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https://www.readbyqxmd.com/read/28345785/nanog-overexpression-and-its-correlation-with-stem-cell-and-differentiation-markers-in-meningiomas-of-different-who-grades
#1
Diana Freitag, Aaron Lawson McLean, Michèle Simon, Arend Koch, Susanne Grube, Jan Walter, Rolf Kalff, Christian Ewald
NANOG, as a key regulator of pluripotency and acting synergistically with other factors, has been described as a crucial transcription factor in various types of cancer. In meningiomas the expression of this marker has not yet been described. With our study, we aimed to identify and localize Nanog and other possible markers of pluripotency, stem cell properties and differentiation in meningioma tissue, to elucidate a possible effect on tumorigenesis. The gene expression levels of NANOG (NANOG1 and NANOGP8), SOX2, OCT4, KLF4, ABCG2, CMYC, MSI1, CD44, NOTCH1, NES, SALL4B, TP53 and EPAS1 were quantitatively examined using RT-qPCR in 33 surgical specimens of low- (WHO grade I) as well as in atypical and anaplastic (WHO grade II/III) meningiomas with dural tissue as reference...
March 27, 2017: Molecular Carcinogenesis
https://www.readbyqxmd.com/read/28345526/aspects-of-pericytes-and-their-potential-therapeutic-use
#2
Justyna Różycka, Edyta Brzóska, Tomasz Skirecki
Pericytes, which are multi-potential stem cells, co-create the walls of the microvessels: capillaries, terminal arterioles and postcapillary venules. These cells are localized under the basement membrane, tightly encircling the endothelium. The most frequently mentioned molecular markers of pericytes include NG2 (neural-glial antigen 2), β-type platelet-derived growth factor receptor (PDGFRβ), smooth muscle α-actin (α-SMA), regulator of G protein signalling 5 (RGS5), the adhesion protein CD146 and nestin...
March 13, 2017: Postȩpy Higieny i Medycyny Doświadczalnej
https://www.readbyqxmd.com/read/28344005/mir-342-5p-regulates-neural-stem-cell-proliferation-and-differentiation-downstream-to-notch-signaling-in-mice
#3
Fang Gao, Yu-Fei Zhang, Zheng-Ping Zhang, Luo-An Fu, Xiu-Li Cao, Yi-Zhe Zhang, Chen-Jun Guo, Xian-Chun Yan, Qin-Chuan Yang, Yi-Yang Hu, Xiang-Hui Zhao, Ya-Zhou Wang, Sheng-Xi Wu, Gong Ju, Min-Hua Zheng, Hua Han
Notch signaling is critically involved in neural development, but the downstream effectors remain incompletely understood. In this study, we cultured neurospheres from Nestin-Cre-mediated conditional Rbp-j knockout (Rbp-j cKO) and control embryos and compared their miRNA expression profiles using microarray. Among differentially expressed miRNAs, miR-342-5p showed upregulated expression as Notch signaling was genetically or pharmaceutically interrupted. Consistently, the promoter of the miR-342-5p host gene, the Ena-vasodilator stimulated phosphoprotein-like (Evl), was negatively regulated by Notch signaling, probably through HES5...
March 15, 2017: Stem Cell Reports
https://www.readbyqxmd.com/read/28342972/remodeling-the-th1-polarized-systemic-environment-contributes-to-neurogenesis-and-cognitive-function-via-the-wnt7a-pathway-in-neonatal-mice
#4
YunLong Xu, Fen He, FangFang Qi, Guangqi Yang, FuXiang Zheng, JunHua Yang, Xiao Wang, JunXiu Liu, JunTao Zou
Neonatal Bacillus Calmette-Guérin (BCG) vaccination results in a positive effect on hippocampal neurogenesis and cognition. Serum cytokines are considered to be the chief culprit. In this study, serum from BCG-treated mice was identified as Th1 polarized serum. The serum showed an increased ratio of IFN-γ to IL-4 and decreased levels of TNF-α and IL-6. After Th1 polarized serum was injected intraperitoneally into postnatal mice, the levels of cytokines and ratio of IFN-γ to IL-4 in the serum and hippocampus of postnatal mice showed a similar alteration as those in Th1 polarized serum...
March 22, 2017: Neurobiology of Learning and Memory
https://www.readbyqxmd.com/read/28341829/usp9x-deubiquitylating-enzyme-maintains-raptor-protein-levels-mtorc1-signalling-and-proliferation-in-neural-progenitors
#5
Caitlin R Bridges, Men-Chee Tan, Susitha Premarathne, Devathri Nanayakkara, Bernadette Bellette, Dusan Zencak, Deepti Domingo, Jozef Gecz, Mariyam Murtaza, Lachlan A Jolly, Stephen A Wood
USP9X, is highly expressed in neural progenitors and, essential for neural development in mice. In humans, mutations in USP9X are associated with neurodevelopmental disorders. To understand USP9X's role in neural progenitors, we studied the effects of altering its expression in both the human neural progenitor cell line, ReNcell VM, as well as neural stem and progenitor cells derived from Nestin-cre conditionally deleted Usp9x mice. Decreasing USP9X resulted in ReNcell VM cells arresting in G0 cell cycle phase, with a concomitant decrease in mTORC1 signalling, a major regulator of G0/G1 cell cycle progression...
March 24, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28340569/an-immunohistochemical-enzymatic-and-behavioral-study-of-cd157-bst-1-as-a-neuroregulator
#6
Haruhiro Higashida, Mingkun Liang, Toru Yoshihara, Shirin Akther, Azam Fakhrul, Cherepanov Stanislav, Tae-Sik Nam, Uh-Hyun Kim, Satoka Kasai, Tomoko Nishimura, Naila Al Mahmuda, Shigeru Yokoyama, Katsuhiko Ishihara, Maria Gerasimenko, Alla Salmina, Jing Zhong, Takahiro Tsuji, Chiharu Tsuji, Olga Lopatina
BACKGROUND: Recent rodent and human studies provide evidence in support of the fact that CD157, well known as bone marrow stromal cell antigen-1 (BST-1) and a risk factor in Parkinson's disease, also meaningfully acts in the brain as a neuroregulator and affects social behaviors. It has been shown that social behaviors are impaired in CD157 knockout mice without severe motor dysfunction and that CD157/BST1 gene single nucleotide polymorphisms are associated with autism spectrum disorder in humans...
March 24, 2017: BMC Neuroscience
https://www.readbyqxmd.com/read/28339768/the-transcription-factor-olig2-is-important-for-the-biology-of-diffuse-intrinsic-pontine-gliomas
#7
Jane L Anderson, Ranjithmenon Muraleedharan, Nicole Oatman, Amanda Klotter, Satarupa Sengupta, Ronald R Waclaw, Jianqiang Wu, Rachid Drissi, Lili Miles, Eric H Raabe, Matthew L Weirauch, Maryam Fouladi, Lionel M Chow, Lindsey Hoffman, Mariko DeWire, Biplab Dasgupta
Background.: Diffuse intrinsic pontine glioma (DIPG) is a high-grade brainstem glioma of children with dismal prognosis. There is no single unifying model about the cell of origin of DIPGs. Proliferating cells in the developing human and mouse pons, the site of DIPGs, express neural stem/progenitor cell (NPC) markers, including Sox2, nestin, vimentin, Olig2, and glial fibrillary acidic protein, in an overlapping and non-overlapping manner, suggesting progenitor cell heterogeneity in the pons...
February 23, 2017: Neuro-oncology
https://www.readbyqxmd.com/read/28337381/hla-e-inhibitor-enhances-the-killing-of-neuroblastoma-stem-cells-by-co-cultured-dendritic-cells-and-cytokine-induced-killer-cells-loaded-with-membrane-based-microparticles
#8
Zijun Zhen, Kaibin Yang, Litong Ye, Zhiyao You, Rirong Chen, Ying Liu, Youjian He
Neuroblastoma stem cells (NSCs) can cause drug resistance and tumor recurrence. This study aimed to enhance the lytic effect of dendritic cells (DCs) co-cultured with cytokine-induced killer (CIK) cells. NSCs were obtained by suspension culture, and DC-CIK cells were loaded with extracted NSC membrane-based microparticles (MMPs) before evaluating the lytic effect of DC-CIK cells on NSCs. After inhibiting the function or expression of human leukocyte antigen-E (HLA-E) in NSCs by anti-HLA-E monoclonal antibody or siRNA, the DC-CIK cell lytic effect on NSCs was re-assessed...
2017: American Journal of Cancer Research
https://www.readbyqxmd.com/read/28337288/which-has-more-stem-cell-characteristics-m%C3%A3-ller-cells-or-m%C3%A3-ller-cells-derived-from-in-vivo-culture-in-neurospheres
#9
Hong-Pei Ji, Yu Xiong, En-Dong Zhang, Wei-Tao Song, Zhao-Lin Gao, Fei Yao, Hong Sun, Rong-Rong Zhou, Xiao-Bo Xia
OBJECTIVE: Müller cells can be acquired from in vitro culture or a neurosphere culture system. Both culture methods yield cells with progenitor-cell characteristics that can differentiate into mature nervous cells. We compared the progenitor-cell traits of Müller cells acquired from each method. METHODS: Primary murine Müller cells were isolated in serum culture media and used to generate Müller cells derived from neurospheres in serum-free culture conditions...
2017: American Journal of Translational Research
https://www.readbyqxmd.com/read/28326040/effects-of-topical-icing-on-inflammation-angiogenesis-revascularization-and-myofiber-regeneration-in-skeletal-muscle-following-contusion-injury
#10
Daniel P Singh, Zohreh Barani Lonbani, Maria A Woodruff, Tony J Parker, Roland Steck, Jonathan M Peake
Contusion injuries in skeletal muscle commonly occur in contact sport and vehicular and industrial workplace accidents. Icing has traditionally been used to treat such injuries under the premise that it alleviates pain, reduces tissue metabolism, and modifies vascular responses to decrease swelling. Previous research has examined the effects of icing on inflammation and microcirculatory dynamics following muscle injury. However, whether icing influences angiogenesis, collateral vessel growth, or myofiber regeneration remains unknown...
2017: Frontiers in Physiology
https://www.readbyqxmd.com/read/28323540/identification-of-multipotent-stem-cells-in-human-brain-tissue-following-stroke
#11
Kotaro Tatebayashi, Yasue Tanaka, Akiko Nakano-Doi, Rika Sakuma, Saeko Kamachi, Manabu Shirakawa, Kazutaka Uchida, Hiroto Kageyama, Toshinori Takagi, Shinichi Yoshimura, Tomohiro Matsuyama, Takayuki Nakagomi
Perivascular regions of the brain harbor multipotent stem cells. We previously demonstrated that brain pericytes near blood vessels also develop multipotency following experimental ischemia in mice, and that these ischemia-induced multipotent stem cells (iSCs) can contribute to neurogenesis. However, it is essential to understand the traits of iSCs in the post-stroke human brain for possible applications in stem cell-based therapies for stroke patients. Here we report for the first time that iSCs can be isolated from the post-stroke human brain...
March 21, 2017: Stem Cells and Development
https://www.readbyqxmd.com/read/28314928/hilar-granule-cells-of-the-mouse-dentate-gyrus-effects-of-age-septotemporal-location-strain-and-selective-deletion-of-the-proapoptotic-gene-bax
#12
Keria Bermudez-Hernandez, Yi-Ling Lu, Jillian Moretto, Swati Jain, John J LaFrancois, Aine M Duffy, Helen E Scharfman
The dentate gyrus (DG) principal cells are glutamatergic granule cells (GCs), and they are located in a compact cell layer. However, GCs are also present in the adjacent hilar region, but have been described in only a few studies. Therefore, we used the transcription factor prospero homeobox 1 (Prox1) to quantify GCs at postnatal day (PND) 16, 30, and 60 in a common mouse strain, C57BL/6J mice. At PND16, there was a large population of Prox1-immunoreactive (ir) hilar cells, with more in the septal than temporal hippocampus...
March 17, 2017: Brain Structure & Function
https://www.readbyqxmd.com/read/28303247/effect-of-wnt-signaling-on-the-differentiation-of-islet-%C3%AE-cells-from-adipose-derived-stem-cells
#13
Hefei Wang, Yu Ren, Xiao Hu, Min Ma, Xiao Wang, Hao Liang, Dongjun Liu
The Wnt signaling is critical for pancreatic development and islet function; however, its precise effects on the development and function of the β-cells remain controversial. Here we examined mRNA and protein expression of components of the Wnt signaling throughout the differentiation of islet β-cells from adipose-derived stem cells (ADSCs). After induction, ADSCs expressed markers of β-cells, including the insulin, PDX1, and glucagon genes, and the PDX1, CK19, nestin, insulin, and C-peptide proteins, indicating their successful differentiation...
2017: BioMed Research International
https://www.readbyqxmd.com/read/28300551/role-of-caveolin-1-vascular-endothelial-growth-factor-pathway-in-basic-fibroblast-growth-factor-induced-angiogenesis-and-neurogenesis-after-treadmill-training-following-focal-cerebral-ischemia-in-rats
#14
Qiongyi Pang, Huimei Zhang, Zhenzhen Chen, Yudan Wu, Min Yidian Bai Liu, Yun Zhao, Fengxia Tu, Chan Liu, Xiang Chen
Exercise is known to aid functional recovery following ischemia, though the mechanisms responsible for the beneficial effects of exercise on recovery from ischemic stroke are not fully understood. Basic fibroblast growth factor (bFGF) contributes to angiogenesis and promotes neurologic functional recovery after stroke. The present study aimed to investigate the possible mechanisms whereby treadmill exercise ameliorated impaired angiogenesis and neurogenesis following transient cerebral ischemia in middle cerebral artery occlusion (MCAO) rats...
March 11, 2017: Brain Research
https://www.readbyqxmd.com/read/28280847/neuronal-differentiation-capability-of-nasal-polyps-of-chronic-rhinosinusitis
#15
Michael Koennecke, Robert Böscke, Ann-Christin Pfannerstill, Stefan Reers, Martina Elsner, Benjamin Fell, Anja Richter, Karl-Ludwig Bruchhage, Sandra Schumann, Ralph Pries, Ludger Klimek, Barbara Wollenberg
Chronic rhinosinusitis with nasal polyps is considered a subgroup of chronic rhinosinusitis and a significant health problem, but the pathogenesis remains unclear to date. Therefore, we investigated the stemness to determine the role of stem cells in nasal polyps, with additional analysis of the neuronal differentiation potential of nasal polyp cells. We determined gene and protein expression profiles of stem cells in nasal polyp tissues, using whole genome microarray, quantitative real-time PCR (qPCR), immunohistochemistry, and flow cytometry...
March 9, 2017: Archivum Immunologiae et Therapiae Experimentalis
https://www.readbyqxmd.com/read/28269202/colony-size-effect-on-neural-differentiation-of-embryonic-stem-cells-microprinted-on-stromal-cells
#16
Ramila Joshi, James Buchanan, Hossein Tavana
Controlling cellular microenvironment to induce neural differentiation of embryonic stem cells (ESCs) remains a major challenge. We address this need by introducing a micro-engineered co-culture system that resembles embryonic development in terms of direct intercellular interactions and induces neural differentiation of ESCs. A polymeric aqueous two-phase system (ATPS)-mediated robotic microprinting technology allows precise localization of mouse ESCs (mESCs) over a layer of supporting stromal cells. mESCs proliferate over a 2-week culture period into a single colony of defined size...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28266021/gingival-spheroids-possess-multilineage-differentiation-potential
#17
Rajasekaran Subbarayan, Dinesh Murugan Girija, Suresh Ranga Rao
Recently studies have demonstrated HGMSCs as ideal candidates for regenerative study. Interestingly we found that HGMSCs derived spheroids are more potent and maintain the properties of stemness convincingly compared to conventional culture methods. During the culture, GMSCs instinctively accumulated into spheroids and display multipotent STRO-1 and Vimentin-positive cells. Reduced phenotypic expression of CD73, CD105 and, elevated expression STRO-1 and CD-34. Pluripotent nature of S-GMSCs putatively shown the expression of OCT4A, NANOG, SOX-2, SSEA4, TRA-1-60, and TRA-181...
March 7, 2017: Journal of Cellular Physiology
https://www.readbyqxmd.com/read/28261273/capacity-of-human-dental-follicle-cells-to-differentiate-into-neural-cells-in-vitro
#18
Shingo Kanao, Naomi Ogura, Kosuke Takahashi, Ko Ito, Masaaki Suemitsu, Kayo Kuyama, Toshirou Kondoh
The dental follicle is an ectomesenchymal tissue surrounding the developing tooth germ. Human dental follicle cells (hDFCs) have the capacity to commit to differentiation into multiple cell types. Here we investigated the capacity of hDFCs to differentiate into neural cells and the efficiency of a two-step strategy involving floating neurosphere-like bodies for neural differentiation. Undifferentiated hDFCs showed a spindle-like morphology and were positive for neural markers such as nestin, β-III-tubulin, and S100β...
2017: Stem Cells International
https://www.readbyqxmd.com/read/28260940/ultrastructural-changes-and-nestin-expression-accompanying-compensatory-renal-growth-after-unilateral-nephrectomy-in-adult-rats
#19
Mohamed Ahmed Eladl, Wael M Elsaed, Hoda Atef, Mohamed El-Sherbiny
BACKGROUND: Several renal disorders affect the glomerular podocytes. Compensatory structural and functional changes have been observed in animals that have undergone unilateral renal ablation. These changes occur as a pliant response to quench the increased functional demand to maintain homeostasis of fluid and solutes. Nestin is an intermediate filament protein present in the glomerular podocytes of the adult kidney and is linked with the maintenance of its foot process structure. Structural changes in the podocytes ultimately restructure the filtration barrier...
2017: International Journal of Nephrology and Renovascular Disease
https://www.readbyqxmd.com/read/28258388/smad7-deficiency-stimulates-m%C3%A3-ller-progenitor-cell-proliferation-during-the-development-of-the-mammalian-retina
#20
Martina Kugler, Anja Schlecht, Rudolf Fuchshofer, Sabrina I Schmitt, Ingo Kleiter, Ludwig Aigner, Ernst R Tamm, Barbara M Braunger
The transforming growth factor-β (TGF-β) pathway contributes to maintain the quiescence of adult neural stem and progenitor cells in the brain. In the retina, Müller cells are discussed to represent a glial cell population with progenitor-like characteristics. Here, we aimed to investigate if elevated TGF-β signaling modulates the proliferation of Müller cells during retinal development. We generated mutant mice with a systemic, heterozygous up-regulation of TGF-β signaling by deleting its inhibitor SMAD7...
March 3, 2017: Histochemistry and Cell Biology
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