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https://www.readbyqxmd.com/read/29784817/topography-of-epithelial-mesenchymal-plasticity
#1
Francesc Font-Clos, Stefano Zapperi, Caterina A M La Porta
The transition between epithelial and mesenchymal states has fundamental importance for embryonic development, stem cell reprogramming, and cancer progression. Here, we construct a topographic map underlying epithelial-mesenchymal transitions using a combination of numerical simulations of a Boolean network model and the analysis of bulk and single-cell gene expression data. The map reveals a multitude of metastable hybrid phenotypic states, separating stable epithelial and mesenchymal states, and is reminiscent of the free energy measured in glassy materials and disordered solids...
May 21, 2018: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/29783088/evaluation-of-genotoxicity-and-mutagenic-effects-of-vector-dna-nanocomplexes-in-transfected-mesenchymal-stem-cells-by-flow-cytometry
#2
Alireza Nomani, Xuguang Chen, Arash Hatefi
In recent years, there has been a great deal of interest in ex-vivo genetic modification of mesenchymal stem cells (MSCs) to meet various biomedical needs. Considering the self-renewal potential of MSCs, it is critically important to ensure that transfection vectors (gene carriers) do not induce genotoxicity because they could theoretically turn a single stem cell into a cancer-initiating cell. Unfortunately, there is currently no reliable, unbiased, and quantitative method to measure genotoxicity (micronuclei formation) of gene carriers directly in transfected MSCs...
May 18, 2018: Acta Biomaterialia
https://www.readbyqxmd.com/read/29782011/a-preclinical-mouse-model-of-osteosarcoma-to-define-the-extracellular-vesicle-mediated-communication-between-tumor-and-mesenchymal-stem-cells
#3
Tonny Lagerweij, Maria Pérez-Lanzón, S Rubina Baglio
Within the tumor microenvironment, resident or recruited mesenchymal stem cells (MSCs) contribute to malignant progression in multiple cancer types. Under the influence of specific environmental signals, these adult stem cells can release paracrine mediators leading to accelerated tumor growth and metastasis. Defining the crosstalk between tumor and MSCs is of primary importance to understand the mechanisms underlying cancer progression and identify novel targets for therapeutic intervention. Cancer cells produce high amounts of extracellular vesicles (EVs), which can profoundly affect the behavior of target cells in the tumor microenvironment or at distant sites...
May 6, 2018: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/29781255/combination-therapy-of-canine-osteosarcoma-with-canine-bone-marrow-stem-cells-bone-morphogenetic-protein-and-carboplatin-in-an-in-vivo-model
#4
R E G Rici, S E A L Will, A C L Luna, L F Melo, A C Santos, R F Rodrigues, R M Leandro, D A Maria
Osteosarcoma (OSA) is the most common malignant bone cancer in children and dogs. The therapeutic protocols adopted for dogs and humans are very similar, involving surgical options such as amputation. Besides surgical options, radiotherapy and chemotherapy also are adopted. However, hematologic, gastrointestinal and renal toxicity may occur because of chemotherapy treatments. Recent study clearly showed that mesenchymal stem cells (MSCs) combined with recombinant human bone morphogenetic protein (rhBMP-2) may be associated with decreases of the tumorigenic potential of canine OSA...
May 20, 2018: Veterinary and Comparative Oncology
https://www.readbyqxmd.com/read/29780735/the-expression-and-functional-significance-of-vascular-endothelial-cadherin-cd44-and-vimentin-in-oral-squamous-cell-carcinoma
#5
Soussan Irani, Arash Dehghan
Objectives: Ninety percent of head and neck cancers are squamous cell carcinoma which develops in the oral cavity. Metastasis is the main causative factor for death in 90% of all cancer-related deaths and begins with the invasion of tumor cells through the walls of small blood vessels or lymph vessels. A growing body of evidence has shown that vasculogenic mimicry (VM) facilitates tumor growth and cancer metastasis. The current study aimed to present the role of vascular endothelial (VE)-cadherin, CD44, and vimentin in inducing VM and epithelial-mesenchymal transition (EMT) and to identify the cancer stem cell (CSC) niche in different grades of oral squamous cell carcinoma (OSCC)...
March 2018: Journal of International Society of Preventive & Community Dentistry
https://www.readbyqxmd.com/read/29780673/breast-fibroblasts-in-both-cancer-and-normal-tissues-induce-phenotypic-transformation-of-breast-cancer-stem-cells-a-preliminary-study
#6
Bixiao Wang, Chunfang Xi, Mingwei Liu, Haichen Sun, Shuang Liu, Lei Song, Hua Kang
Background: Breast cancer stem cells (BCSCs) are associated with the invasion of breast cancer. In recent years, studies have demonstrated different phenotypes among BCSCs. Furthermore, BCSCs of diverse phenotypes are present at different tumour sites and different histological stages. Fibroblasts are involved in the phenotypic transformation of BCSCs. Cancer-associated fibroblasts (CAFs) participate in the induction of epithelial-mesenchymal transition, thereby promoting the acquisition of stem cell characteristics, but little is known about the role of normal fibroblasts (NFs) in the phenotypic transformation of BCSCs or about the effect of CAFs and NFs on BCSC phenotypes...
2018: PeerJ
https://www.readbyqxmd.com/read/29775627/acquisition-of-tumorigenic-potential-and-therapeutic-resistance-in-cd133-subpopulation-of-prostate-cancer-cells-exhibiting-stem-cell-like-characteristics
#7
Rajnee Kanwal, Sanjeev Shukla, Ethan Walker, Sanjay Gupta
The role of CD133 (Prominin-1) as a cancer stem cell marker may be useful for therapeutic approaches and prognostication in prostate cancer patients. We investigated the stem-cell-related function and biological features of a subpopulation of CD133+ cells isolated from established primary human prostate cancer cell lines. The CD133+ cells sorted from human prostate cancer 22Rv1 exhibited high clonogenic and tumorigenic capabilities, sphere forming capacity and serially reinitiated transplantable tumors in NOD-SCID mice...
May 15, 2018: Cancer Letters
https://www.readbyqxmd.com/read/29774072/twist-promotes-tumor-metastasis-in-basal-like-breast-cancer-by-transcriptionally-upregulating-ror1
#8
Jingying Cao, Xin Wang, Tao Dai, Yuanzhong Wu, Meifang Zhang, Renxian Cao, Ruhua Zhang, Gang Wang, Rou Jiang, Binhua P Zhou, Jian Shi, Tiebang Kang
Rationale: Twist is a key transcription factor for induction of epithelial-mesenchymal transition (EMT), which promotes cell migration, invasion, and cancer metastasis, confers cancer cells with stem cell-like characteristics, and provides therapeutic resistance. However, the functional roles and targeted genes of Twist in EMT and cancer progression remain elusive. Methods: The potential targeted genes of Twist were identified from the global transcriptomes of T47D/Twist cells by microarray analysis. EMT phenotype was detected by western blotting and immunofluorescence of marker proteins...
2018: Theranostics
https://www.readbyqxmd.com/read/29773902/nedd9-promotes-oncogenic-signaling-a-stem-mesenchymal-gene-signature-and-aggressive-ovarian-cancer-growth-in-mice
#9
Rashid Gabbasov, Fang Xiao, Caitlin G Howe, Laura E Bickel, Shane W O'Brien, Daniel Benrubi, Thuy-Vy Do, Yan Zhou, Emmanuelle Nicolas, Kathy Q Cai, Samuel Litwin, Sachiko Seo, Erica A Golemis, Denise C Connolly
Neural precursor cell expressed, developmentally downregulated 9 (NEDD9) supports oncogenic signaling in a number of solid and hematologic tumors. Little is known about the role of NEDD9 in ovarian carcinoma (OC), but available data suggest elevated mRNA and protein expression in advanced stage high-grade cancers. We used a transgenic MISIIR-TAg mouse OC model combined with genetic ablation of Nedd9 to investigate its action in the development and progression of OC. A Nedd9-/- genotype delayed tumor growth rate, reduced incidence of ascites, and reduced expression and activation of signaling proteins including SRC, STAT3, E-cadherin, and AURKA...
May 18, 2018: Oncogene
https://www.readbyqxmd.com/read/29773592/investigating-chemoresistance-to-improve-sensitivity-of-childhood-t-cell-acute-lymphoblastic-leukemia-to-parthenolide
#10
Benjamin C Ede, Rafal R Asmaro, John P Moppett, Paraskevi Diamanti, Allison Blair
Current therapies for childhood T cell acute lymphoblastic leukemia have increased survival rates to above 85% in developed countries. Unfortunately, some patients fail to respond to therapy and many suffer from serious side effects, highlighting the need to investigate other agents to treat this disease. Parthenolide, a nuclear factor kappa B inhibitor and reactive oxygen species inducer, has been shown to have excellent anti-cancer activity in pediatric leukemia xenografts, with minimal effects on normal hemopoietic cells...
May 17, 2018: Haematologica
https://www.readbyqxmd.com/read/29771420/imp3-promotes-tnbc-stem-cell-property-through-mirna-34a-regulation
#11
Q-D Huang, S-R Zheng, Y-J Cai, D-L Chen, Y-Y Shen, C-Q Lin, X-Q Hu, X-H Wang, H Shi, G-L Guo
OBJECTIVE: To explore the expression and function of insulin-like growth factor II (IGFII) mRNA binding protein (IMP3) in the Triple Negative Breast Cancer (TNBC). MATERIALS AND METHODS: According to previously reported gene expression array, we found that IMP3 had significantly higher expression in the CD44+CD24-ESA+ cell cluster, tumor initiating cell or cancer stem cell (CSCs), compared to other tumor cells. Based on the GEO database (GEO accession No. GSE6883), we detected the mRNA levels of IMP 1,2 and 3 by quantitative polymerase chain reaction (q-PCR) in CD44+CD24-ESA+ cell cluster and other breast tumor cell clusters...
May 2018: European Review for Medical and Pharmacological Sciences
https://www.readbyqxmd.com/read/29771197/emerging-insights-into-wnt-%C3%AE-catenin-signaling-in-head-and-neck-cancer
#12
K A Alamoud, M A Kukuruzinska
Head and neck cancer presents primarily as head and neck squamous cell carcinoma (HNSCC), a debilitating malignancy fraught with high morbidity, poor survival rates, and limited treatment options. Mounting evidence indicates that the Wnt/β-catenin signaling pathway plays important roles in the pathobiology of HNSCC. Wnt/β-catenin signaling affects multiple cellular processes that endow cancer cells with the ability to maintain and expand immature stem-like phenotypes, proliferate, extend survival, and acquire aggressive characteristics by adopting mesenchymal traits...
June 2018: Journal of Dental Research
https://www.readbyqxmd.com/read/29770167/reactive-oxygen-species-mediated-tumor-microenvironment-transformation-the-mechanism-of-radioresistant-gastric-cancer
#13
REVIEW
Huifeng Gu, Tianhe Huang, Yicheng Shen, Yin Liu, Fuling Zhou, Yanxia Jin, Haseeb Sattar, Yongchang Wei
Radioresistance is one of the primary causes responsible for therapeutic failure and recurrence of cancer. It is well documented that reactive oxygen species (ROS) contribute to the initiation and development of gastric cancer (GC), and the levels of ROS are significantly increased in patients with GC accompanied with abnormal expressions of multiple inflammatory factors. It is also well documented that ROS can activate cancer cells and inflammatory cells, stimulating the release of a variety of inflammatory cytokines, which subsequently mediates the tumor microenvironment (TME) and promotes cancer stem cell (CSC) maintenance as well as renewal and epithelial-mesenchymal transition (EMT), ultimately resulting in radioresistance and recurrence of GC...
2018: Oxidative Medicine and Cellular Longevity
https://www.readbyqxmd.com/read/29765540/could-a-plant-derived-protein-potentiate-the-anticancer-effects-of-a-stem-cell-in-brain-cancer
#14
Camila Ramalho Bonturi, Helena Motaln, Mariana Cristina Cabral Silva, Bruno Ramos Salu, Marlon Vilela de Brito, Luciana de Andrade Luz Cost, Heron Fernandes Vieira Torquato, Natalia Neto Dos Santos Nunes, Edgar Julian Paredes-Gamero, Tamara Lah Turnšek, Maria Luiza Vilela Oliva
Glioblastoma is the most aggressive brain tumor with poor overall survival bellow 2 years. The natural compounds with anti-cancer properties, are thus gaining attention for possible adjuvant GBM treatment. In various cancer models Enterolobium contortisiliquum Trypsin Inhibitor (EcTI) proved to have anti-cancer effects. Here, we investigated the EcTI effects on GBM U87 cells and on mesenchymal stem cells (MSC) compared to their direct coculture (MSC/U87). MSC are present in tumor stroma, modulating GBM cells phenotype, and also represent potential drug delivery vehicle due to their tumor tropism...
April 20, 2018: Oncotarget
https://www.readbyqxmd.com/read/29765039/stt3-dependent-pd-l1-accumulation-on-cancer-stem-cells-promotes-immune-evasion
#15
Jung-Mao Hsu, Weiya Xia, Yi-Hsin Hsu, Li-Chuan Chan, Wen-Hsuan Yu, Jong-Ho Cha, Chun-Te Chen, Hsin-Wei Liao, Chu-Wei Kuo, Kay-Hooi Khoo, Jennifer L Hsu, Chia-Wei Li, Seung-Oe Lim, Shih-Shin Chang, Yi-Chun Chen, Guo-Xin Ren, Mien-Chie Hung
Enriched PD-L1 expression in cancer stem-like cells (CSCs) contributes to CSC immune evasion. However, the mechanisms underlying PD-L1 enrichment in CSCs remain unclear. Here, we demonstrate that epithelial-mesenchymal transition (EMT) enriches PD-L1 in CSCs by the EMT/β-catenin/STT3/PD-L1 signaling axis, in which EMT transcriptionally induces N-glycosyltransferase STT3 through β-catenin, and subsequent STT3-dependent PD-L1 N-glycosylation stabilizes and upregulates PD-L1. The axis is also utilized by the general cancer cell population, but it has much more profound effect on CSCs as EMT induces more STT3 in CSCs than in non-CSCs...
May 15, 2018: Nature Communications
https://www.readbyqxmd.com/read/29764866/lrrc15-is-a-novel-mesenchymal-protein-and-stromal-target-for-antibody-drug-conjugates
#16
James W Purcell, Sonia G Tanlimco, Jonathan A Hickson, Melvin Fox, Mien Sho, Lisa Durkin, Tamar Uziel, Rick Powers, Kelly D Foster-Duke, Thomas McGonigal, Subashri Kumar, Josue Samayoa, Dong Zhang, Joann P Palma, Sasmita Mishra, Diane Hollenbaugh, Kurt Gish, Susan E Morgan-Lappe, Eric D Hsi, Debra T Chao
Progress in understanding tumor stromal biology has been constrained in part because cancer-associated fibroblasts (CAF) are a heterogeneous population with limited cell type-specific protein markers. Using RNA expression profiling, we identified the membrane protein leucine rich repeat containing 15 (LRRC15) as highly expressed in multiple solid tumor indications with limited normal tissue expression. LRRC15 was expressed on stromal fibroblasts in many solid tumors (e.g., breast, head and neck, lung, pancreatic) as well as directly on a subset of cancer cells of mesenchymal origin (e...
May 15, 2018: Cancer Research
https://www.readbyqxmd.com/read/29763890/mir-301a-3p-suppresses-estrogen-signaling-by-directly-inhibiting-esr1-in-er%C3%AE-positive-breast-cancer
#17
Sandra Lettlova, Veronika Brynychova, Jan Blecha, David Vrana, Magdalena Vondrusova, Pavel Soucek, Jaroslav Truksa
BACKGROUND/AIMS: MiRNA-301a-3p is an oncogenic miRNA whose expression is associated with tumor development, metastases and overall poor prognosis. Estrogen receptor α (ERα) is one of the estrogen hormone-activated transcription factors, which regulates a large number of genes and is involved in the mammary gland development. Expression of ERα is considered to be a good indicator for endocrine therapy and breast cancer survival. Loss of ERα in breast cancer patients indicates invasiveness and poor prognosis...
2018: Cellular Physiology and Biochemistry
https://www.readbyqxmd.com/read/29760738/dental-mesenchymal-stem-stromal-cells-and-their-exosomes
#18
REVIEW
Peter Stanko, Ursula Altanerova, Jana Jakubechova, Vanda Repiska, Cestmir Altaner
Stem cells derived from human dental pulp tissue (DP-MSC) differ from the other mesenchymal stem cells prepared from bone marrow or adipose tissue due to their embryonic origin from the neural crest and are of special interest because of their neurotropic character. Furthermore, the therapeutic potential of DP-MSCs is realized through paracrine action of extracellularly released components, for which exosomes play an important role. In this review, we intend to explore the properties of these cells with an emphasis on exosomes...
2018: Stem Cells International
https://www.readbyqxmd.com/read/29760719/ifn-%C3%AE-expressing-amniotic-fluid-derived-mesenchymal-stem-cells-migrate-to-and-suppress-hela-cell-derived-tumors-in-a-mouse-model
#19
Jun Zhou, Tian Liang, Dejun Wang, Liru Li, Yan Cheng, Qiuyan Guo, Guangmei Zhang
Background: Immunotherapy for cervical cancer with type I interferon (IFN) is limited because of the cytotoxicity that accompanies the high doses that are administered. In this study, we investigated the utilization of amniotic fluid-derived mesenchymal stem cells (AF-MSCs) as a means for delivering IFN α to local tumor sites for the suppression of cervical cancer in a mouse model using HeLa cell xenografts. Methods: The tumor tropism ability of AF-MSCs and AF-MSCs genetically modified to overexpress IFN α (IFN α -AF-MSCs) was examined through Transwell in vitro and through fluorescent images and immunohistochemistry in a mouse model...
2018: Stem Cells International
https://www.readbyqxmd.com/read/29754422/zeb1-mediated-vasculogenic-mimicry-formation-associates-with-epithelial-mesenchymal-transition-and-cancer-stem-cell-phenotypes-in-prostate-cancer
#20
Hua Wang, Bin Huang, Bai Mou Li, Kai Yuan Cao, Chen Qiang Mo, Shuang Jian Jiang, Jin Cheng Pan, Zong Ren Wang, Huan Yi Lin, Dao Hu Wang, Shao Peng Qiu
The zinc finger E-box-binding homeobox 1 (ZEB1) induced the epithelial-mesenchymal transition (EMT) and altered ZEB1 expression could lead to aggressive and cancer stem cell (CSC) phenotypes in various cancers. Tissue specimens from 96 prostate cancer patients were collected for immunohistochemistry and CD34/periodic acid-Schiff double staining. Prostate cancer cells were subjected to ZEB1 knockdown or overexpression and assessment of the effects on vasculogenic mimicry formation in vitro and in vivo. The underlying molecular events of ZEB1-induced vasculogenic mimicry formation in prostate cancer were then explored...
May 12, 2018: Journal of Cellular and Molecular Medicine
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