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p23 and Aha1: Distinct Functions Promote Client Maturation. Subcell Biochem 2023; 101:159-187. [PMID: 36520307 DOI: 10.1007/978-3-031-14740-1_6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Hsp90 is a conserved molecular chaperone regulating the folding and activation of a diverse array of several hundreds of client proteins. The function of Hsp90 in client processing is fine-tuned by a cohort of co-chaperones that modulate client activation in a client-specific manner. They affect the Hsp90 ATPase activity and the recruitment of client proteins and can in addition affect chaperoning in an Hsp90-independent way. p23 and Aha1 are central Hsp90 co-chaperones that regulate Hsp90 in opposing ways. While p23 inhibits the Hsp90 ATPase and stabilizes a client-bound Hsp90 state, Aha1 accelerates ATP hydrolysis and competes with client binding to Hsp90. Even though both proteins have been intensively studied for decades, research of the last few years has revealed intriguing new aspects of these co-chaperones that expanded our perception of how they regulate client activation. Here, we review the progress in understanding p23 and Aha1 as promoters of client processing. We highlight the structures of Aha1 and p23, their interaction with Hsp90, and how their association with Hsp90 affects the conformational cycle of Hsp90 in the context of client maturation.
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Fedotcheva TA, Fedotcheva NI, Shimanovsky NL. Progesterone as an Anti-Inflammatory Drug and Immunomodulator: New Aspects in Hormonal Regulation of the Inflammation. Biomolecules 2022; 12:biom12091299. [PMID: 36139138 PMCID: PMC9496164 DOI: 10.3390/biom12091299] [Citation(s) in RCA: 26] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2022] [Revised: 09/10/2022] [Accepted: 09/11/2022] [Indexed: 11/25/2022] Open
Abstract
The specific regulation of inflammatory processes by steroid hormones has been actively studied in recent years, especially by progesterone (P4) and progestins. The mechanisms of the anti-inflammatory and immunomodulatory P4 action are not fully clear. The anti-inflammatory effects of P4 can be defined as nonspecific, associated with the inhibition of NF-κB and COX, as well as the inhibition of prostaglandin synthesis, or as specific, associated with the regulation of T-cell activation, the regulation of the production of pro- and anti-inflammatory cytokines, and the phenomenon of immune tolerance. The specific anti-inflammatory effects of P4 and its derivatives (progestins) can also include the inhibition of proliferative signaling pathways and the antagonistic action against estrogen receptor beta-mediated signaling as a proinflammatory and mitogenic factor. The anti-inflammatory action of P4 is accomplished through the participation of progesterone receptor (PR) chaperones HSP90, as well as immunophilins FKBP51 and FKBP52, which are the validated targets of clinically approved immunosuppressive drugs. The immunomodulatory and anti-inflammatory effects of HSP90 inhibitors, tacrolimus and cyclosporine, are manifested, among other factors, due to their participation in the formation of an active ligand–receptor complex of P4 and their interaction with its constituent immunophilins. Pharmacological agents such as HSP90 inhibitors can restore the lost anti-inflammatory effect of glucocorticoids and P4 in chronic inflammatory and autoimmune diseases. By regulating the activity of FKBP51 and FKBP52, it is possible to increase or decrease hormonal signaling, as well as restore it during the development of hormone resistance. The combined action of immunophilin suppressors with steroid hormones may be a promising strategy in the treatment of chronic inflammatory and autoimmune diseases, including endometriosis, stress-related disorders, rheumatoid arthritis, and miscarriages. Presumably, the hormone receptor- and immunophilin-targeted drugs may act synergistically, allowing for a lower dose of each.
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Affiliation(s)
- Tatiana A. Fedotcheva
- Science Research Laboratory of Molecular Pharmacology, Medical Biological Faculty, Pirogov Russian National Research Medical University, Ministry of Health of the Russian Federation, Ostrovityanova St. 1, Moscow 117997, Russia
- Correspondence: ; Tel.: +7-9169353196
| | - Nadezhda I. Fedotcheva
- Institute of Theoretical and Experimental Biophysics, Russian Academy of Sciences, Institutskaya Str. 3, Pushchino 142290, Russia
| | - Nikolai L. Shimanovsky
- Science Research Laboratory of Molecular Pharmacology, Medical Biological Faculty, Pirogov Russian National Research Medical University, Ministry of Health of the Russian Federation, Ostrovityanova St. 1, Moscow 117997, Russia
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Martins CS, de Castro M. Generalized and tissue specific glucocorticoid resistance. Mol Cell Endocrinol 2021; 530:111277. [PMID: 33864884 DOI: 10.1016/j.mce.2021.111277] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/18/2020] [Revised: 03/29/2021] [Accepted: 03/31/2021] [Indexed: 12/20/2022]
Abstract
Glucocorticoids (GCs) are steroid hormones that influence several physiologic functions and are among the most frequently prescribed drugs worldwide. Resistance to GCs has been observed in the context of the familial generalized GC resistance (Chrousos' syndrome) or tissue specific GC resistance in chronic inflammatory states. In this review, we have summarized the major factors that influence individual glucocorticoid sensitivity/resistance. The fine-tuning of GC action is determined in a tissue-specific fashion that includes the combination of different GC receptor promoters, translation initiation sites, splice isoforms, interacting proteins, post-translational modifications, and alternative mechanisms of signal transduction.
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Affiliation(s)
- Clarissa Silva Martins
- Department of Internal Medicine - Ribeirao Preto Medical School - University of Sao Paulo, Ribeirao Preto, SP, Brazil; School of Medicine, Federal University of Mato Grosso do Sul, Campo Grande, MS, Brazil
| | - Margaret de Castro
- Department of Internal Medicine - Ribeirao Preto Medical School - University of Sao Paulo, Ribeirao Preto, SP, Brazil.
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Daneri-Becerra C, Valeiras B, Gallo LI, Lagadari M, Galigniana MD. Cyclophilin A is a mitochondrial factor that forms complexes with p23 - correlative evidence for an anti-apoptotic action. J Cell Sci 2021; 134:jcs.253401. [PMID: 33361281 DOI: 10.1242/jcs.253401] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2020] [Accepted: 12/15/2020] [Indexed: 12/22/2022] Open
Abstract
Cyclophilin A (CyPA, also known as PPIA) is an abundant and ubiquitously expressed protein belonging to the immunophilin family, which has intrinsic peptidyl-prolyl-(cis/trans)-isomerase enzymatic activity. CyPA mediates immunosuppressive action of the cyclic undecapeptide cyclosporine A and is also involved in multiple cellular processes, such as protein folding, intracellular trafficking, signal transduction and transcriptional regulation. CyPA is abundantly expressed in cancer cells, and, owing to its chaperone nature, its expression is induced upon the onset of stress. In this study, we demonstrated that a significant pool of this immunophilin is primarily an intramitochondrial factor that migrates to the nucleus when cells are stimulated with stressors. CyPA shows anti-apoptotic action per se and the capability of forming ternary complexes with cytochrome c and the small acidic co-chaperone p23, the latter interaction being independent of the usual association of p23 with the heat-shock protein of 90 kDa, Hsp90. These CyPA•p23 complexes enhance the anti-apoptotic response of the cell, suggesting that both proteins form a functional unit, the high level of expression of which plays a significant role in cell survival.
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Affiliation(s)
- Cristina Daneri-Becerra
- Instituto de Biología y Medicina Experimental-Consejo Nacional de Investigaciones, Científicas y Técnicas (CONICET), Buenos Aires C1428ADN, Argentina
| | - Brenda Valeiras
- Instituto de Biología y Medicina Experimental-Consejo Nacional de Investigaciones, Científicas y Técnicas (CONICET), Buenos Aires C1428ADN, Argentina
| | - Luciana I Gallo
- Instituto de Fisiología, Biología Molecular y Neurociencias CONICET/Universidad de Buenos Aires, Buenos Aires C1428EGA, Argentina
| | - Mariana Lagadari
- Instituto de Biología y Medicina Experimental-Consejo Nacional de Investigaciones, Científicas y Técnicas (CONICET), Buenos Aires C1428ADN, Argentina
| | - Mario D Galigniana
- Instituto de Biología y Medicina Experimental-Consejo Nacional de Investigaciones, Científicas y Técnicas (CONICET), Buenos Aires C1428ADN, Argentina .,Departamento de Química Biológica, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Buenos Aires C1428EGA, Argentina
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Structural elements in the flexible tail of the co-chaperone p23 coordinate client binding and progression of the Hsp90 chaperone cycle. Nat Commun 2021; 12:828. [PMID: 33547294 PMCID: PMC7864943 DOI: 10.1038/s41467-021-21063-0] [Citation(s) in RCA: 29] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2020] [Accepted: 01/08/2021] [Indexed: 01/30/2023] Open
Abstract
The co-chaperone p23 is a central part of the Hsp90 machinery. It stabilizes the closed conformation of Hsp90, inhibits its ATPase and is important for client maturation. Yet, how this is achieved has remained enigmatic. Here, we show that a tryptophan residue in the proximal region of the tail decelerates the ATPase by allosterically switching the conformation of the catalytic loop in Hsp90. We further show by NMR spectroscopy that the tail interacts with the Hsp90 client binding site via a conserved helix. This helical motif in the p23 tail also binds to the client protein glucocorticoid receptor (GR) in the free and Hsp90-bound form. In vivo experiments confirm the physiological importance of ATPase modulation and the role of the evolutionary conserved helical motif for GR activation in the cellular context.
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Yu X, Mao M, Liu X, Shen T, Li T, Yu H, Zhang J, Chen X, Zhao X, Zhu D. A cytosolic heat shock protein 90 and co-chaperone p23 complex activates RIPK3/MLKL during necroptosis of endothelial cells in acute respiratory distress syndrome. J Mol Med (Berl) 2020; 98:569-583. [PMID: 32072232 DOI: 10.1007/s00109-020-01886-y] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2019] [Revised: 01/08/2020] [Accepted: 02/04/2020] [Indexed: 12/26/2022]
Abstract
Necrosis with inflammation plays a crucial role in acute respiratory distress syndrome (ARDS). Receptor-interacting protein 3 (RIPK3) regulates a newly discovered programmed form of necrosis called necroptosis. However, the underlying mechanism of necroptosis in ARDS remains unknown. Thus, the purpose of this study was to examine the possible involvement of RIPK3 in ARDS-associated necroptosis. RIPK3 protein levels were found to be significantly elevated in the plasma and bronchoalveolar lavage fluid of ARDS patients. Next, we utilised a mouse model of severe ARDS induced with high-dose lipopolysaccharide and found that lung injury was mainly due to RIPK3-mixed lineage kinase domain-like pseudokinase (MLKL)-mediated necroptosis and endothelial dysfunction. The activation of RIPK3-MLKL by tumour necrosis factor receptor 1 (TNFR1) and TNFR1-associated death domain protein (TRADD) required catalytically active RIPK1 and the inhibition of Fas-associated protein with death domain (FADD)/caspase-8 catalytic activity. We further showed that the molecular chaperone heat shock protein 90 (Hsp90)/p23, as a novel RIPK3- and MLKL-interacting complex, played an important role in RIP-MLKL-mediated necroptosis, inflammation and endothelial dysfunction in the pulmonary vasculature, which resulted in ARDS. Collectively, the results of our study indicate that necroptosis is an important mechanism of cell death in ARDS and the inhibition of necroptosis may be a therapeutic intervention for ARDS. KEY MESSAGES: Lung injury in high-dose LPS-induced severe ARDS is mainly due to RIP3-MLKL-mediated necroptosis and endothelial dysfunction. Chaperone HSP90/p23 is a novel RIP3- and MLKL-interacting complex in HPAECs. HSP90/p23 is a novel RIP3- and MLKL-interacting complex in RIP-MLKL-mediated necroptosis, inflammation and endothelial dysfunction.
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Affiliation(s)
- Xiufeng Yu
- College of Medical Laboratory Science and Technology, Harbin Medical University (Daqing), 163319, Daqing, People's Republic of China
- Central Laboratory of Harbin Medical University (Daqing), 163319, Daqing, People's Republic of China
| | - Min Mao
- Central Laboratory of Harbin Medical University (Daqing), 163319, Daqing, People's Republic of China
- Department of Biopharmaceutical Sciences, College of Pharmacy, Harbin Medical University, 150081, Harbin, People's Republic of China
| | - Xia Liu
- Central Laboratory of Harbin Medical University (Daqing), 163319, Daqing, People's Republic of China
- Department of Biopharmaceutical Sciences, College of Pharmacy, Harbin Medical University, 150081, Harbin, People's Republic of China
| | - Tingting Shen
- Central Laboratory of Harbin Medical University (Daqing), 163319, Daqing, People's Republic of China
- Department of Biopharmaceutical Sciences, College of Pharmacy, Harbin Medical University, 150081, Harbin, People's Republic of China
| | - Tingting Li
- Central Laboratory of Harbin Medical University (Daqing), 163319, Daqing, People's Republic of China
- Department of Biopharmaceutical Sciences, College of Pharmacy, Harbin Medical University, 150081, Harbin, People's Republic of China
| | - Hao Yu
- Central Laboratory of Harbin Medical University (Daqing), 163319, Daqing, People's Republic of China
- Department of Biopharmaceutical Sciences, College of Pharmacy, Harbin Medical University, 150081, Harbin, People's Republic of China
| | - Junting Zhang
- Central Laboratory of Harbin Medical University (Daqing), 163319, Daqing, People's Republic of China
- Department of Biopharmaceutical Sciences, College of Pharmacy, Harbin Medical University, 150081, Harbin, People's Republic of China
| | - Xinxin Chen
- Central Laboratory of Harbin Medical University (Daqing), 163319, Daqing, People's Republic of China
- Department of Biopharmaceutical Sciences, College of Pharmacy, Harbin Medical University, 150081, Harbin, People's Republic of China
| | - Xijuan Zhao
- College of Medical Laboratory Science and Technology, Harbin Medical University (Daqing), 163319, Daqing, People's Republic of China
- Central Laboratory of Harbin Medical University (Daqing), 163319, Daqing, People's Republic of China
| | - Daling Zhu
- Central Laboratory of Harbin Medical University (Daqing), 163319, Daqing, People's Republic of China.
- Department of Biopharmaceutical Sciences, College of Pharmacy, Harbin Medical University, 150081, Harbin, People's Republic of China.
- Department of Pharmacology, Harbin Medical University (Daqing), 163319, Daqing, People's Republic of China.
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Scieglinska D, Krawczyk Z, Sojka DR, Gogler-Pigłowska A. Heat shock proteins in the physiology and pathophysiology of epidermal keratinocytes. Cell Stress Chaperones 2019; 24:1027-1044. [PMID: 31734893 PMCID: PMC6882751 DOI: 10.1007/s12192-019-01044-5] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2019] [Revised: 10/09/2019] [Accepted: 10/15/2019] [Indexed: 12/21/2022] Open
Abstract
Heat shock proteins (HSPs), a large group of highly evolutionary conserved proteins, are considered to be main elements of the cellular proteoprotection system. HSPs are encoded by genes activated during the exposure of cells to proteotoxic factors, as well as by genes that are expressed constitutively under physiological conditions. HSPs, having properties of molecular chaperones, are involved in controlling/modulation of multiple cellular and physiological processes. In the presented review, we summarize the current knowledge on HSPs in the biology of epidermis, the outer skin layer composed of stratified squamous epithelium. This tissue has a vital barrier function preventing from dehydratation due to passive diffusion of water out of the skin, and protecting from infection and other environmental insults. We focused on HSPB1 (HSP27), HSPA1 (HSP70), HSPA2, and HSPC (HSP90), because only these HSPs have been studied in the context of physiology and pathophysiology of the epidermis. The analysis of literature data shows that HSPB1 plays a role in the regulation of final steps of keratinization; HSPA1 is involved in the cytoprotection, HSPA2 contributes to the early steps of keratinocyte differentiation, while HSPC is essential in the re-epithelialization process. Since HSPs have diverse functions in various types of somatic tissues, in spite of multiple investigations, open questions still remain about detailed roles of a particular HSP isoform in the biology of epidermal keratinocytes.
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Affiliation(s)
- Dorota Scieglinska
- Center for Translational Research and Molecular Biology of Cancer, Maria Skłodowska-Curie Institute-Oncology Center Gliwice Branch, ul. Wybrzeże Armii Krajowej 15, 44-101, Gliwice, Poland.
| | - Zdzisław Krawczyk
- Center for Translational Research and Molecular Biology of Cancer, Maria Skłodowska-Curie Institute-Oncology Center Gliwice Branch, ul. Wybrzeże Armii Krajowej 15, 44-101, Gliwice, Poland
| | - Damian Robert Sojka
- Center for Translational Research and Molecular Biology of Cancer, Maria Skłodowska-Curie Institute-Oncology Center Gliwice Branch, ul. Wybrzeże Armii Krajowej 15, 44-101, Gliwice, Poland
| | - Agnieszka Gogler-Pigłowska
- Center for Translational Research and Molecular Biology of Cancer, Maria Skłodowska-Curie Institute-Oncology Center Gliwice Branch, ul. Wybrzeże Armii Krajowej 15, 44-101, Gliwice, Poland
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Encarnação T, Pais AACC, Campos MG, Burrows HD. Endocrine disrupting chemicals: Impact on human health, wildlife and the environment. Sci Prog 2019; 102:3-42. [PMID: 31829784 PMCID: PMC10424550 DOI: 10.1177/0036850419826802] [Citation(s) in RCA: 68] [Impact Index Per Article: 13.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Endocrine disrupting chemicals are a group of pollutants that can affect the endocrine system and lead to diseases and dysfunctions across the lifespan of organisms. They are omnipresent. They are in the air we breathe, in the food we eat and in the water we drink. They can be found in our everyday lives through personal care products, household cleaning products, furniture and in children's toys. Every year, hundreds of new chemicals are produced and released onto the market without being tested, and they reach our bodies through everyday products. Permanent exposure to those chemicals may intensify or even become the main cause for the development of diseases such as type 2 diabetes, obesity, cardiovascular diseases and certain types of cancer. In recent years, legislation and regulations have been implemented, which aim to control the release of potentially adverse endocrine disrupting chemicals, often invoking the precautionary principle. The objective of this review is to provide an overview of research on environmental aspects of endocrine disrupting chemicals and their effects on human health, based on evidence from animal and human studies. Emphasis is given to three ubiquitous and persistent groups of chemicals, polychlorinated biphenyls, polybrominated diphenyl ethers and organochlorine pesticides, and on two non-persistent, but ubiquitous, bisphenol A and phthalates. Some selected historical cases are also presented and successful cases of regulation and legislation described. These led to a decrease in exposure and consequent minimization of the effects of these compounds. Recommendations from experts on this field, World Health Organization, scientific reports and from the Endocrine Society are included.
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Affiliation(s)
- Telma Encarnação
- CQC, Department of Chemistry, University of Coimbra, Coimbra, Portugal
| | - Alberto ACC Pais
- CQC, Department of Chemistry, University of Coimbra, Coimbra, Portugal
| | - Maria G Campos
- CQC, Department of Chemistry, University of Coimbra, Coimbra, Portugal
| | - Hugh D Burrows
- CQC, Department of Chemistry, University of Coimbra, Coimbra, Portugal
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