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https://www.readbyqxmd.com/read/28526750/pdgf-controls-contact-inhibition-of-locomotion-by-regulating-n-cadherin-during-neural-crest-migration
#1
Isabel Bahm, Elias H Barriga, Antonina Frolov, Eric Theveneau, Paul Frankel, Roberto Mayor
A fundamental property of neural crest (NC) migration is Contact inhibition of locomotion (CIL), a process by which cells change their direction of migration upon cell contact. CIL has been proven to be essential for NC migration in amphibian and zebrafish by controlling cell polarity in a cell contact dependent manner. Cell contact during CIL requires the participation of the cell adhesion molecule N-cadherin, which starts to be expressed by NC cells as a consequence of the switch between E- and N-cadherins during epithelial to mesenchymal transition (EMT)...
May 19, 2017: Development
https://www.readbyqxmd.com/read/28523251/bone-marker-gene-expression-in-calvarial-bones-different-bone-microenvironments
#2
Osama Al-Amer
BACKGROUND: In calvarial mice, mesenchymal stem cells (MSCs) differentiate into osteoprogenitor cells and then differentiate into osteoblasts that differentiate into osteocytes, which become embedded within the bone matrix. In this case, the cells participating in bone formation include MSCs, osteoprogenitor cells, osteoblasts and osteocytes. The calvariae of C57BL/KaLwRijHsD mice consist of the following five bones: two frontal bones, two parietal bones and one interparietal bone. This study aimed to analyse some bone marker genes and bone related genes to determine whether these calvarial bones have different bone microenvironments...
December 2017: Journal of Biological Research
https://www.readbyqxmd.com/read/28521486/fibronectin-induces-epithelial-mesenchymal-transition-in-human-breast-cancer-mcf-7-cells-via-activation-of-calpain
#3
Cheng-Lin Li, Dan Yang, Xin Cao, Fan Wang, Duan-Yang Hong, Jing Wang, Xiang-Chun Shen, Yan Chen
Fibronectin (FN) is a primary component of the mammary mesenchymal compartment and undergoes dramatic changes during breast cancer development. Increased FN expression is associated with an invasive and metastatic breast cancer phenotype. The present study demonstrated that FN causes an epithelial-mesenchymal transition (EMT)-like morphological change in MCF-7 breast cancer cells. FN stimulation caused the downregulation of epithelial markers E-cadherin and tight junction protein ZO-1, and the upregulation of mesenchymal markers N-cadherin and vimentin...
May 2017: Oncology Letters
https://www.readbyqxmd.com/read/28521038/ventricular-zone-disruption-in-human-neonates-with-intraventricular-hemorrhage
#4
James P McAllister, Maria Montserrat Guerra, Leandro Castaneyra Ruiz, Antonio J Jimenez, Dolores Dominguez-Pinos, Deborah Sival, Wilfred den Dunnen, Diego M Morales, Robert E Schmidt, Esteban M Rodriguez, David D Limbrick
To determine if ventricular zone (VZ) and subventricular zone (SVZ) alterations are associated with intraventricular hemorrhage (IVH) and posthemorrhagic hydrocephalus, we compared postmortem frontal and subcortical brain samples from 12 infants with IVH and 3 nonneurological disease controls without hemorrhages or ventriculomegaly. Birth and expiration estimated gestational ages were 23.0-39.1 and 23.7-44.1 weeks, respectively; survival ranges were 0-42 days (median, 2.0 days). Routine histology and immunohistochemistry for neural stem cells (NSCs), neural progenitors (NPs), multiciliated ependymal cells (ECs), astrocytes (AS), and cell adhesion molecules were performed...
May 1, 2017: Journal of Neuropathology and Experimental Neurology
https://www.readbyqxmd.com/read/28518143/calcium-sensing-receptor-protects-high-glucose-induced-energy-metabolism-disorder-via-blocking-gp78-ubiquitin-proteasome-pathway
#5
Yuehong Wang, Ping Gao, Can Wei, Hongzhu Li, Li Zhang, Yajun Zhao, Bo Wu, Ye Tian, Weihua Zhang, Lingyun Wu, Rui Wang, Changqing Xu
Diabetic cardiomyopathy (DCM) is a major complication and fatal cause of the patients with diabetes. The calcium sensing receptor (CaSR) is a G protein-coupled receptor, which is involved in maintaining calcium homeostasis, regulating cell proliferation and apoptosis, and so on. In our previous study, we found that CaSR expression, intracellular calcium levels and cardiac function were all significantly decreased in DCM rats; however, the exact mechanism are not clear yet. The present study revealed the protective role of CaSR in myocardial energy metabolism disorder induced by high glucose (HG) as well as the underlying mechanism...
May 18, 2017: Cell Death & Disease
https://www.readbyqxmd.com/read/28508744/overexpression-of-human-papillomavirus-type-16-oncoproteins-enhances-epithelial-mesenchymal-transition-via-stat3-signaling-pathway-in-non-small-cell-lung-cancer-cells
#6
Wenzhang Zhang, Xin Wu, Liang Hu, Yuefan Ma, Zihan Xiu, Bingyu Huang, Yun Feng, Xudong Tang
Human papillomavirus (HPV) infection may be associated with the development and progression of non-small cell lung cancer (NSCLC). However, the role of HPV-16 oncoproteins in the development and progression of NSCLC is not completely clear. Epithelial-mesenchymal transition (EMT), a crucial step for invasion and metastasis, plays a key role in the development and progression of NSCLC. Here, we explored the effect of HPV-16 oncoproteins on EMT and the underlying mechanisms. NSCLC cell lines, A549 and NCI-H460, were transiently transfected with EGFP-N1-HPV-16 E6 or E7 plasmid...
December 15, 2016: Oncology Research
https://www.readbyqxmd.com/read/28507985/control-of-neuronal-migration-and-aggregation-by-reelin-signaling-in-the-developing-cerebral-cortex
#7
REVIEW
Yuki Hirota, Kazunori Nakajima
The mammalian cerebral neocortex has a well-organized laminar structure, achieved by the highly coordinated control of neuronal migration. During cortical development, excitatory neurons born near the lateral ventricle migrate radially to reach their final positions to form the cortical plate. During this process, dynamic changes are observed in the morphologies and migration modes, including multipolar migration, locomotion, and terminal translocation, of the newborn neurons. Disruption of these migration processes can result in neuronal disorders such as lissencephaly and periventricular heterotopia...
2017: Frontiers in Cell and Developmental Biology
https://www.readbyqxmd.com/read/28503305/three-dimensional-conjugation-of-recombinant-n-cadherin-to-a-hydrogel-for-in-vitro-anisotropic-neural-growth
#8
Johana C M Vega L, Min Kyung Lee, Ellen C Qin, Max Rich, Kwan Young Lee, Dong Hyun Kim, Hee Jung Chung, Deborah E Leckband, Hyunjoon Kong
Living cells are extensively being studied to build functional tissues that are useful for both fundamental and applied bioscience studies. Increasing evidence suggests that cell-cell adhesion controlled by intercellular cadherin junction plays important roles in the quality of the resulting engineered tissue. These findings prompted efforts to interrogate biological effects of cadherin at a molecular scale; however, few efforts were made to harness the effects of cadherin on cells cultured in an in vivo-like three dimensional matrix...
November 14, 2016: Journal of Materials Chemistry. B, Materials for Biology and Medicine
https://www.readbyqxmd.com/read/28501849/mir-551b-regulates-epithelial-mesenchymal-transition-and-metastasis-of-gastric-cancer-by-inhibiting-erbb4-expression
#9
Guangyuan Song, Hongcheng Zhang, Chenlin Chen, Lijie Gong, Biao Chen, Shaoyun Zhao, Ji Shi, Ji Xu, Zaiyuan Ye
Epithelial-mesenchymal transition (EMT) is an important biological process that is characteristic of malignant tumor cells with metastatic potential. We investigated the role of miR-551b in EMT and metastasis in gastric cancer (GC). We found that low miR-551b levels were associated with EMT, metastasis and a poor prognosis in GC patients. Further, two GC cell lines, MNK45 and SGC7901, exhibited lower miR-551b levels than the GES normal stomach cell line. Exposing MNK45 and SGC7901 cells to TGF-β1 resulted in cell morphology changes characteristic of EMT, which was confirmed by western blot analysis demonstrating low E-Cadherin and high N-Cadherin and Vimentin levels...
April 24, 2017: Oncotarget
https://www.readbyqxmd.com/read/28499884/inhibition-of-ubiquitin-specific-protease-34-usp34-induces-epithelial-mesenchymal-transition-and-promotes-stemness-in-mammary-epithelial-cells
#10
Eunhye Oh, Ji Young Kim, Daeil Sung, Youngkwan Cho, Nahyun Lee, Hyunsook An, Yoon-Jae Kim, Tae-Min Cho, Jae Hong Seo
Ubiquitin-specific protease 34 (USP34) is a deubiquitinating enzyme that regulates Axin stability and plays a critical role in Wnt/β-catenin signaling. We sought to investigate the role of USP34 on epithelial-mesenchymal (EMT) induction and its effects on mammary epithelial stem cells. USP34 expression levels were relatively lower in MDA-MB-231 and 4T1 mesenchymal-like cells when compared to epithelial-like cells. Inhibition of USP34 in NMuMG cells induced EMT, as evidenced by the upregulation of EMT markers including N-cadherin, phospho-Smad3, Snail and active-β-catenin, as well as the downregulation of Axin 1 and E-cadherin...
May 10, 2017: Cellular Signalling
https://www.readbyqxmd.com/read/28499854/curcumin-loading-potentiates-the-chemotherapeutic-efficacy-of-selenium-nanoparticles-in-hct116-cells-and-ehrlich-s-ascites-carcinoma-bearing-mice
#11
Manisha Kumari, L Ray, M P Purohit, S Patnaik, A B Pant, Y Shukla, P Kumar, K C Gupta
The anticancer properties of selenium (Se) and curcumin nanoparticles in solo formulations as well as in combination with other therapeutic agents have been proved time and again. Exploiting this facet of the two, we clubbed their tumoricidal characteristics and designed curcumin loaded Se nanoparticles (Se-CurNPs) to achieve an enhanced therapeutic effect. We evaluated their therapeutic effects on different cancer cell lines and Ehrlich's ascites carcinoma mouse model. In vitro results showed that Se-CurNPs were most effective on colorectal carcinoma cells (HCT116) compared to the other cancer cell lines used and possessed pleiotropic anticancer effects...
May 9, 2017: European Journal of Pharmaceutics and Biopharmaceutics
https://www.readbyqxmd.com/read/28498492/multiple-roles-of-afadin-in-the-ultrastructural-morphogenesis-of-mouse-hippocampal-mossy-fiber-synapses
#12
Kousyoku Sai, Shujie Wang, Aika Kaito, Takeshi Fujiwara, Tomohiko Maruo, Yu Itoh, Muneaki Miyata, Shotaro Sakakibara, Naoyuki Miyazaki, Kazuyoshi Murata, Yuuki Yamaguchi, Tomohiro Haruta, Hideo Nishioka, Yuki Motojima, Miyuki Komura, Kazushi Kimura, Kenji Mandai, Yoshimi Takai, Akira Mizoguchi
A hippocampal mossy fiber synapse, which is implicated in learning and memory, has a complex structure in which mossy fiber boutons attach to the dendritic shaft by puncta adherentia junctions (PAJs) and wrap around a multiply-branched spine, forming synaptic junctions. Here, we electron microscopically analyzed the ultrastructure of this synapse in afadin-deficient mice. Transmission electron microscopy analysis revealed that typical PAJs with prominent symmetrical plasma membrane darkening undercoated with the thick filamentous cytoskeleton were observed in the control synapse, whereas in the afadin-deficient synapse, atypical PAJs with the symmetrical plasma membrane darkening, which was much less in thickness and darkness than those of the control typical PAJs, were observed...
May 12, 2017: Journal of Comparative Neurology
https://www.readbyqxmd.com/read/28496342/sialylation-facilitates-self-assembly-of-3d-multicellular-prostaspheres-by-using-cyclo-rgdfk-tpp-peptide
#13
Sabah Haq, Vanessa Samuel, Fiona Haxho, Roman Akasov, Maria Leko, Sergey V Burov, Elena Markvicheva, Myron R Szewczuk
BACKGROUND: Prostaspheres-based three dimensional (3D) culture models have provided insight into prostate cancer (PCa) biology, highlighting the importance of cell-cell interactions and the extracellular matrix (EMC) in the tumor microenvironment. Although these 3D classical spheroid platforms provide a significant advance over 2D models mimicking in vivo tumors, the limitations involve no control of assembly and structure with only limited spatial or glandular organization. Here, matrix-free prostaspheres from human metastatic prostate carcinoma PC3 and DU145 cell lines and their respective gemcitabine resistant (GemR) variants were generated by using cyclic Arg-Gly-Asp-D-Phe-Lys peptide modified with 4-carboxybutyl-triphenylphosphonium bromide (cyclo-RGDfK(TPP))...
2017: OncoTargets and Therapy
https://www.readbyqxmd.com/read/28495851/different-macrophages-equally-induce-emt-in-endometria-of-adenomyosis-and-normal
#14
Min An, Dong Li, Ming Yuan, Qiuju Li, Lu Zhang, Guo Yun Wang
Endometrial cells and microenvironment are two important factors in the pathogenesis of adenomyosis. Our previous study demonstrated that macrophages can induce eutopic epithelial cells of adenomyosis suffering from epithelial-mesenchymal transition (EMT). The aim of this study is to detect whether macrophages interacting with epithelial cells equally induce the EMT process in normal and eutopic endometria of healthy and adenomyotic patients; and macrophages parallelly polarize to M2. We investigated expressions of epithelial cadherin (E-cadherin), neural cadherin (N-cadherin), cytokeratin7 (CK7), vimentin, transforming growth factor-β1 (TGFB1), SMAD3 and pSMAD3 using Immunohistochemistry and Western Blot, then estimated genetic levels of CD163, IL10 and MMP12 using real-time quantitative polymerase chain reaction (RT-PCR) in macrophages...
May 11, 2017: Reproduction: the Official Journal of the Society for the Study of Fertility
https://www.readbyqxmd.com/read/28494700/invasive-front-grading-and-epithelial-mesenchymal-transition-in-canine-oral-and-cutaneous-squamous-cell-carcinomas
#15
E Nagamine, K Hirayama, K Matsuda, M Okamoto, T Ohmachi, K Uchida, T Kadosawa, H Taniyama
Oral and cutaneous tissues are the most frequent origin in canine squamous cell carcinoma (SSC). In SCC, changes in adhesion molecule expression and transition from epithelial to mesenchymal phenotype are thought to be important in development of invasive behavior of neoplastic cells at the leading front of the tumor. We therefore investigated histological invasive front grading and epithelial-mesenchymal transition (EMT) in both oral SCCs and cutaneous SCCs. EMT was assessed by evaluating immunohistochemical expression of E-cadherin, β-catenin, desmoglein, vimentin, and N-cadherin...
January 1, 2017: Veterinary Pathology
https://www.readbyqxmd.com/read/28494434/p-cadherin-is-necessary-for-retinal-stem-cell-behavior-in-vitro-but-not-in-vivo
#16
Brenda L K Coles, Derek van der Kooy
Adult retinal stem cells (RSCs) are rare quiescent cells within the ciliary epithelium of the eye, which is made up of non-pigmented N-Cadherin(+ve) inner and pigmented P-Cadherin(+ve) outer cell layers. Through FACs and single cell analyses, we have shown that RSCs arise from single cells from within the pigmented CE and express P-Cadherin. However, whether the expression of P-Cadherin is required for maintenance of the stem cell in vivo or in the formation of the clonal stem cell spheres in vitro is not known...
May 3, 2017: Stem Cell Research
https://www.readbyqxmd.com/read/28494348/withaferin-a-inhibits-prostate-carcinogenesis-in-a-pten-deficient-mouse-model-of-prostate-cancer
#17
Jim Moselhy, Suman Suman, Mohammed Alghamdi, Balaji Chandarasekharan, Trinath P Das, Alatassi Houda, Murali Ankem, Chendil Damodaran
We recently demonstrated that AKT activation plays a role in prostate cancer progression and inhibits the pro-apoptotic function of FOXO3a and Par-4. AKT inhibition and Par-4 induction suppressed prostate cancer progression in preclinical models. Here, we investigate the chemopreventive effect of the phytonutrient Withaferin A (WA) on AKT-driven prostate tumorigenesis in a Pten conditional knockout (Pten-KO) mouse model of prostate cancer. Oral WA treatment was carried out at two different doses (3 and 5 mg/kg) and compared to vehicle over 45 weeks...
May 7, 2017: Neoplasia: An International Journal for Oncology Research
https://www.readbyqxmd.com/read/28493830/ing5-knockdown-enhances-migration-and-invasion-of-lung-cancer-cells-by-inducing-emt-via-egfr-pi3k-akt-and-il-6-stat3-signaling-pathways
#18
Xin-Li Liu, Xu-Tao Zhang, Jin Meng, Hong-Fei Zhang, Yong Zhao, Chen Li, Yang Sun, Qi-Bing Mei, Feng Zhang, Tao Zhang
ING5 belongs to the Inhibitor of Growth (ING) candidate tumor suppressor family, whose functions have been involved in the regulation of chromatin remodeling, cell cycle progression, proliferation and apoptosis. Our previous study has shown that ING5 overexpression inhibits lung cancer aggressiveness via suppressing epithelial to mesenchymal transition (EMT). However, the mechanisms remain largely unknown. In the current study, by Phospho-Kinase array and western blot, we have defined significantly upregulated EGFR/PI3K/Akt and IL-6/STAT3 oncogenic signaling pathways in ING5 knockdown A549 cells, which could be downregulated by ING5 overexpression...
April 21, 2017: Oncotarget
https://www.readbyqxmd.com/read/28488774/fscn1-is-upregulated-by-snai2-and-promotes-epithelial-to-mesenchymal-transition-in-head-and-necksquamous-cell-carcinoma
#19
Lei Wang, YaoPeng Jia, ZengYu Jiang, Wei Gao, BinQuan Wang
In this study, we investigated whether there is any association between the expression of FSCN1 and SNAI2and the possible underlying mechanisms in head and neck squamous cell carcinoma (HNSC). In addition, we also investigated whether FSCN1 modulates epithelial to mesenchymal transition (EMT) in HNSC cells. Microarray data of dysregulated genes in HNSC was searched in GEO datasets. The association between FSCN1 expression and the 5-year/10-year overall survival (OS), as well as the correlation between the expression of FSCN1 and SOX2, MYBL2, SNAI2, STAT1 and SOX4 were analyzed based on data in TCGA HNSC cohort (TCGA-HNSC)...
May 10, 2017: Cell Biology International
https://www.readbyqxmd.com/read/28474787/cadherin-interplay-during-neural-crest-segregation-from-the-non-neural-ectoderm-and-neural-tube-in-the-early-chick-embryo
#20
Alwyn Dady, Jean-Loup Duband
BACKGROUND: In the avian embryo, neural crest (NC) progenitors arise in the neuroectoderm during gastrulation, long before their dissemination. Although the gene regulatory network involved in NC specification has been deciphered, the mechanisms involved in their segregation from the other neuroectoderm-derived progenitors, notably the epidermis and neural tube, are unknown. Because cadherins mediate cell recognition and sorting, we scrutinized their expression profiles during NC specification and delamination...
May 5, 2017: Developmental Dynamics: An Official Publication of the American Association of Anatomists
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