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Activation of UCP2 by anethole trithione suppresses neuroinflammation after intracerebral hemorrhage. Acta Pharmacol Sin 2022; 43:811-828. [PMID: 34183754 PMCID: PMC8976076 DOI: 10.1038/s41401-021-00698-1] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2020] [Accepted: 05/14/2021] [Indexed: 02/06/2023] Open
Abstract
Intracerebral hemorrhage (ICH) is a devastating disease, in which neuroinflammation substantially contributes to brain injury. Uncoupling protein 2 (UCP2) is a member of the mitochondrial anion carrier family, which uncouples oxidative phosphorylation from ATP synthesis by facilitating proton leak across the mitochondrial inner membrane. UCP2 has been reported to modulate inflammation. In this study we investigated whether and how UCP2 modulated neuroinflammation through microglia/macrophages following ICH in vitro and in vivo. We used an in vitro neuroinflammation model in murine BV2 microglia to mimic microglial activation following ICH. ICH in vivo model was established in mice through collagenase infusion into the left striatum. ICH mice were treated with anetholetrithione (ADT, 50 mg· kg-1 ·d-1, ip) or the classical protonophoric uncoupler FCCP (injected into hemorrhagic striatum). We showed that the expression and mitochondrial location of microglial UCP2 were not changed in both in vitro and in vivo ICH models. Knockdown of UCP2 exacerbated neuroinflammation in BV2 microglia and mouse ICH models, suggesting that endogenous UCP2 inhibited neuroinflammation and therefore played a protective role following ICH. ADT enhanced mitochondrial ROS production thus inducing mitochondrial uncoupling and activating UCP2 in microglia. ADT robustly suppressed neuroinflammation, attenuated brain edema and improved neurological deficits following ICH, and these effects were countered by striatal knockdown of UCP2. ADT enhanced AMP-activated protein kinase (AMPK) activation in the hemorrhagic brain, which was abrogated by striatal knockdown of UCP2. Moreover, striatal knockdown of AMPK abolished the suppression of neuroinflammation by ADT following ICH. On the other hand, FCCP-induced mitochondrial uncoupling was independent of UCP2 in microglia; and striatal knockdown of UCP2 did not abrogate the suppression of neuroinflammation by FCCP in ICH mice. In conclusion, the uncoupling activity is essential for suppression of neuroinflammation by UCP2. We prove for the first time the concept that activators of endogenous UCP2 such as anetholetrithione are a new class of uncouplers with translational significance.
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DJ-1 inhibits microglial activation and protects dopaminergic neurons in vitro and in vivo through interacting with microglial p65. Cell Death Dis 2021; 12:715. [PMID: 34274951 PMCID: PMC8286256 DOI: 10.1038/s41419-021-04002-1] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2021] [Revised: 07/05/2021] [Accepted: 07/06/2021] [Indexed: 02/06/2023]
Abstract
Parkinson's disease (PD), one of the most common neurodegenerative disorders, is characterized by progressive neurodegeneration of dopaminergic (DA) neurons in the substantia nigra pars compacta (SNpc). DJ-1 acts essential roles in neuronal protection and anti-neuroinflammatory response, and its loss of function is tightly associated with a familial recessive form of PD. However, the molecular mechanism of DJ-1 involved in neuroinflammation is largely unclear. Here, we found that wild-type DJ-1, rather than the pathogenic L166P mutant DJ-1, directly binds to the subunit p65 of nuclear factor-κB (NF-κB) in the cytoplasm, and loss of DJ-1 promotes p65 nuclear translocation by facilitating the dissociation between p65 and NF-κB inhibitor α (IκBα). DJ-1 knockout (DJ-1-/-) mice exhibit more microglial activation compared with wild-type littermate controls, especially in response to lipopolysaccharide (LPS) treatment. In cellular models, knockdown of DJ-1 significantly upregulates the gene expression and increases the release of LPS-treated inflammatory cytokines in primary microglia and BV2 cells. Furthermore, DJ-1 deficiency in microglia significantly enhances the neuronal toxicity in response to LPS stimulus. In addition, pharmacological blockage of NF-κB nuclear translocation by SN-50 prevents microglial activation and alleviates the damage of DA neurons induced by microglial DJ-1 deficiency in vivo and in vitro. Thus, our data illustrate a novel mechanism by which DJ-1 facilitates the interaction between IκBα and p65 by binding to p65 in microglia, and thus repressing microglial activation and exhibiting the protection of DA neurons from neuroinflammation-mediated injury in PD.
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Discovery of N-phenyl-1-(phenylsulfonamido)cyclopropane-1-carboxamide analogs as NLRP3 inflammasome inhibitors. Med Chem Res 2021. [DOI: 10.1007/s00044-021-02740-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Zhang R, Liu X, Li Y, Wang M, Chen L, Hu B. Suppression of Inflammation Delays Hair Cell Regeneration and Functional Recovery Following Lateral Line Damage in Zebrafish Larvae. Biomolecules 2020; 10:biom10101451. [PMID: 33081293 PMCID: PMC7650643 DOI: 10.3390/biom10101451] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2020] [Revised: 10/08/2020] [Accepted: 10/13/2020] [Indexed: 12/18/2022] Open
Abstract
Cochlear hair cells in human beings cannot regenerate after loss; however, those in fish and other lower species can. Recently, the role of inflammation in hair cell regeneration has been attracting the attention of scientists. In the present study, we investigated how suppression of inflammatory factors affects hair cell regeneration and the functional recovery of regenerated hair cells in zebrafish. We killed hair cells in the lateral line of zebrafish larvae with CuSO4 to induce an inflammatory response and coapplied BRS-28, an anti-inflammatory agent to suppress the inflammation. The recovery of the hair cell number and rheotaxis was slower when CuSO4 and BRS-28 were coapplied than when CuSO4 was applied alone. The recovery of hair cell count lagged behind that of the calcium imaging signal during the regeneration. The calcium imaging signal in the neuromasts in the inflammation-inhibited group was weaker than that in the noninflammation-inhibited group at the early stage of regeneration, although it returned to normal at the late stage. Our study demonstrates that suppressing inflammation by BRS-28 delays hair cell regeneration and functional recovery when hair cells are damaged. We suspect that BRS-28 inhibits pro-inflammatory factors and thereby reduces the migration of macrophages to delay the regeneration of hair cells.
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Affiliation(s)
- Ru Zhang
- Hefei National Laboratory for Physical Sciences at the Microscale, CAS Key Laboratory of Brain Function and Disease, School of Life Sciences, Division of Biomedical Sciences, University of Science and Technology of China, Hefei 230027, China; (R.Z.); (M.W.)
- Laboratory of Neurodevelopment and Repair, University of Science and Technology of China, Hefei 230027, China;
| | - Xiaopeng Liu
- Center for Hearing and Deafness, State University of New York at Buffalo, Buffalo, NY 14214, USA;
| | - Yajuan Li
- Laboratory of Neurodevelopment and Repair, University of Science and Technology of China, Hefei 230027, China;
| | - Ming Wang
- Hefei National Laboratory for Physical Sciences at the Microscale, CAS Key Laboratory of Brain Function and Disease, School of Life Sciences, Division of Biomedical Sciences, University of Science and Technology of China, Hefei 230027, China; (R.Z.); (M.W.)
- Auditory Research Laboratory, University of Science and Technology of China, Hefei 230027, China
| | - Lin Chen
- Hefei National Laboratory for Physical Sciences at the Microscale, CAS Key Laboratory of Brain Function and Disease, School of Life Sciences, Division of Biomedical Sciences, University of Science and Technology of China, Hefei 230027, China; (R.Z.); (M.W.)
- Auditory Research Laboratory, University of Science and Technology of China, Hefei 230027, China
- Correspondence: (L.C.); (B.H.); Tel.: +86-(551)-6360-7623 (L.C.); +86 (551)-6360-2489 (B.H.)
| | - Bing Hu
- Hefei National Laboratory for Physical Sciences at the Microscale, CAS Key Laboratory of Brain Function and Disease, School of Life Sciences, Division of Biomedical Sciences, University of Science and Technology of China, Hefei 230027, China; (R.Z.); (M.W.)
- Laboratory of Neurodevelopment and Repair, University of Science and Technology of China, Hefei 230027, China;
- Correspondence: (L.C.); (B.H.); Tel.: +86-(551)-6360-7623 (L.C.); +86 (551)-6360-2489 (B.H.)
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5
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Recent advances in dopaminergic strategies for the treatment of Parkinson's disease. Acta Pharmacol Sin 2020; 41:471-482. [PMID: 32112042 PMCID: PMC7471472 DOI: 10.1038/s41401-020-0365-y] [Citation(s) in RCA: 40] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2019] [Accepted: 01/13/2020] [Indexed: 12/19/2022] Open
Abstract
Parkinson's disease (PD) is the second most common progressive neurodegenerative disease worldwide. However, there is no available therapy reversing the neurodegenerative process of PD. Based on the loss of dopamine or dopaminergic dysfunction in PD patients, most of the current therapies focus on symptomatic relief to improve patient quality of life. As dopamine replacement treatment remains the most effective symptomatic pharmacotherapy for PD, herein we provide an overview of the current pharmacotherapies, summarize the clinical development status of novel dopaminergic agents, and highlight the challenge and opportunity of emerging preclinical dopaminergic approaches aimed at managing the features and progression of PD.
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Özdemir Z, Bildziukevich U, Šaman D, Havlíček L, Rárová L, Navrátilová L, Wimmer Z. Amphiphilic derivatives of (3β,17β)-3-hydroxyandrost-5-ene-17-carboxylic acid. Steroids 2017; 128:58-67. [PMID: 29100780 DOI: 10.1016/j.steroids.2017.10.011] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/27/2016] [Accepted: 10/26/2017] [Indexed: 01/09/2023]
Abstract
A series of amphiphilic derivatives of (3β,17β)-3-hydroxyandrost-5-ene-17-carboxylic acid (1) with the polyamine spermine and three other diamines, 1,2-diaminoethane, piperazine and cadaverine, were synthesized and their antimicrobial activity and cytotoxicity were investigated. Among the target compounds, several ones showed antimicrobial activity on Gram positive and Gram negative microorganisms. The most active compounds were 20 (Streptococcus mutans CCM 7409, 3.125 µM), 16 (Streptococcus mutans CCM 7409, 12.5 µM) and 10d (Escherichia coli CCM 3954, 12.5 µM). In addition, compounds 5d, 10d, 13 and 20 displayed cytotoxicity on CEM (12.1 ± 2.1 µM, 7.6 ± 1.0 µM, 19.0 ± 0.4 µM and 5.9 ± 0.7 µM, respectively). Two additional compounds displayed medium cytotoxicity on CEM, 5a (34.6 ± 5.2 µM) and 5c (37.7 ± 5.9 µM). The compound 13 and 20 displayed high toxicity also on normal fibroblasts.
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Affiliation(s)
- Zülal Özdemir
- University of Chemistry and Technology, Prague, Department of Chemistry of Natural Compounds, Technická 5, 16628 Prague 6, Czech Republic; Institute of Experimental Botany AS CR, v.v.i., Isotope Laboratory, Vídeňská 1083, 14220 Prague 4, Czech Republic
| | - Uladzimir Bildziukevich
- University of Chemistry and Technology, Prague, Department of Chemistry of Natural Compounds, Technická 5, 16628 Prague 6, Czech Republic; Institute of Experimental Botany AS CR, v.v.i., Isotope Laboratory, Vídeňská 1083, 14220 Prague 4, Czech Republic
| | - David Šaman
- Institute of Organic Chemistry and Biochemistry AS CR, v.v.i., Flemingovo náměstí 2, 16610 Prague 6, Czech Republic
| | - Libor Havlíček
- Institute of Experimental Botany AS CR, v.v.i., Isotope Laboratory, Vídeňská 1083, 14220 Prague 4, Czech Republic
| | - Lucie Rárová
- Department of Chemical Biology and Genetics, Centre of the Region Haná for Biotechnological and Agricultural Research, Palacký University, Šlechtitelů 27, 78371 Olomouc, Czech Republic
| | - Lucie Navrátilová
- Department of Microbiology, Faculty of Medicine and Dentistry, Palacký University, Hněvotínská 3, 77515 Olomouc, Czech Republic
| | - Zdeněk Wimmer
- University of Chemistry and Technology, Prague, Department of Chemistry of Natural Compounds, Technická 5, 16628 Prague 6, Czech Republic; Institute of Experimental Botany AS CR, v.v.i., Isotope Laboratory, Vídeňská 1083, 14220 Prague 4, Czech Republic.
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Pan LL, Xu P, Luo XL, Wang LJ, Liu SY, Zhu YZ, Hu JF, Liu XH. Shizukaol B, an active sesquiterpene from Chloranthus henryi, attenuates LPS-induced inflammatory responses in BV2 microglial cells. Biomed Pharmacother 2017; 88:878-884. [PMID: 28178617 DOI: 10.1016/j.biopha.2017.01.152] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2016] [Revised: 01/26/2017] [Accepted: 01/26/2017] [Indexed: 12/21/2022] Open
Abstract
The objective of the current study was to evaluate the anti-inflammatory effects of shizukaol B, a lindenane-type dimeric sesquiterpene isolated from the whole plant of Chloranthus henryi, on lipopolysaccharide (LPS)-induced activation of BV2 microglial cells in vitro. Our data showed that shizukaol B concentration-dependently suppressed expression of inducible nitric oxide synthase (iNOS) and cyclooxygenase-2 (COX-2), production of nitric oxide (NO), tumor necrosis factor-α (TNF-α), and interleukin-1β (IL-1β) in LPS-stimulated BV2 microglia. Meanwhile, shizukaol B concentration- and time-dependently inhibited LPS-mediated c-Jun N-terminal kinase 1/2 (JNK) activation, but had little effect on extracellular signal-regulated kinase 1/2 or p38 phosphorylation. Furthermore, shizukaol B significantly blocked LPS-induced activator protein-1 (AP-1) activation, evidenced by reduced phosphorylation and nuclear translocation of c-Jun and DNA binding activity of AP-1. Taken together, our findings suggest that shizukaol B exerts anti-inflammatory effects in LPS-activated microglia partly by modulating JNK-AP-1 signaling pathway.
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Affiliation(s)
- Li-Long Pan
- Shanghai Key Laboratory of Bioactive Small Molecules, Department of Pharmacology, School of Pharmacy, Fudan University, Shanghai 201203, China
| | - Peng Xu
- Shanghai Key Laboratory of Bioactive Small Molecules, Department of Pharmacology, School of Pharmacy, Fudan University, Shanghai 201203, China
| | - Xiao-Ling Luo
- Shanghai Key Laboratory of Bioactive Small Molecules, Department of Pharmacology, School of Pharmacy, Fudan University, Shanghai 201203, China
| | - Li-Jun Wang
- Department of Natural Products Chemistry, School of Pharmacy, Fudan University, Shanghai 201203, China
| | - Si-Yu Liu
- Shanghai Key Laboratory of Bioactive Small Molecules, Department of Pharmacology, School of Pharmacy, Fudan University, Shanghai 201203, China
| | - Yi-Zhun Zhu
- Shanghai Key Laboratory of Bioactive Small Molecules, Department of Pharmacology, School of Pharmacy, Fudan University, Shanghai 201203, China
| | - Jin-Feng Hu
- Department of Natural Products Chemistry, School of Pharmacy, Fudan University, Shanghai 201203, China.
| | - Xin-Hua Liu
- Shanghai Key Laboratory of Bioactive Small Molecules, Department of Pharmacology, School of Pharmacy, Fudan University, Shanghai 201203, China.
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Chen H, Han C, Wu J, Liu X, Zhan Y, Chen J, Chen Y, Gu R, Zhang L, Chen S, Jia J, Zhen X, Zheng LT, Jiang B. Accessible Method for the Development of Novel Sterol Analogues with Dipeptide-like Side Chains That Act as Neuroinflammation Inhibitors. ACS Chem Neurosci 2016; 7:305-15. [PMID: 26815166 DOI: 10.1021/acschemneuro.5b00256] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023] Open
Abstract
A number of novel sterol derivatives with dipeptide-like side chains were synthesized using an Ugi four-component condensation method and assayed to test their anti-inflammatory effects in activated microglial cells. Compound 18b ((3S,10R,13S)-N-((R)-1-(tert-butylamino)-1-oxo-3-phenylpropan-2-yl)-3-hydroxy-N,10,13-trimethyl-2,3,4,7,8,9,10,11,12,13,14,15-dodecahydro-1H-cyclopenta[a]phenanthrene-17-carboxamide) was identified as the most potent anti-inflammatory agent in the series of compounds analyzed. Compound 18b markedly inhibited the expression of proinflammatory factors, including inducible nitric oxide synthase, interleukin (IL)-6, IL-1β, tumor necrosis factor-α, and cyclooxygenase-2 in lipopolysaccharide-stimulated microglial cells. Further studies showed that compound 18b significantly suppressed the transcriptional activity of AP-1 and NF-κB in activated microglial cells, which was likely mediated by the inhibition of the p38 MAPK and JNK signal transduction pathways. In addition, compound 18b displayed neuroprotective effects in a microglial-conditioned medium/neuron coculture and an experimental focal ischemic mouse model.
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Affiliation(s)
- Hongli Chen
- Shanghai
Institute for Advanced Immunochemical Studies, ShanghaiTech University, Shanghai 201210, China
| | - Chaojun Han
- Jiangsu
Key Laboratory of Translational Research and Therapy for Neuropsychiatric
Diseases and College of Pharmaceutical Sciences, Soochow University, Suzhou, Jiangsu 215021, China
| | - Jing Wu
- Jiangsu
Key Laboratory of Translational Research and Therapy for Neuropsychiatric
Diseases and College of Pharmaceutical Sciences, Soochow University, Suzhou, Jiangsu 215021, China
| | - Xiaoyu Liu
- Shanghai
Institute for Advanced Immunochemical Studies, ShanghaiTech University, Shanghai 201210, China
| | - Yuexiong Zhan
- Shanghai
Institute for Advanced Immunochemical Studies, ShanghaiTech University, Shanghai 201210, China
| | - Jiakang Chen
- Shanghai
Institute for Advanced Immunochemical Studies, ShanghaiTech University, Shanghai 201210, China
| | - Yanke Chen
- Jiangsu
Key Laboratory of Translational Research and Therapy for Neuropsychiatric
Diseases and College of Pharmaceutical Sciences, Soochow University, Suzhou, Jiangsu 215021, China
| | - Ruinan Gu
- Jiangsu
Key Laboratory of Translational Research and Therapy for Neuropsychiatric
Diseases and College of Pharmaceutical Sciences, Soochow University, Suzhou, Jiangsu 215021, China
| | - Li Zhang
- Jiangsu
Key Laboratory of Translational Research and Therapy for Neuropsychiatric
Diseases and College of Pharmaceutical Sciences, Soochow University, Suzhou, Jiangsu 215021, China
| | - Shuangshuang Chen
- Jiangsu
Key Laboratory of Translational Research and Therapy for Neuropsychiatric
Diseases and College of Pharmaceutical Sciences, Soochow University, Suzhou, Jiangsu 215021, China
| | - Jia Jia
- Jiangsu
Key Laboratory of Translational Research and Therapy for Neuropsychiatric
Diseases and College of Pharmaceutical Sciences, Soochow University, Suzhou, Jiangsu 215021, China
| | - Xuechu Zhen
- Jiangsu
Key Laboratory of Translational Research and Therapy for Neuropsychiatric
Diseases and College of Pharmaceutical Sciences, Soochow University, Suzhou, Jiangsu 215021, China
| | - Long Tai Zheng
- Jiangsu
Key Laboratory of Translational Research and Therapy for Neuropsychiatric
Diseases and College of Pharmaceutical Sciences, Soochow University, Suzhou, Jiangsu 215021, China
| | - Biao Jiang
- Shanghai
Institute for Advanced Immunochemical Studies, ShanghaiTech University, Shanghai 201210, China
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