1
|
Sadanandan J, Sathyanesan M, Newton SS. Regulation of trophic factors in the choroid plexus of aged mice. RESEARCH SQUARE 2024:rs.3.rs-4123786. [PMID: 38562722 PMCID: PMC10984084 DOI: 10.21203/rs.3.rs-4123786/v1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/04/2024]
Abstract
Background The choroid plexus (CP) is an understudied tissue in the central nervous system (CNS), primarily implicated in cerebrospinal fluid (CSF) production. Additionally, CP produces numerous neurotrophic factors (NTF), which circulate to different regions of the brain. Regulation of NTF in the CP during natural aging has yet to be discovered. Here, we investigated the age and gender-specific transcription of NTFs along with the changes in the tight junctional proteins (TJPs) and water channel protein Aquaporin (AQP1). Methods We used male and female mice for our study. We analyzed neurotrophic factor gene expression patterns using quantitative and digital droplet PCR at three different time points: mature adult, middle-aged, and aged. Additionally, we used immunohistochemical analysis (IHC) to evaluate in vivo protein expression. We further investigated the cellular phenotype of these NTFS, TJP and water channel proteins in the mouse CP by co-labeling them with the classical vascular marker, Isolectin B4, and epithelial cell marker, plectin. Results Aging significantly altered the NTF's gene expression in the CP Brain-derived neurotrophic factor (BDNF), Midkine, VGF, Insulin-like growth factor (IGF1), IGF2, klotho, Erythropoietin, and its receptor were reduced in the aged CP of males and females. Vascular endothelial growth factor (VEGF) transcription was gender-specific; in males, gene expression is unchanged in the aged CP while females showed an age-dependent reduction. Age-dependent changes in VEGF localization were evident, from vasculature to epithelial cells. IGF2 and klotho localized in the basolateral membrane of the CP and showed an age-dependent reduction in epithelial cells. Water channel protein AQP1 localized in the tip of epithelial cells and showed an age-related reduction in mRNA and protein levels. TJP's JAM, CLAUDIN1, CLAUDIN2, and CLAUDIN5 were reduced in aged mice. Conclusions Our study highlights transcriptional level changes in the CP during aging. The age-related transcriptional changes exhibit similarities as well as gene-specific differences in the CP of males and females. Altered transcription of the water channel protein AQP1 and TJPs could be involved in reduced CSF production during aging. Importantly, reduction in the neurotrophic factors and longevity factor Klotho can play a role in regulating brain aging.
Collapse
|
2
|
Arcos J, Grunenwald F, Sepulveda D, Jerez C, Urbina V, Huerta T, Troncoso-Escudero P, Tirado D, Perez A, Diaz-Espinoza R, Nova E, Kubitscheck U, Rodriguez-Gatica JE, Hetz C, Toledo J, Ahumada P, Rojas-Rivera D, Martín-Montañez E, Garcia-Fernandez M, Vidal RL. IGF2 prevents dopaminergic neuronal loss and decreases intracellular alpha-synuclein accumulation in Parkinson's disease models. Cell Death Discov 2023; 9:438. [PMID: 38042807 PMCID: PMC10693583 DOI: 10.1038/s41420-023-01734-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2023] [Revised: 11/05/2023] [Accepted: 11/21/2023] [Indexed: 12/04/2023] Open
Abstract
Parkinson's disease (PD) is the second most common late-onset neurodegenerative disease and the predominant cause of movement problems. PD is characterized by motor control impairment by extensive loss of dopaminergic neurons in the substantia nigra pars compacta (SNpc). This selective dopaminergic neuronal loss is in part triggered by intracellular protein inclusions called Lewy bodies, which are composed mainly of misfolded alpha-synuclein (α-syn) protein. We previously reported insulin-like growth factor 2 (IGF2) as a key protein downregulated in PD patients. Here we demonstrated that IGF2 treatment or IGF2 overexpression reduced the α-syn aggregates and their toxicity by IGF2 receptor (IGF2R) activation in cellular PD models. Also, we observed IGF2 and its interaction with IGF2R enhance the α-syn secretion. To determine the possible IGF2 neuroprotective effect in vivo we used a gene therapy approach in an idiopathic PD model based on α-syn preformed fibrils intracerebral injection. IGF2 gene therapy revealed a significantly preventing of motor impairment in idiopathic PD model. Moreover, IGF2 expression prevents dopaminergic neuronal loss in the SN together with a decrease in α-syn accumulation (phospho-α-syn levels) in the striatum and SN brain region. Furthermore, the IGF2 neuroprotective effect was associated with the prevention of synaptic spines loss in dopaminergic neurons in vivo. The possible mechanism of IGF2 in cell survival effect could be associated with the decrease of the intracellular accumulation of α-syn and the improvement of dopaminergic synaptic function. Our results identify to IGF2 as a relevant factor for the prevention of α-syn toxicity in both in vitro and preclinical PD models.
Collapse
Affiliation(s)
- Javiera Arcos
- Center for Integrative Biology, Universidad Mayor, Santiago, Chile
- Biomedical Neuroscience Institute, University of Chile, Santiago, Chile
- Center for Geroscience, Brain Health and Metabolism, Santiago, Chile
| | - Felipe Grunenwald
- Center for Integrative Biology, Universidad Mayor, Santiago, Chile
- Biomedical Neuroscience Institute, University of Chile, Santiago, Chile
- Center for Geroscience, Brain Health and Metabolism, Santiago, Chile
| | - Denisse Sepulveda
- Center for Integrative Biology, Universidad Mayor, Santiago, Chile
- Biomedical Neuroscience Institute, University of Chile, Santiago, Chile
- Center for Geroscience, Brain Health and Metabolism, Santiago, Chile
| | - Carolina Jerez
- Center for Integrative Biology, Universidad Mayor, Santiago, Chile
- Biomedical Neuroscience Institute, University of Chile, Santiago, Chile
- Center for Geroscience, Brain Health and Metabolism, Santiago, Chile
| | - Valentina Urbina
- Center for Integrative Biology, Universidad Mayor, Santiago, Chile
- Biomedical Neuroscience Institute, University of Chile, Santiago, Chile
- Center for Geroscience, Brain Health and Metabolism, Santiago, Chile
| | - Tomas Huerta
- Center for Integrative Biology, Universidad Mayor, Santiago, Chile
- Biomedical Neuroscience Institute, University of Chile, Santiago, Chile
- Center for Geroscience, Brain Health and Metabolism, Santiago, Chile
| | - Paulina Troncoso-Escudero
- Center for Integrative Biology, Universidad Mayor, Santiago, Chile
- Biomedical Neuroscience Institute, University of Chile, Santiago, Chile
- Center for Geroscience, Brain Health and Metabolism, Santiago, Chile
- Molecular Diagnostic and Biomarkers Laboratory, Department of Pathology, Faculty of Medicine Clínica Alemana, Universidad del Desarrollo, Santiago, Chile
| | - Daniel Tirado
- Center for Integrative Biology, Universidad Mayor, Santiago, Chile
- Biomedical Neuroscience Institute, University of Chile, Santiago, Chile
- Center for Geroscience, Brain Health and Metabolism, Santiago, Chile
- Escuela de Tecnología Médica, Universidad Mayor, Santiago, Chile
| | - Angela Perez
- Center for Integrative Biology, Universidad Mayor, Santiago, Chile
- Biomedical Neuroscience Institute, University of Chile, Santiago, Chile
- Center for Geroscience, Brain Health and Metabolism, Santiago, Chile
- Escuela de Tecnología Médica, Universidad Mayor, Santiago, Chile
| | - Rodrigo Diaz-Espinoza
- Departamento de Biología, Facultad de Química y Biología, Universidad de Santiago de Chile, Santiago, Chile
| | - Esteban Nova
- Departamento de Química, Facultad de Ciencias Naturales, Matemáticas y Medio Ambiente, Universidad Tecnológica Metropolitana, Santiago, Chile
| | - Ulrich Kubitscheck
- Clausius Institute of Physical and Theoretical Chemistry, University of Bonn, Bonn, Germany
| | | | - Claudio Hetz
- Biomedical Neuroscience Institute, University of Chile, Santiago, Chile
- Center for Geroscience, Brain Health and Metabolism, Santiago, Chile
| | - Jorge Toledo
- Biomedical Neuroscience Institute, University of Chile, Santiago, Chile
| | - Pablo Ahumada
- Center for Integrative Biology, Universidad Mayor, Santiago, Chile
| | - Diego Rojas-Rivera
- Escuela de Tecnología Médica, Universidad Mayor, Santiago, Chile
- Escuela de Biotecnología, Universidad Mayor, Santiago, Chile
- Center for Biomedicine, Universidad Mayor, Santiago, Chile
| | - Elisa Martín-Montañez
- Department of Pharmacology, Faculty of Medicine, Biomedical Research Institute of Malaga, University of Malaga, Malaga, Spain
| | - María Garcia-Fernandez
- Department of Human Physiology, Faculty of Medicine, Biomedical Research Institute of Malaga, University of Malaga, Malaga, Spain
| | - René L Vidal
- Center for Integrative Biology, Universidad Mayor, Santiago, Chile.
- Biomedical Neuroscience Institute, University of Chile, Santiago, Chile.
- Center for Geroscience, Brain Health and Metabolism, Santiago, Chile.
- Escuela de Tecnología Médica, Universidad Mayor, Santiago, Chile.
- Escuela de Biotecnología, Universidad Mayor, Santiago, Chile.
| |
Collapse
|
3
|
Thapa R, Afzal O, Gupta G, Bhat AA, Almalki WH, Alzarea SI, Kazmi I, Altamimi ASA, Subramaniyan V, Thangavelu L, Singh SK, Dua K. Unveiling the connection: Long-chain non-coding RNAs and critical signaling pathways in breast cancer. Pathol Res Pract 2023; 249:154736. [PMID: 37579591 DOI: 10.1016/j.prp.2023.154736] [Citation(s) in RCA: 44] [Impact Index Per Article: 44.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/02/2023] [Revised: 08/01/2023] [Accepted: 08/02/2023] [Indexed: 08/16/2023]
Abstract
Breast cancer is a complex and diverse condition that disrupts multiple signaling pathways essential for cell proliferation, survival, and differentiation. Recently, the significant involvement of long-chain non-coding RNAs (lncRNAs) in controlling key signaling pathways associated with breast cancer development has been discovered. This review aims to explore the interaction between lncRNAs and various pathways, including the AKT/PI3K/mTOR, Wnt/β-catenin, Notch, DNA damage response, TGF-β, Hedgehog, and NF-κB signaling pathways, to gain a comprehensive understanding of their roles in breast cancer. The AKT/PI3K/mTOR pathway regulates cell growth, survival, and metabolic function. Recent data suggests that specific lncRNAs can influence the functioning of this pathway, acting as either oncogenes or tumor suppressors. Dysregulation of this pathway is commonly observed in breast cancer cases. Moreover, breast cancer development has been associated with other pathways such as Wnt/β-catenin, Notch, TGF-β, Hedgehog, and NF-κB. Emerging studies have identified lncRNAs that modulate breast cancer's growth, progression, and metastasis by interacting with these pathways. To advance the development of innovative diagnostic tools and targeted treatment options, it is crucial to comprehend the intricate relationship between lncRNAs and vital signaling pathways in breast cancer. By fully harnessing the therapeutic potential of lncRNAs, there is a possibility of developing more effective and personalized therapy choices for breast cancer patients. Further investigation is necessary to comprehensively understand the role of lncRNAs within breast cancer signaling pathways and fully exploit their therapeutic potential.
Collapse
Affiliation(s)
- Riya Thapa
- School of Pharmacy, Suresh Gyan Vihar University, Jagatpura, Mahal Road, Jaipur, India
| | - Obaid Afzal
- Department of Pharmaceutical Chemistry, College of Pharmacy, Prince Sattam Bin Abdulaziz University, Al Kharj 11942, Saudi Arabia
| | - Gaurav Gupta
- School of Pharmacy, Suresh Gyan Vihar University, Jagatpura, Mahal Road, Jaipur, India; Uttaranchal Institute of Pharmaceutical Sciences, Uttaranchal University, Dehradun, India; School of Pharmacy, Graphic Era Hill University, Dehradun 248007, India
| | - Asif Ahmad Bhat
- School of Pharmacy, Suresh Gyan Vihar University, Jagatpura, Mahal Road, Jaipur, India
| | - Waleed Hassan Almalki
- Department of Pharmacology, College of Pharmacy, Umm Al-Qura University, Makkah, Saudi Arabia
| | - Sami I Alzarea
- Department of Pharmacology, College of Pharmacy, Jouf University, Sakaka, Al-Jouf, Saudi Arabia
| | - Imran Kazmi
- Department of Biochemistry, Faculty of Science, King Abdulaziz University, Jeddah, Saudi Arabia
| | | | - Vetriselvan Subramaniyan
- Department of Pharmacology, Jeffrey Cheah School of Medicine and Health Sciences, MONASH University, Malaysia
| | - Lakshmi Thangavelu
- Center for Global Health Research , Saveetha Medical College , Saveetha Institute of Medical and Technical Sciences, Saveetha University, India.
| | - Sachin Kumar Singh
- School of Pharmaceutical Sciences, Lovely Professional University, Phagwara 144411, India; Faculty of Health, Australian Research Centre in Complementary and Integrative Medicine, University of Technology, Sydney, Ultimo-NSW 2007, Australia
| | - Kamal Dua
- Faculty of Health, Australian Research Centre in Complementary and Integrative Medicine, University of Technology, Sydney, Ultimo-NSW 2007, Australia; Discipline of Pharmacy, Graduate School of Health, University of Technology, Sydney, Ultimo-NSW 2007, Australia
| |
Collapse
|
4
|
Sharma DR, Cheng B, Jaiswal MK, Zhang X, Kumar A, Parikh N, Singh D, Sheth H, Varghese M, Dobrenis K, Zhang X, Hof PR, Stanton PK, Ballabh P. Elevated insulin growth factor-1 in dentate gyrus induces cognitive deficits in pre-term newborns. Cereb Cortex 2023; 33:6449-6464. [PMID: 36646459 PMCID: PMC10183730 DOI: 10.1093/cercor/bhac516] [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: 08/23/2022] [Revised: 12/07/2022] [Accepted: 12/08/2022] [Indexed: 01/18/2023] Open
Abstract
Prematurely born infants are deprived of maternal hormones and cared for in the stressful environment of Neonatal Intensive Care Units (NICUs). They suffer from long-lasting deficits in learning and memory. Here, we show that prematurity and associated neonatal stress disrupt dentate gyrus (DG) development and induce long-term cognitive deficits and that these effects are mediated by insulin growth factor-1 (IGF1). Nonmaternal care of premature rabbits increased the number of granule cells and interneurons and reduced neurogenesis, suggesting accelerated premature maturation of DG. However, the density of glutamatergic synapses, mature dendritic spines, and synaptic transmission were reduced in preterm kits compared with full-term controls, indicating that premature synaptic maturation was abnormal. These findings were consistent with cognitive deficits observed in premature rabbits and appeared to be driven by transcriptomic changes in the granule cells. Preterm kits displayed reduced weight, elevated serum cortisol and growth hormone, and higher IGF1 expression in the liver and DG relative to full-term controls. Importantly, blocking IGF-1 receptor in premature kits restored cognitive deficits, increased the density of glutamatergic puncta, and rescued NR2B and PSD95 levels in the DG. Hence, IGF1 inhibition alleviates prematurity-induced cognitive dysfunction and synaptic changes in the DG through modulation of NR2B and PSD95. The study identifies a novel strategy to potentially rescue DG maldevelopment and cognitive dysfunction in premature infants under stress in NICUs.
Collapse
Affiliation(s)
- Deep R Sharma
- Department of Pediatrics, Albert Einstein College of Medicine, Bronx, NY 10461, USA
- Dominick P. Purpura Department of Neuroscience, Albert Einstein College of Medicine, Bronx, NY 10461, USA
| | - Bokun Cheng
- Department of Pediatrics, Albert Einstein College of Medicine, Bronx, NY 10461, USA
- Dominick P. Purpura Department of Neuroscience, Albert Einstein College of Medicine, Bronx, NY 10461, USA
| | - Manoj Kumar Jaiswal
- Nash Family Department of Neuroscience and Friedman Brain Institute, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA
| | - Xusheng Zhang
- Computational Genomics Core, Albert Einstein College of Medicine, Bronx, NY 10461, USA
| | - Ajeet Kumar
- Department of Pediatrics, Albert Einstein College of Medicine, Bronx, NY 10461, USA
| | - Nirzar Parikh
- Department of Pediatrics, Albert Einstein College of Medicine, Bronx, NY 10461, USA
| | - Divya Singh
- Department of Pediatrics, Albert Einstein College of Medicine, Bronx, NY 10461, USA
| | - Hardik Sheth
- Department of Pediatrics, Albert Einstein College of Medicine, Bronx, NY 10461, USA
| | - Merina Varghese
- Nash Family Department of Neuroscience and Friedman Brain Institute, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA
| | - Kostantin Dobrenis
- Dominick P. Purpura Department of Neuroscience, Albert Einstein College of Medicine, Bronx, NY 10461, USA
| | - Xiaolei Zhang
- Departments of Cell Biology and Anatomy, New York Medical College, Valhalla, NY 10595, USA
| | - Patrick R Hof
- Nash Family Department of Neuroscience and Friedman Brain Institute, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA
| | - Patric K Stanton
- Departments of Cell Biology and Anatomy, New York Medical College, Valhalla, NY 10595, USA
| | - Praveen Ballabh
- Department of Pediatrics, Albert Einstein College of Medicine, Bronx, NY 10461, USA
- Dominick P. Purpura Department of Neuroscience, Albert Einstein College of Medicine, Bronx, NY 10461, USA
| |
Collapse
|
5
|
Denninger JK, Miller LN, Walters AE, Hosawi M, Sebring G, Rieskamp JD, Ding T, Rindani R, Chen KS, Senthilvelan S, Volk A, Zhao F, Askwith C, Kirby ED. Neural stem and progenitor cells support and protect adult hippocampal function via vascular endothelial growth factor secretion. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2023:2023.04.24.537801. [PMID: 37163097 PMCID: PMC10168272 DOI: 10.1101/2023.04.24.537801] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/11/2023]
Abstract
Adult neural stem and progenitor cells (NSPCs) reside in the dentate gyrus (DG) of the hippocampus throughout the lifespan of most mammalian species. In addition to generating new neurons, NSPCs may alter their niche via secretion of growth factors and cytokines. We recently showed that adult DG NSPCs secrete vascular endothelial growth factor (VEGF), which is critical for maintaining adult neurogenesis. Here, we asked whether NSPC-derived VEGF alters hippocampal function independent of adult neurogenesis. We found that loss of NSPC-derived VEGF acutely impaired hippocampal memory, caused neuronal hyperexcitability and exacerbated excitotoxic injury. We also found that NSPCs generate substantial proportions of total DG VEGF and VEGF disperses broadly throughout the DG, both of which help explain how this anatomically-restricted cell population could modulate function broadly. These findings suggest that NSPCs actively support and protect DG function via secreted VEGF, thereby providing a non-neurogenic functional dimension to endogenous NSPCs.
Collapse
Affiliation(s)
| | - Lisa N. Miller
- Department of Psychology, The Ohio State University, Columbus, OH, USA
| | - Ashley E. Walters
- Department of Psychology, The Ohio State University, Columbus, OH, USA
| | - Manal Hosawi
- Department of Neurology and Neurological Sciences, Stanford University, Stanford, CA, USA
| | - Gwendolyn Sebring
- Department of Psychology, The Ohio State University, Columbus, OH, USA
| | | | - Tianli Ding
- Department of Psychology, The Ohio State University, Columbus, OH, USA
| | - Raina Rindani
- Department of Psychology, The Ohio State University, Columbus, OH, USA
- Current affiliation: UC Health, Cincinnati, OH, USA
| | - Kelly S. Chen
- Department of Neurology and Neurological Sciences, Stanford University, Stanford, CA, USA
| | | | - Abigail Volk
- Department of Psychology, The Ohio State University, Columbus, OH, USA
| | - Fangli Zhao
- Department of Neuroscience, The Ohio State University, Columbus, OH, USA
| | - Candice Askwith
- Department of Neuroscience, The Ohio State University, Columbus, OH, USA
| | - Elizabeth D. Kirby
- Department of Psychology, The Ohio State University, Columbus, OH, USA
- Chronic Brain Injury Center, The Ohio State University, Columbus, OH, USA
| |
Collapse
|
6
|
Fitzgerald GS, Chuchta TG, McNay EC. Insulin‐like growth factor‐2 is a promising candidate for the treatment and prevention of Alzheimer's disease. CNS Neurosci Ther 2023; 29:1449-1469. [PMID: 36971212 PMCID: PMC10173726 DOI: 10.1111/cns.14160] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2022] [Revised: 02/06/2023] [Accepted: 02/22/2023] [Indexed: 03/29/2023] Open
Abstract
Alzheimer's disease (AD) is the most common form of dementia. Current AD treatments slow the rate of cognitive decline, but do not restore lost function. One reason for the low efficacy of current treatments is that they fail to target neurotrophic processes, which are thought to be essential for functional recovery. Bolstering neurotrophic processes may also be a viable strategy for preventative treatment, since structural losses are thought to underlie cognitive decline in AD. The challenge of identifying presymptomatic patients who might benefit from preventative treatment means that any such treatment must meet a high standard of safety and tolerability. The neurotrophic peptide insulin-like growth factor-2 (IGF2) is a promising candidate for both treating and preventing AD-induced cognitive decline. Brain IGF2 expression declines in AD patients. In rodent models of AD, exogenous IGF2 modulates multiple aspects of AD pathology, resulting in (1) improved cognitive function; (2) stimulation of neurogenesis and synaptogenesis; and, (3) neuroprotection against cholinergic dysfunction and beta amyloid-induced neurotoxicity. Preclinical evidence suggests that IGF2 is likely to be safe and tolerable at therapeutic doses. In the preventative treatment context, the intranasal route of administration is likely to be the preferred method for achieving the therapeutic effect without risking adverse side effects. For patients already experiencing AD dementia, routes of administration that deliver IGF2 directly access the CNS may be necessary. Finally, we discuss several strategies for improving the translational validity of animal models used to study the therapeutic potential of IGF2.
Collapse
Affiliation(s)
| | | | - E C McNay
- University at Albany, Albany, New York, USA
| |
Collapse
|
7
|
Sun D, Mei L, Xiong WC. Dorsal Dentate Gyrus, a Key Regulator for Mood and Psychiatric Disorders. Biol Psychiatry 2023:S0006-3223(23)00009-4. [PMID: 36894487 DOI: 10.1016/j.biopsych.2023.01.005] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/26/2022] [Revised: 12/06/2022] [Accepted: 01/09/2023] [Indexed: 01/18/2023]
Abstract
The dentate gyrus, a "gate" that controls the flow of information into the hippocampus, is critical for learning, memory, spatial navigation, and mood regulation. Several lines of evidence have demonstrated that deficits in dentate granule cells (DGCs) (e.g., loss of DGCs or genetic mutations in DGCs) contribute to the development of various psychiatric disorders, such as depression and anxiety disorders. Whereas ventral DGCs are believed to be critical for mood regulation, the functions of dorsal DGCs in this regard remain elusive. Here, we review the role of DGCs, in particular the dorsal DGCs, in the regulation of mood, their functional relationships with DGC development, and the contributions of dysfunctional DGCs to mental disorders.
Collapse
Affiliation(s)
- Dong Sun
- Department of Neurosciences, School of Medicine, Case Western Reserve University, Cleveland, Ohio; National Engineering Laboratory for AIDS Vaccine, School of Life Sciences, Jilin University, Changchun, Jilin, China
| | - Lin Mei
- Department of Neurosciences, School of Medicine, Case Western Reserve University, Cleveland, Ohio
| | - Wen-Cheng Xiong
- Department of Neurosciences, School of Medicine, Case Western Reserve University, Cleveland, Ohio.
| |
Collapse
|
8
|
Lozano-Ureña A, Lázaro-Carot L, Jiménez-Villalba E, Montalbán-Loro R, Mateos-White I, Duart-Abadía P, Martínez-Gurrea I, Nakayama KI, Fariñas I, Kirstein M, Gil-Sanz C, Ferrón SR. IGF2 interacts with the imprinted gene Cdkn1c to promote terminal differentiation of neural stem cells. Development 2023; 150:286545. [PMID: 36633189 PMCID: PMC9903205 DOI: 10.1242/dev.200563] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2022] [Accepted: 11/23/2022] [Indexed: 01/13/2023]
Abstract
Adult neurogenesis is supported by multipotent neural stem cells (NSCs) with unique properties and growth requirements. Adult NSCs constitute a reversibly quiescent cell population that can be activated by extracellular signals from the microenvironment in which they reside in vivo. Although genomic imprinting plays a role in adult neurogenesis through dose regulation of some relevant signals, the roles of many imprinted genes in the process remain elusive. Insulin-like growth factor 2 (IGF2) is encoded by an imprinted gene that contributes to NSC maintenance in the adult subventricular zone through a biallelic expression in only the vascular compartment. We show here that IGF2 additionally promotes terminal differentiation of NSCs into astrocytes, neurons and oligodendrocytes by inducing the expression of the maternally expressed gene cyclin-dependent kinase inhibitor 1c (Cdkn1c), encoding the cell cycle inhibitor p57. Using intraventricular infusion of recombinant IGF2 in a conditional mutant strain with Cdkn1c-deficient NSCs, we confirm that p57 partially mediates the differentiation effects of IGF2 in NSCs and that this occurs independently of its role in cell-cycle progression, balancing the relationship between astrogliogenesis, neurogenesis and oligodendrogenesis.
Collapse
Affiliation(s)
- Anna Lozano-Ureña
- Instituto de Biotecnología y Biomedicina (BIOTECMED), Universidad de Valencia, Valencia 46100, Spain,Departamento de Biología Celular, Universidad de Valencia, Valencia 46100, Spain
| | - Laura Lázaro-Carot
- Instituto de Biotecnología y Biomedicina (BIOTECMED), Universidad de Valencia, Valencia 46100, Spain,Departamento de Biología Celular, Universidad de Valencia, Valencia 46100, Spain
| | - Esteban Jiménez-Villalba
- Instituto de Biotecnología y Biomedicina (BIOTECMED), Universidad de Valencia, Valencia 46100, Spain,Departamento de Biología Celular, Universidad de Valencia, Valencia 46100, Spain
| | - Raquel Montalbán-Loro
- Instituto de Biotecnología y Biomedicina (BIOTECMED), Universidad de Valencia, Valencia 46100, Spain,Departamento de Biología Celular, Universidad de Valencia, Valencia 46100, Spain
| | - Isabel Mateos-White
- Instituto de Biotecnología y Biomedicina (BIOTECMED), Universidad de Valencia, Valencia 46100, Spain,Departamento de Biología Celular, Universidad de Valencia, Valencia 46100, Spain
| | - Pere Duart-Abadía
- Instituto de Biotecnología y Biomedicina (BIOTECMED), Universidad de Valencia, Valencia 46100, Spain,Departamento de Biología Celular, Universidad de Valencia, Valencia 46100, Spain
| | - Irene Martínez-Gurrea
- Instituto de Biotecnología y Biomedicina (BIOTECMED), Universidad de Valencia, Valencia 46100, Spain,Departamento de Biología Celular, Universidad de Valencia, Valencia 46100, Spain
| | - Keiichi I. Nakayama
- Department of Molecular and Cellular Biology, Medical Institute of Bioregulation, Kyushu University, Fukuoka 819-0395, Japan
| | - Isabel Fariñas
- Instituto de Biotecnología y Biomedicina (BIOTECMED), Universidad de Valencia, Valencia 46100, Spain,Departamento de Biología Celular, Universidad de Valencia, Valencia 46100, Spain
| | - Martina Kirstein
- Instituto de Biotecnología y Biomedicina (BIOTECMED), Universidad de Valencia, Valencia 46100, Spain,Departamento de Biología Celular, Universidad de Valencia, Valencia 46100, Spain
| | - Cristina Gil-Sanz
- Instituto de Biotecnología y Biomedicina (BIOTECMED), Universidad de Valencia, Valencia 46100, Spain,Departamento de Biología Celular, Universidad de Valencia, Valencia 46100, Spain
| | - Sacri R. Ferrón
- Instituto de Biotecnología y Biomedicina (BIOTECMED), Universidad de Valencia, Valencia 46100, Spain,Departamento de Biología Celular, Universidad de Valencia, Valencia 46100, Spain,Author for correspondence ()
| |
Collapse
|
9
|
Differential vulnerability of adult neurogenic niches to dosage of the neurodevelopmental-disorder linked gene Foxg1. Mol Psychiatry 2023; 28:497-514. [PMID: 35318461 PMCID: PMC9812795 DOI: 10.1038/s41380-022-01497-8] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/24/2020] [Revised: 02/14/2022] [Accepted: 02/22/2022] [Indexed: 01/13/2023]
Abstract
The transcription factor FOXG1 serves pleiotropic functions in brain development ranging from the regulation of precursor proliferation to the control of cortical circuit formation. Loss-of-function mutations and duplications of FOXG1 are associated with neurodevelopmental disorders in humans illustrating the importance of FOXG1 dosage for brain development. Aberrant FOXG1 dosage has been found to disrupt the balanced activity of glutamatergic and GABAergic neurons, but the underlying mechanisms are not fully understood. We report that FOXG1 is expressed in the main adult neurogenic niches in mice, i.e. the hippocampal dentate gyrus and the subependymal zone/olfactory bulb system, where neurogenesis of glutamatergic and GABAergic neurons persists into adulthood. These niches displayed differential vulnerability to increased FOXG1 dosage: high FOXG1 levels severely compromised survival and glutamatergic dentate granule neuron fate acquisition in the hippocampal neurogenic niche, but left neurogenesis of GABAergic neurons in the subependymal zone/olfactory bulb system unaffected. Comparative transcriptomic analyses revealed a significantly higher expression of the apoptosis-linked nuclear receptor Nr4a1 in FOXG1-overexpressing hippocampal neural precursors. Strikingly, pharmacological interference with NR4A1 function rescued FOXG1-dependent death of hippocampal progenitors. Our results reveal differential vulnerability of neuronal subtypes to increased FOXG1 dosage and suggest that activity of a FOXG1/NR4A1 axis contributes to such subtype-specific response.
Collapse
|
10
|
Khan MM, Parikh V. Prospects for Neurotrophic Factor-Based Early Intervention in Schizophrenia: Lessons Learned from the Effects of Antipsychotic Drugs on Cognition, Neurogenesis, and Neurotrophic Factors. CNS & NEUROLOGICAL DISORDERS DRUG TARGETS 2023; 22:289-303. [PMID: 35366786 DOI: 10.2174/1871527321666220401124151] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/28/2021] [Revised: 02/13/2022] [Accepted: 02/18/2022] [Indexed: 12/16/2022]
Abstract
Although reducing psychotic symptoms in schizophrenia has been a major focus of therapeutic interventions for decades, improving cognition is considered a better predictor of functional outcomes. However, the most commonly prescribed antipsychotic drugs (APDs) show only marginal beneficial effects on cognition in patients with schizophrenia. The neural mechanisms underlying cognitive disturbances in schizophrenia remain unknown that making drug development efforts very challenging. Since neurotrophic factors are the primary architects of neurogenesis, synaptic plasticity, learning, and memory, the findings from preclinical and clinical studies that assess changes in neurogenesis and neurotrophic factors and their relationship to cognitive performance in schizophrenia, and how these mechanisms might be impacted by APD treatment, may provide valuable clues in developing therapies to combat cognitive deficit in schizophrenia. Numerous evidence produced over the years suggests a deficit in a wide spectrum of neurotrophic factors in schizophrenia. Since schizophrenia is considered a neurodevelopmental disorder, early intervention with neurotrophic factors may be more effective in ameliorating the cognitive deficits and psychopathological symptoms associated with this pathology. In this context, results from initial clinical trials with neurotrophic factors and their future potential to improve cognition and psychosocial functioning in schizophrenia are discussed.
Collapse
Affiliation(s)
- Mohammad M Khan
- Laboratory of Translational Neurology and Molecular Psychiatry, Department of Biotechnology, Era\'s Lucknow Medical College and Hospital, and Faculty of Science, Era University, Lucknow, UP, India
| | - Vinay Parikh
- Department of Psychology and Neuroscience Program, Temple University, Philadelphia, PA, USA
| |
Collapse
|
11
|
Caron NS, Haqqani AS, Sandhu A, Aly AE, Findlay Black H, Bone JN, McBride JL, Abulrob A, Stanimirovic D, Leavitt BR, Hayden MR. Cerebrospinal fluid biomarkers for assessing Huntington disease onset and severity. Brain Commun 2022; 4:fcac309. [PMID: 36523269 PMCID: PMC9746690 DOI: 10.1093/braincomms/fcac309] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2022] [Revised: 09/02/2022] [Accepted: 11/23/2022] [Indexed: 08/27/2023] Open
Abstract
The identification of molecular biomarkers in CSF from individuals affected by Huntington disease may help improve predictions of disease onset, better define disease progression and could facilitate the evaluation of potential therapies. The primary objective of our study was to investigate novel CSF protein candidates and replicate previously reported protein biomarker changes in CSF from Huntington disease mutation carriers and healthy controls. Our secondary objective was to compare the discriminatory potential of individual protein analytes and combinations of CSF protein markers for stratifying individuals based on the severity of Huntington disease. We conducted a hypothesis-driven analysis of 26 pre-specified protein analytes in CSF from 16 manifest Huntington disease subjects, eight premanifest Huntington disease mutation carriers and eight healthy control individuals using parallel-reaction monitoring mass spectrometry. In addition to reproducing reported changes in previously investigated CSF biomarkers (NEFL, PDYN, and PENK), we also identified novel exploratory CSF proteins (C1QB, CNR1, GNAL, IDO1, IGF2, and PPP1R1B) whose levels were altered in Huntington disease mutation carriers and/or across stages of disease. Moreover, we report strong associations of select CSF proteins with clinical measures of disease severity in manifest Huntington disease subjects (C1QB, CNR1, NEFL, PDYN, PPP1R1B, and TTR) and with years to predicted disease onset in premanifest Huntington disease mutation carriers (ALB, C4B, CTSD, IGHG1, and TTR). Using receiver operating characteristic curve analysis, we identified PENK as being the most discriminant CSF protein for stratifying Huntington disease mutation carriers from controls. We also identified exploratory multi-marker CSF protein panels that improved discrimination of premanifest Huntington disease mutation carriers from controls (PENK, ALB and NEFL), early/mid-stage Huntington disease from premanifest mutation carriers (PPP1R1B, TTR, CHI3L1, and CTSD), and late-stage from early/mid-stage Huntington disease (CNR1, PPP1R1B, BDNF, APOE, and IGHG1) compared with individual CSF proteins. In this study, we demonstrate that combinations of CSF proteins can outperform individual markers for stratifying individuals based on Huntington disease mutation status and disease severity. Moreover, we define exploratory multi-marker CSF protein panels that, if validated, may be used to improve the accuracy of disease-onset predictions, complement existing clinical and imaging biomarkers for monitoring the severity of Huntington disease, and potentially for assessing therapeutic response in clinical trials. Additional studies with CSF collected from larger cohorts of Huntington disease mutation carriers are needed to replicate these exploratory findings.
Collapse
Affiliation(s)
- Nicholas S Caron
- Centre for Molecular Medicine and Therapeutics, BC Children’s Hospital Research Institute, Department of Medical Genetics, University of British Columbia, Vancouver, BC V5Z 4H4, Canada
| | - Arsalan S Haqqani
- Human Health Therapeutics Research Centre, National Research Council of Canada, Ottawa, ON K1A 0R6, Canada
| | - Akshdeep Sandhu
- BC Children’s Hospital Research Institute, University of British Columbia, Vancouver, BC V5Z 4H4, Canada
| | - Amirah E Aly
- Centre for Molecular Medicine and Therapeutics, BC Children’s Hospital Research Institute, Department of Medical Genetics, University of British Columbia, Vancouver, BC V5Z 4H4, Canada
| | - Hailey Findlay Black
- Centre for Molecular Medicine and Therapeutics, BC Children’s Hospital Research Institute, Department of Medical Genetics, University of British Columbia, Vancouver, BC V5Z 4H4, Canada
| | - Jeffrey N Bone
- BC Children’s Hospital Research Institute, University of British Columbia, Vancouver, BC V5Z 4H4, Canada
| | - Jodi L McBride
- Division of Neuroscience, Oregon National Primate Research Center, Beaverton, OR 97006, USA
- Department of Behavioral Neuroscience, Oregon Health and Science University, Portland, OR 97239, USA
| | - Abedelnasser Abulrob
- Human Health Therapeutics Research Centre, National Research Council of Canada, Ottawa, ON K1A 0R6, Canada
| | - Danica Stanimirovic
- Human Health Therapeutics Research Centre, National Research Council of Canada, Ottawa, ON K1A 0R6, Canada
| | - Blair R Leavitt
- Centre for Molecular Medicine and Therapeutics, BC Children’s Hospital Research Institute, Department of Medical Genetics, University of British Columbia, Vancouver, BC V5Z 4H4, Canada
| | - Michael R Hayden
- Centre for Molecular Medicine and Therapeutics, BC Children’s Hospital Research Institute, Department of Medical Genetics, University of British Columbia, Vancouver, BC V5Z 4H4, Canada
| |
Collapse
|
12
|
Velázquez E, Le Baut Ayuso Y, Blázquez E, Ruiz-Albusac JM. Glucose and Several Mitogenic Agents Modulate the Glucagon-Like Peptide-2 Receptor Expression in Cultured Rat Astrocytes. J Alzheimers Dis Rep 2022; 6:723-732. [PMID: 36606205 PMCID: PMC9741749 DOI: 10.3233/adr-220043] [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: 06/30/2022] [Accepted: 10/20/2022] [Indexed: 11/16/2022] Open
Abstract
Background Glucagon-like peptide-2 (GLP-2) is an intestinal trophic factor that induces astrocyte proliferation through its own receptor (GLP-2R), but the control of its expression is not well known. Objective To study the effects of glucose and of different mitogenic agents on the control of GLP-2R expression in cultured rat astrocytes. Methods GLP-2R mRNA content was measured by quantitative RT-PCR. Results GLP-2R expression was higher in proliferating than in resting cells. The expression was dependent of glucose concentration both in the absence and in the presence of GLP-2. In the presence of a high glucose concentration, GLP-2, PDGF, and PDGF plus GLP-2 presented opposite effects depending on the incubation time. However, insulin, IGF-1, and EGF alone, and plus GLP-2 had no effect. IGF-2, but not IGF-2 plus GLP-2, increased the expression. On the contrary, NGF decreased the GLP-2R expression, but NGF plus GLP-2 increased it even until values similar to those obtained with GLP-2 alone. Interestingly, in the presence of a low glucose concentration, leptin and NPY produced a significant reduction of GLP-2R expression. Conclusion Astrocytes are distributed throughout the brain, where GLP-2 appears to have important functions. Since these cells express the GLP-2R, the results of this study could be considered of interest to advance the knowledge of the role of GLP-2 signaling in the CNS, which should lead a better understanding of the events that occur under normal and pathophysiological conditions.
Collapse
Affiliation(s)
- Esther Velázquez
- Department of Biochemistry and Molecular Biology, Faculty of Medicine, Complutense University, Madrid, Spain,Health Research Institute of the San Carlos Clinical Hospital, Madrid, Spain
| | - Yannick Le Baut Ayuso
- Department of Biochemistry and Molecular Biology, Faculty of Medicine, Complutense University, Madrid, Spain
| | - Enrique Blázquez
- Department of Biochemistry and Molecular Biology, Faculty of Medicine, Complutense University, Madrid, Spain,Health Research Institute of the San Carlos Clinical Hospital, Madrid, Spain
| | - Juan Miguel Ruiz-Albusac
- Department of Biochemistry and Molecular Biology, Faculty of Medicine, Complutense University, Madrid, Spain,Health Research Institute of the San Carlos Clinical Hospital, Madrid, Spain,Correspondence to: Juan Miguel Ruiz-Albusac, Departamento de Bioquímica y Biología Molecular, Facultad de Medicina, Universidad Complutense, 28040-Madrid, Spain. Tel.: +34 913941446; E-mail:
| |
Collapse
|
13
|
Zhu Y, Chen L, Song B, Cui Z, Chen G, Yu Z, Song B. Insulin-like Growth Factor-2 (IGF-2) in Fibrosis. Biomolecules 2022; 12:1557. [PMID: 36358907 PMCID: PMC9687531 DOI: 10.3390/biom12111557] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2022] [Revised: 10/19/2022] [Accepted: 10/21/2022] [Indexed: 08/27/2023] Open
Abstract
The insulin family consists of insulin, insulin-like growth factor 1 (IGF-1), insulin-like growth factor 2 (IGF-2), their receptors (IR, IGF-1R and IGF-2R), and their binding proteins. All three ligands are involved in cell proliferation, apoptosis, protein synthesis and metabolism due to their homologous sequences and structural similarities. Insulin-like growth factor 2, a member of the insulin family, plays an important role in embryonic development, metabolic disorders, and tumorigenesis by combining with three receptors with different degrees of affinity. The main pathological feature of various fibrotic diseases is the excessive deposition of extracellular matrix (ECM) after tissue and organ damage, which eventually results in organic dysfunction because scar formation replaces tissue parenchyma. As a mitogenic factor, IGF-2 is overexpressed in many fibrotic diseases. It can promote the proliferation of fibroblasts significantly, as well as the production of ECM in a time- and dose-dependent manner. This review aims to describe the expression changes and fibrosis-promoting effects of IGF-2 in the skin, oral cavity, heart, lung, liver, and kidney fibrotic tissues.
Collapse
Affiliation(s)
| | | | | | | | | | - Zhou Yu
- Department of Plastic and Reconstructive Surgery, Xijing Hospital, Fourth Military Medical University, Xi’an 710032, China
| | - Baoqiang Song
- Department of Plastic and Reconstructive Surgery, Xijing Hospital, Fourth Military Medical University, Xi’an 710032, China
| |
Collapse
|
14
|
The Genomic Architecture of Pregnancy-Associated Plasticity in the Maternal Mouse Hippocampus. eNeuro 2022; 9:ENEURO.0117-22.2022. [PMID: 36239981 PMCID: PMC9522463 DOI: 10.1523/eneuro.0117-22.2022] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2022] [Revised: 08/10/2022] [Accepted: 08/25/2022] [Indexed: 12/15/2022] Open
Abstract
Pregnancy is associated with extraordinary plasticity in the maternal brain. Studies in humans and other mammals suggest extensive structural and functional remodeling of the female brain during and after pregnancy. However, we understand remarkably little about the molecular underpinnings of this natural phenomenon. To gain insight into pregnancy-associated hippocampal plasticity, we performed single nucleus RNA sequencing (snRNA-seq) and snATAC-seq from the mouse hippocampus before, during, and after pregnancy. We identified cell type-specific transcriptional and epigenetic signatures associated with pregnancy and postpartum adaptation. In addition, we analyzed receptor-ligand interactions and transcription factor (TF) motifs that inform hippocampal cell type identity and provide evidence of pregnancy-associated adaption. In total, these data provide a unique resource of coupled transcriptional and epigenetic data across a dynamic time period in the mouse hippocampus and suggest opportunities for functional interrogation of hormone-mediated plasticity.
Collapse
|
15
|
Nutrition influences nervous system development by regulating neural stem cell homeostasis. PROCEEDINGS OF THE INDIAN NATIONAL SCIENCE ACADEMY 2022. [DOI: 10.1007/s43538-022-00107-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
|
16
|
The Effect of Tension on Gene Expression in Primary Nerve Repair via the Epineural Suture Technique. J Surg Res 2022; 277:211-223. [DOI: 10.1016/j.jss.2022.03.029] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2021] [Revised: 02/17/2022] [Accepted: 03/10/2022] [Indexed: 11/24/2022]
|
17
|
Dong X, Chen J, Xue L, Al‐hawwas M. Treadmill training improves cognitive function by increasing IGF2 targeted downregulation of miRNA-483. IBRAIN 2022; 8:264-275. [PMID: 37786740 PMCID: PMC10529000 DOI: 10.1002/ibra.12051] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/10/2022] [Revised: 06/22/2022] [Accepted: 06/22/2022] [Indexed: 10/04/2023]
Abstract
Optimal exercise can promote the development of cognitive functions. Nevertheless, mechanisms that elicit these positive effects of exercise still need to be elucidated. Insulin-like growth factor 2 (IGF2) is known to act as a potent enhancer of memory and cognitive functions, whereas the mechanism by which IGF2 regulates cognitive functions in terms of moderate treadmill exercise remains largely vague. In the study, rats were subjected to low-, moderate-, and high-intensity treadmill training for 6 weeks. Then, the Morris water maze test was used to investigate spatial learning and memory ability in rats subjected to treadmill exercises of different intensities. Subsequently, gene chip and bioinformatics analyses were used to explore IGF2 and predict target microRNAs (miRNAs). Quantitative real-time polymerase chain reaction, western blot, and immunofluorescence analysis were performed to detect the levels of IGF2. Furthermore, IGF2-small interfering RNA, the miRNA-483-mimic, and the miRNA-483-inhibitor were transfected to determine the role of IGF2 and miRNA-483 in the growth of hippocampal neurons. The results of the Morris water maze test showed that moderate-intensity treadmill training enhanced cognitive functions; meanwhile, the expression of IGF2 was significantly upregulated in the hippocampus after moderate-intensity treadmill exercise. From databases, miRNA-483 was screened and predicted as the target gene of IGF2. Moreover, silencing IGF2 inhibited neurite growth in the hippocampus of rats, the miRNA-483-inhibitor ameliorated silencing IGF2 induced impairment of hippocampal neurons. These findings suggested that treadmill training could enhance cognitive functions, wherein the underlying mechanism involved an increase in the expression of IGF2 and downregulation of miRNA-483.
Collapse
Affiliation(s)
- Xiu‐Juan Dong
- College of Physical EducationHainan Normal UniversityHaikouHainanChina
| | - Jun‐Jie Chen
- Animal Zoology DepartmentKunming Medical UniversityKunmingYunnanChina
| | - Lu‐Lu Xue
- Animal Zoology DepartmentKunming Medical UniversityKunmingYunnanChina
| | - Mohammed Al‐hawwas
- School of Pharmacy and Medical Sciences, Faculty of Health SciencesUniversity of South AustraliaAdelaideSouth AustraliaAustralia
| |
Collapse
|
18
|
The neural stem cell secretome across neurodevelopment. Exp Neurol 2022; 355:114142. [PMID: 35709983 DOI: 10.1016/j.expneurol.2022.114142] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2021] [Revised: 06/03/2022] [Accepted: 06/07/2022] [Indexed: 11/21/2022]
Abstract
Neural stem cell (NSC) based therapies are at the forefront of regenerative medicine strategies to combat illness and injury of the central nervous system (CNS). In addition to their ability to produce new cells, NSCs secrete a variety of products, known collectively as the NSC secretome, that have been shown to ameliorate CNS disease pathology and promote recovery. As pre-clinical and clinical research to harness the NSC secretome for therapeutic purposes advances, a more thorough understanding of the endogenous NSC secretome can provide useful insight into the functional capabilities of NSCs. In this review, we focus on research investigating the autocrine and paracrine functions of the endogenous NSC secretome across life. Throughout development and adulthood, we find evidence that the NSC secretome is a critical component of how endogenous NSCs regulate themselves and their niche. We also find gaps in current literature, most notably in the clinically-relevant domain of endogenous NSC paracrine function in the injured CNS. Future investigations to further define the endogenous NSC secretome and its role in CNS tissue regulation are necessary to bolster our understanding of NSC-niche interactions and to aid in the generation of safe and effective NSC-based therapies.
Collapse
|
19
|
Subventricular zone adult mouse neural stem cells require insulin receptor for self-renewal. Stem Cell Reports 2022; 17:1411-1427. [PMID: 35523180 PMCID: PMC9213826 DOI: 10.1016/j.stemcr.2022.04.007] [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: 08/25/2019] [Revised: 04/08/2022] [Accepted: 04/11/2022] [Indexed: 11/25/2022] Open
Abstract
The insulin receptor (INSR) is an evolutionarily conserved signaling protein that regulates development and cellular metabolism. INSR signaling promotes neurogenesis in Drosophila; however, a specific role for the INSR in maintaining adult neural stem cells (NSCs) in mammals has not been investigated. We show that conditionally deleting the Insr gene in adult mouse NSCs reduces subventricular zone NSCs by ∼70% accompanied by a corresponding increase in progenitors. Insr deletion also produced hyposmia caused by aberrant olfactory bulb neurogenesis. Interestingly, hippocampal neurogenesis and hippocampal-dependent behaviors were unperturbed. Highly aggressive proneural and mesenchymal glioblastomas had high INSR/insulin-like growth factor (IGF) pathway gene expression, and isolated glioma stem cells had an aberrantly high ratio of INSR:IGF type 1 receptor. Moreover, INSR knockdown inhibited GBM tumorsphere growth. Altogether, these data demonstrate that the INSR is essential for a subset of normal NSCs, as well as for brain tumor stem cell self-renewal. Insulin receptor (INSR) is essential for adult SVZ neural stem cell self-renewal INSR deletion causes hyposmia with increased olfactory bulb neurogenesis Hippocampal stem cells (and associated behaviors) do not require INSR Glioblastomas overexpress INSR pathway components required for tumorsphere growth
Collapse
|
20
|
Lehman NL, Spassky N, Sak M, Webb A, Zumbar CT, Usubalieva A, Alkhateeb KJ, McElroy JP, Maclean KH, Fadda P, Liu T, Gangalapudi V, Carver J, Abdullaev Z, Timmers C, Parker JR, Pierson CR, Mobley BC, Gokden M, Hattab EM, Parrett T, Cooke RX, Lehman TD, Costinean S, Parwani A, Williams BJ, Jensen RL, Aldape K, Mistry AM. Astroblastomas exhibit radial glia stem cell lineages and differential expression of imprinted and X-inactivation escape genes. Nat Commun 2022; 13:2083. [PMID: 35440587 PMCID: PMC9018799 DOI: 10.1038/s41467-022-29302-8] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2020] [Accepted: 03/07/2022] [Indexed: 02/04/2023] Open
Abstract
Astroblastomas (ABs) are rare brain tumors of unknown origin. We performed an integrative genetic and epigenetic analysis of AB-like tumors. Here, we show that tumors traceable to neural stem/progenitor cells (radial glia) that emerge during early to later brain development occur in children and young adults, respectively. Tumors with MN1-BEND2 fusion appear to present exclusively in females and exhibit overexpression of genes expressed prior to 25 post-conception weeks (pcw), including genes enriched in early ventricular zone radial glia and ependymal tumors. Other, histologically classic ABs overexpress or harbor mutations of mitogen-activated protein kinase pathway genes, outer and truncated radial glia genes, and genes expressed after 25 pcw, including neuronal and astrocyte markers. Findings support that AB-like tumors arise in the context of epigenetic and genetic changes in neural progenitors. Selective gene fusion, variable imprinting and/or chromosome X-inactivation escape resulting in biallelic overexpression may contribute to female predominance of AB molecular subtypes.
Collapse
Affiliation(s)
- Norman L Lehman
- Department of Pathology and Laboratory Medicine, University of Louisville, Louisville, KY, 40202, USA.
- Department of Biochemistry and Molecular Genetics, University of Louisville, Louisville, KY, 40202, USA.
- The Brown Cancer Center, University of Louisville, Louisville, KY, 40202, USA.
| | - Nathalie Spassky
- Institut de Biologie de l'ENS (IBENS), Inserm, CNRS, École Normale Supérieure, PSL Research University, Paris, France
| | - Müge Sak
- Department of Pathology and Laboratory Medicine, University of Louisville, Louisville, KY, 40202, USA
- Department of Biochemistry and Molecular Genetics, University of Louisville, Louisville, KY, 40202, USA
| | - Amy Webb
- Department of Biomedical Informatics, The Ohio State University, Columbus, OH, 43210, USA
| | - Cory T Zumbar
- Department of Pathology and Laboratory Medicine, University of Louisville, Louisville, KY, 40202, USA
| | - Aisulu Usubalieva
- Department of Biomedical Informatics, University of Arkansas for Medical Sciences, Little Rock, AR, 72205, USA
| | - Khaled J Alkhateeb
- Department of Pathology and Laboratory Medicine, University of Louisville, Louisville, KY, 40202, USA
| | - Joseph P McElroy
- Center for Biostatistics, Department of Biomedical Informatics, The Ohio State University, Columbus, OH, 43210, USA
| | | | - Paolo Fadda
- Department of Cancer Biology, The Ohio State University, Columbus, OH, 43210, USA
| | - Tom Liu
- Solid Tumor Translational Science, The Ohio State University, Columbus, OH, 43210, USA
| | - Vineela Gangalapudi
- Laboratory of Pathology, Center for Cancer Research, National Cancer Institute, Bethesda, MD, 20892, USA
| | - Jamie Carver
- Department of Pathology and Laboratory Medicine, University of Louisville, Louisville, KY, 40202, USA
| | - Zied Abdullaev
- Laboratory of Pathology, Center for Cancer Research, National Cancer Institute, Bethesda, MD, 20892, USA
| | - Cynthia Timmers
- Solid Tumor Translational Science, The Ohio State University, Columbus, OH, 43210, USA
| | - John R Parker
- Department of Pathology and Laboratory Medicine, University of Louisville, Louisville, KY, 40202, USA
| | - Christopher R Pierson
- Department of Pathology and Laboratory Medicine, Nationwide Children's Hospital, Columbus, OH, 43205, USA
- Department of Pathology, The Ohio State University, Columbus, OH, 43210, USA
| | - Bret C Mobley
- Department of Pathology, Microbiology and Immunology, Vanderbilt University, Nashville, TN, 37232, USA
| | - Murat Gokden
- Department of Pathology and Laboratory Services, University of Arkansas for Medical Sciences, Little Rock, AR, 72205, USA
| | - Eyas M Hattab
- Department of Pathology and Laboratory Medicine, University of Louisville, Louisville, KY, 40202, USA
| | - Timothy Parrett
- Department of Pathology and Anatomic Sciences, University of Missouri, Columbia, MO, 65212, USA
| | - Ralph X Cooke
- Department of Pathology, The Ohio State University, Columbus, OH, 43210, USA
| | - Trang D Lehman
- Department of Family and Community Medicine, Contra Costa County Health System, Martinez, CA, 94553, USA
| | - Stefan Costinean
- Department of Pathology, Banner Gateway Medical Center, MD Anderson Cancer Center, Tempe, AZ, 85284, USA
| | - Anil Parwani
- Department of Pathology, The Ohio State University, Columbus, OH, 43210, USA
| | - Brian J Williams
- Department of Neurosurgery, University of Louisville, Louisville, KY, 40202, USA
| | - Randy L Jensen
- Department of Neurosurgery, University of Utah, Salt Lake City, UT, 84132, USA
| | - Kenneth Aldape
- Laboratory of Pathology, Center for Cancer Research, National Cancer Institute, Bethesda, MD, 20892, USA
| | - Akshitkumar M Mistry
- Department of Neurological Surgery, Vanderbilt University, Nashville, TN, 37232, USA
| |
Collapse
|
21
|
Wani GA, Sprenger HG, Ndoci K, Chandragiri S, Acton RJ, Schatton D, Kochan SMV, Sakthivelu V, Jevtic M, Seeger JM, Müller S, Giavalisco P, Rugarli EI, Motori E, Langer T, Bergami M. Metabolic control of adult neural stem cell self-renewal by the mitochondrial protease YME1L. Cell Rep 2022; 38:110370. [PMID: 35172139 DOI: 10.1016/j.celrep.2022.110370] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2021] [Revised: 11/29/2021] [Accepted: 01/20/2022] [Indexed: 01/17/2023] Open
Abstract
The transition between quiescence and activation in neural stem and progenitor cells (NSPCs) is coupled with reversible changes in energy metabolism with key implications for lifelong NSPC self-renewal and neurogenesis. How this metabolic plasticity is ensured between NSPC activity states is unclear. We find that a state-specific rewiring of the mitochondrial proteome by the i-AAA peptidase YME1L is required to preserve NSPC self-renewal. YME1L controls the abundance of numerous mitochondrial substrates in quiescent NSPCs, and its deletion activates a differentiation program characterized by broad metabolic changes causing the irreversible shift away from a fatty-acid-oxidation-dependent state. Conditional Yme1l deletion in adult NSPCs in vivo results in defective self-renewal and premature differentiation, ultimately leading to NSPC pool depletion. Our results disclose an important role for YME1L in coordinating the switch between metabolic states of NSPCs and suggest that NSPC fate is regulated by compartmentalized changes in protein network dynamics.
Collapse
Affiliation(s)
- Gulzar A Wani
- Cologne Excellence Cluster on Cellular Stress Responses in Aging-Associated Diseases (CECAD), University of Cologne, Joseph-Stelzmann-Str. 26, 50931 Cologne, Germany
| | - Hans-Georg Sprenger
- Max Planck Institute for Biology of Ageing, Joseph-Stelzmann-Str. 9b, 50931 Cologne, Germany
| | - Kristiano Ndoci
- Cologne Excellence Cluster on Cellular Stress Responses in Aging-Associated Diseases (CECAD), University of Cologne, Joseph-Stelzmann-Str. 26, 50931 Cologne, Germany
| | - Srikanth Chandragiri
- Max Planck Institute for Biology of Ageing, Joseph-Stelzmann-Str. 9b, 50931 Cologne, Germany
| | - Richard James Acton
- Cologne Excellence Cluster on Cellular Stress Responses in Aging-Associated Diseases (CECAD), University of Cologne, Joseph-Stelzmann-Str. 26, 50931 Cologne, Germany
| | - Désirée Schatton
- Cologne Excellence Cluster on Cellular Stress Responses in Aging-Associated Diseases (CECAD), University of Cologne, Joseph-Stelzmann-Str. 26, 50931 Cologne, Germany
| | - Sandra M V Kochan
- Cologne Excellence Cluster on Cellular Stress Responses in Aging-Associated Diseases (CECAD), University of Cologne, Joseph-Stelzmann-Str. 26, 50931 Cologne, Germany
| | - Vignesh Sakthivelu
- Cologne Excellence Cluster on Cellular Stress Responses in Aging-Associated Diseases (CECAD), University of Cologne, Joseph-Stelzmann-Str. 26, 50931 Cologne, Germany
| | - Milica Jevtic
- Cologne Excellence Cluster on Cellular Stress Responses in Aging-Associated Diseases (CECAD), University of Cologne, Joseph-Stelzmann-Str. 26, 50931 Cologne, Germany
| | - Jens M Seeger
- Institute for Molecular Immunology, CECAD Research Center and University Hospital Cologne, Joseph-Stelzmann-Str. 26, 50931 Cologne, Germany
| | - Stefan Müller
- Cologne Excellence Cluster on Cellular Stress Responses in Aging-Associated Diseases (CECAD), University of Cologne, Joseph-Stelzmann-Str. 26, 50931 Cologne, Germany; Center for Molecular Medicine, Robert-Koch-Str. 21, 50931 Cologne, Germany
| | - Patrick Giavalisco
- Max Planck Institute for Biology of Ageing, Joseph-Stelzmann-Str. 9b, 50931 Cologne, Germany
| | - Elena I Rugarli
- Cologne Excellence Cluster on Cellular Stress Responses in Aging-Associated Diseases (CECAD), University of Cologne, Joseph-Stelzmann-Str. 26, 50931 Cologne, Germany; Center for Molecular Medicine, Robert-Koch-Str. 21, 50931 Cologne, Germany; Institute of Genetics, University of Cologne, Zülpicher Str. 47a, 50674 Cologne, Germany
| | - Elisa Motori
- Cologne Excellence Cluster on Cellular Stress Responses in Aging-Associated Diseases (CECAD), University of Cologne, Joseph-Stelzmann-Str. 26, 50931 Cologne, Germany; Max Planck Institute for Biology of Ageing, Joseph-Stelzmann-Str. 9b, 50931 Cologne, Germany
| | - Thomas Langer
- Cologne Excellence Cluster on Cellular Stress Responses in Aging-Associated Diseases (CECAD), University of Cologne, Joseph-Stelzmann-Str. 26, 50931 Cologne, Germany; Max Planck Institute for Biology of Ageing, Joseph-Stelzmann-Str. 9b, 50931 Cologne, Germany
| | - Matteo Bergami
- Cologne Excellence Cluster on Cellular Stress Responses in Aging-Associated Diseases (CECAD), University of Cologne, Joseph-Stelzmann-Str. 26, 50931 Cologne, Germany; Center for Molecular Medicine, Robert-Koch-Str. 21, 50931 Cologne, Germany; Institute of Genetics, University of Cologne, Zülpicher Str. 47a, 50674 Cologne, Germany; University of Cologne, Faculty of Medicine and University Hospital Cologne, Kerpener Str. 62, 50937 Cologne, Germany.
| |
Collapse
|
22
|
Insulin-like growth factor 2 and autophagy gene expression alteration arise as potential biomarkers in Parkinson's disease. Sci Rep 2022; 12:2038. [PMID: 35132125 PMCID: PMC8821705 DOI: 10.1038/s41598-022-05941-1] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2021] [Accepted: 01/20/2022] [Indexed: 11/10/2022] Open
Abstract
Insulin-like growth factor 2 (IGF2) and autophagy-related genes have been proposed as biomolecules of interest related to idiopathic Parkinson’s disease (PD). The objective of this study was to determine the IGF2 and IGF1 levels in plasma and peripheral blood mononuclear cells (PBMCs) from patients with moderately advanced PD and explore the potential correlation with autophagy-related genes in the same blood samples. IGF1 and IGF2 levels in patients' plasma were measured by ELISA, and the IGF2 expression levels were determined by real-time PCR and Western blot in PBMCs. The expression of autophagy-related genes was evaluated by real-time PCR. The results show a significant decrease in IGF2 plasma levels in PD patients compared with a healthy control group. We also report a dramatic decrease in IGF2 mRNA and protein levels in PBMCs from PD patients. In addition, we observed a downregulation of key components of the initial stages of the autophagy process. Although IGF2 levels were not directly correlated with disease severity, we found a correlation between its levels and autophagy gene profile expression in a sex-dependent pattern from the same samples. To further explore this correlation, we treated mice macrophages cell culture with α-synuclein and IGF2. While α-synuclein treatment decreased levels Atg5, IGF2 treatment reverted these effects, increasing Atg5 and Beclin1 levels. Our results suggest a relationship between IGF2 levels and the autophagy process in PD and their potential application as multi-biomarkers to determine PD patients' stages of the disease.
Collapse
|
23
|
Li L, Medina-Menéndez C, García-Corzo L, Córdoba-Beldad CM, Quiroga AC, Calleja Barca E, Zinchuk V, Muñoz-López S, Rodríguez-Martín P, Ciorraga M, Colmena I, Fernández S, Vicario C, Nicolis SK, Lefebvre V, Mira H, Morales AV. SoxD genes are required for adult neural stem cell activation. Cell Rep 2022; 38:110313. [PMID: 35108528 DOI: 10.1016/j.celrep.2022.110313] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2021] [Revised: 10/20/2021] [Accepted: 01/07/2022] [Indexed: 01/17/2023] Open
Abstract
The adult neurogenic niche in the hippocampus is maintained through activation of reversibly quiescent neural stem cells (NSCs) with radial glia-like morphology (RGLs). Here, we show that the expression of SoxD transcription factors Sox5 and Sox6 is enriched in activated RGLs. Using inducible deletion of Sox5 or Sox6 in the adult mouse brain, we show that both genes are required for RGL activation and the generation of new neurons. Conversely, Sox5 overexpression in cultured NSCs interferes with entry in quiescence. Mechanistically, expression of the proneural protein Ascl1 (a key RGL regulator) is severely downregulated in SoxD-deficient RGLs, and Ascl1 transcription relies on conserved Sox motifs. Additionally, loss of Sox5 hinders the RGL activation driven by neurogenic stimuli such as environmental enrichment. Altogether, our data suggest that SoxD genes are key mediators in the transition of adult RGLs from quiescence to an activated mitotic state under physiological situations.
Collapse
Affiliation(s)
| | | | | | | | | | | | | | | | | | | | | | | | - Carlos Vicario
- Instituto Cajal, CSIC, 28002 Madrid, Spain; CIBERNED-Instituto de Salud Carlos III, 28029 Madrid, Spain
| | | | | | - Helena Mira
- Instituto de Biomedicina de Valencia, CSIC, 46010 Valencia, Spain
| | | |
Collapse
|
24
|
Nieto-Estevez V, Changarathil G, Adeyeye AO, Coppin MO, Kassim RS, Zhu J, Hsieh J. HDAC1 Regulates Neuronal Differentiation. Front Mol Neurosci 2022; 14:815808. [PMID: 35095417 PMCID: PMC8789757 DOI: 10.3389/fnmol.2021.815808] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2021] [Accepted: 12/21/2021] [Indexed: 11/13/2022] Open
Abstract
In adult hippocampal neurogenesis, chromatin modification plays an important role in neural stem cell self-renewal and differentiation by regulating the expression of multiple genes. Histone deacetylases (HDACs), which remove acetyl groups from histones, create a non-permissive chromatin that prevents transcription of genes involved in adult neurogenesis. HDAC inhibitors have been shown to promote adult neurogenesis and have also been used to treat nervous system disorders, such as epilepsy. However, most HDAC inhibitors are not specific and may have other targets. Therefore, it is important to decipher the role of individual HDACs in adult hippocampal neurogenesis. HDACs 1, 2, and 3 have been found expressed at different cellular stages during neurogenesis. Conditional deletion of HDAC2 in neural stem cells impairs neuronal differentiation in adult hippocampus. HDAC3 supports proliferation of adult hippocampal neural stem/progenitor cells. The role of HDAC1 in adult neurogenesis remains still open. Here, we used a conditional knock-out mouse to block HDAC1 expression in neural stem cells (Nestin+ cells) during hippocampal neurogenesis. Our results showed that both HDAC1 and HDAC2 are expressed in all cellular stages during hippocampal neurogenesis. Moreover, we found that deletion of HDAC1 by viral infection of neural stem cells is sufficient to compromise neuronal differentiation in vitro. However, we were unable to reduce the expression of HDAC1 in vivo using Nestin-CreERT2 mice. Understanding the role of HDAC1 may lead to ways to control stem cell proliferation and neuronal regeneration in the adult hippocampus, and to more specific HDAC therapeutics for neurological disorders.
Collapse
Affiliation(s)
- Vanesa Nieto-Estevez
- Department of Neuroscience, Developmental and Regenerative Biology, The University of Texas at San Antonio, San Antonio, TX, United States
- Brain Health Consortium, The University of Texas at San Antonio, San Antonio, TX, United States
| | - Gopakumar Changarathil
- Department of Neuroscience, Developmental and Regenerative Biology, The University of Texas at San Antonio, San Antonio, TX, United States
- Brain Health Consortium, The University of Texas at San Antonio, San Antonio, TX, United States
| | - Adebayo Olukayode Adeyeye
- Department of Neuroscience, Developmental and Regenerative Biology, The University of Texas at San Antonio, San Antonio, TX, United States
- Brain Health Consortium, The University of Texas at San Antonio, San Antonio, TX, United States
| | - Marissa Olga Coppin
- Department of Neuroscience, Developmental and Regenerative Biology, The University of Texas at San Antonio, San Antonio, TX, United States
- Brain Health Consortium, The University of Texas at San Antonio, San Antonio, TX, United States
| | - Rawan Serena Kassim
- Department of Neuroscience, Developmental and Regenerative Biology, The University of Texas at San Antonio, San Antonio, TX, United States
- Brain Health Consortium, The University of Texas at San Antonio, San Antonio, TX, United States
| | - Jingfei Zhu
- Department of Molecular Biology, UT Southwestern Medical Center, Dallas, TX, United States
| | - Jenny Hsieh
- Department of Neuroscience, Developmental and Regenerative Biology, The University of Texas at San Antonio, San Antonio, TX, United States
- Brain Health Consortium, The University of Texas at San Antonio, San Antonio, TX, United States
- *Correspondence: Jenny Hsieh,
| |
Collapse
|
25
|
MUTYH Actively Contributes to Microglial Activation and Impaired Neurogenesis in the Pathogenesis of Alzheimer's Disease. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2021; 2021:8635088. [PMID: 34970419 PMCID: PMC8714343 DOI: 10.1155/2021/8635088] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/02/2021] [Revised: 10/29/2021] [Accepted: 11/19/2021] [Indexed: 12/12/2022]
Abstract
Oxidative stress is a major risk factor for Alzheimer's disease (AD), which is characterized by brain atrophy, amyloid plaques, neurofibrillary tangles, and loss of neurons. 8-Oxoguanine, a major oxidatively generated nucleobase highly accumulated in the AD brain, is known to cause neurodegeneration. In mammalian cells, several enzymes play essential roles in minimizing the 8-oxoguanine accumulation in DNA. MUTYH with adenine DNA glycosylase activity excises adenine inserted opposite 8-oxoguanine in DNA. MUTYH is reported to actively contribute to the neurodegenerative process in Parkinson and Huntington diseases and some mouse models of neurodegenerative diseases by accelerating neuronal dysfunction and microgliosis under oxidative conditions; however, whether or not MUTYH is involved in AD pathogenesis remains unclear. In the present study, we examined the contribution of MUTYH to the AD pathogenesis. Using postmortem human brains, we showed that various types of MUTYH transcripts and proteins are expressed in most hippocampal neurons and glia in both non-AD and AD brains. We further introduced MUTYH deficiency into App NL-G-F/NL-G-F knock-in AD model mice, which produce humanized toxic amyloid-β without the overexpression of APP protein, and investigated the effects of MUTYH deficiency on the behavior, pathology, gene expression, and neurogenesis. MUTYH deficiency improved memory impairment in App NL-G-F/NL-G-F mice, accompanied by reduced microgliosis. Gene expression profiling strongly suggested that MUTYH is involved in the microglial response pathways under AD pathology and contributes to the phagocytic activity of disease-associated microglia. We also found that MUTYH deficiency ameliorates impaired neurogenesis in the hippocampus, thus improving memory impairment. In conclusion, we propose that MUTYH, which is expressed in the hippocampus of AD patients as well as non-AD subjects, actively contributes to memory impairment by inducing microgliosis with poor neurogenesis in the preclinical AD phase and that MUTYH is a novel therapeutic target for AD, as its deficiency is highly beneficial for ameliorating AD pathogenesis.
Collapse
|
26
|
Landry T, Huang H. Mini review: The relationship between energy status and adult hippocampal neurogenesis. Neurosci Lett 2021; 765:136261. [PMID: 34562518 DOI: 10.1016/j.neulet.2021.136261] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2021] [Revised: 08/09/2021] [Accepted: 09/17/2021] [Indexed: 01/10/2023]
Abstract
The ability to generate new hippocampal neurons throughout adulthood and successfully integrate them into existing neural networks is critical to cognitive function, while disordered regulation of this process results in neurodegenerative or psychiatric disease. Consequently, identifying the molecular mechanisms promoting homeostatic hippocampal neurogenesis in adults is essential to understanding the etiologies of these disorders and developing therapeutic interventions. For example, recent evidence identifies a strong association between metabolic function and adult hippocampal neurogenesis. Hippocampal neural stem cell (NSC) fate dynamically fluctuates with changes in substrate availability and energy status (AMP/ATP and NAD+/NADH ratios). Furthermore, many metabolic hormones, such as insulin, insulin-like growth factors, and leptin exhibit dual functions also modulating hippocampal neurogenesis and neuron survivability. These diverse metabolic inputs to NSC's from various tissues seemingly suggest the existence of a system in which energy status can finely modulate hippocampal neurogenesis. Supporting this hypothesis, interventions promoting energy balance, such as caloric restriction, intermittent fasting, and exercise, have shown encouraging potential enhancing hippocampal neurogenesis and cognitive function. Overall, there is a clear relationship between whole body energy status, adult hippocampal neurogenesis, and neuron survival; however, the molecular mechanisms underlying this phenomenon are multifaceted. Thus, the aim of this review is to analyze the literature investigating energy status-mediated regulation of adult neurogenesis in the hippocampus, highlight the neurocircuitry and intracellular signaling involved, and propose impactful future directions in the field.
Collapse
Affiliation(s)
- Taylor Landry
- East Carolina Diabetes and Obesity Institute, East Carolina University, Greenville, NC, USA; Department of Kinesiology, East Carolina University, Greenville, NC, USA; Human Performance Laboratory, College of Human Performance and Health, East Carolina University, Greenville, NC, USA.
| | - Hu Huang
- East Carolina Diabetes and Obesity Institute, East Carolina University, Greenville, NC, USA; Department of Kinesiology, East Carolina University, Greenville, NC, USA; Human Performance Laboratory, College of Human Performance and Health, East Carolina University, Greenville, NC, USA; Department of Physiology, East Carolina University, Greenville, NC, USA.
| |
Collapse
|
27
|
Bicker F, Nardi L, Maier J, Vasic V, Schmeisser MJ. Criss-crossing autism spectrum disorder and adult neurogenesis. J Neurochem 2021; 159:452-478. [PMID: 34478569 DOI: 10.1111/jnc.15501] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2021] [Revised: 08/05/2021] [Accepted: 08/28/2021] [Indexed: 12/19/2022]
Abstract
Autism spectrum disorder (ASD) comprises a group of multifactorial neurodevelopmental disorders primarily characterized by deficits in social interaction and repetitive behavior. Although the onset is typically in early childhood, ASD poses a lifelong challenge for both patients and caretakers. Adult neurogenesis (AN) is the process by which new functional neurons are created from neural stem cells existing in the post-natal brain. The entire event is based on a sequence of cellular processes, such as proliferation, specification of cell fate, maturation, and ultimately, synaptic integration into the existing neural circuits. Hence, AN is implicated in structural and functional brain plasticity throughout life. Accumulating evidence shows that impaired AN may underlie some of the abnormal behavioral phenotypes seen in ASD. In this review, we approach the interconnections between the molecular pathways related to AN and ASD. We also discuss existing therapeutic approaches targeting such pathways both in preclinical and clinical studies. A deeper understanding of how ASD and AN reciprocally affect one another could reveal important converging pathways leading to the emergence of psychiatric disorders.
Collapse
Affiliation(s)
- Frank Bicker
- Institute for Microscopic Anatomy and Neurobiology, University Medical Center of the Johannes Gutenberg-University, Mainz, Germany
| | - Leonardo Nardi
- Institute for Microscopic Anatomy and Neurobiology, University Medical Center of the Johannes Gutenberg-University, Mainz, Germany
| | - Jannik Maier
- Institute for Microscopic Anatomy and Neurobiology, University Medical Center of the Johannes Gutenberg-University, Mainz, Germany
| | - Verica Vasic
- Institute for Microscopic Anatomy and Neurobiology, University Medical Center of the Johannes Gutenberg-University, Mainz, Germany
| | - Michael J Schmeisser
- Institute for Microscopic Anatomy and Neurobiology, University Medical Center of the Johannes Gutenberg-University, Mainz, Germany.,Focus Program Translational Neurosciences (FTN), University Medical Center of the Johannes Gutenberg-University, Mainz, Germany
| |
Collapse
|
28
|
Bin Imtiaz MK, Jaeger BN, Bottes S, Machado RAC, Vidmar M, Moore DL, Jessberger S. Declining lamin B1 expression mediates age-dependent decreases of hippocampal stem cell activity. Cell Stem Cell 2021; 28:967-977.e8. [PMID: 33631115 DOI: 10.1016/j.stem.2021.01.015] [Citation(s) in RCA: 33] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2020] [Revised: 11/19/2020] [Accepted: 01/21/2021] [Indexed: 01/04/2023]
Abstract
Neural stem cells (NSCs) generate neurons throughout life in the hippocampal dentate gyrus. With advancing age, levels of neurogenesis sharply drop, which has been associated with a decline in hippocampal memory function. However, cell-intrinsic mechanisms mediating age-related changes in NSC activity remain largely unknown. Here, we show that the nuclear lamina protein lamin B1 (LB1) is downregulated with age in mouse hippocampal NSCs, whereas protein levels of SUN-domain containing protein 1 (SUN1), previously implicated in Hutchinson-Gilford progeria syndrome (HGPS), increase. Balancing the levels of LB1 and SUN1 in aged NSCs restores the strength of the endoplasmic reticulum diffusion barrier that is associated with segregation of aging factors in proliferating NSCs. Virus-based restoration of LB1 expression in aged NSCs enhances stem cell activity in vitro and increases progenitor cell proliferation and neurogenesis in vivo. Thus, we here identify a mechanism that mediates age-related decline of neurogenesis in the mammalian hippocampus.
Collapse
Affiliation(s)
- Muhammad Khadeesh Bin Imtiaz
- Laboratory of Neural Plasticity, Faculties of Medicine and Science, Brain Research Institute, University of Zurich, 8057 Zurich, Switzerland
| | - Baptiste N Jaeger
- Laboratory of Neural Plasticity, Faculties of Medicine and Science, Brain Research Institute, University of Zurich, 8057 Zurich, Switzerland
| | - Sara Bottes
- Laboratory of Neural Plasticity, Faculties of Medicine and Science, Brain Research Institute, University of Zurich, 8057 Zurich, Switzerland
| | - Raquel A C Machado
- Laboratory of Neural Plasticity, Faculties of Medicine and Science, Brain Research Institute, University of Zurich, 8057 Zurich, Switzerland
| | - Mojca Vidmar
- Laboratory of Neural Plasticity, Faculties of Medicine and Science, Brain Research Institute, University of Zurich, 8057 Zurich, Switzerland
| | - Darcie L Moore
- Department of Neuroscience, University of Wisconsin-Madison, Madison, WI 53705, USA.
| | - Sebastian Jessberger
- Laboratory of Neural Plasticity, Faculties of Medicine and Science, Brain Research Institute, University of Zurich, 8057 Zurich, Switzerland.
| |
Collapse
|
29
|
Gao Y, Shen M, Gonzalez JC, Dong Q, Kannan S, Hoang JT, Eisinger BE, Pandey J, Javadi S, Chang Q, Wang D, Overstreet-Wadiche L, Zhao X. RGS6 Mediates Effects of Voluntary Running on Adult Hippocampal Neurogenesis. Cell Rep 2021; 32:107997. [PMID: 32755589 DOI: 10.1016/j.celrep.2020.107997] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2020] [Revised: 06/29/2020] [Accepted: 07/15/2020] [Indexed: 01/17/2023] Open
Abstract
Voluntary running enhances adult hippocampal neurogenesis, with consequences for hippocampal-dependent learning ability and mood regulation. However, the underlying mechanism remains unclear. Here, we show that voluntary running induces unique and dynamic gene expression changes specifically within the adult-born hippocampal neurons, with significant impact on genes involved in neuronal maturation and human diseases. We identify the regulator of G protein signaling 6 (RGS6) as a key factor that mediates running impact on adult-born neurons. RGS6 overexpression mimics the positive effects of voluntary running on morphological and physiological maturation of adult new neurons and reduced sensitivity of adult-born neurons to the inhibitory effect of GABAB (γ-Aminobutyric acid B) receptor activation. Knocking down RGS6 abolishes running-enhanced neuronal maturation and hippocampal neurogenesis-dependent learning and anxiolytic effect. Our study provides a data resource showing genome-wide intrinsic molecular changes in adult-born hippocampal neurons that contribute to voluntary running-induced neurogenesis.
Collapse
Affiliation(s)
- Yu Gao
- Waisman Center, University of Wisconsin-Madison, Madison, WI 53705, USA; Department of Neuroscience, School of Medicine and Public Health, University of Wisconsin-Madison, Madison, WI 53705, USA
| | - Minjie Shen
- Waisman Center, University of Wisconsin-Madison, Madison, WI 53705, USA; Department of Neuroscience, School of Medicine and Public Health, University of Wisconsin-Madison, Madison, WI 53705, USA
| | - Jose Carlos Gonzalez
- Department of Neurobiology, University of Alabama at Birmingham, Birmingham, AL 35294, USA
| | - Qiping Dong
- Waisman Center, University of Wisconsin-Madison, Madison, WI 53705, USA
| | - Sudharsan Kannan
- Waisman Center, University of Wisconsin-Madison, Madison, WI 53705, USA; Department of Neuroscience, School of Medicine and Public Health, University of Wisconsin-Madison, Madison, WI 53705, USA
| | - Johnson T Hoang
- Waisman Center, University of Wisconsin-Madison, Madison, WI 53705, USA; Department of Neuroscience, School of Medicine and Public Health, University of Wisconsin-Madison, Madison, WI 53705, USA
| | - Brian E Eisinger
- Waisman Center, University of Wisconsin-Madison, Madison, WI 53705, USA; Department of Neuroscience, School of Medicine and Public Health, University of Wisconsin-Madison, Madison, WI 53705, USA
| | - Jyotsna Pandey
- Waisman Center, University of Wisconsin-Madison, Madison, WI 53705, USA
| | - Sahar Javadi
- Waisman Center, University of Wisconsin-Madison, Madison, WI 53705, USA
| | - Qiang Chang
- Waisman Center, University of Wisconsin-Madison, Madison, WI 53705, USA; Department of Medical Genetics, School of Medicine and Public Health, University of Wisconsin-Madison, Madison, WI 53705, USA; Department of Neurology, School of Medicine and Public Health, University of Wisconsin-Madison, Madison, WI 53705, USA
| | - Daifeng Wang
- Waisman Center, University of Wisconsin-Madison, Madison, WI 53705, USA; Department of Biostatistics and Medical Informatics, School of Medicine and Public Health, University of Wisconsin-Madison, Madison, WI 53705, USA
| | | | - Xinyu Zhao
- Waisman Center, University of Wisconsin-Madison, Madison, WI 53705, USA; Department of Neuroscience, School of Medicine and Public Health, University of Wisconsin-Madison, Madison, WI 53705, USA.
| |
Collapse
|
30
|
Corne R, Besson V, Ait Si Slimane S, Coutan M, Palhas MLC, Shen FX, Marchand-Leroux C, Ogier M, Mongeau R. Insulin-like Growth Factors may be Markers of both Traumatic Brain Injury and Fear-Related Stress. Neuroscience 2021; 466:205-221. [PMID: 33895341 DOI: 10.1016/j.neuroscience.2021.04.013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2020] [Revised: 04/08/2021] [Accepted: 04/15/2021] [Indexed: 10/21/2022]
Abstract
Insulin-like growth factors (IGF) are potent neurotrophic and neurorepair factors that were recently proposed as biomarkers of traumatic brain injury (TBI) and associated psychiatric comorbidities, in particular post-traumatic stress disorder (PSTD). We tested the hypothesis that the IGF system is differentially deregulated in the acute and early chronic stages of TBI, and under acute stress. Plasma and brain IGF1 and IGF2 levels were evaluated in mice 3 weeks and 3 days after a controlled cortical impact (CCI)-induced mild-to-moderate TBI. The effects of conditioned fear on IGF levels and its interaction with TBI (TBI followed, 3 weeks later, by fear-inducing procedures) were also evaluated. In the plasma, IGF1 decreased 3 weeks post-TBI only (-9%), whereas IGF2 remained unaffected. In the brain, IGF1 increased only in the cortex and hippocampus at 3 weeks post-TBI (up to +650%). At 3 days, surpringly, this increase was more diffuse and more important in sham (craniotomized) animals. Additionally, IGF2 immunostaining in brain ventricles was reorganized in TBI animals at both post-TBI stages. Conditioned fear exposure did not influence the effects of early chronic TBI on plasma IGF1 levels, but reduced plasma IGF2 (-6%) levels. It also dampened the effects of TBI on brain IGF systems, but brain IGF1 level and IGF2 tissue distribution remained statistically different from controls under these conditions. In co-exposed animals, DNA methylation increased at the hippocampal Igf1 gene promoter. These results show that blood IGF1 and IGF2 are most reduced in the early chronic phase of TBI and after exposure to a stressful event, and that the brain IGF system is up-regulated after TBI, and more so in the acute phase.
Collapse
Affiliation(s)
- Rémi Corne
- EA4475 Pharmacologie de la Circulation Cérébrale, Université Paris Descartes, 4 avenue de l'Observatoire, 75006 Paris, France
| | - Valérie Besson
- EA4475 Pharmacologie de la Circulation Cérébrale, Université Paris Descartes, 4 avenue de l'Observatoire, 75006 Paris, France; UMR_S1144 Optimisation Thérapeutique en Neuropsychopharmacologie, Université Paris Descartes, 4 avenue de l'Observatoire, 75006 Paris, France
| | - Sofiane Ait Si Slimane
- EA4475 Pharmacologie de la Circulation Cérébrale, Université Paris Descartes, 4 avenue de l'Observatoire, 75006 Paris, France
| | - Mathieu Coutan
- Institut de Recherche Biomédicale de Armées, 1 place du Général Valérie André, 91223 Brétigny sur Orge Cedex, France
| | - Marta L C Palhas
- EA4475 Pharmacologie de la Circulation Cérébrale, Université Paris Descartes, 4 avenue de l'Observatoire, 75006 Paris, France
| | - Fang Xue Shen
- EA4475 Pharmacologie de la Circulation Cérébrale, Université Paris Descartes, 4 avenue de l'Observatoire, 75006 Paris, France
| | - Catherine Marchand-Leroux
- EA4475 Pharmacologie de la Circulation Cérébrale, Université Paris Descartes, 4 avenue de l'Observatoire, 75006 Paris, France; UMR_S1144 Optimisation Thérapeutique en Neuropsychopharmacologie, Université Paris Descartes, 4 avenue de l'Observatoire, 75006 Paris, France
| | - Michaël Ogier
- Institut de Recherche Biomédicale de Armées, 1 place du Général Valérie André, 91223 Brétigny sur Orge Cedex, France
| | - Raymond Mongeau
- EA4475 Pharmacologie de la Circulation Cérébrale, Université Paris Descartes, 4 avenue de l'Observatoire, 75006 Paris, France; CNRS ERL 3649 T3S-1124 - UMR-S 1124 - Addictions, Pharmacology and Therapy, Université Paris Descartes, 45, rue des Saint-Pères, 75006 Paris, France.
| |
Collapse
|
31
|
Beletskiy A, Chesnokova E, Bal N. Insulin-Like Growth Factor 2 As a Possible Neuroprotective Agent and Memory Enhancer-Its Comparative Expression, Processing and Signaling in Mammalian CNS. Int J Mol Sci 2021; 22:ijms22041849. [PMID: 33673334 PMCID: PMC7918606 DOI: 10.3390/ijms22041849] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2021] [Revised: 02/04/2021] [Accepted: 02/08/2021] [Indexed: 12/13/2022] Open
Abstract
A number of studies performed on rodents suggest that insulin-like growth factor 2 (IGF-2) or its analogs may possibly be used for treating some conditions like Alzheimer’s disease, Huntington’s disease, autistic spectrum disorders or aging-related cognitive impairment. Still, for translational research a comparative knowledge about the function of IGF-2 and related molecules in model organisms (rats and mice) and humans is necessary. There is a number of important differences in IGF-2 signaling between species. In the present review we emphasize species-specific patterns of IGF-2 expression in rodents, humans and some other mammals, using, among other sources, publicly available transcriptomic data. We provide a detailed description of Igf2 mRNA expression regulation and pre-pro-IGF-2 protein processing in different species. We also summarize the function of IGF-binding proteins. We describe three different receptors able to bind IGF-2 and discuss the role of IGF-2 signaling in learning and memory, as well as in neuroprotection. We hope that comprehensive understanding of similarities and differences in IGF-2 signaling between model organisms and humans will be useful for development of more effective medicines targeting IGF-2 receptors.
Collapse
|
32
|
Bedrosian TA, Houtman J, Eguiguren JS, Ghassemzadeh S, Rund N, Novaresi NM, Hu L, Parylak SL, Denli AM, Randolph‐Moore L, Namba T, Gage FH, Toda T. Lamin B1 decline underlies age-related loss of adult hippocampal neurogenesis. EMBO J 2021; 40:e105819. [PMID: 33300615 PMCID: PMC7849303 DOI: 10.15252/embj.2020105819] [Citation(s) in RCA: 29] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2020] [Revised: 10/23/2020] [Accepted: 11/09/2020] [Indexed: 02/03/2023] Open
Abstract
Neurogenesis in the adult hippocampus declines with age, a process that has been implicated in cognitive and emotional impairments. However, the mechanisms underlying this decline have remained elusive. Here, we show that the age-dependent downregulation of lamin B1, one of the nuclear lamins in adult neural stem/progenitor cells (ANSPCs), underlies age-related alterations in adult hippocampal neurogenesis. Our results indicate that higher levels of lamin B1 in ANSPCs safeguard against premature differentiation and regulate the maintenance of ANSPCs. However, the level of lamin B1 in ANSPCs declines during aging. Precocious loss of lamin B1 in ANSPCs transiently promotes neurogenesis but eventually depletes it. Furthermore, the reduction of lamin B1 in ANSPCs recapitulates age-related anxiety-like behavior in mice. Our results indicate that the decline in lamin B1 underlies stem cell aging and impacts the homeostasis of adult neurogenesis and mood regulation.
Collapse
Affiliation(s)
- Tracy A Bedrosian
- Laboratory of GeneticsThe Salk Institute for Biological StudiesLa JollaCAUSA
- Institute for Genomic MedicineNationwide Children's HospitalColumbusOHUSA
| | - Judith Houtman
- Nuclear Architecture in Neural Plasticity and Aging, German Center for Neurodegenerative Diseases (DZNE)DresdenGermany
| | - Juan Sebastian Eguiguren
- Nuclear Architecture in Neural Plasticity and Aging, German Center for Neurodegenerative Diseases (DZNE)DresdenGermany
| | - Saeed Ghassemzadeh
- Laboratory of GeneticsThe Salk Institute for Biological StudiesLa JollaCAUSA
| | - Nicole Rund
- Nuclear Architecture in Neural Plasticity and Aging, German Center for Neurodegenerative Diseases (DZNE)DresdenGermany
| | - Nicole M Novaresi
- Laboratory of GeneticsThe Salk Institute for Biological StudiesLa JollaCAUSA
| | - Lauren Hu
- Laboratory of GeneticsThe Salk Institute for Biological StudiesLa JollaCAUSA
| | - Sarah L. Parylak
- Laboratory of GeneticsThe Salk Institute for Biological StudiesLa JollaCAUSA
| | - Ahmet M Denli
- Laboratory of GeneticsThe Salk Institute for Biological StudiesLa JollaCAUSA
| | | | - Takashi Namba
- Max Planck Institute of Molecular Cell Biology and GeneticsDresdenGermany
- Neuroscience Center, HiLIFE‐Helsinki Institute of Life ScienceUniversity of HelsinkiHelsinkiFinland
| | - Fred H Gage
- Laboratory of GeneticsThe Salk Institute for Biological StudiesLa JollaCAUSA
| | - Tomohisa Toda
- Laboratory of GeneticsThe Salk Institute for Biological StudiesLa JollaCAUSA
- Nuclear Architecture in Neural Plasticity and Aging, German Center for Neurodegenerative Diseases (DZNE)DresdenGermany
- Paul F. Glenn Center for Biology of Aging Research at the Salk InstituteLa JollaCAUSA
| |
Collapse
|
33
|
Guan SZ, Fu YJ, Zhao F, Liu HY, Chen XH, Qi FQ, Liu ZH, Ng TB. The mechanism of enriched environment repairing the learning and memory impairment in offspring of prenatal stress by regulating the expression of activity-regulated cytoskeletal-associated and insulin-like growth factor-2 in hippocampus. Environ Health Prev Med 2021; 26:8. [PMID: 33451279 PMCID: PMC7811238 DOI: 10.1186/s12199-020-00929-7] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2020] [Accepted: 12/27/2020] [Indexed: 01/03/2023] Open
Abstract
Background Prenatal stress can cause neurobiological and behavioral defects in offspring; environmental factors play a crucial role in regulating the development of brain and behavioral; this study was designed to test and verify whether an enriched environment can repair learning and memory impairment in offspring rats induced by prenatal stress and to explore its mechanism involving the expression of insulin-like growth factor-2 (IGF-2) and activity-regulated cytoskeletal-associated protein (Arc) in the hippocampus of the offspring. Methods Rats were selected to establish a chronic unpredictable mild stress (CUMS) model during pregnancy. Offspring were weaned on 21st day and housed under either standard or an enriched environment. The learning and memory ability were tested using Morris water maze and Y-maze. The expression of IGF-2 and Arc mRNA and protein were respectively measured by using RT-PCR and Western blotting. Results There was an elevation in the plasma corticosterone level of rat model of maternal chronic stress during pregnancy. Maternal stress’s offspring exposed to an enriched environment could decrease their plasma corticosterone level and improve their weight. The offspring of maternal stress during pregnancy exhibited abnormalities in Morris water maze and Y-maze, which were improved in an enriched environment. The expression of IGF-2, Arc mRNA, and protein in offspring of maternal stress during pregnancy was boosted and some relationships existed between these parameters after being exposed enriched environment. Conclusions The learning and memory impairment in offspring of prenatal stress can be rectified by the enriched environment, the mechanism of which is related to the decreasing plasma corticosterone and increasing hippocampal IGF-2 and Arc of offspring rats following maternal chronic stress during pregnancy.
Collapse
Affiliation(s)
- Su-Zhen Guan
- School of Public Health and Management, Ningxia Medical University, No.1160, Shengli Street, Xingqing District, Yinchuan, Ningxia, China.,Department of Occupational Health and Environmental Health, College of Public Health, Xinjiang Medical University, Urumqi, 830011, China.,Key Laboratory of Environmental Factors and Chronic Disease Control, No.1160, Shengli Street, Xingqing District, Yinchuan, Ningxia, China
| | - You-Juan Fu
- School of Public Health and Management, Ningxia Medical University, No.1160, Shengli Street, Xingqing District, Yinchuan, Ningxia, China.,Key Laboratory of Environmental Factors and Chronic Disease Control, No.1160, Shengli Street, Xingqing District, Yinchuan, Ningxia, China
| | - Feng Zhao
- School of Public Health and Management, Ningxia Medical University, No.1160, Shengli Street, Xingqing District, Yinchuan, Ningxia, China.,Key Laboratory of Environmental Factors and Chronic Disease Control, No.1160, Shengli Street, Xingqing District, Yinchuan, Ningxia, China
| | - Hong-Ya Liu
- School of Public Health and Management, Ningxia Medical University, No.1160, Shengli Street, Xingqing District, Yinchuan, Ningxia, China.,Key Laboratory of Environmental Factors and Chronic Disease Control, No.1160, Shengli Street, Xingqing District, Yinchuan, Ningxia, China
| | - Xiao-Hui Chen
- School of Public Health and Management, Ningxia Medical University, No.1160, Shengli Street, Xingqing District, Yinchuan, Ningxia, China.,Key Laboratory of Environmental Factors and Chronic Disease Control, No.1160, Shengli Street, Xingqing District, Yinchuan, Ningxia, China
| | - Fa-Qiu Qi
- School of Public Health and Management, Ningxia Medical University, No.1160, Shengli Street, Xingqing District, Yinchuan, Ningxia, China.,Key Laboratory of Environmental Factors and Chronic Disease Control, No.1160, Shengli Street, Xingqing District, Yinchuan, Ningxia, China
| | - Zhi-Hong Liu
- School of Public Health and Management, Ningxia Medical University, No.1160, Shengli Street, Xingqing District, Yinchuan, Ningxia, China. .,Key Laboratory of Environmental Factors and Chronic Disease Control, No.1160, Shengli Street, Xingqing District, Yinchuan, Ningxia, China.
| | - Tzi Bun Ng
- School of Biomedical Sciences, Faculty of Medicine, The Chinese University of Hong Kong, Shatin, Hong Kong.
| |
Collapse
|
34
|
García-Huerta P, Troncoso-Escudero P, Wu D, Thiruvalluvan A, Cisternas-Olmedo M, Henríquez DR, Plate L, Chana-Cuevas P, Saquel C, Thielen P, Longo KA, Geddes BJ, Lederkremer GZ, Sharma N, Shenkman M, Naphade S, Sardi SP, Spichiger C, Richter HG, Court FA, Tshilenge KT, Ellerby LM, Wiseman RL, Gonzalez-Billault C, Bergink S, Vidal RL, Hetz C. Insulin-like growth factor 2 (IGF2) protects against Huntington's disease through the extracellular disposal of protein aggregates. Acta Neuropathol 2020; 140:737-764. [PMID: 32642868 PMCID: PMC8513574 DOI: 10.1007/s00401-020-02183-1] [Citation(s) in RCA: 37] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2020] [Revised: 06/06/2020] [Accepted: 06/19/2020] [Indexed: 12/13/2022]
Abstract
Impaired neuronal proteostasis is a salient feature of many neurodegenerative diseases, highlighting alterations in the function of the endoplasmic reticulum (ER). We previously reported that targeting the transcription factor XBP1, a key mediator of the ER stress response, delays disease progression and reduces protein aggregation in various models of neurodegeneration. To identify disease modifier genes that may explain the neuroprotective effects of XBP1 deficiency, we performed gene expression profiling of brain cortex and striatum of these animals and uncovered insulin-like growth factor 2 (Igf2) as the major upregulated gene. Here, we studied the impact of IGF2 signaling on protein aggregation in models of Huntington's disease (HD) as proof of concept. Cell culture studies revealed that IGF2 treatment decreases the load of intracellular aggregates of mutant huntingtin and a polyglutamine peptide. These results were validated using induced pluripotent stem cells (iPSC)-derived medium spiny neurons from HD patients and spinocerebellar ataxia cases. The reduction in the levels of mutant huntingtin was associated with a decrease in the half-life of the intracellular protein. The decrease in the levels of abnormal protein aggregation triggered by IGF2 was independent of the activity of autophagy and the proteasome pathways, the two main routes for mutant huntingtin clearance. Conversely, IGF2 signaling enhanced the secretion of soluble mutant huntingtin species through exosomes and microvesicles involving changes in actin dynamics. Administration of IGF2 into the brain of HD mice using gene therapy led to a significant decrease in the levels of mutant huntingtin in three different animal models. Moreover, analysis of human postmortem brain tissue and blood samples from HD patients showed a reduction in IGF2 level. This study identifies IGF2 as a relevant factor deregulated in HD, operating as a disease modifier that buffers the accumulation of abnormal protein species.
Collapse
Affiliation(s)
- Paula García-Huerta
- Faculty of Medicine, Biomedical Neuroscience Institute, University of Chile, Santiago, Chile
- Center for Geroscience, Brain Health and Metabolism, Santiago, Chile
- Program of Cellular and Molecular Biology, Institute of Biomedical Sciences, Sector B, Second Floor, Faculty of Medicine, University of Chile, Independencia 1027, P.O. Box 70086, Santiago, Chile
| | - Paulina Troncoso-Escudero
- Faculty of Medicine, Biomedical Neuroscience Institute, University of Chile, Santiago, Chile
- Center for Geroscience, Brain Health and Metabolism, Santiago, Chile
- Program of Cellular and Molecular Biology, Institute of Biomedical Sciences, Sector B, Second Floor, Faculty of Medicine, University of Chile, Independencia 1027, P.O. Box 70086, Santiago, Chile
- Center for Integrative Biology, Faculty of Sciences, University Mayor, Santiago, Chile
| | - Di Wu
- Department of Biomedical Sciences of Cells and Systems, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands
| | - Arun Thiruvalluvan
- Department of Biomedical Sciences of Cells and Systems, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands
| | - Marisol Cisternas-Olmedo
- Faculty of Medicine, Biomedical Neuroscience Institute, University of Chile, Santiago, Chile
- Center for Geroscience, Brain Health and Metabolism, Santiago, Chile
- Center for Integrative Biology, Faculty of Sciences, University Mayor, Santiago, Chile
| | - Daniel R Henríquez
- Center for Geroscience, Brain Health and Metabolism, Santiago, Chile
- Department of Cell Biology, Faculty of Sciences, University of Chile, Santiago, Chile
| | - Lars Plate
- Department of Molecular Medicine, The Scripps Research Institute, La Jolla, CA, USA
| | - Pedro Chana-Cuevas
- Faculty of Medical Sciences, University of Santiago de Chile, Santiago, Chile
| | - Cristian Saquel
- Center for Geroscience, Brain Health and Metabolism, Santiago, Chile
- Center for Integrative Biology, Faculty of Sciences, University Mayor, Santiago, Chile
| | - Peter Thielen
- Department of Immunology and Infectious Diseases, Harvard School of Public Health, Boston, MA, 02115, USA
| | | | | | - Gerardo Z Lederkremer
- Sagol School of Neuroscience, Tel Aviv University, Tel Aviv, Israel
- George Wise Faculty of Life Sciences, School of Molecular Cell Biology and Biotechnology, Tel Aviv University, Tel Aviv, Israel
| | - Neeraj Sharma
- Sagol School of Neuroscience, Tel Aviv University, Tel Aviv, Israel
- George Wise Faculty of Life Sciences, School of Molecular Cell Biology and Biotechnology, Tel Aviv University, Tel Aviv, Israel
| | - Marina Shenkman
- Sagol School of Neuroscience, Tel Aviv University, Tel Aviv, Israel
- George Wise Faculty of Life Sciences, School of Molecular Cell Biology and Biotechnology, Tel Aviv University, Tel Aviv, Israel
| | - Swati Naphade
- Buck Institute for Research on Aging, Novato, CA, 94945, USA
| | - S Pablo Sardi
- Rare and Neurological Diseases Therapeutic Area, Sanofi, 49 New York Avenue, Framingham, MA, 01701, USA
| | - Carlos Spichiger
- Faculty of Sciences, Institute of Biochemistry and Microbiology, University Austral of Chile, Valdivia, Chile
| | - Hans G Richter
- Faculty of Medicine, Institute of Anatomy, Histology and Pathology, University Austral of Chile, Valdivia, Chile
| | - Felipe A Court
- Center for Geroscience, Brain Health and Metabolism, Santiago, Chile
- Center for Integrative Biology, Faculty of Sciences, University Mayor, Santiago, Chile
- Buck Institute for Research on Aging, Novato, CA, 94945, USA
| | | | - Lisa M Ellerby
- Buck Institute for Research on Aging, Novato, CA, 94945, USA
| | - R Luke Wiseman
- Department of Molecular Medicine, The Scripps Research Institute, La Jolla, CA, USA
| | - Christian Gonzalez-Billault
- Center for Geroscience, Brain Health and Metabolism, Santiago, Chile
- Department of Cell Biology, Faculty of Sciences, University of Chile, Santiago, Chile
- Buck Institute for Research on Aging, Novato, CA, 94945, USA
| | - Steven Bergink
- Department of Biomedical Sciences of Cells and Systems, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands
| | - Rene L Vidal
- Faculty of Medicine, Biomedical Neuroscience Institute, University of Chile, Santiago, Chile.
- Center for Geroscience, Brain Health and Metabolism, Santiago, Chile.
- Center for Integrative Biology, Faculty of Sciences, University Mayor, Santiago, Chile.
| | - Claudio Hetz
- Faculty of Medicine, Biomedical Neuroscience Institute, University of Chile, Santiago, Chile.
- Center for Geroscience, Brain Health and Metabolism, Santiago, Chile.
- Program of Cellular and Molecular Biology, Institute of Biomedical Sciences, Sector B, Second Floor, Faculty of Medicine, University of Chile, Independencia 1027, P.O. Box 70086, Santiago, Chile.
- Buck Institute for Research on Aging, Novato, CA, 94945, USA.
| |
Collapse
|
35
|
Understanding IGF-II Action through Insights into Receptor Binding and Activation. Cells 2020; 9:cells9102276. [PMID: 33053840 PMCID: PMC7601145 DOI: 10.3390/cells9102276] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2020] [Revised: 10/07/2020] [Accepted: 10/07/2020] [Indexed: 02/07/2023] Open
Abstract
The insulin-like growth factor (IGF) system regulates metabolic and mitogenic signaling through an intricate network of related receptors and hormones. IGF-II is one of several hormones within this system that primarily regulates mitogenic functions and is especially important during fetal growth and development. IGF-II is also found to be overexpressed in several cancer types, promoting growth and survival. It is also unique in the IGF system as it acts through both IGF-1R and insulin receptor isoform A (IR-A). Despite this, IGF-II is the least investigated ligand of the IGF system. This review will explore recent developments in IGF-II research including a structure of IGF-II bound to IGF-1R determined using cryo-electron microscopy (cryoEM). Comparisons are made with the structures of insulin and IGF-I bound to their cognate receptors. Finally discussed are outstanding questions in the mechanism of action of IGF-II with the goal of developing antagonists of IGF action in cancer.
Collapse
|
36
|
Suzukawa AA, Zanluca C, Jorge NAN, de Noronha L, Koishi AC, de Paula CBV, Rebutini PZ, Nagashima S, Hansel-Frose AFF, Parreira VSC, Bordignon J, MacDonald MR, Rice CM, Passetti F, Duarte Dos Santos CN. Downregulation of IGF2 expression in third trimester placental tissues from Zika virus infected women in Brazil. J Infect 2020; 81:766-775. [PMID: 32987099 DOI: 10.1016/j.jinf.2020.09.028] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2020] [Revised: 09/22/2020] [Accepted: 09/23/2020] [Indexed: 11/30/2022]
Abstract
OBJECTIVES Screening for genes differentially expressed in placental tissues, aiming to identify transcriptional signatures that may be involved in ZIKV congenital pathogenesis. METHODS Transcriptome data from placental tissues of pregnant women naturally infected with Zika virus during the third trimester were compared to those from women who tested negative for Zika infection. The findings were validated using both a cell culture model and an immunohistochemistry/morphological analysis of naturally infected placental tissues. RESULTS Transcriptome analysis revealed that Zika virus infection induces downregulation of insulin-like growth factor II (IGF2) gene, an essential factor for fetal development. The Caco-2 cell culture model that constitutively expresses IGF2 was used for the transcriptome validation. Asiatic and African Zika virus strains infection caused downregulated IGF2 gene expression in Caco-2 cells, whereas other flaviviruses, such as dengue serotype 1, West Nile and wild-type yellow fever viruses, had no effect on this gene expression. Immunohistochemical assays on decidual tissues corroborated our transcriptome analysis, showing that IGF2 is reduced in the decidua of Zika virus-infected women. CONCLUSIONS Our results draw attention to IGF2 modulation in uterine tissues, and this finding is expected to support future studies on strategies to ameliorate the harmful effects of Zika virus infection during pregnancy.
Collapse
Affiliation(s)
- Andréia A Suzukawa
- Laboratório de Virologia Molecular, Instituto Carlos Chagas, Fundação Oswaldo Cruz, Curitiba, PR, Brazil
| | - Camila Zanluca
- Laboratório de Virologia Molecular, Instituto Carlos Chagas, Fundação Oswaldo Cruz, Curitiba, PR, Brazil
| | - Natasha A N Jorge
- Bioinformatics Group, Department of Computer Science, and Interdisciplinary Center for Bioinformatics, D-04107 Leipzig, Germany
| | - Lucia de Noronha
- Laboratório de Patologia Experimental, Pontifícia Universidade Católica do Paraná, Curitiba, PR, Brazil
| | - Andrea C Koishi
- Laboratório de Virologia Molecular, Instituto Carlos Chagas, Fundação Oswaldo Cruz, Curitiba, PR, Brazil
| | - Caroline B V de Paula
- Laboratório de Patologia Experimental, Pontifícia Universidade Católica do Paraná, Curitiba, PR, Brazil
| | - Patrícia Z Rebutini
- Laboratório de Patologia Experimental, Pontifícia Universidade Católica do Paraná, Curitiba, PR, Brazil
| | - Seigo Nagashima
- Laboratório de Patologia Experimental, Pontifícia Universidade Católica do Paraná, Curitiba, PR, Brazil
| | - Aruana F F Hansel-Frose
- Laboratório de Regulação da Expressão Gênica, Instituto Carlos Chagas, Fundação Oswaldo Cruz, Curitiba, PR, Brazil
| | - Vinícius S C Parreira
- Laboratório de Regulação da Expressão Gênica, Instituto Carlos Chagas, Fundação Oswaldo Cruz, Curitiba, PR, Brazil
| | - Juliano Bordignon
- Laboratório de Virologia Molecular, Instituto Carlos Chagas, Fundação Oswaldo Cruz, Curitiba, PR, Brazil
| | - Margaret R MacDonald
- Laboratory of Virology and Infectious Disease, The Rockefeller University, New York, NY 10065, USA
| | - Charles M Rice
- Laboratory of Virology and Infectious Disease, The Rockefeller University, New York, NY 10065, USA
| | - Fabio Passetti
- Laboratório de Regulação da Expressão Gênica, Instituto Carlos Chagas, Fundação Oswaldo Cruz, Curitiba, PR, Brazil.
| | | |
Collapse
|
37
|
Clinical Evidence of Antidepressant Effects of Insulin and Anti-Hyperglycemic Agents and Implications for the Pathophysiology of Depression-A Literature Review. Int J Mol Sci 2020; 21:ijms21186969. [PMID: 32971941 PMCID: PMC7554794 DOI: 10.3390/ijms21186969] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2020] [Revised: 08/21/2020] [Accepted: 09/15/2020] [Indexed: 02/07/2023] Open
Abstract
Close connections between depression and type 2 diabetes (T2DM) have been suggested by many epidemiological and experimental studies. Disturbances in insulin sensitivity due to the disruption of various molecular pathways cause insulin resistance, which underpins many metabolic disorders, including diabetes, as well as depression. Several anti-hyperglycemic agents have demonstrated antidepressant properties in clinical trials, probably due to their action on brain targets based on the shared pathophysiology of depression and T2DM. In this article, we review reports of clinical trials examining the antidepressant effect of these medications, including insulin, metformin, glucagon like peptide-1 receptor agonists (GLP-1RA), and peroxisome proliferator-activated receptor (PPAR)-γ agonists, and briefly consider possible molecular mechanisms underlying the associations between amelioration of insulin resistance and improvement of depressive symptoms. In doing so, we intend to suggest an integrative perspective for understanding the pathophysiology of depression.
Collapse
|
38
|
Mira H, Morante J. Neurogenesis From Embryo to Adult - Lessons From Flies and Mice. Front Cell Dev Biol 2020; 8:533. [PMID: 32695783 PMCID: PMC7339912 DOI: 10.3389/fcell.2020.00533] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2020] [Accepted: 06/08/2020] [Indexed: 12/30/2022] Open
Abstract
The human brain is composed of billions of cells, including neurons and glia, with an undetermined number of subtypes. During the embryonic and early postnatal stages, the vast majority of these cells are generated from neural progenitors and stem cells located in all regions of the neural tube. A smaller number of neurons will continue to be generated throughout our lives, in localized neurogenic zones, mainly confined at least in rodents to the subependymal zone of the lateral ventricles and the subgranular zone of the hippocampal dentate gyrus. During neurogenesis, a combination of extrinsic cues interacting with temporal and regional intrinsic programs are thought to be critical for increasing neuronal diversity, but their underlying mechanisms need further elucidation. In this review, we discuss the recent findings in Drosophila and mammals on the types of cell division and cell interactions used by neural progenitors and stem cells to sustain neurogenesis, and how they are influenced by glia.
Collapse
Affiliation(s)
- Helena Mira
- Instituto de Biomedicina de Valencia, Consejo Superior de Investigaciones Científicas, Valencia, Spain
| | - Javier Morante
- Instituto de Neurociencias, Consejo Superior de Investigaciones Científicas y Universidad Miguel Hernandez, Alicante, Spain
| |
Collapse
|
39
|
An Overview of Nicotinic Cholinergic System Signaling in Neurogenesis. Arch Med Res 2020; 51:287-296. [DOI: 10.1016/j.arcmed.2020.03.014] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2019] [Revised: 03/13/2020] [Accepted: 03/30/2020] [Indexed: 12/19/2022]
|
40
|
Chen Y, Shen J, Ma C, Cao M, Yan J, Liang J, Ke K, Cao M, Xiaosu G. Skin-derived precursor Schwann cells protect SH-SY5Y cells against 6-OHDA-induced neurotoxicity by PI3K/AKT/Bcl-2 pathway. Brain Res Bull 2020; 161:84-93. [PMID: 32360763 DOI: 10.1016/j.brainresbull.2020.03.020] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2019] [Revised: 03/22/2020] [Accepted: 03/31/2020] [Indexed: 02/08/2023]
Abstract
Skin-derived precursors (SKPs) are self-renewing and pluripotent adult stem cell sources that have been successfully obtained and cultured from adult tissues of rodents and humans. Skin-derived precursor Schwann cells (SKP-SCs), derived from SKPs when cultured in a neuro stromal medium supplemented with some appropriate neurotrophic factors, have been reported to play a neuroprotective effect in the peripheral nervous system. This proves our previous studies that SKP-SCs' function to bridge sciatic nerve gap in rats. However, the function of SKP-SCs in Parkinson disease (PD) remains unknown. This study was aimed to investigate the possible neuroprotective effects of SKP-SCs in 6-OHDA-induced Parkinson's disease (PD) model. Our results showed that the treatment with SKP-SCs prevented SH-SY5Y cells from 6-OHDA-induced apoptosis, accompanied by modulation of apoptosis-related proteins (Bcl-2 and Bax) and the decreased expression of active caspase-3. Furthermore, we confirmed that SKP-SCs might exert protective effects and increase the mitochondrial membrane potential (MMP) through PI3K/AKT/Bcl-2 pathway. Taken together, our results demonstrated that SKP-SCs protect against 6-OHDA-induced cytotoxicity through PI3K/AKT/Bcl-2 pathway in PD model in vitro, which provides a new theoretical basis for the treatment of PD.
Collapse
Affiliation(s)
- Ying Chen
- Department of Neurology, Affiliated Hospital of Nantong University, Nantong 226001, China; Research Center of Clinical Medicine, Affiliated Hospital of Nantong University, Nantong 226001, China
| | - Jiabing Shen
- Department of Neurology, Affiliated Hospital of Nantong University, Nantong 226001, China; Research Center of Clinical Medicine, Affiliated Hospital of Nantong University, Nantong 226001, China
| | - Chengxiao Ma
- Department of Neurology, Affiliated Hospital of Nantong University, Nantong 226001, China; Research Center of Clinical Medicine, Affiliated Hospital of Nantong University, Nantong 226001, China
| | - Maosheng Cao
- Department of Neurology, Affiliated Hospital of Nantong University, Nantong 226001, China; Research Center of Clinical Medicine, Affiliated Hospital of Nantong University, Nantong 226001, China
| | - Jianan Yan
- Department of Neurology, Affiliated Hospital of Nantong University, Nantong 226001, China; Research Center of Clinical Medicine, Affiliated Hospital of Nantong University, Nantong 226001, China
| | - Jingjing Liang
- Department of Neurology, Affiliated Hospital of Nantong University, Nantong 226001, China; Research Center of Clinical Medicine, Affiliated Hospital of Nantong University, Nantong 226001, China
| | - Kaifu Ke
- Department of Neurology, Affiliated Hospital of Nantong University, Nantong 226001, China
| | - Maohong Cao
- Department of Neurology, Affiliated Hospital of Nantong University, Nantong 226001, China.
| | - Gu Xiaosu
- Department of Neurology, Affiliated Hospital of Nantong University, Nantong 226001, China.
| |
Collapse
|
41
|
Waking up quiescent neural stem cells: Molecular mechanisms and implications in neurodevelopmental disorders. PLoS Genet 2020; 16:e1008653. [PMID: 32324743 PMCID: PMC7179833 DOI: 10.1371/journal.pgen.1008653] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
Neural stem cells (NSCs) are crucial for development, regeneration, and repair of the nervous system. Most NSCs in mammalian adult brains are quiescent, but in response to extrinsic stimuli, they can exit from quiescence and become reactivated to give rise to new neurons. The delicate balance between NSC quiescence and activation is important for adult neurogenesis and NSC maintenance. However, how NSCs transit between quiescence and activation remains largely elusive. Here, we discuss our current understanding of the molecular mechanisms underlying the reactivation of quiescent NSCs. We review recent advances on signaling pathways originated from the NSC niche and their crosstalk in regulating NSC reactivation. We also highlight new intrinsic paradigms that control NSC reactivation in Drosophila and mammalian systems. We also discuss emerging evidence on modeling human neurodevelopmental disorders using NSCs.
Collapse
|
42
|
Ramírez-Rodríguez GB, Palacios-Cabriales DM, Ortiz-López L, Estrada-Camarena EM, Vega-Rivera NM. Melatonin Modulates Dendrite Maturation and Complexity in the Dorsal- and Ventral- Dentate Gyrus Concomitantly with Its Antidepressant-Like Effect in Male Balb/C Mice. Int J Mol Sci 2020; 21:ijms21051724. [PMID: 32138332 PMCID: PMC7084558 DOI: 10.3390/ijms21051724] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2019] [Revised: 01/17/2020] [Accepted: 01/20/2020] [Indexed: 12/13/2022] Open
Abstract
Adult neurogenesis occurs in the dentate gyrus (DG) of the hippocampus. New neurons help to counteract the effects of stress and several interventions including antidepressant drugs, environmental modifications and internal factors act pro-neurogenic with consequences in the dorsal and ventral DG. Melatonin, the main product synthesized by the pineal gland, induces antidepressant-like effects and modulates several events of the neurogenic process. However, the information related to the capability of melatonin to modulate dendrite maturation and complexity in the dorsal and ventral regions of the DG and their correlation with its antidepressant-like effect is absent. Thus, in this study, we analyzed the impact of melatonin (0, 0.5, 1, 2.5, 5 or 10 mg/kg) administered daily for fourteen days on the number, dendrite complexity and distribution of doublecortin (DCX)-cells in the dorsal-ventral regions of the DG in male Balb/C mice. Doublecortin is a microtubule-associated protein that is expressed during the course of dendritic maturation of newborn neurons. Also, we analyzed the impact of melatonin on despair-like behavior in the forced swim test. We first found a significant increase in the number and higher dendrite complexity, mainly with the doses of 2.5, 5 and 10 mg/kg of melatonin (81%, 122%, 78%). These cells showed more complex dendritic trees in the ventral- and the dorsal- DG. Concomitantly, the doses of 5 and 10 mg/kg of melatonin decreased depressant-like behavior (76%, 82%). Finally, the data corroborate the antidepressant-like effect of melatonin and the increasing number of doublecortin-associated cells. Besides, the data indicate that melatonin favors the number and dendrite complexity of DCX-cells in the dorsal- and ventral- region of the DG, which may explain part of the antidepressant-like effect of melatonin.
Collapse
Affiliation(s)
- Gerardo Bernabé Ramírez-Rodríguez
- Laboratory of Neurogenesis, Division of Clinical Investigations, National Institute of Psychiatry “Ramón de la Fuente Muñiz”, Calzada Mexico-Xochimilco No. 101, Mexico City C.P. 14370, Mexico; (D.M.P.-C.); (L.O.-L.)
- Correspondence: (G.B.R.-R.); (N.M.V.-R.)
| | - Diana Montserrat Palacios-Cabriales
- Laboratory of Neurogenesis, Division of Clinical Investigations, National Institute of Psychiatry “Ramón de la Fuente Muñiz”, Calzada Mexico-Xochimilco No. 101, Mexico City C.P. 14370, Mexico; (D.M.P.-C.); (L.O.-L.)
| | - Leonardo Ortiz-López
- Laboratory of Neurogenesis, Division of Clinical Investigations, National Institute of Psychiatry “Ramón de la Fuente Muñiz”, Calzada Mexico-Xochimilco No. 101, Mexico City C.P. 14370, Mexico; (D.M.P.-C.); (L.O.-L.)
| | - Erika Montserrat Estrada-Camarena
- Laboratory of Neuropsychopharmacology, Division of Neurosciences, National Institute of Psychiatry “Ramón de la Fuente Muñiz”, Calzada Mexico-Xochimilco No. 101, Mexico City C.P. 14370, Mexico;
| | - Nelly Maritza Vega-Rivera
- Laboratory of Neuropsychopharmacology, Division of Neurosciences, National Institute of Psychiatry “Ramón de la Fuente Muñiz”, Calzada Mexico-Xochimilco No. 101, Mexico City C.P. 14370, Mexico;
- Correspondence: (G.B.R.-R.); (N.M.V.-R.)
| |
Collapse
|
43
|
Keshavarzi M, Khoshnoud MJ, Ghaffarian Bahraman A, Mohammadi-Bardbori A. An Endogenous Ligand of Aryl Hydrocarbon Receptor 6-Formylindolo[3,2-b]Carbazole (FICZ) Is a Signaling Molecule in Neurogenesis of Adult Hippocampal Neurons. J Mol Neurosci 2020; 70:806-817. [DOI: 10.1007/s12031-020-01506-x] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2019] [Accepted: 02/05/2020] [Indexed: 01/08/2023]
|
44
|
Salarinasab S, Salimi L, Alidadiani N, Shokrollahi E, Arzhanga P, Karbasforush S, Marofi F, Nasirzadeh M, Rahbarghazi R, Nourazarian A, Nikanfar M. Interaction of opioid with insulin/IGFs signaling in Alzheimer's disease. J Mol Neurosci 2020; 70:819-834. [PMID: 32026387 DOI: 10.1007/s12031-020-01478-y] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2018] [Accepted: 01/09/2020] [Indexed: 12/21/2022]
Abstract
Alzheimer's disease is associated with biochemical and histopathological changes characterized by molecular abnormalities. Due to the lack of effective treatments for Alzheimer's disease, many attempts have been made to find potential therapies to reduce or even return neuronal loss after disease initiation. Alzheimer's disease is also touted as type III diabetes, showing an association with insulin signaling. The large distribution of the insulin receptor on the cell surface and its regulatory role in the central nervous system suggests that the pathogenesis of Alzheimer's disease could be ascribed to insulin signaling. The interference of opioids, such as morphine with insulin signaling pathways, is thought to occur via direct crosstalk between the signaling pathways of the insulin receptor and the mu-opioid receptor. In this review article, we discuss the possible crosstalk between the mu-opioid receptor and insulin signaling pathways. The association of these two signaling pathways with Alzheimer's disease is also debated.
Collapse
Affiliation(s)
- Sadegh Salarinasab
- Neuroscience Research Center, Institute of Neuropharmacology, Kerman University of Medical Science, Kerman, Iran
| | - Leila Salimi
- Stem Cell Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Neda Alidadiani
- Department of Cardiac Surgery, Friedrich-Alexander-University Erlangen-Nürnberg, Krankenhausstr. 12, 91054, Erlangen, Germany
| | - Elhameh Shokrollahi
- Neuroscience Research Center, Institute of Neuropharmacology, Kerman University of Medical Science, Kerman, Iran
| | - Pishva Arzhanga
- Department of Biochemistry and Diet Therapy, Faculty of Nutrition and Food Sciences, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Saedeh Karbasforush
- Neuroscience Research Center, Institute of Neuropharmacology, Kerman University of Medical Science, Kerman, Iran
| | - Faroogh Marofi
- Department of Hematology, Faculty of Medicine, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Mahdieh Nasirzadeh
- Department of Biochemistry, Faculty of Medicine, Urmia University of Medical Sciences, Urmia, Iran
| | - Reza Rahbarghazi
- Stem Cell Research Center, Tabriz University of Medical Sciences, Tabriz, Iran.
- Drug Applied Research Center, Tabriz University of Medical Sciences, Tabriz, Iran.
- Department of Applied Cell Sciences, Faculty of Advanced Medical Sciences, Tabriz University of Medical Sciences, Imam Reza St, Golgasht St, Tabriz, 51666-14756, Iran.
| | - Alireza Nourazarian
- Neuroscience Research Center, Institute of Neuropharmacology, Kerman University of Medical Science, Kerman, Iran.
- Department of Biochemistry and Clinical Laboratories, Faculty of Medicine, Tabriz University of Medical Sciences, Golgasht St, Tabriz, 51666-16471, Iran.
| | - Masoud Nikanfar
- Department of Neurology, Faculty of Medicine, Tabriz University of Medical Sciences, Tabriz, Iran
| |
Collapse
|
45
|
Grossert A, Mehrjardi NZ, Bailey SJ, Lindsay MA, Hescheler J, Šarić T, Teusch N. Ketamine Increases Proliferation of Human iPSC-Derived Neuronal Progenitor Cells via Insulin-Like Growth Factor 2 and Independent of the NMDA Receptor. Cells 2019; 8:cells8101139. [PMID: 31554266 PMCID: PMC6830315 DOI: 10.3390/cells8101139] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2019] [Revised: 09/19/2019] [Accepted: 09/20/2019] [Indexed: 12/22/2022] Open
Abstract
The N-methyl-D-aspartate (NMDA) receptor antagonist ketamine offers promising perspectives for the treatment of major depressive disorder. Although ketamine demonstrates rapid and long-lasting effects, even in treatment-resistant patients, to date, the underlying mode of action remains elusive. Thus, the aim of our study was to investigate the molecular mechanism of ketamine at clinically relevant concentrations by establishing an in vitro model based on human induced pluripotent stem cells (iPSCs)-derived neural progenitor cells (NPCs). Notably, ketamine increased the proliferation of NPCs independent of the NMDA receptor, while transcriptome analysis revealed significant upregulation of insulin-like growth factor 2 (IGF2) and p11, a member of the S100 EF-hand protein family, which are both implicated in the pathophysiology of depression, 24 h after ketamine treatment. Ketamine (1 µM) was able to increase cyclic adenosine monophosphate (cAMP) signaling in NPCs within 15 min and cell proliferation, while ketamine-induced IGF2 expression was reduced after PKA inhibition with cAMPS-Rp. Furthermore, 24 h post-administration of ketamine (15 mg/kg) in vivo confirmed phosphorylation of extracellular signal-regulated protein kinases 1 and 2 (ERK1/2) in the subgranular zone (SGZ) of the hippocampus in C57BL/6 mice. In conclusion, ketamine promotes the proliferation of NPCs presumably by involving cAMP-IGF2 signaling.
Collapse
Affiliation(s)
- Alessandra Grossert
- Bio-Pharmaceutical Chemistry and Molecular Pharmacology, Faculty of Applied Natural Sciences, Technische Hochschule Köln, 51373 Leverkusen, Germany.
| | - Narges Zare Mehrjardi
- Center for Physiology and Pathophysiology, Institute for Neurophysiology, Medical Faculty, University of Cologne, 50931 Cologne, Germany.
| | - Sarah J Bailey
- Department of Pharmacy and Pharmacology, University of Bath, Bath BA2 7AY, UK.
| | - Mark A Lindsay
- Department of Pharmacy and Pharmacology, University of Bath, Bath BA2 7AY, UK.
| | - Jürgen Hescheler
- Center for Physiology and Pathophysiology, Institute for Neurophysiology, Medical Faculty, University of Cologne, 50931 Cologne, Germany.
| | - Tomo Šarić
- Center for Physiology and Pathophysiology, Institute for Neurophysiology, Medical Faculty, University of Cologne, 50931 Cologne, Germany.
| | - Nicole Teusch
- Bio-Pharmaceutical Chemistry and Molecular Pharmacology, Faculty of Applied Natural Sciences, Technische Hochschule Köln, 51373 Leverkusen, Germany.
- Department of Biomedical Sciences, Faculty of Human Sciences, University of Osnabrück, 49076 Osnabrück, Germany.
| |
Collapse
|
46
|
RBM3 promotes neurogenesis in a niche-dependent manner via IMP2-IGF2 signaling pathway after hypoxic-ischemic brain injury. Nat Commun 2019; 10:3983. [PMID: 31484925 PMCID: PMC6726629 DOI: 10.1038/s41467-019-11870-x] [Citation(s) in RCA: 49] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2018] [Accepted: 08/01/2019] [Indexed: 12/11/2022] Open
Abstract
Hypoxic ischemia (HI) is an acute brain threat across all age groups. Therapeutic hypothermia ameliorates resulting injury in neonates but its side effects prevent routine use in adults. Hypothermia up-regulates a small protein subset that includes RNA-binding motif protein 3 (RBM3), which is neuroprotective under stressful conditions. Here we show how RBM3 stimulates neuronal differentiation and inhibits HI-induced apoptosis in the two areas of persistent adult neurogenesis, the subventricular zone (SVZ) and the subgranular zone (SGZ), while promoting neural stem/progenitor cell (NSPC) proliferation after HI injury only in the SGZ. RBM3 interacts with IGF2 mRNA binding protein 2 (IMP2), elevates its expression and thereby stimulates IGF2 release in SGZ but not SVZ-NSPCs. In summary, we describe niche-dependent regulation of neurogenesis after adult HI injury via the novel RBM3-IMP2-IGF2 signaling pathway. Therapeutic hypothermia is a potent tool in the treatment of neonatal hypoxic-ischemic (HI) injury, yet the underlying mechanisms remain unclear. Here, authors demonstrate how the RNA-binding motif protein RBM3, which is induced by mild cooling while global translation rate is slowed down, contributes substantially to neuroregeneration after adult HI injury, specifically in the subventricular zone and subgranular zone.
Collapse
|
47
|
Reduced Hippocampal Neurogenesis in Mice Deficient in Apoptosis Repressor with Caspase Recruitment Domain (ARC). Neuroscience 2019; 416:20-29. [PMID: 31356897 DOI: 10.1016/j.neuroscience.2019.07.032] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2018] [Revised: 07/14/2019] [Accepted: 07/18/2019] [Indexed: 01/17/2023]
Abstract
In the adult hippocampal dentate gyrus (DG), the majority of newly generated cells are eliminated by apoptotic mechanisms. The apoptosis repressor with caspase recruitment domain (ARC), encoded by the Nol3 gene, is a potent and multifunctional death repressor that inhibits both death receptor and mitochondrial apoptotic signaling. The aim of the present study was to parse the role of ARC in the development of new granule cell neurons. Nol3 gene expression as revealed by in situ hybridization is present in the entire dentate granule cell layer. Moreover, a comparison of Nol3 expression between FACS-sorted Sox2-positive neural stem cells and Doublecortin (DCX)-positive immature neurons demonstrates upregulation of Nol3 during neurogenesis. Using ARC-deficient mice, we show that proliferation and survival of BrdU birth-dated cells are strongly reduced in the absence of ARC while neuronal-glial fate choice is not affected. Both the number of DCX-positive cells and the number of calretinin (CR)-positive immature postmitotic neurons are reduced in the hippocampus of ARC-/- mice. ARC knockout is not associated with increased numbers of microglia or with microglia activation. However, hippocampal brain-derived neurotrophic factor (BDNF) protein content is significantly increased in ARC-/- mice, possibly representing a compensatory response. Collectively, our results suggest that ARC plays a critical cell-autonomous role in preventing cell death during adult granule cell neogenesis.
Collapse
|
48
|
Zhang H, Sathyamurthy A, Liu F, Li L, Zhang L, Dong Z, Cui W, Sun X, Zhao K, Wang H, Ho HYH, Xiong WC, Mei L. Agrin-Lrp4-Ror2 signaling regulates adult hippocampal neurogenesis in mice. eLife 2019; 8:e45303. [PMID: 31268420 PMCID: PMC6650252 DOI: 10.7554/elife.45303] [Citation(s) in RCA: 34] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2019] [Accepted: 07/02/2019] [Indexed: 12/12/2022] Open
Abstract
Adult neurogenesis in the hippocampus may represent a form of plasticity in brain functions including mood, learning and memory. However, mechanisms underlying neural stem/progenitor cells (NSPCs) proliferation are not well understood. We found that Agrin, a factor critical for neuromuscular junction formation, is elevated in the hippocampus of mice that are stimulated by enriched environment (EE). Genetic deletion of the Agrn gene in excitatory neurons decreases NSPCs proliferation and increases depressive-like behavior. Low-density lipoprotein receptor-related protein 4 (Lrp4), a receptor for Agrin, is expressed in hippocampal NSPCs and its mutation blocked basal as well as EE-induced NSPCs proliferation and maturation of newborn neurons. Finally, we show that Lrp4 interacts with and activates receptor tyrosine kinase-like orphan receptor 2 (Ror2); and Ror2 mutation impairs NSPCs proliferation. Together, these observations identify a role of Agrin-Lrp4-Ror2 signaling for adult neurogenesis, uncovering previously unexpected functions of Agrin and Lrp4 in the brain.
Collapse
Affiliation(s)
- Hongsheng Zhang
- Department of Neurosciences, School of MedicineCase Western Reserve UniversityClevelandUnited States
| | - Anupama Sathyamurthy
- Department of Neuroscience and Regenerative Medicine, Medical College of GeorgiaAugusta UniversityAugustaUnited States
| | - Fang Liu
- Department of Neuroscience and Regenerative Medicine, Medical College of GeorgiaAugusta UniversityAugustaUnited States
| | - Lei Li
- Department of Neurosciences, School of MedicineCase Western Reserve UniversityClevelandUnited States
| | - Lei Zhang
- Department of Neurosciences, School of MedicineCase Western Reserve UniversityClevelandUnited States
| | - Zhaoqi Dong
- Department of Neurosciences, School of MedicineCase Western Reserve UniversityClevelandUnited States
| | - Wanpeng Cui
- Department of Neurosciences, School of MedicineCase Western Reserve UniversityClevelandUnited States
| | - Xiangdong Sun
- Department of Neuroscience and Regenerative Medicine, Medical College of GeorgiaAugusta UniversityAugustaUnited States
| | - Kai Zhao
- Department of Neuroscience and Regenerative Medicine, Medical College of GeorgiaAugusta UniversityAugustaUnited States
| | - Hongsheng Wang
- Department of Neurosciences, School of MedicineCase Western Reserve UniversityClevelandUnited States
| | - Hsin-Yi Henry Ho
- Department of NeurobiologyHarvard Medical SchoolBostonUnited States
| | - Wen-Cheng Xiong
- Department of Neurosciences, School of MedicineCase Western Reserve UniversityClevelandUnited States
- Department of Neuroscience and Regenerative Medicine, Medical College of GeorgiaAugusta UniversityAugustaUnited States
- Louis Stokes Cleveland Veterans Affairs Medical CenterClevelandUnited States
| | - Lin Mei
- Department of Neurosciences, School of MedicineCase Western Reserve UniversityClevelandUnited States
- Department of Neuroscience and Regenerative Medicine, Medical College of GeorgiaAugusta UniversityAugustaUnited States
- Louis Stokes Cleveland Veterans Affairs Medical CenterClevelandUnited States
| |
Collapse
|
49
|
Masubuchi Y, Tanaka T, Okada R, Ito Y, Nakahara J, Kikuchi S, Watanabe Y, Yoshida T, Maronpot RR, Koyanagi M, Hayashi SM, Shibutani M. Lack of preventive effect of maternal exposure to α-glycosyl isoquercitrin and α-lipoic acid on developmental hypothyroidism-induced aberrations of hippocampal neurogenesis in rat offspring. J Toxicol Pathol 2019; 32:165-180. [PMID: 31404398 PMCID: PMC6682556 DOI: 10.1293/tox.2019-0018] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2019] [Accepted: 04/11/2019] [Indexed: 11/19/2022] Open
Abstract
Hypothyroidism during the developmental stage induces disruption of hippocampal neurogenesis in later life, as well as inducing oxidative stress in the brain. The present study investigated the preventive effect of co-exposure to an antioxidant on disruptive neurogenesis induced by developmental exposure to anti-thyroid agent in rats. For this purpose, we used two antioxidants, α-glycosyl isoquercitrin (AGIQ) and α-lipoic acid (ALA). Mated female Sprague Dawley rats were either untreated (control) or treated with 12 ppm 6-propyl-2-thiouracil (PTU), an anti-thyroid agent, in drinking water from gestational day 6 to postnatal day (PND) 21, the latter group being subjected to feeding basal diet alone or diet containing AGIQ at 5,000 ppm or ALA at 2,000 ppm during PTU exposure. On PND 21, PTU-exposed offspring showed reductions in a broad range of granule cell lineage subpopulations and a change in the number of GABAergic interneuron subpopulations. Co-exposure of AGIQ or ALA with PTU altered the transcript levels of many genes across multiple functions, suggestive of enhancement of synaptic plasticity and neurogenesis. Nevertheless, immunohistochemical results did not support these changes. PTU exposure and co-exposure of AGIQ or ALA with PTU did not alter the hippocampal lipid peroxidation level. The obtained results suggest a possibility that thyroid hormone depletion itself primarily disrupts neurogenesis and that oxidative stress may not be involved in the disruption during development. Transcript expression changes of many genes caused by antioxidants may be the result of neuroprotective actions of antioxidants rather than their antioxidant activity. However, no preventive effect on neurogenesis suggested impairment of protein synthesis via an effect on mRNA translation due to hypothyroidism.
Collapse
Affiliation(s)
- Yasunori Masubuchi
- Laboratory of Veterinary Pathology, Tokyo University of Agriculture and Technology, 3-5-8 Saiwai-cho, Fuchu-shi, Tokyo 183-8509, Japan.,Pathogenetic Veterinary Science, United Graduate School of Veterinary Sciences, Gifu University, 1-1 Yanagido, Gifu-shi, Gifu 501-1193, Japan
| | - Takaharu Tanaka
- Laboratory of Veterinary Pathology, Tokyo University of Agriculture and Technology, 3-5-8 Saiwai-cho, Fuchu-shi, Tokyo 183-8509, Japan
| | - Rena Okada
- Laboratory of Veterinary Pathology, Tokyo University of Agriculture and Technology, 3-5-8 Saiwai-cho, Fuchu-shi, Tokyo 183-8509, Japan
| | - Yuko Ito
- Laboratory of Veterinary Pathology, Tokyo University of Agriculture and Technology, 3-5-8 Saiwai-cho, Fuchu-shi, Tokyo 183-8509, Japan.,Pathogenetic Veterinary Science, United Graduate School of Veterinary Sciences, Gifu University, 1-1 Yanagido, Gifu-shi, Gifu 501-1193, Japan
| | - Junta Nakahara
- Laboratory of Veterinary Pathology, Tokyo University of Agriculture and Technology, 3-5-8 Saiwai-cho, Fuchu-shi, Tokyo 183-8509, Japan
| | - Satomi Kikuchi
- Laboratory of Veterinary Pathology, Tokyo University of Agriculture and Technology, 3-5-8 Saiwai-cho, Fuchu-shi, Tokyo 183-8509, Japan.,Cooperative Division of Veterinary Sciences, Graduate School of Agriculture, Tokyo University of Agriculture and Technology, 3-5-8 Saiwai-cho, Fuchu-shi, Tokyo 183-8509, Japan
| | - Yousuke Watanabe
- Laboratory of Veterinary Pathology, Tokyo University of Agriculture and Technology, 3-5-8 Saiwai-cho, Fuchu-shi, Tokyo 183-8509, Japan.,Pathogenetic Veterinary Science, United Graduate School of Veterinary Sciences, Gifu University, 1-1 Yanagido, Gifu-shi, Gifu 501-1193, Japan
| | - Toshinori Yoshida
- Laboratory of Veterinary Pathology, Tokyo University of Agriculture and Technology, 3-5-8 Saiwai-cho, Fuchu-shi, Tokyo 183-8509, Japan.,Cooperative Division of Veterinary Sciences, Graduate School of Agriculture, Tokyo University of Agriculture and Technology, 3-5-8 Saiwai-cho, Fuchu-shi, Tokyo 183-8509, Japan
| | - Robert R Maronpot
- Maronpot Consulting, LLC, 1612 Medfield Road, Raleigh, North Carolina 27607, USA
| | - Mihoko Koyanagi
- Global Scientific and Regulatory Affairs, San-Ei Gen F.F.I., Inc., 1-1-11 Sanwa-cho, Toyonaka-shi, Osaka 561-8588, Japan
| | - Shim-Mo Hayashi
- Global Scientific and Regulatory Affairs, San-Ei Gen F.F.I., Inc., 1-1-11 Sanwa-cho, Toyonaka-shi, Osaka 561-8588, Japan
| | - Makoto Shibutani
- Laboratory of Veterinary Pathology, Tokyo University of Agriculture and Technology, 3-5-8 Saiwai-cho, Fuchu-shi, Tokyo 183-8509, Japan.,Cooperative Division of Veterinary Sciences, Graduate School of Agriculture, Tokyo University of Agriculture and Technology, 3-5-8 Saiwai-cho, Fuchu-shi, Tokyo 183-8509, Japan.,Institute of Global Innovation Research, Tokyo University of Agriculture and Technology, 3-5-8 Saiwai-cho, Fuchu-shi, Tokyo 183-8509, Japan
| |
Collapse
|
50
|
Baumann V, Wiesbeck M, Breunig CT, Braun JM, Köferle A, Ninkovic J, Götz M, Stricker SH. Targeted removal of epigenetic barriers during transcriptional reprogramming. Nat Commun 2019; 10:2119. [PMID: 31073172 PMCID: PMC6509258 DOI: 10.1038/s41467-019-10146-8] [Citation(s) in RCA: 47] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2018] [Accepted: 04/23/2019] [Indexed: 02/07/2023] Open
Abstract
Master transcription factors have the ability to direct and reverse cellular identities, and consequently their genes must be subject to particular transcriptional control. However, it is unclear which molecular processes are responsible for impeding their activation and safeguarding cellular identities. Here we show that the targeting of dCas9-VP64 to the promoter of the master transcription factor Sox1 results in strong transcript and protein up-regulation in neural progenitor cells (NPCs). This gene activation restores lost neuronal differentiation potential, which substantiates the role of Sox1 as a master transcription factor. However, despite efficient transactivator binding, major proportions of progenitor cells are unresponsive to the transactivating stimulus. By combining the transactivation domain with epigenome editing we find that among a series of euchromatic processes, the removal of DNA methylation (by dCas9-Tet1) has the highest potential to increase the proportion of cells activating foreign master transcription factors and thus breaking down cell identity barriers.
Collapse
Affiliation(s)
- Valentin Baumann
- MCN Junior Research Group, Munich Center for Neurosciences, Ludwig-Maximilian-Universitaet, BioMedical Center, Grosshaderner Strasse 9, 82152, Planegg-Martinsried, Germany
- Graduate School of Systemic Neurosciences, Ludwig-Maximilians-University, 82152, Planegg-Martinsried, Germany
| | - Maximilian Wiesbeck
- MCN Junior Research Group, Munich Center for Neurosciences, Ludwig-Maximilian-Universitaet, BioMedical Center, Grosshaderner Strasse 9, 82152, Planegg-Martinsried, Germany
| | - Christopher T Breunig
- MCN Junior Research Group, Munich Center for Neurosciences, Ludwig-Maximilian-Universitaet, BioMedical Center, Grosshaderner Strasse 9, 82152, Planegg-Martinsried, Germany
| | - Julia M Braun
- MCN Junior Research Group, Munich Center for Neurosciences, Ludwig-Maximilian-Universitaet, BioMedical Center, Grosshaderner Strasse 9, 82152, Planegg-Martinsried, Germany
| | - Anna Köferle
- MCN Junior Research Group, Munich Center for Neurosciences, Ludwig-Maximilian-Universitaet, BioMedical Center, Grosshaderner Strasse 9, 82152, Planegg-Martinsried, Germany
| | - Jovica Ninkovic
- Neurogenesis and Regeneration, Institute of Stem Cell Research, Helmholtz Zentrum, German Research Center for Environmental Health, Grosshaderner Strasse 9, 82152, Planegg-Martinsried, Germany
- BioMedizinisches Centrum, Ludwig-Maximilian-Universität, Großhaderner Str. 9, 82152, Planegg-Martinsried, Germany
| | - Magdalena Götz
- BioMedizinisches Centrum, Ludwig-Maximilian-Universität, Großhaderner Str. 9, 82152, Planegg-Martinsried, Germany
- Institute of Stem Cell Research, Helmholtz Zentrum, German Research Center for Environmental Health, Grosshaderner Strasse 9, 82152, Planegg-Martinsried, Germany
| | - Stefan H Stricker
- MCN Junior Research Group, Munich Center for Neurosciences, Ludwig-Maximilian-Universitaet, BioMedical Center, Grosshaderner Strasse 9, 82152, Planegg-Martinsried, Germany.
- BioMedizinisches Centrum, Ludwig-Maximilian-Universität, Großhaderner Str. 9, 82152, Planegg-Martinsried, Germany.
- Epigenetic Engineering, Institute of Stem Cell Research, Helmholtz Zentrum, German Research Center for Environmental Health, Grosshaderner Strasse 9, Planegg-Martinsried, 82152, Germany.
| |
Collapse
|