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Nasir A, Rehman MU, Khan T, Husn M, Khan M, Khan A, Nuh AM, Jiang W, Farooqi HMU, Bai Q. Advances in nanotechnology-assisted photodynamic therapy for neurological disorders: a comprehensive review. ARTIFICIAL CELLS, NANOMEDICINE, AND BIOTECHNOLOGY 2024; 52:84-103. [PMID: 38235991 DOI: 10.1080/21691401.2024.2304814] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/04/2023] [Accepted: 01/03/2024] [Indexed: 01/19/2024]
Abstract
Neurological disorders such as neurodegenerative diseases and nervous system tumours affect more than one billion people throughout the globe. The physiological sensitivity of the nervous tissue limits the application of invasive therapies and leads to poor treatment and prognosis. One promising solution that has generated attention is Photodynamic therapy (PDT), which can potentially revolutionise the treatment landscape for neurological disorders. PDT attracted substantial recognition for anticancer efficacy and drug conjugation for targeted drug delivery. This review thoroughly explained the basic principles of PDT, scientific interventions and advances in PDT, and their complicated mechanism in treating brain-related pathologies. Furthermore, the merits and demerits of PDT in the context of neurological disorders offer a well-rounded perspective on its feasibility and challenges. In conclusion, this review encapsulates the significant potential of PDT in transforming the treatment landscape for neurological disorders, emphasising its role as a non-invasive, targeted therapeutic approach with multifaceted applications.
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Affiliation(s)
- Abdul Nasir
- Medical Research Center, Second Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Mujeeb Ur Rehman
- Department of Zoology, Islamia College University, Peshawar, Pakistan
| | - Tamreez Khan
- Department of Zoology, Abdul Wali Khan University, Mardan, Pakistan
| | - Mansoor Husn
- Department of Biochemistry, Abdul Wali Khan University, Mardan, Pakistan
| | - Manzar Khan
- Department of Zoology, Hazara University Mansehra, Mansehra, Pakistan
| | - Ahmad Khan
- Department of Psychology, University of Karachi, Karachi, Pakistan
| | - Abdifatah Mohamed Nuh
- Department of Obstetrics and Gynecology, Second Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Wei Jiang
- Medical Research Center, Second Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | | | - Qain Bai
- Medical Research Center, Second Affiliated Hospital of Zhengzhou University, Zhengzhou, China
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Liu X, Chen J, Du Y, Tian Q, Wang L, Li W, Liu G, Tan Q, Wang J, Deng X. The changes of neurogenesis in the hippocampal dentate gyrus of SAMP8 mice and the effects of acupuncture and moxibustion. Brain Res 2024; 1831:148814. [PMID: 38395250 DOI: 10.1016/j.brainres.2024.148814] [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: 11/29/2023] [Revised: 02/15/2024] [Accepted: 02/18/2024] [Indexed: 02/25/2024]
Abstract
BACKGROUND Influenced by the global aging population, the incidence of Alzheimer's disease (AD) has increased sharply. In addition to increasing β-amyloid plaque deposition and tau tangle formation, neurogenesis dysfunction has recently been observed in AD. Therefore, promoting regeneration to improve neurogenesis and cognitive dysfunction can play an effective role in AD treatment. Acupuncture and moxibustion have been widely used in the clinical treatment of neurodegenerative diseases because of their outstanding advantages such as early, functional, and benign two-way adjustment. It is urgent to clarify the effectiveness, greenness, and safety of acupuncture and moxibustion in promoting neurogenesis in AD treatment. METHODS Senescence-accelerated mouse prone 8 (SAMP8) mice at various ages were used as experimental models to simulate the pathology and behaviors of AD mice. Behavioral experiments, immunohistochemistry, Western blot, and immunofluorescence experiments were used for comparison between different groups. RESULTS Acupuncture and moxibustion could increase the number of PCNA+ DCX+ cells, Nissl bodies, and mature neurons in the hippocampal Dentate gyrus (DG) of SAMP8 mice, restore the hippocampal neurogenesis, delay the AD-related pathological presentation, and improve the learning and memory abilities of SAMP8 mice. CONCLUSION The pathological process underlying AD and cognitive impairment were changed positively by improving the dysfunction of neurogenesis. This indicates the promising role of acupuncture and moxibustion in the prevention and treatment of AD.
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Affiliation(s)
- Xinyuan Liu
- College of Acupuncture-Moxibustion and Orthopaedics, Hubei University of Chinese Medicine, Wuhan, Hubei 430061, China
| | - Jiangmin Chen
- College of Acupuncture-Moxibustion and Orthopaedics, Hubei University of Chinese Medicine, Wuhan, Hubei 430061, China
| | - Yanjun Du
- College of Acupuncture-Moxibustion and Orthopaedics, Hubei University of Chinese Medicine, Wuhan, Hubei 430061, China; Hubei Shizhen Laboratory, China; Hubei International Science and Technology Cooperation Base of Preventive Treatment by Acupuncture and Moxibustion, China.
| | - Qing Tian
- The Institute for Brain Research, Collaborative Innovation Center for Brain Science, Huazhong University of Science and Technology, Wuhan, Hubei 430030, China
| | - Li Wang
- College of Acupuncture-Moxibustion and Orthopaedics, Hubei University of Chinese Medicine, Wuhan, Hubei 430061, China
| | - Weixian Li
- College of Acupuncture-Moxibustion and Orthopaedics, Hubei University of Chinese Medicine, Wuhan, Hubei 430061, China
| | - Guangya Liu
- College of Acupuncture-Moxibustion and Orthopaedics, Hubei University of Chinese Medicine, Wuhan, Hubei 430061, China
| | - Qian Tan
- College of Acupuncture-Moxibustion and Orthopaedics, Hubei University of Chinese Medicine, Wuhan, Hubei 430061, China
| | - Jingzhi Wang
- College of Acupuncture-Moxibustion and Orthopaedics, Hubei University of Chinese Medicine, Wuhan, Hubei 430061, China
| | - Xiaoni Deng
- Wuhan University of Bioengineering, Wuhan, Hubei 430030, China
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Andrade-Brito DE, Núñez-Ríos DL, Martínez-Magaña JJ, Nagamatsu ST, Rompala G, Zillich L, Witt SH, Clark SL, Lattig MC, Montalvo-Ortiz JL. Neuronal-specific methylome and hydroxymethylome analysis reveal significant loci associated with alcohol use disorder. Front Genet 2024; 15:1345410. [PMID: 38633406 PMCID: PMC11021708 DOI: 10.3389/fgene.2024.1345410] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2023] [Accepted: 03/14/2024] [Indexed: 04/19/2024] Open
Abstract
Background: Alcohol use disorder (AUD) is a complex condition associated with adverse health consequences that affect millions of individuals worldwide. Epigenetic modifications, including DNA methylation (5 mC), have been associated with AUD and other alcohol-related traits. Epigenome-wide association studies (EWAS) have identified differentially methylated genes associated with AUD in human peripheral and brain tissue. More recently, epigenetic studies of AUD have also evaluated DNA hydroxymethylation (5 hmC) in the human brain. However, most of the epigenetic work in postmortem brain tissue has examined bulk tissue. In this study, we investigated neuronal-specific 5 mC and 5 hmC alterations at CpG sites associated with AUD in the human orbitofrontal cortex (OFC). Methods: Neuronal nuclei from the OFC were evaluated in 34 human postmortem brain samples (10 AUD, 24 non-AUD). Reduced representation oxidative bisulfite sequencing was used to assess 5 mC and 5 hmC at the genome-wide level. Differential 5 mC and 5 hmC were evaluated using the methylKit R package and significance was set at false discovery rate < 0.05 and differential methylation > 2. Functional enrichment analyses were performed, and gene-level convergence was evaluated in an independent dataset that assessed 5 mC and 5 hmC of AUD in bulk cortical tissue. Results: We identified 417 5 mC and 363 5hmC significant differential CpG sites associated with AUD, with 59% in gene promoters. Some of the identified genes have been previously implicated in alcohol consumption, including SYK, DNMT3A for 5 mC, GAD1, DLX1, DLX2, for 5 hmC and GATA4 in both. Convergence with a previous AUD 5 mC and 5 hmC study was observed for 28 genes. We also identified 5 and 35 differential regions for 5 mC and 5 hmC, respectively. Lastly, GWAS enrichment analysis showed an association with AUD for differential 5 mC genes. Discussion: This study reveals neuronal-specific methylome and hydroxymethylome dysregulation associated with AUD, identifying both previously reported and potentially novel gene associations with AUD. Our findings provide new insights into the epigenomic dysregulation of AUD in the human brain.
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Affiliation(s)
- Diego E. Andrade-Brito
- Department of Psychiatry, Yale University School of Medicine, New Haven, CT, United States
- National Center of Post-Traumatic Stress Disorder, VA CT Healthcare, West Haven, CT, United States
| | - Diana L. Núñez-Ríos
- Department of Psychiatry, Yale University School of Medicine, New Haven, CT, United States
- National Center of Post-Traumatic Stress Disorder, VA CT Healthcare, West Haven, CT, United States
| | - José Jaime Martínez-Magaña
- Department of Psychiatry, Yale University School of Medicine, New Haven, CT, United States
- National Center of Post-Traumatic Stress Disorder, VA CT Healthcare, West Haven, CT, United States
| | - Sheila T. Nagamatsu
- Department of Psychiatry, Yale University School of Medicine, New Haven, CT, United States
- National Center of Post-Traumatic Stress Disorder, VA CT Healthcare, West Haven, CT, United States
| | - Gregory Rompala
- Icahn School of Medicine at Mount Sinai, New York City, NY, United States
| | - Lea Zillich
- Department of Genetic Epidemiology in Psychiatry, Central Institute of Mental Health, Medical Faculty Mannheim, Heidelberg University, Mannheim, Germany
| | - Stephanie H. Witt
- Department of Genetic Epidemiology in Psychiatry, Central Institute of Mental Health, Medical Faculty Mannheim, Heidelberg University, Mannheim, Germany
| | - Shaunna L. Clark
- Department of Psychiatry and Behavioral Sciences, Texas A&M University, College Station, TX, United States
| | - Maria C. Lattig
- Facultad de Ciencias, Universidad de los Andes, Bogotá, Colombia
| | - Janitza L. Montalvo-Ortiz
- Department of Psychiatry, Yale University School of Medicine, New Haven, CT, United States
- National Center of Post-Traumatic Stress Disorder, VA CT Healthcare, West Haven, CT, United States
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Fantini V, Ferrari RR, Bordoni M, Spampinato E, Pandini C, Davin A, Medici V, Gagliardi S, Guaita A, Pansarasa O, Cereda C, Poloni TE. Functional analysis and transcriptome profile of meninges and skin fibroblasts from human-aged donors. Cell Prolif 2024:e13627. [PMID: 38421110 DOI: 10.1111/cpr.13627] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2023] [Revised: 02/12/2024] [Accepted: 02/19/2024] [Indexed: 03/02/2024] Open
Abstract
The central nervous system (CNS) is surrounded by three membranes called meninges. Specialised fibroblasts, originating from the mesoderm and neural crest, primarily populate the meninges and serve as a binding agent. Our goal was to compare fibroblasts from meninges and skin obtained from the same human-aged donors, exploring their molecular and cellular characteristics related to CNS functions. We isolated meningeal fibroblasts (MFs) from brain donors and skin fibroblasts (SFs) from the same subjects. A functional analysis was performed measuring cell appearance, metabolic activity, and cellular orientation. We examined fibronectin, serpin H1, β-III-tubulin, and nestin through qPCR and immunofluorescence. A whole transcriptome analysis was also performed to characterise the gene expression of MFs and SFs. MFs appeared more rapidly in the post-tissue processing, while SFs showed an elevated cellular metabolism and a well-defined cellular orientation. The four markers were mostly similar between the MFs and SFs, except for nestin, more expressed in MFs. Transcriptome analysis reveals significant differences, particularly in cyclic adenosine monophosphate (cAMP) metabolism and response to forskolin, both of which are upregulated in MFs. This study highlights MFs' unique characteristics, including the timing of appearance, metabolic activity, and gene expression patterns, particularly in cAMP metabolism and response to forskolin. These findings contribute to a deeper understanding of non-neuronal cells' involvement in CNS activities and potentially open avenues for therapeutic exploration.
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Affiliation(s)
- Valentina Fantini
- Laboratory of Neurobiology and Neurogenetic, Golgi-Cenci Foundation, Abbiategrasso, Italy
| | - Riccardo Rocco Ferrari
- Laboratory of Neurobiology and Neurogenetic, Golgi-Cenci Foundation, Abbiategrasso, Italy
| | - Matteo Bordoni
- Cellular Model and Neuroepigenetics Unit, IRCCS Mondino Foundation, Pavia, Italy
| | - Eleonora Spampinato
- Cellular Model and Neuroepigenetics Unit, IRCCS Mondino Foundation, Pavia, Italy
- Department of Biology and Biotechnology, University of Pavia, Pavia, Italy
| | - Cecilia Pandini
- Molecular Biology and Transcriptomics Unit, IRCCS Mondino Foundation, Pavia, Italy
- Department of Biosciences, University of Milan, Milan, Italy
| | - Annalisa Davin
- Laboratory of Neurobiology and Neurogenetic, Golgi-Cenci Foundation, Abbiategrasso, Italy
| | - Valentina Medici
- Department of Neurology and Neuropathology, Golgi-Cenci Foundation, Abbiategrasso, Italy
| | - Stella Gagliardi
- Molecular Biology and Transcriptomics Unit, IRCCS Mondino Foundation, Pavia, Italy
| | - Antonio Guaita
- Laboratory of Neurobiology and Neurogenetic, Golgi-Cenci Foundation, Abbiategrasso, Italy
- Department of Neurology and Neuropathology, Golgi-Cenci Foundation, Abbiategrasso, Italy
| | - Orietta Pansarasa
- Cellular Model and Neuroepigenetics Unit, IRCCS Mondino Foundation, Pavia, Italy
| | - Cristina Cereda
- Center of Functional Genomics and Rare Diseases, Department of Pediatrics, Buzzi Children's Hospital, Milan, Italy
| | - Tino Emanuele Poloni
- Department of Neurology and Neuropathology, Golgi-Cenci Foundation, Abbiategrasso, Italy
- Department of Rehabilitation, ASP Golgi-Redaelli Geriatric Hospital, Abbiategrasso, Italy
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Rastoldo G, Tighilet B. The Vestibular Nuclei: A Cerebral Reservoir of Stem Cells Involved in Balance Function in Normal and Pathological Conditions. Int J Mol Sci 2024; 25:1422. [PMID: 38338702 PMCID: PMC10855768 DOI: 10.3390/ijms25031422] [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: 12/26/2023] [Revised: 01/18/2024] [Accepted: 01/20/2024] [Indexed: 02/12/2024] Open
Abstract
In this review, we explore the intriguing realm of neurogenesis in the vestibular nuclei-a critical brainstem region governing balance and spatial orientation. We retrace almost 20 years of research into vestibular neurogenesis, from its discovery in the feline model in 2007 to the recent discovery of a vestibular neural stem cell niche. We explore the reasons why neurogenesis is important in the vestibular nuclei and the triggers for activating the vestibular neurogenic niche. We develop the symbiotic relationship between neurogenesis and gliogenesis to promote vestibular compensation. Finally, we examine the potential impact of reactive neurogenesis on vestibular compensation, highlighting its role in restoring balance through various mechanisms.
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Affiliation(s)
- Guillaume Rastoldo
- Aix Marseille Université-CNRS, Laboratoire de Neurosciences Cognitives, LNC UMR 7291, 13331 Marseille, France;
| | - Brahim Tighilet
- Aix Marseille Université-CNRS, Laboratoire de Neurosciences Cognitives, LNC UMR 7291, 13331 Marseille, France;
- GDR Vertige CNRS Unité GDR2074, 13331 Marseille, France
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Trojan A, Lone YC, Briceno I, Trojan J. Anti-Gene IGF-I Vaccines in Cancer Gene Therapy: A Review of a Case of Glioblastoma. Curr Med Chem 2024; 31:1983-2002. [PMID: 38031775 DOI: 10.2174/0109298673237968231106095141] [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: 12/05/2022] [Revised: 06/27/2023] [Accepted: 10/10/2023] [Indexed: 12/01/2023]
Abstract
OBJECTIVE Vaccines for the deadliest brain tumor - glioblastoma (GBM) - are generally based on targeting growth factors or their receptors, often using antibodies. The vaccines described in the review were prepared to suppress the principal cancer growth factor - IGF-I, using anti-gene approaches either of antisense (AS) or of triple helix (TH) type. Our objective was to increase the median survival of patients treated with AS and TH cell vaccines. METHODOLOGY The cells were transfected in vitro by both constructed IGF-I AS and IGF-I TH expression episomal vectors; part of these cells was co-cultured with plant phytochemicals, modulating IGF-I expression. Both AS and TH approaches completely suppressed IGF-I expression and induced MHC-1 / B7 immunogenicity related to the IGF-I receptor signal. RESULTS This immunogenicity proved to be stronger in IGF-I TH than in IGF-I AS-prepared cell vaccines, especially in TH / phytochemical cells. The AS and TH vaccines generated an important TCD8+ and TCD8+CD11b- immune response in treated GBM patients and increased the median survival of patients up to 17-18 months, particularly using TH vaccines; in some cases, 2- and 3-year survival was reported. These clinical results were compared with those obtained in therapies targeting other growth factors. CONCLUSION The anti-gene IGF-I vaccines continue to be applied in current GBM personalized medicine. Technical improvements in the preparation of AS and TH vaccines to increase MHC-1 and B7 immunogenicity have, in parallel, allowed to increase in the median survival of patients.
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Affiliation(s)
- Annabelle Trojan
- INSERM UMR 1197, Cancer Center & University of Paris / Saclay, PO Box: 94802 Villejuif, France
- Faculty of Medicine, University of Cartagena, PO Box: 130014 Cartagena de Indias, Colombia
| | - Yu-Chun Lone
- INSERM UMR 1197, Cancer Center & University of Paris / Saclay, PO Box: 94802 Villejuif, France
- CEDEA / ICGT - Center of Oncological Diseases Diagnosis, PO Box: 110231 Bogota, Colombia
| | - Ignacio Briceno
- Faculty of Medicine, University of La Sabana, PO Box: 250008 Chia, Colombia
| | - Jerzy Trojan
- INSERM UMR 1197, Cancer Center & University of Paris / Saclay, PO Box: 94802 Villejuif, France
- CEDEA / ICGT - Center of Oncological Diseases Diagnosis, PO Box: 110231 Bogota, Colombia
- National Academy of Medicine - ANM, PO Box: 75272 Paris, France
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7
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Andrade-Brito DE, Núñez-Ríos DL, Martínez-Magaña JJ, Nagamatsu ST, Rompala G, Zillich L, Witt SH, Clark SL, Latig MC, Montalvo-Ortiz JL. Neuronal-specific methylome and hydroxymethylome analysis reveal replicated and novel loci associated with alcohol use disorder. MEDRXIV : THE PREPRINT SERVER FOR HEALTH SCIENCES 2023:2023.11.28.23299094. [PMID: 38105948 PMCID: PMC10725575 DOI: 10.1101/2023.11.28.23299094] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/19/2023]
Abstract
Alcohol use disorder (AUD) is a complex condition associated with adverse health consequences that affect millions of individuals worldwide. Epigenetic modifications, including DNA methylation (5mC), have been associated with AUD and other alcohol-related traits. Epigenome-wide association studies (EWAS) have identified differentially methylated genes associated with AUD in human peripheral and brain tissue. More recently, epigenetic studies of AUD have also evaluated DNA hydroxymethylation (5hmC) in the human brain. However, most of the epigenetic work in postmortem brain tissue has examined bulk tissue. In this study, we investigated neuronal-specific 5mC and 5hmC alterations at CpG sites associated with AUD in the human orbitofrontal cortex (OFC). Neuronal nuclei from the OFC were evaluated in 34 human postmortem brain samples (10 AUD, 24 non-AUD). Reduced representation oxidative bisulfite sequencing was used to assess 5mC and 5hmC at the genome-wide level. Differential 5mC and 5hmC were evaluated using the methylKit R package and significance was set at false discovery rate <0.05 and differential methylation >2. Functional enrichment analyses were performed and replication was evaluated replication in an independent dataset that assessed 5mC and 5hmC of AUD in bulk cortical tissue. We identified 417 5mC and 363 5hmC genome-wide significant differential CpG sites associated with AUD, with 59% in gene promoters. We also identified genes previously implicated in alcohol consumption, such as SYK, CHRM2, DNMT3A, and GATA4, for 5mC and GATA4, and GAD1, GATA4, DLX1 for 5hmC. Replication was observed for 28 CpG sites from a previous AUD 5mC and 5hmC study, including FOXP1. Lastly, GWAS enrichment analysis showed an association with AUD for differential 5mC genes. This study reveals neuronal-specific methylome and hydroxymethylome dysregulation associated with AUD. We replicated previous findings and identified novel associations with AUD for both 5mC and 5hmC marks within the OFC. Our findings provide new insights into the epigenomic dysregulation of AUD in the human brain.
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Affiliation(s)
- Diego E. Andrade-Brito
- Department of Psychiatry, Yale University School of Medicine, New Haven, CT, USA
- National Center of Post-Traumatic Stress Disorder, VA CT Healthcare, West Haven, CT, USA
| | - Diana L. Núñez-Ríos
- Department of Psychiatry, Yale University School of Medicine, New Haven, CT, USA
- National Center of Post-Traumatic Stress Disorder, VA CT Healthcare, West Haven, CT, USA
| | - José Jaime Martínez-Magaña
- Department of Psychiatry, Yale University School of Medicine, New Haven, CT, USA
- National Center of Post-Traumatic Stress Disorder, VA CT Healthcare, West Haven, CT, USA
| | - Sheila T. Nagamatsu
- Department of Psychiatry, Yale University School of Medicine, New Haven, CT, USA
- National Center of Post-Traumatic Stress Disorder, VA CT Healthcare, West Haven, CT, USA
| | - Gregory Rompala
- Icahn School of Medicine at Mount Sinai, New York City, NY, USA
| | - Lea Zillich
- Department of Genetic Epidemiology in Psychiatry, Central Institute of Mental Health, Medical Faculty Mannheim, Heidelberg University, Mannheim, Germany
| | - Stephanie H. Witt
- Department of Genetic Epidemiology in Psychiatry, Central Institute of Mental Health, Medical Faculty Mannheim, Heidelberg University, Mannheim, Germany
| | - Shaunna L. Clark
- Department of Psychiatry & Behavioral Sciences, Texas A&M University, College Station, Texas, USA
| | - Maria C. Latig
- Facultad de Ciencias, Universidad de los Andes, Bogotá, Colombia
| | | | - Janitza L. Montalvo-Ortiz
- Department of Psychiatry, Yale University School of Medicine, New Haven, CT, USA
- National Center of Post-Traumatic Stress Disorder, VA CT Healthcare, West Haven, CT, USA
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Benali F, Fladt J, Jaroenngarmsamer T, Bala F, Singh N, Ospel JM, Tymianski M, Hill MD, Goyal M, Ganesh A. Association of Brain Atrophy With Functional Outcome and Recovery Trajectories After Thrombectomy: Post Hoc Analysis of the ESCAPE-NA1 Trial. Neurology 2023; 101:e1521-e1530. [PMID: 37591777 PMCID: PMC10585701 DOI: 10.1212/wnl.0000000000207700] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2022] [Accepted: 06/09/2023] [Indexed: 08/19/2023] Open
Abstract
BACKGROUND AND OBJECTIVES Brain frailty may impair the ability of acute stroke patients to cope with the injury, irrespective of their chronologic age, resulting in impaired recovery. We aim to investigate the impact of brain atrophy on functional outcome assessed at different time points after endovascular thrombectomy (EVT). METHODS In this retrospective post hoc analysis of the ESCAPE-NA1 trial, we analyzed CT imaging data for cortical atrophy by using the GCA scale, including region-specific scales, and subcortical atrophy by using the intercaudate distance to inner table width (CC/IT) ratio. The primary outcome was 90-day mRS (ordinal shift analysis), and the secondary outcome was the mRS score over time. Adjustments were made for age, sex, baseline NIHSS, final infarct volume, stroke laterality, total Fazekas score, and nerinetide-alteplase interaction. Sensitivity analyses were additionally performed in only those patients for whom MRI data were available. RESULTS Of 1,102 participants (mean age of 69.5 ± 13.7 years; 554 men), 818 (74%) had GCA = 0, 220 (20%) had GCA = 1, and 64 (6%) had GCA = 2/3. The median CC/IT ratio was 0.12 (IQR0.10-0.15). Cortical atrophy (GCA ≥ 1 vs GCA 0) was associated with worse 90-day mRS (acOR = 1.62 [95% CI 1.22-2.16]; p = 0.001), lower rates of 90-day mRS0-2 (aOR = 0.65 [95% CI 0.45-0.94]; p = 0.022), and higher mortality (aOR = 2.12 [95% CI 1.28-3.5]; p = 0.003), regardless of the region assessed. Subcortical atrophy was associated with worse 90-day mRS (acOR [per 0.01 increase in CC/IT ratio] = 1.07 [95% CI 1.04-1.11]; p < 0.001) and lower rates of 90-day mRS0-2 (aOR = 0.92 [95% CI 0.88-0.97]; p = 0.001). Furthermore, with various degrees of atrophy, we observed heterogeneity in mRS measurements during follow-up: worse mRS scores for higher atrophy grades (p < 0.001). Compared with participants with GCA = 0, the mRS for participants with GCA = 1 was higher at 30 days (adjusted difference = 0.41 [95% CI 0.18-0.65]) and remained worse at 90 days (adjusted difference = 0.72 [95% CI 0.49-0.95]). Similar effects were seen for participants with worse cortical atrophy, regardless of the region assessed, and worse subcortical atrophy. Furthermore, 26/63(41%) and 124/274(45%) patients with severe cortical/subcortical atrophy (GCA 2/3 and highest CC/IT ratio quartile, respectively) achieved good functional outcome (mRS0-2), compared with 539/812(66.4%) with no cortical atrophy and 209/274(76%) in the lowest CC/IT ratio quartile. DISCUSSION In this large RCT-derived population, participants with brain atrophy, as visually assessed on acute noncontrast computed tomography imaging, showed less favorable stroke recovery after EVT and worse 90-day functional outcomes compared with participants without brain atrophy. This may support physicians with recovery expectations when planning post-EVT care with patients and their families.
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Affiliation(s)
- Faysal Benali
- From the Maastricht University Medical Center+ (MUMC+) (F. Benali); Calgary Stroke Program (F. Benali, J.F., T.J., F. Bala, N.S., J.M.O., M.D.H., M.G., A.G.), Department of Clinical Neurosciences, University of Calgary Cumming School of Medicine; and NoNO (M.T.), Toronto, ON, Canada
| | - Joachim Fladt
- From the Maastricht University Medical Center+ (MUMC+) (F. Benali); Calgary Stroke Program (F. Benali, J.F., T.J., F. Bala, N.S., J.M.O., M.D.H., M.G., A.G.), Department of Clinical Neurosciences, University of Calgary Cumming School of Medicine; and NoNO (M.T.), Toronto, ON, Canada
| | - Tanaporn Jaroenngarmsamer
- From the Maastricht University Medical Center+ (MUMC+) (F. Benali); Calgary Stroke Program (F. Benali, J.F., T.J., F. Bala, N.S., J.M.O., M.D.H., M.G., A.G.), Department of Clinical Neurosciences, University of Calgary Cumming School of Medicine; and NoNO (M.T.), Toronto, ON, Canada
| | - Fouzi Bala
- From the Maastricht University Medical Center+ (MUMC+) (F. Benali); Calgary Stroke Program (F. Benali, J.F., T.J., F. Bala, N.S., J.M.O., M.D.H., M.G., A.G.), Department of Clinical Neurosciences, University of Calgary Cumming School of Medicine; and NoNO (M.T.), Toronto, ON, Canada
| | - Nishita Singh
- From the Maastricht University Medical Center+ (MUMC+) (F. Benali); Calgary Stroke Program (F. Benali, J.F., T.J., F. Bala, N.S., J.M.O., M.D.H., M.G., A.G.), Department of Clinical Neurosciences, University of Calgary Cumming School of Medicine; and NoNO (M.T.), Toronto, ON, Canada
| | - Johanna Maria Ospel
- From the Maastricht University Medical Center+ (MUMC+) (F. Benali); Calgary Stroke Program (F. Benali, J.F., T.J., F. Bala, N.S., J.M.O., M.D.H., M.G., A.G.), Department of Clinical Neurosciences, University of Calgary Cumming School of Medicine; and NoNO (M.T.), Toronto, ON, Canada
| | - Michael Tymianski
- From the Maastricht University Medical Center+ (MUMC+) (F. Benali); Calgary Stroke Program (F. Benali, J.F., T.J., F. Bala, N.S., J.M.O., M.D.H., M.G., A.G.), Department of Clinical Neurosciences, University of Calgary Cumming School of Medicine; and NoNO (M.T.), Toronto, ON, Canada
| | - Michael D Hill
- From the Maastricht University Medical Center+ (MUMC+) (F. Benali); Calgary Stroke Program (F. Benali, J.F., T.J., F. Bala, N.S., J.M.O., M.D.H., M.G., A.G.), Department of Clinical Neurosciences, University of Calgary Cumming School of Medicine; and NoNO (M.T.), Toronto, ON, Canada
| | - Mayank Goyal
- From the Maastricht University Medical Center+ (MUMC+) (F. Benali); Calgary Stroke Program (F. Benali, J.F., T.J., F. Bala, N.S., J.M.O., M.D.H., M.G., A.G.), Department of Clinical Neurosciences, University of Calgary Cumming School of Medicine; and NoNO (M.T.), Toronto, ON, Canada
| | - Aravind Ganesh
- From the Maastricht University Medical Center+ (MUMC+) (F. Benali); Calgary Stroke Program (F. Benali, J.F., T.J., F. Bala, N.S., J.M.O., M.D.H., M.G., A.G.), Department of Clinical Neurosciences, University of Calgary Cumming School of Medicine; and NoNO (M.T.), Toronto, ON, Canada.
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9
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Ciarpella F, Zamfir RG, Campanelli A, Pedrotti G, Di Chio M, Bottani E, Decimo I. Generation of mouse hippocampal brain organoids from primary embryonic neural stem cells. STAR Protoc 2023; 4:102413. [PMID: 37454299 PMCID: PMC10384661 DOI: 10.1016/j.xpro.2023.102413] [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: 03/10/2023] [Revised: 04/17/2023] [Accepted: 06/07/2023] [Indexed: 07/18/2023] Open
Abstract
Here we present a protocol to generate standardized cerebral organoids with hippocampal regional specification using morphogen WNT3a. We describe steps for isolating mouse embryonic (E14.5) neural stem cells from the brain subgranular zone, preparing organoids samples for immunofluorescence, calcium imaging, and metabolic profiling. This protocol can be used to generate mouse brain organoids for developmental studies, modeling disease, and drug screening. Organoids can be obtained in one month, thus providing a rapid tool for high-throughput data validation. For complete details on the use and execution of this protocol, please refer to Ciarpella et al. "Murine cerebral organoids develop network of functional neurons and hippocampal brain region identity".1.
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Affiliation(s)
- Francesca Ciarpella
- Section of Pharmacology, Department of Diagnostics and Public Health, University of Verona, Verona 37134, Italy
| | - Raluca Georgiana Zamfir
- Section of Pharmacology, Department of Diagnostics and Public Health, University of Verona, Verona 37134, Italy
| | - Alessandra Campanelli
- Section of Pharmacology, Department of Diagnostics and Public Health, University of Verona, Verona 37134, Italy
| | - Giulia Pedrotti
- Section of Pharmacology, Department of Diagnostics and Public Health, University of Verona, Verona 37134, Italy
| | - Marzia Di Chio
- Section of Pharmacology, Department of Diagnostics and Public Health, University of Verona, Verona 37134, Italy
| | - Emanuela Bottani
- Section of Pharmacology, Department of Diagnostics and Public Health, University of Verona, Verona 37134, Italy
| | - Ilaria Decimo
- Section of Pharmacology, Department of Diagnostics and Public Health, University of Verona, Verona 37134, Italy.
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10
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Clemente-Suárez VJ, Redondo-Flórez L, Beltrán-Velasco AI, Ramos-Campo DJ, Belinchón-deMiguel P, Martinez-Guardado I, Dalamitros AA, Yáñez-Sepúlveda R, Martín-Rodríguez A, Tornero-Aguilera JF. Mitochondria and Brain Disease: A Comprehensive Review of Pathological Mechanisms and Therapeutic Opportunities. Biomedicines 2023; 11:2488. [PMID: 37760929 PMCID: PMC10526226 DOI: 10.3390/biomedicines11092488] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2023] [Revised: 09/02/2023] [Accepted: 09/04/2023] [Indexed: 09/29/2023] Open
Abstract
Mitochondria play a vital role in maintaining cellular energy homeostasis, regulating apoptosis, and controlling redox signaling. Dysfunction of mitochondria has been implicated in the pathogenesis of various brain diseases, including neurodegenerative disorders, stroke, and psychiatric illnesses. This review paper provides a comprehensive overview of the intricate relationship between mitochondria and brain disease, focusing on the underlying pathological mechanisms and exploring potential therapeutic opportunities. The review covers key topics such as mitochondrial DNA mutations, impaired oxidative phosphorylation, mitochondrial dynamics, calcium dysregulation, and reactive oxygen species generation in the context of brain disease. Additionally, it discusses emerging strategies targeting mitochondrial dysfunction, including mitochondrial protective agents, metabolic modulators, and gene therapy approaches. By critically analysing the existing literature and recent advancements, this review aims to enhance our understanding of the multifaceted role of mitochondria in brain disease and shed light on novel therapeutic interventions.
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Affiliation(s)
- Vicente Javier Clemente-Suárez
- Faculty of Sports Sciences, Universidad Europea de Madrid, Tajo Street, s/n, 28670 Madrid, Spain; (V.J.C.-S.); (J.F.T.-A.)
- Group de Investigación en Cultura, Educación y Sociedad, Universidad de la Costa, Barranquilla 080002, Colombia
| | - Laura Redondo-Flórez
- Department of Health Sciences, Faculty of Biomedical and Health Sciences, Universidad Europea de Madrid, C/Tajo s/n, Villaviciosa de Odón, 28670 Madrid, Spain
| | - Ana Isabel Beltrán-Velasco
- Psychology Department, Facultad de Ciencias de la Vida y la Naturaleza, Universidad Antonio de Nebrija, 28240 Madrid, Spain
| | - Domingo Jesús Ramos-Campo
- LFE Research Group, Department of Health and Human Performance, Faculty of Physical Activity and Sport Science-INEF, Universidad Politécnica de Madrid, 28040 Madrid, Spain
| | - Pedro Belinchón-deMiguel
- Department of Nursing and Nutrition, Faculty of Biomedical and Health Sciences, Universidad Europea de Madrid, 28670 Villaviciosa de Odón, Spain;
| | | | - Athanasios A. Dalamitros
- Laboratory of Evaluation of Human Biological Performance, School of Physical Education and Sport Sciences, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece;
| | - Rodrigo Yáñez-Sepúlveda
- Faculty of Education and Social Sciences, Universidad Andres Bello, Viña del Mar 2520000, Chile;
| | - Alexandra Martín-Rodríguez
- Faculty of Sports Sciences, Universidad Europea de Madrid, Tajo Street, s/n, 28670 Madrid, Spain; (V.J.C.-S.); (J.F.T.-A.)
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11
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Kim JT, Cho SM, Youn DH, Hong EP, Park CH, Lee Y, Jung H, Jeon JP. Therapeutic Effect of a Hydrogel-based Neural Stem Cell Delivery Sheet for Mild Traumatic Brain Injury. Acta Biomater 2023:S1742-7061(23)00351-3. [PMID: 37356785 DOI: 10.1016/j.actbio.2023.06.027] [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: 01/02/2023] [Revised: 06/18/2023] [Accepted: 06/20/2023] [Indexed: 06/27/2023]
Abstract
OBJECTIVE There are no effective clinically applicable treatments for neuronal dysfunction after mild traumatic brain injury (TBI). Here, we evaluated the therapeutic effect of a new delivery method of mouse neural stem cell (mNSC) spheroids using a hydrogel, in terms of improvement in damaged cortical lesions and cognitive impairment after mild TBI. METHODS mNSCs were isolated from the subventricular zone and subgranular zone by a hydrogel-based culture system. GFP-transduced mNSCs were generated into spheroids and wrapped into a sheet for transplantation. Male C57BL/6J mice were randomly divided into four groups: sham operation, TBI, TBI with mNSC spheroids, and TBI with mNSC spheroid sheet transplantation covering the damaged cortex. Histopathological and immunohistochemical features and cognitive function were evaluated 7, 14, and 28 days after transplantation following TBI. RESULTS Hydrogel-based culture systems and mNSC isolation were successfully established from the adult mice. Essential transcription factors for NSCs, such as SOX2, PAX6, Olig2, nestin, and doublecortin (DCX), were highly expressed in the mNSCs. A transplanted hydrogel-based mNSC spheroid sheet showed good engraftment and survival ability, differentiated into TUJ1-positive neurons, promoted angiogenesis, and reduced neuronal degeneration. Also, TBI mice treated with mNSC spheroid sheet transplantation exhibited a significantly increased preference for a new object, suggesting improved cognitive function compared to the mNSC spheroids or no treatment groups. CONCLUSION Transplantation with a hydrogel-based mNSC spheroid sheet showed engraftment, migration, and stability of delivered cells in a hostile microenvironment after TBI, resulting in improved cognitive function via reconstruction of the damaged cortex. STATEMENT OF SIGNIFICANCE This study presents the therapeutic effect of a new delivery method of mouse neural stem cells spheroids using a hydrogel, in terms of improvement in damaged cortical lesions and cognitive impairment after traumatic brain injury. Collagen/fibrin hydrogel allowed long-term survival and migratory ability of NSCs spheroids. Furthermore, transplanted hydrogel-based mNSCs spheroids sheet showed good engraftment, migration, and stability of delivered cells in a hostile microenvironment, resulting in reconstruction of the damaged cortex and improved cognitive function after TBI. Therefore, we suggest that a hydrogel-based mNSCs spheroids sheet could help to improve cognitive impairment after TBI.
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Affiliation(s)
- Jong-Tae Kim
- Institute of New Frontier Research, Hallym University College of Medicine, Chuncheon, Korea
| | - Sung Min Cho
- Department of Neurosurgery, Yonsei University Wonju College of Medicine, Wonju, Korea
| | - Dong Hyuk Youn
- Institute of New Frontier Research, Hallym University College of Medicine, Chuncheon, Korea
| | - Eun Pyo Hong
- Institute of New Frontier Research, Hallym University College of Medicine, Chuncheon, Korea
| | - Chan Hum Park
- Institute of New Frontier Research, Hallym University College of Medicine, Chuncheon, Korea
| | - Younghyurk Lee
- Institute of New Frontier Research, Hallym University College of Medicine, Chuncheon, Korea
| | - Harry Jung
- Institute of New Frontier Research, Hallym University College of Medicine, Chuncheon, Korea
| | - Jin Pyeong Jeon
- Department of Neurosurgery, Hallym University College of Medicine, Chuncheon, Korea.
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12
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Torres J, Pereira JM, Marques-Oliveira R, Costa I, Gil-Martins E, Silva R, Remião F, Peixoto AF, Sousa Lobo JM, Silva AC. An In Vitro Evaluation of the Potential Neuroprotective Effects of Intranasal Lipid Nanoparticles Containing Astaxanthin Obtained from Different Sources: Comparative Studies. Pharmaceutics 2023; 15:pharmaceutics15041035. [PMID: 37111521 PMCID: PMC10142572 DOI: 10.3390/pharmaceutics15041035] [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: 02/09/2023] [Revised: 03/14/2023] [Accepted: 03/20/2023] [Indexed: 04/29/2023] Open
Abstract
The intranasal route has been suggested as a promising alternative to improve the direct transport of molecules to the brain, avoiding the need to cross the blood-brain barrier (BBB). In this area, the use of lipid nanoparticles, namely solid lipid nanoparticles (SLN) and nanostructured lipid carriers (NLC), has been highlighted as a promising strategy to improve the treatment of neurodegenerative diseases. In this work, formulations containing SLN and NLC that were loaded with astaxanthin that was obtained from different sources (astaxanthin extract (AE) from the algae Haematococcus pluvialis and pure astaxanthin (PA) from the fungi Blakeslea trispora) were prepared for nose-to-brain administration, and comparative in vitro experiments were performed to evaluate the biocompatibility of the formulations with nasal (RPMI 2650) and neuronal (SH-SY5Y) cells. Afterwards, the antioxidant activity of the formulations was evaluated for its potential neuroprotective effects, using different chemical aggressors. Finally, the cellular uptake of the astaxanthin was evaluated for the formulations that showed the greatest neuroprotection of the neuronal cells against chemical-induced damage. On the production day, all the formulations showed a particle size, a high encapsulation efficiency (EE), the presence of nanoparticles with a typical spherical shape, and a polydispersity index (PDI) and zeta potential (ZP) that are suitable for nose-to-brain administration. After three months of storage at room temperature, no significant changes were observed in the characterization parameters, predicting a good long-term stability. Furthermore, these formulations were shown to be safe with concentrations of up to 100 µg/mL in differentiated SH-SY5Y and RPMI 2650 cells. Regarding neuroprotection studies, the PA-loaded SLN and NLC formulations showed an ability to counteract some mechanisms of neurodegeneration, including oxidative stress. Moreover, when compared with the PA-loaded SLN, the PA-loaded NLC showed greater neuroprotective effects against the cytotoxicity induced by aggressors. In contrast, the AE-loaded SLN and NLC formulations showed no significant neuroprotective effects. Although further studies are needed to confirm these neuroprotective effects, the results of this study suggest that the intranasal administration of PA-loaded NLC may be a promising alternative to improve the treatment of neurodegenerative diseases.
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Affiliation(s)
- Joana Torres
- UCIBIO, REQUIMTE, Laboratory of Pharmaceutical Technology/Centre of Research in Pharmaceutical Sciences, Faculty of Pharmacy, University of Porto, 4099-002 Porto, Portugal
- Associate Laboratory i4HB, Institute for Health and Bioeconomy, Faculty of Pharmacy, University of Porto, 4099-002 Porto, Portugal
| | - José Miguel Pereira
- Associate Laboratory i4HB, Institute for Health and Bioeconomy, Faculty of Pharmacy, University of Porto, 4099-002 Porto, Portugal
- UCIBIO, REQUIMTE, Laboratory of Toxicology, Department of Biological Sciences, Faculty of Pharmacy, University of Porto, 4099-002 Porto, Portugal
| | - Rita Marques-Oliveira
- Associate Laboratory i4HB, Institute for Health and Bioeconomy, Faculty of Pharmacy, University of Porto, 4099-002 Porto, Portugal
- UCIBIO, REQUIMTE, Laboratory of Toxicology, Department of Biological Sciences, Faculty of Pharmacy, University of Porto, 4099-002 Porto, Portugal
| | - Inês Costa
- Associate Laboratory i4HB, Institute for Health and Bioeconomy, Faculty of Pharmacy, University of Porto, 4099-002 Porto, Portugal
- UCIBIO, REQUIMTE, Laboratory of Toxicology, Department of Biological Sciences, Faculty of Pharmacy, University of Porto, 4099-002 Porto, Portugal
| | - Eva Gil-Martins
- Associate Laboratory i4HB, Institute for Health and Bioeconomy, Faculty of Pharmacy, University of Porto, 4099-002 Porto, Portugal
- UCIBIO, REQUIMTE, Laboratory of Toxicology, Department of Biological Sciences, Faculty of Pharmacy, University of Porto, 4099-002 Porto, Portugal
| | - Renata Silva
- Associate Laboratory i4HB, Institute for Health and Bioeconomy, Faculty of Pharmacy, University of Porto, 4099-002 Porto, Portugal
- UCIBIO, REQUIMTE, Laboratory of Toxicology, Department of Biological Sciences, Faculty of Pharmacy, University of Porto, 4099-002 Porto, Portugal
| | - Fernando Remião
- Associate Laboratory i4HB, Institute for Health and Bioeconomy, Faculty of Pharmacy, University of Porto, 4099-002 Porto, Portugal
- UCIBIO, REQUIMTE, Laboratory of Toxicology, Department of Biological Sciences, Faculty of Pharmacy, University of Porto, 4099-002 Porto, Portugal
| | - Andreia Filipa Peixoto
- LAQV/REQUIMTE, Department of Chemistry and Biochemistry, Faculty of Sciences, University of Porto, 4099-002 Porto, Portugal
| | - José Manuel Sousa Lobo
- UCIBIO, REQUIMTE, Laboratory of Pharmaceutical Technology/Centre of Research in Pharmaceutical Sciences, Faculty of Pharmacy, University of Porto, 4099-002 Porto, Portugal
- Associate Laboratory i4HB, Institute for Health and Bioeconomy, Faculty of Pharmacy, University of Porto, 4099-002 Porto, Portugal
| | - Ana Catarina Silva
- UCIBIO, REQUIMTE, Laboratory of Pharmaceutical Technology/Centre of Research in Pharmaceutical Sciences, Faculty of Pharmacy, University of Porto, 4099-002 Porto, Portugal
- Associate Laboratory i4HB, Institute for Health and Bioeconomy, Faculty of Pharmacy, University of Porto, 4099-002 Porto, Portugal
- FP-I3ID (Instituto de Investigação, Inovação e Desenvolvimento), FP-BHS (Biomedical and Health Sciences Research Unit), Faculty of Health Sciences, University Fernando Pessoa, 4099-002 Porto, Portugal
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Beresewicz-Haller M. Hippocampal region-specific endogenous neuroprotection as an approach in the search for new neuroprotective strategies in ischemic stroke. Fiction or fact? Neurochem Int 2023; 162:105455. [PMID: 36410452 DOI: 10.1016/j.neuint.2022.105455] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2022] [Revised: 11/03/2022] [Accepted: 11/17/2022] [Indexed: 11/23/2022]
Abstract
Ischemic stroke is the leading cause of death and long-term disability worldwide, and, while considerable progress has been made in understanding its pathophysiology, the lack of effective treatments remains a major concern. In that context, receiving more and more consideration as a promising therapeutic method is the activation of natural adaptive mechanisms (endogenous neuroprotection) - an approach that seeks to enhance and/or stimulate the endogenous processes of plasticity and protection of the neuronal system that trigger the brain's intrinsic capacity for self-defence. Ischemic preconditioning is a classic example of endogenous neuroprotection, being the process by which one or more brief, non-damaging episodes of ischemia-reperfusion (I/R) induce tissue resistance to subsequent prolonged, damaging ischemia. Another less-known example is resistance to an I/R episode mounted by the hippocampal region consisting of CA2, CA3, CA4 and the dentate gyrus (here abbreviated to CA2-4, DG). This can be contrasted with the ischemia-vulnerable CA1 region. There is not yet a good understanding of these different sensitivities of the hippocampal regions, and hence of the endogenous neuroprotection characteristic of CA2-4, DG. However, this region is widely reported to have properties distinct from CA1, and capable of generating resistance to an I/R episode. These include activation of neurotrophic and neuroprotective factors, greater activation of anti-excitotoxic and anti-oxidant mechanisms, increased plasticity potential, a greater energy reserve and improved mitochondrial function. This review seeks to summarize properties of CA2-4, DG in the context of endogenous neuroprotection, and then to assess the potential utility of these properties to therapeutic approaches. In so doing, it appears to represent the first such addressing of the issue of ischemia resistance attributable to CA2-4, DG.
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Surya K, Manickam N, Jayachandran KS, Kandasamy M, Anusuyadevi M. Resveratrol Mediated Regulation of Hippocampal Neuroregenerative Plasticity via SIRT1 Pathway in Synergy with Wnt Signaling: Neurotherapeutic Implications to Mitigate Memory Loss in Alzheimer's Disease. J Alzheimers Dis 2023; 94:S125-S140. [PMID: 36463442 PMCID: PMC10473144 DOI: 10.3233/jad-220559] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Alzheimer's disease (AD) is a major form of dementia. Abnormal amyloidogenic event-mediated degeneration of cholinergic neurons in the cognitive centers of the brain has been attributed to neuropathological sequelae and behavioral deficits in AD. Besides, impaired adult neurogenesis in the hippocampus has experimentally been realized as an underlying cause of dementia regardless of neurodegeneration. Therefore, nourishing the neurogenic process in the hippocampus has been considered an effective therapeutic strategy to mitigate memory loss. In the physiological state, the Wnt pathway has been identified as a potent mitogenic generator in the hippocampal stem cell niche. However, downstream components of Wnt signaling have been noticed to be downregulated in AD brains. Resveratrol (RSV) is a potent Sirtuin1 (SIRT1) enhancer that facilitates neuroprotection and promotes neurogenesis in the hippocampus of the adult brain. While SIRT1 is an important positive regulator of Wnt signaling, ample reports indicate that RSV treatment strongly mediates the fate determination of stem cells through Wnt signaling. However, the possible therapeutic roles of RSV-mediated SIRT1 enhancement on the regulation of hippocampal neurogenesis and reversal of memory loss through the Wnt signaling pathway have not been addressed yet. Taken together, this review describes RSV-mediated effects on the regulation of hippocampal neurogenesis via the activation of SIRT1 in synergy with the Wnt signaling. Further, the article emphasizes a hypothesis that RSV treatment can provoke the activation of quiescent neural stem cells and prime their neurogenic capacity in the hippocampus via Wnt signaling in AD.
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Affiliation(s)
- Kumar Surya
- Department of Biochemistry, Molecular Neuro-gerontology Laboratory, School of Life Sciences, Bharathidasan University, Tiruchirappalli, Tamil Nadu, India
| | - Nivethitha Manickam
- Department of Animal Science, Laboratory of Stem Cells and Neuroregeneration, School of Life Sciences, Bharathidasan University, Tiruchirappalli, Tamil Nadu, India
| | - Kesavan Swaminathan Jayachandran
- Department of Bioinformatics, Molecular Cardiology and Drug Discovery Laboratory, School of Life Sciences, Bharathidasan University, Tiruchirappalli, Tamil Nadu, India
| | - Mahesh Kandasamy
- Department of Animal Science, Laboratory of Stem Cells and Neuroregeneration, School of Life Sciences, Bharathidasan University, Tiruchirappalli, Tamil Nadu, India
- University Grants Commission-Faculty Recharge Programme (UGC-FRP), New Delhi, India
| | - Muthuswamy Anusuyadevi
- Department of Biochemistry, Molecular Neuro-gerontology Laboratory, School of Life Sciences, Bharathidasan University, Tiruchirappalli, Tamil Nadu, India
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15
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Rastoldo G, Watabe I, Lapotre A, Tonetto A, López-Juárez A, Tighilet B. Vestibular Nuclei: A New Neural Stem Cell Niche? Cells 2022; 11:cells11223598. [PMID: 36429025 PMCID: PMC9688605 DOI: 10.3390/cells11223598] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2022] [Revised: 11/06/2022] [Accepted: 11/10/2022] [Indexed: 11/16/2022] Open
Abstract
We previously reported adult reactive neurogliogenesis in the deafferented vestibular nuclei following unilateral vestibular neurectomy (UVN) in the feline and the rodent model. Recently, we demonstrated that UVN induced a significant increase in a population of cells colocalizing the transcription factor sex determining region Y-box 2 (SOX2) and the glial fibrillary acidic protein (GFAP) three days after the lesion in the deafferented medial vestibular nucleus. These two markers expressed on the same cell population could indicate the presence of lesion-reactive multipotent neural stem cells in the vestibular nuclei. The aim of our study was to provide insight into the potential neurogenic niche status of the vestibular nuclei in physiological conditions by using specific markers of stem cells (Nestin, SOX2, GFAP), cell proliferation (BrdU) and neuronal differentiation (NeuN). The present study confirmed the presence of quiescent and activated adult neural stem cells generating some new neurons in the vestibular nuclei of control rats. These unique features provide evidence that the vestibular nuclei represent a novel NSC site for the generation of neurons and/or glia in the adult rodent under physiological conditions.
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Affiliation(s)
- Guillaume Rastoldo
- Aix Marseille Université-CNRS, Laboratoire de Neurosciences Cognitives, LNC UMR 7291, 13331 Marseille, France
| | - Isabelle Watabe
- Aix Marseille Université-CNRS, Laboratoire de Neurosciences Cognitives, LNC UMR 7291, 13331 Marseille, France
| | - Agnes Lapotre
- Aix Marseille Université-CNRS, Laboratoire de Neurosciences Cognitives, LNC UMR 7291, 13331 Marseille, France
| | - Alain Tonetto
- Fédération de Recherche Sciences Chimiques Marseille FR 1739, Pôle PRATIM, 13331 Marseille, France
| | - Alejandra López-Juárez
- Department of Chemical, Electronic and Biomedical Engineering, Division of Sciences and Engineering, University of Guanajuato, Guanajuato 38116, Mexico
| | - Brahim Tighilet
- Aix Marseille Université-CNRS, Laboratoire de Neurosciences Cognitives, LNC UMR 7291, 13331 Marseille, France
- GDR Physiopathologie Vestibulaire-Unité GDR2074 CNRS, 13331 Marseille, France
- Correspondence: ; Tel.: +33-413550881; Fax: +33-413550869
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16
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Vijayanathan Y, Hamzah NM, Lim SM, Lim FT, Tan MP, Majeed ABA, Ramasamy K. Newly regenerated dopaminergic neurons in 6-OHDA-lesioned adult zebrafish brain proliferate in the Olfactory bulb and telencephalon, but migrate to, differentiate and mature in the diencephalon. Brain Res Bull 2022; 190:218-233. [PMID: 36228872 DOI: 10.1016/j.brainresbull.2022.10.001] [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: 04/10/2022] [Revised: 09/20/2022] [Accepted: 10/04/2022] [Indexed: 12/24/2022]
Abstract
In order to understand the biological processes underlying dopaminergic neurons (DpN) regeneration in a 6-hydroxydopamine(6-OHDA)-induced adult zebrafish-based Parkinson's disease model, this study investigated the specific phases of neuroregeneration in a time-based manner. Bromodeoxyuridine (BrdU) was administered 24 h before the harvest of brain tissues at day three, five, seven, nine, 12 and 14 postlesion. Potential migration of proliferative cells was tracked over 14 days postlesion through double-pulse tracking [BrdU and 5-ethynyl-2'-deoxyuridine (EdU)] of cells and immunohistostaining of astrocytes [glial fibrillary acidic protein (GFAP)]. Gene expression of foxa2 and nurr1 (nr4a2a) at day three, nine, 14, 18, 22 and 30 postlesion was quantified using qPCR. Protein expression of foxa2 at day three, seven, 14 and 22 postlesion was validated using the western blot technique. Double labelling [EdU and tyrosine hydroxylase (TH)] of proliferative cells was performed to ascertain their fate after the neuroregeneration processes. It was found that whilst cell proliferation remained unchanged in the area of substantial DpN loss, the ventral diencephalon (vDn), there was a transient increase of cell proliferation in the olfactory bulb (OB) and telencephalon (Tel) seven days postlesion. BrdU-immunoreactive (ir)/ EdU-ir cells and activated astrocytes were later found to be significantly increased in the vDn and its nearby area (Tel) 14 days postlesion. There was a significant but transient downregulation of foxa2 at day three and nine postlesion, and nr4a2a at day three, nine and 14 postlesion. The expression of both genes remained unchanged in the OB and Tel. There was a transient downregulation of foxa2 protein expression at day three and seven postlesion. The significant increase of EdU-ir/ TH-ir cells in the vDn 30 days postlesion indicates maturation of proliferative cells (formed between day five-seven postlesion) into DpN. The present findings warrant future investigation of critical factors that govern the distinctive phases of DpN regeneration.
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Affiliation(s)
- Yuganthini Vijayanathan
- Collaborative Drug Discovery Research (CDDR) Group and Brain Degeneration and Therapeutics Group, Faculty of Pharmacy, Universiti Teknologi MARA (UiTM), Cawangan Selangor, Kampus Puncak Alam, 42300 Bandar Puncak Alam, Selangor Darul Ehsan, Malaysia; Department of Medicine, Faculty of Medicine, Universiti Malaya, 50603 Kuala Lumpur, Malaysia
| | - Naemah Md Hamzah
- Collaborative Drug Discovery Research (CDDR) Group and Brain Degeneration and Therapeutics Group, Faculty of Pharmacy, Universiti Teknologi MARA (UiTM), Cawangan Selangor, Kampus Puncak Alam, 42300 Bandar Puncak Alam, Selangor Darul Ehsan, Malaysia
| | - Siong Meng Lim
- Collaborative Drug Discovery Research (CDDR) Group and Brain Degeneration and Therapeutics Group, Faculty of Pharmacy, Universiti Teknologi MARA (UiTM), Cawangan Selangor, Kampus Puncak Alam, 42300 Bandar Puncak Alam, Selangor Darul Ehsan, Malaysia
| | - Fei Ting Lim
- Collaborative Drug Discovery Research (CDDR) Group and Brain Degeneration and Therapeutics Group, Faculty of Pharmacy, Universiti Teknologi MARA (UiTM), Cawangan Selangor, Kampus Puncak Alam, 42300 Bandar Puncak Alam, Selangor Darul Ehsan, Malaysia
| | - Maw Pin Tan
- Department of Medicine, Faculty of Medicine, Universiti Malaya, 50603 Kuala Lumpur, Malaysia
| | - Abu Bakar Abdul Majeed
- Collaborative Drug Discovery Research (CDDR) Group and Brain Degeneration and Therapeutics Group, Faculty of Pharmacy, Universiti Teknologi MARA (UiTM), Cawangan Selangor, Kampus Puncak Alam, 42300 Bandar Puncak Alam, Selangor Darul Ehsan, Malaysia.
| | - Kalavathy Ramasamy
- Collaborative Drug Discovery Research (CDDR) Group and Brain Degeneration and Therapeutics Group, Faculty of Pharmacy, Universiti Teknologi MARA (UiTM), Cawangan Selangor, Kampus Puncak Alam, 42300 Bandar Puncak Alam, Selangor Darul Ehsan, Malaysia.
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17
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Keeler JL, Robinson L, Keeler-Schäffeler R, Dalton B, Treasure J, Himmerich H. Growth factors in anorexia nervosa: a systematic review and meta-analysis of cross-sectional and longitudinal data. World J Biol Psychiatry 2022; 23:582-600. [PMID: 34875968 DOI: 10.1080/15622975.2021.2015432] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
OBJECTIVES Growth factors are signalling molecules that play roles in the survival, proliferation, migration, and differentiation of cells. Studies have found alterations in specific growth factors in anorexia nervosa (AN). METHODS This systematic review and meta-analysis examined articles from three databases, measuring growth factors in AN cross-sectionally and longitudinally, and in recovered AN (rec-AN) cross-sectionally. Random-effects meta-analyses were conducted for brain-derived neurotrophic factor (BDNF) and insulin growth factor-I (IGF-1) for cross-sectional and longitudinal studies. RESULTS A total of 82 studies were included: 56 cross-sectional (BDNF: n = 15; IGF-1: n = 41) and 24 longitudinal (BDNF: n = 5; IGF-1: n = 19) were meta-analysed and 20 studies were narratively synthesised. In cross-sectional analyses, BDNF and IGF-1 were lower in AN compared to controls, and BDNF was marginally greater in rec-AN compared to controls. In longitudinal meta-analyses, BDNF and IGF-1 increased from baseline to follow-up. Cross-sectional subgroup analyses revealed no differences in BDNF between controls and AN binge-eating/purging subtypes. CONCLUSIONS It is likely that the low BDNF and IGF-1 levels found in AN are consequences of starvation, which are reversible with weight restoration. The increase in BDNF and IGF-1 during therapeutic weight restoration might improve neuroplasticity, which is the basis of learning, and thus psychotherapeutic success.
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Affiliation(s)
- Johanna Louise Keeler
- Section of Eating Disorders, Department of Psychological Medicine, Institute of Psychiatry, Psychology & Neuroscience, King's College London, London, UK
| | - Lauren Robinson
- Section of Eating Disorders, Department of Psychological Medicine, Institute of Psychiatry, Psychology & Neuroscience, King's College London, London, UK
| | | | - Bethan Dalton
- Section of Eating Disorders, Department of Psychological Medicine, Institute of Psychiatry, Psychology & Neuroscience, King's College London, London, UK
| | - Janet Treasure
- Section of Eating Disorders, Department of Psychological Medicine, Institute of Psychiatry, Psychology & Neuroscience, King's College London, London, UK
| | - Hubertus Himmerich
- Section of Eating Disorders, Department of Psychological Medicine, Institute of Psychiatry, Psychology & Neuroscience, King's College London, London, UK
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18
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Zeng M, Zhang R, Yang Q, Guo L, Zhang X, Yu B, Gan J, Yang Z, Li H, Wang Y, Jiang X, Lu B. Pharmacological therapy to cerebral ischemia-reperfusion injury: Focus on saponins. Biomed Pharmacother 2022; 155:113696. [PMID: 36116247 DOI: 10.1016/j.biopha.2022.113696] [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: 06/08/2022] [Revised: 08/30/2022] [Accepted: 09/13/2022] [Indexed: 11/15/2022] Open
Abstract
Secondary insult from cerebral ischemia-reperfusion injury (CIRI) is a major risk factor for poor prognosis of cerebral ischemia. Saponins are steroid or triterpenoid glycosides with various pharmacological activities that are effective in treating CIRI. By browsing the literature from 2001 to 2021, 55 references involving 24 kinds of saponins were included. Saponins were shown to relieve CIRI by inhibiting oxidation stress, neuroinflammation, and apoptosis, restoring BBB integrity, and promoting neurogenesis and angiogenesis. This review summarizes and classifies several common saponins and their mechanisms in relieving CIRI. Information provided in this review will benefit researchers to design, research and develop new medicines to treat CIRI-related conditions with saponins.
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Affiliation(s)
- Miao Zeng
- School of Integrative Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin 301617, China
| | - Ruifeng Zhang
- School of Integrative Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin 301617, China
| | - Qiuyue Yang
- School of Integrative Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin 301617, China
| | - Lin Guo
- School of Integrative Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin 301617, China
| | - Xiaolu Zhang
- School of Integrative Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin 301617, China
| | - Bin Yu
- School of Integrative Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin 301617, China
| | - Jiali Gan
- School of Integrative Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin 301617, China
| | - Zhen Yang
- School of Traditional Chinese Materia Medica, Tianjin University of Traditional Chinese Medicine, Tianjin 301617, China
| | - Huhu Li
- School of Integrative Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin 301617, China
| | - Yu Wang
- School of Integrative Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin 301617, China
| | - Xijuan Jiang
- School of Integrative Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin 301617, China.
| | - Bin Lu
- School of Integrative Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin 301617, China.
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19
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Lamptey RNL, Chaulagain B, Trivedi R, Gothwal A, Layek B, Singh J. A Review of the Common Neurodegenerative Disorders: Current Therapeutic Approaches and the Potential Role of Nanotherapeutics. Int J Mol Sci 2022; 23:ijms23031851. [PMID: 35163773 PMCID: PMC8837071 DOI: 10.3390/ijms23031851] [Citation(s) in RCA: 136] [Impact Index Per Article: 68.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2021] [Revised: 02/02/2022] [Accepted: 02/03/2022] [Indexed: 11/16/2022] Open
Abstract
Neurodegenerative disorders are primarily characterized by neuron loss. The most common neurodegenerative disorders include Alzheimer’s and Parkinson’s disease. Although there are several medicines currently approved for managing neurodegenerative disorders, a large majority of them only help with associated symptoms. This lack of pathogenesis-targeting therapies is primarily due to the restrictive effects of the blood–brain barrier (BBB), which keeps close to 99% of all “foreign substances” out of the brain. Since their discovery, nanoparticles have been successfully used for targeted delivery into many organs, including the brain. This review briefly describes the pathophysiology of Alzheimer’s, Parkinson’s disease, and amyotrophic lateral sclerosis, and their current management approaches. We then highlight the major challenges of brain-drug delivery, followed by the role of nanotherapeutics for the diagnosis and treatment of various neurological disorders.
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Affiliation(s)
| | | | | | | | - Buddhadev Layek
- Correspondence: (B.L.); (J.S.); Tel.: +1-701-231-7906 (B.L.); +1-701-231-7943 (J.S.); Fax: +1-701-231-8333 (B.L. & J.S.)
| | - Jagdish Singh
- Correspondence: (B.L.); (J.S.); Tel.: +1-701-231-7906 (B.L.); +1-701-231-7943 (J.S.); Fax: +1-701-231-8333 (B.L. & J.S.)
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20
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Ciarpella F, Zamfir RG, Campanelli A, Ren E, Pedrotti G, Bottani E, Borioli A, Caron D, Di Chio M, Dolci S, Ahtiainen A, Malpeli G, Malerba G, Bardoni R, Fumagalli G, Hyttinen J, Bifari F, Palazzolo G, Panuccio G, Curia G, Decimo I. Murine cerebral organoids develop network of functional neurons and hippocampal brain region identity. iScience 2021; 24:103438. [PMID: 34901791 PMCID: PMC8640475 DOI: 10.1016/j.isci.2021.103438] [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: 06/10/2021] [Revised: 10/13/2021] [Accepted: 11/10/2021] [Indexed: 12/12/2022] Open
Abstract
Brain organoids are in vitro three-dimensional (3D) self-organized neural structures, which can enable disease modeling and drug screening. However, their use for standardized large-scale drug screening studies is limited by their high batch-to-batch variability, long differentiation time (10-20 weeks), and high production costs. This is particularly relevant when brain organoids are obtained from human induced pluripotent stem cells (iPSCs). Here, we developed, for the first time, a highly standardized, reproducible, and fast (5 weeks) murine brain organoid model starting from embryonic neural stem cells. We obtained brain organoids, which progressively differentiated and self-organized into 3D networks of functional neurons with dorsal forebrain phenotype. Furthermore, by adding the morphogen WNT3a, we generated brain organoids with specific hippocampal region identity. Overall, our results showed the establishment of a fast, robust and reproducible murine 3D in vitro brain model that may represent a useful tool for high-throughput drug screening and disease modeling.
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Affiliation(s)
- Francesca Ciarpella
- Section of Pharmacology, Department of Diagnostics and Public Health, University of Verona, P.le Scuro 10, 37134 Verona, Italy
| | - Raluca Georgiana Zamfir
- Section of Pharmacology, Department of Diagnostics and Public Health, University of Verona, P.le Scuro 10, 37134 Verona, Italy
| | - Alessandra Campanelli
- Section of Pharmacology, Department of Diagnostics and Public Health, University of Verona, P.le Scuro 10, 37134 Verona, Italy
| | - Elisa Ren
- Department of Biomedical, Metabolic and Neural Sciences, University of Modena and Reggio Emilia, 41125 Modena, Italy
| | - Giulia Pedrotti
- Section of Pharmacology, Department of Diagnostics and Public Health, University of Verona, P.le Scuro 10, 37134 Verona, Italy
| | - Emanuela Bottani
- Section of Pharmacology, Department of Diagnostics and Public Health, University of Verona, P.le Scuro 10, 37134 Verona, Italy
| | - Andrea Borioli
- Section of Pharmacology, Department of Diagnostics and Public Health, University of Verona, P.le Scuro 10, 37134 Verona, Italy
| | - Davide Caron
- Department of Neuroscience and Brain Technologies (NBT), Istituto Italiano di Tecnologia (IIT), Genova, Italy
| | - Marzia Di Chio
- Section of Pharmacology, Department of Diagnostics and Public Health, University of Verona, P.le Scuro 10, 37134 Verona, Italy
| | - Sissi Dolci
- Section of Pharmacology, Department of Diagnostics and Public Health, University of Verona, P.le Scuro 10, 37134 Verona, Italy
| | - Annika Ahtiainen
- BioMediTech, Faculty of Medicine and Health Technology, Tampere University, 33520 Tampere, Finland
| | - Giorgio Malpeli
- Department of Surgery, Dentistry, Paediatrics and Gynaecology, University of Verona, 37134 Verona, Italy
| | - Giovanni Malerba
- Department of Neurosciences, Biomedicine and Movement Sciences, University of Verona, 37134 Verona, Italy
| | - Rita Bardoni
- Department of Biomedical, Metabolic and Neural Sciences, University of Modena and Reggio Emilia, 41125 Modena, Italy
| | - Guido Fumagalli
- Section of Pharmacology, Department of Diagnostics and Public Health, University of Verona, P.le Scuro 10, 37134 Verona, Italy
| | - Jari Hyttinen
- BioMediTech, Faculty of Medicine and Health Technology, Tampere University, 33520 Tampere, Finland
| | - Francesco Bifari
- Laboratory of Cell Metabolism and Regenerative Medicine, Department of Medical Biotechnology and Translational Medicine, University of Milan, 20133 Milan, Italy
| | - Gemma Palazzolo
- Department of Neuroscience and Brain Technologies (NBT), Istituto Italiano di Tecnologia (IIT), Genova, Italy
| | - Gabriella Panuccio
- Department of Neuroscience and Brain Technologies (NBT), Istituto Italiano di Tecnologia (IIT), Genova, Italy
| | - Giulia Curia
- Department of Biomedical, Metabolic and Neural Sciences, University of Modena and Reggio Emilia, 41125 Modena, Italy
| | - Ilaria Decimo
- Section of Pharmacology, Department of Diagnostics and Public Health, University of Verona, P.le Scuro 10, 37134 Verona, Italy
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21
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Cai NN, Geng Q, Jiang Y, Zhu WQ, Yang R, Zhang BY, Xiao YF, Tang B, Zhang XM. Schisandrin A and B affect the proliferation and differentiation of neural stem cells. J Chem Neuroanat 2021; 119:102058. [PMID: 34896558 DOI: 10.1016/j.jchemneu.2021.102058] [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: 02/21/2021] [Revised: 10/31/2021] [Accepted: 12/06/2021] [Indexed: 01/20/2023]
Abstract
Schisandrin A and B (Sch A and B) are the important components of Asian dietary supplement and phytomedicine Schisandra chinensis (S. chinensis). They can enhance adult neurogenesis in vivo; however, these effects still need to be verified. Here NE-4 C neural stem cells (NSCs) were employed as the in vitro model and treated with Sch A and B at 0.1 μg/mL. EdU (5-Ethynyl-2'-deoxyuridine) labeling showed that both Sch A and B treatments enhanced NSC proliferation. Real-time PCR analysis showed the mRNA abundances of telomerase gene Tert and cell cycle gene Cyclin D1 were significantly up-regulated after the treatments. During the neurosphere induction, Sch B enhanced the neurosphere formation and neuronal differentiation, and increased the neurosphere semidiameters. Detection of the neuron differentiation marker Mapt indicates that both Sch A and B, especially Sch B, benefits the induced neuronal differentiation. Sch B treatment also enhanced mRNA expressions of the neurosphere-specific adhesion molecule Cdh2 and Wnt pathway-related genes including Mmp9, Cyclin D1 and β-catenin. Together, Sch A especially Sch B, promotes the proliferation, affects the survival, differentiation and neurogenesis of NSCs, which is consistent with their in vivo effects. This study provides further clue on the potential neuropharmacological effects of S. chinensis.
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Affiliation(s)
- Ning-Ning Cai
- College of Veterinary Medicine, Jilin University, Changchun 130062, China; Hebei Key Lab of Laboratory Animal Science, Hebei Medical University, Shijiazhuang 050017, China.
| | - Qi Geng
- Hebei Key Lab of Laboratory Animal Science, Hebei Medical University, Shijiazhuang 050017, China
| | - Yu Jiang
- College of Veterinary Medicine, Jilin University, Changchun 130062, China
| | - Wen-Qian Zhu
- College of Veterinary Medicine, Jilin University, Changchun 130062, China
| | - Rui Yang
- College of Veterinary Medicine, Jilin University, Changchun 130062, China
| | - Bo-Yang Zhang
- College of Veterinary Medicine, Jilin University, Changchun 130062, China
| | - Yu-Feng Xiao
- College of Veterinary Medicine, Jilin University, Changchun 130062, China
| | - Bo Tang
- College of Veterinary Medicine, Jilin University, Changchun 130062, China
| | - Xue-Ming Zhang
- College of Veterinary Medicine, Jilin University, Changchun 130062, China.
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22
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Limorenko G, Lashuel HA. Revisiting the grammar of Tau aggregation and pathology formation: how new insights from brain pathology are shaping how we study and target Tauopathies. Chem Soc Rev 2021; 51:513-565. [PMID: 34889934 DOI: 10.1039/d1cs00127b] [Citation(s) in RCA: 48] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Converging evidence continues to point towards Tau aggregation and pathology formation as central events in the pathogenesis of Alzheimer's disease and other Tauopathies. Despite significant advances in understanding the morphological and structural properties of Tau fibrils, many fundamental questions remain about what causes Tau to aggregate in the first place. The exact roles of cofactors, Tau post-translational modifications, and Tau interactome in regulating Tau aggregation, pathology formation, and toxicity remain unknown. Recent studies have put the spotlight on the wide gap between the complexity of Tau structures, aggregation, and pathology formation in the brain and the simplicity of experimental approaches used for modeling these processes in research laboratories. Embracing and deconstructing this complexity is an essential first step to understanding the role of Tau in health and disease. To help deconstruct this complexity and understand its implication for the development of effective Tau targeting diagnostics and therapies, we firstly review how our understanding of Tau aggregation and pathology formation has evolved over the past few decades. Secondly, we present an analysis of new findings and insights from recent studies illustrating the biochemical, structural, and functional heterogeneity of Tau aggregates. Thirdly, we discuss the importance of adopting new experimental approaches that embrace the complexity of Tau aggregation and pathology as an important first step towards developing mechanism- and structure-based therapies that account for the pathological and clinical heterogeneity of Alzheimer's disease and Tauopathies. We believe that this is essential to develop effective diagnostics and therapies to treat these devastating diseases.
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Affiliation(s)
- Galina Limorenko
- Laboratory of Molecular and Chemical Biology of Neurodegeneration, Brain Mind Institute, École Polytechnique Federal de Lausanne (EPFL), CH-1015 Lausanne, Switzerland.
| | - Hilal A Lashuel
- Laboratory of Molecular and Chemical Biology of Neurodegeneration, Brain Mind Institute, École Polytechnique Federal de Lausanne (EPFL), CH-1015 Lausanne, Switzerland.
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23
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Zorzin S, Corsi A, Ciarpella F, Bottani E, Dolci S, Malpeli G, Pino A, Amenta A, Fumagalli GF, Chiamulera C, Bifari F, Decimo I. Environmental Enrichment Induces Meningeal Niche Remodeling through TrkB-Mediated Signaling. Int J Mol Sci 2021; 22:ijms221910657. [PMID: 34638999 PMCID: PMC8508649 DOI: 10.3390/ijms221910657] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2021] [Revised: 09/22/2021] [Accepted: 09/26/2021] [Indexed: 11/16/2022] Open
Abstract
Neural precursors (NPs) present in the hippocampus can be modulated by several neurogenic stimuli, including environmental enrichment (EE) acting through BDNF-TrkB signaling. We have recently identified NPs in meninges; however, the meningeal niche response to pro-neurogenic stimuli has never been investigated. To this aim, we analyzed the effects of EE exposure on NP distribution in mouse brain meninges. Following neurogenic stimuli, although we did not detect modification of the meningeal cell number and proliferation, we observed an increased number of neural precursors in the meninges. A lineage tracing experiment suggested that EE-induced β3-Tubulin+ immature neuronal cells present in the meninges originated, at least in part, from GLAST+ radial glia cells. To investigate the molecular mechanism responsible for meningeal reaction to EE exposure, we studied the BDNF-TrkB interaction. Treatment with ANA-12, a TrkB non-competitive inhibitor, abolished the EE-induced meningeal niche changes. Overall, these data showed, for the first time, that EE exposure induced meningeal niche remodeling through TrkB-mediated signaling. Fluoxetine treatment further confirmed the meningeal niche response, suggesting it may also respond to other pharmacological neurogenic stimuli. A better understanding of the neurogenic stimuli modulation for meninges may be useful to improve the effectiveness of neurodegenerative and neuropsychiatric treatments.
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Affiliation(s)
- Stefania Zorzin
- Section of Pharmacology, Department of Diagnostic and Public Health, University of Verona, 37134 Verona, Italy; (S.Z.); (A.C.); (F.C.); (E.B.); (S.D.); (A.P.); (G.F.F.); (C.C.)
| | - Andrea Corsi
- Section of Pharmacology, Department of Diagnostic and Public Health, University of Verona, 37134 Verona, Italy; (S.Z.); (A.C.); (F.C.); (E.B.); (S.D.); (A.P.); (G.F.F.); (C.C.)
| | - Francesca Ciarpella
- Section of Pharmacology, Department of Diagnostic and Public Health, University of Verona, 37134 Verona, Italy; (S.Z.); (A.C.); (F.C.); (E.B.); (S.D.); (A.P.); (G.F.F.); (C.C.)
| | - Emanuela Bottani
- Section of Pharmacology, Department of Diagnostic and Public Health, University of Verona, 37134 Verona, Italy; (S.Z.); (A.C.); (F.C.); (E.B.); (S.D.); (A.P.); (G.F.F.); (C.C.)
| | - Sissi Dolci
- Section of Pharmacology, Department of Diagnostic and Public Health, University of Verona, 37134 Verona, Italy; (S.Z.); (A.C.); (F.C.); (E.B.); (S.D.); (A.P.); (G.F.F.); (C.C.)
| | - Giorgio Malpeli
- Department of Surgical Sciences, Dentistry, Gynecology and Pediatrics, University of Verona, 37134 Verona, Italy;
| | - Annachiara Pino
- Section of Pharmacology, Department of Diagnostic and Public Health, University of Verona, 37134 Verona, Italy; (S.Z.); (A.C.); (F.C.); (E.B.); (S.D.); (A.P.); (G.F.F.); (C.C.)
| | - Alessia Amenta
- Laboratory of Cell Metabolism and Regenerative Medicine, Department of Medical Biotechnology and Translational Medicine, University of Milan, 20129 Milan, Italy; (A.A.); (F.B.)
| | - Guido Franceso Fumagalli
- Section of Pharmacology, Department of Diagnostic and Public Health, University of Verona, 37134 Verona, Italy; (S.Z.); (A.C.); (F.C.); (E.B.); (S.D.); (A.P.); (G.F.F.); (C.C.)
| | - Cristiano Chiamulera
- Section of Pharmacology, Department of Diagnostic and Public Health, University of Verona, 37134 Verona, Italy; (S.Z.); (A.C.); (F.C.); (E.B.); (S.D.); (A.P.); (G.F.F.); (C.C.)
| | - Francesco Bifari
- Laboratory of Cell Metabolism and Regenerative Medicine, Department of Medical Biotechnology and Translational Medicine, University of Milan, 20129 Milan, Italy; (A.A.); (F.B.)
| | - Ilaria Decimo
- Section of Pharmacology, Department of Diagnostic and Public Health, University of Verona, 37134 Verona, Italy; (S.Z.); (A.C.); (F.C.); (E.B.); (S.D.); (A.P.); (G.F.F.); (C.C.)
- Correspondence: ; Tel.: +39-045-802-7509; Fax: +39-045-802-7452
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24
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Mourtzi T, Dimitrakopoulos D, Kakogiannis D, Salodimitris C, Botsakis K, Meri DK, Anesti M, Dimopoulou A, Charalampopoulos I, Gravanis A, Matsokis N, Angelatou F, Kazanis I. Characterization of substantia nigra neurogenesis in homeostasis and dopaminergic degeneration: beneficial effects of the microneurotrophin BNN-20. Stem Cell Res Ther 2021; 12:335. [PMID: 34112234 PMCID: PMC8193896 DOI: 10.1186/s13287-021-02398-3] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2020] [Accepted: 05/18/2021] [Indexed: 01/08/2023] Open
Abstract
Background Loss of dopaminergic neurons in the substantia nigra pars compacta (SNpc) underlines much of the pathology of Parkinson’s disease (PD), but the existence of an endogenous neurogenic system that could be targeted as a therapeutic strategy has been controversial. BNN-20 is a synthetic, BDNF-mimicking, microneurotrophin that we previously showed to exhibit a pleiotropic neuroprotective effect on the dopaminergic neurons of the SNpc in the “weaver” mouse model of PD. Here, we assessed its potential effects on neurogenesis. Methods We quantified total numbers of dopaminergic neurons in the SNpc of wild-type and “weaver” mice, with or without administration of BNN-20, and we employed BrdU labelling and intracerebroventricular injections of DiI to evaluate the existence of dopaminergic neurogenesis in the SNpc and to assess the origin of newborn dopaminergic neurons. The in vivo experiments were complemented by in vitro proliferation/differentiation assays of adult neural stem cells (NSCs) isolated from the substantia nigra and the subependymal zone (SEZ) stem cell niche to further characterize the effects of BNN-20. Results Our analysis revealed the existence of a low-rate turnover of dopaminergic neurons in the normal SNpc and showed, using three independent lines of experiments (stereologic cell counts, BrdU and DiI tracing), that the administration of BNN-20 leads to increased neurogenesis in the SNpc and to partial reversal of dopaminergic cell loss. The newly born dopaminergic neurons, that are partially originated from the SEZ, follow the typical nigral maturation pathway, expressing the transcription factor FoxA2. Importantly, the pro-cytogenic effects of BNN-20 were very strong in the SNpc, but were absent in other brain areas such as the cortex or the stem cell niche of the hippocampus. Moreover, although the in vitro assays showed that BNN-20 enhances the differentiation of NSCs towards glia and neurons, its in vivo administration stimulated only neurogenesis. Conclusions Our results demonstrate the existence of a neurogenic system in the SNpc that can be manipulated in order to regenerate the depleted dopaminergic cell population in the “weaver” PD mouse model. Microneurotrophin BNN-20 emerges as an excellent candidate for future PD cell replacement therapies, due to its area-specific, pro-neurogenic effects. Supplementary Information The online version contains supplementary material available at 10.1186/s13287-021-02398-3.
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Affiliation(s)
- Theodora Mourtzi
- Department of Physiology, Medical School, University of Patras, 26504, Patras, Greece. .,Lab of Developmental Biology, Department of Biology, University of Patras, 26500, Patras, Greece.
| | | | - Dimitrios Kakogiannis
- Lab of Developmental Biology, Department of Biology, University of Patras, 26500, Patras, Greece
| | - Charalampos Salodimitris
- Lab of Developmental Biology, Department of Biology, University of Patras, 26500, Patras, Greece
| | - Konstantinos Botsakis
- Department of Physiology, Medical School, University of Patras, 26504, Patras, Greece
| | - Danai Kassandra Meri
- Lab of Developmental Biology, Department of Biology, University of Patras, 26500, Patras, Greece
| | - Maria Anesti
- Lab of Developmental Biology, Department of Biology, University of Patras, 26500, Patras, Greece.,Lab of Human and Animal Physiology, Department of Biology, University of Patras, 26500, Patras, Greece
| | - Aggeliki Dimopoulou
- Department of Physiology, Medical School, University of Patras, 26504, Patras, Greece
| | - Ioannis Charalampopoulos
- Department of Pharmacology, Medical School, University of Crete, 71500, Heraklion, Greece.,Institute of Molecular Biology and Biotechnology, Foundation for Research and Technology-Hellas, 70013, Heraklion, Greece
| | - Achilleas Gravanis
- Department of Pharmacology, Medical School, University of Crete, 71500, Heraklion, Greece.,Institute of Molecular Biology and Biotechnology, Foundation for Research and Technology-Hellas, 70013, Heraklion, Greece
| | - Nikolaos Matsokis
- Lab of Human and Animal Physiology, Department of Biology, University of Patras, 26500, Patras, Greece
| | - Fevronia Angelatou
- Department of Physiology, Medical School, University of Patras, 26504, Patras, Greece
| | - Ilias Kazanis
- Lab of Developmental Biology, Department of Biology, University of Patras, 26500, Patras, Greece.
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25
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Flor-García M, Ávila J, Llorens-Martín M. GSK-3β S9A overexpression leads murine hippocampal neural precursors to acquire an astroglial phenotype in vivo. Dev Neurobiol 2021; 81:710-723. [PMID: 33955712 DOI: 10.1002/dneu.22823] [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: 12/01/2019] [Revised: 03/23/2021] [Accepted: 04/07/2021] [Indexed: 11/09/2022]
Abstract
The addition of new neurons to the existing hippocampal circuitry persists in the adult dentate gyrus (DG). During this process, named adult hippocampal neurogenesis (AHN), adult hippocampal progenitor cells (AHPs) give rise to newborn dentate granule cells (DGCs). The acquisition of a neuronal lineage by AHPs is tightly regulated by numerous signaling molecules and transcription factors. In this regard, glycogen synthase kinase 3β (GSK-3β) is a master regulator of the maturation of AHPs in vitro. Here we analyzed the cell-autonomous effects of overexpressing a constitutively active form of GSK-3β (GSK-3β S9A) in AHPs in vivo. To this end, we stereotaxically injected a GSK-3β S9A-encoding retrovirus (GSK-3β-V5) into the DG of young adult C57BL6/J Ola Hsd female mice and studied the cell lineage acquisition, migratory and marker expression patterns, and the morphological maturation of the infected cells over time. Strikingly, GSK-3β S9A-transduced cells expressed glial fibrillary acidic protein (GFAP) and NG2, thereby acquiring an immature astroglial phenotype, which differed markedly from the neuronal phenotype observed in cells transduced with a control retrovirus that encoded GFP. Accordingly, the morphology and migration patterns of cells transduced by the two retroviruses are remarkably divergent. These observations support the role of GSK-3β as a cornerstone that regulates the balance between new astocytes/neurons generated in the adult murine DG.
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Affiliation(s)
- Miguel Flor-García
- Department of Molecular Neuropathology, Centro de Biología Molecular "Severo Ochoa", CBMSO, CSIC-UAM, Madrid, Spain.,Department of Molecular Biology, Faculty of Sciences, Universidad Autónoma de Madrid, Madrid, Spain.,Center for Networked Biomedical Research on Neurodegenerative Diseases (CIBERNED), Madrid, Spain
| | - Jesús Ávila
- Department of Molecular Neuropathology, Centro de Biología Molecular "Severo Ochoa", CBMSO, CSIC-UAM, Madrid, Spain.,Center for Networked Biomedical Research on Neurodegenerative Diseases (CIBERNED), Madrid, Spain
| | - María Llorens-Martín
- Department of Molecular Neuropathology, Centro de Biología Molecular "Severo Ochoa", CBMSO, CSIC-UAM, Madrid, Spain.,Center for Networked Biomedical Research on Neurodegenerative Diseases (CIBERNED), Madrid, Spain
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Kostin A, Alam MA, McGinty D, Alam MN. Adult hypothalamic neurogenesis and sleep-wake dysfunction in aging. Sleep 2021; 44:5986548. [PMID: 33202015 DOI: 10.1093/sleep/zsaa173] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2020] [Revised: 07/22/2020] [Indexed: 12/21/2022] Open
Abstract
In the mammalian brain, adult neurogenesis has been extensively studied in the hippocampal sub-granular zone and the sub-ventricular zone of the anterolateral ventricles. However, growing evidence suggests that new cells are not only "born" constitutively in the adult hypothalamus, but many of these cells also differentiate into neurons and glia and serve specific functions. The preoptic-hypothalamic area plays a central role in the regulation of many critical functions, including sleep-wakefulness and circadian rhythms. While a role for adult hippocampal neurogenesis in regulating hippocampus-dependent functions, including cognition, has been extensively studied, adult hypothalamic neurogenic process and its contributions to various hypothalamic functions, including sleep-wake regulation are just beginning to unravel. This review is aimed at providing the current understanding of the hypothalamic adult neurogenic processes and the extent to which it affects hypothalamic functions, including sleep-wake regulation. We propose that hypothalamic neurogenic processes are vital for maintaining the proper functioning of the hypothalamic sleep-wake and circadian systems in the face of regulatory challenges. Sleep-wake disturbance is a frequent and challenging problem of aging and age-related neurodegenerative diseases. Aging is also associated with a decline in the neurogenic process. We discuss a hypothesis that a decrease in the hypothalamic neurogenic process underlies the aging of its sleep-wake and circadian systems and associated sleep-wake disturbance. We further discuss whether neuro-regenerative approaches, including pharmacological and non-pharmacological stimulation of endogenous neural stem and progenitor cells in hypothalamic neurogenic niches, can be used for mitigating sleep-wake and other hypothalamic dysfunctions in aging.
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Affiliation(s)
- Andrey Kostin
- Research Service (151A3), Veterans Affairs Greater Los Angeles Healthcare System, Sepulveda, CA
| | - Md Aftab Alam
- Research Service (151A3), Veterans Affairs Greater Los Angeles Healthcare System, Sepulveda, CA.,Department of Psychiatry, University of California, Los Angeles, CA
| | - Dennis McGinty
- Research Service (151A3), Veterans Affairs Greater Los Angeles Healthcare System, Sepulveda, CA.,Department of Psychology, University of California, Los Angeles, CA
| | - Md Noor Alam
- Research Service (151A3), Veterans Affairs Greater Los Angeles Healthcare System, Sepulveda, CA.,Department of Medicine, David Geffen School of Medicine, University of California, Los Angeles, CA
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Serra-Almeida C, Saraiva C, Esteves M, Ferreira R, Santos T, Cristóvão AC, Bernardino L. C-Terminal Binding Proteins Promote Neurogenesis and Oligodendrogenesis in the Subventricular Zone. Front Cell Dev Biol 2021; 8:584220. [PMID: 33490060 PMCID: PMC7815648 DOI: 10.3389/fcell.2020.584220] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2020] [Accepted: 12/08/2020] [Indexed: 11/22/2022] Open
Abstract
C-terminal binding proteins (CtBPs) are transcriptional modulators that can regulate gene expression through the recruitment of a corepressor complex composed of chromatin-modifying enzymes and transcriptional factors. In the brain, CtBPs have been described as regulators of cell proliferation, differentiation, and survival. Nevertheless, the role of CtBPs on postnatal neural stem cells (NSCs) fate is not known yet. Herein, we evaluate the expression and functions of CtBPs in postnatal NSCs from the subventricular zone (SVZ). We found that CtBPs were expressed in immature/progenitor cells, neurons and glial cells in the SVZ niche. Using the CtBPs modulator 4-methylthio 2-oxobutyric acid (MTOB), our results showed that 1 mM of MTOB induced cell death, while 5, 25, and 50 μM increased the number of proliferating neuroblasts, mature neurons, and oligodendrocytes. Interestingly, it also increased the dendritic complexity of immature neurons. Altogether, our results highlight CtBPs putative application for brain regenerative applications.
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Affiliation(s)
- Catarina Serra-Almeida
- Faculty of Health Sciences, Health Sciences Research Centre (CICS-UBI), University of Beira Interior, Covilhã, Portugal
| | - Cláudia Saraiva
- Faculty of Health Sciences, Health Sciences Research Centre (CICS-UBI), University of Beira Interior, Covilhã, Portugal
| | - Marta Esteves
- Faculty of Health Sciences, Health Sciences Research Centre (CICS-UBI), University of Beira Interior, Covilhã, Portugal
| | - Raquel Ferreira
- Faculty of Health Sciences, Health Sciences Research Centre (CICS-UBI), University of Beira Interior, Covilhã, Portugal
| | - Tiago Santos
- Faculty of Health Sciences, Health Sciences Research Centre (CICS-UBI), University of Beira Interior, Covilhã, Portugal
| | - Ana Clara Cristóvão
- Faculty of Health Sciences, Health Sciences Research Centre (CICS-UBI), University of Beira Interior, Covilhã, Portugal.,NeuroSoV, UBImedical, University of Beira Interior, Covilhã, Portugal
| | - Liliana Bernardino
- Faculty of Health Sciences, Health Sciences Research Centre (CICS-UBI), University of Beira Interior, Covilhã, Portugal
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S Narasimhan KK, Devarajan A, Karan G, Sundaram S, Wang Q, van Groen T, Monte FD, Rajasekaran NS. Reductive stress promotes protein aggregation and impairs neurogenesis. Redox Biol 2020; 37:101739. [PMID: 33242767 PMCID: PMC7695986 DOI: 10.1016/j.redox.2020.101739] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2020] [Accepted: 09/23/2020] [Indexed: 12/20/2022] Open
Abstract
Redox homeostasis regulates key cellular signaling in both physiology and pathology. While perturbations result in shifting the redox homeostasis towards oxidative stress are well documented, the influence of reductive stress (RS) in neurodegenerative diseases and its mechanisms are unknown. Here, we postulate that a redox shift towards the reductive arm (through the activation of Nrf2 signaling) will damage neurons and impair neurogenesis. In proliferating and differentiating neuroblastoma (Neuro 2a/N2a) cells, sulforaphane-mediated Nrf2 activation resulted in increased transcription/translation of antioxidants and glutathione (GSH) production along with significantly declined ROS in a dose-dependent manner leading to a reductive-redox state (i.e. RS). Interestingly, this resulted in endoplasmic reticulum (ER) stress leading to subsequent protein aggregation/proteotoxicity in neuroblastoma cells. Under RS, we also observed elevated Tau/α-synuclein and their co-localization with other protein aggregates in these cells. Surprisingly, we noticed that acute RS impaired neurogenesis as evidenced from reduced neurite outgrowth/length. Furthermore, maintaining the cells in a sustained RS condition (for five consecutive generations) dramatically reduced their differentiation and prevented the formation of axons (p < 0.05). This impairment in RS mediated neurogenesis occurs through the alteration of Tau dynamics i.e. RS activates the pathogenic GSK3β/Tau cascade thereby promoting the phosphorylation of Tau leading to proteotoxicity. Of note, intermittent withdrawal of sulforaphane from these cells suppressed the proteotoxic insult and re-activated the differentiation process. Overall, this results suggest that either acute or chronic RS could hamper neurogenesis through GSK3β/TAU signaling and proteotoxicity. Therefore, investigations identifying novel redox mechanisms impacting proteostasis are crucial to preserve neuronal health.
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Affiliation(s)
- Kishore Kumar S Narasimhan
- Cardiac Aging & Redox Signaling Laboratory, Molecular and Cellular Pathology, Department of Pathology, Birmingham, AL, USA
| | - Asokan Devarajan
- Department of Medicine, Division of Cardiology, Cardiac Arrhythmia Center and Neurocardiology Research Center of Excellence, University of California, Los Angeles, CA, United States
| | - Goutam Karan
- Department of Human Genetics, University of Utah, Salt Lake City, UT, USA
| | - Sandhya Sundaram
- Department of Pathology, Sri Ramachandra Medical University & Research Institute, Chennai, India
| | - Qin Wang
- Department of Cell, Developmental, and Integrative Biology, University of Alabama at Birmingham, Birmingham, AL, USA
| | - Thomas van Groen
- Department of Cell, Developmental, and Integrative Biology, University of Alabama at Birmingham, Birmingham, AL, USA
| | - Federica Del Monte
- Gazes Cardiac Research Institute, Division of Cardiology, Department of Medicine, Medical University of South Carolina, Charleston, SC, USA
| | - Namakkal S Rajasekaran
- Cardiac Aging & Redox Signaling Laboratory, Molecular and Cellular Pathology, Department of Pathology, Birmingham, AL, USA; Division of Cardiovascular Medicine, Department of Medicine, University of Utah School of Medicine, Salt Lake City, UT, USA; Center for Free Radical Biology, University of Alabama at Birmingham, Birmingham, AL, USA.
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Decimo I, Dolci S, Panuccio G, Riva M, Fumagalli G, Bifari F. Meninges: A Widespread Niche of Neural Progenitors for the Brain. Neuroscientist 2020; 27:506-528. [PMID: 32935634 PMCID: PMC8442137 DOI: 10.1177/1073858420954826] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Emerging evidence highlights the several roles that meninges play in
relevant brain functions as they are a protective membrane for the
brain, produce and release several trophic factors important for
neural cell migration and survival, control cerebrospinal fluid
dynamics, and embrace numerous immune interactions affecting neural
parenchymal functions. Furthermore, different groups have identified
subsets of neural progenitors residing in the meninges during
development and in the adulthood in different mammalian species,
including humans. Interestingly, these immature neural cells are able
to migrate from the meninges to the neural parenchyma and
differentiate into functional cortical neurons or oligodendrocytes.
Immature neural cells residing in the meninges promptly react to brain
disease. Injury-induced expansion and migration of meningeal neural
progenitors have been observed following experimental demyelination,
traumatic spinal cord and brain injury, amygdala lesion, stroke, and
progressive ataxia. In this review, we summarize data on the function
of meninges as stem cell niche and on the presence of immature neural
cells in the meninges, and discuss their roles in brain health and
disease. Furthermore, we consider the potential exploitation of
meningeal neural progenitors for the regenerative medicine to treat
neurological disorders.
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Affiliation(s)
- Ilaria Decimo
- Laboratory of Pharmacology, Department of Diagnostics and Public Health, University of Verona, Verona, Italy
| | - Sissi Dolci
- Laboratory of Pharmacology, Department of Diagnostics and Public Health, University of Verona, Verona, Italy
| | - Gabriella Panuccio
- Enhanced Regenerative Medicine, Istituto Italiano di Tecnologia, Genova, Italy
| | - Marco Riva
- Unit of Neurosurgery, Fondazione IRCCS Ca'Granda Ospedale Maggiore Policlinico, Department of Medical Biotechnology and Translational Medicine, University of Milan, Milan, Italy
| | - Guido Fumagalli
- Laboratory of Pharmacology, Department of Diagnostics and Public Health, University of Verona, Verona, Italy
| | - Francesco Bifari
- Laboratory of Cell Metabolism and Regenerative Medicine, Department of Medical Biotechnology and Translational Medicine, University of Milan, Milan, Italy
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Adult and endemic neurogenesis in the vestibular nuclei after unilateral vestibular neurectomy. Prog Neurobiol 2020; 196:101899. [PMID: 32858093 DOI: 10.1016/j.pneurobio.2020.101899] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2020] [Revised: 07/23/2020] [Accepted: 08/17/2020] [Indexed: 11/23/2022]
Abstract
We previously revealed adult reactive neurogenesis in deafferented vestibular nuclei following unilateral vestibular neurectomy (UVN) in the feline model. We recently replicated the same surgery in a rodent model and aimed to elucidate the origin and fate of newly generated cells following UVN. We used specific markers of cell proliferation, glial reaction, and cell differentiation in the medial vestibular nucleus (MVN) of adult rats. UVN induced an intense cell proliferation and glial reaction with an increase of GFAP-Immunoreactive (Ir), IBA1-Ir and Olig2-Ir cells 3 days after the lesion in the deafferented MVN. Most of the newly generated cells survived after UVN and differentiated into oligodendrocytes, astrocytes, microglial cells and GABAergic neurons. Interestingly, UVN induced a significant increase in a population of cells colocalizing SOX2 and GFAP 3 days after lesion in the deafferented MVN indicating the probable presence of multipotent cells in the vestibular nuclei. The concomitant increase in BrdU- and SOX2-Ir cells with the presence of SOX2 and GFAP colocalization 3 days after UVN in the deafferented MVN may support local mitotic activity of endemic quiescent neural stem cells in the parenchyma of vestibular nuclei.
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Molbay M, Özaydın-Goksu E, Kipmen-Korgun D, Unal A, Ozekinci M, Cebeci E, Maltepe E, Korgun ET. Human placental trophoblast progenitor cells (hTPCs) promote angiogenesis and neurogenesis after focal cerebral ischemia in rats. Int J Neurosci 2020; 132:258-268. [PMID: 32772609 DOI: 10.1080/00207454.2020.1807978] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
INTRODUCTION Reduction of blood flow below a threshold value in brain regions locally or globally is called cerebral ischemia and proper treatment requires either the restoration of normal blood flow and/or the administration of neuroprotective therapies. Human trophoblast progenitor cells (hTPCs) give rise to the placenta and are responsible for the invasion and vascular remodeling of the maternal vessels within the uterus. Here, we tested whether hTPCs promoted to differentiate along neural lineages may exhibit therapeutic properties in the setting of cerebral ischemia in vivo. MATERIALS AND METHODS Cerebral ischemia was generated in rats via middle cerebral artery occlusion and, after 24 h, hTPCs were injected systemically via tail vein. Animals were sacrified at Day 3 or 11. RESULTS TTC staining indicated that infarct volumes were smaller in hTPC treated animals. Visible myelin recovery was observed in the hTPC injected group with Luxol Fast Blue staining. On Day 11 after hTPC transplantation, DLX5 and VEGF expression, as well as 2 and 10 d after hTPC transplantation, NKX2.2 were significantly increased; while LHX6, Olig1, PDGFRα, VEGFR1 and VEGFR2 showed trends toward improved expression in brain tissue via immunoblot analysis. Neuron-like differentiated cells were positive for both NeuN and Cresyl Violet staining. CONCLUSION Here, we demonstrate for the first time that hTPCs enhance the expression of angiogenic and neurogenic factors in rat brain after stroke. Transplantation of hTPCs could form the basis of novel therapeutic approaches for the treatment of stroke in the clinical setting.
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Affiliation(s)
- Muge Molbay
- Department of Histology and Embryology, Akdeniz University School of Medicine, Antalya, Turkey
| | | | - Dijle Kipmen-Korgun
- Department of Biochemistry, Akdeniz University School of Medicine, Antalya, Turkey
| | - Ali Unal
- Department of Neurology, Akdeniz University School of Medicine, Antalya, Turkey
| | - Murat Ozekinci
- Department of Obstetrics and Gynecology, Akdeniz University School of Medicine, Antalya, Turkey
| | - Erhan Cebeci
- Department of Histology and Embryology, Akdeniz University School of Medicine, Antalya, Turkey
| | - Emin Maltepe
- Department of Pediatrics, University of California, San Francisco, CA, USA
| | - Emin Turkay Korgun
- Department of Histology and Embryology, Akdeniz University School of Medicine, Antalya, Turkey
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Complete neural stem cell (NSC) neuronal differentiation requires a branched chain amino acids-induced persistent metabolic shift towards energy metabolism. Pharmacol Res 2020; 158:104863. [PMID: 32407957 DOI: 10.1016/j.phrs.2020.104863] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/28/2020] [Revised: 04/08/2020] [Accepted: 04/24/2020] [Indexed: 02/08/2023]
Abstract
Neural stem cell (NSC) neuronal differentiation requires a metabolic shift towards oxidative phosphorylation. We now show that a branched-chain amino acids-driven, persistent metabolic shift toward energy metabolism is required for full neuronal maturation. We increased energy metabolism of differentiating neurons derived both from murine NSCs and human induced pluripotent stem cells (iPSCs) by supplementing the cell culture medium with a mixture composed of branched-chain amino acids, essential amino acids, TCA cycle precursors and co-factors. We found that treated differentiating neuronal cells with enhanced energy metabolism increased: i) total dendritic length; ii) the mean number of branches and iii) the number and maturation of the dendritic spines. Furthermore, neuronal spines in treated neurons appeared more stable with stubby and mushroom phenotype and with increased expression of molecules involved in synapse formation. Treated neurons modified their mitochondrial dynamics increasing the mitochondrial fusion and, consistently with the increase of cellular ATP content, they activated cellular mTORC1 dependent p70S6 K1 anabolism. Global transcriptomic analysis further revealed that treated neurons induce Nrf2 mediated gene expression. This was correlated with a functional increase in the Reactive Oxygen Species (ROS) scavenging mechanisms. In conclusion, persistent branched-chain amino acids-driven metabolic shift toward energy metabolism enhanced neuronal differentiation and antioxidant defences. These findings offer new opportunities to pharmacologically modulate NSC neuronal differentiation and to develop effective strategies for treating neurodegenerative diseases.
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Lees B, Meredith LR, Kirkland AE, Bryant BE, Squeglia LM. Effect of alcohol use on the adolescent brain and behavior. Pharmacol Biochem Behav 2020; 192:172906. [PMID: 32179028 PMCID: PMC7183385 DOI: 10.1016/j.pbb.2020.172906] [Citation(s) in RCA: 148] [Impact Index Per Article: 37.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/04/2019] [Revised: 01/31/2020] [Accepted: 03/12/2020] [Indexed: 12/18/2022]
Abstract
Adolescence is a particularly vulnerable neurodevelopmental period marked by high rates of engagement with risky alcohol use. This review summarizes the cognitive and neural consequences following alcohol use during adolescence from longitudinal design studies in humans and animals. Findings from human adolescent studies suggest that binge drinking and heavy alcohol use is associated with poorer cognitive functioning on a broad range of neuropsychological assessments, including learning, memory, visuospatial functioning, psychomotor speed, attention, executive functioning, and impulsivity. Alcohol use during adolescence is associated with accelerated decreases in gray matter and attenuated increases in white matter volume, and aberrant neural activity during executive functioning, attentional control, and reward sensitivity tasks, when compared to non-drinking adolescents. Animal studies in rodents and non-human primates have replicated human findings, and suggest cognitive and neural consequences of adolescent alcohol use may persist into adulthood. Novel rodent studies demonstrate that adolescent alcohol use may increase reward responsiveness of the dopamine system to alcohol later in life, as well as disrupt adolescent neurogenesis, potentially through neuroinflammation, with long-lasting neural and behavioral effects into adulthood. Larger longitudinal human cognitive and neuroimaging studies with more diverse samples are currently underway which will improve understanding of the impact of polysubstance use, as well as the interactive effects of substance use, physical and mental health, and demographic factors on cognition and neurodevelopment.
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Affiliation(s)
- Briana Lees
- The Matilda Centre for Research in Mental Health and Substance Use, University of Sydney, Australia.
| | - Lindsay R Meredith
- University of California, Los Angeles, Department of Psychology, United States of America
| | - Anna E Kirkland
- American University, Department of Psychology, United States of America
| | - Brittany E Bryant
- Medical University of South Carolina, Department of Psychiatry and Behavioral Sciences, United States of America
| | - Lindsay M Squeglia
- Medical University of South Carolina, Department of Psychiatry and Behavioral Sciences, United States of America
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Purvis EM, O'Donnell JC, Chen HI, Cullen DK. Tissue Engineering and Biomaterial Strategies to Elicit Endogenous Neuronal Replacement in the Brain. Front Neurol 2020; 11:344. [PMID: 32411087 PMCID: PMC7199479 DOI: 10.3389/fneur.2020.00344] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2019] [Accepted: 04/07/2020] [Indexed: 12/19/2022] Open
Abstract
Neurogenesis in the postnatal mammalian brain is known to occur in the dentate gyrus of the hippocampus and the subventricular zone. These neurogenic niches serve as endogenous sources of neural precursor cells that could potentially replace neurons that have been lost or damaged throughout the brain. As an example, manipulation of the subventricular zone to augment neurogenesis has become a popular strategy for attempting to replace neurons that have been lost due to acute brain injury or neurodegenerative disease. In this review article, we describe current experimental strategies to enhance the regenerative potential of endogenous neural precursor cell sources by enhancing cell proliferation in neurogenic regions and/or redirecting migration, including pharmacological, biomaterial, and tissue engineering strategies. In particular, we discuss a novel replacement strategy based on exogenously biofabricated "living scaffolds" that could enhance and redirect endogenous neuroblast migration from the subventricular zone to specified regions throughout the brain. This approach utilizes the first implantable, biomimetic tissue-engineered rostral migratory stream, thereby leveraging the brain's natural mechanism for sustained neuronal replacement by replicating the structure and function of the native rostral migratory stream. Across all these strategies, we discuss several challenges that need to be overcome to successfully harness endogenous neural precursor cells to promote nervous system repair and functional restoration. With further development, the diverse and innovative tissue engineering and biomaterial strategies explored in this review have the potential to facilitate functional neuronal replacement to mitigate neurological and psychiatric symptoms caused by injury, developmental disorders, or neurodegenerative disease.
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Affiliation(s)
- Erin M. Purvis
- Center for Brain Injury & Repair, Department of Neurosurgery, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, United States
- Center for Neurotrauma, Neurodegeneration & Restoration, Corporal Michael J. Crescenz Veterans Affairs Medical Center, Philadelphia, PA, United States
| | - John C. O'Donnell
- Center for Brain Injury & Repair, Department of Neurosurgery, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, United States
- Center for Neurotrauma, Neurodegeneration & Restoration, Corporal Michael J. Crescenz Veterans Affairs Medical Center, Philadelphia, PA, United States
| | - H. Isaac Chen
- Center for Brain Injury & Repair, Department of Neurosurgery, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, United States
- Center for Neurotrauma, Neurodegeneration & Restoration, Corporal Michael J. Crescenz Veterans Affairs Medical Center, Philadelphia, PA, United States
| | - D. Kacy Cullen
- Center for Brain Injury & Repair, Department of Neurosurgery, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, United States
- Center for Neurotrauma, Neurodegeneration & Restoration, Corporal Michael J. Crescenz Veterans Affairs Medical Center, Philadelphia, PA, United States
- Department of Bioengineering, School of Engineering and Applied Science, University of Pennsylvania, Philadelphia, PA, United States
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Fu DL, Li JH, Shi YH, Zhang XL, Lin Y, Zheng GQ. Sanhua Decoction, a Classic Herbal Prescription, Exerts Neuroprotection Through Regulating Phosphorylated Tau Level and Promoting Adult Endogenous Neurogenesis After Cerebral Ischemia/Reperfusion Injury. Front Physiol 2020; 11:57. [PMID: 32116767 PMCID: PMC7026024 DOI: 10.3389/fphys.2020.00057] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2019] [Accepted: 01/21/2020] [Indexed: 01/01/2023] Open
Abstract
Background: Ischemia stroke is the leading cause of death and long-term disability. Sanhua Decoction (SHD), a classic Chinese herbal prescription, has been used for ischemic stroke for about thousands of years. Here, we aim to investigate the neuroprotective effects of SHD on cerebral ischemia/reperfusion (CIR) injury rat models. Methods: The male Sprague-Dawley rats (body weight, 250–280 g; age, 7–8 weeks) were randomly divided into sham group, CIR group, and SHD group and were further divided into subgroups according to different time points at 6 h, 1, 3, 7, 14, 21, and 28 d, respectively. The SHD group received intragastric administration of SHD at 10 g kg−1 d−1. The focal CIR models were induced by middle cerebral artery occlusion according to Longa’s method, while sham group had the same operation without suture insertion. Neurological deficit score (NDS) was evaluated using the Longa’s scale. BrdU, doublecortin (DCX), and glial fibrillary acidic protein (GFAP) were used to label proliferation, migration, and differentiation of nerve cells before being observed by immunofluorescence. The expression of reelin, total tau (t-tau), and phosphorylated tau (p-tau) were evaluated by western blot and RT-qPCR. Results: SHD can significantly improve NDS at 1, 3, 7, and 14 d (p < 0.05), increase the number of BrdU positive and BrdU/DCX positive cells in subventricular zone at 3, 7, and 14 d (p < 0.05), upregulate BrdU/GFAP positive cells in the ischemic penumbra at 28 d after CIR (p < 0.05), and reduce p-tau level at 1, 3, 7, and 14 d (p < 0.05). There was no significant difference on reelin and t-tau level between three groups at each time points after CIR. Conclusions: SHD exerts neuroprotection probably by regulating p-tau level and promoting the proliferation, migration, and differentiation of endogenous neural stem cells, accompanying with neurobehavioral recovery.
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Affiliation(s)
- Deng-Lei Fu
- Department of Neurology, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, China
| | - Ji-Huang Li
- Department of Neurology, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, China
| | - Yi-Hua Shi
- Department of Neurology, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, China
| | - Xi-Le Zhang
- Department of Neurology, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, China
| | - Yan Lin
- Department of Neurology, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, China
| | - Guo-Qing Zheng
- Department of Neurology, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, China
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36
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New insights into the regulatory roles of microRNAs in adult neurogenesis. Curr Opin Pharmacol 2020; 50:38-45. [DOI: 10.1016/j.coph.2019.11.003] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2019] [Revised: 10/31/2019] [Accepted: 11/06/2019] [Indexed: 12/22/2022]
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Gato A, Alonso MI, Lamus F, Miyan J. Neurogenesis: A process ontogenically linked to brain cavities and their content, CSF. Semin Cell Dev Biol 2019; 102:21-27. [PMID: 31786097 DOI: 10.1016/j.semcdb.2019.11.008] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2019] [Revised: 11/14/2019] [Accepted: 11/14/2019] [Indexed: 01/02/2023]
Abstract
Neurogenesis is the process underlying the development of the highly evolved central nervous system (CNS) in vertebrates. Neurogenesis takes place by differentiation of specific Neural Precursor Cells in the neurogenic niche. The main objective of this review is to highlight the specific relationship between the brain cavities, and neurogenesis from neural precursors. Brain cavities and their content, Cerebrospinal Fluid (CSF), establish a key relation with the neurogenic "niche" because of the presence in this fluid of neurogenic signals able to control neural precursor cell behaviour, inducing precursor proliferation and neuronal differentiation. This influence seems to be ontogenically preserved, despite the temporal and spatial variations that occur throughout life. In order to better understand this concept, we consider three main life periods in the CSF-Neurogenesis interaction: The "Embryonic" period, which take place at the Neural Tube stage and extends from the isolation of the neural tube at the end of "neurulation" to the beginning of Choroid Plexus activity; the "Fetal" period, which includes the remaining developmental and the early postnatal stages; and the "Adult" period, which continues for the rest of adult life. Each period has specific characteristics in respect of CSF synthesis and composition, and the location, extension and neurogenic activity of the neurogenic niche. However, CSF interaction with the neurogenic niche is a common factor, which should be taken into account to better understand the ontogeny of neuron formation and replacement, as well as its potential role in the success or failure of therapies for the ageing, injured or diseased brain.
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Affiliation(s)
- A Gato
- Departamento De Anatomía Y Radiología, Facultad De Medicina, Universidad De Valladolid, C/ Ramón Y Cajal 7, 47005, Valladolid, Spain; Laboratorio de Desarrollo y Teratología del Sistema Nervioso. Instituto de Neurociencias de Castilla y León (INCYL). Universidad de Valladolid. Valladolid, Spain.
| | - M I Alonso
- Departamento De Anatomía Y Radiología, Facultad De Medicina, Universidad De Valladolid, C/ Ramón Y Cajal 7, 47005, Valladolid, Spain; Laboratorio de Desarrollo y Teratología del Sistema Nervioso. Instituto de Neurociencias de Castilla y León (INCYL). Universidad de Valladolid. Valladolid, Spain
| | - F Lamus
- Departamento De Anatomía Y Radiología, Facultad De Medicina, Universidad De Valladolid, C/ Ramón Y Cajal 7, 47005, Valladolid, Spain; Laboratorio de Desarrollo y Teratología del Sistema Nervioso. Instituto de Neurociencias de Castilla y León (INCYL). Universidad de Valladolid. Valladolid, Spain
| | - J Miyan
- Division of Neuroscience & Experimental Psychology, Faculty of Biology, Medicine & Health, the University of Manchester, Oxford Road, Manchester, M13 9PT, UK
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Omega-3 Docosahexaenoic Acid Is a Mediator of Fate-Decision of Adult Neural Stem Cells. Int J Mol Sci 2019; 20:ijms20174240. [PMID: 31480215 PMCID: PMC6747551 DOI: 10.3390/ijms20174240] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2019] [Revised: 08/26/2019] [Accepted: 08/27/2019] [Indexed: 12/11/2022] Open
Abstract
The mammalian brain is enriched with lipids that serve as energy catalyzers or secondary messengers of essential signaling pathways. Docosahexaenoic acid (DHA) is an omega-3 fatty acid synthesized de novo at low levels in humans, an endogenous supply from its precursors, and is mainly incorporated from nutrition, an exogeneous supply. Decreased levels of DHA have been reported in the brains of patients with neurodegenerative diseases. Preventing this decrease or supplementing the brain with DHA has been considered as a therapy for the DHA brain deficiency that could be linked with neuronal death or neurodegeneration. The mammalian brain has, however, a mechanism of compensation for loss of neurons in the brain: neurogenesis, the birth of neurons from neural stem cells. In adulthood, neurogenesis is still present, although at a slower rate and with low efficiency, where most of the newly born neurons die. Neural stem/progenitor cells (NSPCs) have been shown to require lipids for proper metabolism for proliferation maintenance and neurogenesis induction. Recent studies have focused on the effects of these essential lipids on the neurobiology of NSPCs. This review aimed to introduce the possible use of DHA to impact NSPC fate-decision as a therapy for neurodegenerative diseases.
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Rüber T, Schlaug G. Repair after brainstem ischemia involves neurogenesis and the rubrospinal system. Ann Neurol 2019; 83:1069-1071. [PMID: 29908075 DOI: 10.1002/ana.25265] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2018] [Revised: 05/19/2018] [Accepted: 05/21/2018] [Indexed: 12/19/2022]
Affiliation(s)
- Theodor Rüber
- Department of Epileptology, University of Bonn Medical Center, Bonn, Germany
| | - Gottfried Schlaug
- Department of Neurology Division of Stroke Recovery and Neurorestoration and Division of Cerebrovascular Diseases, Beth Israel Deaconess Medical Center and Harvard Medical School, Boston, MA
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40
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Olfactory neuroepithelium alterations and cognitive correlates in schizophrenia. Eur Psychiatry 2019; 61:23-32. [PMID: 31260908 DOI: 10.1016/j.eurpsy.2019.06.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/13/2019] [Revised: 05/21/2019] [Accepted: 06/11/2019] [Indexed: 11/22/2022] Open
Abstract
BACKGROUND Few studies have investigated alterations of olfactory neuroepithelium (ONE) as a biomarker of schizophrenia, and none its association with cognitive functioning. METHOD Fresh ONE cells from twelve patients with schizophrenia and thirteen healthy controls were collected by nasal brushing, cultured in proper media and passed twelve times. Markers of cell proliferation (BrdU incorporation, Cyclin-D1 and p21 protein level) were quantified.Cognitive function was measured using Brief Neuropsychological Examination-2. PRIMARY OUTCOME proliferation of ONE cells from schizophrenic patients at passage 3. Secondary outcome: association between alteration of cell proliferation and cognitive function. RESULTS Fresh ONE cells from patients showed a faster cell proliferation than those from healthy controls at passage 3. An opposite trend was observed at passage 9, ONE cells of patients with schizophrenia showing slower cell proliferation as compared to healthy controls. In schizophrenia, overall cognitive function (Spearman's rho -0.657, p < 0.01), verbal memory - immediate recall, with interference at 10 s and 30 s (Spearman's rho from -0.676 to 0.697, all p < 0.01) were inversely associated with cell proliferation at passage 3. CONCLUSION Fresh ONE cells collected by nasal brushing might eventually represent a tool for diagnosing schizophrenia based upon markers of cell proliferation, which can be easily implemented as single-layer culture. Cell proliferation at passage 3 can be regarded as a promising proxy of cognitive functioning in schizophrenia. Future studies should replicate these findings, and may assess whether ONE alterations are there before onset of psychosis, serving as an early sign in patients with at risk mental state.
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Martano G, Borroni EM, Lopci E, Cattaneo MG, Mattioli M, Bachi A, Decimo I, Bifari F. Metabolism of Stem and Progenitor Cells: Proper Methods to Answer Specific Questions. Front Mol Neurosci 2019; 12:151. [PMID: 31249511 PMCID: PMC6584756 DOI: 10.3389/fnmol.2019.00151] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2019] [Accepted: 05/28/2019] [Indexed: 01/01/2023] Open
Abstract
Stem cells can stay quiescent for a long period of time or proliferate and differentiate into multiple lineages. The activity of stage-specific metabolic programs allows stem cells to best adapt their functions in different microenvironments. Specific cellular phenotypes can be, therefore, defined by precise metabolic signatures. Notably, not only cellular metabolism describes a defined cellular phenotype, but experimental evidence now clearly indicate that also rewiring cells towards a particular cellular metabolism can drive their cellular phenotype and function accordingly. Cellular metabolism can be studied by both targeted and untargeted approaches. Targeted analyses focus on a subset of identified metabolites and on their metabolic fluxes. In addition, the overall assessment of the oxygen consumption rate (OCR) gives a measure of the overall cellular oxidative metabolism and mitochondrial function. Untargeted approach provides a large-scale identification and quantification of the whole metabolome with the aim to describe a metabolic fingerprinting. In this review article, we overview the methodologies currently available for the study of invitro stem cell metabolism, including metabolic fluxes, fingerprint analyses, and single-cell metabolomics. Moreover, we summarize available approaches for the study of in vivo stem cell metabolism. For all of the described methods, we highlight their specificities and limitations. In addition, we discuss practical concerns about the most threatening steps, including metabolic quenching, sample preparation and extraction. A better knowledge of the precise metabolic signature defining specific cell population is instrumental to the design of novel therapeutic strategies able to drive undifferentiated stem cells towards a selective and valuable cellular phenotype.
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Affiliation(s)
| | - Elena Monica Borroni
- Humanitas Clinical and Research Center, Rozzano, Italy.,Department of Medical Biotechnology and Translational Medicine, University of Milan, Milan, Italy
| | - Egesta Lopci
- Nuclear Medicine Unit, Humanitas Clinical and Research Hospital-IRCCS, Rozzano, Italy
| | - Maria Grazia Cattaneo
- Department of Medical Biotechnology and Translational Medicine, University of Milan, Milan, Italy
| | - Milena Mattioli
- Laboratory of Cell Metabolism and Regenerative Medicine, Department of Medical Biotechnology and Translational Medicine, University of Milan, Milan, Italy
| | - Angela Bachi
- IFOM-FIRC Institute of Molecular Oncology, Milan, Italy
| | - Ilaria Decimo
- Laboratory of Pharmacology, Department of Diagnostics and Public Health, University of Verona, Verona, Italy
| | - Francesco Bifari
- Laboratory of Cell Metabolism and Regenerative Medicine, Department of Medical Biotechnology and Translational Medicine, University of Milan, Milan, Italy
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Teleanu RI, Gherasim O, Gherasim TG, Grumezescu V, Grumezescu AM, Teleanu DM. Nanomaterial-Based Approaches for Neural Regeneration. Pharmaceutics 2019; 11:E266. [PMID: 31181719 PMCID: PMC6630326 DOI: 10.3390/pharmaceutics11060266] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2019] [Revised: 06/03/2019] [Accepted: 06/04/2019] [Indexed: 12/13/2022] Open
Abstract
Mechanical, thermal, chemical, or ischemic injury of the central or peripheral nervous system results in neuron loss, neurite damage, and/or neuronal dysfunction, almost always accompanied by sensorimotor impairment which alters the patient's life quality. The regenerative strategies for the injured nervous system are currently limited and mainly allow partial functional recovery, so it is necessary to develop new and effective approaches for nervous tissue regenerative therapy. Nanomaterials based on inorganic or organic and composite or hybrid compounds with tunable physicochemical properties and functionality proved beneficial for the transport and delivery/release of various neuroregenerative-relevant biomolecules or cells. Within the following paragraphs, we will emphasize that nanomaterial-based strategies (including nanosized and nanostructured biomaterials) represent a promising alternative towards repairing and regenerating the injured nervous system.
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Affiliation(s)
- Raluca Ioana Teleanu
- "Victor Gomoiu" Clinical Children's Hospital, "Carol Davila" University of Medicine and Pharmacy, 050474 Bucharest, Romania.
| | - Oana Gherasim
- Department of Science and Engineering of Oxide Materials and Nanomaterials, Faculty of Applied Chemistry and Materials Science, Politehnica University of Bucharest, 011061 Bucharest, Romania.
- Lasers Department, National Institute for Lasers, Plasma and Radiation Physics, 077125 Magurele, Romania.
| | - Tudor George Gherasim
- National Institute of Neurology and Neurovascular Diseases, 077160 Bucharest, Romania.
| | - Valentina Grumezescu
- Lasers Department, National Institute for Lasers, Plasma and Radiation Physics, 077125 Magurele, Romania.
| | - Alexandru Mihai Grumezescu
- Department of Science and Engineering of Oxide Materials and Nanomaterials, Faculty of Applied Chemistry and Materials Science, Politehnica University of Bucharest, 011061 Bucharest, Romania.
| | - Daniel Mihai Teleanu
- Emergency University Hospital, "Carol Davila" University of Medicine and Pharmacy, 050474 Bucharest, Romania.
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Kwakowsky A, Calvo-Flores Guzmán B, Pandya M, Turner C, Waldvogel HJ, Faull RL. GABA A receptor subunit expression changes in the human Alzheimer's disease hippocampus, subiculum, entorhinal cortex and superior temporal gyrus. J Neurochem 2019; 145:374-392. [PMID: 29485232 DOI: 10.1111/jnc.14325] [Citation(s) in RCA: 69] [Impact Index Per Article: 13.8] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2017] [Revised: 01/17/2018] [Accepted: 02/12/2018] [Indexed: 12/14/2022]
Abstract
Gamma-aminobutyric acid (GABA) is the primary inhibitory neurotransmitter in the central nervous system. GABA type A receptors (GABAA Rs) are severely affected in Alzheimer's disease (AD). However, the distribution and subunit composition of GABAA Rs in the AD brain are not well understood. This is the first comprehensive study to show brain region- and cell layer-specific alterations in the expression of the GABAA R subunits α1-3, α5, β1-3 and γ2 in the human AD hippocampus, entorhinal cortex and superior temporal gyrus. In late-stage AD tissue samples using immunohistochemistry we found significant alteration of all investigated GABAA Rs subunits except for α3 and β1 that were well preserved. The most prominent changes include an increase in GABAA R α1 expression associated with AD in all layers of the CA3 region, in the stratum (str.) granulare and hilus of the dentate gyrus. We found a significant increase in GABAA R α2 expression in the str. oriens of the CA1-3, str. radiatum of the CA2,3 and decrease in the str. pyramidale of the CA1 region in AD cases. In AD there was a significant increase in GABAA R α5 subunit expression in str. pyramidale, str. oriens of the CA1 region and decrease in the superior temporal gyrus. We also found a significant decrease in the GABAA R β3 subunit immunoreactivity in the str. oriens of the CA2, str. granulare and str. moleculare of the dentate gyrus. In conclusion, these findings indicate that the expression of the GABAA R subunits shows brain region- and layer-specific alterations in AD, and these changes could significantly influence and alter GABAA R function in the disease. Cover Image for this issue: doi: 10.1111/jnc.14179.
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Affiliation(s)
- Andrea Kwakowsky
- Centre for Brain Research, Department of Anatomy and Medical Imaging, Faculty of Medical and Health Sciences, University of Auckland, Auckland, New Zealand
| | - Beatriz Calvo-Flores Guzmán
- Centre for Brain Research, Department of Anatomy and Medical Imaging, Faculty of Medical and Health Sciences, University of Auckland, Auckland, New Zealand
| | - Madhavi Pandya
- Centre for Brain Research, Department of Anatomy and Medical Imaging, Faculty of Medical and Health Sciences, University of Auckland, Auckland, New Zealand
| | - Clinton Turner
- Centre for Brain Research, Department of Anatomy and Medical Imaging, Faculty of Medical and Health Sciences, University of Auckland, Auckland, New Zealand.,Department of Anatomical Pathology, LabPlus, Auckland City Hospital, Auckland, New Zealand
| | - Henry J Waldvogel
- Centre for Brain Research, Department of Anatomy and Medical Imaging, Faculty of Medical and Health Sciences, University of Auckland, Auckland, New Zealand
| | - Richard L Faull
- Centre for Brain Research, Department of Anatomy and Medical Imaging, Faculty of Medical and Health Sciences, University of Auckland, Auckland, New Zealand
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44
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Brain Functional Reserve in the Context of Neuroplasticity after Stroke. Neural Plast 2019; 2019:9708905. [PMID: 30936915 PMCID: PMC6415310 DOI: 10.1155/2019/9708905] [Citation(s) in RCA: 44] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2018] [Accepted: 01/03/2019] [Indexed: 12/18/2022] Open
Abstract
Stroke is the second cause of death and more importantly first cause of disability in people over 40 years of age. Current therapeutic management of ischemic stroke does not provide fully satisfactory outcomes. Stroke management has significantly changed since the time when there were opened modern stroke units with early motor and speech rehabilitation in hospitals. In recent decades, researchers searched for biomarkers of ischemic stroke and neuroplasticity in order to determine effective diagnostics, prognostic assessment, and therapy. Complex background of events following ischemic episode hinders successful design of effective therapeutic strategies. So far, studies have proven that regeneration after stroke and recovery of lost functions may be assigned to neuronal plasticity understood as ability of brain to reorganize and rebuild as an effect of changed environmental conditions. As many neuronal processes influencing neuroplasticity depend on expression of particular genes and genetic diversity possibly influencing its effectiveness, knowledge on their mechanisms is necessary to understand this process. Epigenetic mechanisms occurring after stroke was briefly discussed in this paper including several mechanisms such as synaptic plasticity; neuro-, glio-, and angiogenesis processes; and growth of axon.
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45
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Castro-Torres RD, Landa J, Rabaza M, Busquets O, Olloquequi J, Ettcheto M, Beas-Zarate C, Folch J, Camins A, Auladell C, Verdaguer E. JNK Isoforms Are Involved in the Control of Adult Hippocampal Neurogenesis in Mice, Both in Physiological Conditions and in an Experimental Model of Temporal Lobe Epilepsy. Mol Neurobiol 2019; 56:5856-5865. [PMID: 30685843 DOI: 10.1007/s12035-019-1476-7] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2018] [Accepted: 01/10/2019] [Indexed: 12/25/2022]
Abstract
Neurogenesis in the adult dentate gyrus (DG) of the hippocampus allows the continuous generation of new neurons. This cellular process can be disturbed under specific environmental conditions, such as epileptic seizures; however, the underlying mechanisms responsible for their control remain largely unknown. Although different studies have linked the JNK (c-Jun-N-terminal-kinase) activity with the regulation of cell proliferation and differentiation, the specific function of JNK in controlling adult hippocampal neurogenesis is not well known. The purpose of this study was to analyze the role of JNK isoforms (JNK1/JNK2/JNK3) in adult-hippocampal neurogenesis. To achieve this goal, we used JNK-knockout mice (Jnk1-/-, Jnk2-/-, and Jnk3-/-), untreated and treated with intraperitoneal injections of kainic acid (KA), as an experimental model of epilepsy. In each condition, we identified cell subpopulations at different stages of neuronal maturation by immunohistochemical specific markers. In physiological conditions, we evidenced that JNK1 and JNK3 control the levels of one subtype of early progenitor cells (GFAP+/Sox2+) but not the GFAP+/Nestin+ cell subtype. Moreover, the absence of JNK1 induces an increase of immature neurons (Doublecortin+; PSA-NCAM+ cells) compared with wild-type (WT). On the other hand, Jnk1-/- and Jnk3-/- mice showed an increased capacity to maintain hippocampal homeostasis, since calbindin immunoreactivity is higher than in WT. An important fact is that, after KA injection, Jnk1-/- and Jnk3-/- mice show no increase in the different neurogenic cell subpopulation analyzed, in contrast to what occurs in WT and Jnk2-/- mice. All these data support that JNK isoforms are involved in the adult neurogenesis control.
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Affiliation(s)
- Rubén D Castro-Torres
- Departament de Biologia Cellular, Fisiologia i Immunologia, Facultat de Biologia, Universitat de Barcelona, Barcelona, Spain.,Departament de Farmacologia, Toxicologia i Química Terapèutica, Facultat de Farmàcia i Ciències de l'Alimentació, Universitat de Barcelona, Barcelona, Spain.,Departamento de Biología Celular y Molecular, Laboratorio de Regeneración Neural, C.U.C.B.A, Universidad de Guadalajara, 44340, Jalisco, Mexico
| | - Jon Landa
- Departament de Biologia Cellular, Fisiologia i Immunologia, Facultat de Biologia, Universitat de Barcelona, Barcelona, Spain
| | - Marina Rabaza
- Departament de Biologia Cellular, Fisiologia i Immunologia, Facultat de Biologia, Universitat de Barcelona, Barcelona, Spain
| | - Oriol Busquets
- Departament de Farmacologia, Toxicologia i Química Terapèutica, Facultat de Farmàcia i Ciències de l'Alimentació, Universitat de Barcelona, Barcelona, Spain.,Departament de Bioquímica i Biotecnologia, Facultat de Medicina i Ciències de la Salut, Universitat Rovira i Virgili, Reus, Tarragona, Spain.,Networking Research Center on Neurodegenerative Diseases (CIBERNED), Instituto de Salud Carlos III, Madrid, Spain.,Institut de Neurociències, Universitat de Barcelona, Barcelona, Spain
| | - Jordi Olloquequi
- Facultad de Ciencias de la Salud, Universidad Autónoma de Chile, 5 Poniente No. 1670, 3460000, Talca, Chile
| | - Miren Ettcheto
- Departament de Farmacologia, Toxicologia i Química Terapèutica, Facultat de Farmàcia i Ciències de l'Alimentació, Universitat de Barcelona, Barcelona, Spain.,Departament de Bioquímica i Biotecnologia, Facultat de Medicina i Ciències de la Salut, Universitat Rovira i Virgili, Reus, Tarragona, Spain.,Networking Research Center on Neurodegenerative Diseases (CIBERNED), Instituto de Salud Carlos III, Madrid, Spain.,Institut de Neurociències, Universitat de Barcelona, Barcelona, Spain
| | - Carlos Beas-Zarate
- Departamento de Biología Celular y Molecular, Laboratorio de Regeneración Neural, C.U.C.B.A, Universidad de Guadalajara, 44340, Jalisco, Mexico
| | - Jaume Folch
- Departament de Bioquímica i Biotecnologia, Facultat de Medicina i Ciències de la Salut, Universitat Rovira i Virgili, Reus, Tarragona, Spain.,Networking Research Center on Neurodegenerative Diseases (CIBERNED), Instituto de Salud Carlos III, Madrid, Spain
| | - Antoni Camins
- Departament de Farmacologia, Toxicologia i Química Terapèutica, Facultat de Farmàcia i Ciències de l'Alimentació, Universitat de Barcelona, Barcelona, Spain.,Networking Research Center on Neurodegenerative Diseases (CIBERNED), Instituto de Salud Carlos III, Madrid, Spain.,Institut de Neurociències, Universitat de Barcelona, Barcelona, Spain
| | - Carme Auladell
- Departament de Biologia Cellular, Fisiologia i Immunologia, Facultat de Biologia, Universitat de Barcelona, Barcelona, Spain. .,Networking Research Center on Neurodegenerative Diseases (CIBERNED), Instituto de Salud Carlos III, Madrid, Spain. .,Institut de Neurociències, Universitat de Barcelona, Barcelona, Spain.
| | - Ester Verdaguer
- Departament de Biologia Cellular, Fisiologia i Immunologia, Facultat de Biologia, Universitat de Barcelona, Barcelona, Spain.,Networking Research Center on Neurodegenerative Diseases (CIBERNED), Instituto de Salud Carlos III, Madrid, Spain.,Institut de Neurociències, Universitat de Barcelona, Barcelona, Spain
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Mashanov V, Zueva O. Radial Glia in Echinoderms. Dev Neurobiol 2018; 79:396-405. [PMID: 30548565 DOI: 10.1002/dneu.22659] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2018] [Revised: 11/13/2018] [Accepted: 11/28/2018] [Indexed: 12/12/2022]
Abstract
Radial glial cells are crucial in vertebrate neural development and regeneration. It has been recently proposed that this neurogenic cell type might be older than the chordate lineage itself and might have been present in the last common deuterostome ancestor. Here, we summarize the results of recent studies on radial glia in echinoderms, a highly regenerative phylum of marine invertebrates with shared ancestry to chordates. We discuss the involvement of these cells in both homeostatic neurogenesis and post-traumatic neural regeneration, compare the features of radial glia in echinoderms and chordates to each other, and review the molecular mechanisms that control differentiation and plasticity of the echinoderm radial glia. Overall, studies on echinoderm radial glia provide a unique opportunity to understand the fundamental biology of this cell type from evolutionary and comparative perspectives.
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Affiliation(s)
- Vladimir Mashanov
- Department of Biology, University of North Florida, Jacksonville, Florida
| | - Olga Zueva
- Department of Biology, University of North Florida, Jacksonville, Florida.,Department of Biological Sciences, Carnegie Mellon University, Pittsburgh, Pennsylvania
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47
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Stappert L, Klaus F, Brüstle O. MicroRNAs Engage in Complex Circuits Regulating Adult Neurogenesis. Front Neurosci 2018; 12:707. [PMID: 30455620 PMCID: PMC6230569 DOI: 10.3389/fnins.2018.00707] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2018] [Accepted: 09/18/2018] [Indexed: 12/27/2022] Open
Abstract
The finding that the adult mammalian brain is still capable of producing neurons has ignited a new field of research aiming to identify the molecular mechanisms regulating adult neurogenesis. An improved understanding of these mechanisms could lead to the development of novel approaches to delay cognitive decline and facilitate neuroregeneration in the adult human brain. Accumulating evidence suggest microRNAs (miRNAs), which represent a class of post-transcriptional gene expression regulators, as crucial part of the gene regulatory networks governing adult neurogenesis. This review attempts to illustrate how miRNAs modulate key processes in the adult neurogenic niche by interacting with each other and with transcriptional regulators. We discuss the function of miRNAs in adult neurogenesis following the life-journey of an adult-born neuron from the adult neural stem cell (NSCs) compartment to its final target site. We first survey how miRNAs control the initial step of adult neurogenesis, that is the transition of quiescent to activated proliferative adult NSCs, and then go on to discuss the role of miRNAs to regulate neuronal differentiation, survival, and functional integration of the newborn neurons. In this context, we highlight miRNAs that converge on functionally related targets or act within cross talking gene regulatory networks. The cooperative manner of miRNA action and the broad target repertoire of each individual miRNA could make the miRNA system a promising tool to gain control on adult NSCs in the context of therapeutic approaches.
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Affiliation(s)
- Laura Stappert
- Institute of Reconstructive Neurobiology, Life & Brain Center, University of Bonn Medical Center, Bonn, Germany
| | - Frederike Klaus
- Institute of Reconstructive Neurobiology, Life & Brain Center, University of Bonn Medical Center, Bonn, Germany
| | - Oliver Brüstle
- Institute of Reconstructive Neurobiology, Life & Brain Center, University of Bonn Medical Center, Bonn, Germany
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Barreau K, Montero-Menei C, Eyer J. The neurofilament derived-peptide NFL-TBS.40-63 enters in-vitro in human neural stem cells and increases their differentiation. PLoS One 2018; 13:e0201578. [PMID: 30092042 PMCID: PMC6084907 DOI: 10.1371/journal.pone.0201578] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2017] [Accepted: 07/18/2018] [Indexed: 12/13/2022] Open
Abstract
Regenerative medicine is a promising approach to treat neurodegenerative diseases by replacing degenerating cells like neurons or oligodendrocytes. Targeting human neural stem cells directly in the brain is a big challenge in such a strategy. The neurofilament derived NFL-TBS.40-63 peptide has recently been introduced as a novel tool to target neural stem cells. Previous studies showed that this peptide can be internalized by rat neural stem cells in vitro and in vivo, which coincided with lower proliferation and self-renewal capacity and increase of differentiation. In this study, we analyzed the uptake and potential effects of the NFL-TBS.40-63 peptide on human neural stem cells isolated from human fetuses. We showed that the peptide inhibits proliferation and the ability to produce neurospheres in vitro, which is consistent with an increase in cell adhesion and differentiation. These results confirm that the peptide could be a promising molecule to target and manipulate human neural stem cells and thus could serve as a strategic tool for regenerative medicine.
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Affiliation(s)
- Kristell Barreau
- Laboratoire Micro et Nanomédecines Translationnelles, Inserm 1066, CNRS 6021, Institut de Recherche en Ingénierie de la Santé, Bâtiment IBS Institut de Biologie de la Santé, Université Angers, Centre Hospitalier Universitaire, Angers, France
| | - Claudia Montero-Menei
- Centre de Recherche en Cancérologie et Immunologie, INSERM, Université de Nantes, Université Angers, Angers, France
| | - Joël Eyer
- Laboratoire Micro et Nanomédecines Translationnelles, Inserm 1066, CNRS 6021, Institut de Recherche en Ingénierie de la Santé, Bâtiment IBS Institut de Biologie de la Santé, Université Angers, Centre Hospitalier Universitaire, Angers, France
- * E-mail:
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Baptista P, Andrade JP. Adult Hippocampal Neurogenesis: Regulation and Possible Functional and Clinical Correlates. Front Neuroanat 2018; 12:44. [PMID: 29922131 PMCID: PMC5996050 DOI: 10.3389/fnana.2018.00044] [Citation(s) in RCA: 95] [Impact Index Per Article: 15.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2018] [Accepted: 05/11/2018] [Indexed: 01/19/2023] Open
Abstract
The formation of new neurons in the adult central nervous system (CNS) has been recognized as one of the major findings in neuroanatomical research. The hippocampal formation (HF), one of the main targets of these investigations, holds a neurogenic niche widely recognized among several mammalian species and whose existence in the human brain has sparked controversy and extensive debate. Many cellular features from this region emphasize that hippocampal neurogenesis suffers changes with normal aging and, among regulatory factors, physical exercise and chronic stress provoke opposite effects on cell proliferation, maturation and survival. Considering the numerous functions attributable to the HF, increasing or decreasing the integration of new neurons in the delicate neuronal network might be significant for modulation of cognition and emotion. The role that immature and mature adult-born neurons play in this circuitry is still mostly unknown but it could prove fundamental to understand hippocampal-dependent cognitive processes, the pathophysiology of depression, and the therapeutic effects of antidepressant medication in modulating behavior and mental health.
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Affiliation(s)
- Pedro Baptista
- Unit of Anatomy, Department of Biomedicine, Faculty of Medicine of University of Porto, Porto, Portugal
| | - José P Andrade
- Unit of Anatomy, Department of Biomedicine, Faculty of Medicine of University of Porto, Porto, Portugal.,Center of Health Technology and Services Research (CINTESIS), Faculty of Medicine of University of Porto, Porto, Portugal
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Spear LP. Effects of adolescent alcohol consumption on the brain and behaviour. Nat Rev Neurosci 2018; 19:197-214. [PMID: 29467469 DOI: 10.1038/nrn.2018.10] [Citation(s) in RCA: 286] [Impact Index Per Article: 47.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Per occasion, alcohol consumption is higher in adolescents than in adults in both humans and laboratory animals, with changes in the adolescent brain probably contributing to this elevated drinking. This Review examines the contributors to and consequences of the use of alcohol in adolescents. Human adolescents with a history of alcohol use differ neurally and cognitively from other adolescents; some of these differences predate the commencement of alcohol consumption and serve as potential risk factors for later alcohol use, whereas others emerge from its use. The consequences of alcohol use in human adolescents include alterations in attention, verbal learning, visuospatial processing and memory, along with altered development of grey and white matter volumes and disrupted white matter integrity. The functional consequences of adolescent alcohol use emerging from studies of rodent models of adolescence include decreased cognitive flexibility, behavioural inefficiencies and elevations in anxiety, disinhibition, impulsivity and risk-taking. Rodent studies have also showed that adolescent alcohol use can impair neurogenesis, induce neuroinflammation and epigenetic alterations, and lead to the persistence of adolescent-like neurobehavioural phenotypes into adulthood. Although only a limited number of studies have examined comparable measures in humans and laboratory animals, the available data provide evidence for notable across-species similarities in the neural consequences of adolescent alcohol exposure, providing support for further translational efforts in this context.
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Affiliation(s)
- Linda P Spear
- Developmental Exposure Alcohol Research Center (DEARC) and Behavioural Neuroscience Program, Department of Psychology, Binghamton University, Binghamton, NY, USA
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