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https://www.readbyqxmd.com/read/28423718/itraq-based-quantitative-proteomic-analysis-of-yamanaka-factors-reprogrammed-breast-cancer-cells
#1
Kun Wang, Zhiyan Shan, Lian Duan, Tiantian Gong, Feng Liu, Yue Zhang, Zhendong Wang, Jingling Shen, Lei Lei
Cancer cells had been developed to be reprogrammed into embryonic stem like cells by induced pluripotent stem cells (iPSCs) technology, however, the tumor differentiation/dedifferentiation mechanisms had not yet been analyzed on a genome-wide scale. Here, we inserted the four stem cell transcription factor genes OCT4, SOX2, C-MYC and KLF4 into MCF cells (MCFs), represented a female breast cancer cell type, and obtained iPSCs (Mcfips) in about 3 weeks. By using the LC MS/MS iTRAQ technology, we analyzed the proteomic changes between MCFs and Mcfips...
March 11, 2017: Oncotarget
https://www.readbyqxmd.com/read/28420864/insulin-growth-factor-1-protects-neural-stem-cells-against-apoptosis-induced-by-hypoxia-through-akt-mitogen-activated-protein-kinase-extracellular-signal-regulated-kinase-akt-mapk-erk-pathway-in-hypoxia-ishchemic-encephalopathy
#2
Bing Zhao, Zebao Zheng
BACKGROUND Insulin growth factor 1 (IGF-1) is reported to modulate cell growth and acts as potential therapy for traumatic brain injury. This study was designed to investigate the effect of IGF-1 on hypoxia-induced apoptosis in neural stem cells (NSCs). MATERIAL AND METHODS A hypoxia model was constructed using NSCs separated from the hippocampus of rat. NSCs were divided into four groups: cells under normoxic conditions that acted as controls (C group), cells under hypoxia (H group), cells under hypoxia with IGF-1 (HI group), and cells under hypoxia with IGF-1 as well as picropodophyllin (PPP), which acts as an inhibitor of the IGF-1 receptor (HIP group)...
April 19, 2017: Medical Science Monitor: International Medical Journal of Experimental and Clinical Research
https://www.readbyqxmd.com/read/28395796/derivation-of-human-ips-cell-lines-from-monozygotic-twins-in-defined-and-xeno-free-conditions
#3
Elias Uhlin, Harriet Rönnholm, Kelly Day, Malin Kele, Kristiina Tammimies, Sven Bölte, Anna Falk
Human induced pluripotent stem (hiPS) cell lines CTRL-9-II and CTRL-10-I were derived from healthy monozygotic twin donors using non-integrating RNA based Sendai virus reprogramming and cultured in a xeno-free chemically defined condition. The established hiPS cell lines, CTRL-9-II and CTRL-10-I, are karyotypically normal, free from reprogramming vectors, display endogenously expression of pluripotency factors at levels similar to embryonic stem cells. The generated iPS cell lines demonstrate pluripotency by passing bioinformatics assay PluriTest and by embryonic body assay...
January 2017: Stem Cell Research
https://www.readbyqxmd.com/read/28395738/a-feeder-and-xeno-free-human-induced-pluripotent-stem-cell-line-obtained-from-primary-human-dermal-fibroblasts-with-epigenetic-repression-of-reprogramming-factors-expression-gpcci001-a
#4
Michał Stefan Lach, Joanna P Wroblewska, Ewelina Augustyniak, Katarzyna Kulcenty, Wiktoria Maria Suchorska
The primary human dermal fibroblasts (PHDFs) from breast cancer patient were obtained to generate the human induced pluripotent stem cell line GPCCi001-A via lentiviral transfection. Thus, a modified EF1a-hSTEMCCA-loxP with tetO operator which regulates transgene expression was used. This method takes advantage of epigenetic regulation of transcription and allows for stable silencing of the reprogramming factors in obtained hiPS cells. To increase the potential utility of hiPSCs for clinical applications, they were adapted to feeder- and xeno-free conditions...
April 2017: Stem Cell Research
https://www.readbyqxmd.com/read/28351853/pharmaceutical-characterization-of-tropomyosin-receptor-kinase-b-agonistic-antibodies-on-human-ips-cell-derived-neurons
#5
Stefanie Traub, Heiko Stahl, Holger Rosenbrock, Eric Simon, Lore Florin, Lisa Hospach, Stefan Hoerer, Ralf Heilker
Brain-derived neurotrophic factor (BDNF) is a central modulator of neuronal development and synaptic plasticity in the central nervous system (CNS). This renders the BDNF-modulated tropomyosin receptor kinase B (TrkB) a promising drug target to treat synaptic dysfunctions. Using GRowth factor-driven expansion and INhibition of NotCH during maturation, the so-called GRINCH neurons were derived from human induced pluripotent stem (hiPS) cells. These GRINCH neurons were employed as model cells for pharmacological profiling of two TrkB-agonistic antibodies, hereafter referred to as AB2 and AB20...
March 28, 2017: Journal of Pharmacology and Experimental Therapeutics
https://www.readbyqxmd.com/read/28340154/irradiation-strongly-reduces-tumorigenesis-of-human-induced-pluripotent-stem-cells
#6
Shoki Inui, Kazumasa Minami, Emiko Ito, Hiromasa Imaizumi, Seiji Mori, Masahiko Koizumi, Satsuki Fukushima, Shigeru Miyagawa, Yoshiki Sawa, Nariaki Matsuura
Induced pluripotent stem (iPS) cells have demonstrated they can undergo self-renewal, attain pluripotency, and differentiate into various types of functional cells. In clinical transplantation of iPS cells, however, a major problem is the prevention of tumorigenesis. We speculated that tumor formation could be inhibited by means of irradiation. Since the main purpose of this study was to explore the prevention of tumor formation in human iPS (hiPS) cells, we tested the effects of irradiation on tumor-associated factors such as radiosensitivity, pluripotency and cell death in hiPS cells...
March 3, 2017: Journal of Radiation Research
https://www.readbyqxmd.com/read/28326353/in-vitro-osteogenic-capacity-of-bone-marrow-mscs-from-postmenopausal-women-reflect-the-osseointegration-of-their-cementless-hip-stems
#7
Jessica J Alm, Niko Moritz, Hannu T Aro
Age-related dysfunction of mesenchymal stromal cells (MSCs) is suggested as a main cause of altered bone repair with aging. We recently showed that in postmenopausal women undergoing cementless total hip arthroplasty (THA) aging, low bone mineral density (BMD) and age-related geometric changes of the proximal femur are risk factors for increased early migration and delayed osseointegration of the femoral stems. Extending these analyses, we have here explored how the in vitro osteogenic capacity of bone marrow MSCs from these patients reflects implant osseointegration, representing the patient's in vivo bone healing capacity...
December 2016: Bone Reports
https://www.readbyqxmd.com/read/28321048/evaluation-of-the-effects-of-power-frequency-magnetic-fields-on-the-electrical-activity-of-cardiomyocytes-differentiated-from-human-induced-pluripotent-stem-cells
#8
Masayuki Takahashi, Atsushi Saito, Yasuhiko Jimbo, Satoshi Nakasono
Although cardiac activity is known to differ between species in many respects, most evaluations of the cardiac effects of low-frequency electric and magnetic fields, which have a stimulant effect on electrically activated cells, have been performed in non-human experimental animals and cells, and the effects in humans have been assessed using theoretical models. In recent years, it has been verified that human cardiomyocytes differentiated from human induced pluripotent stem cells (hiPS-CM) are useful for evaluating human responses to various cardioactive compounds...
2017: Journal of Toxicological Sciences
https://www.readbyqxmd.com/read/28290232/retention-of-human-induced-pluripotent-stem-cells-hips-with-injectable-ha-hydrogels-for-vocal-fold-engineering
#9
Mitsuyoshi Imaizumi, Nicole Y K Li-Jessen, Yuka Sato, David T Yang, Susan L Thibeault
OBJECTIVE: One prospective treatment option for vocal fold scarring is regeneration with an engineered scaffold containing induced pluripotent stem cells (iPS). In the present study, we investigated the feasibility of utilizing an injectable hyaluronic acid (HA) scaffold encapsulated with human-iPS cell (hiPS) for regeneration of vocal folds. METHODS: Thirty athymic nude rats underwent unilateral vocal fold injury. Contralateral vocal folds served as uninjured controls...
April 2017: Annals of Otology, Rhinology, and Laryngology
https://www.readbyqxmd.com/read/28256115/serum-preadipocyte-factor-1-levels-are-not-associated-with-bone-mineral-density-among-healthy-postmenopausal-korean-women
#10
Hoon Sung Choi, Sang Wook Kim, Eun Hee Cho
BACKGROUND: Multipotent mesenchymal stem cells can differentiate into adipocytes or osteoblasts through closely regulated lineage-control processes. However, adipocyte precursor cells release preadipocyte factor 1 (Pref-1), which inhibits the differentiation of mesenchymal stem cells into mature adipocytes and osteoblasts. Previous studies have also reported an inverse association between Pref-1 levels and bone mineral density (BMD) among patients with anorexia nervosa. METHODS: In this retrospective study, we examined the correlations between Pref-1 levels and BMD among 124 healthy postmenopausal women (>50 years old)...
March 2017: Endocrinology and Metabolism
https://www.readbyqxmd.com/read/28246930/association-of-plasma-sdf-1-with-bone-mineral-density-body-composition-and-hip-fractures-in-older-adults-the-cardiovascular-health-study
#11
Laura D Carbone, Petra Bůžková, Howard A Fink, John A Robbins, Monique Bethel, Mark W Hamrick, William D Hill
Aging is associated with an increase in circulating inflammatory factors. One, the cytokine stromal cell-derived factor 1 (SDF-1 or CXCL12), is critical to stem cell mobilization, migration, and homing as well as to bone marrow stem cell (BMSC), osteoblast, and osteoclast function. SDF-1 has pleiotropic roles in bone formation and BMSC differentiation into osteoblasts/osteocytes, and in osteoprogenitor cell survival. The objective of this study was to examine the association of plasma SDF-1 in participants in the cardiovascular health study (CHS) with bone mineral density (BMD), body composition, and incident hip fractures...
February 28, 2017: Calcified Tissue International
https://www.readbyqxmd.com/read/28231034/upscaling-of-hips-cell-derived-neurons-for-high-throughput-screening
#12
Stefanie Traub, Heiko Stahl, Holger Rosenbrock, Eric Simon, Ralf Heilker
The advent of human-induced pluripotent stem (hiPS) cell-derived neurons promised to provide better model cells for drug discovery in the context of the central nervous system. This work demonstrates both the upscaling of cellular expansion and the acceleration of neuronal differentiation to accommodate the immense material needs of a high-throughput screening (HTS) approach. Using GRowth factor-driven expansion and INhibition of NotCH (GRINCH) during maturation, the derived cells are here referred to as GRINCH neurons...
March 2017: SLAS Discovery
https://www.readbyqxmd.com/read/28191778/generation-of-human-induced-pluripotent-stem-cell-derived-bona-fide-neural-stem-cells-for-ex-vivo-gene-therapy-of-metachromatic-leukodystrophy
#13
Vasco Meneghini, Giacomo Frati, Davide Sala, Silvia De Cicco, Marco Luciani, Chiara Cavazzin, Marianna Paulis, Wieslawa Mentzen, Francesco Morena, Serena Giannelli, Francesca Sanvito, Anna Villa, Alessandro Bulfone, Vania Broccoli, Sabata Martino, Angela Gritti
Allogeneic fetal-derived human neural stem cells (hfNSCs) that are under clinical evaluation for several neurodegenerative diseases display a favorable safety profile, but require immunosuppression upon transplantation in patients. Neural progenitors derived from patient-specific induced pluripotent stem cells (iPSCs) may be relevant for autologous ex vivo gene-therapy applications to treat genetic diseases with unmet medical need. In this scenario, obtaining iPSC-derived neural stem cells (NSCs) showing a reliable "NSC signature" is mandatory...
February 2017: Stem Cells Translational Medicine
https://www.readbyqxmd.com/read/28174491/comprehensive-evaluation-of-nutritional-status-before-and-after-hematopoietic-stem-cell-transplantation-in-170-patients-with-hematological-diseases
#14
Peng Liu, Boshi Wang, Xia Yan, Jingjing Cai, Yu Wang
OBJECTIVE: To investigate the nutritional status of patients before and after hematopoietic stem cell transplantation (HSCT), and explore optimal methods for assessing nutritional status in patients with hematological diseases. METHODS: This cohort study enrolled 170 patients who were diagnosed with hematological diseases and underwent allogeneic HSCT in the Department of Hematology, Peking University People's Hospital between May 2011 and April 2013. We used fixed-point continuous sampling and four nutritional screening tools, Nutritional Risk Screening 2002 (NRS-2002), Mini Nutritional Assessment (MNA), Subjective Global Assessment (SGA) and Malnutrition Universal Screening Tools (MUST), in combination with body measurements, to extensively screen and evaluate nutritional risks and status in patients receiving HSCT before entering and after leaving laminar air flow rooms...
December 2016: Chinese Journal of Cancer Research, Chung-kuo Yen Cheng Yen Chiu
https://www.readbyqxmd.com/read/28159471/microrna-211-and-autophagy-related-gene-14-signaling-regulate-osteoblast-like-cell-differentiation-of-human-induced-pluripotent-stem-cells
#15
Nobuaki Ozeki, Naoko Hase, Taiki Hiyama, Hideyuki Yamaguchi, Rie Kawai-Asano, Kazuhiko Nakata, Makio Mogi
MicroRNAs (miRNAs) have been the subject of recent attention as key regulatory factors in cell differentiation. In the current study, to explore the early signaling cascade of osteogenic differentiation of human induced pluripotent stem (hiPS) cells, we investigated miR-211 regulation and autophagy-related gene (Atg) signaling in osteogenic differentiation. In addition to reciprocal strong induction of miR-211 expression in differentiated cells following osteogenic differentiation, we found abundant Argonaute 3 bound to miR-211...
March 1, 2017: Experimental Cell Research
https://www.readbyqxmd.com/read/28137721/transcriptional-functional-and-mechanistic-comparisons-of-stem-cell-derived-hepatocytes-heparg-cells-and-three-dimensional-human-hepatocyte-spheroids-as-predictive-in-vitro-systems-for-drug-induced-liver-injury
#16
Catherine C Bell, Volker M Lauschke, Sabine U Vorrink, Henrik Palmgren, Rodger Duffin, Tommy B Andersson, Magnus Ingelman-Sundberg
Reliable and versatile hepatic in vitro systems for the prediction of drug pharmacokinetics and toxicity are essential constituents of preclinical safety assessment pipelines for new medicines. Here, we compared three emerging cell systems-hepatocytes derived from induced pluripotent stem cells, HepaRG cells, and three-dimensional primary human hepatocyte (PHH) spheroids-at transcriptional and functional levels in a multicenter study to evaluate their potential as predictive models for drug-induced hepatotoxicity...
April 2017: Drug Metabolism and Disposition: the Biological Fate of Chemicals
https://www.readbyqxmd.com/read/28130552/melatonin-micronutrients-osteopenia-treatment-study-mots-a-translational-study-assessing-melatonin-strontium-citrate-vitamin-d3-and-vitamin-k2-mk7-on-bone-density-bone-marker-turnover-and-health-related-quality-of-life-in-postmenopausal-osteopenic-women-following
#17
Sifat Maria, Mark H Swanson, Larry T Enderby, Frank D'Amico, Brianna Enderby, Rebekah M Samsonraj, Amel Dudakovic, Andre J van Wijnen, Paula A Witt-Enderby
This one-year double blind randomized control trial assessed the effects of nightly melatonin, strontium (citrate), vitamin D3 and vitamin K2 (MK7; MSDK) on bone mineral density (BMD) and quality of life (QOL) in postmenopausal osteopenic women (ages 49-75). Compared to placebo, MSDK treatment increased BMD in lumbar spine (4.3%) and left femoral neck (2.2%), with an upward trend for total left hip (p=0.069). MSDK increased serum P1NP levels and reduced bone turnover (CTx:P1NP). Psychometric analyses indicated that mood and sleep quality improved for the MSDK group...
January 26, 2017: Aging
https://www.readbyqxmd.com/read/28123640/microrna-410-promotes-chondrogenic-differentiation-of-human-bone-marrow-mesenchymal-stem-cells-through-down-regulating-wnt3a
#18
Yanjie Zhang, Xiaohan Huang, Yanhao Yuan
BACKGROUND: Chondrogenic differentiation of mesenchymal stem cells (MSCs) is important for osteoarthritis (OA) treatment. However, the specific mechanisms involved are undefined. MicroRNAs (miRNAs) downregulate protein synthesis by binding to the 3'UTR of target mRNA. METHODS: Bone marrow aspirates were obtained from OA patients undergoing total hip arthroplasty (n=8) to isolate MSCs. MiR-410 or miR-410 inhibitor were transfected into MSCs using lentivirus and the effects were assessed...
2017: American Journal of Translational Research
https://www.readbyqxmd.com/read/28115945/isolation-and-characterization-of-synovial-mesenchymal-stem-cell-derived-from-hip-joints-a-comparative-analysis-with-a-matched-control-knee-group
#19
Akihisa Hatakeyama, Soshi Uchida, Hajime Utsunomiya, Manabu Tsukamoto, Hirotaka Nakashima, Eiichiro Nakamura, Cecilia Pascual-Garrido, Ichiro Sekiya, Akinori Sakai
Purpose. To determine the characteristics of MSCs from hip and compare them to MSCs from knee. Methods. Synovial tissues were obtained from both the knee and the hip joints in 8 patients who underwent both hip and knee arthroscopies on the same day. MSCs were isolated from the knee and hip synovial samples. The capacities of MSCs were compared between both groups. Results. The number of cells per unit weight at passage 0 of synovium from the knee was significantly higher than that from the hip (P < 0.05)...
2017: Stem Cells International
https://www.readbyqxmd.com/read/28114130/identifying-cardiovascular-risk-in-survivors-of-childhood-leukaemia-treated-with-haematopoietic-stem-cell-transplantation-and-total-body-irradiation%C3%A2
#20
Christina Wei, Linda Hunt, Rachel Cox, Karin Bradley, Ruth Elson, Julian Shield, Michael Stevens, Elizabeth Crowne
BACKGROUND: Survivors of childhood with haematopoietic stem cell transplantation and total body irradiation (HSCT/TBI) have an increased cardiometabolic risk without overt obesity. AIM: To describe cardiometabolic risk in HSCT/TBI survivors and identify anthropometric measurements of adiposity representative of cardiometabolic risks in HSCT/TBI survivors. METHOD: Childhood leukaemia survivors treated with HSCT/TBI (n = 21, 11 males) were compared with chemotherapy-only (n = 31) and obese non-leukaemic controls (n = 30)...
2017: Hormone Research in Pædiatrics
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