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Dolatshahi M, Ranjbar Hameghavandi MH, Sabahi M, Rostamkhani S. Nuclear factor-kappa B (NF-κB) in pathophysiology of Parkinson disease: Diverse patterns and mechanisms contributing to neurodegeneration. Eur J Neurosci 2021; 54:4101-4123. [PMID: 33884689 DOI: 10.1111/ejn.15242] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2021] [Revised: 03/25/2021] [Accepted: 04/07/2021] [Indexed: 01/02/2023]
Abstract
Parkinson's disease (PD), the most common movement disorder, comprises several pathophysiologic mechanisms including misfolded alpha-synuclein aggregation, inflammation, mitochondrial dysfunction, and synaptic loss. Nuclear Factor-Kappa B (NF-κB), as a key regulator of a myriad of cellular reactions, is shown to be involved in such mechanisms associated with PD, and the changes in NF-κB expression is implicated in PD. Alpha-synuclein accumulation, the characteristic feature of PD pathology, is known to trigger NF-κB activation in neurons, thereby propagating apoptosis through several mechanisms. Furthermore, misfolded alpha-synuclein released from degenerated neurons, activates several signaling pathways in glial cells which culminate in activation of NF-κB and production of pro-inflammatory cytokines, thereby aggravating neurodegenerative processes. On the other hand, NF-κB activation, acting as a double-edged sword, can be necessary for survival of neurons. For instance, NF-κB activation is necessary for competent mitochondrial function and deficiency in c-Rel, one of the NF-κB proteins, is known to propagate DA neuron loss via several mechanisms. Despite the dual role of NF-κB in PD, several agents by selectively modifying the mechanisms and pathways associated with NF-κB, can be effective in attenuating DA neuron loss and PD, as reviewed in this paper.
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Affiliation(s)
- Mahsa Dolatshahi
- Faculty of Medicine, Tehran University of Medical Sciences, Tehran, Iran
- NeuroImaging Network (NIN), Universal Scientific Education and Research Network (USERN), Tehran, Iran
| | | | - Mohammadmahdi Sabahi
- NeuroImaging Network (NIN), Universal Scientific Education and Research Network (USERN), Tehran, Iran
- Neurosurgery Research Group (NRG), Student Research Committee, Hamadan University of Medical Sciences, Hamadan, Iran
| | - Sabra Rostamkhani
- Sina Trauma and Surgery Research Center, Tehran University of Medical Sciences, Tehran, Iran
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Manta B, Möller MN, Bonilla M, Deambrosi M, Grunberg K, Bellanda M, Comini MA, Ferrer-Sueta G. Kinetic studies reveal a key role of a redox-active glutaredoxin in the evolution of the thiol-redox metabolism of trypanosomatid parasites. J Biol Chem 2018; 294:3235-3248. [PMID: 30593501 DOI: 10.1074/jbc.ra118.006366] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2018] [Revised: 12/27/2018] [Indexed: 12/11/2022] Open
Abstract
Trypanosomes are flagellated protozoan parasites (kinetoplastids) that have a unique redox metabolism based on the small dithiol trypanothione (T(SH)2). Although GSH may still play a biological role in trypanosomatid parasites beyond being a building block of T(SH)2, most of its functions are replaced by T(SH)2 in these organisms. Consequently, trypanosomes have several enzymes adapted to using T(SH)2 instead of GSH, including the glutaredoxins (Grxs). However, the mechanistic basis of Grx specificity for T(SH)2 is unknown. Here, we combined fast-kinetic and biophysical approaches, including NMR, MS, and fluorescent tagging, to study the redox function of Grx1, the only cytosolic redox-active Grx in trypanosomes. We observed that Grx1 reduces GSH-containing disulfides (including oxidized trypanothione) in very fast reactions (k > 5 × 105 m-1 s-1). We also noted that disulfides without a GSH are much slower oxidants, suggesting a strongly selective binding of the GSH molecule. Not surprisingly, oxidized Grx1 was also reduced very fast by T(SH)2 (4.8 × 106 m-1 s-1); however, GSH-mediated reduction was extremely slow (39 m-1 s-1). This kinetic selectivity in the reduction step of the catalytic cycle suggests that Grx1 uses preferentially a dithiol mechanism, forming a disulfide on the active site during the oxidative half of the catalytic cycle and then being rapidly reduced by T(SH)2 in the reductive half. Thus, the reduction of glutathionylated substrates avoids GSSG accumulation in an organism lacking GSH reductase. These findings suggest that Grx1 has played an important adaptive role during the rewiring of the thiol-redox metabolism of kinetoplastids.
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Affiliation(s)
- Bruno Manta
- From the Grupo Biología Redox de Tripanosomas, Institut Pasteur de Montevideo, Montevideo 11400, Uruguay.,the Laboratorio de Fisicoquímica Biológica and
| | - Matías N Möller
- the Laboratorio de Fisicoquímica Biológica and.,the Center for Free Radical and Biomedical Research, Universidad de la República, Montevideo, Uruguay, and
| | - Mariana Bonilla
- From the Grupo Biología Redox de Tripanosomas, Institut Pasteur de Montevideo, Montevideo 11400, Uruguay.,the Laboratorio de Fisicoquímica Biológica and.,Laboratorio de Enzimología, Instituto de Química Biológica, Facultad de Ciencias, Universidad de la República, Montevideo 11400, Uruguay
| | - Matías Deambrosi
- From the Grupo Biología Redox de Tripanosomas, Institut Pasteur de Montevideo, Montevideo 11400, Uruguay.,Laboratorio de Enzimología, Instituto de Química Biológica, Facultad de Ciencias, Universidad de la República, Montevideo 11400, Uruguay
| | - Karin Grunberg
- From the Grupo Biología Redox de Tripanosomas, Institut Pasteur de Montevideo, Montevideo 11400, Uruguay.,the Laboratorio de Fisicoquímica Biológica and
| | - Massimo Bellanda
- the Dipartimento di Scienze Chimiche, Università degli Studi di Padova, Padova 35131, Italy
| | - Marcelo A Comini
- From the Grupo Biología Redox de Tripanosomas, Institut Pasteur de Montevideo, Montevideo 11400, Uruguay
| | - Gerardo Ferrer-Sueta
- the Laboratorio de Fisicoquímica Biológica and .,the Center for Free Radical and Biomedical Research, Universidad de la República, Montevideo, Uruguay, and
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Manta B, Bonilla M, Fiestas L, Sturlese M, Salinas G, Bellanda M, Comini MA. Polyamine-Based Thiols in Trypanosomatids: Evolution, Protein Structural Adaptations, and Biological Functions. Antioxid Redox Signal 2018; 28:463-486. [PMID: 29048199 DOI: 10.1089/ars.2017.7133] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
SIGNIFICANCE Major pathogenic enterobacteria and protozoan parasites from the phylum Euglenozoa, such as trypanosomatids, are endowed with glutathione (GSH)-spermidine (Sp) derivatives that play important roles in signaling and metal and thiol-redox homeostasis. For some Euglenozoa lineages, the GSH-Sp conjugates represent the main redox cosubstrates around which entire new redox systems have evolved. Several proteins underwent molecular adaptations to synthesize and utilize the new polyamine-based thiols. Recent Advances: The genomes of closely related organisms have recently been sequenced, which allows mining and analysis of gene sequences that belong to these peculiar redox systems. Similarly, the three-dimensional structures of several of these proteins have been solved, which allows for comparison with their counterparts in classical redox systems that rely on GSH/glutaredoxin and thioredoxin. CRITICAL ISSUES The evolutionary and structural aspects related to the emergence and use of GSH-Sp conjugates in Euglenozoa are reviewed focusing on unique structural specializations that proteins developed to use N1,N8-bisglutathionylspermidine (trypanothione) as redox cosubstrate. An updated overview on the biochemical and biological significance of the major enzymatic activities is also provided. FUTURE DIRECTIONS A thiol-redox system strictly dependent on trypanothione is a feature unique to trypanosomatids. The physicochemical properties of the polyamine-GSH conjugates were a major driving force for structural adaptation of proteins that use these thiols as ligand and redox cofactor. In fact, the structural differences of indispensable components of this system can be exploited toward selective drug development. Future research should clarify whether additional cellular processes are regulated by the trypanothione system. Antioxid. Redox Signal. 28, 463-486.
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Affiliation(s)
- Bruno Manta
- 1 Laboratory Redox Biology of Trypanosomes, Institut Pasteur de Montevideo , Montevideo, Uruguay .,2 Laboratorio de Fisicoquímica Biológica, Instituto de Química Biológica , Facultad de Ciencias, Universidad de la República, Montevideo, Uruguay
| | - Mariana Bonilla
- 1 Laboratory Redox Biology of Trypanosomes, Institut Pasteur de Montevideo , Montevideo, Uruguay .,2 Laboratorio de Fisicoquímica Biológica, Instituto de Química Biológica , Facultad de Ciencias, Universidad de la República, Montevideo, Uruguay
| | - Lucía Fiestas
- 1 Laboratory Redox Biology of Trypanosomes, Institut Pasteur de Montevideo , Montevideo, Uruguay
| | - Mattia Sturlese
- 3 Department of Chemical Sciences, Università degli Studi di Padova , Padova, Italy
| | - Gustavo Salinas
- 4 Worm Biology Lab, Institut Pasteur de Montevideo , Montevideo, Uruguay .,5 Departamento de Biociencias, Facultad de Química, Universidad de la República , Montevideo, Uruguay
| | - Massimo Bellanda
- 3 Department of Chemical Sciences, Università degli Studi di Padova , Padova, Italy
| | - Marcelo A Comini
- 1 Laboratory Redox Biology of Trypanosomes, Institut Pasteur de Montevideo , Montevideo, Uruguay
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Sun J, Wei X, Lu Y, Cui M, Li F, Lu J, Liu Y, Zhang X. Glutaredoxin 1 (GRX1) inhibits oxidative stress and apoptosis of chondrocytes by regulating CREB/HO-1 in osteoarthritis. Mol Immunol 2017; 90:211-218. [PMID: 28843170 DOI: 10.1016/j.molimm.2017.08.006] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2017] [Revised: 07/31/2017] [Accepted: 08/14/2017] [Indexed: 01/11/2023]
Abstract
GRX1 (glutaredoxin1), a sulfhydryl disulfide oxidoreductase, is involved in many cellular processes, including anti-oxidation, anti-apoptosis, and regulation of cell differentiation. However, the role of GRX1 in the oxidative stress and apoptosis of osteoarthritis chondrocytes remains unclear, prompting the current study. Protein and mRNA expressions were measured by Western blot and RT-qPCR. Oxidative stress was detected by the measurement of MDA and SOD contents. Cells apoptosis were detected by Annexin V-FITC/PI and caspase-3 activity assays. We found that the mRNA and protein expressions of GRX1 were significantly down-regulated in osteoarthritis tissues and cells. GRX1 overexpression increased the mRNA and protein expression of CREB and HO-1. Meanwhile, GRX1 overexpression inhibited oxidative stress and apoptosis in osteoarthritis chondrocytes. Furthermore, we found that GRX1 overexpression regulated HO-1 by increasing CREB, and that HO-1 regulated oxidative stress and apoptosis in osteoarthritis chondrocytes. Thus, GRX1 overexpression constrains oxidative stress and apoptosis in osteoarthritis chondrocytes by regulating CREB/HO-1, providing a novel insight into the molecular mechanism and potential treatment of osteoarthritis.
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Affiliation(s)
- Jie Sun
- Department of Orthopaedic Trauma, Tianjin Hospital, Tianjin, 300211, China
| | - Xuelei Wei
- Department of Orthopaedic Trauma, Tianjin Hospital, Tianjin, 300211, China.
| | - Yandong Lu
- Department of Orthopaedic Trauma, Tianjin Hospital, Tianjin, 300211, China
| | - Meng Cui
- Department of Orthopaedic Trauma, Tianjin Hospital, Tianjin, 300211, China
| | - Fangguo Li
- Department of Orthopaedic Trauma, Tianjin Hospital, Tianjin, 300211, China
| | - Jie Lu
- Department of Orthopaedic Trauma, Tianjin Hospital, Tianjin, 300211, China
| | - Yunjiao Liu
- Department of Orthopaedic Trauma, Tianjin Hospital, Tianjin, 300211, China
| | - Xi Zhang
- Department of Orthopaedic Trauma, Tianjin Hospital, Tianjin, 300211, China
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