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mesenchymal stem cells, stem cells,

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https://www.readbyqxmd.com/read/30317681/use-of-trichostatin-a-alters-the-expression-of-hdac3-and-kat2-and-improves-in-vitro-development-of-bovine-embryos-cloned-using-less-methylated-mesenchymal-stem-cells
#1
Carolina Gonzales da Silva, Carlos Frederico Martins, Heidi Christina Bessler, Álvaro Moraes da Fonseca Neto, Tereza Cristina Cardoso, Maurício Machaim Franco, Anelise Dos Santos Mendonça, Ligiane de Oliveira Leme, José Renato Junqueira Borges, Juaci Vitoria Malaquias, Sônia Nair Báo
The aim of this work was investigate the methylation and hydroximethylation status of mesenchymal stem cells (MSC) from amniotic fluid (MSC-AF), adipose tissue (MSC-AT) and fibroblasts (FIB-control) and verify the effect of trichostatin A (TSA) on gene expression and development of cloned bovine embryos produced using these cells. Characterization of MSC from two animals (BOV1 and BOV2) was performed by flow cytometry, immunophenotyping and analysis of cellular differentiation genes expression. The cells were used in the nuclear transfer in the absence or presence of 50 nM TSA for 20 h in embryo culture...
October 14, 2018: Reproduction in Domestic Animals, Zuchthygiene
https://www.readbyqxmd.com/read/30317648/a-dual-role-of-cholesterol-in-osteogenic-differentiation-of-bone-marrow-stromal-cells
#2
Kun Li, Chunmei Xiu, Qiang Zhou, Li Ni, Jun Du, Tingting Gong, Meng Li, Saijilafu, Huilin Yang, Jianquan Chen
Osteoblasts, the chief bone-forming cells, are differentiated from mesenchymal stromal/stem cells. Disruption of this differentiation process can cause osteoporosis, a bone disease characterized by low bone mass and deteriorated bone structure. Cholesterol has been implicated in pathogenesis of osteoporosis, and was recently identified as an endogenous activator of Hedgehog (Hh) signaling. However, its pathological and physiological roles in osteoblast differentiation are still poorly understood. Moreover, it is unclear whether these potential roles played by cholesterol are related to its capability to modulate Hh pathway...
October 14, 2018: Journal of Cellular Physiology
https://www.readbyqxmd.com/read/30317643/small-molecule-based-generation-of-functional-cardiomyocytes-from-human-umbilical-cord-derived-induced-pluripotent-stem-cells
#3
Kai Hong Wu, Su Yun Wang, Qian Ru Xiao, Yu Yang, Ning Ping Huang, Xu Ming Mo, Jian Sun
The purpose of this study was to investigate the cardiac-differentiation potential of induced pluripotent stem cells (iPSCs) generated from human umbilical cord-derived mesenchymal cells. Spontaneous beating colonies were observed at day 7 after the sequential addition of CHIR99021 and IWP-4. The combined use of CHIR99021 and IWP-4 downregulated the expression of pluripotency markers while upregulating cardiac transcription factors and cardiomyocyte-specific markers. The derived cardiomyocytes demonstrated typical sarcomeric structures and action-potential features; most importantly, the derived cells exhibited responsiveness to β-adrenergic and muscarinic stimulations...
October 14, 2018: Journal of Cellular Biochemistry
https://www.readbyqxmd.com/read/30317587/differentiation-of-microfluidic-encapsulated-trabecular-meshwork-mesenchymal-stem-cells-into-insulin-producing-cells-and-their-impact-on-diabetic-rats
#4
Ghasem Barati, Samad Nadri, Ramin Hajian, Ali Rahmani, Hossein Mostafavi, Yousef Mortazavi, Amir Hossein Taromchi
Tissue and stem cell encapsulation andtransplantation were considered as promising tools in the treatment of patients with diabetes mellitus. The aim of this study was to evaluate the effect of microfluidic encapsulation on the differentiation of trabecular meshwork mesenchymal stem cells (TM-MSC), into insulin-producing cells (IPCs) both in vitro and in vivo. The presence of differentiated cells in microfibers (three dimensional [3D]) and tissue culture plates (TCPS; two dimensional [2D]) culture was evaluated by detecting mRNA and protein expression of pancreatic islet-specific markers as well as measuring insulin release of cells in response to glucose challenges...
October 14, 2018: Journal of Cellular Physiology
https://www.readbyqxmd.com/read/30317554/alteration-of-cellular-and-immune-related-properties-of-bone-marrow-mesenchymal-stem-cells-and-macrophages-by-k562-chronic-myeloid-leukemia-cell-derived-exosomes
#5
Nazli Jafarzadeh, Zohreh Safari, Majid Pornour, Naser Amirizadeh, Mehdi Forouzandeh Moghadam, Majid Sadeghizadeh
Leukemic cells can impact the bone marrow niche to create a tumor-favorable microenvironment using their secreted factors. Little knowledge is available about immunosuppressive and tumor-promoting properties of chronic myeloid leukemia derived exosomes in bone marrow stromal components. We report here that K562-derived exosomes can affect the gene expression, cytokine secretion, nitric oxide (NO) production, and redox potential of bone marrow mesenchymal stem cells (BM-MSCs) and macrophages. Human BM-MSCs and mouse macrophages were treated with K562-derived exosomes...
October 14, 2018: Journal of Cellular Physiology
https://www.readbyqxmd.com/read/30317552/sema3b-as1-inhibited-osteogenic-differentiation-of-human-mesenchymal-stem-cells-revealed-by-quantitative-proteomics-analysis
#6
Chen Zhang, Yun Zhu, Yugang Liu, Xiguang Zhang, Qiaoning Yue, Li Li, Yatang Chen, Sheng Lu, Zhaowei Teng
Human mesenchymal stem cells (hMSCs) are fibroblastoid multipotent adult stem cells with capacities of differentiation into osteoblasts and chondrocytes and show great potential in new bone formation and bone repair-related clinical settings, such as osteoporosis. Long noncoding RNAs (lncRNAs) have been demonstrated to play important roles in various biological processes. Here, we report an antisense lncRNA SEMA3B-AS1 regulating hMSCs osteogenesis. SEMA3B-AS1 is proximal to a member of the semaphorin family Sema3b...
October 14, 2018: Journal of Cellular Physiology
https://www.readbyqxmd.com/read/30317531/human-adipose-tissue-derived-stromal-cells-attenuate-the-multiple-organ-injuries-induced-by-sepsis-and-mechanical-ventilation-in-mice
#7
Shuya Mei, Shuang Wang, Shuqing Jin, Xiang Zhao, Zhenzhen Shao, Renlingzi Zhang, Xiangsheng Yu, Yao Tong, Shibiao Chen, Zhixia Chen, Quan Li
Mechanical ventilation (MV) can augment sepsis-induced organ injury. Previous studies indicate that human mesenchymal stem cells (hMSCs) have immune-modulatory effect. We hypothesize that human adipose tissue-derived stromal cells (hADSCs) could attenuate MV and sepsis-induced organ injury. Male C57BL/6 mice were randomized to five groups: Sham group; MV group; cecal ligation and puncture (CLP) group; CLP + MV group; and CLP + MV + hADSC group. Anesthetized mice were subjected to cecal ligation and puncture surgery...
October 13, 2018: Inflammation
https://www.readbyqxmd.com/read/30317240/cd44-cd24-expressing-cervical-cancer-cells-and-radioresistant-cervical-cancer-cells-exhibit-cancer-stem-cell-characteristics
#8
Jun Zhang, Xi Chen, Lei Bian, Yujing Wang, Hong Liu
BACKGROUND: Radiation therapy is a mainstay in the treatment of cervical cancer. However, most advanced and metastatic cervical cancers are resistant to radiation therapy because of the presence of cancer stem cells (CSCs). To date, no specific markers were found for cervical CSCs. METHODS: The fraction of CD44+/CD24+ cell subpopulation was detected with flow cytometry (FCM). The clonogenicity and radiosensitivity were detected using colony-formation and radiosensitivity assay...
October 12, 2018: Gynecologic and Obstetric Investigation
https://www.readbyqxmd.com/read/30316515/eudesmin-impairs-adipogenic-differentiation-via-inhibition-of-s6k1-signaling-pathway
#9
Ki Hong Nam, Sang Ah Yi, Jaecheol Lee, Min Gyu Lee, Jee Hun Park, Hwamok Oh, Jieun Lee, Jong Woo Park, Jeung-Whan Han
Eudesmin has been reported to possess diverse therapeutic effects, including anti-tumor, anti-inflammatory, and anti-bacterial activities. However, its molecular action has not been implicated in metabolic disease. In this study, we show that treatment of mesenchymal stem cells (MSCs) with eudesmin disturbs adipogenesis via suppression of S6K1 signaling pathway. Eudesmin treatment inhibited activation and nuclear translocation of S6K1. Consequently, S6K1-mediated phosphorylation of H2B at serine 36 (H2BS36p) was reduced upon eudesmin treatment, further inducing the expression of Wnt6, Wnt10a, and Wnt10b, which disturbed adipogenic differentiation...
October 10, 2018: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/30316300/msc-stimulate-ovarian-tumor-growth-during-intercellular-communication-but-reduce-tumorigenicity-after-fusion-with-ovarian-cancer-cells
#10
Catharina Melzer, Juliane von der Ohe, Ralf Hass
The tumor microenvironment enables important cellular interactions between cancer cells and recruited adjacent populations including mesenchymal stroma/stem cells (MSC). In vivo cellular interactions of primary human MSC in co-culture with human SK-OV-3 ovarian cancer cells revealed an increased tumor growth as compared to mono-cultures of the ovarian cancer cells. Moreover, the presence of MSC stimulated formation of liver metastases. Further interactions of MSC with the ovarian cancer cells resulted in the formation of hybrid cells by cell fusion...
October 13, 2018: Cell Communication and Signaling: CCS
https://www.readbyqxmd.com/read/30315717/in-situ-blood-vessel-regeneration-using-neuropeptide-substance-p-conjugated-small-diameter-vascular-grafts
#11
Muhammad Shafiq, Lina Wang, Dengke Zhi, Qiuying Zhang, Kai Wang, Lianyong Wang, Dong-Hwee Kim, Deling Kong, Soo Hyun Kim
In situ blood vessel regeneration through host stem/progenitor cell mobilization may hold great promise for vascular reconstruction. Neuropeptide substance P (SP) has been shown to accelerate tissue repair by endogenous cell mobilization and recruitment. This study was aimed to evaluate the vascular regeneration potential of SP and heparin co-tethered vascular grafts. Polycaprolactone (PCL), PCL/SP-conjugated poly(L-lactide-co-ε-caprolactone) (PLCL-SP) (SP), and PCL/PLCL-SP/heparin-conjugated PLCL (Hep/SP) vascular grafts were implanted as rat abdominal aorta substitutes for up to 2 weeks and 4 weeks...
October 13, 2018: Journal of Biomedical Materials Research. Part B, Applied Biomaterials
https://www.readbyqxmd.com/read/30315711/adipose-derived-mesenchymal-stem-cells-alleviated-osteoarthritis-and-chondrocyte-apoptosis-through-autophagy-inducing
#12
Jun Zhou, Yu Wang, Yiming Liu, Hanjiang Zeng, Hanshi Xu, Fan Lian
OBJECTIVE: We aim to explore the effect of adipose derived mesenchymal stem cells (ADMSCs) on a knee osteoarthritis rat model and analyze how ADMSCs affect chondrocyte apoptosis. MATERIALS AND METHODS: A surgically induced rat knee osteoarthritis (OA) model was constructed. ADMSCs were engrafted into the right knee cavity. Hematoxylin and eosin (H&E), Masson, and Safranin O were used to compare the histopathology of synovial membrane and cartilage. Immunohistochemical (IHC) was used to measure MMP-13, Collagen 2 (Col-2), Caspase-3 (Cas-3), PARP, p62, LC3b, DDR-2, FGFR-1, Wnt, P-AKT/AKT, p-CAMKII/CAMKII, and p-Smad1/Smad1 expression in the articular cartilage...
October 13, 2018: Journal of Cellular Biochemistry
https://www.readbyqxmd.com/read/30314394/modification-of-the-ceramic-implant-surfaces-from-zirconia-by-the-magnetron-sputtering-of-different-calcium-phosphate-targets-a-comparative-study
#13
Anna I Kozelskaya, Evgeny N Bolbasov, Alexey S Golovkin, Alexander I Mishanin, Alice N Viknianshchuk, Evgeny V Shesterikov, Аndrey Ashrafov, Vadim A Novikov, Alexander Y Fedotkin, Igor A Khlusov, Sergey I Tverdokhlebov
In this study, thin calcium phosphate (Ca-P) coatings were deposited on zirconia substrates by radiofrequency (RF) magnetron sputtering using different calcium phosphate targets (calcium phosphate tribasic (CPT), hydroxyapatite (HA), calcium phosphate monobasic, calcium phosphate dibasic dehydrate (DCPD) and calcium pyrophosphate (CPP) powders). The sputtering of calcium phosphate monobasic and DCPD powders was carried out without an inert gas in the self-sustaining plasma mode. The physico-chemical, mechanical and biological properties of the coatings were investigated...
October 11, 2018: Materials
https://www.readbyqxmd.com/read/30314378/steric-effect-of-antioxidant-diels-alder-type-adducts-a-comparison-of-sanggenon-c-with-sanggenon-d
#14
Xican Li, Zhenxing Ren, Zimei Wu, Zhen Fu, Hong Xie, Langyu Deng, Xiaohua Jiang, Dongfeng Chen
Sanggenons C and D are two Diels-Alder-type adducts from Chinese crude drug Sang-bai-pi. Structurally, both sanggenons construct stereoisomers. In the study, they were comparatively determined using four antioxidant assays, including ferric ion reducing antioxidant power (FRAP) assay, Cu2+ -reducing assay, 1,1-diphenyl-2-picryl-hydrazl (DPPH•)-scavenging assay, and 2,2'-azino-bis (3-ethylbenzo-thiazoline-6-sulfonic acid radical (ABTS•⁺)-scavenging assay. Their Fe2+ -binding reactions were explored using UV-Vis spectra...
October 11, 2018: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/30314356/exosomes-secreted-from-induced-pluripotent-stem-cell-derived-mesenchymal-stem-cells-accelerate-skin-cell-proliferation
#15
Soo Kim, Seul Ki Lee, Hyunjung Kim, Tae Min Kim
Induced pluripotent stem cell (iPSC)-derived mesenchymal stem cells (iMSCs) serve as a unique source for cell therapy. We investigated whether exosomes from iMSCs promote the proliferation of human keratinocytes (HaCaT) and human dermal fibroblasts (HDFs). iPSCs were established from human Wharton's jelly MSCs and were allowed to differentiate into iMSCs. Exosomes were collected from the culture supernatant of MSCs (MSC-exo) and iMSCs (iMSC-exo), and their characteristics were investigated. Both exosome types possessed basic characteristics of exosomes and were taken up by skin cells in vitro and in vivo...
October 11, 2018: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/30312845/hit-cas9-a-crispr-cas9-genome-editing-device-under-tight-and-effective-drug-control
#16
Chen Zhao, Yingze Zhao, Jingfang Zhang, Jia Lu, Li Chen, Yue Zhang, Yue Ying, Junjun Xu, Shixian Wei, Yu Wang
The CRISPR/Cas9 enabled efficient gene editing in an easy and programmable manner. Controlling its activity in greater precision is desired for biomedical research and potential therapeutic translation. Here, we engrafted the CRISPR/Cas9 system with a mutated human estrogen receptor (ERT2 ), which renders it 4-hydroxytamoxifen (4-OHT) inducible for the access of genome, and a nuclear export signal (NES), which lowers the background activity. Tight and efficient drug-inducible genome editing was achieved across several human cell types, including embryonic stem cells (ESCs) and mesenchymal stem cells (MSCs), upon vigorous optimization...
September 1, 2018: Molecular Therapy. Nucleic Acids
https://www.readbyqxmd.com/read/30312747/uniformly-sized-iron-oxide-nanoparticles-for-efficient-gene-delivery-to-mesenchymal-stem-cells
#17
Qianhao Xu, Tianyuan Zhang, Qiyue Wang, Xinchi Jiang, Ai Li, Ying Li, Ting Huang, Fangyuan Li, Ying Hu, Daishun Ling, Jianqing Gao
Recent advances in nanomaterials have made iron oxide nanoparticles (IONPs) as an innovative approach for the delivery of genes. However, the effectiveness of IONPs-assisted gene delivery is currently suffering from their poor uniformity, which not only exhibits detrimental effect on the magnetic property, but also leads to the poor reproducibility to maintain the optimal gene delivery. To this end, the present study developed extremely uniform 15 nm-sized IONPs with a good monodispersity in water phase. These ultra-uniform IONPs exhibit notable potentials for an efficient gene delivery to human mesenchymal stem cells (hMSCs) with the assistance of magnetic force, which partly owes to their abilities to facilitate the cellular uptake, as well as to induce the rapid DNA release and the following nuclear transport...
October 9, 2018: International Journal of Pharmaceutics
https://www.readbyqxmd.com/read/30311853/gmsc-extracellular-vesicles-activate-schwann-cell-repair-phenotype-and-promote-nerve-regeneration
#18
Qin Mao, Phuong D Nguyen, Rabie M Shanti, Shihong Shi, Pasha Shakoori, Qunzhou Zhang, Anh D Le
A fully functional recovery of peripheral nerve injury remains a major challenge and an unmet clinical need. Recent evidence has reported promising therapeutic effects of mesenchymal stem cell (MSC)-derived extracellular vesicles (EVs) in experimental models of tissue injuries and inflammatory diseases, but less is known about their effects on peripheral nerve regeneration. Here, we investigated the effects of GMSC-derived EVs on peripheral nerve regeneration of crush-injured mice sciatic nerves. In vivo studies mimicking clinical nerve repair showed that locally wrapping gelfoam embedded with GMSC-derived EVs at the crush injury site promoted functional recovery and axonal regeneration, which were comparable to effects conferred by direct transplantation of GMSCs...
October 12, 2018: Tissue Engineering. Part A
https://www.readbyqxmd.com/read/30311795/core-shell-multicellular-spheroids-on-chitosan-as-in-vitro-3d-coculture-tumor-models
#19
Ching-Wen Tsai, Jyh-Horng Wang, Tai-Horng Young
An ideal in vitro drug screening model is important for the drug development. In addition to monoculture systems, 3 dimensional (3D) coculture systems are extensively used to simulate the in vivo tumor microenvironment as cell-cell and cell-extracellular matrix interactions within the tumor tissues can be mimicked. In this study, in vitro 3D suspension coculture multicellular spheroids with core/shell cell distribution were developed on chitosan-coated surfaces. Based on the characteristic of chitosan inhibiting cell adhesion, SW620 (colon cancer cell line), 3A6 (mesenchymal stem-like cell line) and Hs68 (foreskin fibroblast line) cells could aggregate to form 3D coculture spheroids with intimate cell contacts...
October 12, 2018: Artificial Cells, Nanomedicine, and Biotechnology
https://www.readbyqxmd.com/read/30311630/lentiviral-based-reporter-constructs-for-profiling-chondrogenic-activity-in-primary-equine-cell-populations
#20
A Martin-Pena, R M Porter, G Plumton, T M McCarrel, A J Morton, M V Guijarro, S C Ghivizzani, B Sharma, G D Palmer
Successful clinical translation of mesenchymal stem cell (MSC)-based therapies for cartilage repair will likely require the implementation of standardised protocols and broadly applicable tools to facilitate the comparisons among cell types and chondroinduction methods. The present study investigated the utility of recombinant lentiviral reporter vectors as reliable tools for comparing chondrogenic potential among primary cell populations and distinguishing cellular-level variations of chondrogenic activity in widely used three-dimensional (3D) culture systems...
October 12, 2018: European Cells & Materials
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