaling, and inhibitors targeting this axis may become a promising strategy in future clinical practice.
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Affiliation(s)
- Yuanyuan Zeng
- Department of Pulmonary and Critical Care Medicine, The First Affiliated Hospital of Soochow University, 215006, Suzhou, China
- Institute of Respiratory Diseases, Soochow University, 215006, Suzhou, China
- Suzhou Key Laboratory for Respiratory Diseases, 215006, Suzhou, China
| | - Jian Zhao
- Department of Pulmonary and Critical Care Medicine, The First Affiliated Hospital of Soochow University, 215006, Suzhou, China
| | - Zhengyan Wu
- Department of Health Management Center, The First Affiliated Hospital of Soochow University, Suzhou, 215006, Suzhou, China
| | - Yongkang Huang
- Department of Pulmonary and Critical Care Medicine, The First Affiliated Hospital of Soochow University, 215006, Suzhou, China
| | - Anqi Wang
- Department of Pulmonary and Critical Care Medicine, The First Affiliated Hospital of Soochow University, 215006, Suzhou, China
| | - Jianjie Zhu
- Department of Pulmonary and Critical Care Medicine, The First Affiliated Hospital of Soochow University, 215006, Suzhou, China
- Institute of Respiratory Diseases, Soochow University, 215006, Suzhou, China
- Suzhou Key Laboratory for Respiratory Diseases, 215006, Suzhou, China
| | - Mengmeng Xu
- Department of Pathology, The Second Affiliated Hospital of Soochow University, 215006, Suzhou, China
| | - Weijie Zhang
- Department of Pulmonary and Critical Care Medicine, The First Affiliated Hospital of Soochow University, 215006, Suzhou, China
| | - Xiaohui Zhang
- Department of Pulmonary and Critical Care Medicine, The First Affiliated Hospital of Soochow University, 215006, Suzhou, China
| | - Jianjun Li
- Department of Pulmonary and Critical Care Medicine, The First Affiliated Hospital of Soochow University, 215006, Suzhou, China
| | - Jian-An Huang
- Department of Pulmonary and Critical Care Medicine, The First Affiliated Hospital of Soochow University, 215006, Suzhou, China.
- Institute of Respiratory Diseases, Soochow University, 215006, Suzhou, China.
- Suzhou Key Laboratory for Respiratory Diseases, 215006, Suzhou, China.
| | - Zeyi Liu
- Department of Pulmonary and Critical Care Medicine, The First Affiliated Hospital of Soochow University, 215006, Suzhou, China.
- Institute of Respiratory Diseases, Soochow University, 215006, Suzhou, China.
- Suzhou Key Laboratory for Respiratory Diseases, 215006, Suzhou, China.
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de Souza EB, Marin DD, Ramos AS, Homobono BP, Ramos PDCDA, de Brito VC, da Cruz GS, da Costa NN, Cordeiro MDS, Santos SDSD. Use of platelet-rich plasma on in vitro maturation during bovine embryo production. Anim Reprod 2024; 21:e20230107. [PMID: 38562606 PMCID: PMC10984563 DOI: 10.1590/1984-3143-ar2023-0107] [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: 07/03/2023] [Accepted: 02/19/2024] [Indexed: 04/04/2024] Open
Abstract
One of the crucial aspects to be considered for successful in vitro production (IVP) of embryos is the composition of the various media used throughout the stages of this reproductive biotechnology. The cell culture media employed should fulfill the metabolic requirements of both gametes during oocyte maturation and sperm development, as well as the embryo during its initial cell divisions. Most IVP protocols incorporate blood serum into the media composition as a source of hormones, proteins, growth factors, and nutrients. Numerous studies have suggested Platelet-Rich Plasma (PRP) as a substitute for fetal sera in cell culture, particularly for stem cells. Therefore, the objective of this study is to assess the potential use of PRP as a replacement for fetal bovine serum (FBS) during oocyte maturation for in vitro production of bovine embryos. During in vitro maturation (IVM), cumulus-oocyte complexes (COCs) were allocated into the following experimental groups: Group G1 (IVM medium with 5% PRP); Group G2 (MIV medium with 5% PRP and 5% SFB); Group G3 (MIV medium with 5% SFB); and Group G4 (MIV medium without either PRP or SFB). Subsequently, the cumulus-oocyte complexes were fertilized with semen from a single bull, and the resulting zygotes were cultured for seven days. Cleavage and blastocyst formation rates were assessed on days 2 and 7 of embryonic development, respectively. The quality of matured COCs was also evaluated by analyzing the gene expression of HSP70, an important protein associated with cellular stress. The results demonstrated that there were no significant differences among the experimental groups in terms of embryo production rates, both in the initial cleavage stages and blastocyst formation (except for the G4 group, which exhibited a lower blastocyst formation rate on D7, as expected). This indicates that PRP could be a cost-effective alternative to SFB in the IVP of embryos.
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Affiliation(s)
- Eduardo Baia de Souza
- Laboratório de Fertilização in Vitro, Instituto de Ciências Biológicas – ICB, Universidade Federal do Pará – UFPA, Belém, PA, Brasil
| | - Diego Dubeibe Marin
- Facultad de Medicina Veterinaria y Zootecnia, Universidad de Ciencias Aplicadas y Ambientales – UDCA, Bogotá, Colombia
| | - Anelise Sarges Ramos
- Laboratório de Fertilização in Vitro, Instituto de Ciências Biológicas – ICB, Universidade Federal do Pará – UFPA, Belém, PA, Brasil
| | - Bruno Porpino Homobono
- Laboratório de Fertilização in Vitro, Instituto de Ciências Biológicas – ICB, Universidade Federal do Pará – UFPA, Belém, PA, Brasil
| | | | - Vanessa Cunha de Brito
- Laboratório de Fertilização in Vitro, Instituto de Ciências Biológicas – ICB, Universidade Federal do Pará – UFPA, Belém, PA, Brasil
| | - Gabriela Santos da Cruz
- Laboratório de Fertilização in Vitro, Instituto de Ciências Biológicas – ICB, Universidade Federal do Pará – UFPA, Belém, PA, Brasil
| | - Nathalia Nogueira da Costa
- Laboratório de Fertilização in Vitro, Instituto de Ciências Biológicas – ICB, Universidade Federal do Pará – UFPA, Belém, PA, Brasil
| | - Marcela da Silva Cordeiro
- Laboratório de Fertilização in Vitro, Instituto de Ciências Biológicas – ICB, Universidade Federal do Pará – UFPA, Belém, PA, Brasil
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Lin Y, Kang Z, Su C, Li S, Xie W. Extracellular vesicles ameliorates sleep deprivation induced anxiety-like behavior and cognitive impairment in mice. Mol Ther Methods Clin Dev 2024; 32:101207. [PMID: 38435131 PMCID: PMC10907212 DOI: 10.1016/j.omtm.2024.101207] [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: 10/18/2023] [Accepted: 01/31/2024] [Indexed: 03/05/2024]
Abstract
The aim of this research was to explore the therapeutic capabilities of extracellular vesicles (EVs) derived from human umbilical cord mesenchymal stem cells (hUC-MSCs) that had been subjected to heat shock pretreatment, in treating psychiatric disorders induced by sleep deprivation in mice. The EVs were isolated and characterized, while western blotting was utilized to assess the expression of exosomal markers and heat shock protein 70 (HSP70). To evaluate the impact of EV treatment on anxiety-like behavior and cognitive impairment in sleep-deprived (SD) mice, the open field test, plus maze test, and Y-maze task were conducted. Heat shock pretreatment significantly increased the expression of HSP70 in EVs. Administration of EVs from heat shock-pretreated hUC-MSCs improved anxiety-like behavior and cognitive function in SD mice. Furthermore, EV treatment promoted synaptic protein expression, HSP70 expression and inhibited neuroinflammation in the hippocampus of SD mice. Western blotting analysis also revealed that EV treatment reduced the levels of TLR4 and p65 in the hippocampus. EVs from heat shock-pretreated hUC-MSCs have therapeutic potential for sleep deprivation-induced psychiatric disorders by regulating neuroinflammation and synaptic function in mice.
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Affiliation(s)
- Yiqin Lin
- Department of Anesthesiology, Quanzhou First Hospital Affiliated to Fujian Medical University, Quanzhou, Fujian 362000, China
| | - Zhenming Kang
- Department of Anesthesiology, Quanzhou First Hospital Affiliated to Fujian Medical University, Quanzhou, Fujian 362000, China
| | - Changsheng Su
- Department of Anesthesiology, Quanzhou First Hospital Affiliated to Fujian Medical University, Quanzhou, Fujian 362000, China
| | - Shunyuan Li
- Department of Anesthesiology, Quanzhou First Hospital Affiliated to Fujian Medical University, Quanzhou, Fujian 362000, China
| | - Wenqin Xie
- Department of Anesthesiology, Quanzhou First Hospital Affiliated to Fujian Medical University, Quanzhou, Fujian 362000, China
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Wilson EL, Yu Y, Leal NS, Woodward JA, Patikas N, Morris JL, Field SF, Plumbly W, Paupe V, Chowdhury SR, Antrobus R, Lindop GE, Adia YM, Loh SHY, Prudent J, Martins LM, Metzakopian E. Genome-wide CRISPR/Cas9 screen shows that loss of GET4 increases mitochondria-endoplasmic reticulum contact sites and is neuroprotective. Cell Death Dis 2024; 15:203. [PMID: 38467609 PMCID: PMC10928201 DOI: 10.1038/s41419-024-06568-y] [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: 06/26/2023] [Revised: 02/13/2024] [Accepted: 02/19/2024] [Indexed: 03/13/2024]
Abstract
Organelles form membrane contact sites between each other, allowing for the transfer of molecules and signals. Mitochondria-endoplasmic reticulum (ER) contact sites (MERCS) are cellular subdomains characterized by close apposition of mitochondria and ER membranes. They have been implicated in many diseases, including neurodegenerative, metabolic, and cardiac diseases. Although MERCS have been extensively studied, much remains to be explored. To uncover novel regulators of MERCS, we conducted a genome-wide, flow cytometry-based screen using an engineered MERCS reporter cell line. We found 410 genes whose downregulation promotes MERCS and 230 genes whose downregulation decreases MERCS. From these, 29 genes were selected from each population for arrayed screening and 25 were validated from the high population and 13 from the low population. GET4 and BAG6 were highlighted as the top 2 genes that upon suppression increased MERCS from both the pooled and arrayed screens, and these were subjected to further investigation. Multiple microscopy analyses confirmed that loss of GET4 or BAG6 increased MERCS. GET4 and BAG6 were also observed to interact with the known MERCS proteins, inositol 1,4,5-trisphosphate receptors (IP3R) and glucose-regulated protein 75 (GRP75). In addition, we found that loss of GET4 increased mitochondrial calcium uptake upon ER-Ca2+ release and mitochondrial respiration. Finally, we show that loss of GET4 rescues motor ability, improves lifespan and prevents neurodegeneration in a Drosophila model of Alzheimer's disease (Aβ42Arc). Together, these results suggest that GET4 is involved in decreasing MERCS and that its loss is neuroprotective.
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Affiliation(s)
- Emma L Wilson
- UK Dementia Research Institute, University of Cambridge, Clifford Albutt building, Cambridge biomedical campus, Cambridge, CB2 0AH, UK
- MRC Mitochondrial Biology Unit, University of Cambridge, The Keith Peters building, Cambridge Biomedical Campus, Cambridge, CB2 0XY, UK
- MRC Toxicology Unit, University of Cambridge, Gleeson Building, Tennis Court Road, Cambridge, CB2 1QR, UK
| | - Yizhou Yu
- MRC Toxicology Unit, University of Cambridge, Gleeson Building, Tennis Court Road, Cambridge, CB2 1QR, UK
| | - Nuno S Leal
- MRC Toxicology Unit, University of Cambridge, Gleeson Building, Tennis Court Road, Cambridge, CB2 1QR, UK
| | - James A Woodward
- MRC Toxicology Unit, University of Cambridge, Gleeson Building, Tennis Court Road, Cambridge, CB2 1QR, UK
| | - Nikolaos Patikas
- UK Dementia Research Institute, University of Cambridge, Clifford Albutt building, Cambridge biomedical campus, Cambridge, CB2 0AH, UK
| | - Jordan L Morris
- MRC Mitochondrial Biology Unit, University of Cambridge, The Keith Peters building, Cambridge Biomedical Campus, Cambridge, CB2 0XY, UK
| | - Sarah F Field
- UK Dementia Research Institute, University of Cambridge, Clifford Albutt building, Cambridge biomedical campus, Cambridge, CB2 0AH, UK
| | - William Plumbly
- UK Dementia Research Institute, University of Cambridge, Clifford Albutt building, Cambridge biomedical campus, Cambridge, CB2 0AH, UK
| | - Vincent Paupe
- MRC Mitochondrial Biology Unit, University of Cambridge, The Keith Peters building, Cambridge Biomedical Campus, Cambridge, CB2 0XY, UK
| | - Suvagata R Chowdhury
- MRC Mitochondrial Biology Unit, University of Cambridge, The Keith Peters building, Cambridge Biomedical Campus, Cambridge, CB2 0XY, UK
| | - Robin Antrobus
- Cambridge Institute for Medical Research, University of Cambridge, The Keith Peters Building, Cambridge Biomedical Campus, Hills Rd, Cambridge, CB2 0XY, UK
| | - Georgina E Lindop
- Cambridge Advanced Imaging Centre, University of Cambridge, Anatomy Building, Downing Site, Cambridge, CB2 3DY, UK
| | - Yusuf M Adia
- MRC Toxicology Unit, University of Cambridge, Gleeson Building, Tennis Court Road, Cambridge, CB2 1QR, UK
| | - Samantha H Y Loh
- MRC Toxicology Unit, University of Cambridge, Gleeson Building, Tennis Court Road, Cambridge, CB2 1QR, UK
| | - Julien Prudent
- MRC Mitochondrial Biology Unit, University of Cambridge, The Keith Peters building, Cambridge Biomedical Campus, Cambridge, CB2 0XY, UK.
| | - L Miguel Martins
- MRC Toxicology Unit, University of Cambridge, Gleeson Building, Tennis Court Road, Cambridge, CB2 1QR, UK.
| | - Emmanouil Metzakopian
- UK Dementia Research Institute, University of Cambridge, Clifford Albutt building, Cambridge biomedical campus, Cambridge, CB2 0AH, UK.
- bit bio, The Dorothy Hodgkin Building, Babraham Research Campus, Cambridge, CB22 3FH, UK.
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Mattos-Graner RO, Klein MI, Alves LA. The complement system as a key modulator of the oral microbiome in health and disease. Crit Rev Microbiol 2024; 50:138-167. [PMID: 36622855 DOI: 10.1080/1040841x.2022.2163614] [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: 10/03/2022] [Revised: 12/22/2022] [Accepted: 12/23/2022] [Indexed: 01/10/2023]
Abstract
In this review, we address the interplay between the complement system and host microbiomes in health and disease, focussing on oral bacteria known to contribute to homeostasis or to promote dysbiosis associated with dental caries and periodontal diseases. Host proteins modulating complement activities in the oral environment and expression profiles of complement proteins in oral tissues were described. In addition, we highlight a sub-set of bacterial proteins involved in complement evasion and/or dysregulation previously characterized in pathogenic species (or strains), but further conserved among prototypical commensal species of the oral microbiome. Potential roles of these proteins in host-microbiome homeostasis and in the emergence of commensal strain lineages with increased virulence were also addressed. Finally, we provide examples of how commensal bacteria might exploit the complement system in competitive or cooperative interactions within the complex microbial communities of oral biofilms. These issues highlight the need for studies investigating the effects of the complement system on bacterial behaviour and competitiveness during their complex interactions within oral and extra-oral host sites.
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Affiliation(s)
- Renata O Mattos-Graner
- Department of Oral Diagnosis, Piracicaba Dental School, State University of Campinas (UNICAMP), Sao Paulo, Brazil
| | - Marlise I Klein
- Department of Oral Diagnosis, Piracicaba Dental School, State University of Campinas (UNICAMP), Sao Paulo, Brazil
| | - Lívia Araújo Alves
- Department of Oral Diagnosis, Piracicaba Dental School, State University of Campinas (UNICAMP), Sao Paulo, Brazil
- School of Dentistry, Cruzeiro do Sul University (UNICSUL), Sao Paulo, Brazil
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45
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Kim H, Kim J, Son N, Kuo P, Morgan C, Chambon A, Byun D, Park J, Lee Y, Park YM, Fozard JA, Guérin J, Hurel A, Lambing C, Howard M, Hwang I, Mercier R, Grelon M, Henderson IR, Choi K. Control of meiotic crossover interference by a proteolytic chaperone network. NATURE PLANTS 2024; 10:453-468. [PMID: 38379086 DOI: 10.1038/s41477-024-01633-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/06/2023] [Accepted: 01/24/2024] [Indexed: 02/22/2024]
Abstract
Meiosis is a specialized eukaryotic division that produces genetically diverse gametes for sexual reproduction. During meiosis, homologous chromosomes pair and undergo reciprocal exchanges, called crossovers, which recombine genetic variation. Meiotic crossovers are stringently controlled with at least one obligate exchange forming per chromosome pair, while closely spaced crossovers are inhibited by interference. In Arabidopsis, crossover positions can be explained by a diffusion-mediated coarsening model, in which large, approximately evenly spaced foci of the pro-crossover E3 ligase HEI10 grow at the expense of smaller, closely spaced clusters. However, the mechanisms that control HEI10 dynamics during meiosis remain unclear. Here, through a forward genetic screen in Arabidopsis, we identified high crossover rate3 (hcr3), a dominant-negative mutant that reduces crossover interference and increases crossovers genome-wide. HCR3 encodes J3, a co-chaperone related to HSP40, which acts to target protein aggregates and biomolecular condensates to the disassembly chaperone HSP70, thereby promoting proteasomal degradation. Consistently, we show that a network of HCR3 and HSP70 chaperones facilitates proteolysis of HEI10, thereby regulating interference and the recombination landscape. These results reveal a new role for the HSP40/J3-HSP70 chaperones in regulating chromosome-wide dynamics of recombination via control of HEI10 proteolysis.
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Affiliation(s)
- Heejin Kim
- Department of Life Sciences, Pohang University of Science and Technology, Pohang, Republic of Korea
| | - Jaeil Kim
- Department of Life Sciences, Pohang University of Science and Technology, Pohang, Republic of Korea
| | - Namil Son
- Department of Life Sciences, Pohang University of Science and Technology, Pohang, Republic of Korea
| | - Pallas Kuo
- Department of Plant Sciences, University of Cambridge, Cambridge, UK
- Rothamsted Research, Harpenden, UK
| | - Chris Morgan
- John Innes Centre, Norwich Research Park, Norwich, UK
| | - Aurélie Chambon
- Institut Jean-Pierre Bourgin (IJPB), Université Paris-Saclay, INRAE, AgroParisTech, Versailles, France
| | - Dohwan Byun
- Department of Life Sciences, Pohang University of Science and Technology, Pohang, Republic of Korea
| | - Jihye Park
- Department of Life Sciences, Pohang University of Science and Technology, Pohang, Republic of Korea
| | - Youngkyung Lee
- Department of Life Sciences, Pohang University of Science and Technology, Pohang, Republic of Korea
| | - Yeong Mi Park
- Department of Life Sciences, Pohang University of Science and Technology, Pohang, Republic of Korea
| | - John A Fozard
- John Innes Centre, Norwich Research Park, Norwich, UK
| | - Julie Guérin
- Institut Jean-Pierre Bourgin (IJPB), Université Paris-Saclay, INRAE, AgroParisTech, Versailles, France
| | - Aurélie Hurel
- Institut Jean-Pierre Bourgin (IJPB), Université Paris-Saclay, INRAE, AgroParisTech, Versailles, France
| | - Christophe Lambing
- Department of Plant Sciences, University of Cambridge, Cambridge, UK
- Rothamsted Research, Harpenden, UK
| | - Martin Howard
- John Innes Centre, Norwich Research Park, Norwich, UK
| | - Ildoo Hwang
- Department of Life Sciences, Pohang University of Science and Technology, Pohang, Republic of Korea
| | - Raphael Mercier
- Department of Chromosome Biology, Max Planck Institute for Plant Breeding Research, Cologne, Germany
| | - Mathilde Grelon
- Institut Jean-Pierre Bourgin (IJPB), Université Paris-Saclay, INRAE, AgroParisTech, Versailles, France
| | - Ian R Henderson
- Department of Plant Sciences, University of Cambridge, Cambridge, UK
| | - Kyuha Choi
- Department of Life Sciences, Pohang University of Science and Technology, Pohang, Republic of Korea.
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46
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Du H, He K, Zhao J, You Q, Zhou X, Wang J. Co-differential genes between DKD and aging: implications for a diagnostic model of DKD. PeerJ 2024; 12:e17046. [PMID: 38435999 PMCID: PMC10909364 DOI: 10.7717/peerj.17046] [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: 10/30/2023] [Accepted: 02/13/2024] [Indexed: 03/05/2024] Open
Abstract
Objective Diabetic kidney disease (DKD) is a serious complication of diabetes mellitus (DM) that is closely related to aging. In this study, we found co-differential genes between DKD and aging and established a diagnostic model of DKD based on these genes. Methods Differentially expressed genes (DEGs) in DKD were screened using GEO datasets. The intersection of the DEGs of DKD and aging-related genes revealed DKD and aging co-differential genes. Based on this, a genetic diagnostic model for DKD was constructed using LASSO regression. The characteristics of these genes were investigated using consensus clustering, WGCNA, functional enrichment, and immune cell infiltration. Finally, the expression of diagnostic model genes was analyzed using single-cell RNA sequencing (scRNA-seq) in DKD mice (model constructed by streptozotocin (STZ) injection and confirmed by tissue section staining). Results First, there were 159 common differential genes between DKD and aging, 15 of which were significant. These co-differential genes were involved in stress, glucolipid metabolism, and immunological functions. Second, a genetic diagnostic model (including IGF1, CETP, PCK1, FOS, and HSPA1A) was developed based on these genes. Validation of these model genes in scRNA-seq data revealed statistically significant variations in FOS, HSPA1A, and PCK1 gene expression between the early DKD and control groups. Validation of these model genes in the kidneys of DKD mice revealed that Igf1, Fos, Pck1, and Hspa1a had lower expression in DKD mice, with Igf1 expression being statistically significant. Conclusion Our findings suggest that DKD and aging co-differential genes are significant in DKD diagnosis, providing a theoretical basis for novel research directions on DKD.
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Affiliation(s)
- Hongxuan Du
- Lanzhou University, Lanzhou, Gansu, China
- Department of Nephrology, The Second Hospital of Lanzhou University, Lanzhou, Gansu, China
| | - Kaiying He
- Lanzhou University, Lanzhou, Gansu, China
- Department of Nephrology, The Second Hospital of Lanzhou University, Lanzhou, Gansu, China
| | - Jing Zhao
- Department of Pediatric Cardiology, nephrology, rheumatism and Immunology, Gansu Provincial Central Hospital, Lanzhou, Gansu, China
| | - Qicai You
- Lanzhou University, Lanzhou, Gansu, China
- Department of Nephrology, The Second Hospital of Lanzhou University, Lanzhou, Gansu, China
| | - Xiaochun Zhou
- Department of Nephrology, The Second Hospital of Lanzhou University, Lanzhou, Gansu, China
| | - Jianqin Wang
- Lanzhou University, Lanzhou, Gansu, China
- Department of Nephrology, The Second Hospital of Lanzhou University, Lanzhou, Gansu, China
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47
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Gracia B, Montes P, Gutierrez AM, Arun B, Karras GI. Protein-folding chaperones predict structure-function relationships and cancer risk in BRCA1 mutation carriers. Cell Rep 2024; 43:113803. [PMID: 38368609 PMCID: PMC10941025 DOI: 10.1016/j.celrep.2024.113803] [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: 08/15/2023] [Revised: 12/28/2023] [Accepted: 02/01/2024] [Indexed: 02/20/2024] Open
Abstract
Predicting the risk of cancer mutations is critical for early detection and prevention, but differences in allelic severity of human carriers confound risk predictions. Here, we elucidate protein folding as a cellular mechanism driving differences in mutation severity of tumor suppressor BRCA1. Using a high-throughput protein-protein interaction assay, we show that protein-folding chaperone binding patterns predict the pathogenicity of variants in the BRCA1 C-terminal (BRCT) domain. HSP70 selectively binds 94% of pathogenic BRCA1-BRCT variants, most of which engage HSP70 more than HSP90. Remarkably, the magnitude of HSP70 binding linearly correlates with loss of folding and function. We identify a prevalent class of human hypomorphic BRCA1 variants that bind moderately to chaperones and retain partial folding and function. Furthermore, chaperone binding signifies greater mutation penetrance and earlier cancer onset in the clinic. Our findings demonstrate the utility of chaperones as quantitative cellular biosensors of variant folding, phenotypic severity, and cancer risk.
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Affiliation(s)
- Brant Gracia
- Department of Genetics, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Patricia Montes
- Department of Genetics, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Angelica Maria Gutierrez
- Department of Breast Medical Oncology and Clinical Cancer Genetics, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Banu Arun
- Department of Breast Medical Oncology and Clinical Cancer Genetics, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Georgios Ioannis Karras
- Department of Genetics, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA; Genetics and Epigenetics Graduate Program, The University of Texas MD Anderson Cancer Center UTHealth Houston Graduate School of Biomedical Sciences, Houston, TX, USA.
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48
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Liang K, Sun Y, Xie L, Liu Y, You Y, Xu J, Ma F, Huang Y, Song Q, Xiao W, Huang J, Gao X, Chen J. Biologically Self-Assembled Tumor Cell-Derived Cancer Nanovaccines as an All-in-One Platform for Cancer Immunotherapy. ACS NANO 2024; 18:6702-6717. [PMID: 38359389 DOI: 10.1021/acsnano.4c01050] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/17/2024]
Abstract
Tumor cell-derived cancer nanovaccines introduce tumor cell-derived components as functional units that endow the nanovaccine systems with some advantages, especially providing all potential tumor antigens. However, cumbersome assembly steps, potential risks of exogenous adjuvants, as well as insufficient lymph node (LN) targeting and dendritic cell (DC) internalization limit the efficacy and clinical translation of existing tumor cell-derived cancer nanovaccines. Herein, we introduced an endoplasmic reticulum (ER) stress inducer α-mangostin (αM) into tumor cells through poly(d, l-lactide-co-glycolide) nanoparticles and harvested biologically self-assembled tumor cell-derived cancer nanovaccines (αM-Exos) based on the biological process of tumor cell exocytosing nanoparticles through tumor-derived exosomes (TEXs). Besides presenting multiple potential antigens, αM-Exos inherited abundant 70 kDa heat shock proteins (Hsp70s) upregulated by ER stress, which can not only act as endogenous adjuvants but also improve LN targeting and DC internalization. Following subcutaneous injection, αM-Exos efficiently migrated to LNs and was expeditiously endocytosed by DCs, delivering tumor antigens and adjuvants to DCs synchronously, which then powerfully triggered antitumor immune responses and established long-term immune memory. Our study exhibited an all-in-one biologically self-assembled tumor cell-derived cancer nanovaccine platform, and the fully featured cancer nanovaccines assembled efficiently through this platform are promising for desirable cancer immunotherapy.
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Affiliation(s)
- Kaifan Liang
- Department of Pharmaceutics, School of Pharmacy & Shanghai Pudong Hospital, Fudan University, 201203 Shanghai, China
- Key Laboratory of Smart Drug Delivery, Ministry of Education, School of Pharmacy, Fudan University, 201203 Shanghai, China
| | - Yinzhe Sun
- Department of Pharmaceutics, School of Pharmacy & Shanghai Pudong Hospital, Fudan University, 201203 Shanghai, China
- Key Laboratory of Smart Drug Delivery, Ministry of Education, School of Pharmacy, Fudan University, 201203 Shanghai, China
| | - Laozhi Xie
- Department of Pharmaceutics, School of Pharmacy & Shanghai Pudong Hospital, Fudan University, 201203 Shanghai, China
- Key Laboratory of Smart Drug Delivery, Ministry of Education, School of Pharmacy, Fudan University, 201203 Shanghai, China
| | - Yipu Liu
- Department of Pharmaceutics, School of Pharmacy & Shanghai Pudong Hospital, Fudan University, 201203 Shanghai, China
- Key Laboratory of Smart Drug Delivery, Ministry of Education, School of Pharmacy, Fudan University, 201203 Shanghai, China
| | - Yang You
- Department of Pharmaceutics, School of Pharmacy & Shanghai Pudong Hospital, Fudan University, 201203 Shanghai, China
- Key Laboratory of Smart Drug Delivery, Ministry of Education, School of Pharmacy, Fudan University, 201203 Shanghai, China
| | - Jianpei Xu
- Department of Pharmaceutics, School of Pharmacy & Shanghai Pudong Hospital, Fudan University, 201203 Shanghai, China
- Key Laboratory of Smart Drug Delivery, Ministry of Education, School of Pharmacy, Fudan University, 201203 Shanghai, China
| | - Fenfen Ma
- Department of Pharmaceutics, School of Pharmacy & Shanghai Pudong Hospital, Fudan University, 201203 Shanghai, China
- Key Laboratory of Smart Drug Delivery, Ministry of Education, School of Pharmacy, Fudan University, 201203 Shanghai, China
| | - Yukun Huang
- Department of Pharmacology and Chemical Biology, State Key Laboratory of Oncogenes and Related Genes, Shanghai Universities Collaborative Innovation Center for Translational Medicine, Shanghai Jiao Tong University School of Medicine, 200025 Shanghai, China
| | - Qingxiang Song
- Department of Pharmacology and Chemical Biology, State Key Laboratory of Oncogenes and Related Genes, Shanghai Universities Collaborative Innovation Center for Translational Medicine, Shanghai Jiao Tong University School of Medicine, 200025 Shanghai, China
| | - Wenze Xiao
- Department of Rheumatology, Shanghai Pudong Hospital, Fudan University Pudong Medical Center, 201399, Shanghai, China
| | - Jianming Huang
- School of Pharmacy, Fudan University, 201203 Shanghai, China
| | - Xiaoling Gao
- Department of Pharmacology and Chemical Biology, State Key Laboratory of Oncogenes and Related Genes, Shanghai Universities Collaborative Innovation Center for Translational Medicine, Shanghai Jiao Tong University School of Medicine, 200025 Shanghai, China
| | - Jun Chen
- Department of Pharmaceutics, School of Pharmacy & Shanghai Pudong Hospital, Fudan University, 201203 Shanghai, China
- Key Laboratory of Smart Drug Delivery, Ministry of Education, School of Pharmacy, Fudan University, 201203 Shanghai, China
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49
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Lechuga S, Marino-Melendez A, Naydenov NG, Zafar A, Braga-Neto MB, Ivanov AI. Regulation of Epithelial and Endothelial Barriers by Molecular Chaperones. Cells 2024; 13:370. [PMID: 38474334 PMCID: PMC10931179 DOI: 10.3390/cells13050370] [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: 01/05/2024] [Revised: 02/15/2024] [Accepted: 02/16/2024] [Indexed: 03/14/2024] Open
Abstract
The integrity and permeability of epithelial and endothelial barriers depend on the formation of tight junctions, adherens junctions, and a junction-associated cytoskeleton. The establishment of this junction-cytoskeletal module relies on the correct folding and oligomerization of its protein components. Molecular chaperones are known regulators of protein folding and complex formation in different cellular compartments. Mammalian cells possess an elaborate chaperone network consisting of several hundred chaperones and co-chaperones. Only a small part of this network has been linked, however, to the regulation of intercellular adhesions, and the systematic analysis of chaperone functions at epithelial and endothelial barriers is lacking. This review describes the functions and mechanisms of the chaperone-assisted regulation of intercellular junctions. The major focus of this review is on heat shock protein chaperones, their co-chaperones, and chaperonins since these molecules are the focus of the majority of the articles published on the chaperone-mediated control of tissue barriers. This review discusses the roles of chaperones in the regulation of the steady-state integrity of epithelial and vascular barriers as well as the disruption of these barriers by pathogenic factors and extracellular stressors. Since cytoskeletal coupling is essential for junctional integrity and remodeling, chaperone-assisted assembly of the actomyosin cytoskeleton is also discussed.
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Affiliation(s)
- Susana Lechuga
- Department of Inflammation and Immunity, Lerner Research Institute, Cleveland Clinic Foundation, Cleveland, OH 44195, USA; (S.L.); (A.M.-M.); (N.G.N.); (A.Z.); (M.B.B.-N.)
| | - Armando Marino-Melendez
- Department of Inflammation and Immunity, Lerner Research Institute, Cleveland Clinic Foundation, Cleveland, OH 44195, USA; (S.L.); (A.M.-M.); (N.G.N.); (A.Z.); (M.B.B.-N.)
| | - Nayden G. Naydenov
- Department of Inflammation and Immunity, Lerner Research Institute, Cleveland Clinic Foundation, Cleveland, OH 44195, USA; (S.L.); (A.M.-M.); (N.G.N.); (A.Z.); (M.B.B.-N.)
| | - Atif Zafar
- Department of Inflammation and Immunity, Lerner Research Institute, Cleveland Clinic Foundation, Cleveland, OH 44195, USA; (S.L.); (A.M.-M.); (N.G.N.); (A.Z.); (M.B.B.-N.)
| | - Manuel B. Braga-Neto
- Department of Inflammation and Immunity, Lerner Research Institute, Cleveland Clinic Foundation, Cleveland, OH 44195, USA; (S.L.); (A.M.-M.); (N.G.N.); (A.Z.); (M.B.B.-N.)
- Department of Gastroenterology, Hepatology and Nutrition, Digestive Disease Institute, Cleveland Clinic, Cleveland, OH 44195, USA
| | - Andrei I. Ivanov
- Department of Inflammation and Immunity, Lerner Research Institute, Cleveland Clinic Foundation, Cleveland, OH 44195, USA; (S.L.); (A.M.-M.); (N.G.N.); (A.Z.); (M.B.B.-N.)
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50
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Leone S, Srivastava A, Herrero-Ruiz A, Hummel B, Tittel L, Campalastri R, Aprile-Garcia F, Tan JH, Rawat P, Andersson P, Willis AE, Sawarkar R. HSP70 binds to specific non-coding RNA and regulates human RNA polymerase III. Mol Cell 2024; 84:687-701.e7. [PMID: 38266641 DOI: 10.1016/j.molcel.2024.01.001] [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: 02/18/2022] [Revised: 10/20/2023] [Accepted: 01/02/2024] [Indexed: 01/26/2024]
Abstract
Molecular chaperones are critical for protein homeostasis and are implicated in several human pathologies such as neurodegeneration and cancer. While the binding of chaperones to nascent and misfolded proteins has been studied in great detail, the direct interaction between chaperones and RNA has not been systematically investigated. Here, we provide the evidence for widespread interaction between chaperones and RNA in human cells. We show that the major chaperone heat shock protein 70 (HSP70) binds to non-coding RNA transcribed by RNA polymerase III (RNA Pol III) such as tRNA and 5S rRNA. Global chromatin profiling revealed that HSP70 binds genomic sites of transcription by RNA Pol III. Detailed biochemical analyses showed that HSP70 alleviates the inhibitory effect of cognate tRNA transcript on tRNA gene transcription. Thus, our study uncovers an unexpected role of HSP70-RNA interaction in the biogenesis of a specific class of non-coding RNA with wider implications in cancer therapeutics.
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Affiliation(s)
- Sergio Leone
- MRC Toxicology Unit, University of Cambridge, Cambridge CB21QR, UK.
| | | | | | - Barbara Hummel
- Max Planck Institute of Immunobiology and Epigenetics, Freiburg 79108, Germany
| | - Lena Tittel
- Max Planck Institute of Immunobiology and Epigenetics, Freiburg 79108, Germany
| | | | | | - Jun Hao Tan
- MRC Toxicology Unit, University of Cambridge, Cambridge CB21QR, UK
| | - Prashant Rawat
- Max Planck Institute of Immunobiology and Epigenetics, Freiburg 79108, Germany
| | - Patrik Andersson
- Safety Innovation, Clinical Pharmacology and Safety Sciences, AstraZeneca R&D, Gothenburg 43183, Sweden
| | - Anne E Willis
- MRC Toxicology Unit, University of Cambridge, Cambridge CB21QR, UK
| | - Ritwick Sawarkar
- MRC Toxicology Unit, University of Cambridge, Cambridge CB21QR, UK; Max Planck Institute of Immunobiology and Epigenetics, Freiburg 79108, Germany.
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