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https://www.readbyqxmd.com/read/27922061/thermo-sensitive-hydrogels-combined-with-decellularised-matrix-deliver-bfgf-for-the-functional-recovery-of-rats-after-a-spinal-cord-injury
#1
He-Lin Xu, Fu-Rong Tian, Cui-Tao Lu, Jie Xu, Zi-Liang Fan, Jing-Jing Yang, Pian-Pian Chen, Ya-Dong Huang, Jian Xiao, Ying-Zheng Zhao
Because of the short half-life, either systemic or local administration of bFGF shows significant drawbacks to spinal injury. In this study, an acellular spinal cord scaffold (ASC) was encapsulated in a thermo-sensitive hydrogel to overcome these limitations. The ASC was firstly prepared from the spinal cord of healthy rats and characterized by scanning electronic microscopy and immunohistochemical staining. bFGF could specifically complex with the ASC scaffold via electrostatic or receptor-mediated interactions...
December 6, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27921242/human-mesenchymal-stem-cells-from-adipose-tissue-differentiated-into-neuronal-or-glial-phenotype-express-different-aquaporins
#2
Rosanna Avola, Adriana Carol Eleonora Graziano, Giovanna Pannuzzo, Venera Cardile
Aquaporins (AQPs) are 13 integral membrane proteins that provide selective pores for the rapid movement of water and other uncharged solutes, across cell membranes. Recently, AQPs have been focused for their role in production, circulation, and homeostasis of the cerebrospinal fluid and their importance in several human diseases is becoming clear. This study investigated the time course (0, 14, and 28 days) of AQP1, 4, 7, 8, and 9 during the neural differentiation of human mesenchymal stem cells (MSCs) from adipose tissue (AT)...
December 5, 2016: Molecular Neurobiology
https://www.readbyqxmd.com/read/27920882/paroxetine-can-enhance-neurogenesis-during-neurogenic-differentiation-of-human-adipose-derived-stem-cells
#3
Maliheh Jahromi, Shahnaz Razavi, Nushin Amirpour, Zahra Khosravizadeh
BACKGROUND: Some antidepressant drugs can promote neuronal cell proliferation in vitro as well as hippocampal neurogenesis in human and animal models. Furthermore, adipose tissue is an available source of adult stem cells with the ability to differentiate in to multiple lineages. Therefore, human Adipose-Derived Stem Cells (hAD-SCs) may be a suitable source for regenerative medical applications. Since there is no evidence for the effect of Paroxetine as the most commonly prescribed antidepressant drug for neurogenic potential of hADSCs, an attempt was made to determine the effect of Paroxetine on proliferation and neural differentiation of hADSCs...
October 2016: Avicenna Journal of Medical Biotechnology
https://www.readbyqxmd.com/read/27920532/the-effect-of-magnetic-nanoparticles-on-neuronal-differentiation-of-induced-pluripotent-stem-cell-derived-neural-precursors
#4
Klára Jiráková, Monika Šeneklová, Daniel Jirák, Karolína Turnovcová, Magda Vosmanská, Michal Babič, Daniel Horák, Pavel Veverka, Pavla Jendelová
INTRODUCTION: Magnetic resonance (MR) imaging is suitable for noninvasive long-term tracking. We labeled human induced pluripotent stem cell-derived neural precursors (iPSC-NPs) with two types of iron-based nanoparticles, silica-coated cobalt zinc ferrite nanoparticles (CZF) and poly-l-lysine-coated iron oxide superparamagnetic nanoparticles (PLL-coated γ-Fe2O3) and studied their effect on proliferation and neuronal differentiation. MATERIALS AND METHODS: We investigated the effect of these two contrast agents on neural precursor cell proliferation and differentiation capability...
2016: International Journal of Nanomedicine
https://www.readbyqxmd.com/read/27920144/methyl-cpg-binding-protein-mbd1-regulates-neuronal-lineage-commitment-through-maintaining-adult-neural-stem-cell-identity
#5
Emily M Jobe, Yu Gao, Brian E Eisinger, Janessa K Mladucky, Charles C Giuliani, Laurel E Kelnhofer, Xinyu Zhao
: MBD1 belongs to a family of methyl-CpG binding proteins that are epigenetic "readers", linking DNA methylation to transcriptional regulation. MBD1 is expressed in neural stem cells residing in the dentate gyrus of the adult hippocampus (aNSCs), and MBD1 deficiency leads to reduced neuronal differentiation, impaired neurogenesis, learning deficits, and autism-like behaviors in mice; however the precise function of MBD1 in aNSCs remains unexplored. Here, we show that MBD1 is important for maintaining the integrity and stemness of NSCs, which is critical for their ability to generate neurons...
December 5, 2016: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
https://www.readbyqxmd.com/read/27919332/effects-of-ionizing-radiation-on-the-mammalian-brain
#6
Daniela Hladik, Soile Tapio
Epidemiological studies on the atomic-bomb survivors, cancer survivors and occupational cohorts provide strong evidence for multifaceted damage to brain after ionizing radiation. Radiation-induced late effects may manifest as brain tumors or cognitive impairment. Decreased neurogenesis and differentiation, alteration in neural structure and synaptic plasticity as well as increased oxidative stress and inflammation are suggested to contribute to adverse effects in the brain. In addition to neural stems cells, several brain-specific mature cell types including endothelial and glial cells are negatively affected by ionizing radiation...
October 2016: Mutation Research
https://www.readbyqxmd.com/read/27917881/distinct-and-shared-determinants-of-cardiomyocyte-contractility-in-multi-lineage-competent-ethnically-diverse-human-ipscs
#7
Martin L Tomov, Zachary T Olmsted, Haluk Dogan, Eda Gongorurler, Maria Tsompana, Hasan H Otu, Michael Buck, Eun-Ah Chang, Jose Cibelli, Janet L Paluh
The realization of personalized medicine through human induced pluripotent stem cell (iPSC) technology can be advanced by transcriptomics, epigenomics, and bioinformatics that inform on genetic pathways directing tissue development and function. When possible, population diversity should be included in new studies as resources become available. Previously we derived replicate iPSC lines of African American, Hispanic-Latino and Asian self-designated ethnically diverse (ED) origins with normal karyotype, verified teratoma formation, pluripotency biomarkers, and tri-lineage in vitro commitment...
December 5, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27916837/chloroquine-an-endocytosis-blocking-agent-inhibits-zika-virus-infection-in-different-cell-models
#8
Rodrigo Delvecchio, Luiza M Higa, Paula Pezzuto, Ana Luiza Valadão, Patrícia P Garcez, Fábio L Monteiro, Erick C Loiola, André A Dias, Fábio J M Silva, Matthew T Aliota, Elizabeth A Caine, Jorge E Osorio, Maria Bellio, David H O'Connor, Stevens Rehen, Renato Santana de Aguiar, Andrea Savarino, Loraine Campanati, Amilcar Tanuri
Zika virus (ZIKV) infection in utero might lead to microcephaly and other congenital defects. Since no specific therapy is available thus far, there is an urgent need for the discovery of agents capable of inhibiting its viral replication and deleterious effects. Chloroquine is widely used as an antimalarial drug, anti-inflammatory agent, and it also shows antiviral activity against several viruses. Here we show that chloroquine exhibits antiviral activity against ZIKV in Vero cells, human brain microvascular endothelial cells, human neural stem cells, and mouse neurospheres...
November 29, 2016: Viruses
https://www.readbyqxmd.com/read/27916527/dynamic-mrna-transport-and-local-translation-in-radial-glial-progenitors-of-the-developing-brain
#9
Louis-Jan Pilaz, Ashley L Lennox, Jeremy P Rouanet, Debra L Silver
In the developing brain, neurons are produced from neural stem cells termed radial glia [1, 2]. Radial glial progenitors span the neuroepithelium, extending long basal processes to form endfeet hundreds of micrometers away from the soma. Basal structures influence neuronal migration, tissue integrity, and proliferation [3-7]. Yet, despite the significance of these distal structures, their cell biology remains poorly characterized, impeding our understanding of how basal processes and endfeet influence neurogenesis...
November 30, 2016: Current Biology: CB
https://www.readbyqxmd.com/read/27916472/generation-of-neural-cells-using-ipscs-from-sleep-bruxism-patients-with-5-ht2a-polymorphism
#10
Yurie Hoashi, Satoshi Okamoto, Yuka Abe, Takashi Matsumoto, Junichi Tanaka, Yuya Yoshida, Kent Imaizumi, Kenji Mishima, Wado Akamatsu, Hideyuki Okano, Kazuyoshi Baba
PURPOSE: Sleep bruxism (SB) is classified as a sleep-related movement disorder characterized by grinding and clenching of the teeth during sleep, which is responsible for a variety of clinical problems such as abnormal tooth attrition and fracture of teeth or roots. Little is known about the etiology of SB. Our previous study identified a genomic association of the serotonin 2A receptor (5-HT2A) single nucleotide polymorphism (SNP), rs6313 C>T, with SB, where the C allele carrier is associated with a 4...
December 1, 2016: Journal of Prosthodontic Research
https://www.readbyqxmd.com/read/27915167/examining-fkbp5-mrna-expression-in-human-ipsc-derived-neural-cells
#11
Richard Lieberman, Henry R Kranzler, Eric S Levine, Jonathan Covault
In peripheral blood leukocytes, FKBP5 mRNA expression is upregulated following glucocorticoid receptor activation. The single nucleotide polymorphism rs1360780 in FKBP5 is associated with psychiatric illness and has functional molecular effects. However, examination of FKBP5 regulation has largely been limited to peripheral cells, which may not reflect regulation in neural cells. We used 27 human induced pluripotent stem cell lines (iPSCs) derived from 20 subjects to examine FKBP5 mRNA expression following GR activation...
November 24, 2016: Psychiatry Research
https://www.readbyqxmd.com/read/27915086/metabolism-and-neurogenesis
#12
REVIEW
Marlen Knobloch, Sebastian Jessberger
The generation of neurons in the developing and adult mammalian brain by neural stem/progenitor cells (NSPCs) depends on a tight control of NSPC activity and neuronal differentiation that is regulated by a plethora of intrinsic and extrinsic molecular cues. Besides well-studied morphogenic signaling pathways and transcriptional codes that govern the distinct developmental steps from the dividing NSPC to a functional neuron, a critical role of cellular metabolism to determine the functional properties of NSPCs and newborn neurons has been recently identified...
December 1, 2016: Current Opinion in Neurobiology
https://www.readbyqxmd.com/read/27915022/concentration-dependent-survival-and-neural-differentiation-of-murine-embryonic-stem-cells-cultured-on-polyethylene-glycol-dimethacrylate-hydrogels-possessing-a-continuous-concentration-gradient-of-n-cadherin-derived-peptide-his-ala-val-asp-lle
#13
Hyun Ju Lim, Matthew C Mosley, Yuki Kurosu, Laura A Smith Callahan
: N-cadherin cell-cell signaling plays a key role in the structure and function of the nervous system. However, few studies have incorporated bioactive signaling from n-cadherin into tissue engineering matrices. The present study uses a continuous gradient approach in polyethylene glycol dimethacrylate hydrogels to identify concentration dependent effects of n-cadherin peptide, His-Ala-Val-Asp-Lle (HAVDI), on murine embryonic stem cell survival and neural differentiation. The n-cadherin peptide was found to affect the expression of pluripotency marker, alkaline phosphatase, in murine embryonic stem cells cultured on n-cadherin peptide containing hydrogels in a concentration dependent manner...
November 30, 2016: Acta Biomaterialia
https://www.readbyqxmd.com/read/27914827/inhibition-of-long-non-coding-rna-igf2as-protects-apoptosis-and-neuronal-loss-in-anesthetic-damaged-mouse-neural-stem-cell-derived-neurons
#14
Chengwei Song, Chengjun Song, Kui Chen, Xiangdong Zhang
BACKGROUND: In vitro culture of neural stem cell-derived neurons serves as an excellent model to study anesthetic-induced neurotoxicity. In our study, we examined the functional role of long non-coding RNA, IGF2AS, in regulating ketamine-induced neurotoxicity in murine neural stem cells. METHODS: Murine E18.5 brain-derived neural stem cells were cultured in vitro. During neural differentiation stage, ketamine-induced gene expression changes of IGF2 and IGF2AS were recorded by qRT-PCR...
November 30, 2016: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/27914013/inhibitory-effect-of-homocysteine-on-rat-neural-stem-cell-growth-in-vitro-is-associated-with-reduced-protein-levels-and-enzymatic-activities-of-aconitase-and-respiratory-complex-iii
#15
Xu-Mei Zhang, Ya-Qian Zhao, Hai Yan, Huan Liu, Guo-Wei Huang
Increased blood plasma concentration of the sulphur amino acid homocysteine (Hcy) is considered as an independent risk factor of the neurodegenerative diseases. However, the detailed molecular mechanisms by which Hcy leads to neurotoxicity have yet to be clarified. Recent research has suggested that neurotoxicity of Hcy may involve negative regulation of neural stem cell (NSC) proliferation. In the current study, primary NSCs were isolated from neonatal rat brain hippocampus and the inhibition in cell growth was observed after exposure to l50 μM and 500 μM L-Hcy...
December 2, 2016: Journal of Bioenergetics and Biomembranes
https://www.readbyqxmd.com/read/27912755/establishment-of-high-reciprocal-connectivity-between-clonal-cortical-neurons-is-regulated-by-the-dnmt3b-dna-methyltransferase-and-clustered-protocadherins
#16
Etsuko Tarusawa, Makoto Sanbo, Atsushi Okayama, Toshio Miyashita, Takashi Kitsukawa, Teruyoshi Hirayama, Takahiro Hirabayashi, Sonoko Hasegawa, Ryosuke Kaneko, Shunsuke Toyoda, Toshihiro Kobayashi, Megumi Kato-Itoh, Hiromitsu Nakauchi, Masumi Hirabayashi, Takeshi Yagi, Yumiko Yoshimura
BACKGROUND: The specificity of synaptic connections is fundamental for proper neural circuit function. Specific neuronal connections that underlie information processing in the sensory cortex are initially established without sensory experiences to a considerable extent, and then the connections are individually refined through sensory experiences. Excitatory neurons arising from the same single progenitor cell are preferentially connected in the postnatal cortex, suggesting that cell lineage contributes to the initial wiring of neurons...
December 2, 2016: BMC Biology
https://www.readbyqxmd.com/read/27912091/genetic-ablation-of-axl-does-not-protect-human-neural-progenitor-cells-and-cerebral-organoids-from-zika-virus-infection
#17
Michael F Wells, Max R Salick, Ole Wiskow, Daniel J Ho, Kathleen A Worringer, Robert J Ihry, Sravya Kommineni, Bilada Bilican, Joseph R Klim, Ellen J Hill, Liam T Kane, Chaoyang Ye, Ajamete Kaykas, Kevin Eggan
Zika virus (ZIKV) can cross the placental barrier, resulting in infection of the fetal brain and neurological defects including microcephaly. The cellular tropism of ZIKV and the identity of attachment factors used by the virus to gain access to key cell types involved in pathogenesis are under intense investigation. Initial studies suggested that ZIKV preferentially targets neural progenitor cells (NPCs), providing an explanation for the developmental phenotypes observed in some pregnancies. The AXL protein has been nominated as a key attachment factor for ZIKV in several cell types including NPCs...
December 1, 2016: Cell Stem Cell
https://www.readbyqxmd.com/read/27912090/advances-in-zika-virus-research-stem-cell-models-challenges-and-opportunities
#18
REVIEW
Guo-Li Ming, Hengli Tang, Hongjun Song
The re-emergence of Zika virus (ZIKV) and its suspected link with various disorders in newborns and adults led the World Health Organization to declare a global health emergency. In response, the stem cell field quickly established platforms for modeling ZIKV exposure using human pluripotent stem cell-derived neural progenitors and brain organoids, fetal tissues, and animal models. These efforts provided significant insight into cellular targets, pathogenesis, and underlying biological mechanisms of ZIKV infection as well as platforms for drug testing...
December 1, 2016: Cell Stem Cell
https://www.readbyqxmd.com/read/27911847/zika-virus-cell-tropism-in-the-developing-human-brain-and-inhibition-by-azithromycin
#19
Hanna Retallack, Elizabeth Di Lullo, Carolina Arias, Kristeene A Knopp, Matthew T Laurie, Carmen Sandoval-Espinosa, Walter R Mancia Leon, Robert Krencik, Erik M Ullian, Julien Spatazza, Alex A Pollen, Caleigh Mandel-Brehm, Tomasz J Nowakowski, Arnold R Kriegstein, Joseph L DeRisi
The rapid spread of Zika virus (ZIKV) and its association with abnormal brain development constitute a global health emergency. Congenital ZIKV infection produces a range of mild to severe pathologies, including microcephaly. To understand the pathophysiology of ZIKV infection, we used models of the developing brain that faithfully recapitulate the tissue architecture in early to midgestation. We identify the brain cell populations that are most susceptible to ZIKV infection in primary human tissue, provide evidence for a mechanism of viral entry, and show that a commonly used antibiotic protects cultured brain cells by reducing viral proliferation...
November 29, 2016: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/27911758/multimodal-imaging-for-dreadd-expressing-neurons-in-living-brain-and-their-application-to-implantation-of-ipsc-derived-neural-progenitors
#20
Bin Ji, Hiroyuki Kaneko, Takafumi Minamimoto, Haruhisa Inoue, Hiroki Takeuchi, Katsushi Kumata, Ming-Rong Zhang, Ichio Aoki, Chie Seki, Maiko Ono, Masaki Tokunaga, Satoshi Tsukamoto, Koji Tanabe, Ryong-Moon Shin, Takeharu Minamihisamatsu, Seiji Kito, Barry J Richmond, Tetsuya Suhara, Makoto Higuchi
: Chemogenetic manipulation of neuronal activities has been enabled by a designer receptor (designer receptor exclusively activated by designer drugs, DREADD) that is activated exclusively by clozapine-N-oxide (CNO). Here, we applied CNO as a functional reporter probe to positron emission tomography (PET) of DREADD in living brains. Mutant human M4 DREADD (hM4Di) expressed in transgenic (Tg) mouse neurons was visualized by PET with microdose [(11)C]CNO. Deactivation of DREADD-expressing neurons in these mice by nonradioactive CNO at a pharmacological dose could also be captured by arterial spin labeling MRI (ASL-MRI)...
November 9, 2016: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
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