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human embryonic stem cells

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https://www.readbyqxmd.com/read/28107608/the-increased-expression-of-tcf3-is-correlated-with-poor-prognosis-in-chinese-patients-with-nasopharyngeal-carcinoma
#1
Xiaohe Shen, Jizhao Yuan, Mengjie Zhang, Wenhua Li, Bing Ni, Yuzhang Wu, Li Jiang, Weiping Fan, Zhiqiang Tian
OBJECTIVES: Regulatory factors controlling stem cell identity and self-renewal are often active in aggressive cancers and are thought to promote cancer growth and progression. B-cell-specific transcription factor 3 (TCF3/E2A) is a member of the T-cell factor/lymphoid enhancer factor (TCF/LEF) transcription factor family that is central to regulating epidermal and embryonic stem cell identity. It has been reported that TCF3 was connected with the development and progression of a number of human cancers...
January 20, 2017: Clinical Otolaryngology
https://www.readbyqxmd.com/read/28106884/excess-reactive-oxygen-species-production-mediates-monoclonal-antibody-induced-human-embryonic-stem-cell-death-via-oncosis
#2
Ji Yun Zheng, Heng Liang Tan, Paul Thomas Matsudaira, Andre Choo
Antibody-mediated cell killing has significantly facilitated the elimination of undesired cells in therapeutic applications. Besides the well-known Fc-dependent mechanisms, pathways of antibody-induced apoptosis were also extensively studied. However, with fewer studies reporting the ability of antibodies to evoke an alternative form of programmed cell death, oncosis, the molecular mechanism of antibody-mediated oncosis remains underinvestigated. In this study, a monoclonal antibody (mAb), TAG-A1 (A1), was generated to selectively kill residual undifferentiated human embryonic stem cells (hESC) so as to prevent teratoma formation upon transplantation of hESC-derived products...
January 20, 2017: Cell Death and Differentiation
https://www.readbyqxmd.com/read/28104841/human-tissues-in-a-dish-the-research-and-ethical-implications-of-organoid-technology
#3
REVIEW
Annelien L Bredenoord, Hans Clevers, Juergen A Knoblich
The ability to generate human tissues in vitro from stem cells has raised enormous expectations among the biomedical research community, patients, and the general public. These organoids enable studies of normal development and disease and allow the testing of compounds directly on human tissue. Organoids hold the promise to influence the entire innovation cycle in biomedical research. They affect fields that have been subjects of intense ethical debate, ranging from animal experiments and the use of embryonic or fetal human tissues to precision medicine, organoid transplantation, and gene therapy...
January 20, 2017: Science
https://www.readbyqxmd.com/read/28101702/bone-marrow-very-small-embryonic-like-stem-cells-new-generation-of-autologous-cell-therapy-soon-ready-for-prime-time
#4
EDITORIAL
David M Smadja
Very small embryonic-like stem cells (VSELs) are major pluripotent stem cells described in human and mouse. In this issue of Stem Cell Reviews and Reports, Shaikh and colleagues show in a valuable work that mouse bone marrow collected after 5FU treatment contains VSELs able to undergo in vitro multi-lineage differentiation into cells from all three germ layers and also in germ and hematopoietic cells. These findings are robust since no confounding factor such as feeder cell fusion with VSELs can occur here...
January 18, 2017: Stem Cell Reviews
https://www.readbyqxmd.com/read/28098961/angiogenic-and-osteogenic-regeneration-in-rats-via-calcium-phosphate-scaffold-and-endothelial-cell-coculture-with-hbmscs-hucmscs-hipsc-mscs-and-hesc-mscs
#5
Wenchuan Chen, Xian Liu, Qianmin Chen, Chongyun Bao, Liang Zhao, Zhimin Zhu, Hockin H K Xu
Angiogenesis is a limiting factor in regenerating large bone defects. The objective of this study was to investigate angiogenic and osteogenic effects of coculture on calcium phosphate cement (CPC) scaffold using human umbilical vein endothelial cells (hUVECs) and mesenchymal stem cells (MSCs) from different origins for the first time. hUVECs were cocultured with four types of cells: human umbilical cord MSCs (hUCMSCs), human bone marrow MSCs (hBMSCs), and MSCs from induced pluripotent stem cells (hiPSC-MSCs) and embryonic stem cells (hESC-MSCs)...
January 18, 2017: Journal of Tissue Engineering and Regenerative Medicine
https://www.readbyqxmd.com/read/28096221/efficient-crispr-cas9-assisted-gene-targeting-enables-rapid-and-precise-genetic-manipulation-of-mammalian-neural-stem-cells
#6
Raul Bardini Bressan, Pooran Singh Dewari, Maria Kalantzaki, Ester Gangoso, Mantas Matjusaitis, Claudia Garcia-Diaz, Carla Blin, Vivien Grant, Harry Bulstrode, Sabine Gogolok, William C Skarnes, Steven M Pollard
Mammalian neural stem (NS) cell lines provide a tractable model for discovery across stem cell and developmental biology, regenerative medicine and neuroscience. They can be derived from foetal or adult germinal tissues and continuously propagated in vitro as adherent monolayers. NS cells are clonally expandable, genetically stable, and easily transfectable - experimental attributes compatible with targeted genetic manipulations. However, gene targeting - so critical for functional studies of embryonic stem cells - has not been exploited to date in NS cells...
January 17, 2017: Development
https://www.readbyqxmd.com/read/28096211/primate-embryogenesis-predicts-the-hallmarks-of-human-na%C3%A3-ve-pluripotency
#7
REVIEW
Thorsten Boroviak, Jennifer Nichols
Naïve pluripotent mouse embryonic stem cells (ESCs) resemble the preimplantation epiblast and efficiently contribute to chimaeras. Primate ESCs correspond to the postimplantation embryo and fail to resume development in chimaeric assays. Recent data suggest that human ESCs can be 'reset' to an earlier developmental stage, but their functional capacity remains ill defined. Here, we discuss how the naïve state is inherently linked to preimplantation epiblast identity in the embryo. We hypothesise that distinctive features of primate development provide stringent criteria to evaluate naïve pluripotency in human and other primate cells...
January 15, 2017: Development
https://www.readbyqxmd.com/read/28094826/response-to-dittrich-et-al-non-embryo-destructive-extraction-of-pluripotent-embryonic-stem-cells-overlooked-legal-prohibitions-professional-legal-consequences-and-inconsistencies-in-patent-law
#8
REVIEW
T Faltus, U Storz
The publication of "Non-embryo-destructive Extraction of Pluripotent Embryonic Stem Cells: Implications for Regenerative Medicine and Reproductive Medicine" by Dittrich et al. in Geburtshilfe und Frauenheilkunde 2015; 75: 1239-1242 1 describes various possibilities which could result from the non-embryo-destructive extraction of embryonic stem cells from human blastocysts. But implementing this method is more problematic, both legally and ethically, than the authors have represented it to be and is illegal in Germany...
December 2016: Geburtshilfe und Frauenheilkunde
https://www.readbyqxmd.com/read/28094783/a-novel-spontaneous-model-of-epithelial-mesenchymal-transition-emt-using-a-primary-prostate-cancer-derived-cell-line-demonstrating-distinct-stem-like-characteristics
#9
Naomi Harner-Foreman, Jayakumar Vadakekolathu, Stéphanie A Laversin, Morgan G Mathieu, Stephen Reeder, A Graham Pockley, Robert C Rees, David J Boocock
Cells acquire the invasive and migratory properties necessary for the invasion-metastasis cascade and the establishment of aggressive, metastatic disease by reactivating a latent embryonic programme: epithelial-to-mesenchymal transition (EMT). Herein, we report the development of a new, spontaneous model of EMT which involves four phenotypically distinct clones derived from a primary tumour-derived human prostate cancer cell line (OPCT-1), and its use to explore relationships between EMT and the generation of cancer stem cells (CSCs) in prostate cancer...
January 17, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28094017/predictive-markers-guide-differentiation-to-improve-graft-outcome-in-clinical-translation-of-hesc-based-therapy-for-parkinson-s-disease
#10
Agnete Kirkeby, Sara Nolbrant, Katarina Tiklova, Andreas Heuer, Nigel Kee, Tiago Cardoso, Daniella Rylander Ottosson, Mariah J Lelos, Pedro Rifes, Stephen B Dunnett, Shane Grealish, Thomas Perlmann, Malin Parmar
Stem cell treatments for neurodegenerative diseases are expected to reach clinical trials soon. Most of the approaches currently under development involve transplantation of immature progenitors that subsequently undergo phenotypic and functional maturation in vivo, and predicting the long-term graft outcome already at the progenitor stage remains a challenge. Here, we took an unbiased approach to identify predictive markers expressed in dopamine neuron progenitors that correlate with graft outcome in an animal model of Parkinson's disease through gene expression analysis of >30 batches of grafted human embryonic stem cell (hESC)-derived progenitors...
January 5, 2017: Cell Stem Cell
https://www.readbyqxmd.com/read/28094016/a-single-cell-roadmap-of-lineage-bifurcation-in-human-esc-models-of-embryonic-brain-development
#11
Zizhen Yao, John K Mich, Sherman Ku, Vilas Menon, Anne-Rachel Krostag, Refugio A Martinez, Leon Furchtgott, Heather Mulholland, Susan Bort, Margaret A Fuqua, Ben W Gregor, Rebecca D Hodge, Anu Jayabalu, Ryan C May, Samuel Melton, Angelique M Nelson, N Kiet Ngo, Nadiya V Shapovalova, Soraya I Shehata, Michael W Smith, Leah J Tait, Carol L Thompson, Elliot R Thomsen, Chaoyang Ye, Ian A Glass, Ajamete Kaykas, Shuyuan Yao, John W Phillips, Joshua S Grimley, Boaz P Levi, Yanling Wang, Sharad Ramanathan
During human brain development, multiple signaling pathways generate diverse cell types with varied regional identities. Here, we integrate single-cell RNA sequencing and clonal analyses to reveal lineage trees and molecular signals underlying early forebrain and mid/hindbrain cell differentiation from human embryonic stem cells (hESCs). Clustering single-cell transcriptomic data identified 41 distinct populations of progenitor, neuronal, and non-neural cells across our differentiation time course. Comparisons with primary mouse and human gene expression data demonstrated rostral and caudal progenitor and neuronal identities from early brain development...
January 5, 2017: Cell Stem Cell
https://www.readbyqxmd.com/read/28090751/a-safety-checkpoint-to-eliminate-cancer-risk-of-the-immune-evasive-cells-derived-from-human-embryonic-stem-cells
#12
Jingjin He, Zhili Rong, Xuemei Fu, Yang Xu
Human embryonic stem cells (hESCs) hold great promise in the regenerative therapy of many currently untreatable human diseases. One of the key bottlenecks is the immune rejection of hESC-derived allografts by the recipient. To overcome this challenge, we have established new approaches to induce immune protection of hESC-derived allografts through the co-expression of immune suppressive molecules CTLA4-Ig and PD-L1. However, this in turn raises a safety concern of cancer risk because these hESC-derived cells can evade immune surveillance...
January 16, 2017: Stem Cells
https://www.readbyqxmd.com/read/28090699/modelling-irf8-deficient-human-hematopoiesis-and-dendritic-cell-development-with-engineered-ips-cells
#13
Stephanie Sontag, Malrun Förster, Jie Qin, Paul Wanek, Saskia Mitzka, Herdit M Schüler, Steffen Koschmieder, Stefan Rose-John, Kristin Seré, Martin Zenke
Human induced pluripotent stem (iPS) cells can differentiate into cells of all three germ layers, including hematopoietic stem cells and their progeny. Interferon regulatory factor 8 (IRF8) is a transcription factor, which acts in hematopoiesis as lineage determining factor for myeloid cells, including dendritic cells (DC). Autosomal recessive or dominant IRF8 mutations occurring in patients cause severe monocytic and DC immunodeficiency. To study IRF8 in human hematopoiesis we generated human IRF8-/- iPS cells and IRF8-/- embryonic stem (ES) cells using RNA guided CRISPR/Cas9n genome editing...
January 16, 2017: Stem Cells
https://www.readbyqxmd.com/read/28089995/systematic-evaluation-of-markers-used-for-the-identification-of-human-induced-pluripotent-stem-cells
#14
Sumitha Prameela Bharathan, Kannan Vrindavan Manian, Syed Mohammed Musheer Aalam, Dhavapriya Palani, Prashant Ajit Deshpande, Mankuzhy Damodaran Pratheesh, Alok Srivastava, Shaji Ramachandran Velayudhan
Low efficiency of somatic cell reprogramming and heterogeneity among human induced pluripotent stem cells (hiPSCs) demand extensive characterization of isolated clones before their use in downstream applications. By monitoring human fibroblasts undergoing reprogramming for their morphological changes and expression of fibroblast (CD13), pluripotency markers (SSEA-4 and TRA-1-60) and a retrovirally expressed red fluorescent protein (RV-RFP), we compared the efficiency of these features to identify bona fide hiPSC colonies...
January 15, 2017: Biology Open
https://www.readbyqxmd.com/read/28089869/the-molecular-and-morphogenetic-basis-of-pancreas-organogenesis
#15
REVIEW
Hjalte List Larsen, Anne Grapin-Botton
The pancreas is an essential endoderm-derived organ that ensures nutrient metabolism via its endocrine and exocrine functions. Here we review the essential processes governing the embryonic and early postnatal development of the pancreas discussing both the mechanisms and molecules controlling progenitor specification, expansion and differentiation. We elaborate on how these processes are orchestrated in space and coordinated with morphogenesis. We draw mainly from experiments conducted in the mouse model but also from investigations in other model organisms, complementing a recent comprehensive review of human pancreas development (Jennings et al...
January 12, 2017: Seminars in Cell & Developmental Biology
https://www.readbyqxmd.com/read/28088685/a-semi-interpenetrating-network-of-polyacrylamide-and-recombinant-basement-membrane-allows-pluripotent-cell-culture-in-a-soft-ligand-rich-microenvironment
#16
Andrew J Price, Eva Y Huang, Vittorio Sebastiano, Alexander R Dunn
The physical properties of the extracellular matrix play an essential role in guiding stem cell differentiation and tissue morphogenesis both in vivo and in vitro. Existing work to investigate the role of matrix mechanics in directing stem cell proliferation, self-renewal, and differentiation has been limited by the poor attachment and survival of human pluripotent cells cultured on soft matrices (Young's modulus E ≲ 1000 Pa). To address this limitation we developed a protocol for generating semi-interpenetrating networks of polyacrylamide and recombinant basement membrane...
December 9, 2016: Biomaterials
https://www.readbyqxmd.com/read/28087635/rb-controls-growth-survival-and-neuronal-migration-in-human-cerebral-organoids
#17
Takeshi Matsui, Vanesa Nieto-Estévez, Sergii Kyrychenko, Jay W Schneider, Jenny Hsieh
Retinoblastoma (RB) is a tumor suppressor gene which regulates cell cycle entry to S phase via E2F transcription factors. Using knockout (KO) mice, it has been described that Rb plays a role in cell migration and differentiation in developing and adult brain as well as apoptosis. In addition, the RB family is required for the self-renewal and survival of human embryonic stem cells (ESCs). However, little is known about the role of this gene in human brain development. Here, we investigated the role of RB in cerebral organoids from human ESCs deficient for RB...
January 13, 2017: Development
https://www.readbyqxmd.com/read/28079116/katanin-p80-numa-and-cytoplasmic-dynein-cooperate-to-control-microtubule-dynamics
#18
Mingyue Jin, Oz Pomp, Tomoyasu Shinoda, Shiori Toba, Takayuki Torisawa, Ken'ya Furuta, Kazuhiro Oiwa, Takuo Yasunaga, Daiju Kitagawa, Shigeru Matsumura, Takaki Miyata, Thong Teck Tan, Bruno Reversade, Shinji Hirotsune
Human mutations in KATNB1 (p80) cause severe congenital cortical malformations, which encompass the clinical features of both microcephaly and lissencephaly. Although p80 plays critical roles during brain development, the underlying mechanisms remain predominately unknown. Here, we demonstrate that p80 regulates microtubule (MT) remodeling in combination with NuMA (nuclear mitotic apparatus protein) and cytoplasmic dynein. We show that p80 shuttles between the nucleus and spindle pole in synchrony with the cell cycle...
January 12, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28078807/traumatized-muscle-derived-multipotent-progenitor-cells-recruit-endothelial-cells-through-vascular-endothelial-growth-factor-a-action
#19
Heidi R H Supanc, Shannon Gorman, Rocky S Tuan
Traumatized muscle, such as that debrided from blast injury sites, is considered a promising and convenient tissue source for multipotent progenitor cells (MPCs), a population of adult mesenchymal stem cell (MSC)-like cells. The present study aimed to assess the regenerative therapeutic potential of human traumatized muscle-derived MPCs, e.g., for injury repair in the blast-traumatized extremity, by comparing their pro-angiogenic potential in vitro and capillary recruitment activity in vivo to those of MSCs isolated from human bone marrow, a widely-used tissue source...
January 12, 2017: Journal of Tissue Engineering and Regenerative Medicine
https://www.readbyqxmd.com/read/28078490/podocalyxin-as-a-major-pluripotent-marker-and-novel-keratan-sulfate-proteoglycan-in-human-embryonic-and-induced-pluripotent-stem-cells
#20
REVIEW
Hidenao Toyoda, Yuko Nagai, Aya Kojima, Akiko Kinoshita-Toyoda
Podocalyxin (PC) was first identified as a heavily sialylated transmembrane protein of glomerular podocytes. Recent studies suggest that PC is a remarkable glycoconjugate that acts as a universal glyco-carrier. The glycoforms of PC are responsible for multiple functions in normal tissue, human cancer cells, human embryonic stem cells (hESCs), and human induced pluripotent stem cells (hiPSCs). PC is employed as a major pluripotent marker of hESCs and hiPSCs. Among the general antibodies for human PC, TRA-1-60 and TRA-1-81 recognize the keratan sulfate (KS)-related structures...
January 11, 2017: Glycoconjugate Journal
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