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Lysosome and migration

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https://www.readbyqxmd.com/read/27922670/downregulation-of-laptm5-suppresses-cell-proliferation-and-viability-inducing-cell-cycle-arrest-at-g0-g1-phase-of-bladder-cancer-cells
#1
Liang Chen, Gang Wang, Yi Luo, Yongzhi Wang, Conghua Xie, Wei Jiang, Yu Xiao, Guofeng Qian, Xinghuan Wang
Our transcriptome analysis revealed in bladder cancer (BCa) tissues a significant induction of lysosomal-associated multispanning membrane protein 5 (LAPTM5), a lysosomal membrane protein preferentially expressing in immune cells and hematopoietic cells. Transportation of LAPTM5 from Golgi to lysosome could be inhibited by deficiency of Nedd4, a key member of E3 ubiquitin ligase family overexpressing in invasive BCa and promoting its progression. Therefore, we hypothesize that LAPTM5 may be closely correlated with BCa tumorigenesis...
December 5, 2016: International Journal of Oncology
https://www.readbyqxmd.com/read/27897122/bioinformatics-analysis-of-chicken-mirnas-associated-with-monocyte-to-macrophage-differentiation-and-subsequent-ifng-stimulated-activation
#2
Kristopher Jl Irizarry, Adam Chan, Derek Kettle, Steven Kezian, Dominic Ma, Louis Palacios, Qingshun Li, Calvin L Keeler, Yvonne Drechsler
The goal of this project was to characterize the molecular and cellular roles of various gene targets regulated by 8 miRNAs in differentiating macrophages. Among a number of miRNAs that are found to be expressed in avian macrophages, we focused on eight specific miRNAs (miR-1618, miR-1586, miR-1633, miR-1627, miR-1646, miR-1649, miR-1610, miR-1647) associated with macrophage activation through Wnt signaling, ubiquitination, PPAR mediated macrophage function, vesicle mediated cytokine trafficking, and WD40 domain proteins in macrophage differentiation...
November 29, 2016: MicroRNA
https://www.readbyqxmd.com/read/27884932/drosophila-wash-is-required-for-integrin-mediated-cell-adhesion-cell-motility-and-lysosomal-neutralization
#3
Benedikt M Nagel, Meike Bechtold, Luis Garcia Rodriguez, Sven Bogdan
The Wiskott-Aldrich Syndrome Protein and SCAR Homologue (WASH) is a conserved actin nucleation promoting factor controlling Arp2/3 complex activity in endosomal sorting and recycling. Previous studies have identified WASH as an essential regulator in Drosophila development. Here, we show that homozygous wash mutant flies are viable and fertile. We demonstrate that Drosophila WASH has conserved functions in integrin receptor recycling and lysosome neutralization. WASH generates actin patches on endosomes and lysosomes mediating both functions...
November 24, 2016: Journal of Cell Science
https://www.readbyqxmd.com/read/27857942/septins-as-modulators-of-endo-lysosomal-membrane-traffic
#4
REVIEW
Kyungyeun Song, Giulia Russo, Michael Krauss
Septins constitute a family of GTP-binding proteins, which assemble into non-polar filaments in a nucleotide-dependent manner. These filaments can be recruited to negatively charged membrane surfaces. When associated with membranes septin filaments can act as diffusion barriers, which confine subdomains of distinct biological functions. In addition, they serve scaffolding roles by recruiting cytosolic proteins and other cytoskeletal elements. Septins have been implicated in a large variety of membrane-dependent processes, including cytokinesis, signaling, cell migration, and membrane traffic, and several family members have been implicated in disease...
2016: Frontiers in Cell and Developmental Biology
https://www.readbyqxmd.com/read/27810645/pre-instillation-of-tumor-microparticles-enhances-intravesical-chemotherapy-of-nonmuscle-invasive-bladder-cancer-through-a-lysosomal-pathway
#5
Xun Jin, Jingwei Ma, Xiaoyu Liang, Ke Tang, Yuying Liu, Xiaonan Yin, Yi Zhang, Huafeng Zhang, Pingwei Xu, Degao Chen, Tianzhen Zhang, Jinzhi Lu, Zhuowei Hu, Xiaofeng Qin, Xiaoyong Zeng, Longcheng Li, Bo Huang
Nonmuscle-invasive bladder cancer (NMIBC) is treated with transurethral resection followed by intravesical chemotherapy. However, drug-resistant tumorigenic cells cannot be eliminated, leading to half of the treated cancers recur with increased stage and grade. Innovative approaches to enhance drug sensitivity and eradicate tumorigenic cells in NMIBC treatment are urgently needed. Here, we show that pre-instillation of tumor cell-derived microparticles (T-MP) as natural biomaterials markedly enhance the inhibitory effects of intravesical chemotherapy on growth and hematuria occurrence of orthotropic bladder cancer in mice...
October 24, 2016: Biomaterials
https://www.readbyqxmd.com/read/27799357/mechanisms-and-functions-of-lysosome-positioning
#6
REVIEW
Jing Pu, Carlos M Guardia, Tal Keren-Kaplan, Juan S Bonifacino
Lysosomes have been classically considered terminal degradative organelles, but in recent years they have been found to participate in many other cellular processes, including killing of intracellular pathogens, antigen presentation, plasma membrane repair, cell adhesion and migration, tumor invasion and metastasis, apoptotic cell death, metabolic signaling and gene regulation. In addition, lysosome dysfunction has been shown to underlie not only rare lysosome storage disorders but also more common diseases, such as cancer and neurodegeneration...
December 1, 2016: Journal of Cell Science
https://www.readbyqxmd.com/read/27793040/mirna-3978-regulates-peritoneal-gastric-cancer-metastasis-by-targeting-legumain
#7
Yi Zhang, Yuan-Yu Wu, Jun-Nan Jiang, Xue-Song Liu, Fu-Jian Ji, Xue-Dong Fang
Gastric cancer incidence and mortality are among the highest in China, with majority of the mortality related to peritoneal metastasis of gastric cancer. Treatment is limited to radical resection, which is impeded by incidence of metastasis at time of initial diagnosis, thus making it imperative to identify diagnostic and prognostic biomarkers. Legumain, a lysosomal cysteine endopeptidase of the asparaginyl endopeptidase family, has been shown to be overexpressed in patients with metastatic gastric cancer disease and its expression was positively correlated to both disease progression and outcome...
October 26, 2016: Oncotarget
https://www.readbyqxmd.com/read/27789711/%C3%AE-arrestin1-and-signal-transducing-adaptor-molecule-1-stam1-cooperate-to-promote-focal-adhesion-kinase-autophosphorylation-and-chemotaxis-via-the-chemokine-receptor-cxcr4
#8
Olga Alekhina, Adriano Marchese
The chemokine receptor CXCR4 and its chemokine ligand CXCL12 mediate directed cell migration during organogenesis, immune responses and also metastatic disease. Yet the mechanisms governing CXCL12/CXCR4-dependent chemotaxis remain poorly understood. Here, we show that the β-arrestin1/STAM1 complex, initially identified to govern lysosomal trafficking of CXCR4, also mediates CXCR4-dependent chemotaxis. Expression of minigene fragments from β-arrestin1 or STAM1, known to disrupt the β-arrestin1/STAM1 complex, and RNAi against β-arrestin1 or STAM1, attenuates CXCL12-induced chemotaxis...
October 27, 2016: Journal of Biological Chemistry
https://www.readbyqxmd.com/read/27774504/data-analyses-of-honokiol-induced-autophagy-of-human-glioma-cells-in-vitro-and-in-vivo
#9
Gong-Jhe Wu, Chien-Ju Lin, Yung-Wei Lin, Ruei-Ming Chen
This article contains raw and processed data related to a research, "Honokiol induces autophagic cell death in malignant glioma through reactive oxygen species-mediated regulation of the p53/PI3K/Akt/mTOR signaling pathway" (C.J. Lin, T.L. Chen, Y.Y. Tseng, G.J. Wu, M.H. Hsieh, Y.W. Lin, R.M. Chen, 2016) [1]. Data were obtained by immunoblotting analyses of light chain 3 (LC3)-II, beclin-1, Akt, and mTOR in human glioma U87 MG cells and mouse glioma tissues treated with honokiol, an active constituent extracted from the bark of Magnolia officinalis, "Honokiol induces autophagy of neuroblastoma cells through activating the PI3K/Akt/mTOR and endoplasmic reticular stress/ERK1/2 signaling pathways and suppressing cell migration" (P...
December 2016: Data in Brief
https://www.readbyqxmd.com/read/27708138/golph3-drives-cell-migration-by-promoting-golgi-reorientation-and-directional-trafficking-to-the-leading-edge
#10
Mengke Xing, Marshall C Peterman, Robert L Davis, Karen Oegema, Andrew K Shiau, Seth J Field
The mechanism of directional cell migration remains an important problem, with relevance to cancer invasion and metastasis. GOLPH3 is a common oncogenic driver of human cancers, and is the first oncogene that functions at the Golgi in trafficking to the plasma membrane. Overexpression of GOLPH3 is reported to drive enhanced cell migration. Here we show that the phosphatidylinositol-4-phosphate/GOLPH3/myosin 18A/F-actin pathway that is critical for Golgi-to-plasma membrane trafficking is necessary and limiting for directional cell migration...
December 1, 2016: Molecular Biology of the Cell
https://www.readbyqxmd.com/read/27684087/phagosome-migration-and-velocity-measured-in-live-primary-human-macrophages-infected-with-hiv-1
#11
Gabrielle Lê-Bury, Chantal Deschamps, Audrey Dumas, Florence Niedergang
Macrophages are phagocytic cells that play a major role at the crossroads between innate and specific immunity. They can be infected by the human immunodeficiency virus (HIV)-1 and because of their resistance to its cytopathic effects they can be considered to be persistent viral reservoirs. In addition, HIV-infected macrophages exhibit defective functions that contribute to the development of opportunistic diseases. The exact mechanism by which HIV-1 impairs the phagocytic response of macrophages was unknown...
2016: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/27672021/autophagy-in-adhesion-and-migration
#12
REVIEW
Candia M Kenific, Torsten Wittmann, Jayanta Debnath
Autophagy, a pathway for lysosomal-mediated cellular degradation, has recently been described as a regulator of cell migration. Although the molecular mechanisms underlying autophagy-dependent motility are only beginning to emerge, new work demonstrates that selective autophagy mediated by the autophagy cargo receptor, NBR1, specifically promotes the dynamic turnover of integrin-based focal adhesion sites during motility. Here, we discuss the detailed mechanisms through which NBR1-dependent selective autophagy supports focal adhesion remodeling, and we describe the interconnections between this pathway and other established regulators of focal adhesion turnover, such as microtubules...
October 15, 2016: Journal of Cell Science
https://www.readbyqxmd.com/read/27660056/inflammasome-in-dendritic-cells-immunobiology-implications-to-diseases-and-therapeutic-strategies
#13
Isabel Ferreira, Joana Liberal, João Martins, Ana Silva, Bruno M Neves, Maria Teresa Cruz
An intricate interplay between innate and adaptive immune cells is crucial for an effective immune response during disease, infection and vaccination. This interplay is manly performed by dendritic cells (DCs), which are professional antigen presenting cells (APCs) with unparalleled capacity to translate innate to adaptive immunity. They effectively recognize and uptake antigens, migrate to lymphoid tissues, and activate naïve T-cells. To enable rapid pathogen detection DCs utilize numerous germline encoded pattern recognition receptors (PRR) that recognize conserved pathogen associated molecular patterns (PAMPs) or danger associated molecular patterns (DAMPs)...
September 21, 2016: Current Drug Targets
https://www.readbyqxmd.com/read/27626694/novel-role-of-mir-29a-in-pancreatic-cancer-autophagy-and-its-therapeutic-potential
#14
Jason J Kwon, Jeffrey A Willy, Kayla A Quirin, Ronald C Wek, Murray Korc, Xiao-Ming Yin, Janaiah Kota
Pancreatic Ductal Adenocarcinoma (PDAC) is a highly lethal malignancy that responds poorly to current therapeutic modalities. In an effort to develop novel therapeutic strategies, we found downregulation of miR-29 in pancreatic cancer cells, and overexpression of miR-29a sensitized chemotherapeutic resistant pancreatic cancer cells to gemcitabine, reduced cancer cell viability, and increased cytotoxicity. Furthermore, miR-29a blocked autophagy flux, as evidenced by an accumulation of autophagosomes and autophagy markers, LC3B and p62, and a decrease in autophagosome-lysosome fusion...
September 10, 2016: Oncotarget
https://www.readbyqxmd.com/read/27615202/barium-sulfate-micro-and-nanoparticles-as-bioinert-reference-material-in-particle-toxicology
#15
Kateryna Loza, Isabell Föhring, Jürgen Bünger, Götz A Westphal, Manfred Köller, Matthias Epple, Christina Sengstock
The inhalation of particles and their exposure to the bronchi and alveoli constitute a major public health risk. Chemical as well as particle-related properties are important factors for the biological response but are difficult to separate from each other. Barium sulfate is a completely inert chemical compound, therefore it is ideally suited to separate these two factors. The biological response of rat alveolar macrophages (NR8383) was analyzed after exposure to barium sulfate particles with three different diameters (40 nm, 270 nm, and 1...
September 27, 2016: Nanotoxicology
https://www.readbyqxmd.com/read/27560716/fucosylation-of-lamp-1-and-lamp-2-by-fut1-correlates-with-lysosomal-positioning-and-autophagic-flux-of-breast-cancer-cells
#16
Keng-Poo Tan, Ming-Yi Ho, Huan-Chieh Cho, John Yu, Jung-Tung Hung, Alice Lin-Tsing Yu
Alpha1,2-fucosyltransferases, FUT1 and FUT2, which transfer fucoses onto the terminal galactose of N-acetyl-lactosamine via α1,2-linkage have been shown to be highly expressed in various types of cancers. A few studies have shown the involvement of FUT1 substrates in tumor cell proliferation and migration. Lysosome-associated membrane protein 1, LAMP-1, has been reported to carry alpha1,2-fucosylated Lewis Y (LeY) antigens in breast cancer cells, however, the biological functions of LeY on LAMP-1 remain largely unknown...
August 25, 2016: Cell Death & Disease
https://www.readbyqxmd.com/read/27543693/dual-functionalized-graphene-oxide-for-enhanced-sirna-delivery-to-breast-cancer-cells
#17
Rana Imani, Wei Shao, Samira Taherkhani, Shahriar Hojjati Emami, Satya Prakash, Shahab Faghihi
The aim of this study is to improve hydrocolloid stability and siRNA transfection ability of a reduced graphene oxide (rGO) based nano-carrier using a phospholipid-based amphiphilic polymer (PL-PEG) and cell penetrating peptide (CPPs). The dual functionalized nano-carrier is comprehensively characterized for its chemical structure, size, surface charge and morphology as well as thermal stability. The nano-carrier cytocompatibility, siRNA condensation ability both in the presence and absence of enzyme, endosomal buffering capacity, cellular uptake and intracellular localization are also assessed...
November 1, 2016: Colloids and Surfaces. B, Biointerfaces
https://www.readbyqxmd.com/read/27531422/bone-targeted-mesoporous-silica-nanocarrier-anchored-by-zoledronate-for-cancer-bone-metastasis
#18
Wentong Sun, Yu Han, Zhenhua Li, Kun Ge, Jinchao Zhang
Once bone metastasis occurs, the chances of survival and quality of life for cancer patients decrease significantly. With the development of nanomedicine, nanocarriers loading bisphosphonates have been built to prevent cancer metastasis based on their enhanced permeability and retention (EPR) effects; however, as a passive mechanism, the EPR effects cannot apply to the metastatic sites because of their lack of leaky vasculature. In this study, we fabricated 40 nm-sized mesoporous silica nanoparticles (MSNs) anchored by zoledronic acid (ZOL) for targeting bone sites and delivered the antitumor drug doxorubicin (DOX) in a spatiotemporally controlled manner...
September 13, 2016: Langmuir: the ACS Journal of Surfaces and Colloids
https://www.readbyqxmd.com/read/27502159/acetate-ions-enhance-load-and-stability-of-doxorubicin-onto-pegylated-nanodiamond-for-selective-tumor-intracellular-controlled-release-and-therapy
#19
Lin Li, Lu Tian, Wenjing Zhao, Yingqi Li, Binsheng Yang
A successful drug delivery device for cancer chemotherapy should ideally be able to load drugs highly, bring the drug preferentially into tumor cells and reduce its distribution in normal tissue to enhance therapeutic efficacy. To this purpose, a novel protocol for DOX-loaded PEGylated nanodiamond (ND-PEG-DOX/NaAc, NPDA) was fabricated using sodium acetate medium. The NPDA nanoparticles exhibited a maximum loading efficiency (99 wt%) with ultra-low drug leakage (7 wt%). Examination by confocal microscope and flow cytometer showed that the NPDA uptake by cells was time-dependent, with a slow and sustained drug release from the lysosomes at a low pH...
September 12, 2016: Integrative Biology: Quantitative Biosciences From Nano to Macro
https://www.readbyqxmd.com/read/27461363/lung-epithelial-cell-specific-expression-of-human-lysosomal-acid-lipase-ameliorates-lung-inflammation-and-tumor-metastasis-in-lipa-mice
#20
Ting Zhao, Xinchun Ding, Hong Du, Cong Yan
Lysosomal acid lipase (LAL), a key enzyme in the metabolic pathway of neutral lipids, has a close connection with inflammation and tumor progression. One major manifestation in LAL-deficient (Lipa(-/-)) mice is an increase of tumor growth and metastasis associated with expansion of myeloid-derived suppressor cells. In the lung, LAL is highly expressed in alveolar type II epithelial cells. To assess how LAL in lung epithelial cells plays a role in this inflammation-related pathogenic process, lung alveolar type II epithelial cell-specific expression of human LAL (hLAL) in Lipa(-/-) mice was established by crossbreeding of CCSP-driven rtTA transgene and (TetO)7-CMV-hLAL transgene into Lipa(-/-) mice (CCSP-Tg/KO)...
August 2016: American Journal of Pathology
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