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Yao L, Xu W, Liu L, Xu X, Xi H, Xue B, Cao X, Lin S, Piao G, Sun J, Wang X. The involvement of Neuregulin-1 in the process of facial nerve injury repair through the utilization of dental pulp stem cells. BMC Oral Health 2024; 24:238. [PMID: 38355448 PMCID: PMC10868091 DOI: 10.1186/s12903-024-03953-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2023] [Accepted: 01/29/2024] [Indexed: 02/16/2024] Open
Abstract
BACKGROUND Facial nerve injury often results in poor prognosis due to the challenging process of nerve regeneration. Neuregulin-1, a human calmodulin, is under investigation in this study for its impact on the reparative capabilities of Dental Pulp Stem Cells (DPSCs) in facial nerve injury. METHODS Lentivirus was used to transfect and construct Neuregulin-1 overexpressed DPSCs. Various techniques assessed the effects of Neuregulin-1: osteogenic induction, lipid induction, Reverse Transcription Polymerase Chain Reaction, Western Blot, Cell Counting Kit-8 assay, wound healing, immunofluorescence, Phalloidin staining, nerve stem action potential, Hematoxylin-eosin staining, transmission electron microscopy, and immunohistochemistry. RESULTS Neuregulin-1 effectively enhanced the proliferation, migration, and cytoskeletal rearrangement of DPSCs, while simultaneously suppressing the expression of Ras homolog gene family member A (RhoA) and Microfilament actin (F-actin). These changes facilitated the neural differentiation of DPSCs. Additionally, in vivo experiments showed that Neuregulin-1 expedited the restoration of action potential in the facial nerve trunk, increased the thickness of the myelin sheath, and stimulated axon regeneration. CONCLUSION Neuregulin-1 has the capability to facilitate the repair of facial nerve injuries by promoting the regenerative capacity of DPSCs. Thus, Neuregulin-1 is a significant potential gene in the reparative processes of nerve damage.
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Affiliation(s)
- Lihong Yao
- Department of Stomatology, The Second Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang Province, 150001, China
| | - Wanqiu Xu
- Department of Stomatology, The Second Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang Province, 150001, China
| | - Lixue Liu
- Department of Stomatology, The Second Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang Province, 150001, China
| | - Xiaohang Xu
- Department of Stomatology, The Second Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang Province, 150001, China
| | - Hualei Xi
- Department of Stomatology, The Second Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang Province, 150001, China
| | - Bing Xue
- Department of Stomatology, The Second Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang Province, 150001, China
| | - Xiaofang Cao
- Department of Stomatology, The Second Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang Province, 150001, China
| | - Song Lin
- Department of Stomatology, The Second Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang Province, 150001, China
| | - Guiyan Piao
- Department of Stomatology, The Second Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang Province, 150001, China
| | - Jian Sun
- Mudanjiang Medical University, Mudanjiang, Heilongjiang Province, China
| | - Xiumei Wang
- Department of Stomatology, The Second Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang Province, 150001, China.
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Volik PI, Kopeina GS, Zhivotovsky B, Zamaraev AV. Total recall: the role of PIDDosome components in neurodegeneration. Trends Mol Med 2023; 29:996-1013. [PMID: 37716905 DOI: 10.1016/j.molmed.2023.08.008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2023] [Revised: 08/23/2023] [Accepted: 08/25/2023] [Indexed: 09/18/2023]
Abstract
The PIDDosome is a multiprotein complex that includes p53-induced protein with a death domain 1 (PIDD1), receptor-interacting protein-associated ICH-1/CED-3 homologous protein with a death domain (RAIDD), and caspase-2, the activation of which is driven by PIDDosome assembly. In addition to the key role of the PIDDosome in the regulation of cell differentiation, tissue homeostasis, and organogenesis and regeneration, caspase-2, RAIDD and PIDD1 engagement in neuronal development was shown. Here, we focus on the involvement of PIDDosome components in neurodegenerative disorders, including retinal neuropathies, different types of brain damage, and Alzheimer's disease (AD), Huntington's disease (HD), and Lewy body disease. We also discuss pathogenic variants of PIDD1, RAIDD, and caspase-2 that are associated with intellectual, behavioral, and psychological abnormalities, together with prospective PIDDosome inhibition strategies and their potential clinical application.
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Affiliation(s)
- Pavel I Volik
- Facuty of Medicine, MV Lomonosov Moscow State University, 119991 Moscow, Russia; Engelhardt Institute of Molecular Biology, RAS, 119991 Moscow, Russia
| | - Gelina S Kopeina
- Facuty of Medicine, MV Lomonosov Moscow State University, 119991 Moscow, Russia; Engelhardt Institute of Molecular Biology, RAS, 119991 Moscow, Russia
| | - Boris Zhivotovsky
- Facuty of Medicine, MV Lomonosov Moscow State University, 119991 Moscow, Russia; Engelhardt Institute of Molecular Biology, RAS, 119991 Moscow, Russia; Division of Toxicology, Institute of Environmental Medicine, Karolinska Institutet, Box 210, 17177 Stockholm, Sweden.
| | - Alexey V Zamaraev
- Facuty of Medicine, MV Lomonosov Moscow State University, 119991 Moscow, Russia; Engelhardt Institute of Molecular Biology, RAS, 119991 Moscow, Russia.
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3
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Rodríguez-Giraldo M, González-Reyes RE, Ramírez-Guerrero S, Bonilla-Trilleras CE, Guardo-Maya S, Nava-Mesa MO. Astrocytes as a Therapeutic Target in Alzheimer's Disease-Comprehensive Review and Recent Developments. Int J Mol Sci 2022; 23:13630. [PMID: 36362415 PMCID: PMC9654484 DOI: 10.3390/ijms232113630] [Citation(s) in RCA: 27] [Impact Index Per Article: 13.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2022] [Revised: 10/25/2022] [Accepted: 10/26/2022] [Indexed: 09/20/2023] Open
Abstract
Alzheimer's disease (AD) is a frequent and disabling neurodegenerative disorder, in which astrocytes participate in several pathophysiological processes including neuroinflammation, excitotoxicity, oxidative stress and lipid metabolism (along with a critical role in apolipoprotein E function). Current evidence shows that astrocytes have both neuroprotective and neurotoxic effects depending on the disease stage and microenvironmental factors. Furthermore, astrocytes appear to be affected by the presence of amyloid-beta (Aβ), with alterations in calcium levels, gliotransmission and proinflammatory activity via RAGE-NF-κB pathway. In addition, astrocytes play an important role in the metabolism of tau and clearance of Aβ through the glymphatic system. In this review, we will discuss novel pharmacological and non-pharmacological treatments focused on astrocytes as therapeutic targets for AD. These interventions include effects on anti-inflammatory/antioxidant systems, glutamate activity, lipid metabolism, neurovascular coupling and glymphatic system, calcium dysregulation, and in the release of peptides which affects glial and neuronal function. According to the AD stage, these therapies may be of benefit in either preventing or delaying the progression of the disease.
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Affiliation(s)
| | | | | | | | | | - Mauricio O. Nava-Mesa
- Grupo de Investigación en Neurociencias (NeURos), Centro de Neurociencias Neurovitae-UR, Instituto de Medicina Traslacional (IMT), Escuela de Medicina y Ciencias de la Salud, Universidad del Rosario, Bogotá 111711, Colombia
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4
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Xue M, Chen S, Xi J, Guan Q, Chen W, Guo Y, Chen Z. Protection against Hypoxia-Reoxygenation Injury of Hippocampal Neurons by H2S via Promoting Phosphorylation of ROCK2 at Tyr722 in Rat Model. Molecules 2022; 27:molecules27144567. [PMID: 35889443 PMCID: PMC9319530 DOI: 10.3390/molecules27144567] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2022] [Revised: 06/30/2022] [Accepted: 07/15/2022] [Indexed: 02/01/2023] Open
Abstract
The RhoA-ROCK signaling pathway is associated with the protective effects of hydrogen sulfide (H2S) against cerebral ischemia. H2S protects rat hippocampal neurons (RHNs) against hypoxia-reoxygenation (H/R) injury by promoting phosphorylation of RhoA at Ser188. However, effect of H2S on the phosphorylation of ROCK2-related sites is unclear. The present study was designed to investigate whether H2S can play a role in the phosphorylation of ROCK2 at Tyr722, and explore whether this role mediates the protective effect of H/R injury in RHNs. Prokaryotic recombinant plasmids ROCK2wild-pGEX-6P-1 and ROCK2Y722F-pGEX-6P-1 were constructed and transfected into E. coli in vitro, and the expressed protein, GST-ROCK2wild and GST-ROCK2Y722F were used for phosphorylation assay in vitro. Eukaryotic recombinant plasmids ROCK2Y722-pEGFP-N1 and ROCK2Y722F-pEGFP-N1 as well as empty plasmid were transfected into the RHNs. Western blot assay and whole-cell patch-clamp technique were used to detect phosphorylation of ROCK2 at Tyr722 and BKCa channel current in the RHNs, respectively. Cell viability, leakages of intracellular enzymes lactate dehydrogenase (LDH), and nerve-specific enolase (NSE) were measured. The H/R injury was indicated by decrease of cell viability and leakages of intracellular LDH and NSE. The results of Western blot have shown that NaHS, a H2S donor, significantly promoted phosphorylation of GST-ROCK2wild at Tyr722, while no phosphorylation of GST-ROCK2Y722F was detected. The phosphorylation of ROCK2wild promoted by NaHS was also observed in RHNs. NaHS induced more potent effects on protection against H/R injury, phosphorylation of ROCK2 at Tyr722, inhibition of ROCK2 activity, as well as increase of the BKCa current in the ROCK2Y722-pEGFP-N1-transfected RHNs. Our results revealed that H2S protects the RHNs from H/R injury through promoting phosphorylation of ROCK2 at Tyr722 to inhibit ROCK2 activity and potentially by opening channel currents.
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Affiliation(s)
| | | | | | | | | | - Yan Guo
- Correspondence: (Y.G.); (Z.C.); Tel.: +86-0551-65161133 (Y.G.); +86-0551-65161133 (Z.C.)
| | - Zhiwu Chen
- Correspondence: (Y.G.); (Z.C.); Tel.: +86-0551-65161133 (Y.G.); +86-0551-65161133 (Z.C.)
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5
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Diaz-Amarilla P, Arredondo F, Dapueto R, Boix V, Carvalho D, Santi MD, Vasilskis E, Mesquita-Ribeiro R, Dajas-Bailador F, Abin-Carriquiry JA, Engler H, Savio E. Isolation and characterization of neurotoxic astrocytes derived from adult triple transgenic Alzheimer's disease mice. Neurochem Int 2022; 159:105403. [PMID: 35853553 DOI: 10.1016/j.neuint.2022.105403] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2022] [Revised: 06/02/2022] [Accepted: 07/09/2022] [Indexed: 01/16/2023]
Abstract
Alzheimer's disease has been considered mostly as a neuronal pathology, although increasing evidence suggests that glial cells might play a key role in the disease onset and progression. In this sense, astrocytes, with their central role in neuronal metabolism and function, are of great interest for increasing our understanding of the disease. Thus, exploring the morphological and functional changes suffered by astrocytes along the course of this disorder has great therapeutic and diagnostic potential. In this work we isolated and cultivated astrocytes from symptomatic 9-10-months-old adult 3xTg-AD mice, with the aim of characterizing their phenotype and exploring their pathogenic potential. These "old" astrocytes occurring in the 3xTg-AD mouse model of Alzheimer's Disease presented high proliferation rate and differential expression of astrocytic markers compared with controls. They were neurotoxic to primary neuronal cultures both, in neuronal-astrocyte co-cultures and when their conditioned media (ACM) was added into neuronal cultures. ACM caused neuronal GSK3β activation, changes in cytochrome c pattern, and increased caspase 3 activity, suggesting intrinsic apoptotic pathway activation. Exposure of neurons to ACM caused different subcellular responses. ACM application to the somato-dendritic domain in compartmentalised microfluidic chambers caused degeneration both locally in soma/dendrites and distally in axons. However, exposure of axons to ACM did not affect somato-dendritic nor axonal integrity. We propose that this newly described old 3xTg-AD neurotoxic astrocytic population can contribute towards the mechanistic understanding of the disease and shed light on new therapeutical opportunities.
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Affiliation(s)
- Pablo Diaz-Amarilla
- Area I+D Biomédica, Centro Uruguayo de Imagenología Molecular, 11600, Montevideo, Uruguay
| | - Florencia Arredondo
- Area I+D Biomédica, Centro Uruguayo de Imagenología Molecular, 11600, Montevideo, Uruguay; Departamento de Neuroquímica, Instituto de Investigaciones Biológicas Clemente Estable, 11600, Montevideo, Uruguay.
| | - Rosina Dapueto
- Area I+D Biomédica, Centro Uruguayo de Imagenología Molecular, 11600, Montevideo, Uruguay
| | - Victoria Boix
- Departamento de Neuroquímica, Instituto de Investigaciones Biológicas Clemente Estable, 11600, Montevideo, Uruguay
| | - Diego Carvalho
- Departamento de Neuroquímica, Instituto de Investigaciones Biológicas Clemente Estable, 11600, Montevideo, Uruguay
| | - María Daniela Santi
- Area I+D Biomédica, Centro Uruguayo de Imagenología Molecular, 11600, Montevideo, Uruguay
| | - Elena Vasilskis
- Area I+D Biomédica, Centro Uruguayo de Imagenología Molecular, 11600, Montevideo, Uruguay
| | - Raquel Mesquita-Ribeiro
- School of Life Sciences, Medical School Building, University of Nottingham, NG7 2UH, Nottingham, UK
| | - Federico Dajas-Bailador
- School of Life Sciences, Medical School Building, University of Nottingham, NG7 2UH, Nottingham, UK
| | - Juan Andrés Abin-Carriquiry
- Departamento de Neuroquímica, Instituto de Investigaciones Biológicas Clemente Estable, 11600, Montevideo, Uruguay
| | - Henry Engler
- Area I+D Biomédica, Centro Uruguayo de Imagenología Molecular, 11600, Montevideo, Uruguay.
| | - Eduardo Savio
- Area I+D Biomédica, Centro Uruguayo de Imagenología Molecular, 11600, Montevideo, Uruguay.
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6
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Electroacupuncture promotes apoptosis and inhibits axonogenesis by activating p75 neurotrophin receptor for triple-negative breast xenograft in mice. J Chem Neuroanat 2022; 124:102133. [PMID: 35777527 DOI: 10.1016/j.jchemneu.2022.102133] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2022] [Revised: 06/26/2022] [Accepted: 06/26/2022] [Indexed: 10/17/2022]
Abstract
PURPOSE The aim of this study was to investigate the anti-tumor effect of electroacupuncture (EA) on mice bearing breast tumors by regulating p75 neurotrophin receptor (p75NTR) and remodelling intratumoral innervation. METHODS Female BALB/c mice were implanted with 4T1 breast tumor cells to establish a murine mammary cancer model. Tumor volume and weight were measured to evaluate tumor growth. Cell apoptosis was assessed by TUNEL assay. The relative expression of p75NTR, TrkA, TrkB, NGF and proNGF were detected by immunohistochemistry. Neurotransmitter and neurotrophin were detected by enzyme-linked immunosorbent assay. Intratumoral innervation was confirmed by β3-tubulin and TH labeling immunohistochemistry. The antagonist TAT-Pep5 was employed to determine if the effects of EA on tumor growth and cell apoptosis were mediated by p75NTR. RESULTS Peritumoral EA alleviated tumor growth especially after 14 days of intervention. Apoptosis index in the tumor tissue was obviously decreased after EA. Meanwhile, EA intervention significantly upregulated the expression of p75NTR and proNGF, along with a decline in the tumor growth and an increase in the cell apoptosis. Besides, EA reduced local sympathetic innervation and downregulated sympathetic neurotransmitter NE level in the local tumor. Furthermore, p75NTR antagonist alleviated EA-mediated cell apoptosis and intratumoral innervation. CONCLUSIONS One mechanism of EA intervention for alleviating tumor progression is mediated by p75NTR to promote apoptosis and decrease intratumoral axonogenesis in the tumor microenvironment.
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NGF Modulates Cholesterol Metabolism and Stimulates ApoE Secretion in Glial Cells Conferring Neuroprotection against Oxidative Stress. Int J Mol Sci 2022; 23:ijms23094842. [PMID: 35563230 PMCID: PMC9100774 DOI: 10.3390/ijms23094842] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2022] [Revised: 04/24/2022] [Accepted: 04/25/2022] [Indexed: 12/18/2022] Open
Abstract
Cholesterol plays a crucial role in the brain, where its metabolism is particularly regulated by astrocytic activity. Indeed, adult neurons suppress their own cholesterol biosynthesis and import this sterol through ApoE-rich particles secreted from astrocytes. Recent evidence suggests that nerve growth factor (NGF) may exert neurotrophic activity by influencing cell metabolism. Nevertheless, the effect of NGF on glial cholesterol homeostasis has still not been elucidated. Thus, the aim of this project is to assess whether NGF could influence cholesterol metabolism in glial cells. To reach this objective, the U373 astrocyte-derived cell line was used as an experimental model. Immunoblot and ELISA analysis showed that proteins and enzymes belonging to the cholesterol metabolism network were increased upon NGF treatment in glial cells. Furthermore, NGF significantly increased ApoE secretion and the amount of extracellular cholesterol in the culture medium. Co-culture and U373-conditioned medium experiments demonstrated that NGF treatment efficiently counteracted rotenone-mediated cytotoxicity in N1E-115 neuronal cells. Conversely, neuroprotection mediated by NGF treatment was suppressed when N1E-115 were co-cultured with ApoE-silenced U373 cells. Taken together, these data suggest that NGF controls cholesterol homeostasis in glial cells. More importantly, NGF exerts neuroprotection against oxidative stress, which is likely associated with the induction of glial ApoE secretion.
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8
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Barabás K, Kobolák J, Godó S, Kovács T, Ernszt D, Kecskés M, Varga C, Jánosi TZ, Fujiwara T, Kusumi A, Téglási A, Dinnyés A, Ábrahám IM. Live-Cell Imaging of Single Neurotrophin Receptor Molecules on Human Neurons in Alzheimer's Disease. Int J Mol Sci 2021; 22:ijms222413260. [PMID: 34948057 PMCID: PMC8708879 DOI: 10.3390/ijms222413260] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2021] [Revised: 12/03/2021] [Accepted: 12/07/2021] [Indexed: 11/16/2022] Open
Abstract
Neurotrophin receptors such as the tropomyosin receptor kinase A receptor (TrkA) and the low-affinity binding p75 neurotrophin receptor p75NTR play a critical role in neuronal survival and their functions are altered in Alzheimer’s disease (AD). Changes in the dynamics of receptors on the plasma membrane are essential to receptor function. However, whether receptor dynamics are affected in different pathophysiological conditions is unexplored. Using live-cell single-molecule imaging, we examined the surface trafficking of TrkA and p75NTR molecules on live neurons that were derived from human-induced pluripotent stem cells (hiPSCs) of presenilin 1 (PSEN1) mutant familial AD (fAD) patients and non-demented control subjects. Our results show that the surface movement of TrkA and p75NTR and the activation of TrkA- and p75NTR-related phosphoinositide-3-kinase (PI3K)/serine/threonine-protein kinase (AKT) signaling pathways are altered in neurons that are derived from patients suffering from fAD compared to controls. These results provide evidence for altered surface movement of receptors in AD and highlight the importance of investigating receptor dynamics in disease conditions. Uncovering these mechanisms might enable novel therapies for AD.
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Affiliation(s)
- Klaudia Barabás
- NAP Molecular Neuroendocrinology Research Group, Institute of Physiology, Medical School, Centre for Neuroscience, Szentágothai Research Institute, University of Pécs, 7624 Pécs, Hungary; (K.B.); (S.G.); (T.K.); (D.E.); (T.Z.J.); (I.M.Á.)
| | | | - Soma Godó
- NAP Molecular Neuroendocrinology Research Group, Institute of Physiology, Medical School, Centre for Neuroscience, Szentágothai Research Institute, University of Pécs, 7624 Pécs, Hungary; (K.B.); (S.G.); (T.K.); (D.E.); (T.Z.J.); (I.M.Á.)
| | - Tamás Kovács
- NAP Molecular Neuroendocrinology Research Group, Institute of Physiology, Medical School, Centre for Neuroscience, Szentágothai Research Institute, University of Pécs, 7624 Pécs, Hungary; (K.B.); (S.G.); (T.K.); (D.E.); (T.Z.J.); (I.M.Á.)
| | - Dávid Ernszt
- NAP Molecular Neuroendocrinology Research Group, Institute of Physiology, Medical School, Centre for Neuroscience, Szentágothai Research Institute, University of Pécs, 7624 Pécs, Hungary; (K.B.); (S.G.); (T.K.); (D.E.); (T.Z.J.); (I.M.Á.)
| | - Miklós Kecskés
- NAP-B Cortical Microcircuits Research Group, Institute of Physiology, Medical School, Centre for Neuroscience, Szentágothai Research Institute, 7624 Pécs, Hungary; (M.K.); (C.V.)
| | - Csaba Varga
- NAP-B Cortical Microcircuits Research Group, Institute of Physiology, Medical School, Centre for Neuroscience, Szentágothai Research Institute, 7624 Pécs, Hungary; (M.K.); (C.V.)
| | - Tibor Z. Jánosi
- NAP Molecular Neuroendocrinology Research Group, Institute of Physiology, Medical School, Centre for Neuroscience, Szentágothai Research Institute, University of Pécs, 7624 Pécs, Hungary; (K.B.); (S.G.); (T.K.); (D.E.); (T.Z.J.); (I.M.Á.)
| | - Takahiro Fujiwara
- Institute for Integrated Cell-Material Sciences (WPI-iCeMS), Kyoto University, Kyoto 606-8501, Japan;
| | - Akihiro Kusumi
- Membrane Cooperativity Unit, Okinawa Institute of Science and Technology Graduate University (OIST), Onna 904-0495, Japan;
| | | | - András Dinnyés
- BioTalentum Ltd., 2100 Gödöllő, Hungary; (J.K.); (A.T.)
- Correspondence:
| | - István M. Ábrahám
- NAP Molecular Neuroendocrinology Research Group, Institute of Physiology, Medical School, Centre for Neuroscience, Szentágothai Research Institute, University of Pécs, 7624 Pécs, Hungary; (K.B.); (S.G.); (T.K.); (D.E.); (T.Z.J.); (I.M.Á.)
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9
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Mossa A, Cammisotto PG, Velasquez-Flores M, Campeau L. Adaptation to partial urethral obstruction in healthy aging LOU rats and the role of nerve growth factor signaling pathway in the bladder. Exp Gerontol 2021; 157:111625. [PMID: 34780930 DOI: 10.1016/j.exger.2021.111625] [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: 06/14/2021] [Revised: 10/14/2021] [Accepted: 11/07/2021] [Indexed: 11/04/2022]
Abstract
AIM Aging is associated with poor ability to adapt to stress and abnormal nerve growth factor (NGF) profile. Lower urinary tract symptoms frequently disturb the quality of life of the aging population with no optimal treatment for both genders. The aim of the study was to compare the bladder response to bladder outflow obstruction in young and old LOU rats, a model of healthy aging that does not develop insulin resistance, and its relation to proNGF/NGF imbalance. METHODS 6- and 36-month-old female LOU rats were subjected to partial bladder urethral obstruction (PUO) for 2 weeks. Morphometric parameters (body and bladder weight) and glycemia were evaluated. Cystometry was carried out to measure functional parameters followed by ex vivo assessment of muscle strip contractile characteristics. Tissue proteins were examined by immunoblotting and morphology was examined by microscopy. RESULTS Body weight and glycaemia were not affected by surgery. PUO increases significantly bladder weight with increased thickness and fibrosis of the bladder wall as revealed by histological examination in both age groups. Cystometry showed that old PUO rats had a significant reduction in the intercontraction interval and the bladder capacity, a pattern opposite to young rats with PUO. Contractile properties of bladder strip were not affected by age or PUO. On the molecular level, the old rats had lower abundance of the mature NGF relative to proNGF, with signs of p75NTR activation suggested by the higher expression of TNF-α and JNK phosphorylation in the bladder tissue. CONCLUSION Bladder adaptation to PUO occurs only in young LOU rats to maintain efficient bladder contractility. Old LOU rats display proNGF/NGF imbalance and the associated p75NTR activation. This can further induce tissue damage and degeneration through activation of JNK pathway and release of TNF-α which in turn interferes with the necessary bladder adaptation.
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Affiliation(s)
- Abubakr Mossa
- Lady Davis Institute, McGill University, Montreal, Quebec, Canada
| | | | | | - Lysanne Campeau
- Lady Davis Institute, McGill University, Montreal, Quebec, Canada; Division of Urology, Department of Surgery, McGill University, Montreal, Quebec, Canada.
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10
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Busquets O, Parcerisas A, Verdaguer E, Ettcheto M, Camins A, Beas-Zarate C, Castro-Torres RD, Auladell C. c-Jun N-Terminal Kinases in Alzheimer's Disease: A Possible Target for the Modulation of the Earliest Alterations. J Alzheimers Dis 2021; 82:S127-S139. [PMID: 33216036 DOI: 10.3233/jad-201053] [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] [Indexed: 12/22/2022]
Abstract
Given the highly multifactorial origin of Alzheimer's disease (AD) neuropathology, disentangling and orderly knowing mechanisms involved in sporadic onset are arduous. Nevertheless, when the elements involved are dissected into smaller pieces, the task becomes more accessible. This review aimed to describe the link between c-Jun N-terminal Kinases (JNKs), master regulators of many cellular functions, and the early alterations of AD: synaptic loss and dysregulation of neuronal transport. Both processes have a role in the posterior cognitive decline observed in AD. The manuscript focuses on the molecular mechanisms of glutamatergic, GABA, and cholinergic synapses altered by the presence of amyloid-β aggregates and hyperphosphorylated tau, as well as on several consequences of the disruption of cellular processes linked to neuronal transport that is controlled by the JNK-JIP (c-jun NH2-terminal kinase (JNK)-interacting proteins (JIPs) complex, including the transport of AβPP or autophagosomes.
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Affiliation(s)
- Oriol Busquets
- Department of Pharmacology, Toxicology and Therapeutic Chemistry; Pharmacy and Food Sciences Faculty, Universitat de Barcelona, Barcelona, Spain.,Department of Biochemistry and Biotechnology, Medicine and Health Sciences Faculty, Universitat Rovira i Virgili, Reus, Spain.,Centre for Biomedical Research of Neurodegenerative Diseases (CIBERNED), Instituto de Salud Carlos III, Madrid, Spain.,Institut de Neurociències, Universitat de Barcelona, Barcelona, Spain.,Dominick P. Purpura Department of Neurosciences, Albert Einstein College of Medicine, New York City, NY, USA
| | - Antoni Parcerisas
- Centre for Biomedical Research of Neurodegenerative Diseases (CIBERNED), Instituto de Salud Carlos III, Madrid, Spain.,Institut de Neurociències, Universitat de Barcelona, Barcelona, Spain.,Department of Cell Biology, Physiology and Immunology, Biology Faculty, Universitat de Barcelona, Barcelona, Spain
| | - Ester Verdaguer
- Centre for Biomedical Research of Neurodegenerative Diseases (CIBERNED), Instituto de Salud Carlos III, Madrid, Spain.,Institut de Neurociències, Universitat de Barcelona, Barcelona, Spain.,Department of Cell Biology, Physiology and Immunology, Biology Faculty, Universitat de Barcelona, Barcelona, Spain
| | - Miren Ettcheto
- Department of Pharmacology, Toxicology and Therapeutic Chemistry; Pharmacy and Food Sciences Faculty, Universitat de Barcelona, Barcelona, Spain.,Centre for Biomedical Research of Neurodegenerative Diseases (CIBERNED), Instituto de Salud Carlos III, Madrid, Spain.,Institut de Neurociències, Universitat de Barcelona, Barcelona, Spain
| | - Antoni Camins
- Department of Pharmacology, Toxicology and Therapeutic Chemistry; Pharmacy and Food Sciences Faculty, Universitat de Barcelona, Barcelona, Spain.,Centre for Biomedical Research of Neurodegenerative Diseases (CIBERNED), Instituto de Salud Carlos III, Madrid, Spain.,Institut de Neurociències, Universitat de Barcelona, Barcelona, Spain
| | - Carlos Beas-Zarate
- Department of Cell and Molecular Biology, Laboratory of Neural Regeneration, C.U.C.B.A., Universidad de Guadalajara, Jalisco, Mexico
| | - Rubén Darío Castro-Torres
- Department of Cell and Molecular Biology, Laboratory of Biology of Neurotransmission, C.U.C.B.A., Universidad de Guadalajara, Jalisco, Mexico
| | - Carme Auladell
- Centre for Biomedical Research of Neurodegenerative Diseases (CIBERNED), Instituto de Salud Carlos III, Madrid, Spain.,Institut de Neurociències, Universitat de Barcelona, Barcelona, Spain.,Department of Cell Biology, Physiology and Immunology, Biology Faculty, Universitat de Barcelona, Barcelona, Spain
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H 2S protects hippocampal neurons against hypoxia-reoxygenation injury by promoting RhoA phosphorylation at Ser188. Cell Death Discov 2021; 7:132. [PMID: 34088899 PMCID: PMC8178328 DOI: 10.1038/s41420-021-00514-z] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2021] [Revised: 04/12/2021] [Accepted: 05/01/2021] [Indexed: 12/11/2022] Open
Abstract
Inhibition of RhoA-ROCK pathway is involved in the H2S-induced cerebral vasodilatation and H2S-mediated protection on endothelial cells against oxygen-glucose deprivation/reoxygenation injury. However, the inhibitory mechanism of H2S on RhoA-ROCK pathway is still unclear. The aim of this study was to investigate the target and mechanism of H2S in inhibition of RhoA/ROCK. GST-RhoAwild and GST-RhoAS188A proteins were constructed and expressed, and were used for phosphorylation assay in vitro. Recombinant RhoAwild-pEGFP-N1 and RhoAS188A-pEGFP-N1 plasmids were constructed and transfected into primary hippocampal nerve cells (HNCs) to evaluate the neuroprotective mechanism of endothelial H2S by using transwell co-culture system with endothelial cells from cystathionine-γ-lyase knockout (CSE-/-) mice and 3-mercaptopyruvate sulfurtransferase knockout (3-MST-/-) rats, respectively. We found that NaHS, exogenous H2S donor, promoted RhoA phosphorylation at Ser188 in the presence of cGMP-dependent protein kinase 1 (PKG1) in vitro. Besides, both exogenous and endothelial H2S facilitated the RhoA phosphorylation at Ser188 in HNCs, which induced the reduction of RhoA activity and membrane transposition, as well as ROCK2 activity and expression. To further investigate the role of endothelial H2S on RhoA phosphorylation, we detected H2S release from ECs of CSE+/+ and CSE-/- mice, and 3-MST+/+ and 3-MST-/- rats, respectively, and found that H2S produced by ECs in the culture medium is mainly catalyzed by CSE synthase. Moreover, we revealed that both endothelial H2S, mainly catalyzed by CSE, and exogenous H2S protected the HNCs against hypoxia-reoxygenation injury via phosphorylating RhoA at Ser188.
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Mossa AH, Abdaem J, Cammisotto P, Campeau L. Deleterious impact of nerve growth factor precursor (proNGF) on bladder urothelial and smooth muscle cells. Cell Signal 2021; 81:109936. [PMID: 33529756 DOI: 10.1016/j.cellsig.2021.109936] [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] [Received: 11/10/2020] [Revised: 01/28/2021] [Accepted: 01/28/2021] [Indexed: 12/21/2022]
Abstract
The nerve growth factor precursor (proNGF) activates p75NTR receptor and promotes cell death in different tissues, yet this pathophysiological effect is not fully described in the bladder. The aim of this study was to identify the biological effect of proNGF/p75NTR activation on urothelial and smooth muscle (SM) cells of rodents' bladder. Cell viability was assessed by MTT assay which showed a significant reduction in urothelial viability after 24 h of incubation with proNGF in culture medium [5 or 10 nM], an effect not seen in SM cells. Western blot analysis on cellular protein extracts showed increased expression of the transmembrane TNF-α and activation of RhoA in urothelial cells exposed to proNGF with no evidence of a nuclear translocation of NF-κB assessed by western blotting on nuclear extracts and immunofluorescence. The activation of p75NTR-death domain related pathways in urothelial cells such as TNF-α or RhoA had a downstream effect on NO release and the junctional protein occludin, as estimated respectively by colorimetric and western blotting. On the other hand, proNGF did not induce TNF-α or RhoA expression in SM cells, but induced a significant NF-κB nuclear translocation. ProNGF had a different impact on SM as evidenced by a significant dose- and time-dependent increase in SM proliferation and migration examined by MTT test and cell migration assay. Together, our results indicate that activation of proNGF/p75NTR axis induces degenerative changes to the urothelial layer impacting its barrier and signaling integrity, while promoting adaptive proliferative changes in detrusor SM cells that can interfere with the contractile phenotype essential for proper bladder function.
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Affiliation(s)
- Abubakr H Mossa
- Lady Davis Institute, McGill University, 3755, Chemin de la cote-Ste-Catherine, Montreal, QC H3T 1E2, Canada
| | - Jacob Abdaem
- School of Medicine, McGill University, 3605 Rue de la Montagne, Montréal, QC H3G 2M1, Canada
| | - Philippe Cammisotto
- Lady Davis Institute, McGill University, 3755, Chemin de la cote-Ste-Catherine, Montreal, QC H3T 1E2, Canada
| | - Lysanne Campeau
- Lady Davis Institute, McGill University, 3755, Chemin de la cote-Ste-Catherine, Montreal, QC H3T 1E2, Canada; Urology Department, Jewish General Hospital, 3755, Chemin de la cote-Ste-Catherine, Montreal, QC H3T 1E2, Canada.
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Wang Z, Wu J, Hu Z, Luo C, Wang P, Zhang Y, Li H. Dexmedetomidine Alleviates Lipopolysaccharide-Induced Acute Kidney Injury by Inhibiting p75NTR-Mediated Oxidative Stress and Apoptosis. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2020; 2020:5454210. [PMID: 33194004 PMCID: PMC7648709 DOI: 10.1155/2020/5454210] [Citation(s) in RCA: 37] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/13/2020] [Revised: 07/22/2020] [Accepted: 10/07/2020] [Indexed: 02/07/2023]
Abstract
Oxidative stress and apoptosis play a key role in the pathogenesis of sepsis-associated acute kidney injury (AKI). Dexmedetomidine (DEX) may present renal protective effects in sepsis. Therefore, we studied antioxidant effects and the mechanism of DEX in an inflammatory proximal tubular epithelial cell model and lipopolysaccharide- (LPS-) induced AKI in mice. Methods. We assessed renal function (creatinine, urea nitrogen), histopathology, oxidative stress (malondialdehyde (MDA) and superoxide dismutase (SOD)), and apoptosis (TUNEL staining and Cleaved caspase-3) in mice. In vitro experiments including Cleaved caspase-3 and p75NTR/p38MAPK/JNK signaling pathways were evaluated using western blot. Reactive oxidative species (ROS) production and apoptosis were determined using flow cytometry. Results. DEX significantly improved renal function and kidney injury and also revert the substantially increased level of MDA concentrations as well as the reduction of the SOD enzyme activity found in LPS-induced AKI mice. In parallel, DEX treatment also reduced the apoptosis and Cleaved caspase-3 expression evoked by LPS. The expression of p75NTR was increased in kidney tissues of mice with AKI but decreased after treatment with DEX. In cultured human renal tubular epithelial cell line (HK-2 cells), DEX inhibited LPS-induced apoptosis and generation of ROS, but this was reversed by overexpression of p75NTR. Furthermore, pretreatment with DEX significantly downregulated phosphorylation of JNK and p38MAPK in LPS-stimulated HK-2 cells, and this effect was abolished by overexpression of p75NTR. Conclusion. DEX ameliorated AKI in mice with sepsis by partially reducing oxidative stress and apoptosis through regulation of p75NTR/p38MAPK/JNK signaling pathways.
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Affiliation(s)
- Zhe Wang
- Department of Anesthesiology, The Second Xiangya Hospital, Central South University, Changsha, China
| | - Jiali Wu
- Department of Laboratory Medicine, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
| | - Zhaolan Hu
- Department of Anesthesiology, The Second Xiangya Hospital, Central South University, Changsha, China
| | - Cong Luo
- Department of Anesthesiology, The Second Xiangya Hospital, Central South University, Changsha, China
| | - Pengfei Wang
- Department of Anesthesiology, The Second Xiangya Hospital, Central South University, Changsha, China
| | - Yanling Zhang
- Department of Anesthesiology, The Second Xiangya Hospital, Central South University, Changsha, China
| | - Hui Li
- Department of Anesthesiology, The Second Xiangya Hospital, Central South University, Changsha, China
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