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Medina DX, Chung EP, Teague CD, Bowser R, Sirianni RW. Intravenously Administered, Retinoid Activating Nanoparticles Increase Lifespan and Reduce Neurodegeneration in the SOD1 G93A Mouse Model of ALS. Front Bioeng Biotechnol 2020; 8:224. [PMID: 32292776 PMCID: PMC7118553 DOI: 10.3389/fbioe.2020.00224] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2019] [Accepted: 03/05/2020] [Indexed: 12/12/2022] Open
Abstract
Dysregulation of the retinoic acid (RA) signaling pathway is observed in amyotrophic lateral sclerosis (ALS) and other neurodegenerative disorders. Here, we investigated the therapeutic potential of retinoid activation via the RA receptor β (RARβ) in the SOD1G93A mouse model of ALS. Our approach utilized the RARβ agonist adapalene, which we previously found to be neuroprotective in vitro. Adapalene, like most retinoids, is poorly water soluble, which has thus far prevented effective drug delivery in vivo. To address this challenge, we encapsulated adapalene within nanoparticles (Adap-NPs) composed of poly(lactic acid)-poly(ethylene glycol) (PLA-PEG). Our data demonstrate that intravenous administration of Adap-NPs robustly activates retinoid signaling in the CNS. Chronic administration of Adap-NPs resulted in improved motor performance, prolonged lifespan, and neuroprotection in SOD1G93A mice. This study highlights retinoid signaling as a valuable therapeutic approach and presents a novel nanoparticle platform for the treatment of ALS.
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Affiliation(s)
- David X Medina
- Gregory W. Fulton ALS Center, Department of Neurobiology, Barrow Neurological Institute, Phoenix, AZ, United States.,Barrow Brain Tumor Research Center, Barrow Neurological Institute, Phoenix, AZ, United States
| | - Eugene P Chung
- Barrow Brain Tumor Research Center, Barrow Neurological Institute, Phoenix, AZ, United States
| | - Collin D Teague
- Barrow Brain Tumor Research Center, Barrow Neurological Institute, Phoenix, AZ, United States
| | - Robert Bowser
- Gregory W. Fulton ALS Center, Department of Neurobiology, Barrow Neurological Institute, Phoenix, AZ, United States
| | - Rachael W Sirianni
- Barrow Brain Tumor Research Center, Barrow Neurological Institute, Phoenix, AZ, United States.,Vivian L. Smith Department of Neurosurgery, University of Texas Health Science Center at Houston, Houston, TX, United States
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Lipid and polymer blended polyester nanoparticles loaded with adapalene for activation of retinoid signaling in the CNS following intravenous administration. J Drug Deliv Sci Technol 2019. [DOI: 10.1016/j.jddst.2019.04.013] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Riancho J, Bosque-Varela P, Perez-Pereda S, Povedano M, de Munaín AL, Santurtun A. The increasing importance of environmental conditions in amyotrophic lateral sclerosis. INTERNATIONAL JOURNAL OF BIOMETEOROLOGY 2018; 62:1361-1374. [PMID: 29713861 DOI: 10.1007/s00484-018-1550-2] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/01/2017] [Revised: 04/15/2018] [Accepted: 04/16/2018] [Indexed: 06/08/2023]
Abstract
Amyotrophic lateral sclerosis (ALS) is the most common neurodegenerative disease affecting motor neurons (MNs). Although a small percentage of ALS has a familial origin, the vast majority of cases are sporadic in which genetic factors and environment interact with each other leading to disease onset in genetically predisposed individuals. In the current model of the disease, each individual has a determined genetic load, some degree of cell degeneration related to age and several risky environmental exposures. In this scenario, MN degeneration would occur when the sum of these factors reach a certain threshold. To date, an extensive list of environmental factors has been associated to ALS, including different categories, such as exposure to heavy metals and other toxicants, cyanotoxins or infectious agents. In addition, in recent years, lifestyle and other demographic parameters are gaining relevance in the genesis of the disease. Among them, physical activity, nutrition, body mass index, cardiovascular risk factors, autoimmune diseases and cancer are some of the conditions which have been related to the disease. In this review, we will discuss the potential mechanisms of environmental conditions in motor neuron degeneration. Understanding the role of each one of these factors as well as their interactions appears as a crucial step in order to develop new preventive, diagnostic and therapeutic approaches for ALS patients.
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Affiliation(s)
- Javier Riancho
- Service of Neurology, Hospital Sierrallana, Institute of Research Valdecilla (IDIVAL), Torrelavega, Spain.
- Department of Medicine, University of Cantabria, Santander, Spain.
- Centro de Investigación Biomédica en Red sobre Enfermedades Neurodegenerativas, CIBERNED, Instituto Carlos III, Ministry of Economy and Competitiveness, Madrid, Spain.
| | - Pilar Bosque-Varela
- Service of Neurology, University Hospital Marques de Valdecilla, Santander, Spain
| | - Sara Perez-Pereda
- Service of Neurology, University Hospital Marques de Valdecilla, Santander, Spain
| | - Mónica Povedano
- Centro de Investigación Biomédica en Red sobre Enfermedades Neurodegenerativas, CIBERNED, Instituto Carlos III, Ministry of Economy and Competitiveness, Madrid, Spain
- Service of Neurology-Motor Neuron Unit, IDIBELL, Bellvitge University Hospital, Barcelona, Spain
| | - Adolfo López de Munaín
- Centro de Investigación Biomédica en Red sobre Enfermedades Neurodegenerativas, CIBERNED, Instituto Carlos III, Ministry of Economy and Competitiveness, Madrid, Spain
- ALS Multidisciplinary Unit, Hospital Donostia- Neuroscience Area, Donostia Health Research Institute, San Sebastián, Spain
| | - Ana Santurtun
- Toxicology Unit, Physiology and Farmacology Department, University of Cantabria-IDIVAL, Santander, Spain
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