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https://www.readbyqxmd.com/read/29164666/expression-of-dcun1d1-in-laryngeal-squamous-cell-carcinoma-and-its-inhibiting-effect-on-tu-177-cells-after-interfered-by-rna
#1
Jing Liu, Yu Shuang, Chao Li, Xuan Zhou, Yongwang Huang, Lun Zhang
Expression of DCUN1D1 in laryngeal squamous cell carcinoma(LSCC) and its inhibition by small interfering RNA(siRNA) target in the TU-177 cells was investigated. Immunohistochemistry was used to detect the expression level of DCUN1D1 in LSCC tissue in 140 cases and analyze its relationship with clinical pathological characteristics. siRNA expression plasmid targeting DCUN1D1 was constructed and transferred into TU-177 cells. The effect of siRNA target DCUN1D1 gene silencing on proliferation, invasion and migration of TU-177 cells were observed by MTS assay and Transwell experiment...
November 22, 2017: Clinical and Experimental Pharmacology & Physiology
https://www.readbyqxmd.com/read/29158989/activation-of-rho-kinase-and-focal-adhesion-kinase-regulates-the-organization-of-stress-fibers-and-focal-adhesions-in-the-central-part-of-fibroblasts
#2
Kazuo Katoh
Specific regulation and activation of focal adhesion kinase (FAK) are thought to be important for focal adhesion formation, and activation of Rho-kinase has been suggested to play a role in determining the effects of FAK on the formation of stress fibers and focal adhesions. To clarify the role of FAK in stress fiber formation and focal adhesion organization, the author examined the formation of new stress fibers and focal adhesions by activation of Rho-kinase in FAK knockout (FAK(-/-)) fibroblasts. FAK(-/-) cells were elliptical in shape, and showed reduced numbers of stress fibers and focal adhesions in the central part of the cells along with large focal adhesions in the peripheral regions...
2017: PeerJ
https://www.readbyqxmd.com/read/29157829/sulfated-galactans-from-the-red-seaweed-gracilaria-fisheri-exerts-anti-migration-effect-on-cholangiocarcinoma-cells
#3
Thannicha Sae-Lao, Natthanej Luplertlop, Tavan Janvilisri, Rutaiwan Tohtong, David O Bates, Kanokpan Wongprasert
BACKGROUND: Seaweeds have a long history of use in Asian countries as functional foods, medicinal herbs, and the treatment of cancer. Polysaccharides from various seaweeds have shown anti-tumor activity. Cholangiocarcinoma (CCA), often with metastatic disease, is highly prevalent in Thailand as a consequence of liver fluke infection. Recently, we extracted sulfated galactans (SG) from Gracilaria fisheri (G. fisheri), a south east Asian seaweed, and found it exhibited anti-proliferation effect on CCA cells...
December 1, 2017: Phytomedicine: International Journal of Phytotherapy and Phytopharmacology
https://www.readbyqxmd.com/read/29157819/pro-angiogenic-effects-of-ilexsaponin-a1-on-human-umbilical-vein-endothelial-cells-in-vitro-and-zebrafish-in-vivo
#4
Jingjing Li, Jinming Zhang, Liang Zou, Simon Ming-Yuen Lee, Cui Yang, Sai-Wang Seto, George Pak-Heng Leung
BACKGROUND: Ilexsaponin A1 is the major bioactive ingredient of Ilex pubescens Hook. et Arn. This plant has been conventionally used in Traditional Chinese Medicine for the treatment of cardiovascular diseases including stroke, coronary arterial disease, and peripheral vascular diseases. PURPOSE: To investigate the pro-angiogenic effect of Ilexsaponin A1 and its mechanism of action. STUDY DESIGN: Human umbilical vein endothelial cells (HUVECs) and transgenic zebrafish Tg(fli1:EGFP) were employed as an in vitro and in vivo model respectively...
December 1, 2017: Phytomedicine: International Journal of Phytotherapy and Phytopharmacology
https://www.readbyqxmd.com/read/29156825/targeting-p-selectin-blocks-neuroblastoma-growth
#5
Riitta Nolo, Shelley Herbrich, Arvind Rao, Patrick Zweidler-McKay, Sankaranarayanan Kannan, Vidya Gopalakrishnan
Selectins and their ligands have been implicated in tumor growth and progression in carcinomas, but their role in neuroblastoma has not been systematically examined. In the current study we evaluated L-, P- and E-selectin binding to neuroblastoma cells and the expression of some of their known ligands, namely CD44, CD24 and P-selectin glycoprotein ligand-1 (PSGL-1). Genetic loss of PSGL-1 or CD24 and pharmacological inhibition of P-selectin reduced P-selectin binding to neuroblastoma cells in vitro. Targeting P-selectin using specific antibodies promoted a significant reduction in the growth of neuroblastoma tumors in vivo...
October 17, 2017: Oncotarget
https://www.readbyqxmd.com/read/29156817/near-infrared-photothermal-therapy-using-anti-egfr-gold-nanorod-conjugates-for-triple-negative-breast-cancer
#6
Meihua Zhang, Hoe Suk Kim, Tiefeng Jin, Jisu Woo, Yin Ji Piao, Woo Kyung Moon
Current EGFR-targeted therapy for triple negative breast cancer (TNBC) has produced disappointing results. A rational therapeutic strategy to improve EGFR-targeted treatment for TNBC is therefore needed. In this study we evaluated the feasibility of treating TNBC using photoacoustic imaging (PAI)-guided near-infrared photothermal therapy (NIR-PTT) with anti-EGFR-conjugated gold nanorods (anti-EGFR-GN). NIR-PTT combined with anti-EGFR-GN exerted synergistic anti-proliferative and apoptotic actions through upregulation of HSP70 and cleaved caspase-3, downregulation of Ki-67 and EGFR, and inhibition of several intracellular signaling molecules (mTOR, AKT, ERK1/2 and FAK)...
October 17, 2017: Oncotarget
https://www.readbyqxmd.com/read/29152255/effects-of-monobutyrin-and-tributyrin-on-liver-lipid-profile-caecal-microbiota-composition-and-scfa-in-high-fat-diet-fed-rats
#7
Thao Duy Nguyen, Olena Prykhodko, Frida Fåk Hållenius, Margareta Nyman
Butyric acid has been shown to have suppressive effects on inflammation and diseases related to the intestinal tract. The aim of the present study was to investigate whether supplementation of two glycerol esters, monobutyrin (MB) and tributyrin (TB), would reach the hindgut of rats, thus having an effect on the caecal profile of SCFA, microbiota composition and some risk markers associated with chronic inflammation. For this purpose, rats were fed high-fat diets after adding MB (1 and 5 g/kg) and TB (5 g/kg) to a diet without any supplementation (high-fat control; HFC)...
2017: Journal of Nutritional Science
https://www.readbyqxmd.com/read/29151962/insufficient-radiofrequency-ablation-treated-hepatocellular-carcinoma-cells-promote-metastasis-by-up-regulation-itgb3
#8
Ning Zhang, Dening Ma, Lu Wang, Xiaodong Zhu, Qi Pan, Yiming Zhao, Weiping Zhu, Jiamin Zhou, Longrong Wang, Zongtao Chai, Jianyang Ao, Huichuan Sun, Zhaoyou Tang
Radiofrequency ablation (RFA) is one of the standards of care for early stage hepatocellular carcinoma (HCC). However, rapid progression of residual tumor after RFA has been confirmed. The aim of this study was to investigate the underlying mechanism of this phenomenon. Human HCC cell lines HCCLM3 and HepG2 were employed to establish insufficient RFA models in vivo and in vitro, respectively. The effects of insufficient RFA on metastatic potential of residual tumors were evaluated. The molecular changes after insufficient RFA were evaluated by PCR array, western blot, immunofluorescence, and immunohistochemistry...
2017: Journal of Cancer
https://www.readbyqxmd.com/read/29150642/rescue-of-pfos-induced-human-sertoli-cell-injury-by-overexpressing-a-p-fak-y407e-phosphomimetic-mutant
#9
Haiqi Chen, Ying Gao, Dolores D Mruk, Xiang Xiao, Constance M John, Paul J Turek, Wing-Yee Lui, Will M Lee, Bruno Silvestrini, C Yan Cheng
PFOS induces Sertoli cell injury using testicular cells isolated from rodent testes, but it remains unknown if PFOS has similar effects in humans. Herein, we maintained human Sertoli cells in a mitotically active state in vitro, thus enabling transfection experiments that altered gene expression to explore the molecular mechanism(s) underlying toxicant-induced cell injury. Human Sertoli cells obtained from men at ages 15, 23, 36 and 40 were cultured in vitro. These differentiated Sertoli cells remained mitotically active when cultured in the presence of 10% FBS (fetal bovine serum), with a replication time of ~1-3 weeks...
November 17, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29150439/suppression-of-fip200-and-autophagy-by-tumor-derived-lactate-promotes-na%C3%A3-ve-t-cell-apoptosis-and-affects-tumor-immunity
#10
Houjun Xia, Wei Wang, Joel Crespo, Ilona Kryczek, Wei Li, Shuang Wei, Zhaoqun Bian, Tomasz Maj, Mingxiao He, Rebecca J Liu, Youwen He, Ramandeep Rattan, Adnan Munkarah, Jun-Lin Guan, Weiping Zou
Naïve T cells are poorly studied in cancer patients. We report that naïve T cells are prone to undergo apoptosis due to a selective loss of FAK family-interacting protein of 200 kDa (FIP200) in ovarian cancer patients and tumor-bearing mice. This results in poor antitumor immunity via autophagy deficiency, mitochondria overactivation, and high reactive oxygen species production in T cells. Mechanistically, loss of FIP200 disables the balance between proapoptotic and antiapoptotic Bcl-2 family members via enhanced argonaute 2 (Ago2) degradation, reduced Ago2 and microRNA1198-5p complex formation, less microRNA1198-5p maturation, and consequently abolished microRNA1198-5p-mediated repression on apoptotic gene Bak1 Bcl-2 overexpression and mitochondria complex I inhibition rescue T cell apoptosis and promoted tumor immunity...
November 17, 2017: Science Immunology
https://www.readbyqxmd.com/read/29146887/targeted-therapy-of-gastroenteropancreatic-neuroendocrine-tumours-preclinical-strategies-and-future-targets
#11
Elke Tatjana Aristizabal Prada, Christoph J Auernhammer
Molecular targeted therapy of advanced neuroendocrine tumours (NETs) of the gastroenteropancreatic (GEP) system currently encompasses approved therapy with the mTOR-inhibitor everolimus and the multi-tyrosinkinase inhibitor sunitinib. However clinical efficacy of these treatment strategies is limited by low objective response rates and limited progression free survival due to tumor resistance. Further novel strategies for molecular targeted therapy of NETs of the GEP-system are needed. This paper reviews preclinical research models and signaling pathways in NETs of the GEP-system...
November 16, 2017: Endocrine Connections
https://www.readbyqxmd.com/read/29145097/lc-esi-ms-ms-determination-of-defactinib-a-novel-fak-inhibitor-in-mice-plasma-and-its-application-to-a-pharmacokinetic-study-in-mice
#12
Gurulingappa Hallur, Natarajan Tamizharasan, Suresh P Sulochana, Neeraj Kumar Saini, Mohd Zainuddin, Ramesh Mullangi
A sensitive, specific, selective and rapid LC-ESI-MS/MS method has been developed and validated for the quantification of defactinib in mice plasma using (13)C3,(15)N-tofacitinib as an internal standard (I.S.). Sample preparation was accomplished through a liquid-liquid extraction process. Baseline chromatographic resolution of defactinib and the I.S. was achieved on an Atlantis dC18 column using an isocratic mobile phase comprising 0.2% formic acid in water and acetonitrile (25:75, v/v) delivered at a flow rate of 0...
November 10, 2017: Journal of Pharmaceutical and Biomedical Analysis
https://www.readbyqxmd.com/read/29144435/dysregulated-collagen-homeostasis-by-matrix-stiffening-and-tgf-%C3%AE-1-in-fibroblasts-from-idiopathic-pulmonary-fibrosis-patients-role-of-fak-akt
#13
Alícia Giménez, Paula Duch, Marta Puig, Marta Gabasa, Antoni Xaubet, Jordi Alcaraz
Idiopathic pulmonary fibrosis (IPF) is an aggressive disease in which normal lung parenchyma is replaced by a stiff dysfunctional scar rich in activated fibroblasts and collagen-I. We examined how the mechanochemical pro-fibrotic microenvironment provided by matrix stiffening and TGF-β1 cooperates in the transcriptional control of collagen homeostasis in normal and fibrotic conditions. For this purpose we cultured fibroblasts from IPF patients or control donors on hydrogels with tunable elasticity, including 3D collagen-I gels and 2D polyacrylamide (PAA) gels...
November 16, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/29143227/pdgfr-inhibition-mediated-intracellular-signalling-in-c6-glioma-growth-and-migration-role-of-erk-and-rock-pathway
#14
Juhi Singh, Kedarlal Sharma, Prakash P Pillai
Aberrant PDGFR (Platelet derived growth factor receptor) signalling in brain tumors and gliomas is one of the primary cause of tumor progression. PDGFR stimulation by its ligand and the role of its downstream mediators such as extracellular regulated kinases (ERK1/2), PI3K and ROCK pathways have not been thoroughly investigated. The present study sought to investigate the role of PDGF receptor signalling inhibition on suppression of rat C6 glioma growth and migration. Treatment of C6 cells with PDGFR inhibitor, AG1295 caused a significant reduction in migration and proliferation by regulating the ERK and ROCK signalling...
November 15, 2017: Cytotechnology
https://www.readbyqxmd.com/read/29143014/synthesis-characterization-and-anticancer-activity-of-two-mixed-ligand-copper-ii-complexes-by-regulating-the-vegf-vegfr2-signaling-pathway
#15
Xiu-Ying Qin, Ya-Nan Wang, Xin-Ping Yang, Juan-Juan Liang, Ji-Lin Liu, Zhao-Hui Luo
The single crystals of two novel mixed-ligand copper(ii)-based complexes were obtained and characterized. These complexes can remarkably induce apoptosis, inhibit proliferation, suppress migration and metastasis, and inhibit angiogenesis to inhibit the growth of cervical cancer by down-regulating the expressions of the important proteins FAK, Akt and Erk1/2 or their phosphorylated proteins p-FAK, p-Akt, and p-Erk1/2 downstream of the VEGF/VEGFR2 signaling pathway.
November 16, 2017: Dalton Transactions: An International Journal of Inorganic Chemistry
https://www.readbyqxmd.com/read/29137326/overexpression-of-carbonic-anhydrase-ix-induces-cell-motility-by-activating-matrix-metalloproteinase-9-in-human-oral-squamous-cell-carcinoma-cells
#16
Jia-Sin Yang, Chiao-Wen Lin, Yi-Hsien Hsieh, Ming-Hsien Chien, Chun-Yi Chuang, Shun-Fa Yang
Oral cancer is a solid malignant tumor that is prone to occur following hypoxia. There are no clear studies showing a link between hypoxia and oral carcinogenesis. Carbonic anhydrase IX (CAIX), which is a hypoxia-induced transmembrane protein, is highly expressed in various types of human cancer. However, the effects of CAIX on the metastasis of human oral cancer cells and the underlying molecular mechanisms have not been clarified. In this study, we observed that CAIX overexpression increased the migratory and invasive abilities of SCC-9 and SAS cells...
October 10, 2017: Oncotarget
https://www.readbyqxmd.com/read/29136780/cml-cd36-accelerates-atherosclerotic-progression-via-inhibiting-foam-cell-migration
#17
Suining Xu, Lihua Li, Jinchuan Yan, Fei Ye, Chen Shao, Zhen Sun, Zhengyang Bao, Zhiyin Dai, Jie Zhu, Lele Jing, Zhongqun Wang
Among the various complications of type 2 diabetes mellitus, atherosclerosis causes the highest disability and morbidity. A multitude of macrophage-derived foam cells are retained in atherosclerotic plaques resulting not only from recruitment of monocytes into lesions but also from a reduced rate of macrophage migration from lesions. Nε-carboxymethyl-Lysine (CML), an advanced glycation end product, is responsible for most complications of diabetes. This study was designed to investigate the mechanism of CML/CD36 accelerating atherosclerotic progression via inhibiting foam cell migration...
November 8, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/29135089/fak-src-and-p-paxillin-expression-is-decreased-in-liver-metastasis-of-colorectal-carcinoma-patients
#18
Eleftherios Mantonakis, Constantinos Giaginis, Emmanouel Pikoulis, Evangelos Felekouras, Efstratios Patsouris, Theodoros Liakakos, Efstathios Papalampros, Stamatios Theocharis
PURPOSE: The FAK/Src/Paxillin (PXN) axis has been implicated in malignant transformation, tumor growth, progression and metastasis. The present study aimed to assess FAK/Src/PXN protein expression in both primary and liver metastatic sites of colorectal adenocarcinoma (CRC). METHODS: FAK, Src and p-PXN expression was assessed immunohistochemically on 32 primary CRCs and their corresponding liver metastases, being also analyzed in relation with clinicopathological characteristics and patient survival...
September 2017: Journal of B.U.ON.: Official Journal of the Balkan Union of Oncology
https://www.readbyqxmd.com/read/29133945/microrna-7-5p-mediates-the-signaling-of-hepatocyte-growth-factor-to-suppress-oncogenes-in-the-mcf-10a-mammary-epithelial-cell
#19
Dawoon Jeong, Juyeon Ham, Sungbin Park, Seungyeon Lee, Hyunkyung Lee, Han-Sung Kang, Sun Jung Kim
MicroRNA-7 (miR-7) is a non-coding RNA of 23-nucleotides that has been shown to act as a tumor suppressor in various cancers including breast cancer. Although there have been copious studies on the action mechanisms of miR-7, little is known about how the miR is controlled in the mammary cell. In this study, we performed a genome-wide expression analysis in miR-7-transfected MCF-10A breast cell line to explore the upstream regulators of miR-7. Analysis of the dysregulated target gene pool predicted hepatocyte growth factor (HGF) as the most plausible upstream regulator of miR-7...
November 13, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29133485/pyk2-and-fak-differentially-regulate-invadopodia-formation-and-function-in-breast-cancer-cells
#20
Alessandro Genna, Stefanie Lapetina, Nikola Lukic, Shams Twafra, Tomer Meirson, Ved P Sharma, John S Condeelis, Hava Gil-Henn
The nonreceptor tyrosine kinase Pyk2 is highly expressed in invasive breast cancer, but the mechanism by which it potentiates tumor cell invasiveness is unclear at present. Using high-throughput protein array screening and bioinformatic analysis, we identified cortactin as a novel substrate and interactor of proline-rich tyrosine kinase 2 (Pyk2). Pyk2 colocalizes with cortactin to invadopodia of invasive breast cancer cells, where it mediates epidermal growth factor-induced cortactin tyrosine phosphorylation both directly and indirectly via Src-mediated Abl-related gene (Arg) activation, leading to actin polymerization in invadopodia, extracellular matrix degradation, and tumor cell invasion...
November 13, 2017: Journal of Cell Biology
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