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Mueller M, Peakin J, Lewis DJ. Practical Considerations for the Implementation and Monitoring of Risk Minimisation Measures for High-Risk Teratogenic Medicines. Pharmaceut Med 2023; 37:439-449. [PMID: 37594662 DOI: 10.1007/s40290-023-00496-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/24/2023] [Indexed: 08/19/2023]
Abstract
There is considerable societal interest in making medicines more affordable. A critical factor often inadequately considered early in the process of adding drugs to a company's product portfolio is that some products may require additional monitoring and complex, demanding and expensive additional risk minimisation measures (aRMMs). These aRMMs may have a sizeable impact on a company's commitment to that medicinal product throughout the product's entire life cycle. The teratogenic phthalimides were selected as an example of medicines that are recently being genericised and require a substantial commitment in terms of additional monitoring and aRMMs, most notably in the form of pregnancy prevention programmes (PPPs) with controlled distribution systems (CDSs). Implementing PPPs with CDSs is complex and demanding and encompasses all routine activities, aRMMs, local/regional Health Authority (HA) requirements, and commercialisation strategies. Considerations have been summarised that can support decision-making during due diligence processes, implementation and monitoring. Proactive, effective pharmacovigilance requires innovative, sustainable and flexible solutions to maintain high standards across the board. In particular, generic marketing authorisation holders operate with limited resources and may benefit appreciably from the following proposed suggestions and solutions such as early planning and preparation, knowledge-sharing, utilisation of new technologies and implementation of measures beyond HA-mandated requirements.
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Affiliation(s)
- Marion Mueller
- Safety Risk Detection and Management, Novartis Pharma AG, Basel, Switzerland.
| | - Joseph Peakin
- Novartis Knowledge Center, Novartis Ireland Limited, Dublin, Ireland
| | - David J Lewis
- Patient Safety and Pharmacovigilance, Global Drug Development, Novartis Pharma GmbH, Wehr, Germany
- Department of Pharmacy, Pharmacology and Postgraduate Medicine, University of Hertfordshire, Hatfield, Hertfordshire, AL10 9AB, UK
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Glotfelty EJ, Hsueh SC, Claybourne Q, Bedolla A, Kopp KO, Wallace T, Zheng B, Luo Y, Karlsson TE, McDevitt RA, Olson L, Greig NH. Microglial Nogo delays recovery following traumatic brain injury in mice. Glia 2023; 71:2473-2494. [PMID: 37401784 PMCID: PMC10528455 DOI: 10.1002/glia.24436] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2023] [Revised: 06/16/2023] [Accepted: 06/20/2023] [Indexed: 07/05/2023]
Abstract
Nogo-A, B, and C are well described members of the reticulon family of proteins, most well known for their negative regulatory effects on central nervous system (CNS) neurite outgrowth and repair following injury. Recent research indicates a relationship between Nogo-proteins and inflammation. Microglia, the brain's immune cells and inflammation-competent compartment, express Nogo protein, although specific roles of the Nogo in these cells is understudied. To examine inflammation-related effects of Nogo, we generated a microglial-specific inducible Nogo KO (MinoKO) mouse and challenged the mouse with a controlled cortical impact (CCI) traumatic brain injury (TBI). Histological analysis shows no difference in brain lesion sizes between MinoKO-CCI and Control-CCI mice, although MinoKO-CCI mice do not exhibit the levels of ipsilateral lateral ventricle enlargement as injury matched controls. Microglial Nogo-KO results in decreased lateral ventricle enlargement, microglial and astrocyte immunoreactivity, and increased microglial morphological complexity compared to injury matched controls, suggesting decreased tissue inflammation. Behaviorally, healthy MinoKO mice do not differ from control mice, but automated tracking of movement around the home cage and stereotypic behavior, such as grooming and eating (termed cage "activation"), following CCI is significantly elevated. Asymmetrical motor function, a deficit typical of unilaterally brain lesioned rodents, was not detected in CCI injured MinoKO mice, while the phenomenon was present in CCI injured controls 1-week post-injury. Overall, our studies show microglial Nogo as a negative regulator of recovery following brain injury. To date, this is the first evaluation of the roles microglial specific Nogo in a rodent injury model.
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Affiliation(s)
- Elliot J. Glotfelty
- Drug Design & Development Section, Translational Gerontology Branch, Intramural Research Program National Institute on Aging, NIH, Baltimore, MD 21224, USA
- Department of Neuroscience, Karolinska Institutet, Stockholm, Sweden
| | - Shih-Chang Hsueh
- Drug Design & Development Section, Translational Gerontology Branch, Intramural Research Program National Institute on Aging, NIH, Baltimore, MD 21224, USA
| | - Quia Claybourne
- Comparative Medicine Section, National Institute on Aging, NIH, Baltimore, Maryland 21224, USA
| | - Alicia Bedolla
- Department of Molecular Genetics and Biochemistry, College of Medicine, University of Cincinnati, Cincinnati, OH, USA
| | - Katherine O. Kopp
- Drug Design & Development Section, Translational Gerontology Branch, Intramural Research Program National Institute on Aging, NIH, Baltimore, MD 21224, USA
| | - Tonya Wallace
- Flow Cytometry Unit, National Institute on Aging, Baltimore, MD, USA
| | - Binhai Zheng
- Department of Neurosciences, School of Medicine, University of California San Diego, La Jolla, CA, USA
| | - Yu Luo
- Department of Molecular Genetics and Biochemistry, College of Medicine, University of Cincinnati, Cincinnati, OH, USA
| | | | - Ross A. McDevitt
- Comparative Medicine Section, National Institute on Aging, NIH, Baltimore, Maryland 21224, USA
| | - Lars Olson
- Department of Neuroscience, Karolinska Institutet, Stockholm, Sweden
| | - Nigel H. Greig
- Drug Design & Development Section, Translational Gerontology Branch, Intramural Research Program National Institute on Aging, NIH, Baltimore, MD 21224, USA
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Elkady H, El-Adl K, Sakr H, Abdelraheem AS, Eissa SI, El-Zahabi MA. Novel promising benzoxazole/benzothiazole-derived immunomodulatory agents: Design, synthesis, anticancer evaluation, and in silico ADMET analysis. Arch Pharm (Weinheim) 2023; 356:e2300097. [PMID: 37379240 DOI: 10.1002/ardp.202300097] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2023] [Revised: 06/10/2023] [Accepted: 06/12/2023] [Indexed: 06/30/2023]
Abstract
Eleven novel benzoxazole/benzothiazole-based thalidomide analogs were designed and synthesized to obtain new effective antitumor immunomodulatory agents. The synthesized compounds were evaluated for their cytotoxic activities against HepG-2, HCT-116, PC3, and MCF-7 cells. Generally, the open analogs with semicarbazide and thiosemicarbazide moieties (10, 13a-c, 14, and 17a,b) exhibited higher cytotoxic activities than derivatives with closed glutarimide moiety (8a-d). In particular, compound 13a (IC50 = 6.14, 5.79, 10.26, and 4.71 µM against HepG-2, HCT-116, PC3, and MCF-7, respectively) and 14 (IC50 = 7.93, 8.23, 12.37, and 5.43 µM, respectively) exhibited the highest anticancer activities against the four tested cell lines. The most active compounds 13a and 14 were further evaluated for their in vitro immunomodulatory activities on tumor necrosis factor-alpha (TNF-α), caspase-8 (CASP8), vascular endothelial growth factor (VEGF), and nuclear factor kappa-B p65 (NF-κB p65) in HCT-116 cells. Compounds 13a and 14 showed a remarkable and significant reduction in TNF-α. Furthermore, they showed significant elevation in CASP8 levels. Also, they significantly inhibited VEGF. In addition, compound 13a showed significant decreases in the level of NF-κB p65 while compound 14 demonstrated an insignificant decrease with respect to thalidomide. Moreover, our derivatives exhibited good in silico absorption, distribution, metabolism, elimination, toxicity (ADMET) profiles.
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Affiliation(s)
- Hazem Elkady
- Pharmaceutical Medicinal Chemistry and Drug Design Department, Faculty of Pharmacy (Boys), Al-Azhar University, Cairo, Egypt
| | - Khaled El-Adl
- Pharmaceutical Medicinal Chemistry and Drug Design Department, Faculty of Pharmacy (Boys), Al-Azhar University, Cairo, Egypt
- Pharmaceutical Chemistry Department, Faculty of Pharmacy, Heliopolis University for Sustainable Development, Cairo, Egypt
| | - Helmy Sakr
- Pharmaceutical Medicinal Chemistry and Drug Design Department, Faculty of Pharmacy (Boys), Al-Azhar University, Cairo, Egypt
| | - Adel S Abdelraheem
- Pharmaceutical Medicinal Chemistry and Drug Design Department, Faculty of Pharmacy (Boys), Al-Azhar University, Cairo, Egypt
| | - Sally I Eissa
- Pharmaceutical Medicinal Chemistry and Drug Design Department, Faculty of Pharmacy (Girls), Al-Azhar University, Cairo, Egypt
| | - Mohamed Ayman El-Zahabi
- Pharmaceutical Medicinal Chemistry and Drug Design Department, Faculty of Pharmacy (Boys), Al-Azhar University, Cairo, Egypt
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Glotfelty EJ, Tovar-Y-Romo LB, Hsueh SC, Tweedie D, Li Y, Harvey BK, Hoffer BJ, Karlsson TE, Olson L, Greig NH. The RhoA-ROCK1/ROCK2 Pathway Exacerbates Inflammatory Signaling in Immortalized and Primary Microglia. Cells 2023; 12:1367. [PMID: 37408199 DOI: 10.3390/cells12101367] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2023] [Revised: 05/03/2023] [Accepted: 05/04/2023] [Indexed: 07/07/2023] Open
Abstract
Neuroinflammation is a unifying factor among all acute central nervous system (CNS) injuries and chronic neurodegenerative disorders. Here, we used immortalized microglial (IMG) cells and primary microglia (PMg) to understand the roles of the GTPase Ras homolog gene family member A (RhoA) and its downstream targets Rho-associated coiled-coil-containing protein kinases 1 and 2 (ROCK1 and ROCK2) in neuroinflammation. We used a pan-kinase inhibitor (Y27632) and a ROCK1- and ROCK2-specific inhibitor (RKI1447) to mitigate a lipopolysaccharide (LPS) challenge. In both the IMG cells and PMg, each drug significantly inhibited pro-inflammatory protein production detected in media (TNF-α, IL-6, KC/GRO, and IL-12p70). In the IMG cells, this resulted from the inhibition of NF-κB nuclear translocation and the blocking of neuroinflammatory gene transcription (iNOS, TNF-α, and IL-6). Additionally, we demonstrated the ability of both compounds to block the dephosphorylation and activation of cofilin. In the IMG cells, RhoA activation with Nogo-P4 or narciclasine (Narc) exacerbated the inflammatory response to the LPS challenge. We utilized a siRNA approach to differentiate ROCK1 and ROCK2 activity during the LPS challenges and showed that the blockade of both proteins may mediate the anti-inflammatory effects of Y27632 and RKI1447. Using previously published data, we show that genes in the RhoA/ROCK signaling cascade are highly upregulated in the neurodegenerative microglia (MGnD) from APP/PS-1 transgenic Alzheimer's disease (AD) mice. In addition to illuminating the specific roles of RhoA/ROCK signaling in neuroinflammation, we demonstrate the utility of using IMG cells as a model for primary microglia in cellular studies.
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Affiliation(s)
- Elliot J Glotfelty
- Drug Design & Development Section, Translational Gerontology Branch, Intramural Research Program National Institute on Aging, NIH, Baltimore, MD 21224, USA
- Department of Neuroscience, Karolinska Institutet, 171 77 Stockholm, Sweden
| | - Luis B Tovar-Y-Romo
- Division of Neuroscience, Institute of Cellular Physiology, Universidad Nacional Autónoma de México, Mexico City 04510, Mexico
| | - Shih-Chang Hsueh
- Drug Design & Development Section, Translational Gerontology Branch, Intramural Research Program National Institute on Aging, NIH, Baltimore, MD 21224, USA
| | - David Tweedie
- Drug Design & Development Section, Translational Gerontology Branch, Intramural Research Program National Institute on Aging, NIH, Baltimore, MD 21224, USA
| | - Yazhou Li
- Drug Design & Development Section, Translational Gerontology Branch, Intramural Research Program National Institute on Aging, NIH, Baltimore, MD 21224, USA
| | - Brandon K Harvey
- Molecular Mechanisms of Cellular Stress and Inflammation Unit, Integrative Neuroscience Department, National Institute on Drug Abuse, National Institutes of Health, Baltimore, MD 21224, USA
| | - Barry J Hoffer
- Department of Neurosurgery, Case Western Reserve University School of Medicine, Cleveland, OH 44106, USA
| | - Tobias E Karlsson
- Department of Neuroscience, Karolinska Institutet, 171 77 Stockholm, Sweden
| | - Lars Olson
- Department of Neuroscience, Karolinska Institutet, 171 77 Stockholm, Sweden
| | - Nigel H Greig
- Drug Design & Development Section, Translational Gerontology Branch, Intramural Research Program National Institute on Aging, NIH, Baltimore, MD 21224, USA
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Kopp KO, Greer ME, Glotfelty EJ, Hsueh SC, Tweedie D, Kim DS, Reale M, Vargesson N, Greig NH. A New Generation of IMiDs as Treatments for Neuroinflammatory and Neurodegenerative Disorders. Biomolecules 2023; 13:biom13050747. [PMID: 37238617 DOI: 10.3390/biom13050747] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2023] [Revised: 04/14/2023] [Accepted: 04/21/2023] [Indexed: 05/28/2023] Open
Abstract
The immunomodulatory imide drug (IMiD) class, which includes the founding drug member thalidomide and later generation drugs, lenalidomide and pomalidomide, has dramatically improved the clinical treatment of specific cancers, such as multiple myeloma, and it combines potent anticancer and anti-inflammatory actions. These actions, in large part, are mediated by IMiD binding to the human protein cereblon that forms a critical component of the E3 ubiquitin ligase complex. This complex ubiquitinates and thereby regulates the levels of multiple endogenous proteins. However, IMiD-cereblon binding modifies cereblon's normal targeted protein degradation towards a new set of neosubstrates that underlies the favorable pharmacological action of classical IMiDs, but also their adverse actions-in particular, their teratogenicity. The ability of classical IMiDs to reduce the synthesis of key proinflammatory cytokines, especially TNF-α levels, makes them potentially valuable to reposition as drugs to mitigate inflammatory-associated conditions and, particularly, neurological disorders driven by an excessive neuroinflammatory element, as occurs in traumatic brain injury, Alzheimer's and Parkinson's diseases, and ischemic stroke. The teratogenic and anticancer actions of classical IMiDs are substantial liabilities for effective drugs in these disorders and can theoretically be dialed out of the drug class. We review a select series of novel IMiDs designed to avoid binding with human cereblon and/or evade degradation of downstream neosubstrates considered to underpin the adverse actions of thalidomide-like drugs. These novel non-classical IMiDs hold potential as new medications for erythema nodosum leprosum (ENL), a painful inflammatory skin condition associated with Hansen's disease for which thalidomide remains widely used, and, in particular, as a new treatment strategy for neurodegenerative disorders in which neuroinflammation is a key component.
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Affiliation(s)
- Katherine O Kopp
- Drug Design & Development Section, Translational Gerontology Branch, Intramural Research Program National Institute on Aging, Biomedical Research Center, 251 Bayview Blvd., NIH, Baltimore, MD 21224, USA
| | - Margaret E Greer
- Drug Design & Development Section, Translational Gerontology Branch, Intramural Research Program National Institute on Aging, Biomedical Research Center, 251 Bayview Blvd., NIH, Baltimore, MD 21224, USA
- Faculty of Medicine, Georgetown University School of Medicine, Washington, DC 20007, USA
| | - Elliot J Glotfelty
- Drug Design & Development Section, Translational Gerontology Branch, Intramural Research Program National Institute on Aging, Biomedical Research Center, 251 Bayview Blvd., NIH, Baltimore, MD 21224, USA
- Department of Neuroscience, Karolinska Institutet, 17177 Stockholm, Sweden
| | - Shih-Chang Hsueh
- Drug Design & Development Section, Translational Gerontology Branch, Intramural Research Program National Institute on Aging, Biomedical Research Center, 251 Bayview Blvd., NIH, Baltimore, MD 21224, USA
| | - David Tweedie
- Drug Design & Development Section, Translational Gerontology Branch, Intramural Research Program National Institute on Aging, Biomedical Research Center, 251 Bayview Blvd., NIH, Baltimore, MD 21224, USA
| | - Dong Seok Kim
- Aevisbio Inc., Gaithersburg, MD 20878, USA
- Aevis Bio Inc., Daejeon 34141, Republic of Korea
| | - Marcella Reale
- Department of Innovative Technologies in Medicine and Dentistry, G. d'Annunzio University of Chieti and Pescara, 66100 Chieti, Italy
| | - Neil Vargesson
- School of Medicine, Medical Sciences and Nutrition, Institute of Medical Sciences, University of Aberdeen, Aberdeen AB25 2ZD, UK
| | - Nigel H Greig
- Drug Design & Development Section, Translational Gerontology Branch, Intramural Research Program National Institute on Aging, Biomedical Research Center, 251 Bayview Blvd., NIH, Baltimore, MD 21224, USA
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Cumbres-Vargas IM, Zamudio SR, Pichardo-Macías LA, Ramírez-San Juan E. Thalidomide Attenuates Epileptogenesis and Seizures by Decreasing Brain Inflammation in Lithium Pilocarpine Rat Model. Int J Mol Sci 2023; 24:ijms24076488. [PMID: 37047461 PMCID: PMC10094940 DOI: 10.3390/ijms24076488] [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: 02/28/2023] [Revised: 03/23/2023] [Accepted: 03/28/2023] [Indexed: 04/14/2023] Open
Abstract
Thalidomide (TAL) has shown potential therapeutic effects in neurological diseases like epilepsy. Both clinical and preclinical studies show that TAL may act as an antiepileptic drug and as a possible treatment against disease development. However, the evidence for these effects is limited. Therefore, the antiepileptogenic and anti-inflammatory effects of TAL were evaluated herein. Sprague Dawley male rats were randomly allocated to one of five groups (n = 18 per group): control (C); status epilepticus (SE); SE-TAL (25 mg/kg); SE-TAL (50 mg/kg); and SE-topiramate (TOP; 60mg/kg). The lithium-pilocarpine model was used, and one day after SE induction the rats received pharmacological treatment for one week. The brain was obtained, and the hippocampus was micro-dissected 8, 18, and 28 days after SE. TNF-α, IL-6, and IL-1β concentrations were quantified. TOP and TAL (50 mg/kg) increased the latency to the first of many spontaneous recurrent seizures (SRS) and decreased SRS frequency, as well as decreasing TNF-α and IL-1β concentrations in the hippocampus. In conclusion, the results showed that both TAL (50 mg/kg) and TOP have anti-ictogenic and antiepileptogenic effects, possibly by decreasing neuroinflammation.
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Affiliation(s)
- Irán M Cumbres-Vargas
- Departamento de Fisiología, Escuela Nacional de Ciencias Biológicas, Instituto Politécnico Nacional, Mexico City 07738, Mexico
| | - Sergio R Zamudio
- Departamento de Fisiología, Escuela Nacional de Ciencias Biológicas, Instituto Politécnico Nacional, Mexico City 07738, Mexico
| | - Luz A Pichardo-Macías
- Departamento de Fisiología, Escuela Nacional de Ciencias Biológicas, Instituto Politécnico Nacional, Mexico City 07738, Mexico
| | - Eduardo Ramírez-San Juan
- Departamento de Fisiología, Escuela Nacional de Ciencias Biológicas, Instituto Politécnico Nacional, Mexico City 07738, Mexico
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Lecca D, Hsueh SC, Luo W, Tweedie D, Kim DS, Baig AM, Vargesson N, Kim YK, Hwang I, Kim S, Hoffer BJ, Chiang YH, Greig NH. Novel, thalidomide-like, non-cereblon binding drug tetrafluorobornylphthalimide mitigates inflammation and brain injury. J Biomed Sci 2023; 30:16. [PMID: 36872339 PMCID: PMC9987061 DOI: 10.1186/s12929-023-00907-5] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2023] [Accepted: 02/09/2023] [Indexed: 03/07/2023] Open
Abstract
BACKGROUND Quelling microglial-induced excessive neuroinflammation is a potential treatment strategy across neurological disorders, including traumatic brain injury (TBI), and can be achieved by thalidomide-like drugs albeit this approved drug class is compromised by potential teratogenicity. Tetrafluorobornylphthalimide (TFBP) and tetrafluoronorbornylphthalimide (TFNBP) were generated to retain the core phthalimide structure of thalidomide immunomodulatory imide drug (IMiD) class. However, the classical glutarimide ring was replaced by a bridged ring structure. TFBP/TFNBP were hence designed to retain beneficial anti-inflammatory properties of IMiDs but, importantly, hinder cereblon binding that underlies the adverse action of thalidomide-like drugs. METHODS TFBP/TFNBP were synthesized and evaluated for cereblon binding and anti-inflammatory actions in human and rodent cell cultures. Teratogenic potential was assessed in chicken embryos, and in vivo anti-inflammatory actions in rodents challenged with either lipopolysaccharide (LPS) or controlled cortical impact (CCI) moderate traumatic brain injury (TBI). Molecular modeling was performed to provide insight into drug/cereblon binding interactions. RESULTS TFBP/TFNBP reduced markers of inflammation in mouse macrophage-like RAW264.7 cell cultures and in rodents challenged with LPS, lowering proinflammatory cytokines. Binding studies demonstrated minimal interaction with cereblon, with no resulting degradation of teratogenicity-associated transcription factor SALL4 or of teratogenicity in chicken embryo assays. To evaluate the biological relevance of its anti-inflammatory actions, two doses of TFBP were administered to mice at 1 and 24 h post-injury following CCI TBI. Compared to vehicle treatment, TFBP reduced TBI lesion size together with TBI-induction of an activated microglial phenotype, as evaluated by immunohistochemistry 2-weeks post-injury. Behavioral evaluations at 1- and 2-weeks post-injury demonstrated TFBP provided more rapid recovery of TBI-induced motor coordination and balance impairments, versus vehicle treated mice. CONCLUSION TFBP and TFNBP represent a new class of thalidomide-like IMiDs that lower proinflammatory cytokine generation but lack binding to cereblon, the main teratogenicity-associated mechanism. This aspect makes TFBP and TFNBP potentially safer than classic IMiDs for clinical use. TFBP provides a strategy to mitigate excessive neuroinflammation associated with moderate severity TBI to, thereby, improve behavioral outcome measures and warrants further investigation in neurological disorders involving a neuroinflammatory component.
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Affiliation(s)
- Daniela Lecca
- Drug Design and Development Section, Translational Gerontology Branch, Intramural Research Program National Institute On Aging, NIH, Baltimore, MD, 21224, USA
| | - Shih-Chang Hsueh
- Drug Design and Development Section, Translational Gerontology Branch, Intramural Research Program National Institute On Aging, NIH, Baltimore, MD, 21224, USA
| | - Weiming Luo
- Drug Design and Development Section, Translational Gerontology Branch, Intramural Research Program National Institute On Aging, NIH, Baltimore, MD, 21224, USA
| | - David Tweedie
- Drug Design and Development Section, Translational Gerontology Branch, Intramural Research Program National Institute On Aging, NIH, Baltimore, MD, 21224, USA
| | - Dong Seok Kim
- Aevisbio Inc., Gaithersburg, MD, 20878, USA
- Aevis Bio Inc., Daejeon, 34141, Republic of Korea
| | - Abdul Mannan Baig
- Department of Biological and Biomedical Sciences, Aga Khan University, Karachi, 74800, Pakistan
| | - Neil Vargesson
- School of Medicine, Medical Sciences and Nutrition, Institute of Medical Sciences, University of Aberdeen, Aberdeen, AB25 2ZD, Scotland, UK
| | - Yu Kyung Kim
- Aevis Bio Inc., Daejeon, 34141, Republic of Korea
| | - Inho Hwang
- Aevis Bio Inc., Daejeon, 34141, Republic of Korea
| | - Sun Kim
- Aevis Bio Inc., Daejeon, 34141, Republic of Korea
| | - Barry J Hoffer
- Department of Neurological Surgery, Case Western Reserve University School of Medicine, Cleveland, OH, 44106, USA
| | - Yung-Hsiao Chiang
- Neuroscience Research Center, Taipei Medical University, Taipei, 110, Taiwan.
- Department of Neurosurgery, Taipei Medical University Hospital, Department of Surgery, School of Medicine, College of Medicine, Taipei Medical University, Taipei, 110, Taiwan.
| | - Nigel H Greig
- Drug Design and Development Section, Translational Gerontology Branch, Intramural Research Program National Institute On Aging, NIH, Baltimore, MD, 21224, USA.
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Kopp KO, Glotfelty EJ, Li Y, Greig NH. Glucagon-like peptide-1 (GLP-1) receptor agonists and neuroinflammation: Implications for neurodegenerative disease treatment. Pharmacol Res 2022; 186:106550. [PMID: 36372278 PMCID: PMC9712272 DOI: 10.1016/j.phrs.2022.106550] [Citation(s) in RCA: 35] [Impact Index Per Article: 17.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/11/2022] [Revised: 11/03/2022] [Accepted: 11/06/2022] [Indexed: 11/13/2022]
Abstract
Chronic, excessive neuroinflammation is a key feature of neurodegenerative diseases such as Alzheimer's disease (AD) and Parkinson's disease (PD). However, neuroinflammatory pathways have yet to be effectively targeted in clinical treatments for such diseases. Interestingly, increased inflammation and neurodegenerative disease risk have been associated with type 2 diabetes mellitus (T2DM) and insulin resistance (IR), suggesting that treatments that mitigate T2DM pathology may be successful in treating neuroinflammatory and neurodegenerative pathology as well. Glucagon-like peptide-1 (GLP-1) is an incretin hormone that promotes healthy insulin signaling, regulates blood sugar levels, and suppresses appetite. Consequently, numerous GLP-1 receptor (GLP-1R) stimulating drugs have been developed and approved by the US Food and Drug Administration (FDA) and related global regulatory authorities for the treatment of T2DM. Furthermore, GLP-1R stimulating drugs have been associated with anti-inflammatory, neurotrophic, and neuroprotective properties in neurodegenerative disorder preclinical models, and hence hold promise for repurposing as a treatment for neurodegenerative diseases. In this review, we discuss incretin signaling, neuroinflammatory pathways, and the intersections between neuroinflammation, brain IR, and neurodegenerative diseases, with a focus on AD and PD. We additionally overview current FDA-approved incretin receptor stimulating drugs and agents in development, including unimolecular single, dual, and triple receptor agonists, and highlight those in clinical trials for neurodegenerative disease treatment. We propose that repurposing already-approved GLP-1R agonists for the treatment of neurodegenerative diseases may be a safe, efficacious, and cost-effective strategy for ameliorating AD and PD pathology by quelling neuroinflammation.
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Affiliation(s)
- Katherine O Kopp
- Drug Design & Development Section, Translational Gerontology Branch, Intramural Research Program National Institute on Aging, NIH, Baltimore, MD 21224, United States.
| | - Elliot J Glotfelty
- Drug Design & Development Section, Translational Gerontology Branch, Intramural Research Program National Institute on Aging, NIH, Baltimore, MD 21224, United States; Department of Neuroscience, Karolinska Institutet, Stockholm, Sweden
| | - Yazhou Li
- Drug Design & Development Section, Translational Gerontology Branch, Intramural Research Program National Institute on Aging, NIH, Baltimore, MD 21224, United States
| | - Nigel H Greig
- Drug Design & Development Section, Translational Gerontology Branch, Intramural Research Program National Institute on Aging, NIH, Baltimore, MD 21224, United States.
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9
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Andrews PL, Williams RS, Sanger GJ. Anti-emetic effects of thalidomide: Evidence, mechanism of action, and future directions. CURRENT RESEARCH IN PHARMACOLOGY AND DRUG DISCOVERY 2022; 3:100138. [PMID: 36568268 PMCID: PMC9780081 DOI: 10.1016/j.crphar.2022.100138] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2022] [Revised: 10/10/2022] [Accepted: 10/26/2022] [Indexed: 11/06/2022] Open
Abstract
The rationale for using thalidomide (THD) as a treatment for nausea and vomiting during pregnancy in the late 1950s appears to have been based on its sedative or hypnotic properties. In contrast to contemporaneous studies on the anti-emetic activity of phenothiazines, we were unable to identify publications reporting preclinical or clinical evaluation of THD as an anti-emetic. Our survey of the literature revealed a clinical study in 1965 showing THD reduced vomiting in cancer chemotherapy which was substantiated by similar studies from 2000, particularly showing efficacy in the delayed phase of chemotherapy-induced nausea and vomiting. To identify the mechanism(s) potentially involved in thalidomide's anti-emetic activity we reviewed its pharmacology in the light of nausea and vomiting mechanisms and their pharmacology with a particular emphasis on chemotherapy and pregnancy. The process identified the following potential mechanisms: reduced secretion of Growth Differentiation Factor 15, suppression of inflammation/prostaglandin production, downregulation of cytotoxic drug induced upregulation of iNOS, and modulation of BK (KCa1.1) channels and GABAA/glutamate transmission at critical points in the emetic pathways (nucleus tractus solitarius, area postrema). We propose ways to investigate these hypothesized mechanisms and discuss the associated challenges (e.g., objective quantification of nausea) in addition to some of the more general aspects of developing novel drugs to treat nausea and vomiting.
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Affiliation(s)
- Paul L.R. Andrews
- Division of Biomedical Sciences, St George's University of London, London, United Kingdom
| | - Robin S.B. Williams
- Centre for Biomedical Sciences, Department of Biological Sciences, Royal Holloway University of London, Egham, United Kingdom
| | - Gareth J. Sanger
- Blizard Institute, Faculty of Medicine and Dentistry, Queen Mary University of London, United Kingdom
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10
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Hsueh SC, Scerba MT, Tweedie D, Lecca D, Kim DS, Baig AM, Kim YK, Hwang I, Kim S, Selman WR, Hoffer BJ, Greig NH. Activity of a Novel Anti-Inflammatory Agent F-3,6'-dithiopomalidomide as a Treatment for Traumatic Brain Injury. Biomedicines 2022; 10:2449. [PMID: 36289711 PMCID: PMC9598880 DOI: 10.3390/biomedicines10102449] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2022] [Revised: 09/01/2022] [Accepted: 09/17/2022] [Indexed: 11/16/2022] Open
Abstract
Traumatic brain injury (TBI) is a major risk factor for several neurodegenerative disorders, including Parkinson's disease (PD) and Alzheimer's disease (AD). Neuroinflammation is a cause of later secondary cell death following TBI, has the potential to aggravate the initial impact, and provides a therapeutic target, albeit that has failed to translate into clinical trial success. Thalidomide-like compounds have neuroinflammation reduction properties across cellular and animal models of TBI and neurodegenerative disorders. They lower the generation of proinflammatory cytokines, particularly TNF-α which is pivotal in microglial cell activation. Unfortunately, thalidomide-like drugs possess adverse effects in humans before achieving anti-inflammatory drug levels. We developed F-3,6'-dithiopomalidomide (F-3,6'-DP) as a novel thalidomide-like compound to ameliorate inflammation. F-3,6'-DP binds to cereblon but does not efficiently trigger the degradation of the transcription factors (SALL4, Ikaros, and Aiolos) associated with the teratogenic and anti-proliferative responses of thalidomide-like drugs. We utilized a phenotypic drug discovery approach that employed cellular and animal models in the selection and development of F-3,6'-DP. F-3,6'-DP significantly mitigated LPS-induced inflammatory markers in RAW 264.7 cells, and lowered proinflammatory cytokine/chemokine levels in the plasma and brain of rats challenged with systemic LPS. We subsequently examined immunohistochemical, biochemical, and behavioral measures following controlled cortical impact (CCI) in mice, a model of moderate TBI known to induce inflammation. F-3,6'-DP decreased CCI-induced neuroinflammation, neuronal loss, and behavioral deficits when administered after TBI. F-3,6'-DP represents a novel class of thalidomide-like drugs that do not lower classical cereblon-associated transcription factors but retain anti-inflammatory actions and possess efficacy in the treatment of TBI and potentially longer-term neurodegenerative disorders.
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Affiliation(s)
- Shih Chang Hsueh
- Drug Design & Development Section, Translational Gerontology Branch, Intramural Research Program National Institute on Aging, NIH, Baltimore, MD 21224, USA
| | - Michael T. Scerba
- Drug Design & Development Section, Translational Gerontology Branch, Intramural Research Program National Institute on Aging, NIH, Baltimore, MD 21224, USA
| | - David Tweedie
- Drug Design & Development Section, Translational Gerontology Branch, Intramural Research Program National Institute on Aging, NIH, Baltimore, MD 21224, USA
| | - Daniela Lecca
- Drug Design & Development Section, Translational Gerontology Branch, Intramural Research Program National Institute on Aging, NIH, Baltimore, MD 21224, USA
| | - Dong Seok Kim
- AevisBio, Inc., Gaithersburg, MD 20878, USA
- Aevis Bio, Inc., Daejeon 34141, Korea
| | - Abdul Mannan Baig
- Department of Biological and Biomedical Sciences, Aga Khan University, Karachi 74800, Pakistan
| | | | | | - Sun Kim
- Aevis Bio, Inc., Daejeon 34141, Korea
| | - Warren R. Selman
- Department of Neurological Surgery, Case Western Reserve University and University Hospitals, Cleveland, OH 44106, USA
| | - Barry J. Hoffer
- Department of Neurological Surgery, Case Western Reserve University and University Hospitals, Cleveland, OH 44106, USA
| | - Nigel H. Greig
- Drug Design & Development Section, Translational Gerontology Branch, Intramural Research Program National Institute on Aging, NIH, Baltimore, MD 21224, USA
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11
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Tsai YR, Kim DS, Hsueh SC, Chen KY, Wu JCC, Wang JY, Tsou YS, Hwang I, Kim Y, Gil D, Jo EJ, Han BS, Tweedie D, Lecca D, Scerba MT, Selman WR, Hoffer BJ, Greig NH, Chiang YH. 3,6'- and 1,6'-Dithiopomalidomide Mitigate Ischemic Stroke in Rats and Blunt Inflammation. Pharmaceutics 2022; 14:950. [PMID: 35631536 PMCID: PMC9146426 DOI: 10.3390/pharmaceutics14050950] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2022] [Revised: 04/11/2022] [Accepted: 04/25/2022] [Indexed: 01/20/2023] Open
Abstract
(1) Background: An important concomitant of stroke is neuroinflammation. Pomalidomide, a clinically available immunomodulatory imide drug (IMiD) used in cancer therapy, lowers TNF-α generation and thus has potent anti-inflammatory actions. Well-tolerated analogs may provide a stroke treatment and allow evaluation of the role of neuroinflammation in the ischemic brain. (2) Methods: Two novel pomalidomide derivatives, 3,6'-dithiopomalidomide (3,6'-DP) and 1,6'-dithiopomalidomide (1,6'-DP), were evaluated alongside pomalidomide in a rat middle cerebral artery occlusion (MCAo) stroke model, and their anti-inflammatory actions were characterized. (3) Results: Post-MCAo administration of all drugs lowered pro-inflammatory TNF-α and IL1-β levels, and reduced stroke-induced postural asymmetry and infarct size. Whereas 3,6'- and 1,6'-DP, like pomalidomide, potently bound to cereblon in cellular studies, 3,6'-DP did not lower Ikaros, Aiolos or SALL4 levels-critical intermediates mediating the anticancer/teratogenic actions of pomalidomide and IMiDs. 3,6'-DP and 1,6'-DP lacked activity in mammalian chromosome aberration, AMES and hERG channel assays -critical FDA regulatory tests. Finally, 3,6'- and 1,6'-DP mitigated inflammation across rat primary dopaminergic neuron and microglia mixed cultures challenged with α-synuclein and mouse LPS-challenged RAW 264.7 cells. (4) Conclusion: Neuroinflammation mediated via TNF-α plays a key role in stroke outcome, and 3,6'-DP and 1,6'-DP may prove valuable as stroke therapies and thus warrant further preclinical development.
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Affiliation(s)
- Yan-Rou Tsai
- Neuroscience Research Center, Taipei Medical University, Taipei 110, Taiwan; (Y.-R.T.); (K.-Y.C.); (J.C.-C.W.); (J.-Y.W.)
- Department of Neurosurgery, Taipei Medical University Hospital, Taipei Medical University, Taipei 110, Taiwan;
| | - Dong Seok Kim
- Aevisbio Inc., Gaithersburg, MD 20878, USA;
- Aevis Bio Inc., Daejeon 34141, Korea; (I.H.); (Y.K.); (D.G.); (E.J.J.)
| | - Shih-Chang Hsueh
- Drug Design & Development Section, Translational Gerontology Branch, Intramural Research Program National Institute on Aging, NIH, Baltimore, MD 21224, USA; (S.-C.H.); (D.T.); (D.L.); (M.T.S.)
| | - Kai-Yun Chen
- Neuroscience Research Center, Taipei Medical University, Taipei 110, Taiwan; (Y.-R.T.); (K.-Y.C.); (J.C.-C.W.); (J.-Y.W.)
- The Ph.D. Program for Neural Regenerative Medicine, College of Medical Science and Technology, Taipei Medical University, Taipei 110, Taiwan
| | - John Chung-Che Wu
- Neuroscience Research Center, Taipei Medical University, Taipei 110, Taiwan; (Y.-R.T.); (K.-Y.C.); (J.C.-C.W.); (J.-Y.W.)
- Department of Neurosurgery, Taipei Medical University Hospital, Taipei Medical University, Taipei 110, Taiwan;
- Department of Surgery, College of Medicine, Taipei Medical University, Taipei 110, Taiwan
| | - Jia-Yi Wang
- Neuroscience Research Center, Taipei Medical University, Taipei 110, Taiwan; (Y.-R.T.); (K.-Y.C.); (J.C.-C.W.); (J.-Y.W.)
- Department of Neurosurgery, Taipei Medical University Hospital, Taipei Medical University, Taipei 110, Taiwan;
| | - Yi-Syue Tsou
- Department of Neurosurgery, Taipei Medical University Hospital, Taipei Medical University, Taipei 110, Taiwan;
- The Ph.D. Program for Neural Regenerative Medicine, College of Medical Science and Technology, Taipei Medical University, Taipei 110, Taiwan
- Taipei Neuroscience Institute, Taipei Medical University, Taipei 110, Taiwan
| | - Inho Hwang
- Aevis Bio Inc., Daejeon 34141, Korea; (I.H.); (Y.K.); (D.G.); (E.J.J.)
| | - Yukyung Kim
- Aevis Bio Inc., Daejeon 34141, Korea; (I.H.); (Y.K.); (D.G.); (E.J.J.)
| | - Dayeon Gil
- Aevis Bio Inc., Daejeon 34141, Korea; (I.H.); (Y.K.); (D.G.); (E.J.J.)
| | - Eui Jung Jo
- Aevis Bio Inc., Daejeon 34141, Korea; (I.H.); (Y.K.); (D.G.); (E.J.J.)
| | - Baek-Soo Han
- Research Center for Biodefence, Korea Research Institute of Bioscience and Biotechnology, Daejeon 305-806, Korea;
| | - David Tweedie
- Drug Design & Development Section, Translational Gerontology Branch, Intramural Research Program National Institute on Aging, NIH, Baltimore, MD 21224, USA; (S.-C.H.); (D.T.); (D.L.); (M.T.S.)
| | - Daniela Lecca
- Drug Design & Development Section, Translational Gerontology Branch, Intramural Research Program National Institute on Aging, NIH, Baltimore, MD 21224, USA; (S.-C.H.); (D.T.); (D.L.); (M.T.S.)
| | - Michael T. Scerba
- Drug Design & Development Section, Translational Gerontology Branch, Intramural Research Program National Institute on Aging, NIH, Baltimore, MD 21224, USA; (S.-C.H.); (D.T.); (D.L.); (M.T.S.)
| | - Warren R. Selman
- Department of Neurological Surgery, Case Western Reserve University, Cleveland, OH 44106, USA; (W.R.S.); (B.J.H.)
- University Hospitals Cleveland Medical Center, Cleveland, OH 44106, USA
| | - Barry J. Hoffer
- Department of Neurological Surgery, Case Western Reserve University, Cleveland, OH 44106, USA; (W.R.S.); (B.J.H.)
| | - Nigel H. Greig
- Drug Design & Development Section, Translational Gerontology Branch, Intramural Research Program National Institute on Aging, NIH, Baltimore, MD 21224, USA; (S.-C.H.); (D.T.); (D.L.); (M.T.S.)
| | - Yung-Hsiao Chiang
- Neuroscience Research Center, Taipei Medical University, Taipei 110, Taiwan; (Y.-R.T.); (K.-Y.C.); (J.C.-C.W.); (J.-Y.W.)
- Department of Neurosurgery, Taipei Medical University Hospital, Taipei Medical University, Taipei 110, Taiwan;
- The Ph.D. Program for Neural Regenerative Medicine, College of Medical Science and Technology, Taipei Medical University, Taipei 110, Taiwan
- Department of Surgery, College of Medicine, Taipei Medical University, Taipei 110, Taiwan
- Taipei Neuroscience Institute, Taipei Medical University, Taipei 110, Taiwan
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12
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3,6'-Dithiopomalidomide Ameliorates Hippocampal Neurodegeneration, Microgliosis and Astrogliosis and Improves Cognitive Behaviors in Rats with a Moderate Traumatic Brain Injury. Int J Mol Sci 2021; 22:ijms22158276. [PMID: 34361041 PMCID: PMC8348060 DOI: 10.3390/ijms22158276] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2021] [Revised: 07/27/2021] [Accepted: 07/28/2021] [Indexed: 01/06/2023] Open
Abstract
Traumatic brain injury (TBI) is a leading cause of disability and mortality worldwide. It can instigate immediate cell death, followed by a time-dependent secondary injury that results from disproportionate microglial and astrocyte activation, excessive inflammation and oxidative stress in brain tissue, culminating in both short- and long-term cognitive dysfunction and behavioral deficits. Within the brain, the hippocampus is particularly vulnerable to a TBI. We studied a new pomalidomide (Pom) analog, namely, 3,6′-dithioPom (DP), and Pom as immunomodulatory imide drugs (IMiD) for mitigating TBI-induced hippocampal neurodegeneration, microgliosis, astrogliosis and behavioral impairments in a controlled cortical impact (CCI) model of TBI in rats. Both agents were administered as a single intravenous dose (0.5 mg/kg) at 5 h post injury so that the efficacies could be compared. Pom and DP significantly reduced the contusion volume evaluated at 24 h and 7 days post injury. Both agents ameliorated short-term memory deficits and anxiety behavior at 7 days after a TBI. The number of degenerating neurons in the CA1 and dentate gyrus (DG) regions of the hippocampus after a TBI was reduced by Pom and DP. DP, but not Pom, significantly attenuated the TBI-induced microgliosis and DP was more efficacious than Pom at attenuating the TBI-induced astrogliosis in CA1 and DG at 7D after a TBI. In summary, a single intravenous injection of Pom or DP, given 5 h post TBI, significantly reduced hippocampal neurodegeneration and prevented cognitive deficits with a concomitant attenuation of the neuroinflammation in the hippocampus.
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13
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Jung YJ, Tweedie D, Scerba MT, Kim DS, Palmas MF, Pisanu A, Carta AR, Greig NH. Repurposing Immunomodulatory Imide Drugs (IMiDs) in Neuropsychiatric and Neurodegenerative Disorders. Front Neurosci 2021; 15:656921. [PMID: 33854417 PMCID: PMC8039148 DOI: 10.3389/fnins.2021.656921] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2021] [Accepted: 03/01/2021] [Indexed: 12/12/2022] Open
Abstract
Neuroinflammation represents a common trait in the pathology and progression of the major psychiatric and neurodegenerative disorders. Neuropsychiatric disorders have emerged as a global crisis, affecting 1 in 4 people, while neurological disorders are the second leading cause of death in the elderly population worldwide (WHO, 2001; GBD 2016 Neurology Collaborators, 2019). However, there remains an immense deficit in availability of effective drug treatments for most neurological disorders. In fact, for disorders such as depression, placebos and behavioral therapies have equal effectiveness as antidepressants. For neurodegenerative diseases such as Parkinson's disease and Alzheimer's disease, drugs that can prevent, slow, or cure the disease have yet to be found. Several non-traditional avenues of drug target identification have emerged with ongoing neurological disease research to meet the need for novel and efficacious treatments. Of these novel avenues is that of neuroinflammation, which has been found to be involved in the progression and pathology of many of the leading neurological disorders. Neuroinflammation is characterized by glial inflammatory factors in certain stages of neurological disorders. Although the meta-analyses have provided evidence of genetic/proteomic upregulation of inflammatory factors in certain stages of neurological disorders. Although the mechanisms underpinning the connections between neuroinflammation and neurological disorders are unclear, and meta-analysis results have shown high sensitivity to factors such as disorder severity and sample type, there is significant evidence of neuroinflammation associations across neurological disorders. In this review, we summarize the role of neuroinflammation in psychiatric disorders such as major depressive disorder, generalized anxiety disorder, post-traumatic stress disorder, and bipolar disorder, as well as in neurodegenerative disorders, such as Parkinson's disease and Alzheimer's disease, and introduce current research on the potential of immunomodulatory imide drugs (IMiDs) as a new treatment strategy for these disorders.
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Affiliation(s)
- Yoo Jin Jung
- Drug Design & Development Section, Translational Gerontology Branch, Intramural Research Program, National Institute on Aging, National Institutes of Health, Baltimore, MD, United States
- Stanford Neurosciences Interdepartmental Program, Stanford University School of Medicine, Stanford, CA, United States
| | - David Tweedie
- Drug Design & Development Section, Translational Gerontology Branch, Intramural Research Program, National Institute on Aging, National Institutes of Health, Baltimore, MD, United States
| | - Michael T. Scerba
- Drug Design & Development Section, Translational Gerontology Branch, Intramural Research Program, National Institute on Aging, National Institutes of Health, Baltimore, MD, United States
| | - Dong Seok Kim
- AevisBio, Inc., Gaithersburg, MD, United States
- Aevis Bio, Inc., Daejeon, South Korea
| | | | - Augusta Pisanu
- National Research Council, Institute of Neuroscience, Cagliari, Italy
| | - Anna R. Carta
- Department of Biomedical Sciences, University of Cagliari, Cagliari, Italy
| | - Nigel H. Greig
- Drug Design & Development Section, Translational Gerontology Branch, Intramural Research Program, National Institute on Aging, National Institutes of Health, Baltimore, MD, United States
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