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Zarrabi A, Perrin D, Kavoosi M, Sommer M, Sezen S, Mehrbod P, Bhushan B, Machaj F, Rosik J, Kawalec P, Afifi S, Bolandi SM, Koleini P, Taheri M, Madrakian T, Łos MJ, Lindsey B, Cakir N, Zarepour A, Hushmandi K, Fallah A, Koc B, Khosravi A, Ahmadi M, Logue S, Orive G, Pecic S, Gordon JW, Ghavami S. Rhabdomyosarcoma: Current Therapy, Challenges, and Future Approaches to Treatment Strategies. Cancers (Basel) 2023; 15:5269. [PMID: 37958442 PMCID: PMC10650215 DOI: 10.3390/cancers15215269] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2023] [Revised: 10/18/2023] [Accepted: 10/29/2023] [Indexed: 11/15/2023] Open
Abstract
Rhabdomyosarcoma is a rare cancer arising in skeletal muscle that typically impacts children and young adults. It is a worldwide challenge in child health as treatment outcomes for metastatic and recurrent disease still pose a major concern for both basic and clinical scientists. The treatment strategies for rhabdomyosarcoma include multi-agent chemotherapies after surgical resection with or without ionization radiotherapy. In this comprehensive review, we first provide a detailed clinical understanding of rhabdomyosarcoma including its classification and subtypes, diagnosis, and treatment strategies. Later, we focus on chemotherapy strategies for this childhood sarcoma and discuss the impact of three mechanisms that are involved in the chemotherapy response including apoptosis, macro-autophagy, and the unfolded protein response. Finally, we discuss in vivo mouse and zebrafish models and in vitro three-dimensional bioengineering models of rhabdomyosarcoma to screen future therapeutic approaches and promote muscle regeneration.
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Affiliation(s)
- Ali Zarrabi
- Department of Biomedical Engineering, Faculty of Engineering and Natural Sciences, Istinye University, Sariyer, Istanbul 34396, Türkiye; (A.Z.); (A.Z.)
| | - David Perrin
- Section of Orthopaedic Surgery, Department of Surgery, University of Manitoba, Winnipeg, MB R3E 0V9, Canada; (D.P.); (M.S.)
| | - Mahboubeh Kavoosi
- Department of Human Anatomy and Cell Science, University of Manitoba College of Medicine, Winnipeg, MB R3E 0V9, Canada; (M.K.); (B.B.); (F.M.); (J.R.); (P.K.); (S.A.); (S.M.B.); (P.K.); (B.L.); (S.L.); (J.W.G.)
- Biotechnology Center, Silesian University of Technology, 8 Krzywousty St., 44-100 Gliwice, Poland;
| | - Micah Sommer
- Section of Orthopaedic Surgery, Department of Surgery, University of Manitoba, Winnipeg, MB R3E 0V9, Canada; (D.P.); (M.S.)
- Section of Physical Medicine and Rehabilitation, Department of Internal Medicine, University of Manitoba, Winnipeg, MB R3E 0V9, Canada
| | - Serap Sezen
- Faculty of Engineering and Natural Sciences, Sabanci University, Tuzla, Istanbul 34956, Türkiye; (S.S.); (N.C.); (B.K.)
| | - Parvaneh Mehrbod
- Department of Influenza and Respiratory Viruses, Pasteur Institute of Iran, Tehran 1316943551, Iran;
| | - Bhavya Bhushan
- Department of Human Anatomy and Cell Science, University of Manitoba College of Medicine, Winnipeg, MB R3E 0V9, Canada; (M.K.); (B.B.); (F.M.); (J.R.); (P.K.); (S.A.); (S.M.B.); (P.K.); (B.L.); (S.L.); (J.W.G.)
- Department of Anatomy and Cell Biology, School of Biomedical Sciences, Faculty of Science, McGill University, Montreal, QC H3A 0C7, Canada
| | - Filip Machaj
- Department of Human Anatomy and Cell Science, University of Manitoba College of Medicine, Winnipeg, MB R3E 0V9, Canada; (M.K.); (B.B.); (F.M.); (J.R.); (P.K.); (S.A.); (S.M.B.); (P.K.); (B.L.); (S.L.); (J.W.G.)
- Department of Physiology, Pomeranian Medical University, 70-111 Szczecin, Poland
- Department of Biochemistry and Molecular Biology, University of Chicago, Chicago, IL 60637, USA
| | - Jakub Rosik
- Department of Human Anatomy and Cell Science, University of Manitoba College of Medicine, Winnipeg, MB R3E 0V9, Canada; (M.K.); (B.B.); (F.M.); (J.R.); (P.K.); (S.A.); (S.M.B.); (P.K.); (B.L.); (S.L.); (J.W.G.)
- Department of Physiology, Pomeranian Medical University, 70-111 Szczecin, Poland
- Department of Chemistry, University of Chicago, Chicago, IL 60637, USA
| | - Philip Kawalec
- Department of Human Anatomy and Cell Science, University of Manitoba College of Medicine, Winnipeg, MB R3E 0V9, Canada; (M.K.); (B.B.); (F.M.); (J.R.); (P.K.); (S.A.); (S.M.B.); (P.K.); (B.L.); (S.L.); (J.W.G.)
- Section of Neurosurgery, Department of Surgery, University of Manitoba, Health Sciences Centre, Winnipeg, MB R3A 1R9, Canada
| | - Saba Afifi
- Department of Human Anatomy and Cell Science, University of Manitoba College of Medicine, Winnipeg, MB R3E 0V9, Canada; (M.K.); (B.B.); (F.M.); (J.R.); (P.K.); (S.A.); (S.M.B.); (P.K.); (B.L.); (S.L.); (J.W.G.)
| | - Seyed Mohammadreza Bolandi
- Department of Human Anatomy and Cell Science, University of Manitoba College of Medicine, Winnipeg, MB R3E 0V9, Canada; (M.K.); (B.B.); (F.M.); (J.R.); (P.K.); (S.A.); (S.M.B.); (P.K.); (B.L.); (S.L.); (J.W.G.)
| | - Peiman Koleini
- Department of Human Anatomy and Cell Science, University of Manitoba College of Medicine, Winnipeg, MB R3E 0V9, Canada; (M.K.); (B.B.); (F.M.); (J.R.); (P.K.); (S.A.); (S.M.B.); (P.K.); (B.L.); (S.L.); (J.W.G.)
| | - Mohsen Taheri
- Genetics of Non-Communicable Disease Research Center, Zahedan University of Medical Sciences, Zahedan 9816743463, Iran;
| | - Tayyebeh Madrakian
- Department of Analytical Chemistry, Faculty of Chemistry, Bu-Ali Sina University, Hamedan 6517838695, Iran; (T.M.); (M.A.)
| | - Marek J. Łos
- Biotechnology Center, Silesian University of Technology, 8 Krzywousty St., 44-100 Gliwice, Poland;
| | - Benjamin Lindsey
- Department of Human Anatomy and Cell Science, University of Manitoba College of Medicine, Winnipeg, MB R3E 0V9, Canada; (M.K.); (B.B.); (F.M.); (J.R.); (P.K.); (S.A.); (S.M.B.); (P.K.); (B.L.); (S.L.); (J.W.G.)
| | - Nilufer Cakir
- Faculty of Engineering and Natural Sciences, Sabanci University, Tuzla, Istanbul 34956, Türkiye; (S.S.); (N.C.); (B.K.)
| | - Atefeh Zarepour
- Department of Biomedical Engineering, Faculty of Engineering and Natural Sciences, Istinye University, Sariyer, Istanbul 34396, Türkiye; (A.Z.); (A.Z.)
| | - Kiavash Hushmandi
- Department of Food Hygiene and Quality Control, Division of Epidemiology, Faculty of Veterinary Medicine, University of Tehran, Tehran 1419963114, Iran;
| | - Ali Fallah
- Integrated Manufacturing Technologies Research and Application Center, Sabanci University, Tuzla, Istanbul 34956, Türkiye;
| | - Bahattin Koc
- Faculty of Engineering and Natural Sciences, Sabanci University, Tuzla, Istanbul 34956, Türkiye; (S.S.); (N.C.); (B.K.)
- Integrated Manufacturing Technologies Research and Application Center, Sabanci University, Tuzla, Istanbul 34956, Türkiye;
- Sabanci University Nanotechnology Research and Application Center (SUNUM), Tuzla, Istanbul 34956, Türkiye
| | - Arezoo Khosravi
- Department of Genetics and Bioengineering, Faculty of Engineering and Natural Sciences, Istanbul Okan University, Istanbul 34959, Türkiye;
| | - Mazaher Ahmadi
- Department of Analytical Chemistry, Faculty of Chemistry, Bu-Ali Sina University, Hamedan 6517838695, Iran; (T.M.); (M.A.)
| | - Susan Logue
- Department of Human Anatomy and Cell Science, University of Manitoba College of Medicine, Winnipeg, MB R3E 0V9, Canada; (M.K.); (B.B.); (F.M.); (J.R.); (P.K.); (S.A.); (S.M.B.); (P.K.); (B.L.); (S.L.); (J.W.G.)
| | - Gorka Orive
- NanoBioCel Research Group, School of Pharmacy, University of the Basque Country (UPV/EHU), 01007 Vitoria-Gasteiz, Spain;
- University Institute for Regenerative Medicine and Oral Implantology–UIRMI (UPV/EHU-Fundación Eduardo Anitua), 01007 Vitoria-Gasteiz, Spain
- Bioaraba, NanoBioCel Research Group, 01006 Vitoria-Gasteiz, Spain
| | - Stevan Pecic
- Department of Chemistry and Biochemistry, California State University Fullerton, Fullerton, CA 92831, USA;
| | - Joseph W. Gordon
- Department of Human Anatomy and Cell Science, University of Manitoba College of Medicine, Winnipeg, MB R3E 0V9, Canada; (M.K.); (B.B.); (F.M.); (J.R.); (P.K.); (S.A.); (S.M.B.); (P.K.); (B.L.); (S.L.); (J.W.G.)
- College of Nursing, Rady Faculty of Health Science, University of Manitoba, Winnipeg, MB R3E 0V9, Canada
| | - Saeid Ghavami
- Department of Human Anatomy and Cell Science, University of Manitoba College of Medicine, Winnipeg, MB R3E 0V9, Canada; (M.K.); (B.B.); (F.M.); (J.R.); (P.K.); (S.A.); (S.M.B.); (P.K.); (B.L.); (S.L.); (J.W.G.)
- Biology of Breathing Theme, Children Hospital Research Institute of Manitoba, University of Manitoba, Winnipeg, MB R3E 0V9, Canada
- Autophagy Research Center, Shiraz University of Medical Sciences, Shiraz 7134845794, Iran
- Academy of Silesia, Faculty of Medicine, Rolna 43, 40-555 Katowice, Poland
- Research Institutes of Oncology and Hematology, Cancer Care Manitoba-University of Manitoba, Winnipeg, MB R3E 0V9, Canada
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Dadashkhan S, Mirmotalebisohi SA, Poursheykhi H, Sameni M, Ghani S, Abbasi M, Kalantari S, Zali H. Deciphering crucial genes in multiple sclerosis pathogenesis and drug repurposing: A systems biology approach. J Proteomics 2023; 280:104890. [PMID: 36966969 DOI: 10.1016/j.jprot.2023.104890] [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: 09/03/2022] [Revised: 02/14/2023] [Accepted: 03/09/2023] [Indexed: 04/10/2023]
Abstract
This study employed systems biology and high-throughput technologies to analyze complex molecular components of MS pathophysiology, combining data from multiple omics sources to identify potential biomarkers and propose therapeutic targets and repurposed drugs for MS treatment. This study analyzed GEO microarray datasets and MS proteomics data using geWorkbench, CTD, and COREMINE to identify differentially expressed genes associated with MS disease. Protein-protein interaction networks were constructed using Cytoscape and its plugins, and functional enrichment analysis was performed to identify crucial molecules. A drug-gene interaction network was also created using DGIdb to propose medications. This study identified 592 differentially expressed genes (DEGs) associated with MS disease using GEO, proteomics, and text-mining datasets. 37 DEGs were found to be important by topographical network studies, and 6 were identified as the most significant for MS pathophysiology. Additionally, we proposed six drugs that target these key genes. Crucial molecules identified in this study were dysregulated in MS and likely play a key role in the disease mechanism, warranting further research. Additionally, we proposed repurposing certain FDA-approved drugs for MS treatment. Our in silico results were supported by previous experimental research on some of the target genes and drugs. SIGNIFICANCE: As the long-lasting investigations continue to discover new pathological territories in neurodegeneration, here we apply a systems biology approach to determine multiple sclerosis's molecular and pathophysiological origin and identify multiple sclerosis crucial genes that contribute to candidating new biomarkers and proposing new medications.
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Affiliation(s)
- Sadaf Dadashkhan
- Molecular Medicine Research Centre, Universitätsklinikum Jena, Jena, Germany; Department of Biology, Science and Research Branch, Islamic Azad University, Tehran, Iran
| | - Seyed Amir Mirmotalebisohi
- Student Research Committee, Department of Biotechnology, School of Advanced Technologies in Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran; Cellular and Molecular Biology Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Hossein Poursheykhi
- Department of New Scientist, Faculty of Medical Sciences, Tehran Branch, Islamic Azad University, Tehran, Iran
| | - Marzieh Sameni
- Student Research Committee, Department of Biotechnology, School of Advanced Technologies in Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran; Cellular and Molecular Biology Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Sepideh Ghani
- Cellular and Molecular Biology Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran; Department of Biotechnology, School of Advanced Technologies in Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | | | - Sima Kalantari
- Cellular and Molecular Biology Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran; Department of Biotechnology, School of Advanced Technologies in Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran; Regenerative Medicine Group (REMED), Universal Scientific Education & Research Network (USERN), Tehran, Iran
| | - Hakimeh Zali
- Department of Tissue Engineering and Applied Cell Sciences, School of Advanced Technologies in Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
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Kohler V, Andréasson C. Reversible protein assemblies in the proteostasis network in health and disease. Front Mol Biosci 2023; 10:1155521. [PMID: 37021114 PMCID: PMC10067754 DOI: 10.3389/fmolb.2023.1155521] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2023] [Accepted: 03/09/2023] [Indexed: 04/07/2023] Open
Abstract
While proteins populating their native conformations constitute the functional entities of cells, protein aggregates are traditionally associated with cellular dysfunction, stress and disease. During recent years, it has become clear that large aggregate-like protein condensates formed via liquid-liquid phase separation age into more solid aggregate-like particles that harbor misfolded proteins and are decorated by protein quality control factors. The constituent proteins of the condensates/aggregates are disentangled by protein disaggregation systems mainly based on Hsp70 and AAA ATPase Hsp100 chaperones prior to their handover to refolding and degradation systems. Here, we discuss the functional roles that condensate formation/aggregation and disaggregation play in protein quality control to maintain proteostasis and why it matters for understanding health and disease.
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Affiliation(s)
- Verena Kohler
- Institute of Molecular Biosciences, University of Graz, Graz, Austria
| | - Claes Andréasson
- Department of Molecular Biosciences, Stockholm University, Stockholm, Sweden
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Tedesco B, Vendredy L, Timmerman V, Poletti A. The chaperone-assisted selective autophagy complex dynamics and dysfunctions. Autophagy 2023:1-23. [PMID: 36594740 DOI: 10.1080/15548627.2022.2160564] [Citation(s) in RCA: 20] [Impact Index Per Article: 20.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023] Open
Abstract
Each protein must be synthesized with the correct amino acid sequence, folded into its native structure, and transported to a relevant subcellular location and protein complex. If any of these steps fail, the cell has the capacity to break down aberrant proteins to maintain protein homeostasis (also called proteostasis). All cells possess a set of well-characterized protein quality control systems to minimize protein misfolding and the damage it might cause. Autophagy, a conserved pathway for the degradation of long-lived proteins, aggregates, and damaged organelles, was initially characterized as a bulk degradation pathway. However, it is now clear that autophagy also contributes to intracellular homeostasis by selectively degrading cargo material. One of the pathways involved in the selective removal of damaged and misfolded proteins is chaperone-assisted selective autophagy (CASA). The CASA complex is composed of three main proteins (HSPA, HSPB8 and BAG3), essential to maintain protein homeostasis in muscle and neuronal cells. A failure in the CASA complex, caused by mutations in the respective coding genes, can lead to (cardio)myopathies and neurodegenerative diseases. Here, we summarize our current understanding of the CASA complex and its dynamics. We also briefly discuss how CASA complex proteins are involved in disease and may represent an interesting therapeutic target.Abbreviation ALP: autophagy lysosomal pathway; ALS: amyotrophic lateral sclerosis; AMOTL1: angiomotin like 1; ARP2/3: actin related protein 2/3; BAG: BAG cochaperone; BAG3: BAG cochaperone 3; CASA: chaperone-assisted selective autophagy; CMA: chaperone-mediated autophagy; DNAJ/HSP40: DnaJ heat shock protein family (Hsp40); DRiPs: defective ribosomal products; EIF2A/eIF2α: eukaryotic translation initiation factor 2A; EIF2AK1/HRI: eukaryotic translation initiation factor 2 alpha kinase 1; GABARAP: GABA type A receptor-associated protein; HDAC6: histone deacetylase 6; HSP: heat shock protein; HSPA/HSP70: heat shock protein family A (Hsp70); HSP90: heat shock protein 90; HSPB8: heat shock protein family B (small) member 8; IPV: isoleucine-proline-valine; ISR: integrated stress response; KEAP1: kelch like ECH associated protein 1; LAMP2A: lysosomal associated membrane protein 2A; LATS1: large tumor suppressor kinase 1; LIR: LC3-interacting region; MAP1LC3/LC3: microtubule associated protein 1 light chain 3; MTOC: microtubule organizing center; MTOR: mechanistic target of rapamycin kinase; NFKB/NF-κB: nuclear factor kappa B; NFE2L2: NFE2 like bZIP transcription factor 2; PLCG/PLCγ: phospholipase C gamma; polyQ: polyglutamine; PQC: protein quality control; PxxP: proline-rich; RAN translation: repeat-associated non-AUG translation; SG: stress granule; SOD1: superoxide dismutase 1; SQSTM1/p62: sequestosome 1; STUB1/CHIP: STIP1 homology and U-box containing protein 1; STK: serine/threonine kinase; SYNPO: synaptopodin; TBP: TATA-box binding protein; TARDBP/TDP-43: TAR DNA binding protein; TFEB: transcription factor EB; TPR: tetratricopeptide repeats; TSC1: TSC complex subunit 1; UBA: ubiquitin associated; UPS: ubiquitin-proteasome system; WW: tryptophan-tryptophan; WWTR1: WW domain containing transcription regulator 1; YAP1: Yes1 associated transcriptional regulator.
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Affiliation(s)
- Barbara Tedesco
- Laboratory of Experimental Biology, Dipartimento di Scienze Farmacologiche e Biomolecolari, Dipartimento di Eccellenza 2018-2027, Università degli studi di Milano, Milan, Italy.,Unit of Medical Genetics and Neurogenetics, Fondazione IRCCS Istituto Neurologico Carlo Besta, Milan, Italy
| | - Leen Vendredy
- Peripheral Neuropathy Research Group, Department of Biomedical Sciences, Institute Born Bunge, University of Antwerp, Antwerpen, Belgium
| | - Vincent Timmerman
- Peripheral Neuropathy Research Group, Department of Biomedical Sciences, Institute Born Bunge, University of Antwerp, Antwerpen, Belgium
| | - Angelo Poletti
- Laboratory of Experimental Biology, Dipartimento di Scienze Farmacologiche e Biomolecolari, Dipartimento di Eccellenza 2018-2027, Università degli studi di Milano, Milan, Italy
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Protein Quality Control in Glioblastoma: A Review of the Current Literature with New Perspectives on Therapeutic Targets. Int J Mol Sci 2022; 23:ijms23179734. [PMID: 36077131 PMCID: PMC9456419 DOI: 10.3390/ijms23179734] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2022] [Revised: 08/12/2022] [Accepted: 08/24/2022] [Indexed: 11/17/2022] Open
Abstract
Protein quality control allows eukaryotes to maintain proteostasis under the stress of constantly changing conditions. In this review, we discuss the current literature on PQC, highlighting flaws that must exist for malignancy to occur. At the nidus of PQC, the expression of BAG1-6 reflects the cell environment; each isoform directs proteins toward different, parallel branches of the quality control cascade. The sum of these branches creates a net shift toward either homeostasis or apoptosis. With an established role in ALP, Bag3 is necessary for cell survival in stress conditions including those of the cancerous niche (i.e., hypoxia, hypermutation). Evidence suggests that excessive Bag3–HSP70 activity not only sustains, but also propagates cancers. Its role is anti-apoptotic—which allows malignant cells to persist—and intercellular—with the production of infectious ‘oncosomes’ enabling cancer expansion and recurrence. While Bag3 has been identified as a key prognostic indicator in several cancer types, its investigation is limited regarding glioblastoma. The cochaperone HSP70 has been strongly linked with GBM, while ALP inhibitors have been shown to improve GBM susceptibility to chemotherapeutics. Given the highly resilient, frequently recurrent nature of GBM, the targeting of Bag3 is a necessary consideration for the successful and definitive treatment of GBM.
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Kulkarni AS, Burns MR, Brundin P, Wesson DW. Linking α-synuclein-induced synaptopathy and neural network dysfunction in early Parkinson’s disease. Brain Commun 2022; 4:fcac165. [PMID: 35822101 PMCID: PMC9272065 DOI: 10.1093/braincomms/fcac165] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2021] [Revised: 03/11/2022] [Accepted: 06/20/2022] [Indexed: 01/18/2023] Open
Abstract
Abstract
The prodromal phase of Parkinson’s disease is characterized by aggregation of the misfolded pathogenic protein α-synuclein in select neural centres, co-occurring with non-motor symptoms including sensory and cognitive loss, and emotional disturbances. It is unclear whether neuronal loss is significant during the prodrome. Underlying these symptoms are synaptic impairments and aberrant neural network activity. However, the relationships between synaptic defects and network-level perturbations are not established. In experimental models, pathological α-synuclein not only impacts neurotransmission at the synaptic level, but also leads to changes in brain network-level oscillatory dynamics—both of which likely contribute to non-motor deficits observed in Parkinson’s disease. Here we draw upon research from both human subjects and experimental models to propose a ‘synapse to network prodrome cascade’ wherein before overt cell death, pathological α-synuclein induces synaptic loss and contributes to aberrant network activity, which then gives rise to prodromal symptomology. As the disease progresses, abnormal patterns of neural activity ultimately lead to neuronal loss and clinical progression of disease. Finally, we outline goals and research needed to unravel the basis of functional impairments in Parkinson’s disease and other α-synucleinopathies.
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Affiliation(s)
- Aishwarya S Kulkarni
- Department of Pharmacology & Therapeutics, University of Florida , 1200 Newell Dr, Gainesville, FL 32610 , USA
| | - Matthew R Burns
- Department of Neurology, University of Florida , 1200 Newell Dr, Gainesville, FL 32610 , USA
- Norman Fixel Institute for Neurological Disorders, University of Florida , 1200 Newell Dr, Gainesville, FL 32610 , USA
| | - Patrik Brundin
- Pharma Research and Early Development (pRED), F. Hoffman-La Roche , Little Falls, NJ , USA
| | - Daniel W Wesson
- Department of Pharmacology & Therapeutics, University of Florida , 1200 Newell Dr, Gainesville, FL 32610 , USA
- Norman Fixel Institute for Neurological Disorders, University of Florida , 1200 Newell Dr, Gainesville, FL 32610 , USA
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Guo J, Du X, Li C. BAG family proteins contributes to autophagy-mediated multidrug resistance of tumor. Clin Transl Oncol 2022; 24:1492-1500. [PMID: 35278199 DOI: 10.1007/s12094-022-02819-6] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2021] [Accepted: 02/22/2022] [Indexed: 12/13/2022]
Abstract
Multidrug resistance (MDR) is a significant cause of tumor treatment failure. Accumulating evidence suggests that autophagy plays a significant role in the development of MDR. Autophagy is a conserved mechanism that maintains tumor homeostasis by removing damaged mitochondria. However, the specific regulatory mechanism is unclear. Here, we summarize recent studies on the role of autophagy in the development of MDR and the initiation of mitophagy by Bcl-2-associated athanogene (BAG) family proteins. Additionally, this mini-review emphasizes the regulatory role of BAG family proteins, which maintain mitochondrial homeostasis by regulating the PINK1/Parkin pathway. Elucidation of the regulatory mechanisms of mitophagy may foster the development of clinical therapeutic strategies for MDR tumors.
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Affiliation(s)
- Jufang Guo
- Department of Obstetrics and Gynecology, Jinniu District Maternal and Child Health Hospital, Chengdu, China
| | - Xuelian Du
- Department of Obstetrics and Gynecology, Jinniu District Maternal and Child Health Hospital, Chengdu, China
| | - Chaolin Li
- Department of Obstetrics and Gynecology, Jinniu District Maternal and Child Health Hospital, Chengdu, China.
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Li K, Deng X, Feng G, Chen Y. Knockdown of Bcl-2-Associated Athanogene-3 Can Enhance the Efficacy of BGJ398 via Suppressing Migration and Inducing Apoptosis in Gastric Cancer. Dig Dis Sci 2021; 66:3036-3044. [PMID: 33089486 DOI: 10.1007/s10620-020-06640-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/27/2020] [Accepted: 09/24/2020] [Indexed: 12/13/2022]
Abstract
BACKGROUND Gastric cancer (GC) is one of the most common malignancies of the digestive tract worldwide, and cancer cell resistance against anticancer drugs remains a major challenge for GC treatment. Nvp-BGJ398 (BGJ398) is considered as a common drug for cancer treatment; however, Bcl-2-associated athanogene-3 (BAG3) plays an important role in drug resistance. AIMS To investigate the function of BAG3 on the sensitivity of GC cells to BGJ398. METHODS The expression of BAG3 in GC cells and GC resistance cells was examined by qRT-PCR and western blot. The resistance to BGJ398 was detected by viability assay, and a half-maximal inhibitory concentration (IC50) was calculated. The cell migration and apoptosis were determined by wound-healing assay and flow cytometry assay. RESULTS BAG3 was highly expressed in drug-resistant cells Fu97R and Snu16R. BAG3 was also associated with sensitivity of Snu16 cells to BGJ398, promoting migration but inhibiting apoptosis. However, knockdown of heat shock transcription factor 1 (HSF1) suppressed BAG3 expression and lowered the sensitivity to BGJ398 in Snu16R cells. Knockdown of BAG3 inhibited tumor growth and cell apoptosis but induced cell apoptosis and amplified the sensitivity to BGJ398 in Snu16R cells, followed by enhancing BGJ398-induced antitumor function in a Snu16R-derived xenograft mouse model. CONCLUSION The mechanism of resistance to BGJ398 in GC is mediated by BAG3/HSF1, and combined treatment with shBAG3 could improve the efficacy of BGJ398 in GC. Thus, BAG3-targeted therapy improves the antitumor efficacy of BGJ398, which might provide a novel therapeutic strategy for GC.
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Affiliation(s)
- Ke Li
- Department of General Surgery, Chongqing Traditional Chinese Medicine Hospital, No. 6 Panxi Qizhi Road, Jiangbei District, Chongqing, 400000, China
| | - Xiang Deng
- Department of General Surgery, Chongqing Traditional Chinese Medicine Hospital, No. 6 Panxi Qizhi Road, Jiangbei District, Chongqing, 400000, China
| | - Guangjing Feng
- Department of General Surgery, Chongqing Traditional Chinese Medicine Hospital, No. 6 Panxi Qizhi Road, Jiangbei District, Chongqing, 400000, China.
| | - Yi Chen
- Department of General Surgery, Chongqing Traditional Chinese Medicine Hospital, No. 6 Panxi Qizhi Road, Jiangbei District, Chongqing, 400000, China
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Fu D, Zhang B, Wu S, Zhang Y, Xie J, Ning W, Jiang H. Prognosis and Characterization of Immune Microenvironment in Acute Myeloid Leukemia Through Identification of an Autophagy-Related Signature. Front Immunol 2021; 12:695865. [PMID: 34135913 PMCID: PMC8200670 DOI: 10.3389/fimmu.2021.695865] [Citation(s) in RCA: 30] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2021] [Accepted: 05/11/2021] [Indexed: 12/04/2022] Open
Abstract
Acute myeloid leukemia (AML) is one of the most common hematopoietic malignancies that has an unfavorable outcome and a high rate of relapse. Autophagy plays a vital role in the development of and therapeutic responses to leukemia. This study identifies a potential autophagy-related signature to monitor the prognoses of patients of AML. Transcriptomic profiles of AML patients (GSE37642) with the relevant clinical information were downloaded from Gene Expression Omnibus (GEO) as the training set while TCGA-AML and GSE12417 were used as validation cohorts. Univariate regression analyses and multivariate stepwise Cox regression analysis were respectively applied to identify the autophagy-related signature. The univariate Cox regression analysis identified 32 autophagy-related genes (ARGs) that were significantly associated with the overall survival (OS) of the patients, and were mainly rich in signaling pathways for autophagy, p53, AMPK, and TNF. A prognostic signature that comprised eight ARGs (BAG3, CALCOCO2, CAMKK2, CANX, DAPK1, P4HB, TSC2, and ULK1) and had good predictive capacity was established by LASSO–Cox stepwise regression analysis. High-risk patients were found to have significantly shorter OS than patients in low-risk group. The signature can be used as an independent prognostic predictor after adjusting for clinicopathological parameters, and was validated on two external AML sets. Differentially expressed genes analyzed in two groups were involved in inflammatory and immune signaling pathways. An analysis of tumor-infiltrating immune cells confirmed that high-risk patients had a strong immunosuppressive microenvironment. Potential druggable OS-related ARGs were then investigated through protein–drug interactions. This study provides a systematic analysis of ARGs and develops an OS-related prognostic predictor for AML patients. Further work is needed to verify its clinical utility and identify the underlying molecular mechanisms in AML.
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Affiliation(s)
- Denggang Fu
- Department of Pediatrics, The Wells Center for Pediatric Research, Indiana University School of Medicine, Indianapolis, IN, United States
| | - Biyu Zhang
- School of Pharmacy and Life Science, Jiujiang University, Jiujiang, China
| | - Shiyong Wu
- Department of Pediatrics, The Wells Center for Pediatric Research, Indiana University School of Medicine, Indianapolis, IN, United States
| | - Yinghua Zhang
- Department of Pediatrics, The Wells Center for Pediatric Research, Indiana University School of Medicine, Indianapolis, IN, United States
| | - Jingwu Xie
- Department of Pediatrics, The Wells Center for Pediatric Research, Indiana University School of Medicine, Indianapolis, IN, United States.,The IU Simon Comprehensive Cancer Center, Indiana University, Indianapolis, IN, United States
| | - Wangbin Ning
- Department of Rheumatology and Immunology, Xiangya Hospital, Central South University, Changsha, China
| | - Hua Jiang
- Department of Pediatrics, The Wells Center for Pediatric Research, Indiana University School of Medicine, Indianapolis, IN, United States
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10
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Almasi S, Crawford Parks TE, Ravel-Chapuis A, MacKenzie A, Côté J, Cowan KN, Jasmin BJ. Differential regulation of autophagy by STAU1 in alveolar rhabdomyosarcoma and non-transformed skeletal muscle cells. Cell Oncol (Dordr) 2021; 44:851-870. [PMID: 33899158 DOI: 10.1007/s13402-021-00607-y] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/30/2021] [Indexed: 11/30/2022] Open
Abstract
PURPOSE Recent work has highlighted the therapeutic potential of targeting autophagy to modulate cell survival in a variety of diseases including cancer. Recently, we found that the RNA-binding protein Staufen1 (STAU1) is highly expressed in alveolar rhabdomyosarcoma (ARMS) and that this abnormal expression promotes tumorigenesis. Here, we asked whether STAU1 is involved in the regulation of autophagy in ARMS cells. METHODS We assessed the impact of STAU1 expression modulation in ARMS cell lines (RH30 and RH41), non-transformed skeletal muscle cells (C2C12) and STAU1-transgenic mice using complementary techniques. RESULTS We found that STAU1 silencing reduces autophagy in the ARMS cell lines RH30 and RH41, while increasing their apoptosis. Mechanistically, this inhibitory effect was found to be caused by a direct negative impact of STAU1 depletion on the stability of Beclin-1 (BECN1) and ATG16L1 mRNAs, as well as by an indirect inhibition of JNK signaling via increased expression of Dual specificity phosphatase 8 (DUSP8). Pharmacological activation of JNK or expression silencing of DUSP8 was sufficient to restore autophagy in STAU1-depleted cells. By contrast, we found that STAU1 downregulation in non-transformed skeletal muscle cells activates autophagy in a mTOR-dependent manner, without promoting apoptosis. A similar effect was observed in skeletal muscles obtained from STAU1-overexpressing transgenic mice. CONCLUSIONS Together, our data indicate an effect of STAU1 on autophagy regulation in ARMS cells and its differential role in non-transformed skeletal muscle cells. Our findings suggest a cancer-specific potential of targeting STAU1 for the treatment of ARMS.
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Affiliation(s)
- Shekoufeh Almasi
- Department of Cellular and Molecular Medicine, Faculty of Medicine, University of Ottawa, Ottawa, Ontario, K1H 8M5, Canada.,The Eric J. Poulin Centre for Neuromuscular Diseases, Faculty of Medicine, University of Ottawa, Ottawa, ON, Canada
| | - Tara E Crawford Parks
- Department of Cellular and Molecular Medicine, Faculty of Medicine, University of Ottawa, Ottawa, Ontario, K1H 8M5, Canada.,The Eric J. Poulin Centre for Neuromuscular Diseases, Faculty of Medicine, University of Ottawa, Ottawa, ON, Canada
| | - Aymeric Ravel-Chapuis
- Department of Cellular and Molecular Medicine, Faculty of Medicine, University of Ottawa, Ottawa, Ontario, K1H 8M5, Canada.,The Eric J. Poulin Centre for Neuromuscular Diseases, Faculty of Medicine, University of Ottawa, Ottawa, ON, Canada
| | - Alex MacKenzie
- Department of Cellular and Molecular Medicine, Faculty of Medicine, University of Ottawa, Ottawa, Ontario, K1H 8M5, Canada.,The Eric J. Poulin Centre for Neuromuscular Diseases, Faculty of Medicine, University of Ottawa, Ottawa, ON, Canada.,Division of Endocrinology, Department of Paediatric, CHEO, University of Ottawa, Ottawa, ON, Canada
| | - Jocelyn Côté
- Department of Cellular and Molecular Medicine, Faculty of Medicine, University of Ottawa, Ottawa, Ontario, K1H 8M5, Canada.,The Eric J. Poulin Centre for Neuromuscular Diseases, Faculty of Medicine, University of Ottawa, Ottawa, ON, Canada
| | - Kyle N Cowan
- Department of Cellular and Molecular Medicine, Faculty of Medicine, University of Ottawa, Ottawa, Ontario, K1H 8M5, Canada.,Division of Paediatric Surgery, Department of Surgery, CHEO, University of Ottawa, Ottawa, ON, Canada.,Molecular Biomedicine Program, CHEO, Ottawa, ON, Canada
| | - Bernard J Jasmin
- Department of Cellular and Molecular Medicine, Faculty of Medicine, University of Ottawa, Ottawa, Ontario, K1H 8M5, Canada. .,The Eric J. Poulin Centre for Neuromuscular Diseases, Faculty of Medicine, University of Ottawa, Ottawa, ON, Canada.
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11
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Cristofani R, Crippa V, Cicardi ME, Tedesco B, Ferrari V, Chierichetti M, Casarotto E, Piccolella M, Messi E, Galbiati M, Rusmini P, Poletti A. A Crucial Role for the Protein Quality Control System in Motor Neuron Diseases. Front Aging Neurosci 2020; 12:191. [PMID: 32792938 PMCID: PMC7385251 DOI: 10.3389/fnagi.2020.00191] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2020] [Accepted: 06/02/2020] [Indexed: 12/11/2022] Open
Abstract
Motor neuron diseases (MNDs) are fatal diseases characterized by loss of motor neurons in the brain cortex, in the bulbar region, and/or in the anterior horns of the spinal cord. While generally sporadic, inherited forms linked to mutant genes encoding altered RNA/protein products have also been described. Several different mechanisms have been found altered or dysfunctional in MNDs, like the protein quality control (PQC) system. In this review, we will discuss how the PQC system is affected in two MNDs—spinal and bulbar muscular atrophy (SBMA) and amyotrophic lateral sclerosis (ALS)—and how this affects the clearance of aberrantly folded proteins, which accumulate in motor neurons, inducing dysfunctions and their death. In addition, we will discuss how the PQC system can be targeted to restore proper cell function, enhancing the survival of affected cells in MNDs.
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Affiliation(s)
- Riccardo Cristofani
- Laboratorio di Biologia Applicata, Dipartimento di Scienze Farmacologiche e Biomolecolari, Dipartimento di Eccellenza 2018-2022, Università degli Studi di Milano, Milan, Italy
| | - Valeria Crippa
- Laboratorio di Biologia Applicata, Dipartimento di Scienze Farmacologiche e Biomolecolari, Dipartimento di Eccellenza 2018-2022, Università degli Studi di Milano, Milan, Italy
| | - Maria Elena Cicardi
- Laboratorio di Biologia Applicata, Dipartimento di Scienze Farmacologiche e Biomolecolari, Dipartimento di Eccellenza 2018-2022, Università degli Studi di Milano, Milan, Italy.,Department of Neuroscience, Jefferson Weinberg ALS Center, Vickie and Jack Farber Institute for Neuroscience, Sidney Kimmel Medical College, Thomas Jefferson University, Philadelphia, PA, United States
| | - Barbara Tedesco
- Laboratorio di Biologia Applicata, Dipartimento di Scienze Farmacologiche e Biomolecolari, Dipartimento di Eccellenza 2018-2022, Università degli Studi di Milano, Milan, Italy
| | - Veronica Ferrari
- Laboratorio di Biologia Applicata, Dipartimento di Scienze Farmacologiche e Biomolecolari, Dipartimento di Eccellenza 2018-2022, Università degli Studi di Milano, Milan, Italy
| | - Marta Chierichetti
- Laboratorio di Biologia Applicata, Dipartimento di Scienze Farmacologiche e Biomolecolari, Dipartimento di Eccellenza 2018-2022, Università degli Studi di Milano, Milan, Italy
| | - Elena Casarotto
- Laboratorio di Biologia Applicata, Dipartimento di Scienze Farmacologiche e Biomolecolari, Dipartimento di Eccellenza 2018-2022, Università degli Studi di Milano, Milan, Italy
| | - Margherita Piccolella
- Laboratorio di Biologia Applicata, Dipartimento di Scienze Farmacologiche e Biomolecolari, Dipartimento di Eccellenza 2018-2022, Università degli Studi di Milano, Milan, Italy
| | - Elio Messi
- Laboratorio di Biologia Applicata, Dipartimento di Scienze Farmacologiche e Biomolecolari, Dipartimento di Eccellenza 2018-2022, Università degli Studi di Milano, Milan, Italy
| | - Mariarita Galbiati
- Laboratorio di Biologia Applicata, Dipartimento di Scienze Farmacologiche e Biomolecolari, Dipartimento di Eccellenza 2018-2022, Università degli Studi di Milano, Milan, Italy
| | - Paola Rusmini
- Laboratorio di Biologia Applicata, Dipartimento di Scienze Farmacologiche e Biomolecolari, Dipartimento di Eccellenza 2018-2022, Università degli Studi di Milano, Milan, Italy
| | - Angelo Poletti
- Laboratorio di Biologia Applicata, Dipartimento di Scienze Farmacologiche e Biomolecolari, Dipartimento di Eccellenza 2018-2022, Università degli Studi di Milano, Milan, Italy.,Center of Excellence on Neurodegenerative Diseases (CEND), Università degli Studi di Milano, Milan, Italy
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12
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At the Crossroads of Apoptosis and Autophagy: Multiple Roles of the Co-Chaperone BAG3 in Stress and Therapy Resistance of Cancer. Cells 2020; 9:cells9030574. [PMID: 32121220 PMCID: PMC7140512 DOI: 10.3390/cells9030574] [Citation(s) in RCA: 37] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2020] [Revised: 02/19/2020] [Accepted: 02/25/2020] [Indexed: 12/22/2022] Open
Abstract
BAG3, a multifunctional HSP70 co-chaperone and anti-apoptotic protein that interacts with the ATPase domain of HSP70 through its C-terminal BAG domain plays a key physiological role in cellular proteostasis. The HSP70/BAG3 complex determines the levels of a large number of selective client proteins by regulating their turnover via the two major protein degradation pathways, i.e. proteasomal degradation and macroautophagy. On the one hand, BAG3 competes with BAG1 for binding to HSP70, thereby preventing the proteasomal degradation of its client proteins. By functionally interacting with HSP70 and LC3, BAG3 also delivers polyubiquitinated proteins to the autophagy pathway. BAG3 exerts a number of key physiological functions, including an involvement in cellular stress responses, proteostasis, cell death regulation, development, and cytoskeletal dynamics. Conversely, aberrant BAG3 function/expression has pathophysiological relevance correlated to cardiomyopathies, neurodegeneration, and cancer. Evidence obtained in recent years underscores the fact that BAG3 drives several key hallmarks of cancer, including cell adhesion, metastasis, angiogenesis, enhanced autophagic activity, and apoptosis inhibition. This review provides a state-of-the-art overview on the role of BAG3 in stress and therapy resistance of cancer, with a particular focus on BAG3-dependent modulation of apoptotic signaling and autophagic/lysosomal activity.
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13
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Roperto S, Russo V, De Falco F, Urraro C, Maiolino P, Del Piero F, Roperto F. Bovine papillomavirus E5 oncoprotein expression and its association with an interactor network in aggresome-autophagy pathway. Vet Microbiol 2019; 233:39-46. [PMID: 31176410 DOI: 10.1016/j.vetmic.2019.04.021] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2019] [Revised: 04/11/2019] [Accepted: 04/12/2019] [Indexed: 02/02/2023]
Abstract
E5 protein, the major oncoprotein of bovine Deltapapillomavirus (BPV), was found to be expressed in 18 of 21 examined urothelial cancers of cattle. E5 oncoprotein was found to interact with p62 which was degraded through the autophagosome-lysosome pathway as well as LC3-II and appeared to be involved in the phosphorylation of the α-subunit of eukaryotic initiation factor 2 (eIF2α). Autophagy was morphologically documented by transmission electron microscope (TEM) through the detection of double-membrane autophagosomes and autolysosomes. Overexpression of Bag3 known to mediate selective autophagy was also demonstrated. Furthermore, Bag3 and BPV E5 oncoprotein were seen to co-localize with dynein and 14-3-3γ, which suggested that Bag3 could be involved in inducing the retrograde transport of BPV E5 along microtubules to aggresomes, perinuclear sites with high autophagic flux. Electron dense perinuclear structures consistent with aggresomes were also documented by TEM in urothelial cancer cells. Finally, Bag3 was found to also interact with synaptopodin 2 (Synpo2), which would seem to contribute to cargo degradation as it has been shown to facilitate autophagosome formation. This study provides mechanistic insights into the potential role(s) of autophagy in BPV disease, which can help to develop future treatment and control measures for BPV infection. Activation of autophagy correlates positively with BPV infection and may play a role in biological behavior of bladder cancer as urothelial carcinomas of cattle are known to be characterized by a relatively low rate of metastasis.
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Affiliation(s)
- Sante Roperto
- Dipartimento di Medicina Veterinaria e Produzioni Animali, Università di Napoli Federico II, Napoli, Italy.
| | - Valeria Russo
- Dipartimento di Medicina Veterinaria e Produzioni Animali, Università di Napoli Federico II, Napoli, Italy
| | - Francesca De Falco
- Dipartimento di Medicina Veterinaria e Produzioni Animali, Università di Napoli Federico II, Napoli, Italy
| | - Chiara Urraro
- Dipartimento di Medicina Veterinaria e Produzioni Animali, Università di Napoli Federico II, Napoli, Italy
| | - Paola Maiolino
- Dipartimento di Medicina Veterinaria e Produzioni Animali, Università di Napoli Federico II, Napoli, Italy
| | - Fabio Del Piero
- Department of Pathobiological Sciences, School of Veterinary Medicine, Louisiana State University, USA
| | - Franco Roperto
- Dipartimento di Biologia, Università di Napoli Federico II, Napoli, Italy
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14
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Zhao S, Wang JM, Yan J, Zhang DL, Liu BQ, Jiang JY, Li C, Li S, Meng XN, Wang HQ. BAG3 promotes autophagy and glutaminolysis via stabilizing glutaminase. Cell Death Dis 2019; 10:284. [PMID: 30910998 PMCID: PMC6433946 DOI: 10.1038/s41419-019-1504-6] [Citation(s) in RCA: 33] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2018] [Accepted: 03/04/2019] [Indexed: 12/12/2022]
Abstract
Bcl-2 associated athanogene 3 (BAG3) is an important molecule that maintains oncogenic features of cancer cells via diverse mechanisms. One of the important functions assigned to BAG3 is implicated in selective macroautophagy/autophagy, which attracts much attention recently. However, the mechanism underlying regulation of autophagy by BAG3 has not been well defined. Here, we describe that BAG3 enhances autophagy via promotion of glutamine consumption and glutaminolysis. Glutaminolysis initiates with deamination of glutamine by glutaminase (GLS), by which yields glutamate and ammonia in mitochondria. The current study demonstrates that BAG3 stabilizes GLS via prohibition its interaction with SIRT5, thereby hindering its desuccinylation at Lys158 and Lys164 sites. As an underlying molecular mechanism, we demonstrate that BAG3 interacts with GLS and decreases SIRT5 expression. The current study also demonstrates that occupation by succinyl at Lys158 and Lys164 sites prohibits its Lys48-linked ubiquitination, thereby preventing its subsequent proteasomal degradation. Collectively, the current study demonstrates that BAG3 enhances autophagy via stabilizing GLS and promoting glutaminolysis. For the first time, this study reports that succinylation competes with ubiquitination to regulate proteasomal GLS degradation.
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Affiliation(s)
- Song Zhao
- Department of Biochemistry & Molecular Biology, China Medical University, Shenyang, 110026, China.,Key Laboratory of Cell Biology, Ministry of Public Health, and Key Laboratory of Medical Cell Biology, Ministry of Education, China Medical University, Shenyang, 110026, China.,Institute of Life Sciences, Jinzhou Medical University, Jinzhou, 121001, China
| | - Jia-Mei Wang
- Department of Biochemistry & Molecular Biology, China Medical University, Shenyang, 110026, China
| | - Jing Yan
- Department of Biochemistry & Molecular Biology, China Medical University, Shenyang, 110026, China
| | - Da-Lin Zhang
- Department of Thyroid Surgery, The 1st Affiliated Hospital, China Medical University, Shenyang, 110001, China
| | - Bao-Qin Liu
- Department of Biochemistry & Molecular Biology, China Medical University, Shenyang, 110026, China
| | - Jing-Yi Jiang
- Department of Biochemistry & Molecular Biology, China Medical University, Shenyang, 110026, China
| | - Chao Li
- Department of Biochemistry & Molecular Biology, China Medical University, Shenyang, 110026, China
| | - Si Li
- Department of Biochemistry & Molecular Biology, China Medical University, Shenyang, 110026, China
| | - Xiao-Na Meng
- Department of Biochemistry & Molecular Biology, China Medical University, Shenyang, 110026, China
| | - Hua-Qin Wang
- Department of Biochemistry & Molecular Biology, China Medical University, Shenyang, 110026, China. .,Key Laboratory of Cell Biology, Ministry of Public Health, and Key Laboratory of Medical Cell Biology, Ministry of Education, China Medical University, Shenyang, 110026, China.
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15
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Lamin B is a target for selective nuclear PQC by BAG3: implication for nuclear envelopathies. Cell Death Dis 2019; 10:23. [PMID: 30631036 PMCID: PMC6328609 DOI: 10.1038/s41419-018-1255-9] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2018] [Revised: 11/12/2018] [Accepted: 11/14/2018] [Indexed: 11/29/2022]
Abstract
Nuclear envelopathies are recognized genetic disorders affecting individuals with mutations in their genes encoding members of the lamin family of nuclear envelope proteins that are responsible for maintaining the architectural structure of the nucleus. Irregularity in shape and size of the nuclei, nuclear membrane rupture, and appearance of micronuclei in the cytoplasm are among the pathological features of the syndrome. Here, we demonstrate that Bcl2-associated anthanogene-3 (BAG3), a stress-induced co-chaperone protein that by association with heat-shock protein 70 (HSP70) participates in regulation of autophagy, plays a critical role in the integrity of the nuclear membrane in cardiomyocytes. Cells subjected to proteotoxic stress or BAG3 downregulation show perinuclear accumulation of the aberrant ubiquitinated proteins that are often associated with the appearance of misshapen, enlarged, and elongated nuclei. There were dense accumulations of lamin B in the perinuclear area and distribution of lamin B-positive micronuclei in the cytoplasmic space, indicative of nuclear envelope rupture. Overexpression of BAG3 in cells under proteotoxic stress ameliorated pathological nuclear morphology and reduced cytoplasmic distribution of the micronuclei particles. Subcellular co-localization and co-immunoprecipitation demonstrated interaction of lamin B with the BAG domain of BAG3 and HSP70, suggesting the importance of BAG3 in the selective clearance of a surplus of aggregated lamin B that is generated during stress conditions. Our findings define a novel role for BAG3 in nuclear protein quality control and suggest an alternative pathogenetic pathway that contributes to the development of nuclear envelopathies.
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16
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Keenan J, O'Sullivan F, Henry M, Breen L, Doolan P, Sinkunaite I, Meleady P, Clynes M, Horgan K, Murphy R. Acute exposure to organic and inorganic sources of copper: Differential response in intestinal cell lines. Food Sci Nutr 2018; 6:2499-2514. [PMID: 30510751 PMCID: PMC6261202 DOI: 10.1002/fsn3.857] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2018] [Revised: 09/14/2018] [Accepted: 09/21/2018] [Indexed: 12/11/2022] Open
Abstract
SCOPE Copper supplementation in nutrition has evolved from using inorganic mineral salts to organically chelated minerals but with limited knowledge of the impact at the cellular level. METHODS Here, the impact of inorganic and organic nutrient forms (glycinate, organic acid, and proteinate) of copper on the cellular level is investigated on intestinal cell lines, HT29 and Caco-2, after a 2-hr acute exposure to copper compounds and following a 10-hr recovery. RESULTS Following the 10-hr recovery, increases were observed in proteins involved in metal binding (metallothioneins) and antioxidant response (sulfiredoxin 1 and heme oxygenase 1), and global proteomic analysis suggested recruitment of the unfolded protein response and proteosomal overloading. Copper organic acid chelate, the only treatment to show striking and sustained reactive oxygen species generation, had the greatest impact on ubiquitinated proteins, reduced autophagy, and increased aggresome formation, reducing growth in both cell lines. The least effect was noted in copper proteinate with negligible impact on aggresome formation or extended growth for either cell line. CONCLUSION The type and source of copper can impact significantly at the cellular level.
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Affiliation(s)
- Joanne Keenan
- National Institute for Cellular BiotechnologyDublin City UniversityDublinIreland
| | - Finbarr O'Sullivan
- National Institute for Cellular BiotechnologyDublin City UniversityDublinIreland
| | - Michael Henry
- National Institute for Cellular BiotechnologyDublin City UniversityDublinIreland
| | - Laura Breen
- National Institute for Cellular BiotechnologyDublin City UniversityDublinIreland
| | - Padraig Doolan
- National Institute for Cellular BiotechnologyDublin City UniversityDublinIreland
| | | | - Paula Meleady
- National Institute for Cellular BiotechnologyDublin City UniversityDublinIreland
| | - Martin Clynes
- National Institute for Cellular BiotechnologyDublin City UniversityDublinIreland
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17
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Sannino S, Guerriero CJ, Sabnis AJ, Stolz DB, Wallace CT, Wipf P, Watkins SC, Bivona TG, Brodsky JL. Compensatory increases of select proteostasis networks after Hsp70 inhibition in cancer cells. J Cell Sci 2018; 131:jcs.217760. [PMID: 30131440 DOI: 10.1242/jcs.217760] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2018] [Accepted: 08/02/2018] [Indexed: 12/13/2022] Open
Abstract
Cancer cells thrive when challenged with proteotoxic stress by inducing components of the protein folding, proteasome, autophagy and unfolded protein response (UPR) pathways. Consequently, specific molecular chaperones have been validated as targets for anti-cancer therapies. For example, inhibition of Hsp70 family proteins (hereafter Hsp70) in rhabdomyosarcoma triggers UPR induction and apoptosis. To define how these cancer cells respond to compromised proteostasis, we compared rhabdomyosarcoma cells that were sensitive (RMS13) or resistant (RMS13-R) to the Hsp70 inhibitor MAL3-101. We discovered that endoplasmic reticulum-associated degradation (ERAD) and autophagy were activated in RMS13-R cells, suggesting that resistant cells overcome Hsp70 ablation by increasing misfolded protein degradation. Indeed, RMS13-R cells degraded ERAD substrates more rapidly than RMS cells and induced the autophagy pathway. Surprisingly, inhibition of the proteasome or ERAD had no effect on RMS13-R cell survival, but silencing of select autophagy components or treatment with autophagy inhibitors restored MAL3-101 sensitivity and led to apoptosis. These data indicate a route through which cancer cells overcome a chaperone-based therapy, define how cells can adapt to Hsp70 inhibition, and demonstrate the value of combined chaperone and autophagy-based therapies.This article has an associated First Person interview with the first author of the paper.
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Affiliation(s)
- Sara Sannino
- Department of Biological Sciences, University of Pittsburgh, Pittsburgh, PA 15260, USA
| | | | - Amit J Sabnis
- Department of Pediatrics, University of California, San Francisco, CA 94143, USA.,Helen Diller Family Comprehensive Cancer Center, University of California, San Francisco, CA 94143, USA
| | - Donna Beer Stolz
- Department of Medicine, University of California, San Francisco, CA 94143, USA
| | - Callen T Wallace
- Department of Medicine, University of California, San Francisco, CA 94143, USA
| | - Peter Wipf
- Department of Cell Biology, University of Pittsburgh, Pittsburgh, PA 15261, USA
| | - Simon C Watkins
- Department of Medicine, University of California, San Francisco, CA 94143, USA
| | - Trever G Bivona
- Helen Diller Family Comprehensive Cancer Center, University of California, San Francisco, CA 94143, USA.,Department of Chemistry, University of Pittsburgh, Pittsburgh, PA 15260, USA
| | - Jeffrey L Brodsky
- Department of Biological Sciences, University of Pittsburgh, Pittsburgh, PA 15260, USA
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18
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Roperto S, Russo V, Rosati A, Ceccarelli DM, Munday JS, Turco MC, Roperto F. Chaperone-assisted selective autophagy in healthy and papillomavirus-associated neoplastic urothelium of cattle. Vet Microbiol 2018; 221:134-142. [PMID: 29981700 DOI: 10.1016/j.vetmic.2018.06.013] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2018] [Revised: 06/13/2018] [Accepted: 06/16/2018] [Indexed: 12/15/2022]
Abstract
Chaperone-assisted selective autophagy (CASA) is a newly-described selective tension-induced macroautophagy pathway mediated by Bag3 that is believed to be essential for mechanotransduction in skeletal muscle and to be an important regulator of the immune system. We investigated CASA machinery both in healthy and in fifteen papillomavirus-associated neoplastic bovine urothelium. The components of CASA complex, that comprises the molecular chaperones HspA8/Hsc70 and Hsp8B/Hsp22 and the cochaperones Bag3 and STUB1/CHIP, were studied by molecular, microscopic and submicroscopic investigations. CASA complex was found to be constitutively expressed in healthy bovine urothelium; its expression increased in urothelial cancers of cattle, namely thirteen papillary carcinomas and two papillary urothelial neoplasm of low malignant potential (PUNLMPs). We suggest that basal levels of CASA are important in the healthy urothelium which interfaces with the community of urinary microbiota thus representing an important epithelial cell-autonomous mechanism of antibacterial defense. Co-immunoprecipitation studies using an antibody against bovine papillomavirus E5 protein revealed that the oncoprotein co-localized with CASA complex in urothelial cancer cells. This suggests that infection by BPV E5 could influence cell behaviour by interfering with basal autophagy processes although this study did not conclusively show that this interaction increased the expression of CASA proteins. In neoplastic urothelium, CASA could be involved in regulating fundamental cellular processes such adhesion, migration, and proliferation and so might influence the biological behaviour of urothelial tumors in cattle.
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Affiliation(s)
- Sante Roperto
- Dipartimento di Medicina Veterinaria e Produzioni Animali, Università di Napoli Federico II, Napoli, Italy.
| | - Valeria Russo
- Dipartimento di Medicina Veterinaria e Produzioni Animali, Università di Napoli Federico II, Napoli, Italy
| | - Alessandra Rosati
- Dipartimento di Medicina Chirurgia ed Odontoiatria, Schola Medica Salernitana, Università di Salerno, Baronissi, Italy
| | - Dora M Ceccarelli
- Dipartimento di Medicina Veterinaria e Produzioni Animali, Università di Napoli Federico II, Napoli, Italy
| | - John S Munday
- Pathobiology, School of Veterinary Sciences, Massey University, Palmerston North, New Zealand
| | - Maria C Turco
- Dipartimento di Medicina Chirurgia ed Odontoiatria, Schola Medica Salernitana, Università di Salerno, Baronissi, Italy
| | - Franco Roperto
- Dipartimento di Biologia, Università di Napoli Federico II, Napoli, Italy
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19
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Nillegoda NB, Wentink AS, Bukau B. Protein Disaggregation in Multicellular Organisms. Trends Biochem Sci 2018; 43:285-300. [PMID: 29501325 DOI: 10.1016/j.tibs.2018.02.003] [Citation(s) in RCA: 79] [Impact Index Per Article: 13.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2017] [Revised: 01/29/2018] [Accepted: 02/01/2018] [Indexed: 12/13/2022]
Abstract
Protein aggregates are formed in cells with profoundly perturbed proteostasis, where the generation of misfolded proteins exceeds the cellular refolding and degradative capacity. They are a hallmark of protein conformational disorders and aged and/or environmentally stressed cells. Protein aggregation is a reversible process in vivo, which counteracts proteotoxicities derived from aggregate persistence, but the chaperone machineries involved in protein disaggregation in Metazoa were uncovered only recently. Here we highlight recent advances in the mechanistic understanding of the major protein disaggregation machinery mediated by the Hsp70 chaperone system and discuss emerging alternative disaggregation activities in multicellular organisms.
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Affiliation(s)
- Nadinath B Nillegoda
- Center for Molecular Biology of Heidelberg University (ZMBH), Im Neuenheimer Feld 282, 69120 Heidelberg, Germany; German Cancer Research Center (DKFZ), DKFZ-ZMBH Alliance, Heidelberg, Germany.
| | - Anne S Wentink
- Center for Molecular Biology of Heidelberg University (ZMBH), Im Neuenheimer Feld 282, 69120 Heidelberg, Germany
| | - Bernd Bukau
- Center for Molecular Biology of Heidelberg University (ZMBH), Im Neuenheimer Feld 282, 69120 Heidelberg, Germany; German Cancer Research Center (DKFZ), DKFZ-ZMBH Alliance, Heidelberg, Germany.
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20
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Tang M, Ji C, Pallo S, Rahman I, Johnson GVW. Nrf2 mediates the expression of BAG3 and autophagy cargo adaptor proteins and tau clearance in an age-dependent manner. Neurobiol Aging 2017; 63:128-139. [PMID: 29304346 DOI: 10.1016/j.neurobiolaging.2017.12.001] [Citation(s) in RCA: 39] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2017] [Revised: 11/07/2017] [Accepted: 12/01/2017] [Indexed: 11/25/2022]
Abstract
During aging, decreased efficiency of nuclear factor (erythroid-derived 2)-like 2 (Nrf2) activation and autophagic processes in the brain may be a contributing factor in the pathogenesis of neurodegenerative diseases such as Alzheimer's disease. Therefore, we analyzed the expression of Bcl-2-associated athanogene 3, a cochaperone that mediates autophagy, and the autophagy adaptors NBR1, NDP52, and sequestosome 1/p62 in the brains of 4-, 8-, and 12-month-old wild-type and Nrf2 knockout (-/-) mice. We also analyzed the levels of total tau and phospho-tau species. There were minimal differences in the expression of autophagy-related genes or tau species in 4-month-old animals; however, by 12 months, all of these autophagy-associated genes were expressed at significantly lower levels in the Nrf2 (-/-) mice. The decreases in the autophagy-associated genes were accompanied by significantly elevated levels of phospho-tau species in the 12-month-old Nrf2 (-/-) brains. These findings indicate that Nrf2 regulation of autophagy-related genes likely plays a greater role in mediating the clearance of tau as an organism ages.
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Affiliation(s)
- Maoping Tang
- Department of Anesthesiology, University of Rochester Medical Center, University of Rochester, Rochester, NY, USA
| | - Changyi Ji
- Department of Anesthesiology, University of Rochester Medical Center, University of Rochester, Rochester, NY, USA
| | - Susanne Pallo
- Department of Anesthesiology, University of Rochester Medical Center, University of Rochester, Rochester, NY, USA
| | - Irfan Rahman
- Department of Environmental Medicine, Lung Biology and Disease Program, University of Rochester Medical Center, University of Rochester, Rochester, NY, USA
| | - Gail V W Johnson
- Department of Anesthesiology, University of Rochester Medical Center, University of Rochester, Rochester, NY, USA.
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21
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Cao YL, Yang YP, Mao CJ, Zhang XQ, Wang CT, Yang J, Lv DJ, Wang F, Hu LF, Liu CF. A role of BAG3 in regulating SNCA/α-synuclein clearance via selective macroautophagy. Neurobiol Aging 2017; 60:104-115. [DOI: 10.1016/j.neurobiolaging.2017.08.023] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2016] [Revised: 06/13/2017] [Accepted: 08/23/2017] [Indexed: 12/29/2022]
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22
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Judge LM, Perez-Bermejo JA, Truong A, Ribeiro AJ, Yoo JC, Jensen CL, Mandegar MA, Huebsch N, Kaake RM, So PL, Srivastava D, Pruitt BL, Krogan NJ, Conklin BR. A BAG3 chaperone complex maintains cardiomyocyte function during proteotoxic stress. JCI Insight 2017; 2:94623. [PMID: 28724793 DOI: 10.1172/jci.insight.94623] [Citation(s) in RCA: 65] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2017] [Accepted: 06/13/2017] [Indexed: 12/13/2022] Open
Abstract
Molecular chaperones regulate quality control in the human proteome, pathways that have been implicated in many diseases, including heart failure. Mutations in the BAG3 gene, which encodes a co-chaperone protein, have been associated with heart failure due to both inherited and sporadic dilated cardiomyopathy. Familial BAG3 mutations are autosomal dominant and frequently cause truncation of the coding sequence, suggesting a heterozygous loss-of-function mechanism. However, heterozygous knockout of the murine BAG3 gene did not cause a detectable phenotype. To model BAG3 cardiomyopathy in a human system, we generated an isogenic series of human induced pluripotent stem cells (iPSCs) with loss-of-function mutations in BAG3. Heterozygous BAG3 mutations reduced protein expression, disrupted myofibril structure, and compromised contractile function in iPSC-derived cardiomyocytes (iPS-CMs). BAG3-deficient iPS-CMs were particularly sensitive to further myofibril disruption and contractile dysfunction upon exposure to proteasome inhibitors known to cause cardiotoxicity. We performed affinity tagging of the endogenous BAG3 protein and mass spectrometry proteomics to further define the cardioprotective chaperone complex that BAG3 coordinates in the human heart. Our results establish a model for evaluating protein quality control pathways in human cardiomyocytes and their potential as therapeutic targets and susceptibility factors for cardiac drug toxicity.
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Affiliation(s)
- Luke M Judge
- Department of Pediatrics, UCSF, San Francisco, California, USA.,Gladstone Institutes, San Francisco, California, USA
| | - Juan A Perez-Bermejo
- Gladstone Institutes, San Francisco, California, USA.,Department of Cellular and Molecular Pharmacology, UCSF, San Francisco, California, USA
| | - Annie Truong
- Gladstone Institutes, San Francisco, California, USA
| | - Alexandre Js Ribeiro
- Gladstone Institutes, San Francisco, California, USA.,Stanford Cardiovascular Institute and Mechanical Engineering Department, and
| | - Jennie C Yoo
- Gladstone Institutes, San Francisco, California, USA
| | | | | | | | - Robyn M Kaake
- Gladstone Institutes, San Francisco, California, USA
| | - Po-Lin So
- Gladstone Institutes, San Francisco, California, USA
| | - Deepak Srivastava
- Department of Pediatrics, UCSF, San Francisco, California, USA.,Gladstone Institutes, San Francisco, California, USA
| | - Beth L Pruitt
- Stanford Cardiovascular Institute and Mechanical Engineering Department, and.,Bioengineering and Molecular and Cellular Physiology Departments, Stanford University, Stanford, California, USA
| | - Nevan J Krogan
- Gladstone Institutes, San Francisco, California, USA.,Department of Cellular and Molecular Pharmacology, UCSF, San Francisco, California, USA
| | - Bruce R Conklin
- Gladstone Institutes, San Francisco, California, USA.,Department of Medicine, UCSF, San Francisco, California, USA
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23
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Rusmini P, Cristofani R, Galbiati M, Cicardi ME, Meroni M, Ferrari V, Vezzoli G, Tedesco B, Messi E, Piccolella M, Carra S, Crippa V, Poletti A. The Role of the Heat Shock Protein B8 (HSPB8) in Motoneuron Diseases. Front Mol Neurosci 2017; 10:176. [PMID: 28680390 PMCID: PMC5478700 DOI: 10.3389/fnmol.2017.00176] [Citation(s) in RCA: 46] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2017] [Accepted: 05/18/2017] [Indexed: 12/13/2022] Open
Abstract
Amyotrophic lateral sclerosis (ALS) and spinal and bulbar muscular atrophy (SBMA) are two motoneuron diseases (MNDs) characterized by aberrant protein behavior in affected cells. In familial ALS (fALS) and in SBMA specific gene mutations lead to the production of neurotoxic proteins or peptides prone to misfold, which then accumulate in form of aggregates. Notably, some of these proteins accumulate into aggregates also in sporadic ALS (sALS) even if not mutated. To prevent proteotoxic stresses detrimental to cells, misfolded and/or aggregated proteins must be rapidly removed by the protein quality control (PQC) system. The small heat shock protein B8 (HSPB8) is a chaperone induced by harmful events, like proteasome inhibition. HSPB8 is expressed both in motoneuron and muscle cells, which are both targets of misfolded protein toxicity in MNDs. In ALS mice models, in presence of the mutant proteins, HSPB8 is upregulated both in spinal cord and muscle. HSPB8 interacts with the HSP70 co-chaperone BAG3 and enhances the degradation of misfolded proteins linked to sALS, or causative of fALS and of SBMA. HSPB8 acts by facilitating autophagy, thereby preventing misfolded protein accumulation in affected cells. BAG3 and BAG1 compete for HSP70-bound clients and target them for disposal to the autophagy or proteasome, respectively. Enhancing the selective targeting of misfolded proteins by HSPB8-BAG3-HSP70 to autophagy may also decrease their delivery to the proteasome by the BAG1-HSP70 complex, thereby limiting possible proteasome overwhelming. Thus, approaches aimed at potentiating HSPB8-BAG3 may contribute to the maintenance of proteostasis and may delay MNDs progression.
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Affiliation(s)
- Paola Rusmini
- Dipartimento di Scienze Farmacologiche e Biomolecolari (DiSFeB), Centro di Eccellenza sulle Malattie Neurodegenerative, Università degli Studi di MilanoMilano, Italy
| | - Riccardo Cristofani
- Dipartimento di Scienze Farmacologiche e Biomolecolari (DiSFeB), Centro di Eccellenza sulle Malattie Neurodegenerative, Università degli Studi di MilanoMilano, Italy
| | - Mariarita Galbiati
- Dipartimento di Scienze Farmacologiche e Biomolecolari (DiSFeB), Centro di Eccellenza sulle Malattie Neurodegenerative, Università degli Studi di MilanoMilano, Italy
| | - Maria E Cicardi
- Dipartimento di Scienze Farmacologiche e Biomolecolari (DiSFeB), Centro di Eccellenza sulle Malattie Neurodegenerative, Università degli Studi di MilanoMilano, Italy
| | - Marco Meroni
- Dipartimento di Scienze Farmacologiche e Biomolecolari (DiSFeB), Centro di Eccellenza sulle Malattie Neurodegenerative, Università degli Studi di MilanoMilano, Italy
| | - Veronica Ferrari
- Dipartimento di Scienze Farmacologiche e Biomolecolari (DiSFeB), Centro di Eccellenza sulle Malattie Neurodegenerative, Università degli Studi di MilanoMilano, Italy
| | - Giulia Vezzoli
- Dipartimento di Scienze Farmacologiche e Biomolecolari (DiSFeB), Centro di Eccellenza sulle Malattie Neurodegenerative, Università degli Studi di MilanoMilano, Italy
| | - Barbara Tedesco
- Dipartimento di Scienze Farmacologiche e Biomolecolari (DiSFeB), Centro di Eccellenza sulle Malattie Neurodegenerative, Università degli Studi di MilanoMilano, Italy
| | - Elio Messi
- Dipartimento di Scienze Farmacologiche e Biomolecolari (DiSFeB), Centro di Eccellenza sulle Malattie Neurodegenerative, Università degli Studi di MilanoMilano, Italy
| | - Margherita Piccolella
- Dipartimento di Scienze Farmacologiche e Biomolecolari (DiSFeB), Centro di Eccellenza sulle Malattie Neurodegenerative, Università degli Studi di MilanoMilano, Italy
| | - Serena Carra
- Dipartimento di Scienze Biomediche, Metaboliche e Neuroscienze, Università di Modena e Reggio EmiliaModena, Italy
| | - Valeria Crippa
- Dipartimento di Scienze Farmacologiche e Biomolecolari (DiSFeB), Centro di Eccellenza sulle Malattie Neurodegenerative, Università degli Studi di MilanoMilano, Italy.,C. Mondino National Neurological InstitutePavia, Italy
| | - Angelo Poletti
- Dipartimento di Scienze Farmacologiche e Biomolecolari (DiSFeB), Centro di Eccellenza sulle Malattie Neurodegenerative, Università degli Studi di MilanoMilano, Italy.,Centro Interuniversitario sulle Malattie Neurodegenerative, Università degli Studi di Firenze, Roma Tor VergataMilano, Italy
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24
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Abstract
Autophagy and the ubiquitin-proteasome system are the two major quality control pathways responsible for cellular homeostasis. As such, they provide protection against age-associated changes and a plethora of human diseases. Ubiquitination is utilized as a degradation signal by both systems, albeit in different ways, to mark cargoes for proteasomal and lysosomal degradation. Both systems intersect and communicate at multiple points to coordinate their actions in proteostasis and organelle homeostasis. This review summarizes molecular details of how proteasome and autophagy pathways are functionally interconnected in cells and indicates common principles and nodes of communication that can be therapeutically exploited.
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Affiliation(s)
- Ivan Dikic
- Institute of Biochemistry II, School of Medicine, Goethe University, 60598 Frankfurt am Main, Germany; .,Buchmann Institute for Molecular Life Sciences, Goethe University, 60438 Frankfurt am Main, Germany
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25
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Autophagy as a potential target for sarcoma treatment. Biochim Biophys Acta Rev Cancer 2017; 1868:40-50. [PMID: 28242349 DOI: 10.1016/j.bbcan.2017.02.004] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2016] [Revised: 02/23/2017] [Accepted: 02/23/2017] [Indexed: 02/05/2023]
Abstract
Autophagy is a constitutively active, evolutionary conserved, catabolic process for maintaining homeostasis in cellular stress responses and cell survival. Although its mechanism has not been fully illustrated, recent work on autophagy in various types of sarcomas has demonstrated that autophagy exerts an important role in sarcoma cell growth and proliferation, in pro-survival response to therapies and stresses, and in therapeutic resistance of sarcoma. Thus, the autophagic process is being seen as a possibly novel therapeutic target of sarcoma. Additionally, some co-regulators of autophagy have also been investigated as promising biomarkers for the diagnosis and prognosis of sarcoma. In this review, we summarize contemporary advances in the role of autophagy in sarcoma and discuss the potential of autophagy as a new target for sarcoma treatment.
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26
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Antonietti P, Linder B, Hehlgans S, Mildenberger IC, Burger MC, Fulda S, Steinbach JP, Gessler F, Rödel F, Mittelbronn M, Kögel D. Interference with the HSF1/HSP70/BAG3 Pathway Primes Glioma Cells to Matrix Detachment and BH3 Mimetic-Induced Apoptosis. Mol Cancer Ther 2016; 16:156-168. [PMID: 27777286 DOI: 10.1158/1535-7163.mct-16-0262] [Citation(s) in RCA: 57] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2016] [Revised: 09/14/2016] [Accepted: 09/28/2016] [Indexed: 11/16/2022]
Abstract
Malignant gliomas exhibit a high intrinsic resistance against stimuli triggering apoptotic cell death. HSF1 acts as transcription factor upstream of HSP70 and the HSP70 co-chaperone BAG3 that is overexpressed in glioblastoma. To specifically target this resistance mechanism, we applied the selective HSF1 inhibitor KRIBB11 and the HSP70/BAG3 interaction inhibitor YM-1 in combination with the pan-Bcl-2 inhibitor AT-101. Here, we demonstrate that lentiviral BAG3 silencing significantly enhances AT-101-induced cell death and reactivates effector caspase-mediated apoptosis in U251 glioma cells with high BAG3 expression, whereas these sensitizing effects were less pronounced in U343 cells expressing lower BAG3 levels. KRIBB11 decreased protein levels of HSP70, BAG3, and the antiapoptotic Bcl-2 protein Mcl-1, and both KRIBB11 and YM-1 elicited significantly increased mitochondrial dysfunction, effector caspase activity, and apoptotic cell death after combined treatment with AT-101 and ABT-737. Depletion of BAG3 also led to a pronounced loss of cell-matrix adhesion, FAK phosphorylation, and in vivo tumor growth in an orthotopic mouse glioma model. Furthermore, it reduced the plating efficiency of U251 cells in three-dimensional clonogenic assays and limited clonogenic survival after short-term treatment with AT-101. Collectively, our data suggest that the HSF1/HSP70/BAG3 pathway plays a pivotal role for overexpression of prosurvival Bcl-2 proteins and cell death resistance of glioma. They also support the hypothesis that interference with BAG3 function is an effective novel approach to prime glioma cells to anoikis. Mol Cancer Ther; 16(1); 156-68. ©2016 AACR.
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Affiliation(s)
- Patrick Antonietti
- Experimental Neurosurgery, Goethe University Hospital, Frankfurt am Main, Germany
| | - Benedikt Linder
- Experimental Neurosurgery, Goethe University Hospital, Frankfurt am Main, Germany
| | - Stephanie Hehlgans
- Radiotherapy and Oncology, Goethe University Hospital, Frankfurt am Main, Germany
| | | | | | - Simone Fulda
- Institute for Experimental Cancer Research in Pediatrics, Goethe University Hospital, Frankfurt am Main, Germany.,German Cancer Consortium (DKTK), Heidelberg, Germany.,German Cancer Research Center (DKFZ), Heidelberg, Germany
| | - Joachim P Steinbach
- Dr. Senckenberg Institute of Neurooncology.,German Cancer Consortium (DKTK), Heidelberg, Germany
| | - Florian Gessler
- Department of Neurosurgery, Goethe University Hospital, Frankfurt am Main, Germany
| | - Franz Rödel
- Radiotherapy and Oncology, Goethe University Hospital, Frankfurt am Main, Germany.,German Cancer Consortium (DKTK), Heidelberg, Germany
| | - Michel Mittelbronn
- German Cancer Consortium (DKTK), Heidelberg, Germany.,Edinger Institute, Goethe University Hospital, Frankfurt am Main, Germany
| | - Donat Kögel
- Experimental Neurosurgery, Goethe University Hospital, Frankfurt am Main, Germany. .,German Cancer Consortium (DKTK), Heidelberg, Germany
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27
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Nivon M, Fort L, Muller P, Richet E, Simon S, Guey B, Fournier M, Arrigo AP, Hetz C, Atkin JD, Kretz-Remy C. NFκB is a central regulator of protein quality control in response to protein aggregation stresses via autophagy modulation. Mol Biol Cell 2016; 27:1712-27. [PMID: 27075172 PMCID: PMC4884063 DOI: 10.1091/mbc.e15-12-0835] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2015] [Accepted: 04/05/2016] [Indexed: 12/20/2022] Open
Abstract
NFκB is a master regulator of protein quality control. It helps the cells to survive proteotoxicity by modulating autophagy via up-regulation of BAG3 and HspB8 expression, a molecular mechanism relevant to protein conformational diseases. During cell life, proteins often misfold, depending on particular mutations or environmental changes, which may lead to protein aggregates that are toxic for the cell. Such protein aggregates are the root cause of numerous diseases called “protein conformational diseases,” such as myofibrillar myopathy and familial amyotrophic lateral sclerosis. To fight against aggregates, cells are equipped with protein quality control mechanisms. Here we report that NFκB transcription factor is activated by misincorporation of amino acid analogues into proteins, inhibition of proteasomal activity, expression of the R120G mutated form of HspB5 (associated with myofibrillar myopathy), or expression of the G985R and G93A mutated forms of superoxide dismutase 1 (linked to familial amyotrophic lateral sclerosis). This noncanonical stimulation of NFκB triggers the up-regulation of BAG3 and HspB8 expression, two activators of selective autophagy, which relocalize to protein aggregates. Then NFκB-dependent autophagy allows the clearance of protein aggregates. Thus NFκB appears as a central and major regulator of protein aggregate clearance by modulating autophagic activity. In this context, the pharmacological stimulation of this quality control pathway might represent a valuable strategy for therapies against protein conformational diseases.
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Affiliation(s)
- Mathieu Nivon
- Université de Lyon, 69622 Lyon, France CNRS, UMR 5310, INSERM U1217, Institut NeuroMyoGène, Université Lyon 1, 69100 Villeurbanne, France
| | - Loïc Fort
- Université de Lyon, 69622 Lyon, France CNRS, UMR 5310, INSERM U1217, Institut NeuroMyoGène, Université Lyon 1, 69100 Villeurbanne, France
| | - Pascale Muller
- Université de Lyon, 69622 Lyon, France CNRS, UMR 5310, INSERM U1217, Institut NeuroMyoGène, Université Lyon 1, 69100 Villeurbanne, France
| | - Emma Richet
- Université de Lyon, 69622 Lyon, France CNRS, UMR 5310, INSERM U1217, Institut NeuroMyoGène, Université Lyon 1, 69100 Villeurbanne, France
| | - Stéphanie Simon
- Université de Lyon, 69622 Lyon, France CNRS, UMR 5310, INSERM U1217, Institut NeuroMyoGène, Université Lyon 1, 69100 Villeurbanne, France
| | - Baptiste Guey
- Université de Lyon, 69622 Lyon, France CNRS, UMR 5310, INSERM U1217, Institut NeuroMyoGène, Université Lyon 1, 69100 Villeurbanne, France
| | - Maëlenn Fournier
- Université de Lyon, 69622 Lyon, France CNRS, UMR 5310, INSERM U1217, Institut NeuroMyoGène, Université Lyon 1, 69100 Villeurbanne, France
| | - André-Patrick Arrigo
- Université de Lyon, 69622 Lyon, France CNRS, UMR 5310, INSERM U1217, Institut NeuroMyoGène, Université Lyon 1, 69100 Villeurbanne, France
| | - Claudio Hetz
- Biomedical Neuroscience Institute, Faculty of Medicine, University of Chile, 70086 Santiago, Chile Center for Geroscience, Brain Health and Metabolism, 70086 Santiago, Chile
| | - Julie D Atkin
- Department of Biomedical Sciences, Faculty of Medicine and Health Sciences, Macquarie University, Sydney, NSW 2109, Australia
| | - Carole Kretz-Remy
- Université de Lyon, 69622 Lyon, France CNRS, UMR 5310, INSERM U1217, Institut NeuroMyoGène, Université Lyon 1, 69100 Villeurbanne, France
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28
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BARTSCH GEORG, JENNEWEIN LUKAS, HARTER PATRICKN, ANTONIETTI PATRICK, BLAHETA ROMANA, KVASNICKA HANSMICHAEL, KÖGEL DONAT, HAFERKAMP AXEL, MITTELBRONN MICHEL, MANI JENS. Autophagy-associated proteins BAG3 and p62 in testicular cancer. Oncol Rep 2015; 35:1629-35. [DOI: 10.3892/or.2015.4505] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2015] [Accepted: 11/03/2015] [Indexed: 11/06/2022] Open
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29
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Estrogen receptor α regulates non-canonical autophagy that provides stress resistance to neuroblastoma and breast cancer cells and involves BAG3 function. Cell Death Dis 2015; 6:e1812. [PMID: 26158518 PMCID: PMC4650728 DOI: 10.1038/cddis.2015.181] [Citation(s) in RCA: 62] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2015] [Revised: 05/13/2015] [Accepted: 05/29/2015] [Indexed: 12/27/2022]
Abstract
Breast cancer is a heterogeneous disease and approximately 70% of newly diagnosed breast cancers are estrogen receptor (ER) positive. Out of the two ER types, α and β, ERα is the only ER that is detectable by immunohistochemistry in breast cancer biopsies and is the predominant subtype expressed in breast tumor tissue. ER-positive tumors are currently treated with anti-hormone therapy to inhibit ER signaling. It is well known that breast cancer cells can develop endocrine resistance and resistance to anti-hormone therapy and this can be facilitated via the autophagy pathway, but so far the description of a detailed autophagy expression profile of ER-positive cancer cells is missing. In the present study, we characterized tumor cell lines ectopically expressing ERα or ERβ as well as the breast cancer-derived MCF-7 cell line endogenously expressing ERα but being ERβ negative. We could show that ERα-expressing cells have a higher autophagic activity than cells expressing ERβ and cells lacking ER expression. Additionally, for autophagy-related gene expression we describe an ERα-specific ‘autophagy-footprint' that is fundamentally different to tumor cells expressing ERβ or lacking ER expression. This newly described ERα-mediated and estrogen response element (ERE)-independent non-canonical autophagy pathway, which involves the function of the co-chaperone Bcl2-associated athanogene 3 (BAG3), is independent of classical mammalian target of rapamycin (mTOR) and phosphatidylinositol 3 kinase (PI3K) signaling networks and provides stress resistance in our model systems. Altogether, our study uncovers a novel non-canonical autophagy pathway that might be an interesting target for personalized medicine and treatment of ERα-positive breast cancer cells that do not respond to anti-hormone therapy and classical autophagy inhibitors.
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30
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Mani J, Antonietti P, Rakel S, Blaheta R, Bartsch G, Haferkamp A, Kögel D. Knockdown of BAG3 sensitizes bladder cancer cells to treatment with the BH3 mimetic ABT-737. World J Urol 2015; 34:197-205. [DOI: 10.1007/s00345-015-1616-2] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2015] [Accepted: 06/09/2015] [Indexed: 11/24/2022] Open
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31
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HDAC Family Members Intertwined in the Regulation of Autophagy: A Druggable Vulnerability in Aggressive Tumor Entities. Cells 2015; 4:135-68. [PMID: 25915736 PMCID: PMC4493453 DOI: 10.3390/cells4020135] [Citation(s) in RCA: 60] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2015] [Revised: 04/15/2015] [Accepted: 04/15/2015] [Indexed: 12/21/2022] Open
Abstract
The exploitation of autophagy by some cancer entities to support survival and dodge death has been well-described. Though its role as a constitutive process is important in normal, healthy cells, in the milieu of malignantly transformed and highly proliferative cells, autophagy is critical for escaping metabolic and genetic stressors. In recent years, the importance of histone deacetylases (HDACs) in cancer biology has been heavily investigated, and the enzyme family has been shown to play a role in autophagy, too. HDAC inhibitors (HDACi) are being integrated into cancer therapy and clinical trials are ongoing. The effect of HDACi on autophagy and, conversely, the effect of autophagy on HDACi efficacy are currently under investigation. With the development of HDACi that are able to selectively target individual HDAC isozymes, there is great potential for specific therapy that has more well-defined effects on cancer biology and also minimizes toxicity. Here, the role of autophagy in the context of cancer and the interplay of this process with HDACs will be summarized. Identification of key HDAC isozymes involved in autophagy and the ability to target specific isozymes yields the potential to cripple and ultimately eliminate malignant cells depending on autophagy as a survival mechanism.
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32
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Rapino F, Abhari BA, Jung M, Fulda S. NIK is required for NF-κB-mediated induction of BAG3 upon inhibition of constitutive protein degradation pathways. Cell Death Dis 2015; 6:e1692. [PMID: 25766331 PMCID: PMC4385908 DOI: 10.1038/cddis.2014.584] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2014] [Revised: 11/26/2014] [Accepted: 12/17/2014] [Indexed: 02/07/2023]
Abstract
Recently, we reported that induction of the co-chaperone Bcl-2-associated athanogene 3 (BAG3) is critical for recovery of rhabdomyosarcoma (RMS) cells after proteotoxic stress upon inhibition of the two constitutive protein degradation pathways, that is, the ubiquitin-proteasome system by Bortezomib and the aggresome-autophagy system by histone deacetylase 6 (HDAC6) inhibitor ST80. In the present study, we investigated the molecular mechanisms mediating BAG3 induction under these conditions. Here, we identify nuclear factor-kappa B (NF-κB)-inducing kinase (NIK) as a key mediator of ST80/Bortezomib-stimulated NF-κB activation and transcriptional upregulation of BAG3. ST80/Bortezomib cotreatment upregulates mRNA and protein expression of NIK, which is accompanied by an initial increase in histone H3 acetylation. Importantly, NIK silencing by siRNA abolishes NF-κB activation and BAG3 induction by ST80/Bortezomib. Furthermore, ST80/Bortezomib cotreatment stimulates NF-κB transcriptional activity and upregulates NF-κB target genes. Genetic inhibition of NF-κB by overexpression of dominant-negative IκBα superrepressor (IκBα-SR) or by knockdown of p65 blocks the ST80/Bortezomib-stimulated upregulation of BAG3 mRNA and protein expression. Interestingly, inhibition of lysosomal activity by Bafilomycin A1 inhibits ST80/Bortezomib-stimulated IκBα degradation, NF-κB activation and BAG3 upregulation, indicating that IκBα is degraded via the lysosome in the presence of Bortezomib. Thus, by demonstrating a critical role of NIK in mediating NF-κB activation and BAG3 induction upon ST80/Bortezomib cotreatment, our study provides novel insights into mechanisms of resistance to proteotoxic stress in RMS.
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Affiliation(s)
- F Rapino
- Institute for Experimental Cancer Research in Pediatrics, Goethe-University, Frankfurt, Germany
| | - B A Abhari
- Institute for Experimental Cancer Research in Pediatrics, Goethe-University, Frankfurt, Germany
| | - M Jung
- Institute of Pharmaceutical Sciences, Albert-Ludwigs-University, Freiburg, Germany
- German Cancer Consortium (DKTK), Heidelberg, Germany
- German Cancer Research Center (DKFZ), Heidelberg, Germany
| | - S Fulda
- Institute for Experimental Cancer Research in Pediatrics, Goethe-University, Frankfurt, Germany
- German Cancer Consortium (DKTK), Heidelberg, Germany
- German Cancer Research Center (DKFZ), Heidelberg, Germany
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Paniagua Soriano G, De Bruin G, Overkleeft HS, Florea BI. Toward understanding induction of oxidative stress and apoptosis by proteasome inhibitors. Antioxid Redox Signal 2014; 21:2419-43. [PMID: 24437477 DOI: 10.1089/ars.2013.5794] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
SIGNIFICANCE Proteasome inhibitors (PIs) are used in the clinic for the treatment of hematopoietic malignancies. PI inhibitors induce endoplasmatic reticulum (ER) stress and oxidative stress, disruption of signaling pathways, mitochondrial dysfunction, and, eventually, cell death by apoptosis. PIs designated as clinical candidates include natural product derivatives and compounds developed by rational design and feature a wide diversity of structural elements. The vast amount of literature on this topic underscores PIs significance in driving basic research alongside therapeutic benefit. RECENT ADVANCES Research in recent years has brought an in-depth insight into the molecular mechanisms of PI-induced apoptosis. However, there are some paradoxes and controversies in the literature. In this review, the advances and uncertainties, in particular on the time course events that make cells commit to apoptosis, are discussed. In addition, some mechanisms of evolved PI resistance are presented, and speculations on the difference in sensitivity between cell or tumor types are brought forward. The review concludes by giving an outlook of recent methods that may be employed to describe the system biology of how PIs impact cell survival decisions. CRITICAL ISSUES The biology of ER stress, reactive oxygen species (ROS) production, and apoptosis as induced by PIs is not well understood. Absorbed by the strong focus on PIs, one might overlook the importance of proteasome activity activators or modulators and the study of enzymatic pathways that lie up- or downstream from the proteasome function. FUTURE DIRECTIONS An increased understanding of the systems biology at mRNA and protein levels and the kinetics behind the interaction between PIs and cells is imperative. The design and synthesis of subunit specific inhibitors for each of the seven known proteasome activities and for the enzymes associated to proteasomes will aid in unraveling biology of the ubiquitin-proteasome system in relation to ER stress, ROS production, and apoptosis and will generate leads for therapeutic intervention.
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Affiliation(s)
- Guillem Paniagua Soriano
- Gorlaeus Laboratories, Leiden Institute of Chemistry and Netherlands Proteomics Centre , Leiden, The Netherlands
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Lei Z, Brizzee C, Johnson GVW. BAG3 facilitates the clearance of endogenous tau in primary neurons. Neurobiol Aging 2014; 36:241-8. [PMID: 25212465 DOI: 10.1016/j.neurobiolaging.2014.08.012] [Citation(s) in RCA: 68] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2014] [Revised: 07/30/2014] [Accepted: 08/12/2014] [Indexed: 12/17/2022]
Abstract
Tau is a microtubule associated protein that is found primarily in neurons, and in pathologic conditions, such as Alzheimer's disease (AD) it accumulates and contributes to the disease process. Because tau plays a fundamental role in the pathogenesis of AD and other tauopathies, and in AD mouse models reducing tau levels improves outcomes, approaches that facilitate tau clearance are being considered as therapeutic strategies. However, fundamental to the development of such interventions is a clearer understanding of the mechanisms that regulate tau clearance. Here, we report a novel mechanism of tau degradation mediated by the co-chaperone BAG3. BAG3 has been shown to be an essential component of a complex that targets substrates to the autophagy pathway for degradation. In rat primary neurons, activation of autophagy by inhibition of proteasome activity or treatment with trehalose resulted in significant decreases in tau and phospho-tau levels. These treatments also induced an upregulation of BAG3. Proteasome inhibition activated JNK, which was responsible for the upregulation of BAG3 and increased tau clearance. Inhibiting JNK or knocking down BAG3 blocked the proteasome inhibition-induced decreases in tau. Further, BAG3 overexpression alone resulted in significant decreases in tau and phospho-tau levels in neurons. These results indicate that BAG3 plays a critical role in regulating the levels of tau in neurons, and interventions that increase BAG3 levels could provide a therapeutic approach in the treatment of AD.
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Affiliation(s)
- Zhinian Lei
- Department of Anesthesiology, University of Rochester Medical Center, University of Rochester, Rochester, NY, USA
| | - Corey Brizzee
- Department of Anesthesiology, University of Rochester Medical Center, University of Rochester, Rochester, NY, USA
| | - Gail V W Johnson
- Department of Anesthesiology, University of Rochester Medical Center, University of Rochester, Rochester, NY, USA.
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Minoia M, Boncoraglio A, Vinet J, Morelli FF, Brunsting JF, Poletti A, Krom S, Reits E, Kampinga HH, Carra S. BAG3 induces the sequestration of proteasomal clients into cytoplasmic puncta: implications for a proteasome-to-autophagy switch. Autophagy 2014; 10:1603-21. [PMID: 25046115 DOI: 10.4161/auto.29409] [Citation(s) in RCA: 108] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
Eukaryotic cells use autophagy and the ubiquitin-proteasome system as their major protein degradation pathways. Upon proteasomal impairment, cells switch to autophagy to ensure proper clearance of clients (the proteasome-to-autophagy switch). The HSPA8 and HSPA1A cochaperone BAG3 has been suggested to be involved in this switch. However, at present it is still unknown whether and to what extent BAG3 can indeed reroute proteasomal clients to the autophagosomal pathway. Here, we show that BAG3 induces the sequestration of ubiquitinated clients into cytoplasmic puncta colabeled with canonical autophagy linkers and markers. Following proteasome inhibition, BAG3 upregulation significantly contributes to the compensatory activation of autophagy and to the degradation of the (poly)ubiquitinated proteins. BAG3 binding to the ubiquitinated clients occurs through the BAG domain, in competition with BAG1, another BAG family member, that normally directs ubiquitinated clients to the proteasome. Therefore, we propose that following proteasome impairment, increasing the BAG3/BAG1 ratio ensures the "BAG-instructed proteasomal to autophagosomal switch and sorting" (BIPASS).
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Affiliation(s)
- Melania Minoia
- Department of Cell Biology; University Medical Center Groningen; University of Groningen; Groningen, The Netherlands
| | - Alessandra Boncoraglio
- Department of Cell Biology; University Medical Center Groningen; University of Groningen; Groningen, The Netherlands; Dipartimento di Scienze Farmacologiche e Biomolecolari (DiSFeB); Università degli Studi di Milano; Centro di Eccellenza sulle Patologie Neurodegenerative (CEND); Milano, Italy
| | - Jonathan Vinet
- Dipartimento di Scienze Biomediche; Metaboliche e Neuroscienze; Università degli Studi di Modena e Reggio Emilia; Modena, Italy
| | - Federica F Morelli
- Dipartimento di Scienze Biomediche; Metaboliche e Neuroscienze; Università degli Studi di Modena e Reggio Emilia; Modena, Italy
| | - Jeanette F Brunsting
- Department of Cell Biology; University Medical Center Groningen; University of Groningen; Groningen, The Netherlands
| | - Angelo Poletti
- Dipartimento di Scienze Farmacologiche e Biomolecolari (DiSFeB); Università degli Studi di Milano; Centro di Eccellenza sulle Patologie Neurodegenerative (CEND); Milano, Italy
| | - Sabine Krom
- Departments of Cell Biology and Histology; University of Amsterdam; Academic Medical Center; Amsterdam, The Netherlands
| | - Eric Reits
- Departments of Cell Biology and Histology; University of Amsterdam; Academic Medical Center; Amsterdam, The Netherlands
| | - Harm H Kampinga
- Department of Cell Biology; University Medical Center Groningen; University of Groningen; Groningen, The Netherlands
| | - Serena Carra
- Department of Cell Biology; University Medical Center Groningen; University of Groningen; Groningen, The Netherlands; Dipartimento di Scienze Biomediche; Metaboliche e Neuroscienze; Università degli Studi di Modena e Reggio Emilia; Modena, Italy
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Pasillas MP, Shields S, Reilly R, Strnadel J, Behl C, Park R, Yates JR, Klemke R, Gonias SL, Coppinger JA. Proteomic analysis reveals a role for Bcl2-associated athanogene 3 and major vault protein in resistance to apoptosis in senescent cells by regulating ERK1/2 activation. Mol Cell Proteomics 2014; 14:1-14. [PMID: 24997994 DOI: 10.1074/mcp.m114.037697] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
Senescence is a prominent solid tumor response to therapy in which cells avoid apoptosis and instead enter into prolonged cell cycle arrest. We applied a quantitative proteomics screen to identify signals that lead to therapy-induced senescence and discovered that Bcl2-associated athanogene 3 (Bag3) is up-regulated after adriamycin treatment in MCF7 cells. Bag3 is a member of the BAG family of co-chaperones that interacts with Hsp70. Bag3 also regulates major cell-signaling pathways. Mass spectrometry analysis of the Bag3 Complex revealed a novel interaction between Bag3 and Major Vault Protein (MVP). Silencing of Bag3 or MVP shifts the cellular response to adriamycin to favor apoptosis. We demonstrate that Bag3 and MVP contribute to apoptosis resistance in therapy-induced senescence by increasing the level of activation of extracellular signal-regulated kinase1/2 (ERK1/2). Silencing of either Bag3 or MVP decreased ERK1/2 activation and promoted apoptosis in adriamycin-treated cells. An increase in nuclear accumulation of MVP is observed during therapy-induced senescence and the shift in MVP subcellular localization is Bag3-dependent. We propose a model in which Bag3 binds to MVP and facilitates MVP accumulation in the nucleus, which sustains ERK1/2 activation. We confirmed that silencing of Bag3 or MVP shifts the response toward apoptosis and regulates ERK1/2 activation in a panel of diverse breast cancer cell lines. This study highlights Bag3-MVP as an important complex that regulates a potent prosurvival signaling pathway and contributes to chemotherapy resistance in breast cancer.
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Affiliation(s)
- Martina P Pasillas
- From the ‡Department of Pathology, University of California San Diego, La Jolla, CA 92093
| | - Sarah Shields
- §Conway Institute, University College Dublin, Belfield, Dublin 4, Ireland
| | - Rebecca Reilly
- §Conway Institute, University College Dublin, Belfield, Dublin 4, Ireland
| | - Jan Strnadel
- From the ‡Department of Pathology, University of California San Diego, La Jolla, CA 92093
| | - Christian Behl
- ¶Institute for Pathobiochemistry, University Medical Center of the Johannes Gutenberg-University Mainz, Duesbergweg 6, D-55099 Mainz, Germany
| | - Robin Park
- ‖Department of Chemical Physiology, the Scripps Research Institute, La, Jolla, California 92037
| | - John R Yates
- ‖Department of Chemical Physiology, the Scripps Research Institute, La, Jolla, California 92037
| | - Richard Klemke
- From the ‡Department of Pathology, University of California San Diego, La Jolla, CA 92093
| | - Steven L Gonias
- From the ‡Department of Pathology, University of California San Diego, La Jolla, CA 92093
| | - Judith A Coppinger
- From the ‡Department of Pathology, University of California San Diego, La Jolla, CA 92093; §Conway Institute, University College Dublin, Belfield, Dublin 4, Ireland;
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Roperto S, Russo V, Borzacchiello G, Urraro C, Lucà R, Esposito I, Riccardi MG, Raso C, Gaspari M, Ceccarelli DM, Galasso R, Roperto F. Bovine papillomavirus type 2 (BPV-2) E5 oncoprotein binds to the subunit D of the V₁-ATPase proton pump in naturally occurring urothelial tumors of the urinary bladder of cattle. PLoS One 2014; 9:e88860. [PMID: 24586417 PMCID: PMC3933332 DOI: 10.1371/journal.pone.0088860] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2013] [Accepted: 01/10/2014] [Indexed: 01/03/2023] Open
Abstract
Background Active infection by bovine papillomavirus type 2 (BPV-2) was documented for fifteen urinary bladder tumors in cattle. Two were diagnosed as papillary urothelial neoplasm of low malignant potential (PUNLMP), nine as papillary and four as invasive urothelial cancers. Methods and Findings In all cancer samples, PCR analysis revealed a BPV-2-specific 503 bp DNA fragment. E5 protein, the major oncoprotein of the virus, was shown both by immunoprecipitation and immunohistochemical analysis. E5 was found to bind to the activated (phosphorylated) form of the platelet derived growth factor β receptor. PDGFβR immunoprecipitation from bladder tumor samples and from normal bladder tissue used as control revealed a protein band which was present in the pull-down from bladder cancer samples only. The protein was identified with mass spectrometry as “V1-ATPase subunit D”, a component of the central stalk of the V1-ATPase vacuolar pump. The subunit D was confirmed in this complex by coimmunoprecipitation investigations and it was found to colocalize with the receptor. The subunit D was also shown to be overexpressed by Western blot, RT-PCR and immunofluorescence analyses. Immunoprecipitation and immunofluorescence also revealed that E5 oncoprotein was bound to the subunit D. Conclusion For the first time, a tri-component complex composed of E5/PDGFβR/subunit D has been documented in vivo. Previous in vitro studies have shown that the BPV-2 E5 oncoprotein binds to the proteolipid c ring of the V0-ATPase sector. We suggest that the E5/PDGFβR/subunit D complex may perturb proteostasis, organelle and cytosol homeostasis, which can result in altered protein degradation and in autophagic responses.
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Affiliation(s)
- Sante Roperto
- Dipartimento di Medicina Veterinaria e Produzioni Animali, Settore Malattie Infettive, Università di Napoli Federico II, Napoli, Italia
- * E-mail:
| | - Valeria Russo
- Dipartimento di Medicina Veterinaria e Produzioni Animali, Settore Patologia Generale, Università di Napoli Federico II, Napoli, Italia
| | - Giuseppe Borzacchiello
- Dipartimento di Medicina Veterinaria e Produzioni Animali, Settore Patologia Generale, Università di Napoli Federico II, Napoli, Italia
| | - Chiara Urraro
- Dipartimento di Medicina Veterinaria e Produzioni Animali, Settore Patologia Generale, Università di Napoli Federico II, Napoli, Italia
| | - Roberta Lucà
- Dipartimento di Medicina Veterinaria e Produzioni Animali, Settore Patologia Generale, Università di Napoli Federico II, Napoli, Italia
| | - Iolanda Esposito
- Dipartimento di Medicina Veterinaria e Produzioni Animali, Settore Patologia Generale, Università di Napoli Federico II, Napoli, Italia
| | - Marita Georgia Riccardi
- Dipartimento di Medicina Veterinaria e Produzioni Animali, Settore Patologia Generale, Università di Napoli Federico II, Napoli, Italia
| | - Cinzia Raso
- Dipartimento di Medicina Veterinaria e Produzioni Animali, Settore Patologia Generale, Università di Napoli Federico II, Napoli, Italia
| | - Marco Gaspari
- Dipartimento di Medicina Clinica e Sperimentale, Università di Catanzaro “Magna Graecia”, Catanzaro, Italia
| | - Dora Maria Ceccarelli
- Dipartimento di Medicina Veterinaria e Produzioni Animali, Settore Patologia Generale, Università di Napoli Federico II, Napoli, Italia
| | - Rocco Galasso
- Unit of clinical epidemiology, biostatistic and cancer registry, IRCCS CROB, Rionero in Vulture (Potenza), Italia
| | - Franco Roperto
- Dipartimento di Biologia, Università di Napoli Federico II, Napoli, Italia
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