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Cell Biology International

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https://www.readbyqxmd.com/read/28225180/microrna-216b-inhibits-cell-proliferation-and-migration-in-human-melanoma-by-targeting-foxm1-in-vitro-and-in-vivo
#1
Mengyao Sun, Xiaopeng Wang, Chen Tu, Shuang Wang, Jianqiang Qu, Shengxiang Xiao
MicroRNAs (miRNAs) play an increasingly important role in cancer growth by coordinately suppressing genes that controlcell migration, proliferationand invasion. The above results can be achieved through the regulation of gene expression by miRNAs bysuppressing translation or the directsequence-specific degradation of the targetedmRNA. In the present study, we indicate that the expression of miR-216b could be effectively repressed both in human melanoma tissues through a comparison with primary melanoma and in human melanoma cell lines through a comparison with a normal human keratinocyte line...
February 22, 2017: Cell Biology International
https://www.readbyqxmd.com/read/28225172/mir-144-affects-fatty-acid-composition-by-regulating-elovl6-expression-in-duck-hepatocytes
#2
Jun He, Yong Tian, Yan Zhao, Yali Liu, Zhengrong Tao, Guoqin Li, Dong Niu, Lizhi Lu, Yingru Lu
Lipid metabolism in duck is very important for both raisers and people's health. In our previous studies, we have detected that miR-144 is related to duck lipid metabolism and validated one of its target genes, elongation of very long chain fatty acids protein 6 (ELOVL6). In the present study, we isolated, cultured and identified duck hepatocytes, and transfected with miR-144 mimics/inhibitor to mediate the miR-144 level. The qRT-PCR results showed that the ELOVL6 expression in duck hepatocytes was down-/up-regulated, respectively...
February 22, 2017: Cell Biology International
https://www.readbyqxmd.com/read/28220611/non-coding-rnas-emerging-regulatory-factors-in-the-derivation-and-differentiation-of-mammalian-parthenogenetic-embryonic-stem-cells
#3
REVIEW
Jihong Cui, Xin Xie
Parthenogenetic embryonic stem cells (PESCs) are ESCs derived from early parthenogenetic embryos. Haploid PESCs, containing haploid DNA, originate from a single sperm or occyte, while, diploid PESCs originate from two fused occytes. Most PESC lines used so far are diploid. PESCs exhibit representative pluripotent stem cell features, such as the capacity for self-renewal and the pariticular molecular signatures. Whereas, PESCs display distinctive properties, such as differential regulation of X-chromosome inactivation (XCI) and divergent monitor of genes involved in multiple biological processes...
February 21, 2017: Cell Biology International
https://www.readbyqxmd.com/read/28220578/renal-damage-following-alloxan-induced-diabetes-is-associated-with-generation-of-reactive-oxygen-species-alterations-of-p53-tgf-%C3%AE-1-and-extracellular-matrix-metalloproteinases-in-rats
#4
Mohamed A Abdel Aziz, Dalia M Badary, Mahmoud Rezk Abdelwahed Hussein
: Renal damage is a common problem in diabetes. Alloxan , a potent hyperglycemic and diabetogenic molecule, can induce diabetes through oxidative stress-related mechanisms. Here, we hypothesize that "Alloxan-induced renal damage is associated with alterations of p53, TGF-β1 and extracellular matrix metalloproteinases". To test our hypothesis, we established an animal model (male abino rats) and induced diabetes by intraperitoneal injection of Alloxan monohydrate. Rats with fasting blood glucose level ≥ 200 mg/dl were considered diabetic and were sacrificed after 14, 28, and 42 day intervals...
February 21, 2017: Cell Biology International
https://www.readbyqxmd.com/read/28206713/effect-of-heme-oxygenase-1-transduced-bone-marrow-mesenchymal-stem-cells-on-damaged-intestinal-epithelial-cells-in-vitro
#5
Yi Cao, Ben-Juan Wu, Wei-Ping Zheng, Ming-Li Yin, Tao Liu, Hong-Li Song
In this study we explored the effects of mesenchymal stem cells (MSCs) from bone marrow overexpressing heme oxygenase-1 (HO-1) on the damaged human intestinal epithelial barrier in vitro. Rat MSCs were isolated from bone marrow and transduced with rat HO-1 recombinant adenovirus (HO-MSCs) for stable expression of HO-1. Colorectal adenocarinoma 2 (Caco2) cells were treated with tumor necrosis factor-α (TNF-α) to establish a damaged colon epithelial model. Damaged Caco2 were cocultured with MSCs, Ad-MSCs, Ad-HO + MSCs or HO-MSCs mRNA and protein expression of Zona occludens-1 (ZO-1) and human HO-1, and the release of cytokines were measured...
February 16, 2017: Cell Biology International
https://www.readbyqxmd.com/read/28206697/heparanase-1-involvement-in-prostate-physiopathology
#6
REVIEW
Guilherme O Barbosa, Nilva K Cervigne, Hernandes F Carvalho, Taize M Augusto
The prostate is a compound exocrine gland of the male reproductive tract universally present in mammals. It is highly responsive to androgen and can be committed by a variety of pathological complications as prostatitis, benign and malignant proliferative changes, which may be intensified by aging. Prostate intensively turnover its extracellular matrix (ECM) either at homeostasis or disease which includes a dynamically change of glycosaminoglycan composition during the life of an individual. Among the different enzymes playing a role in such changes, Heparanase-1 is responsible for cleaving heparan sulfate (HS) at a limited number of sites, clearly involved in tissue remodeling...
February 16, 2017: Cell Biology International
https://www.readbyqxmd.com/read/28205281/growth-hormone-modulates-in-vitro-endothelial-cell-migration-and-formation-of-capillary-like-structures
#7
Cícero Fagner Messias de Lima, Maria Danielma Dos Santos Reis, Fernando Wagner da Silva Ramos, Silvana Ayres-Martins, Salete Smaniotto
The generation of new blood vessels is a complex process mediated by a variety of growth factors, and the growth hormone (GH) has been shown to act as a proangiogenic factor. In fact, human GH deficiency or excess are associated with endothelial dysfunction. Moreover, mouse models have revealed the action of GH in both tissue repair and in the microvascular circulation of normal tissues. In this study, we investigated the in vitro effects of GH on endothelial cells. Using a murine endothelioma cell line (tEnd...
February 16, 2017: Cell Biology International
https://www.readbyqxmd.com/read/28198596/propofol-protects-against-hepatic-ischemia-reperfusion-injury-via-mir-133a-5p-regulating-the-expression-of-mapk6
#8
Wei Hao, Zhi-Hui Zhao, Qing-Tao Meng, Mu-Er Tie, Shao-Qing Lei, Zhong-Yuan Xia
Propofol has been found to play an important role in hepatic ischemia/reperfusion (I/R) injury with the antioxidant effects. However, the molecular mechanism of propofol in hepatic I/R injury has not been fully understood. Male Sprague-Dawley rats were randomly assigned into Sham group, hepatic I/R group, and propofol treatment group. I/R injury was attained by ischemia for 1 h and reperfusion for 2 h. Serum aspartate aminotransferase (AST) and alanine aminotransferase (ALT) activity were detected. QSG-7701 cells were cultured in hypoxia condition for 15 h and then in reoxygenation condition for 6 h to imitate hypoxia/reoxygenation (H/R) injury in vitro...
February 15, 2017: Cell Biology International
https://www.readbyqxmd.com/read/28198586/influence-of-a-critical-single-nucleotide-polymorphism-on-nuclear-receptor-pxr-promoter-function
#9
Manjul Rana, Poonam Coshic, Ravinder Goswami, Rakesh K Tyagi
The Pregnane and Xenobiotic Receptor (PXR; NR1I2), is a ligand-modulated transcription factor that belongs to the nuclear receptor superfamily. It is expressed at higher levels primarily in liver and intestine as compared to the levels in several other organs. It is activated by a broad spectrum of xenobiotics and endobiotics. The primary function of PXR is to regulate the expression of drug metabolizing enzymes and transporters and prevent the accumulation of toxic chemicals in the body, thereby maintaining body's homeostasis...
February 15, 2017: Cell Biology International
https://www.readbyqxmd.com/read/28198575/tat-biliverdin-reductase-a-protects-ins-1-cells-from-human-islet-amyloid-polypeptide-induced-cytotoxicity-by-alleviating-oxidative-stress-and-er-stress
#10
Su Jin Lee, Hyung Kyung Kang, Won Sik Eum, Jinseu Park, Soo Young Choi, Hyeok Yil Kwon
Human islet amyloid polypeptide (hIAPP), a major constituent of islet amyloid deposits, induces pancreatic β-cell apoptosis and eventually contributes to β-cell deficit in patients with type 2 diabetes mellitus (T2DM). In this study, Tat-mediated transduction of biliverdin reductase A (BLVRA) was investigated in INS-1 cells to examine whether exogenous supplementation of BLVRA prevented hIAPP-induced apoptosis and dysfunction in insulin secretion in β-cells. Tat-BLVRA fusion protein was efficiently delivered into INS-1 cells in a time- and dose-dependent manner...
February 15, 2017: Cell Biology International
https://www.readbyqxmd.com/read/28198569/effect-of-eicosapentaenoic-acid-on-bovine-cumulus-oocyte-complex-in-vitro
#11
Noelia Nikoloff, Ana M Pascua, Juan M Anchordoquy, Juan P Anchordoquy, Matías A Sirini, Analia Seoane, Cecilia C Furnus
The aim of the present study was to investigate the effects of eicosapentaenoic acid (EPA) supplementation during in vitro maturation (IVM) of bovine oocytes. The concentrations tested in all experiments were 1 nM, 1 μM and 1 mM EPA. The effect of EPA was evaluated on cumulus-oocyte complexes (COC) by oocyte maturation [cumulus expansion area and oocyte nuclear maturation], genotoxicity [single cell gel electrophoresis (SCGE)] and cytotoxicity [apoptosis, viability and MTT assays] end points. The maturation parameters were affected by exposure of COC to different EPA concentrations in the IVM medium...
February 15, 2017: Cell Biology International
https://www.readbyqxmd.com/read/28191740/insulin-dependent-cytoplasmic-distribution-of-rab4a-in-mouse-adipocytes-is-inhibited-by-interleukin-6-8-and-15
#12
Maciej Błaszczyk, Małgorzata Gajewska, Mart Milewska, Katarzyna Grzelkowska-Kowalczyk
The purpose of the study was to examine the effect of interleukins, IL-6, IL-8 and IL-15, on insulin-mediated redistribution of Rab4a, an early endosome marker, in mouse 3T3-L1 adipocytes. The interleukins did not affect cell viability; however, cell number was slightly but significantly higher in cultures exposed to IL-8 and IL-15. IL-8 and IL-15 decreased lipid storage in adipocytes, whereas IL-6 had no effect. Rab4A showed cytoplasmic localization, and in control unstimulated adipocytes it was found primarily nearby nucleus, that was supported by cellular fluorescence distribution profile, and by calculated indices, i...
February 13, 2017: Cell Biology International
https://www.readbyqxmd.com/read/28191699/ndrg1-is-important-to-maintain-the-integrity-of-airway-epithelial-barrier-through-claudin-9-expression
#13
Yasuhiro Gon, Shuichiro Maruoka, Hiroyuki Kishi, Yutaka Kozu, Kuroda Kazumichi, Yasuyuki Nomura, Ikuko Takeshita, Takeshi Oshima, Shu Hashimoto
Impairment of epithelial barrier integrity caused by environmental triggers is associated with the pathogenesis of airway inflammation. Using human airway epithelial cells, we attempted to identify molecule(s) that promote airway epithelial barrier integrity. Microarray analyses were conducted using the Affimetrix human whole genome gene chip, and we identified the N-myc downstream-regulated gene 1 (NDRG1) gene, which was induced during the development of the epithelial cell barrier. Immunohistochemical analysis revealed strong NDRG1 expression in ciliated epithelial cells in nasal tissues sampled from patients with chronic rhinosinusitis (CRS), and the low expression of NDRG1 was observed in goblet cells or damaged epithelial cells...
February 13, 2017: Cell Biology International
https://www.readbyqxmd.com/read/28191696/a-new-approach-in-stem-cell-research-exosomes-their-mechanism-of-action-via-cellular-pathways
#14
REVIEW
Burak Derkus, Kaan C Emregul, Emel Emregul
Exosomes are nano-sized vesicles surrounded by a lipid membrane, which tend to be secreted towards extra-cellular environments. Despite being defined as vesicles involved in excretion of molecular wastes by Rose Johnstone in the 1970's, further studies revealed them to be effective in various biological processes such as cancer development, regulation of the immune system, intercellular communication, stem cell biology and tissue/organ regeneration. Although many studies dealing with the role of exosomes in stem cell differentiation and the use of exosomes isolated from stem cells, for treatment of several diseases have been published, the involved mechanisms remain largely unknown...
February 13, 2017: Cell Biology International
https://www.readbyqxmd.com/read/28185357/yeast-dynamin-interaction-with-escrt-proteins-at-the-endosome
#15
Bryan T Banh, Hyoeun McDermott, Sara Woodman, Shiva Kumar Goud Gadila, Uma Saimani, John Cw Short, Kyoungtae Kim
The dynamin-like protein, Vps1, is a GTPase involved in cargo sorting and membrane remodeling in multiple cellular trafficking pathways. Recently, Vps1 has been shown to genetically interact with ESCRT subunits. We tested the hypothesis that the functional connection of Vps1 with some of these subunits of ESCRT complexes occurs via a physical interaction. By utilizing the yeast two-hybrid system, we revealed that Vps1 physically interacts with the ESCRT-II subunits, Vps22 and Vps36, and the ESCRT-III subunit Vps24...
February 9, 2017: Cell Biology International
https://www.readbyqxmd.com/read/28185347/salmonella-effector-sopd2-interferes-with-rab34-function
#16
Wei Xuan Teo, Zhe Yang, Markus Charles Kerr, Lin Luo, Zhong Guo, Kirill Alexandrov, Jenny Lea Stow, Rohan David Teasdale
Many intracellular pathogens have evolved highly specialized mechanisms to isolate themselves from the host cell's innate immune response while still obtaining the necessary nutrients to survive. Salmonella utilises type 3 secretion systems (T3SSs) to deliver bacterial proteins called effectors, across the encompassing Salmonella Containing vacuole (SCV) membrane, to subvert the host's membrane trafficking pathways and alter other cellular processes. The Salmonella Pathogenicity Island (SPI)-2 effector SopD2 has recently been demonstrated to modulate multiple members of the Rab GTPase family such as Rab7, Rab8, Rab10 and Rab32 (D'Costa et al...
February 9, 2017: Cell Biology International
https://www.readbyqxmd.com/read/28185342/untargeted-metabolomics-analysis-of-adipogenic-transformation-in-op9-dl1-cells-using-liquid-chromatography-mass-spectrometry-implications-for-thymic-adipogenesis
#17
Jianxin Tan, Yajun Wang, Siliang Wang, Nannan Zhang, Simeng Wu, Zhe Yuan, Xike Zhu
Adipocyte deposition is a key feature of age-related thymic involution, but the underlying mechanisms responsible for thymic adiposity remain to be elucidated. In the present study, we utilized rosiglitazone, a potent peroxisome proliferator-activated receptor γ agonist, to induce adipogenic differentiation of OP9-DL1 cells, and detected the metabolomics alterations during adipogenic differentiation by using liquid chromatography-mass spectrometry. The obtained metabolites were further processed by multivariate statistical analysis, including principal component analysis, partial least squares discriminant analysis, and orthogonal projection on latent-structures discriminant analysis...
February 9, 2017: Cell Biology International
https://www.readbyqxmd.com/read/28150906/insulin-like-growth-factor-binding-protein-4-inhibits-cell-growth-migration-and-invasion-and-downregulates-cox-2-expression-in-a549-lung-cancer-cells
#18
Weiwen Li, Debin Sun, Zhuqing Lv, Yueqiu Wei, Liyun Zheng, Tingting Zeng, Jialu Zhao
Insulin-like growth factor binding protein 4 (IGFBP-4) and cyclooxygenase2 (COX-2) are associated with tumor inflammatory microenvironment which is involved in the progression of tumor. However, it is unclear that the roles of IGFBP-4 in lung cancer and the effects of IGFBP-4 on COX-2 expression. In this study, we showed that IGFBP-4 could decrease COX-2 production in lung cancer A549 cells. IGFBP-4 expression was significantly lower but COX-2 expression was higher in lung cancer tissues compared to matched adjacent normal tissues...
February 2, 2017: Cell Biology International
https://www.readbyqxmd.com/read/28150893/domain-of-coagulation-factor-ix-is-conducive-to-exposure-of-phosphatidylserine
#19
Chiaki Hidai, Yusuke Fujiwara, Shinichiro Kokubun, Hisataka Kitano
Lipid rafts are an initiation site for many different signals. Recently, we reported that an EGF domain in activated coagulation factor IX (EGF-F9) increases lipid raft formation and accelerates cell migration. However, the detailed mechanism is not well understood. This study aimed to evaluate the effects of EGF-F9 on the cell membrane. A431 cells (derived from human squamous cell carcinoma) were treated with recombinant EGF-F9. Cells were immunocytochemically stained with probes for lipid rafts or phosphatidylserine (PS)...
February 2, 2017: Cell Biology International
https://www.readbyqxmd.com/read/28150891/klk4-silencing-inhibits-the-growth-of-oral-squamous-cell-carcinoma-through-wnt-%C3%AE-catenin-signaling-pathway
#20
Zhi Cui, Ye Cui, Shuting Yang, Gan Luo, Yang Wang, Yixin Lou, Xinhua Sun
Oral squamous cell carcinoma (OSCC) is a malignancy that largely impacts the quality of people's daily life. Kallikrein-related peptidase 4 (KLK4) is highly expressed in OSCC, however, its roles in OSCC cells are unclear. In the present study, the effect of KLK4 silencing on the growth of OSCC cells was investigated. Our study showed that the proliferation and colony formation of OSCC cells was inhibited by KLK4 silencing and their cell cycle was arrested. Additionally, apoptosis of OSCC cells was enhanced by KLK4 silencing, with increased protein levels of cleaved PARP, cleaved caspase-3, Bax and decreased levels of Bcl-2...
February 2, 2017: Cell Biology International
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