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https://www.readbyqxmd.com/read/29040749/cdc42-regulates-the-cellular-localization-of-cdc42ep1-in-controlling-neural-crest-cell-migration
#1
Cohen Shlomi, Daniel T Kovari, Wenbin Wei, Rebecca Keate, Jennifer E Curtis, Shuyi Nie
The member of Rho family of small GTPases Cdc42 plays important and conserved roles in cell polarity and motility. The Cdc42ep family proteins have been identified to bind to Cdc42, yet how they interact with Cdc42 to regulate cell migration remains to be elucidated. In this study, we focus on Cdc42ep1, which is expressed predominantly in the highly migratory neural crest cells in frog embryos. Through morpholino-mediated knockdown, we show that Cdc42ep1 is required for the migration of cranial neural crest cells...
October 6, 2017: Journal of Molecular Cell Biology
https://www.readbyqxmd.com/read/29035824/knockdown-of-diaph1-expression-inhibits-migration-and-decreases-the-expression-of-mmp2-and-mmp9-in-human-glioma-cells
#2
Can Zhang, Lin Wang, Jiaying Chen, Jie Liang, Yaming Xu, Zhe Li, Fuxue Chen, Dongshu Du
As the most common primary central nervous system tumor, glioma is characterized by high levels of mortality and migration. Unclear boundary with normal brain tissue results in poor treatment. The mammalian diaphanous-related formin 1 (Diaph1) which belongs to formin-homology protein family, is a target of RhoA and involved in a number of actin-related biological processes, which abnormally expressed in pathological conditions in a number of tumors. Immunohistochemical analysis showed that Diaph1 was overexpressed in glioma tissues compared with normal human brain tissue...
October 12, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/29035583/resveratrol-suppresses-growth-and-migration-of-myelodysplastic-cells-by-inhibiting-the-expression-of-elevated-cyclin-d1-ccnd1
#3
Wei Zhou, Shilin Xu, Yi Ying, Ruiqing Zhou, Xiaowei Chen
Myelodysplastic syndromes (MDS) are a group of heterogeneous diseases characterized by poorly formed blood cells. We wanted to elucidate the underlying molecular mechanism to better determine pathogenesis, prognosis, diagnosis, and treatment for patients with MDS. We compared gene expression levels between normal and MDS tissue samples by immunohistochemical analysis. We studied the proliferation, survival, and migration of MDS cells using the EDU assay, colony formation, and transwell assays. We assessed the apoptotic rate and cell cycle status using flow cytometry and Hoechst staining...
October 16, 2017: DNA and Cell Biology
https://www.readbyqxmd.com/read/29032338/an-analysis-of-suppressing-migratory-effect-on-human-urinary-bladder-cancer-cell-line-by-silencing-of-snail-1
#4
Shima Salehi, Behzad Mansoori, Ali Mohammadi, Sadaf Davoudian, Seyed Mohammad Hossein Musavi Shenas, Neda Shajari, Jafar Majidi, Behzad Baradaran
BACKGROUND: Snail-1 actively participates in tumor progression, invasion, and migration. Targeting snail-1 expression can suppress the EMT process in cancer. The aim of this study was to investigate the effect of snail1 silencing on urinary bladder cancer. METHODS: Quantitative RT-PCR was used to detect snail-1 and other related metastatic genes expression following siRNA knockdown in urinary bladder cancer EJ-138 cells. The protein level of snail1 was assessed by Western blot...
October 12, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/29031103/kaposi-s-sarcoma-herpesvirus-induced-endothelial-cell-reprogramming-supports-viral-persistence-and-contributes-to-kaposi-s-sarcoma-tumorigenesis
#5
REVIEW
Silvia Gramolelli, Päivi M Ojala
Kaposi's sarcoma (KS) is an endothelial tumor causally linked to Kaposi's sarcoma herpesvirus (KSHV) infection. At early stages of KS, inflammation and aberrant neoangiogenesis are predominant, while at late stages the disease is characterized by the proliferation of KSHV-infected spindle cells (SC). Since KSHV infection modifies the endothelial cell (EC) identity, the origin of SCs remains elusive. Yet, pieces of evidence indicate the lymphatic origin. KSHV-infected ECs display increased proliferative, angiogenic and migratory capacities which account for KS oncogenesis...
October 11, 2017: Current Opinion in Virology
https://www.readbyqxmd.com/read/29030587/natd-promotes-lung-cancer-progression-by-preventing-histone-h4-serine-phosphorylation-to-activate-slug-expression
#6
Junyi Ju, Aiping Chen, Yexuan Deng, Ming Liu, Ying Wang, Yadong Wang, Min Nie, Chao Wang, Hong Ding, Bing Yao, Tao Gui, Xinyu Li, Zhen Xu, Chi Ma, Yong Song, Marc Kvansakul, Ke Zen, Chen-Yu Zhang, Cheng Luo, Ming Fang, David C S Huang, C David Allis, Renxiang Tan, Changjiang Kathy Zeng, Jiwu Wei, Quan Zhao
N-α-acetyltransferase D (NatD) mediates N-α-terminal acetylation (Nt-acetylation) of histone H4 known to be involved in cell growth. Here we report that NatD promotes the migratory and invasive capabilities of lung cancer cells in vitro and in vivo. Depletion of NatD suppresses the epithelial-to-mesenchymal transition (EMT) of lung cancer cells by directly repressing the expression of transcription factor Slug, a key regulator of EMT. We found that Nt-acetylation of histone H4 antagonizes histone H4 serine 1 phosphorylation (H4S1ph), and that downregulation of Nt-acetylation of histone H4 facilitates CK2α binding to histone H4 in lung cancer cells, resulting in increased H4S1ph and epigenetic reprogramming to suppress Slug transcription to inhibit EMT...
October 13, 2017: Nature Communications
https://www.readbyqxmd.com/read/29030097/transient-vimentin-expression-during-the-embryonic-development-of-the-chicken-cerebellum
#7
Vasiliki Kommata, Catherine R Dermon
Complex morphogenetic events, critical for the development of normal cerebellum foliation and layering, are known to involve type III intermediate filament protein such as vimentin expressed by Bergmann glia. The present study aimed to determine aspects of intermediate and late embryonic pattern of vimentin expression during the corticogenesis of chicken cerebellum at embryonic days 10 to 19 (E10-E19), using single and double immunohistochemistry/immunofluorescence. Vimentin expression showed partial co-localization with the glial markers GFAP and BLBP...
October 10, 2017: International Journal of Developmental Neuroscience
https://www.readbyqxmd.com/read/29030089/knockdown-of-hif-1%C3%AE-inhibits-the-proliferation-and-migration-of-outer-root-sheath-cells-exposed-to-hypoxia-in-vitro-an-involvement-of-shh-pathway
#8
Haihua Zhang, Weixiao Nan, Xingchao Song, Shiyong Wang, Huazhe Si, Guangyu Li
AIMS: Outer root sheath (ORS) is a highly proliferative component of a hair follicle. This study is performed to investigate whether hypoxia-induced elevation of hypoxia-inducible factor (HIF)-1α, a transcriptional activator, contributes to the outgrowth of ORS cells in vitro. MAIN METHODS: Hair follicles with intact ORS collected from 4-month old male American minks were cultured in normoxic or hypoxic condition (3% oxygen) for 7days. Primary ORS cells isolated from the mink hair follicles were exposed to hypoxia for 12, 24 or 48h, and their proliferation was analyzed with immunofluorescence assay using anti-proliferating cell nuclear antigen (PCNA) antibody...
October 10, 2017: Life Sciences
https://www.readbyqxmd.com/read/29029509/establishment-of-oral-squamous-cell-carcinoma-cell-line-and-magnetic-bead-based-isolation-and-characterization-of-its-cd90-cd44-subpopulations
#9
Marketa Svobodova, Martina Raudenska, Jaromir Gumulec, Jan Balvan, Michaela Fojtu, Monika Kratochvilova, Hana Polanska, Zuzana Horakova, Rom Kostrica, Petr Babula, Zbynek Heger, Michal Masarik
In this study, we describe the establishment of the human papillomavirus 18-positive, stage II, grade 1, T2N0M0 head and neck tumor primary cell line derived from oral squamous cell carcinoma of a non-smoking patient by using two different protocols. Furthermore, a preparation of subpopulations derived from this primary cell line according to the cluster of differentiation molecules CD44/CD90 status using magnetic bead-based separation and their characterization was performed. Impedance-based real-time cell analysis, enzyme-linked immunsorbant assay (ELISA), wound-healing assay, flow-cytometry, gene expression analysis, and MTT assay were used to characterize these four subpopulations (CD44(+)/CD90(-), CD44(-)/CD90(-), CD44(+)/CD90(+), CD44(-)/CD90(-))...
September 12, 2017: Oncotarget
https://www.readbyqxmd.com/read/29028806/a-novel-immunotoxin-reveals-a-new-role-for-cd321-in-endothelial-cells
#10
Takeshi Fukuhara, Jia Kim, Shintaro Hokaiwado, Makiko Nawa, Hayato Okamoto, Tomohiko Kogiso, Tetsuro Watabe, Nobutaka Hattori
There are currently several antibody therapies that directly target tumors, and antibody-drug conjugates represent a novel moiety as next generation therapeutics. Here, we used a unique screening probe, DT3C, to identify functional antibodies that recognized surface molecules and functional epitopes, and which provided toxin delivery capability. Accordingly, we generated the 90G4 antibody, which induced DT3C-dependent cytotoxicity in endothelial cells. Molecular analysis revealed that 90G4 recognized CD321, a protein localized at tight junctions...
2017: PloS One
https://www.readbyqxmd.com/read/29028549/mta-promotes-chemotaxis-and-chemokinesis-of-immune-cells-through-distinct-calcium-sensing-receptor-signaling-pathways
#11
Fengjiao Chang, Jin Man Kim, Youngnim Choi, Kyungpyo Park
Mineral trioxide aggregate (MTA) has been introduced as a choice material for regenerative dentistry. To date, the diverse biological activities of MTA, including its anti-inflammatory effects, have been extensively discussed. However, there is limited insight into the link between MTA and immune cell migration. In this study, we report the role of MTA in enhancing both chemotactic and chemokinetic immune cell migration through distinct signaling pathways. By using versatile live imaging techniques, we demonstrated that MTA-mediated CaSR activation induced diverse downstream pathways to govern cell migratory capacity...
October 4, 2017: Biomaterials
https://www.readbyqxmd.com/read/29026158/ginsenoside-rb1-prevents-homocysteine-induced-epc-dysfunction-via-vegf-p38mapk-and-sdf-1-cxcr4-activation
#12
Tao-Hua Lan, Dan-Ping Xu, Man-Ting Huang, Ju-Xian Song, Huan-Lin Wu, Min Li
Hyperhomocystinemia (HHcy) is known as an independent risk factor for cardiovascular disease. Our previous study showed that ginsenoside Rb1, the major active constituent of ginseng, prevents homocysteine (Hcy)-induced endothelial damage. However, the role of ginsenoside Rb1 in Hcy-induced dysfunction in endothelial progenitor cells (EPCs) remains unknown. In the study, we found that ginsenoside Rb1 reversed the Hcy-induced impairment of adhesive and migratory ability in EPCs which were significantly abolished by CXCR4 antagonist AMD3100 and VEGFR2 inhibitor SU5416...
October 12, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29024700/high-ybx1-expression-indicates-poor-prognosis-and-promotes-cell-migration-and-invasion-in-nasopharyngeal-carcinoma
#13
Lei-Lei Zhou, Jie Ni, Wan-Ting Feng, Rong Yao, Shun Yue, Ya-Ning Zhu, Hai-Yan Tang, Ling-Yun Lv, Ji-Feng Feng, Wei-Guo Zhu
Y-box binding protein-1 (YBX1) is a multifunctional protein and often acts as an indicator of poor prognosis in cancers. Increasing evidence has shown that the levels of YBX1 protein were closely associated with multidrug resistance, relapse, metastasis and poor prognosis in cancers. However, its role in nasopharyngeal carcinoma (NPC) metastasis remains unknown. In our study, we discovered that the expression of YBX1 was increased in nasopharyngeal carcinoma tissues. YBX1 protein levels positively correlated with T stage and metastasis of NPC patients...
October 9, 2017: Experimental Cell Research
https://www.readbyqxmd.com/read/29023947/genetic-characterization-of-an-avian-h4n6-influenza-virus-isolated-from-the-izumi-plain-japan
#14
Kosuke Okuya, Norihiro Kanazawa, Takehiro Kanda, Masakazu Kuwahara, Aya Matsuu, Masayuki Horie, Tatsunori Masatani, Shigehisa Toda, Makoto Ozawa
An influenza A virus of H4N6 subtype was isolated from the Izumi plain, Japan, in 2013. Genetic analyses revealed that two viral genes (M and NS gene segments) of this isolate were genetically distinct from those of the H4N6 virus isolated from the same place in 2012. Furthermore, three viral genes (PB2, PB1, and M gene segments) of our isolate share high similarity with those of the North American isolates of 2014. These results suggest a high frequency of the genetic reassortment of avian influenza viruses in Asian waterfowl and intercontinental movements of avian influenza viruses via migratory waterfowl...
October 12, 2017: Microbiology and Immunology
https://www.readbyqxmd.com/read/29023699/using-host-species-traits-to-understand-the-consequences-of-resource-provisioning-for-host-parasite-interactions
#15
Daniel J Becker, Daniel G Streicker, Sonia Altizer
1.Supplemental food provided to wildlife by human activities can be more abundant and predictable than natural resources, and subsequent changes to wildlife ecology can have profound impacts on host-parasite interactions. Identifying traits of species associated with increases or decreases in infection outcomes with resource provisioning could improve assessments of wildlife most prone to disease risks in changing environments. 2.We conducted a phylogenetic meta-analysis of 342 host-parasite interactions across 56 wildlife species and three broad taxonomic groups of parasites to identify host-level traits that influence whether provisioning is associated with increases or decreases in infection...
October 10, 2017: Journal of Animal Ecology
https://www.readbyqxmd.com/read/29022829/migratory-white-stork-ciconia-ciconia-a-potential-vector-of-the-oxa-48-producing-escherichia-coli-st38-clone-in-algeria
#16
Amira Bouaziz, Lotfi Loucif, Ammar Ayachi, Karima Guehaz, Esma Bendjama, Jean-Marc Rolain
The emergence of carbapenemase-producing Enterobacteriaceae is of great concern to public health worldwide. The aim of this study was to screen for the presence of carbapenemase-producing Enterobacteriaceae in white stork (Ciconia ciconia) migratory bird stools, and to investigate their molecular support on β-lactamase production. In March 2015, 32 fecal samples of white stork were collected in the Commune of El Madher Wilaya de Batna, in eastern Algeria. Samples were subjected to selective isolation of carbapenem-resistant Enterobacteriaceae...
October 12, 2017: Microbial Drug Resistance: MDR: Mechanisms, Epidemiology, and Disease
https://www.readbyqxmd.com/read/29022351/the-role-of-vimentin-in-regulating-cell-invasive-migration-in-dense-cultures-of-breast-carcinoma-cells
#17
Yonatan Messica, Adi Laser-Azogui, Tova Volberg, Yair Elisha, Kseniia Lysakovskaia, Roland Eils, Evgeny Gladilin, Benjamin Geiger, Roy Beck
Cell migration and mechanics are tightly regulated by the integrated activities of the various cytoskeletal networks. In cancer cells, cytoskeletal modulations have been implicated in the loss of tissue integrity and acquisition of an invasive phenotype. In epithelial cancers, for example, increased expression of the cytoskeletal filament protein vimentin correlates with metastatic potential. Nonetheless, the exact mechanism whereby vimentin affects cell motility remains poorly understood. In this study, we measured the effects of vimentin expression on the mechano-elastic and migratory properties of the highly invasive breast carcinoma cell line MDA231...
October 17, 2017: Nano Letters
https://www.readbyqxmd.com/read/29021659/occult-renal-cell-carcinoma-presenting-as-carcinomatous-polyarthritis
#18
Mansoor C Abdulla, Ram Narayan, Hazwa K Hamza
Carcinomatous polyarthritis (CP) is a rare paraneoplastic disorder which can be associated with various solid tumors and can even precede detection of the underlying malignancy. A 54-year-old male presented with migratory asymmetric inflammatory polyarthritis and high-grade fever for 6 months. On evaluation, he was diagnosed to have renal cell carcinoma (RCC). CP as an initial presentation of RCC was not described previously.
October 2017: Indian Journal of Urology: IJU: Journal of the Urological Society of India
https://www.readbyqxmd.com/read/29021341/acquisition-of-cell-migration-defines-nk-cell-differentiation-from-hematopoietic-stem-cell-precursors
#19
Barclay J Lee, Emily M Mace
Human natural killer (NK) cells are generated from CD34(+) precursors and can be differentiated in vitro by co-culture with developmentally supportive stromal cells. We have previously described the acquisition of cell migration as a feature of NK cell terminal maturation in this system. Here, we perform continuous long-term imaging and tracking of NK cell progenitors undergoing in vitro differentiation. We demonstrate that NK cell precursors can be tracked over long time periods on the order of weeks by utilizing phase-contrast microscopy, and show that these cells acquire increasing motility as they mature...
October 11, 2017: Molecular Biology of the Cell
https://www.readbyqxmd.com/read/29021139/paxillin-binding-to-the-cytoplasmic-domain-of-cd103-promotes-cell-adhesion-and-effector-functions-for-cd8-resident-memory-t-cells-in-tumors
#20
Ludiane Gauthier, Stephanie Corgnac, Marie Boutet, Gwendoline Gros, Pierre Validire, Georges Bismuth, Fathia Mami-Chouaib
CD8+/CD103+ tissue resident memory T cells (TRM cells) accumulate in several human solid tumors where they have been associated with a favorable prognosis. However, the role of CD103 - the α subunit of the integrin αEβ7 (also known as CD103) - in the retention and functions of these TRM is undefined. In this report, we investigated the role of CD103 cytoplasmic domain and the focal adhesion-associated protein paxillin (Pxn) in downstream signaling and functional activities triggered through αE/CD103 chain...
October 11, 2017: Cancer Research
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