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https://www.readbyqxmd.com/read/29471502/elevated-g6pd-expression-contributes-to-migration-and-invasion-of-hepatocellular-carcinoma-cells-by-inducing-epithelial-mesenchymal-transition
#1
Ming Lu, Lu Lu, Qiongzhu Dong, Guangyang Yu, Jinhong Chen, Lunxiu Qin, Lianxin Wang, Wenwei Zhu, Huliang Jia
Altered metabolism is one of the hallmarks of cancer cells. Pentose phosphate pathway (PPP) is a fundamental component of cellular metabolism. Glucose-6-phosphate dehydrogenase (G6PD), the rate-limiting enzyme of the PPP, is elevated in many cancers and contributes to tumor growth by producing ribose-5-phosphate and NADPH through PPP. However, the role of G6PD in hepatocellular carcinoma (HCC) metastasis and the clinical significance of G6PD in HCC progression and prognosis have not been well determined. In this study, by investigating tissue samples from HCC patients and HCC cell lines, we found that elevated G6PD expression is significantly associated with HCC metastasis and poor prognosis of HCCs, and that knockdown of G6PD inhibits in vitro proliferation, migration and invasion of HCC cell lines...
February 17, 2018: Acta Biochimica et Biophysica Sinica
https://www.readbyqxmd.com/read/29471245/intraperitoneal-administration-of-mesenchymal-stem-cells-ameliorates-acute-dextran-sulfate-sodium-induced-colitis-by-suppressing-dendritic-cells
#2
Aleksandar Nikolic, Bojana Simovic Markovic, Marina Gazdic, C Randall Harrell, Crissy Fellabaum, Nemanja Jovicic, Valentin Djonov, Nebojsa Arsenijevic, Miodrag L Lukic, Miodrag Stojkovic, Vladislav Volarevic
Dendritic cells (DCs) have important pathogenic role in the induction and progression of ulcerative colitis (UC), but their role in mesenchymal stem cells (MSCs)-mediated suppression of colon injury and inflammation is not revealed. By using dextran sodium sulfate (DSS)-induced colitis, a well-established murine model of UC, we examined effects of MSCs on phenotype and function of colon infiltrating DCs. Clinical, histological, immunophenotypic analysis and passive transfer of MSCs-primed DCs were used to evaluate capacity of MSC to suppress inflammatory phenotype of DCs in vivo...
February 19, 2018: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/29471243/trps1-suppresses-breast-cancer-epithelial-mesenchymal-transition-program-as-a-negative-regulator-of-suz12
#3
Jing Hu, Peng Su, Meng Jiao, Xinnuo Bai, Mei Qi, Hui Liu, Zhen Wu, Jingtian Sun, Gengyin Zhou, Bo Han
Breast cancer (BC) is among the most common malignant diseases and metastasis is the handcuff of treatment. Cancer metastasis is a multistep process associated with the epithelial-mesenchymal transition (EMT) program. Several studies have demonstrated that transcriptional repressor GATA binding 1 (TRPS1) played important roles in development and progression of primary BC. In this study we sought to identify the mechanisms responsible for this function of TRPS1 in the continuum of the metastatic cascade. Here we described that TRPS1 was significantly associated with BC metastasis using public assessable datasets...
February 19, 2018: Translational Oncology
https://www.readbyqxmd.com/read/29471141/the-morphological-and-molecular-mechanisms-of-epithelial-endothelial-to-mesenchymal-transition-and-its-involvement-in-atherosclerosis
#4
REVIEW
M Wesseling, T R Sakkers, S C A de Jager, G Pasterkamp, M J Goumans
Cell transdifferentiation occurs during cardiovascular development or remodeling either as a pathologic feature in the progression of disease or as a response to injury. Endothelial-to-Mesenchymal Transition (EndMT) is a process that is classified as a specialized form of Epithelial-to-Mesenchymal Transition (EMT), in which epithelial cells lose their epithelial characteristics and gain a mesenchymal phenotype. During transdifferentiation, cells lose both cell-cell contacts and their attachment to the basement membrane...
February 19, 2018: Vascular Pharmacology
https://www.readbyqxmd.com/read/29471105/icariin-doped-bioactive-glasses-seeded-with-rat-adipose-derived-stem-cells-to-promote-bone-repair-via-enhanced-osteogenic-and-angiogenic-activities
#5
Xingzhi Jing, Weifeng Yin, Hongtao Tian, Mengcun Chen, Xudong Yao, Wentao Zhu, Fengjing Guo, Yaping Ye
AIMS: Cell communication between mesenchymal stem cells and blood vessel cells are crucial for bone repair. We have previously shown that the phyto-molecule icariin significantly promoted osteogenic differentiation of rat adipose-derived stem cells (ASCs). In the present study, we aimed to investigate the relationship between icariin induced osteogenic differentiation of ASCs and angiogenesis of rat endothelial progenitor cells (EPCs). Besides, we used icariin doped 45S5 Bioglass seeded with ASCs to promote bone healing in rat calvarial bone defect models...
February 19, 2018: Life Sciences
https://www.readbyqxmd.com/read/29471062/constitutive-stimulatory-g-protein-activity-in-limb-mesenchyme-impairs-bone-growth
#6
Anara Karaca, Vijayram Reddy Malladi, Yan Zu, Olta Tafaj, Elena Paltrinieri, Joy Y Wu, Qing He, Murat Bastepe
GNAS mutations leading to constitutively active stimulatory G protein alpha-subunit (Gsα) cause different tumors, fibrous dysplasia of bone, and McCune-Albright syndrome, which are typically not associated with short stature. Enhanced signaling of the parathyroid hormone/parathyroid hormone-related peptide receptor, which couples to multiple G proteins including Gsα, leads to short bones with delayed endochondral ossification. It has remained unknown whether constitutive Gsα activity also impairs bone growth...
February 19, 2018: Bone
https://www.readbyqxmd.com/read/29471042/aspirin-induced-attenuation-of-adipogenic-differentiation-of-bone-marrow-mesenchymal-stem-cells-is-accompanied-by-the-disturbed-epigenetic-modification
#7
Yuanbo Zhan, Zhiwei He, Xinpeng Liu, Nan Miao, Feng Lin, Sen Mu, Haibin Mu, Mengtong Yuan, Xiaofang Cao, Han Jin, Zhongshuang Liu, Ying Li, Bin Zhang
Aspirin has positive effects on bone marrow mesenchymal stem cells (BMSCs) osteogenic differentiation. However, researchers did not give much thought to its effect on BMSCs adipogenic differentiation. Here, we analyzed the effect of aspirin on the BMSCs adipogenic differentiation. To detect whether the effect of aspirin on the adipogenic differentiation of BMSCs is associated with the disturbed epigenetic modification, the expression of histone deacetylases (HDACs), activity of HDACs and HAT, global histone H3 acetylation and H3k9 acetylation alterations were investigated...
February 19, 2018: International Journal of Biochemistry & Cell Biology
https://www.readbyqxmd.com/read/29471038/co-delivery-nanoparticle-to-overcome-metastasis-promoted-by-insufficient-chemotherapy
#8
Qing Zhou, Yihui Li, Yanhong Zhu, Chan Yu, Haibo Jia, Binghao Bao, Hang Hu, Chen Xiao, Jianqi Zhang, Xiaofan Zeng, Ying Wan, Huibi Xu, Zifu Li, Xiangliang Yang
Heterogeneous distribution of drug inside tumor is ubiquitous, causing regional insufficient chemotherapy, which might be the hotbed for drug resistance, tumor cell repopulation and metastasis. Herein, we verify, for the first time, that heterogeneous drug distribution induced insufficient chemotherapy would accelerate the process of epithelial mesenchymal transition (EMT), consequently resulting in the promotion of tumor metastasis. To eliminate the insufficient chemotherapy promoted metastasis, we conceived a co-delivery strategy by hydroxyethyl starch-polylactide (HES-PLA) nanoparticle, in which DOX and TGF-β receptor inhibitor, LY2157299 (LY), were administered together...
February 19, 2018: Journal of Controlled Release: Official Journal of the Controlled Release Society
https://www.readbyqxmd.com/read/29471033/inhibition-of-lymphocyte-proliferation-an-ability-shared-by-murine-mesenchymal-stem-cells-dermal-fibroblasts-and-chondrocytes
#9
Shang Zhang, Haitao Wu, Changlin Liu
It has been demonstrated that mesenchymal stem cells (MSCs) have potent immunosuppressive capacities. But it is controversial whether differentiated mature stromal cells (SCs) share the immunosuppressive capacities. A previous study examined the ability of SCs from different human tissue sites to inhibit the proliferation of lymphocytes. The results are all positive but the mechanism isn't clear, and few mouse data have been published on this topic. Using an efficient mixed cell culture assay, our in vitro data show that the anti-proliferative ability of murine MSCs on lymphocytes is shared by mature murine SCs, i...
February 19, 2018: Transplant Immunology
https://www.readbyqxmd.com/read/29471001/activated-cxcl5-cxcr2-axis-promotes-the-migration-invasion-and-emt-of-papillary-thyroid-carcinoma-cells-via-modulation-of-%C3%AE-catenin-pathway
#10
Dong Cui, Yongfu Zhao, Jingchao Xu
Initiation of epithelial-to-mesenchymal transition (EMT) is common in papillary thyroid carcinoma (PTC) and may contribute to its metastasis. Aims of the present study are to investigate whether and how the C-X-C motif chemokine ligand (CXCL)-5/C-X-C motif receptor 2 (CXCR2) axis affects PTC metastasis, with a focus on the EMT process. Herein, two PTC cell lines, KTC-1 and B-CPAP cells, identified as CXCR2-positive cells were used as the cell model. We found that a 24-h stimulation of 1 or 10 nM recombinant human CXCL5 (rhCXCL5) enhanced the migration and invasion of both KTC-1 and B-CPAP cells without affecting their proliferation...
February 19, 2018: Biochimie
https://www.readbyqxmd.com/read/29470980/graphene-coating-on-the-surface-of-cocrmo-alloy-enhances-the-adhesion-and-proliferation-of-bone-marrow-mesenchymal-stem-cells
#11
Qi Zhang, Kewen Li, Jinhong Yan, Zhuo Wang, Qi Wu, Long Bi, Min Yang, Yisheng Han
The objective was to investigate whether a graphene coating could improve the surface bioactivity of a cobalt-chromium-molybdenum-based alloy (CoCrMo). Graphene was produced by chemical vapor deposition and transferred to the surface of the CoCrMo alloy using an improved wet transfer approach. The morphology of the samples was observed, and the adhesion force and stabilization of graphene coating were analyzed by a nanoscratch test and ultrasonication test. In an in vitro studies, the adhesion and proliferation of bone marrow mesenchymal stem cells (BMSCs) cultured on the samples were quantified via an Alamar Blue assay and cell counting kit-8 (CCK-8) assay...
February 19, 2018: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/29470955/pi3k-regulates-intraepithelial-cell-positioning-through-rho-gtp-ases-in-the-developing-neural-tube
#12
Blanca Torroba, Antonio Herrera, Anghara Menendez, Sebastian Pons
Phosphatidylinositol 3-kinases (PI3Ks) are signal transducers of many biological processes. Class 1A PI3Ks are hetero dimers formed by a regulatory and a catalytic subunit. We have used the developing chicken neural tube (NT) to study the roles played by PI3K during the process of cell proliferation and differentiation. Notably, we have observed that in addition to its well characterized anti apoptotic activity, PI3K also plays a crucial role in intra epithelial cell positioning, and unlike its role in survival that mainly depends on AKT, the activity in cell positioning is mediated by Rho GTPase family members...
February 19, 2018: Developmental Biology
https://www.readbyqxmd.com/read/29470694/new-prospects-of-mesenchymal-stem-cells-for-ameliorating-temporal-lobe-epilepsy
#13
Neveen A Salem, Marwa El-Shamarka, Yasser Khadrawy, Shaimaa El-Shebiney
Temporal lobe epilepsy (TLE) is present in 30% of epileptic patients and does not respond to conventional treatments. Bone marrow derived mesenchymal stem cells (BMSCs) induce endogenous neural stem cells, inhibit neurodegeneration, and promote brain self-repair mechanisms. The present study addresses the feasibility of BMSCs transplantation against pilocarpine-induced TLE experimentally. BMSCs were injected either intravenously (IV) or in hippocampus bilaterally (IC). Increased cell count of BMSCs was achieved via IC route...
February 22, 2018: Inflammopharmacology
https://www.readbyqxmd.com/read/29469945/extravillous-trophoblast-invasion-in-placenta-accreta-is-associated-with-differential-local-expression-of-angiogenic-and-growth-factors-a-cross-sectional-study
#14
Christina M Duzyj, Irina A Buhimschi, Christine A Laky, Genevieve Cozzini, Guomao Zhao, Mark Wehrum, Catalin S Buhimschi
OBJECTIVE: Placenta accreta is clinically associated with maternal uterine scar. Our objective was to investigate the biochemical contribution of maternal scarring to hyperinvasive trophoblast. We hypothesized that trophoblast over-invasion in placenta accreta is associated with aberrant invasion-site signaling of growth and angiogenic factors known to be involved in wound healing and promotion of cell invasion through the epithelial to mesenchymal cellular program. DESIGN: Cross-sectional series...
February 22, 2018: BJOG: An International Journal of Obstetrics and Gynaecology
https://www.readbyqxmd.com/read/29469819/the-long-noncoding-rna-hotair-in-breast-cancer-does-autophagy-play-a-role
#15
Elżbieta Pawłowska, Joanna Szczepanska, Janusz Blasiak
HOTAIR (HOX transcript antisense RNA) plays a critical role in chromatin dynamics through the interaction with histone modifiers resulting in transcriptional gene silencing. The promoter of the HOTAIR gene contains multiple estrogen response elements (EREs) and is transcriptionally activated by estradiol in estrogen receptor-positive breast cancer cells. HOTAIR competes with BRCA1, a critical protein in breast cancer and is a critical regulator of genes involved in epithelial-to-mesenchymal transition. It mediates an oncogenic action of c-Myc, essential for breast carcinogenesis...
November 3, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/29469614/tgf-%C3%AE-1-induced-deposition-of-provisional-extracellular-matrix-by-tracheal-basal-cells-promotes-epithelial-to-mesenchymal-transition-in-a-jnk1-dependent-manner
#16
Jos L van der Velden, Darcy E Wagner, Karolyn G Lahue, Sarah T Abdalla, Ying W Lam, Daniel J Weiss, Yvonne M W Janssen-Heininger
Epithelial cells have been suggested as potential drivers of lung fibrosis, although the epithelial-dependent pathways that promote fibrogenesis remain unknown. Extracellular matrix is increasingly recognized as an environment that can drive cellular responses in various pulmonary diseases. In this study, we demonstrate that transforming growth factor- beta (TGF-β1)-stimulated mouse tracheal basal (MTB) cells produce provisional matrix proteins in vitro, which initiate mesenchymal changes in subsequently freshly plated MTB cells via Rho kinase- and c-Jun-N-terminal kinase (JNK1)-dependent processes...
February 22, 2018: American Journal of Physiology. Lung Cellular and Molecular Physiology
https://www.readbyqxmd.com/read/29468980/updates-on-gmscs-treatment-for-autoimmune-diseases
#17
Feng Huang, Zhong-Min Liu, Song Guo Zheng
BACKGROUND: Autoimmune disease is a refractory disease. Accumulating Evidence has revealed that the manipulation of mesenchymal stem cells may have the potential to control or even treat autoimmune diseases. Human gingiva-derived mesenchymal stem cells (GMSCs) are emerging as a new line of mesenchymal stem cells that have displayed some potential advantages in controlling and treating autoimmune diseases. OBJECTIVE: In this review, we briefly update the current understanding on the biology of GMSCs and their effects on preventing and treating autoimmune diseases...
February 20, 2018: Current Stem Cell Research & Therapy
https://www.readbyqxmd.com/read/29468853/the-effect-of-hydroxyapatite-nanoparticles-on-adipogenic-differentiation-of-human-mesenchymal-stem-cells
#18
Xing Yang, Yuanyuan Li, Qianli Huang, Xujie Liu, Ranran Zhang, Qingling Feng
Due to its excellent biocompatibility, nanosized hydroxyapatite (nHA) has drawn much attention for various applications in biomedical fields. There are growing concerns about its biosecurity, however, little is known about its effects on adipogenesis. In the present study, nHA with three different sizes were synthesized and the in vitro effects of nHA on cell proliferation and adipogenic differentiation of human mesenchymal stem cells (hMSCs) were investigated. The results clearly show that nHA does not affect the cell viability, the lipids droplets formation, triglyceride (TG) synthesis and the expression of adipogenic marker genes/proteins of hMSCs at the concentrations lower than 50 μg/ml...
February 22, 2018: Journal of Biomedical Materials Research. Part A
https://www.readbyqxmd.com/read/29468836/combining-advantages-direct-correlation-of-2d-micro-computed-tomography-datasets-onto-histomorphometric-slides-to-quantify-3d-bone-volume-in-scaffolds
#19
F Westhauser, B Reible, M Höllig, R Heller, G Schmidmaier, A Moghaddam
Micro-computed tomography (mCT) belongs to the most powerful tools for the three-dimensional (3D) assessment of bone. While it is possible to refer to landmarks in mCT scans of actual bone structure, the assessment of calcified osteoid within scaffolds is problematic, due to the missing morphological correlates. Therefore, bone formation within scaffolds is mostly analyzed using indirect parameters such as changes in volume or surface alteration, preserving histomorphometry the gold standard in the direct analysis of bone formation...
February 22, 2018: Journal of Biomedical Materials Research. Part A
https://www.readbyqxmd.com/read/29468805/aligned-nanofiber-material-supports-cell-growth-and-increases-osteogenesis-in-canine-adipose-derived-mesenchymal-stem-cells-in-vitro
#20
Sony Pandey, Kusum Rathore, Jed Johnson, Maria Cekanova
Tissue engineering shows great promise for the treatment of degenerative diseases, including bone repair. Polymer nanofibers provide a three-dimensional (3-D) scaffold for attachment and growth of mesenchymal stem cells. Increasing evidence supports that fiber alignment on scaffolds plays a major role in the viability and differentiation of stem cells. We compared the cell viability of canine adipose tissue-derived mesenchymal stem cells (cADMSCs) cultured in the aligned- (NanoAligned™) and random- (NanoECM™) oriented polycaprolactone (PCL) nanofiber-coated plates to control polystyrene tissue culture plates using a proliferation assay...
February 22, 2018: Journal of Biomedical Materials Research. Part A
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